From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. 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src/erasure-code/shec/CMakeLists.txt create mode 100644 src/erasure-code/shec/ErasureCodePluginShec.cc create mode 100644 src/erasure-code/shec/ErasureCodePluginShec.h create mode 100644 src/erasure-code/shec/ErasureCodeShec.cc create mode 100644 src/erasure-code/shec/ErasureCodeShec.h create mode 100644 src/erasure-code/shec/ErasureCodeShecTableCache.cc create mode 100644 src/erasure-code/shec/ErasureCodeShecTableCache.h create mode 100755 src/erasure-code/shec/determinant.c (limited to 'src/erasure-code') diff --git a/src/erasure-code/CMakeLists.txt b/src/erasure-code/CMakeLists.txt new file mode 100644 index 00000000..bd9b0046 --- /dev/null +++ b/src/erasure-code/CMakeLists.txt @@ -0,0 +1,40 @@ +## erasure code plugins + +set(erasure_plugin_dir ${CEPH_INSTALL_PKGLIBDIR}/erasure-code) + +#jerasure subdir must be before shec so jerasure & neon obj libs are declared +include_directories(SYSTEM jerasure/jerasure/include) +include_directories(SYSTEM jerasure/gf-complete/include) +include_directories(jerasure) + +# legacy jerasure flavors. these are left here for backward compatibility +# and should be removed in future versions +set(jerasure_legacy_flavors generic) +if(HAVE_ARM) + list(APPEND jerasure_legacy_flavors neon) +endif() +if(HAVE_INTEL) + list(APPEND jerasure_legacy_flavors sse3 sse4) +endif() + +add_subdirectory(jerasure) +add_subdirectory(lrc) +add_subdirectory(shec) +add_subdirectory(clay) + +if (HAVE_BETTER_YASM_ELF64) + add_subdirectory(isa) + set(EC_ISA_LIB ec_isa) +endif (HAVE_BETTER_YASM_ELF64) + +add_library(erasure_code STATIC ErasureCodePlugin.cc) +target_link_libraries(erasure_code ${CMAKE_DL_LIBS}) + +add_library(erasure_code_objs OBJECT ErasureCode.cc) + +add_custom_target(erasure_code_plugins DEPENDS + ${EC_ISA_LIB} + ec_lrc + ec_jerasure + ec_shec + ec_clay) diff --git a/src/erasure-code/ErasureCode.cc b/src/erasure-code/ErasureCode.cc new file mode 100644 index 00000000..3fdf5491 --- /dev/null +++ b/src/erasure-code/ErasureCode.cc @@ -0,0 +1,350 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include +#include + +#include "ErasureCode.h" + +#include "common/strtol.h" +#include "include/buffer.h" +#include "crush/CrushWrapper.h" +#include "osd/osd_types.h" + +#define DEFAULT_RULE_ROOT "default" +#define DEFAULT_RULE_FAILURE_DOMAIN "host" + +const unsigned ErasureCode::SIMD_ALIGN = 32; + +int ErasureCode::init( + ErasureCodeProfile &profile, + std::ostream *ss) +{ + int err = 0; + err |= to_string("crush-root", profile, + &rule_root, + DEFAULT_RULE_ROOT, ss); + err |= to_string("crush-failure-domain", profile, + &rule_failure_domain, + DEFAULT_RULE_FAILURE_DOMAIN, ss); + err |= to_string("crush-device-class", profile, + &rule_device_class, + "", ss); + if (err) + return err; + _profile = profile; + return 0; +} + +int ErasureCode::create_rule( + const std::string &name, + CrushWrapper &crush, + std::ostream *ss) const +{ + int ruleid = crush.add_simple_rule( + name, + rule_root, + rule_failure_domain, + rule_device_class, + "indep", + pg_pool_t::TYPE_ERASURE, + ss); + + if (ruleid < 0) + return ruleid; + + crush.set_rule_mask_max_size(ruleid, get_chunk_count()); + return ruleid; +} + +int ErasureCode::sanity_check_k_m(int k, int m, ostream *ss) +{ + if (k < 2) { + *ss << "k=" << k << " must be >= 2" << std::endl; + return -EINVAL; + } + if (m < 1) { + *ss << "m=" << m << " must be >= 1" << std::endl; + return -EINVAL; + } + return 0; +} + +int ErasureCode::chunk_index(unsigned int i) const +{ + return chunk_mapping.size() > i ? chunk_mapping[i] : i; +} + +int ErasureCode::_minimum_to_decode(const set &want_to_read, + const set &available_chunks, + set *minimum) +{ + if (includes(available_chunks.begin(), available_chunks.end(), + want_to_read.begin(), want_to_read.end())) { + *minimum = want_to_read; + } else { + unsigned int k = get_data_chunk_count(); + if (available_chunks.size() < (unsigned)k) + return -EIO; + set::iterator i; + unsigned j; + for (i = available_chunks.begin(), j = 0; j < (unsigned)k; ++i, j++) + minimum->insert(*i); + } + return 0; +} + +int ErasureCode::minimum_to_decode(const set &want_to_read, + const set &available_chunks, + map>> *minimum) +{ + set minimum_shard_ids; + int r = _minimum_to_decode(want_to_read, available_chunks, &minimum_shard_ids); + if (r != 0) { + return r; + } + vector> default_subchunks; + default_subchunks.push_back(make_pair(0, get_sub_chunk_count())); + for (auto &&id : minimum_shard_ids) { + minimum->insert(make_pair(id, default_subchunks)); + } + return 0; +} + +int ErasureCode::minimum_to_decode_with_cost(const set &want_to_read, + const map &available, + set *minimum) +{ + set available_chunks; + for (map::const_iterator i = available.begin(); + i != available.end(); + ++i) + available_chunks.insert(i->first); + return _minimum_to_decode(want_to_read, available_chunks, minimum); +} + +int ErasureCode::encode_prepare(const bufferlist &raw, + map &encoded) const +{ + unsigned int k = get_data_chunk_count(); + unsigned int m = get_chunk_count() - k; + unsigned blocksize = get_chunk_size(raw.length()); + unsigned padded_chunks = k - raw.length() / blocksize; + bufferlist prepared = raw; + + for (unsigned int i = 0; i < k - padded_chunks; i++) { + bufferlist &chunk = encoded[chunk_index(i)]; + chunk.substr_of(prepared, i * blocksize, blocksize); + chunk.rebuild_aligned_size_and_memory(blocksize, SIMD_ALIGN); + ceph_assert(chunk.is_contiguous()); + } + if (padded_chunks) { + unsigned remainder = raw.length() - (k - padded_chunks) * blocksize; + bufferptr buf(buffer::create_aligned(blocksize, SIMD_ALIGN)); + + raw.copy((k - padded_chunks) * blocksize, remainder, buf.c_str()); + buf.zero(remainder, blocksize - remainder); + encoded[chunk_index(k-padded_chunks)].push_back(std::move(buf)); + + for (unsigned int i = k - padded_chunks + 1; i < k; i++) { + bufferptr buf(buffer::create_aligned(blocksize, SIMD_ALIGN)); + buf.zero(); + encoded[chunk_index(i)].push_back(std::move(buf)); + } + } + for (unsigned int i = k; i < k + m; i++) { + bufferlist &chunk = encoded[chunk_index(i)]; + chunk.push_back(buffer::create_aligned(blocksize, SIMD_ALIGN)); + } + + return 0; +} + +int ErasureCode::encode(const set &want_to_encode, + const bufferlist &in, + map *encoded) +{ + unsigned int k = get_data_chunk_count(); + unsigned int m = get_chunk_count() - k; + bufferlist out; + int err = encode_prepare(in, *encoded); + if (err) + return err; + encode_chunks(want_to_encode, encoded); + for (unsigned int i = 0; i < k + m; i++) { + if (want_to_encode.count(i) == 0) + encoded->erase(i); + } + return 0; +} + +int ErasureCode::encode_chunks(const set &want_to_encode, + map *encoded) +{ + ceph_abort_msg("ErasureCode::encode_chunks not implemented"); +} + +int ErasureCode::_decode(const set &want_to_read, + const map &chunks, + map *decoded) +{ + vector have; + have.reserve(chunks.size()); + for (map::const_iterator i = chunks.begin(); + i != chunks.end(); + ++i) { + have.push_back(i->first); + } + if (includes( + have.begin(), have.end(), want_to_read.begin(), want_to_read.end())) { + for (set::iterator i = want_to_read.begin(); + i != want_to_read.end(); + ++i) { + (*decoded)[*i] = chunks.find(*i)->second; + } + return 0; + } + unsigned int k = get_data_chunk_count(); + unsigned int m = get_chunk_count() - k; + unsigned blocksize = (*chunks.begin()).second.length(); + for (unsigned int i = 0; i < k + m; i++) { + if (chunks.find(i) == chunks.end()) { + bufferlist tmp; + bufferptr ptr(buffer::create_aligned(blocksize, SIMD_ALIGN)); + tmp.push_back(ptr); + tmp.claim_append((*decoded)[i]); + (*decoded)[i].swap(tmp); + } else { + (*decoded)[i] = chunks.find(i)->second; + (*decoded)[i].rebuild_aligned(SIMD_ALIGN); + } + } + return decode_chunks(want_to_read, chunks, decoded); +} + +int ErasureCode::decode(const set &want_to_read, + const map &chunks, + map *decoded, int chunk_size) +{ + return _decode(want_to_read, chunks, decoded); +} + +int ErasureCode::decode_chunks(const set &want_to_read, + const map &chunks, + map *decoded) +{ + ceph_abort_msg("ErasureCode::decode_chunks not implemented"); +} + +int ErasureCode::parse(const ErasureCodeProfile &profile, + ostream *ss) +{ + return to_mapping(profile, ss); +} + +const vector &ErasureCode::get_chunk_mapping() const { + return chunk_mapping; +} + +int ErasureCode::to_mapping(const ErasureCodeProfile &profile, + ostream *ss) +{ + if (profile.find("mapping") != profile.end()) { + std::string mapping = profile.find("mapping")->second; + int position = 0; + vector coding_chunk_mapping; + for(std::string::iterator it = mapping.begin(); it != mapping.end(); ++it) { + if (*it == 'D') + chunk_mapping.push_back(position); + else + coding_chunk_mapping.push_back(position); + position++; + } + chunk_mapping.insert(chunk_mapping.end(), + coding_chunk_mapping.begin(), + coding_chunk_mapping.end()); + } + return 0; +} + +int ErasureCode::to_int(const std::string &name, + ErasureCodeProfile &profile, + int *value, + const std::string &default_value, + ostream *ss) +{ + if (profile.find(name) == profile.end() || + profile.find(name)->second.size() == 0) + profile[name] = default_value; + std::string p = profile.find(name)->second; + std::string err; + int r = strict_strtol(p.c_str(), 10, &err); + if (!err.empty()) { + *ss << "could not convert " << name << "=" << p + << " to int because " << err + << ", set to default " << default_value << std::endl; + *value = strict_strtol(default_value.c_str(), 10, &err); + return -EINVAL; + } + *value = r; + return 0; +} + +int ErasureCode::to_bool(const std::string &name, + ErasureCodeProfile &profile, + bool *value, + const std::string &default_value, + ostream *ss) +{ + if (profile.find(name) == profile.end() || + profile.find(name)->second.size() == 0) + profile[name] = default_value; + const std::string p = profile.find(name)->second; + *value = (p == "yes") || (p == "true"); + return 0; +} + +int ErasureCode::to_string(const std::string &name, + ErasureCodeProfile &profile, + std::string *value, + const std::string &default_value, + ostream *ss) +{ + if (profile.find(name) == profile.end() || + profile.find(name)->second.size() == 0) + profile[name] = default_value; + *value = profile[name]; + return 0; +} + +int ErasureCode::decode_concat(const map &chunks, + bufferlist *decoded) +{ + set want_to_read; + + for (unsigned int i = 0; i < get_data_chunk_count(); i++) { + want_to_read.insert(chunk_index(i)); + } + map decoded_map; + int r = _decode(want_to_read, chunks, &decoded_map); + if (r == 0) { + for (unsigned int i = 0; i < get_data_chunk_count(); i++) { + decoded->claim_append(decoded_map[chunk_index(i)]); + } + } + return r; +} diff --git a/src/erasure-code/ErasureCode.h b/src/erasure-code/ErasureCode.h new file mode 100644 index 00000000..85ebf66f --- /dev/null +++ b/src/erasure-code/ErasureCode.h @@ -0,0 +1,132 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2014 Cloudwatt + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_H +#define CEPH_ERASURE_CODE_H + +/*! @file ErasureCode.h + @brief Base class for erasure code plugins implementors + + */ + +#include "ErasureCodeInterface.h" + +namespace ceph { + + class ErasureCode : public ErasureCodeInterface { + public: + static const unsigned SIMD_ALIGN; + + std::vector chunk_mapping; + ErasureCodeProfile _profile; + + // for CRUSH rule + std::string rule_root; + std::string rule_failure_domain; + std::string rule_device_class; + + ~ErasureCode() override {} + + int init(ErasureCodeProfile &profile, std::ostream *ss) override; + + const ErasureCodeProfile &get_profile() const override { + return _profile; + } + + int create_rule(const std::string &name, + CrushWrapper &crush, + std::ostream *ss) const override; + + int sanity_check_k_m(int k, int m, std::ostream *ss); + + unsigned int get_coding_chunk_count() const override { + return get_chunk_count() - get_data_chunk_count(); + } + + virtual int get_sub_chunk_count() override { + return 1; + } + + virtual int _minimum_to_decode(const std::set &want_to_read, + const std::set &available_chunks, + std::set *minimum); + + int minimum_to_decode(const std::set &want_to_read, + const std::set &available, + std::map>> *minimum) override; + + int minimum_to_decode_with_cost(const std::set &want_to_read, + const std::map &available, + std::set *minimum) override; + + int encode_prepare(const bufferlist &raw, + std::map &encoded) const; + + int encode(const std::set &want_to_encode, + const bufferlist &in, + std::map *encoded) override; + + int encode_chunks(const std::set &want_to_encode, + std::map *encoded) override; + + int decode(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded, int chunk_size) override; + + virtual int _decode(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded); + + int decode_chunks(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded) override; + + const std::vector &get_chunk_mapping() const override; + + int to_mapping(const ErasureCodeProfile &profile, + std::ostream *ss); + + static int to_int(const std::string &name, + ErasureCodeProfile &profile, + int *value, + const std::string &default_value, + std::ostream *ss); + + static int to_bool(const std::string &name, + ErasureCodeProfile &profile, + bool *value, + const std::string &default_value, + std::ostream *ss); + + static int to_string(const std::string &name, + ErasureCodeProfile &profile, + std::string *value, + const std::string &default_value, + std::ostream *ss); + + int decode_concat(const std::map &chunks, + bufferlist *decoded) override; + + protected: + int parse(const ErasureCodeProfile &profile, + std::ostream *ss); + + private: + int chunk_index(unsigned int i) const; + }; +} + +#endif diff --git a/src/erasure-code/ErasureCodeInterface.h b/src/erasure-code/ErasureCodeInterface.h new file mode 100644 index 00000000..b0c24e1e --- /dev/null +++ b/src/erasure-code/ErasureCodeInterface.h @@ -0,0 +1,468 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013 Cloudwatt + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_INTERFACE_H +#define CEPH_ERASURE_CODE_INTERFACE_H + +/*! @file ErasureCodeInterface.h + @brief Interface provided by erasure code plugins + + The erasure coded pools rely on plugins implementing + **ErasureCodeInterface** to encode and decode content. All codes + are systematic (i.e. the data is not mangled and can be + reconstructed by concatenating chunks ). + + Methods returning an **int** return **0** on success and a + negative value on error. If the value returned on error is not + explained in **ErasureCodeInterface**, the sources or the + documentation of the interface implementer (i.e. the plugin ) must + be read to figure out what it means. It is recommended that each + error code matches an *errno* value that relates to the cause of + the error. + + If an object is small enough, the caller can process it with + one call to the **encode** or **decode** method. + + +---------------- coded object O -------------------------+ + |+----------------+ +----------------+ +----------------+ | + || chunk 0 | | chunk 1 | | chunk 2 | | + || [0,N) | | [N,2N) | | [2N,3N) | | + |+----------------+ +----------------+ +----------------+ | + +------^--------------------------------------------------+ + | + chunk B / C | offset B % C ( where C is the chunk size ) + | + +-----^---- raw object O ----+------+ + | B [0,X) | pad | + +----------------------------+------+ + + The object size is paded so that each chunks are of the same size. + In the example above, if the actual object size was X, then it + will be padded to 2N >= X assuming there are two data chunks (0 + and 1) and one coding chunk (2). + + For chunks of size C, byte B of the object is found in chunk number + B / C at offset B % C. + + If an object is too large to be encoded in memory, the caller + should divide it in smaller units named **stripes**. + + +---------------------- object O -------------------------+ + |+----------------+ +----------------+ +----------------+ | + stripe || chunk 0 | | chunk 1 | | chunk 2 | | + 0 || [0,N) | | [N,2N) | | [2N,3N) | | + |+----------------+ +----------------+ +----------------+ | + |+----------------+ +----------------+ +----------------+ | + stripe || chunk 0 | | chunk 1 | | chunk 2 | | + 1 || [X,M) | | [X+M,X+2M) | | [X+2M,X+3M) | | + || | | | | | | + |+----------------+ +----------------+ +----------------+ | + | ... | + +---------------------------------------------------------+ + + The interface does not concern itself with stripes nor does it + impose constraints on the size of each stripe. Variable names in + the interface always use **object** and never use **stripe**. + + Assuming the interface implementer provides three data chunks ( K + = 3 ) and two coding chunks ( M = 2 ), a buffer could be encoded as + follows: + + ~~~~~~~~~~~~~~~~{.c} + set want_to_encode(0, 1, 2, // data chunks + 3, 4 // coding chunks + ); + bufferlist in = "ABCDEF"; + map encoded + encode(want_to_encode, in, &encoded); + encoded[0] == "AB" // data chunk 0 + encoded[1] == "CD" // data chunk 1 + encoded[2] == "EF" // data chunk 2 + encoded[3] // coding chunk 0 + encoded[4] // coding chunk 1 + ~~~~~~~~~~~~~~~~ + + The **minimum_to_decode_with_cost** method can be used to minimize + the cost of fetching the chunks necessary to retrieve a given + content. For instance, if encoded[2] (contained **EF**) is missing + and accessing encoded[3] (the first coding chunk) is more + expensive than accessing encoded[4] (the second coding chunk), + **minimum_to_decode_with_cost** is expected to chose the first + coding chunk. + + ~~~~~~~~~~~~~~~~{.c} + set want_to_read(2); // want the chunk containing "EF" + map available( + 0 => 1, // data chunk 0 : available and costs 1 + 1 => 1, // data chunk 1 : available and costs 1 + // data chunk 2 : missing + 3 => 9, // coding chunk 1 : available and costs 9 + 4 => 1, // coding chunk 2 : available and costs 1 + ); + set minimum; + minimum_to_decode_with_cost(want_to_read, + available, + &minimum); + minimum == set(0, 1, 4); // NOT set(0, 1, 3); + ~~~~~~~~~~~~~~~~ + + It sets **minimum** with three chunks to reconstruct the desired + data chunk and will pick the second coding chunk ( 4 ) because it + is less expensive ( 1 < 9 ) to retrieve than the first coding + chunk ( 3 ). The caller is responsible for retrieving the chunks + and call **decode** to reconstruct the second data chunk. + + ~~~~~~~~~~~~~~~~{.c} + map chunks; + for i in minimum.keys(): + chunks[i] = fetch_chunk(i); // get chunk from storage + map decoded; + decode(want_to_read, chunks, &decoded); + decoded[2] == "EF" + ~~~~~~~~~~~~~~~~ + + The semantic of the cost value is defined by the caller and must + be known to the implementer. For instance, it may be more + expensive to retrieve two chunks with cost 1 + 9 = 10 than two + chunks with cost 6 + 6 = 12. + */ + +#include +#include +#include +#include +#include +#include +#include "include/buffer_fwd.h" + +class CrushWrapper; + +namespace ceph { + + typedef std::map ErasureCodeProfile; + + inline std::ostream& operator<<(std::ostream& out, const ErasureCodeProfile& profile) { + out << "{"; + for (ErasureCodeProfile::const_iterator it = profile.begin(); + it != profile.end(); + ++it) { + if (it != profile.begin()) out << ","; + out << it->first << "=" << it->second; + } + out << "}"; + return out; + } + + + class ErasureCodeInterface { + public: + virtual ~ErasureCodeInterface() {} + + /** + * Initialize the instance according to the content of + * **profile**. The **ss** stream is set with debug messages or + * error messages, the content of which depend on the + * implementation. + * + * Return 0 on success or a negative errno on error. When + * returning on error, the implementation is expected to + * provide a human readable explanation in **ss**. + * + * @param [in] profile a key/value map + * @param [out] ss contains informative messages when an error occurs + * @return 0 on success or a negative errno on error. + */ + virtual int init(ErasureCodeProfile &profile, std::ostream *ss) = 0; + + /** + * Return the profile that was used to initialize the instance + * with the **init** method. + * + * @return the profile in use by the instance + */ + virtual const ErasureCodeProfile &get_profile() const = 0; + + /** + * Create a new rule in **crush** under the name **name**, + * unless it already exists. + * + * Return the rule number that was created on success. If a + * rule **name** already exists, return -EEXISTS, otherwise + * return a negative value indicating an error with a semantic + * defined by the implementation. + * + * @param [in] name of the rule to create + * @param [in] crush crushmap in which the rule is created + * @param [out] ss contains informative messages when an error occurs + * @return a rule on success or a negative errno on error. + */ + virtual int create_rule(const std::string &name, + CrushWrapper &crush, + std::ostream *ss) const = 0; + + /** + * Return the number of chunks created by a call to the **encode** + * method. + * + * In the simplest case it can be K + M, i.e. the number + * of data chunks (K) plus the number of parity chunks + * (M). However, if the implementation provides local parity there + * could be an additional overhead. + * + * @return the number of chunks created by encode() + */ + virtual unsigned int get_chunk_count() const = 0; + + /** + * Return the number of data chunks created by a call to the + * **encode** method. The data chunks contain the buffer provided + * to **encode**, verbatim, with padding at the end of the last + * chunk. + * + * @return the number of data chunks created by encode() + */ + virtual unsigned int get_data_chunk_count() const = 0; + + /** + * Return the number of coding chunks created by a call to the + * **encode** method. The coding chunks are used to recover from + * the loss of one or more chunks. If there is one coding chunk, + * it is possible to recover from the loss of exactly one + * chunk. If there are two coding chunks, it is possible to + * recover from the loss of at most two chunks, etc. + * + * @return the number of coding chunks created by encode() + */ + virtual unsigned int get_coding_chunk_count() const = 0; + + /** + * Return the number of sub chunks chunks created by a call to the + * **encode** method. Each chunk can be viewed as union of sub-chunks + * For the case of array codes, the sub-chunk count > 1, where as the + * scalar codes have sub-chunk count = 1. + * + * @return the number of sub-chunks per chunk created by encode() + */ + virtual int get_sub_chunk_count() = 0; + + /** + * Return the size (in bytes) of a single chunk created by a call + * to the **decode** method. The returned size multiplied by + * **get_chunk_count()** is greater or equal to **object_size**. + * + * If the object size is properly aligned, the chunk size is + * **object_size / get_chunk_count()**. However, if + * **object_size** is not a multiple of **get_chunk_count** or if + * the implementation imposes additional alignment constraints, + * the chunk size may be larger. + * + * The byte found at offset **B** of the original object is mapped + * to chunk **B / get_chunk_size()** at offset **B % get_chunk_size()**. + * + * @param [in] object_size the number of bytes of the object to **encode()** + * @return the size (in bytes) of a single chunk created by **encode()** + */ + virtual unsigned int get_chunk_size(unsigned int object_size) const = 0; + + /** + * Compute the smallest subset of **available** chunks that needs + * to be retrieved in order to successfully decode + * **want_to_read** chunks. + * + * It is strictly equivalent to calling + * **minimum_to_decode_with_cost** where each **available** chunk + * has the same cost. + * + * @see minimum_to_decode_with_cost + * + * @param [in] want_to_read chunk indexes to be decoded + * @param [in] available chunk indexes containing valid data + * @param [out] minimum chunk indexes and corresponding + * subchunk index offsets, count. + * @return **0** on success or a negative errno on error. + */ + virtual int minimum_to_decode(const std::set &want_to_read, + const std::set &available, + std::map>> + *minimum) = 0; + + /** + * Compute the smallest subset of **available** chunks that needs + * to be retrieved in order to successfully decode + * **want_to_read** chunks. If there are more than one possible + * subset, select the subset that minimizes the overall retrieval + * cost. + * + * The **available** parameter maps chunk indexes to their + * retrieval cost. The higher the cost value, the more costly it + * is to retrieve the chunk content. + * + * Returns -EIO if there are not enough chunk indexes in + * **available** to decode **want_to_read**. + * + * Returns 0 on success. + * + * The **minimum** argument must be a pointer to an empty set. + * + * @param [in] want_to_read chunk indexes to be decoded + * @param [in] available map chunk indexes containing valid data + * to their retrieval cost + * @param [out] minimum chunk indexes to retrieve + * @return **0** on success or a negative errno on error. + */ + virtual int minimum_to_decode_with_cost(const std::set &want_to_read, + const std::map &available, + std::set *minimum) = 0; + + /** + * Encode the content of **in** and store the result in + * **encoded**. All buffers pointed to by **encoded** have the + * same size. The **encoded** map contains at least all chunk + * indexes found in the **want_to_encode** set. + * + * The **encoded** map is expected to be a pointer to an empty + * map. + * + * Assuming the **in** parameter is **length** bytes long, + * the concatenation of the first **length** bytes of the + * **encoded** buffers is equal to the content of the **in** + * parameter. + * + * The **encoded** map may contain more chunks than required by + * **want_to_encode** and the caller is expected to permanently + * store all of them, not just the chunks listed in + * **want_to_encode**. + * + * The **encoded** map may contain pointers to data stored in + * the **in** parameter. If the caller modifies the content of + * **in** after calling the encode method, it may have a side + * effect on the content of **encoded**. + * + * The **encoded** map may contain pointers to buffers allocated + * by the encode method. They will be freed when **encoded** is + * freed. The allocation method is not specified. + * + * Returns 0 on success. + * + * @param [in] want_to_encode chunk indexes to be encoded + * @param [in] in data to be encoded + * @param [out] encoded map chunk indexes to chunk data + * @return **0** on success or a negative errno on error. + */ + virtual int encode(const std::set &want_to_encode, + const bufferlist &in, + std::map *encoded) = 0; + + + virtual int encode_chunks(const std::set &want_to_encode, + std::map *encoded) = 0; + + /** + * Decode the **chunks** and store at least **want_to_read** + * chunks in **decoded**. + * + * The **decoded** map must be a pointer to an empty map. + * + * There must be enough **chunks** ( as returned by + * **minimum_to_decode** or **minimum_to_decode_with_cost** ) to + * perform a successful decoding of all chunks listed in + * **want_to_read**. + * + * All buffers pointed by **in** must have the same size. + * + * On success, the **decoded** map may contain more chunks than + * required by **want_to_read** and they can safely be used by the + * caller. + * + * If a chunk is listed in **want_to_read** and there is a + * corresponding **bufferlist** in **chunks**, it will be + * referenced in **decoded**. If not it will be reconstructed from + * the existing chunks. + * + * Because **decoded** may contain pointers to data found in + * **chunks**, modifying the content of **chunks** after calling + * decode may have a side effect on the content of **decoded**. + * + * Returns 0 on success. + * + * @param [in] want_to_read chunk indexes to be decoded + * @param [in] chunks map chunk indexes to chunk data + * @param [out] decoded map chunk indexes to chunk data + * @param [in] chunk_size chunk size + * @return **0** on success or a negative errno on error. + */ + virtual int decode(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded, int chunk_size) = 0; + + virtual int decode_chunks(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded) = 0; + + /** + * Return the ordered list of chunks or an empty vector + * if no remapping is necessary. + * + * By default encoding an object with K=2,M=1 will create three + * chunks, the first two are data and the last one coding. For + * a 10MB object, it would be: + * + * chunk 0 for the first 5MB + * chunk 1 for the last 5MB + * chunk 2 for the 5MB coding chunk + * + * The plugin may, however, decide to remap them in a different + * order, such as: + * + * chunk 0 for the last 5MB + * chunk 1 for the 5MB coding chunk + * chunk 2 for the first 5MB + * + * The vector remaps the chunks so that the first chunks are + * data, in sequential order, and the last chunks contain parity + * in the same order as they were output by the encoding function. + * + * In the example above the mapping would be: + * + * [ 1, 2, 0 ] + * + * The returned vector only contains information for chunks + * that need remapping. If no remapping is necessary, the + * vector is empty. + * + * @return vector list of indices of chunks to be remapped + */ + virtual const std::vector &get_chunk_mapping() const = 0; + + /** + * Decode the first **get_data_chunk_count()** **chunks** and + * concatenate them into **decoded**. + * + * Returns 0 on success. + * + * @param [in] chunks map chunk indexes to chunk data + * @param [out] decoded concatenante of the data chunks + * @return **0** on success or a negative errno on error. + */ + virtual int decode_concat(const std::map &chunks, + bufferlist *decoded) = 0; + }; + + typedef std::shared_ptr ErasureCodeInterfaceRef; + +} + +#endif diff --git a/src/erasure-code/ErasureCodePlugin.cc b/src/erasure-code/ErasureCodePlugin.cc new file mode 100644 index 00000000..bc595629 --- /dev/null +++ b/src/erasure-code/ErasureCodePlugin.cc @@ -0,0 +1,202 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013,2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include +#include + +#include "ceph_ver.h" +#include "ErasureCodePlugin.h" +#include "common/errno.h" +#include "include/str_list.h" + +using namespace std; + +#define PLUGIN_PREFIX "libec_" +#if defined(__APPLE__) +#define PLUGIN_SUFFIX ".dylib" +#else +#define PLUGIN_SUFFIX ".so" +#endif +#define PLUGIN_INIT_FUNCTION "__erasure_code_init" +#define PLUGIN_VERSION_FUNCTION "__erasure_code_version" + +ErasureCodePluginRegistry ErasureCodePluginRegistry::singleton; + +ErasureCodePluginRegistry::ErasureCodePluginRegistry() : + lock("ErasureCodePluginRegistry::lock"), + loading(false), + disable_dlclose(false) +{ +} + +ErasureCodePluginRegistry::~ErasureCodePluginRegistry() +{ + if (disable_dlclose) + return; + + for (std::map::iterator i = plugins.begin(); + i != plugins.end(); + ++i) { + void *library = i->second->library; + delete i->second; + dlclose(library); + } +} + +int ErasureCodePluginRegistry::remove(const std::string &name) +{ + ceph_assert(lock.is_locked()); + if (plugins.find(name) == plugins.end()) + return -ENOENT; + std::map::iterator plugin = plugins.find(name); + void *library = plugin->second->library; + delete plugin->second; + dlclose(library); + plugins.erase(plugin); + return 0; +} + +int ErasureCodePluginRegistry::add(const std::string &name, + ErasureCodePlugin* plugin) +{ + ceph_assert(lock.is_locked()); + if (plugins.find(name) != plugins.end()) + return -EEXIST; + plugins[name] = plugin; + return 0; +} + +ErasureCodePlugin *ErasureCodePluginRegistry::get(const std::string &name) +{ + ceph_assert(lock.is_locked()); + if (plugins.find(name) != plugins.end()) + return plugins[name]; + else + return 0; +} + +int ErasureCodePluginRegistry::factory(const std::string &plugin_name, + const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + ostream *ss) +{ + ErasureCodePlugin *plugin; + { + Mutex::Locker l(lock); + plugin = get(plugin_name); + if (plugin == 0) { + loading = true; + int r = load(plugin_name, directory, &plugin, ss); + loading = false; + if (r != 0) + return r; + } + } + + int r = plugin->factory(directory, profile, erasure_code, ss); + if (r) + return r; + if (profile != (*erasure_code)->get_profile()) { + *ss << __func__ << " profile " << profile << " != get_profile() " + << (*erasure_code)->get_profile() << std::endl; + return -EINVAL; + } + return 0; +} + +static const char *an_older_version() { + return "an older version"; +} + +int ErasureCodePluginRegistry::load(const std::string &plugin_name, + const std::string &directory, + ErasureCodePlugin **plugin, + ostream *ss) +{ + ceph_assert(lock.is_locked()); + std::string fname = directory + "/" PLUGIN_PREFIX + + plugin_name + PLUGIN_SUFFIX; + void *library = dlopen(fname.c_str(), RTLD_NOW); + if (!library) { + *ss << "load dlopen(" << fname << "): " << dlerror(); + return -EIO; + } + + const char * (*erasure_code_version)() = + (const char *(*)())dlsym(library, PLUGIN_VERSION_FUNCTION); + if (erasure_code_version == NULL) + erasure_code_version = an_older_version; + if (erasure_code_version() != string(CEPH_GIT_NICE_VER)) { + *ss << "expected plugin " << fname << " version " << CEPH_GIT_NICE_VER + << " but it claims to be " << erasure_code_version() << " instead"; + dlclose(library); + return -EXDEV; + } + + int (*erasure_code_init)(const char *, const char *) = + (int (*)(const char *, const char *))dlsym(library, PLUGIN_INIT_FUNCTION); + if (erasure_code_init) { + std::string name = plugin_name; + int r = erasure_code_init(name.c_str(), directory.c_str()); + if (r != 0) { + *ss << "erasure_code_init(" << plugin_name + << "," << directory + << "): " << cpp_strerror(r); + dlclose(library); + return r; + } + } else { + *ss << "load dlsym(" << fname + << ", " << PLUGIN_INIT_FUNCTION + << "): " << dlerror(); + dlclose(library); + return -ENOENT; + } + + *plugin = get(plugin_name); + if (*plugin == 0) { + *ss << "load " << PLUGIN_INIT_FUNCTION << "()" + << "did not register " << plugin_name; + dlclose(library); + return -EBADF; + } + + (*plugin)->library = library; + + *ss << __func__ << ": " << plugin_name << " "; + + return 0; +} + +int ErasureCodePluginRegistry::preload(const std::string &plugins, + const std::string &directory, + ostream *ss) +{ + Mutex::Locker l(lock); + list plugins_list; + get_str_list(plugins, plugins_list); + for (list::iterator i = plugins_list.begin(); + i != plugins_list.end(); + ++i) { + ErasureCodePlugin *plugin; + int r = load(*i, directory, &plugin, ss); + if (r) + return r; + } + return 0; +} diff --git a/src/erasure-code/ErasureCodePlugin.h b/src/erasure-code/ErasureCodePlugin.h new file mode 100644 index 00000000..a92d0e2c --- /dev/null +++ b/src/erasure-code/ErasureCodePlugin.h @@ -0,0 +1,82 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013,2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_PLUGIN_H +#define CEPH_ERASURE_CODE_PLUGIN_H + +#include "common/Mutex.h" +#include "ErasureCodeInterface.h" + +extern "C" { + const char *__erasure_code_version(); + int __erasure_code_init(char *plugin_name, char *directory); +} + +namespace ceph { + + class ErasureCodePlugin { + public: + void *library; + + ErasureCodePlugin() : + library(0) {} + virtual ~ErasureCodePlugin() {} + + virtual int factory(const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) = 0; + }; + + class ErasureCodePluginRegistry { + public: + Mutex lock; + bool loading; + bool disable_dlclose; + std::map plugins; + + static ErasureCodePluginRegistry singleton; + + ErasureCodePluginRegistry(); + ~ErasureCodePluginRegistry(); + + static ErasureCodePluginRegistry &instance() { + return singleton; + } + + int factory(const std::string &plugin, + const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss); + + int add(const std::string &name, ErasureCodePlugin *plugin); + int remove(const std::string &name); + ErasureCodePlugin *get(const std::string &name); + + int load(const std::string &plugin_name, + const std::string &directory, + ErasureCodePlugin **plugin, + std::ostream *ss); + + int preload(const std::string &plugins, + const std::string &directory, + std::ostream *ss); + }; +} + +#endif diff --git a/src/erasure-code/clay/CMakeLists.txt b/src/erasure-code/clay/CMakeLists.txt new file mode 100644 index 00000000..c5af1e22 --- /dev/null +++ b/src/erasure-code/clay/CMakeLists.txt @@ -0,0 +1,14 @@ +# clay plugin + +set(clay_srcs + ErasureCodePluginClay.cc + ErasureCodeClay.cc + $ + $ + ${CMAKE_SOURCE_DIR}/src/common/str_map.cc +) + +add_library(ec_clay SHARED ${clay_srcs}) +set_target_properties(ec_clay PROPERTIES + INSTALL_RPATH "") +install(TARGETS ec_clay DESTINATION ${erasure_plugin_dir}) diff --git a/src/erasure-code/clay/ErasureCodeClay.cc b/src/erasure-code/clay/ErasureCodeClay.cc new file mode 100644 index 00000000..7ff28c1d --- /dev/null +++ b/src/erasure-code/clay/ErasureCodeClay.cc @@ -0,0 +1,894 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2018 Indian Institute of Science + * + * Author: Myna Vajha + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include +#include + +#include "ErasureCodeClay.h" + +#include "common/debug.h" +#include "erasure-code/ErasureCodePlugin.h" +#include "include/ceph_assert.h" +#include "include/str_map.h" +#include "include/stringify.h" +#include "osd/osd_types.h" + + +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _prefix(_dout) + +#define LARGEST_VECTOR_WORDSIZE 16 +#define talloc(type, num) (type *) malloc(sizeof(type)*(num)) + +using namespace std; + +static ostream& _prefix(std::ostream* _dout) +{ + return *_dout << "ErasureCodeClay: "; +} + +static int pow_int(int a, int x) { + int power = 1; + while (x) { + if (x & 1) power *= a; + x /= 2; + a *= a; + } + return power; +} + +ErasureCodeClay::~ErasureCodeClay() +{ + for (int i = 0; i < q*t; i++) { + if (U_buf[i].length() != 0) U_buf[i].clear(); + } +} + +int ErasureCodeClay::init(ErasureCodeProfile &profile, + ostream *ss) +{ + int r; + r = parse(profile, ss); + if (r) + return r; + + r = ErasureCode::init(profile, ss); + if (r) + return r; + ErasureCodePluginRegistry ®istry = ErasureCodePluginRegistry::instance(); + r = registry.factory(mds.profile["plugin"], + directory, + mds.profile, + &mds.erasure_code, + ss); + if (r) + return r; + r = registry.factory(pft.profile["plugin"], + directory, + pft.profile, + &pft.erasure_code, + ss); + return r; + +} + +unsigned int ErasureCodeClay::get_chunk_size(unsigned int object_size) const +{ + unsigned int alignment_scalar_code = pft.erasure_code->get_chunk_size(1); + unsigned int alignment = sub_chunk_no * k * alignment_scalar_code; + + return round_up_to(object_size, alignment) / k; +} + +int ErasureCodeClay::minimum_to_decode(const set &want_to_read, + const set &available, + map>> *minimum) +{ + if (is_repair(want_to_read, available)) { + return minimum_to_repair(want_to_read, available, minimum); + } else { + return ErasureCode::minimum_to_decode(want_to_read, available, minimum); + } +} + +int ErasureCodeClay::decode(const set &want_to_read, + const map &chunks, + map *decoded, int chunk_size) +{ + set avail; + for ([[maybe_unused]] auto& [node, bl] : chunks) { + avail.insert(node); + (void)bl; // silence -Wunused-variable + } + + if (is_repair(want_to_read, avail) && + ((unsigned int)chunk_size > chunks.begin()->second.length())) { + return repair(want_to_read, chunks, decoded, chunk_size); + } else { + return ErasureCode::_decode(want_to_read, chunks, decoded); + } +} + +void p(const set &s) { cerr << s; } // for gdb + +int ErasureCodeClay::encode_chunks(const set &want_to_encode, + map *encoded) +{ + map chunks; + set parity_chunks; + int chunk_size = (*encoded)[0].length(); + + for (int i = 0; i < k + m; i++) { + if (i < k) { + chunks[i] = (*encoded)[i]; + } else { + chunks[i+nu] = (*encoded)[i]; + parity_chunks.insert(i+nu); + } + } + + for (int i = k; i < k + nu; i++) { + bufferptr buf(buffer::create_aligned(chunk_size, SIMD_ALIGN)); + buf.zero(); + chunks[i].push_back(std::move(buf)); + } + + int res = decode_layered(parity_chunks, &chunks); + for (int i = k ; i < k + nu; i++) { + // need to clean some of the intermediate chunks here!! + chunks[i].clear(); + } + return res; +} + +int ErasureCodeClay::decode_chunks(const set &want_to_read, + const map &chunks, + map *decoded) +{ + set erasures; + map coded_chunks; + + for (int i = 0; i < k + m; i++) { + if (chunks.count(i) == 0) { + erasures.insert(i < k ? i : i+nu); + } + ceph_assert(decoded->count(i) > 0); + coded_chunks[i < k ? i : i+nu] = (*decoded)[i]; + } + int chunk_size = coded_chunks[0].length(); + + for (int i = k; i < k+nu; i++) { + bufferptr buf(buffer::create_aligned(chunk_size, SIMD_ALIGN)); + buf.zero(); + coded_chunks[i].push_back(std::move(buf)); + } + + int res = decode_layered(erasures, &coded_chunks); + for (int i = k; i < k+nu; i++) { + coded_chunks[i].clear(); + } + return res; +} + +int ErasureCodeClay::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = 0; + err = ErasureCode::parse(profile, ss); + err |= to_int("k", profile, &k, DEFAULT_K, ss); + err |= to_int("m", profile, &m, DEFAULT_M, ss); + + err |= sanity_check_k_m(k, m, ss); + + err |= to_int("d", profile, &d, std::to_string(k+m-1), ss); + + // check for scalar_mds in profile input + if (profile.find("scalar_mds") == profile.end() || + profile.find("scalar_mds")->second.empty()) { + mds.profile["plugin"] = "jerasure"; + pft.profile["plugin"] = "jerasure"; + } else { + std::string p = profile.find("scalar_mds")->second; + if ((p == "jerasure") || (p == "isa") || (p == "shec")) { + mds.profile["plugin"] = p; + pft.profile["plugin"] = p; + } else { + *ss << "scalar_mds " << mds.profile["plugin"] << + "is not currently supported, use one of 'jerasure',"<< + " 'isa', 'shec'" << std::endl; + err = -EINVAL; + return err; + } + } + + if (profile.find("technique") == profile.end() || + profile.find("technique")->second.empty()) { + if ((mds.profile["plugin"]=="jerasure") || (mds.profile["plugin"]=="isa") ) { + mds.profile["technique"] = "reed_sol_van"; + pft.profile["technique"] = "reed_sol_van"; + } else { + mds.profile["technique"] = "single"; + pft.profile["technique"] = "single"; + } + } else { + std::string p = profile.find("technique")->second; + if (mds.profile["plugin"] == "jerasure") { + if ( (p == "reed_sol_van") || (p == "reed_sol_r6_op") || (p == "cauchy_orig") + || (p == "cauchy_good") || (p == "liber8tion")) { + mds.profile["technique"] = p; + pft.profile["technique"] = p; + } else { + *ss << "technique " << p << "is not currently supported, use one of " + << "reed_sol_van', 'reed_sol_r6_op','cauchy_orig'," + << "'cauchy_good','liber8tion'"<< std::endl; + err = -EINVAL; + return err; + } + } else if (mds.profile["plugin"] == "isa") { + if ( (p == "reed_sol_van") || (p == "cauchy")) { + mds.profile["technique"] = p; + pft.profile["technique"] = p; + } else { + *ss << "technique " << p << "is not currently supported, use one of" + << "'reed_sol_van','cauchy'"<< std::endl; + err = -EINVAL; + return err; + } + } else { + if ( (p == "single") || (p == "multiple")) { + mds.profile["technique"] = p; + pft.profile["technique"] = p; + } else { + *ss << "technique " << p << "is not currently supported, use one of"<< + "'single','multiple'"<< std::endl; + err = -EINVAL; + return err; + } + } + } + if ((d < k) || (d > k + m - 1)) { + *ss << "value of d " << d + << " must be within [ " << k << "," << k+m-1 << "]" << std::endl; + err = -EINVAL; + return err; + } + + q = d - k + 1; + if ((k + m) % q) { + nu = q - (k + m) % q; + } else { + nu = 0; + } + + if (k+m+nu > 254) { + err = -EINVAL; + return err; + } + + if (mds.profile["plugin"] == "shec") { + mds.profile["c"] = '2'; + pft.profile["c"] = '2'; + } + mds.profile["k"] = std::to_string(k+nu); + mds.profile["m"] = std::to_string(m); + mds.profile["w"] = '8'; + + pft.profile["k"] = '2'; + pft.profile["m"] = '2'; + pft.profile["w"] = '8'; + + t = (k + m + nu) / q; + sub_chunk_no = pow_int(q, t); + + dout(10) << __func__ + << " (q,t,nu)=(" << q << "," << t << "," << nu <<")" << dendl; + + return err; +} + +int ErasureCodeClay::is_repair(const set &want_to_read, + const set &available_chunks) { + + if (includes(available_chunks.begin(), available_chunks.end(), + want_to_read.begin(), want_to_read.end())) return 0; + if (want_to_read.size() > 1) return 0; + + int i = *want_to_read.begin(); + int lost_node_id = (i < k) ? i: i+nu; + for (int x = 0; x < q; x++) { + int node = (lost_node_id/q)*q+x; + node = (node < k) ? node : node-nu; + if (node != i) { // node in the same group other than erased node + if (available_chunks.count(node) == 0) return 0; + } + } + + if (available_chunks.size() < (unsigned)d) return 0; + return 1; +} + +int ErasureCodeClay::minimum_to_repair(const set &want_to_read, + const set &available_chunks, + map>> *minimum) +{ + int i = *want_to_read.begin(); + int lost_node_index = (i < k) ? i : i+nu; + int rep_node_index = 0; + + // add all the nodes in lost node's y column. + vector> sub_chunk_ind; + get_repair_subchunks(lost_node_index, sub_chunk_ind); + if ((available_chunks.size() >= (unsigned)d)) { + for (int j = 0; j < q; j++) { + if (j != lost_node_index%q) { + rep_node_index = (lost_node_index/q)*q+j; + if (rep_node_index < k) { + minimum->insert(make_pair(rep_node_index, sub_chunk_ind)); + } else if (rep_node_index >= k+nu) { + minimum->insert(make_pair(rep_node_index-nu, sub_chunk_ind)); + } + } + } + for (auto chunk : available_chunks) { + if (minimum->size() >= (unsigned)d) { + break; + } + if (!minimum->count(chunk)) { + minimum->emplace(chunk, sub_chunk_ind); + } + } + } else { + dout(0) << "minimum_to_repair: shouldn't have come here" << dendl; + ceph_assert(0); + } + ceph_assert(minimum->size() == (unsigned)d); + return 0; +} + +void ErasureCodeClay::get_repair_subchunks(const int &lost_node, + vector> &repair_sub_chunks_ind) +{ + const int y_lost = lost_node / q; + const int x_lost = lost_node % q; + + const int seq_sc_count = pow_int(q, t-1-y_lost); + const int num_seq = pow_int(q, y_lost); + + int index = x_lost * seq_sc_count; + for (int ind_seq = 0; ind_seq < num_seq; ind_seq++) { + repair_sub_chunks_ind.push_back(make_pair(index, seq_sc_count)); + index += q * seq_sc_count; + } +} + +int ErasureCodeClay::get_repair_sub_chunk_count(const set &want_to_read) +{ + int weight_vector[t]; + std::fill(weight_vector, weight_vector + t, 0); + for (auto to_read : want_to_read) { + weight_vector[to_read / q]++; + } + + int repair_subchunks_count = 1; + for (int y = 0; y < t; y++) { + repair_subchunks_count = repair_subchunks_count*(q-weight_vector[y]); + } + + return sub_chunk_no - repair_subchunks_count; +} + +int ErasureCodeClay::repair(const set &want_to_read, + const map &chunks, + map *repaired, int chunk_size) +{ + + ceph_assert((want_to_read.size() == 1) && (chunks.size() == (unsigned)d)); + + int repair_sub_chunk_no = get_repair_sub_chunk_count(want_to_read); + vector> repair_sub_chunks_ind; + + unsigned repair_blocksize = chunks.begin()->second.length(); + assert(repair_blocksize%repair_sub_chunk_no == 0); + + unsigned sub_chunksize = repair_blocksize/repair_sub_chunk_no; + unsigned chunksize = sub_chunk_no*sub_chunksize; + + ceph_assert(chunksize == (unsigned)chunk_size); + + map recovered_data; + map helper_data; + set aloof_nodes; + + for (int i = 0; i < k + m; i++) { + // included helper data only for d+nu nodes. + if (auto found = chunks.find(i); found != chunks.end()) { // i is a helper + if (isecond; + } else { + helper_data[i+nu] = found->second; + } + } else { + if (i != *want_to_read.begin()) { // aloof node case. + int aloof_node_id = (i < k) ? i: i+nu; + aloof_nodes.insert(aloof_node_id); + } else { + bufferptr ptr(buffer::create_aligned(chunksize, SIMD_ALIGN)); + ptr.zero(); + int lost_node_id = (i < k) ? i : i+nu; + (*repaired)[i].push_back(ptr); + recovered_data[lost_node_id] = (*repaired)[i]; + get_repair_subchunks(lost_node_id, repair_sub_chunks_ind); + } + } + } + + // this is for shortened codes i.e., when nu > 0 + for (int i=k; i < k+nu; i++) { + bufferptr ptr(buffer::create_aligned(repair_blocksize, SIMD_ALIGN)); + ptr.zero(); + helper_data[i].push_back(ptr); + } + + ceph_assert(helper_data.size()+aloof_nodes.size()+recovered_data.size() == + (unsigned) q*t); + + int r = repair_one_lost_chunk(recovered_data, aloof_nodes, + helper_data, repair_blocksize, + repair_sub_chunks_ind); + + // clear buffers created for the purpose of shortening + for (int i = k; i < k+nu; i++) { + helper_data[i].clear(); + } + + return r; +} + +int ErasureCodeClay::repair_one_lost_chunk(map &recovered_data, + set &aloof_nodes, + map &helper_data, + int repair_blocksize, + vector> &repair_sub_chunks_ind) +{ + unsigned repair_subchunks = (unsigned)sub_chunk_no / q; + unsigned sub_chunksize = repair_blocksize / repair_subchunks; + + int z_vec[t]; + map > ordered_planes; + map repair_plane_to_ind; + int count_retrieved_sub_chunks = 0; + int plane_ind = 0; + + bufferptr buf(buffer::create_aligned(sub_chunksize, SIMD_ALIGN)); + bufferlist temp_buf; + temp_buf.push_back(buf); + + for (auto [index,count] : repair_sub_chunks_ind) { + for (int j = index; j < index + count; j++) { + get_plane_vector(j, z_vec); + int order = 0; + // check across all erasures and aloof nodes + for ([[maybe_unused]] auto& [node, bl] : recovered_data) { + if (node % q == z_vec[node / q]) order++; + (void)bl; // silence -Wunused-variable + } + for (auto node : aloof_nodes) { + if (node % q == z_vec[node / q]) order++; + } + ceph_assert(order > 0); + ordered_planes[order].insert(j); + // to keep track of a sub chunk within helper buffer recieved + repair_plane_to_ind[j] = plane_ind; + plane_ind++; + } + } + assert((unsigned)plane_ind == repair_subchunks); + + int plane_count = 0; + for (int i = 0; i < q*t; i++) { + if (U_buf[i].length() == 0) { + bufferptr buf(buffer::create_aligned(sub_chunk_no*sub_chunksize, SIMD_ALIGN)); + buf.zero(); + U_buf[i].push_back(std::move(buf)); + } + } + + int lost_chunk; + int count = 0; + for ([[maybe_unused]] auto& [node, bl] : recovered_data) { + lost_chunk = node; + count++; + (void)bl; // silence -Wunused-variable + } + ceph_assert(count == 1); + + set erasures; + for (int i = 0; i < q; i++) { + erasures.insert(lost_chunk - lost_chunk % q + i); + } + for (auto node : aloof_nodes) { + erasures.insert(node); + } + + for (int order = 1; ;order++) { + if (ordered_planes.count(order) == 0) { + break; + } + plane_count += ordered_planes[order].size(); + for (auto z : ordered_planes[order]) { + get_plane_vector(z, z_vec); + + for (int y = 0; y < t; y++) { + for (int x = 0; x < q; x++) { + int node_xy = y*q + x; + map known_subchunks; + map pftsubchunks; + set pft_erasures; + if (erasures.count(node_xy) == 0) { + assert(helper_data.count(node_xy) > 0); + int z_sw = z + (x - z_vec[y])*pow_int(q,t-1-y); + int node_sw = y*q + z_vec[y]; + int i0 = 0, i1 = 1, i2 = 2, i3 = 3; + if (z_vec[y] > x) { + i0 = 1; + i1 = 0; + i2 = 3; + i3 = 2; + } + if (aloof_nodes.count(node_sw) > 0) { + assert(repair_plane_to_ind.count(z) > 0); + assert(repair_plane_to_ind.count(z_sw) > 0); + pft_erasures.insert(i2); + known_subchunks[i0].substr_of(helper_data[node_xy], repair_plane_to_ind[z]*sub_chunksize, sub_chunksize); + known_subchunks[i3].substr_of(U_buf[node_sw], z_sw*sub_chunksize, sub_chunksize); + pftsubchunks[i0] = known_subchunks[i0]; + pftsubchunks[i1] = temp_buf; + pftsubchunks[i2].substr_of(U_buf[node_xy], z*sub_chunksize, sub_chunksize); + pftsubchunks[i3] = known_subchunks[i3]; + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned(SIMD_ALIGN); + } + pft.erasure_code->decode_chunks(pft_erasures, known_subchunks, &pftsubchunks); + } else { + ceph_assert(helper_data.count(node_sw) > 0); + ceph_assert(repair_plane_to_ind.count(z) > 0); + if (z_vec[y] != x){ + pft_erasures.insert(i2); + ceph_assert(repair_plane_to_ind.count(z_sw) > 0); + known_subchunks[i0].substr_of(helper_data[node_xy], repair_plane_to_ind[z]*sub_chunksize, sub_chunksize); + known_subchunks[i1].substr_of(helper_data[node_sw], repair_plane_to_ind[z_sw]*sub_chunksize, sub_chunksize); + pftsubchunks[i0] = known_subchunks[i0]; + pftsubchunks[i1] = known_subchunks[i1]; + pftsubchunks[i2].substr_of(U_buf[node_xy], z*sub_chunksize, sub_chunksize); + pftsubchunks[i3].substr_of(temp_buf, 0, sub_chunksize); + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned(SIMD_ALIGN); + } + pft.erasure_code->decode_chunks(pft_erasures, known_subchunks, &pftsubchunks); + } else { + char* uncoupled_chunk = U_buf[node_xy].c_str(); + char* coupled_chunk = helper_data[node_xy].c_str(); + memcpy(&uncoupled_chunk[z*sub_chunksize], + &coupled_chunk[repair_plane_to_ind[z]*sub_chunksize], + sub_chunksize); + } + } + } + } // x + } // y + ceph_assert(erasures.size() <= (unsigned)m); + decode_uncoupled(erasures, z, sub_chunksize); + + for (auto i : erasures) { + int x = i % q; + int y = i / q; + int node_sw = y*q+z_vec[y]; + int z_sw = z + (x - z_vec[y]) * pow_int(q,t-1-y); + set pft_erasures; + map known_subchunks; + map pftsubchunks; + int i0 = 0, i1 = 1, i2 = 2, i3 = 3; + if (z_vec[y] > x) { + i0 = 1; + i1 = 0; + i2 = 3; + i3 = 2; + } + // make sure it is not an aloof node before you retrieve repaired_data + if (aloof_nodes.count(i) == 0) { + if (x == z_vec[y]) { // hole-dot pair (type 0) + char* coupled_chunk = recovered_data[i].c_str(); + char* uncoupled_chunk = U_buf[i].c_str(); + memcpy(&coupled_chunk[z*sub_chunksize], + &uncoupled_chunk[z*sub_chunksize], + sub_chunksize); + count_retrieved_sub_chunks++; + } else { + ceph_assert(y == lost_chunk / q); + ceph_assert(node_sw == lost_chunk); + ceph_assert(helper_data.count(i) > 0); + pft_erasures.insert(i1); + known_subchunks[i0].substr_of(helper_data[i], repair_plane_to_ind[z]*sub_chunksize, sub_chunksize); + known_subchunks[i2].substr_of(U_buf[i], z*sub_chunksize, sub_chunksize); + + pftsubchunks[i0] = known_subchunks[i0]; + pftsubchunks[i1].substr_of(recovered_data[node_sw], z_sw*sub_chunksize, sub_chunksize); + pftsubchunks[i2] = known_subchunks[i2]; + pftsubchunks[i3] = temp_buf; + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned(SIMD_ALIGN); + } + pft.erasure_code->decode_chunks(pft_erasures, known_subchunks, &pftsubchunks); + } + } + } // recover all erasures + } // planes of particular order + } // order + + return 0; +} + + +int ErasureCodeClay::decode_layered(set &erased_chunks, + map *chunks) +{ + int num_erasures = erased_chunks.size(); + + int size = (*chunks)[0].length(); + ceph_assert(size%sub_chunk_no == 0); + int sc_size = size / sub_chunk_no; + + ceph_assert(num_erasures > 0); + + for (int i = k+nu; (num_erasures < m) && (i < q*t); i++) { + if ([[maybe_unused]] auto [it, added] = erased_chunks.emplace(i); added) { + num_erasures++; + (void)it; // silence -Wunused-variable + } + } + ceph_assert(num_erasures == m); + + int max_iscore = get_max_iscore(erased_chunks); + int order[sub_chunk_no]; + int z_vec[t]; + for (int i = 0; i < q*t; i++) { + if (U_buf[i].length() == 0) { + bufferptr buf(buffer::create_aligned(size, SIMD_ALIGN)); + buf.zero(); + U_buf[i].push_back(std::move(buf)); + } + } + + set_planes_sequential_decoding_order(order, erased_chunks); + + for (int iscore = 0; iscore <= max_iscore; iscore++) { + for (int z = 0; z < sub_chunk_no; z++) { + if (order[z] == iscore) { + decode_erasures(erased_chunks, z, chunks, sc_size); + } + } + + for (int z = 0; z < sub_chunk_no; z++) { + if (order[z] == iscore) { + get_plane_vector(z, z_vec); + for (auto node_xy : erased_chunks) { + int x = node_xy % q; + int y = node_xy / q; + int node_sw = y*q+z_vec[y]; + if (z_vec[y] != x) { + if (erased_chunks.count(node_sw) == 0) { + recover_type1_erasure(chunks, x, y, z, z_vec, sc_size); + } else if (z_vec[y] < x){ + ceph_assert(erased_chunks.count(node_sw) > 0); + ceph_assert(z_vec[y] != x); + get_coupled_from_uncoupled(chunks, x, y, z, z_vec, sc_size); + } + } else { + char* C = (*chunks)[node_xy].c_str(); + char* U = U_buf[node_xy].c_str(); + memcpy(&C[z*sc_size], &U[z*sc_size], sc_size); + } + } + } + } // plane + } // iscore, order + + return 0; +} + +int ErasureCodeClay::decode_erasures(const set& erased_chunks, int z, + map* chunks, int sc_size) +{ + int z_vec[t]; + + get_plane_vector(z, z_vec); + + for (int x = 0; x < q; x++) { + for (int y = 0; y < t; y++) { + int node_xy = q*y+x; + int node_sw = q*y+z_vec[y]; + if (erased_chunks.count(node_xy) == 0) { + if (z_vec[y] < x) { + get_uncoupled_from_coupled(chunks, x, y, z, z_vec, sc_size); + } else if (z_vec[y] == x) { + char* uncoupled_chunk = U_buf[node_xy].c_str(); + char* coupled_chunk = (*chunks)[node_xy].c_str(); + memcpy(&uncoupled_chunk[z*sc_size], &coupled_chunk[z*sc_size], sc_size); + } else { + if (erased_chunks.count(node_sw) > 0) { + get_uncoupled_from_coupled(chunks, x, y, z, z_vec, sc_size); + } + } + } + } + } + return decode_uncoupled(erased_chunks, z, sc_size); +} + +int ErasureCodeClay::decode_uncoupled(const set& erased_chunks, int z, int sc_size) +{ + map known_subchunks; + map all_subchunks; + + for (int i = 0; i < q*t; i++) { + if (erased_chunks.count(i) == 0) { + known_subchunks[i].substr_of(U_buf[i], z*sc_size, sc_size); + all_subchunks[i] = known_subchunks[i]; + } else { + all_subchunks[i].substr_of(U_buf[i], z*sc_size, sc_size); + } + all_subchunks[i].rebuild_aligned_size_and_memory(sc_size, SIMD_ALIGN); + assert(all_subchunks[i].is_contiguous()); + } + + mds.erasure_code->decode_chunks(erased_chunks, known_subchunks, &all_subchunks); + return 0; +} + +void ErasureCodeClay::set_planes_sequential_decoding_order(int* order, set& erasures) { + int z_vec[t]; + for (int z = 0; z < sub_chunk_no; z++) { + get_plane_vector(z,z_vec); + order[z] = 0; + for (auto i : erasures) { + if (i % q == z_vec[i / q]) { + order[z] = order[z] + 1; + } + } + } +} + +void ErasureCodeClay::recover_type1_erasure(map* chunks, + int x, int y, int z, + int* z_vec, int sc_size) +{ + set erased_chunks; + + int node_xy = y*q+x; + int node_sw = y*q+z_vec[y]; + int z_sw = z + (x - z_vec[y]) * pow_int(q,t-1-y); + + map known_subchunks; + map pftsubchunks; + bufferptr ptr(buffer::create_aligned(sc_size, SIMD_ALIGN)); + ptr.zero(); + + int i0 = 0, i1 = 1, i2 = 2, i3 = 3; + if (z_vec[y] > x) { + i0 = 1; + i1 = 0; + i2 = 3; + i3 = 2; + } + + erased_chunks.insert(i0); + pftsubchunks[i0].substr_of((*chunks)[node_xy], z * sc_size, sc_size); + known_subchunks[i1].substr_of((*chunks)[node_sw], z_sw * sc_size, sc_size); + known_subchunks[i2].substr_of(U_buf[node_xy], z * sc_size, sc_size); + pftsubchunks[i1] = known_subchunks[i1]; + pftsubchunks[i2] = known_subchunks[i2]; + pftsubchunks[i3].push_back(ptr); + + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned_size_and_memory(sc_size, SIMD_ALIGN); + } + + pft.erasure_code->decode_chunks(erased_chunks, known_subchunks, &pftsubchunks); +} + +void ErasureCodeClay::get_coupled_from_uncoupled(map* chunks, + int x, int y, int z, + int* z_vec, int sc_size) +{ + set erased_chunks = {0, 1}; + + int node_xy = y*q+x; + int node_sw = y*q+z_vec[y]; + int z_sw = z + (x - z_vec[y]) * pow_int(q,t-1-y); + + ceph_assert(z_vec[y] < x); + map uncoupled_subchunks; + uncoupled_subchunks[2].substr_of(U_buf[node_xy], z * sc_size, sc_size); + uncoupled_subchunks[3].substr_of(U_buf[node_sw], z_sw * sc_size, sc_size); + + map pftsubchunks; + pftsubchunks[0].substr_of((*chunks)[node_xy], z * sc_size, sc_size); + pftsubchunks[1].substr_of((*chunks)[node_sw], z_sw * sc_size, sc_size); + pftsubchunks[2] = uncoupled_subchunks[2]; + pftsubchunks[3] = uncoupled_subchunks[3]; + + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned_size_and_memory(sc_size, SIMD_ALIGN); + } + pft.erasure_code->decode_chunks(erased_chunks, uncoupled_subchunks, &pftsubchunks); +} + +void ErasureCodeClay::get_uncoupled_from_coupled(map* chunks, + int x, int y, int z, + int* z_vec, int sc_size) +{ + set erased_chunks = {2, 3}; + + int node_xy = y*q+x; + int node_sw = y*q+z_vec[y]; + int z_sw = z + (x - z_vec[y]) * pow_int(q,t-1-y); + + int i0 = 0, i1 = 1, i2 = 2, i3 = 3; + if (z_vec[y] > x) { + i0 = 1; + i1 = 0; + i2 = 3; + i3 = 2; + } + map coupled_subchunks; + coupled_subchunks[i0].substr_of((*chunks)[node_xy], z * sc_size, sc_size); + coupled_subchunks[i1].substr_of((*chunks)[node_sw], z_sw * sc_size, sc_size); + + map pftsubchunks; + pftsubchunks[0] = coupled_subchunks[0]; + pftsubchunks[1] = coupled_subchunks[1]; + pftsubchunks[i2].substr_of(U_buf[node_xy], z * sc_size, sc_size); + pftsubchunks[i3].substr_of(U_buf[node_sw], z_sw * sc_size, sc_size); + for (int i=0; i<3; i++) { + pftsubchunks[i].rebuild_aligned_size_and_memory(sc_size, SIMD_ALIGN); + } + pft.erasure_code->decode_chunks(erased_chunks, coupled_subchunks, &pftsubchunks); +} + +int ErasureCodeClay::get_max_iscore(set& erased_chunks) +{ + int weight_vec[t]; + int iscore = 0; + memset(weight_vec, 0, sizeof(int)*t); + + for (auto i : erased_chunks) { + if (weight_vec[i / q] == 0) { + weight_vec[i / q] = 1; + iscore++; + } + } + return iscore; +} + +void ErasureCodeClay::get_plane_vector(int z, int* z_vec) +{ + for (int i = 0; i < t; i++) { + z_vec[t-1-i] = z % q; + z = (z - z_vec[t-1-i]) / q; + } +} diff --git a/src/erasure-code/clay/ErasureCodeClay.h b/src/erasure-code/clay/ErasureCodeClay.h new file mode 100644 index 00000000..9b23b990 --- /dev/null +++ b/src/erasure-code/clay/ErasureCodeClay.h @@ -0,0 +1,126 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2018 Indian Institute of Science + * + * Author: Myna Vajha + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_CLAY_H +#define CEPH_ERASURE_CODE_CLAY_H + +#include "include/err.h" +#include "include/buffer_fwd.h" +#include "erasure-code/ErasureCode.h" + +class ErasureCodeClay final : public ceph::ErasureCode { +public: + std::string DEFAULT_K{"4"}; + std::string DEFAULT_M{"2"}; + std::string DEFAULT_W{"8"}; + int k = 0, m = 0, d = 0, w = 8; + int q = 0, t = 0, nu = 0; + int sub_chunk_no = 0; + + std::map U_buf; + + struct ScalarMDS { + ceph::ErasureCodeInterfaceRef erasure_code; + ceph::ErasureCodeProfile profile; + }; + ScalarMDS mds; + ScalarMDS pft; + const std::string directory; + + explicit ErasureCodeClay(const std::string& dir) + : directory(dir) + {} + + ~ErasureCodeClay() override; + + unsigned int get_chunk_count() const override { + return k+m; + } + + unsigned int get_data_chunk_count() const override { + return k; + } + + int get_sub_chunk_count() override { + return sub_chunk_no; + } + + unsigned int get_chunk_size(unsigned int object_size) const override; + + int minimum_to_decode(const std::set &want_to_read, + const std::set &available, + std::map>> *minimum) override; + + int decode(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded, int chunk_size) override; + + int encode_chunks(const std::set &want_to_encode, + std::map *encoded) override; + + int decode_chunks(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded) override; + + int init(ceph::ErasureCodeProfile &profile, std::ostream *ss) override; + + int is_repair(const std::set &want_to_read, + const std::set &available_chunks); + + int get_repair_sub_chunk_count(const std::set &want_to_read); + + virtual int parse(ceph::ErasureCodeProfile &profile, std::ostream *ss); + +private: + int minimum_to_repair(const std::set &want_to_read, + const std::set &available_chunks, + std::map>> *minimum); + + int repair(const std::set &want_to_read, + const std::map &chunks, + std::map *recovered, int chunk_size); + + int decode_layered(std::set& erased_chunks, std::map* chunks); + + int repair_one_lost_chunk(std::map &recovered_data, std::set &aloof_nodes, + std::map &helper_data, int repair_blocksize, + std::vector> &repair_sub_chunks_ind); + + void get_repair_subchunks(const int &lost_node, + std::vector> &repair_sub_chunks_ind); + + int decode_erasures(const std::set& erased_chunks, int z, + std::map* chunks, int sc_size); + + int decode_uncoupled(const std::set& erasures, int z, int ss_size); + + void set_planes_sequential_decoding_order(int* order, std::set& erasures); + + void recover_type1_erasure(std::map* chunks, int x, int y, int z, + int* z_vec, int sc_size); + + void get_uncoupled_from_coupled(std::map* chunks, int x, int y, int z, + int* z_vec, int sc_size); + + void get_coupled_from_uncoupled(std::map* chunks, int x, int y, int z, + int* z_vec, int sc_size); + + void get_plane_vector(int z, int* z_vec); + + int get_max_iscore(std::set& erased_chunks); +}; + +#endif diff --git a/src/erasure-code/clay/ErasureCodePluginClay.cc b/src/erasure-code/clay/ErasureCodePluginClay.cc new file mode 100644 index 00000000..cb147351 --- /dev/null +++ b/src/erasure-code/clay/ErasureCodePluginClay.cc @@ -0,0 +1,44 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2018 Indian Institute of Science + * + * Author: Myna Vajha + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include "ceph_ver.h" +#include "common/debug.h" +#include "ErasureCodePluginClay.h" +#include "ErasureCodeClay.h" + +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _prefix(_dout) + +int ErasureCodePluginClay::factory(const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) { + auto interface = std::make_unique(directory); + if (int r = interface->init(profile, ss); r) { + return r; + } + *erasure_code = ErasureCodeInterfaceRef(interface.release()); + return 0; +}; + +const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; } + +int __erasure_code_init(char *plugin_name, char *directory) +{ + ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); + return instance.add(plugin_name, new ErasureCodePluginClay()); +} diff --git a/src/erasure-code/clay/ErasureCodePluginClay.h b/src/erasure-code/clay/ErasureCodePluginClay.h new file mode 100644 index 00000000..6efaa198 --- /dev/null +++ b/src/erasure-code/clay/ErasureCodePluginClay.h @@ -0,0 +1,30 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2018 Indian Institute of Science + * + * Author: Myna Vajha + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_PLUGIN_CLAY_H +#define CEPH_ERASURE_CODE_PLUGIN_CLAY_H + +#include "erasure-code/ErasureCodePlugin.h" + +class ErasureCodePluginClay : public ErasureCodePlugin { +public: + int factory(const std::string& directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + ostream *ss) override; +}; + +#endif diff --git a/src/erasure-code/isa/CMakeLists.txt b/src/erasure-code/isa/CMakeLists.txt new file mode 100644 index 00000000..cc489211 --- /dev/null +++ b/src/erasure-code/isa/CMakeLists.txt @@ -0,0 +1,67 @@ +# ISA +set(isal_src_dir ${CMAKE_SOURCE_DIR}/src/isa-l) +include_directories(${isal_src_dir}/include) + +set(isa_srcs + ${isal_src_dir}/erasure_code/ec_base.c + ${isal_src_dir}/erasure_code/gf_2vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_3vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_4vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_5vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_6vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_vect_dot_prod_sse.asm + ${isal_src_dir}/erasure_code/gf_2vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/gf_3vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/gf_4vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/gf_5vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/gf_6vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/gf_vect_mad_avx2.asm + ${isal_src_dir}/erasure_code/ec_highlevel_func.c + ${isal_src_dir}/erasure_code/gf_2vect_mad_avx.asm + ${isal_src_dir}/erasure_code/gf_3vect_mad_avx.asm + ${isal_src_dir}/erasure_code/gf_4vect_mad_avx.asm + ${isal_src_dir}/erasure_code/gf_5vect_mad_avx.asm + ${isal_src_dir}/erasure_code/gf_6vect_mad_avx.asm + ${isal_src_dir}/erasure_code/gf_vect_mad_avx.asm + ${isal_src_dir}/erasure_code/ec_multibinary.asm + ${isal_src_dir}/erasure_code/gf_2vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_3vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_4vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_5vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_6vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_vect_mad_sse.asm + ${isal_src_dir}/erasure_code/gf_2vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_3vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_4vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_5vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_6vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_vect_dot_prod_avx2.asm + ${isal_src_dir}/erasure_code/gf_vect_mul_avx.asm + ${isal_src_dir}/erasure_code/gf_2vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_3vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_4vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_5vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_6vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_vect_dot_prod_avx.asm + ${isal_src_dir}/erasure_code/gf_vect_mul_sse.asm + ${isal_src_dir}/erasure_code/gf_2vect_dot_prod_avx512.asm + ${isal_src_dir}/erasure_code/gf_2vect_mad_avx512.asm + ${isal_src_dir}/erasure_code/gf_3vect_dot_prod_avx512.asm + ${isal_src_dir}/erasure_code/gf_3vect_mad_avx512.asm + ${isal_src_dir}/erasure_code/gf_4vect_dot_prod_avx512.asm + ${isal_src_dir}/erasure_code/gf_4vect_mad_avx512.asm + ${isal_src_dir}/erasure_code/gf_vect_dot_prod_avx512.asm + ${isal_src_dir}/erasure_code/gf_vect_mad_avx512.asm + ErasureCodeIsa.cc + ErasureCodeIsaTableCache.cc + ErasureCodePluginIsa.cc + xor_op.cc +) + +add_library(ec_isa SHARED + ${isa_srcs} + $) +target_link_libraries(ec_isa ${EXTRALIBS}) +set_target_properties(ec_isa PROPERTIES + INSTALL_RPATH "") +install(TARGETS ec_isa DESTINATION ${erasure_plugin_dir}) diff --git a/src/erasure-code/isa/ErasureCodeIsa.cc b/src/erasure-code/isa/ErasureCodeIsa.cc new file mode 100644 index 00000000..6f2f181f --- /dev/null +++ b/src/erasure-code/isa/ErasureCodeIsa.cc @@ -0,0 +1,421 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +// ----------------------------------------------------------------------------- +#include +#include +// ----------------------------------------------------------------------------- +#include "common/debug.h" +#include "ErasureCodeIsa.h" +#include "xor_op.h" +#include "include/ceph_assert.h" +using namespace std; + +// ----------------------------------------------------------------------------- +extern "C" { +#include "isa-l/include/erasure_code.h" +} +// ----------------------------------------------------------------------------- +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _prefix(_dout) +// ----------------------------------------------------------------------------- + +// ----------------------------------------------------------------------------- + +static ostream& +_prefix(std::ostream* _dout) +{ + return *_dout << "ErasureCodeIsa: "; +} +// ----------------------------------------------------------------------------- + +const std::string ErasureCodeIsaDefault::DEFAULT_K("7"); +const std::string ErasureCodeIsaDefault::DEFAULT_M("3"); + + +// ----------------------------------------------------------------------------- + +int +ErasureCodeIsa::init(ErasureCodeProfile &profile, ostream *ss) +{ + int err = 0; + err |= parse(profile, ss); + if (err) + return err; + prepare(); + return ErasureCode::init(profile, ss); +} + +// ----------------------------------------------------------------------------- + +unsigned int +ErasureCodeIsa::get_chunk_size(unsigned int object_size) const +{ + unsigned alignment = get_alignment(); + unsigned chunk_size = ( object_size + k - 1 ) / k; + dout(20) << "get_chunk_size: chunk_size " << chunk_size + << " must be modulo " << alignment << dendl; + unsigned modulo = chunk_size % alignment; + if (modulo) { + dout(10) << "get_chunk_size: " << chunk_size + << " padded to " << chunk_size + alignment - modulo << dendl; + chunk_size += alignment - modulo; + } + return chunk_size; +} + +// ----------------------------------------------------------------------------- + +int ErasureCodeIsa::encode_chunks(const set &want_to_encode, + map *encoded) +{ + char *chunks[k + m]; + for (int i = 0; i < k + m; i++) + chunks[i] = (*encoded)[i].c_str(); + isa_encode(&chunks[0], &chunks[k], (*encoded)[0].length()); + return 0; +} + +int ErasureCodeIsa::decode_chunks(const set &want_to_read, + const map &chunks, + map *decoded) +{ + unsigned blocksize = (*chunks.begin()).second.length(); + int erasures[k + m + 1]; + int erasures_count = 0; + char *data[k]; + char *coding[m]; + for (int i = 0; i < k + m; i++) { + if (chunks.find(i) == chunks.end()) { + erasures[erasures_count] = i; + erasures_count++; + } + if (i < k) + data[i] = (*decoded)[i].c_str(); + else + coding[i - k] = (*decoded)[i].c_str(); + } + erasures[erasures_count] = -1; + ceph_assert(erasures_count > 0); + return isa_decode(erasures, data, coding, blocksize); +} + +// ----------------------------------------------------------------------------- + +void +ErasureCodeIsaDefault::isa_encode(char **data, + char **coding, + int blocksize) +{ + + if (m == 1) + // single parity stripe + region_xor((unsigned char**) data, (unsigned char*) coding[0], k, blocksize); + else + ec_encode_data(blocksize, k, m, encode_tbls, + (unsigned char**) data, (unsigned char**) coding); +} + +// ----------------------------------------------------------------------------- + +bool +ErasureCodeIsaDefault::erasure_contains(int *erasures, int i) +{ + for (int l = 0; erasures[l] != -1; l++) { + if (erasures[l] == i) + return true; + } + return false; +} + +// ----------------------------------------------------------------------------- + + + +// ----------------------------------------------------------------------------- + +int +ErasureCodeIsaDefault::isa_decode(int *erasures, + char **data, + char **coding, + int blocksize) +{ + int nerrs = 0; + int i, r, s; + + // count the errors + for (int l = 0; erasures[l] != -1; l++) { + nerrs++; + } + + unsigned char *recover_source[k]; + unsigned char *recover_target[m]; + + memset(recover_source, 0, sizeof (recover_source)); + memset(recover_target, 0, sizeof (recover_target)); + + // --------------------------------------------- + // Assign source and target buffers + // --------------------------------------------- + for (i = 0, s = 0, r = 0; ((r < k) || (s < nerrs)) && (i < (k + m)); i++) { + if (!erasure_contains(erasures, i)) { + if (r < k) { + if (i < k) { + recover_source[r] = (unsigned char*) data[i]; + } else { + recover_source[r] = (unsigned char*) coding[i - k]; + } + r++; + } + } else { + if (s < m) { + if (i < k) { + recover_target[s] = (unsigned char*) data[i]; + } else { + recover_target[s] = (unsigned char*) coding[i - k]; + } + s++; + } + } + } + + if (m == 1) { + // single parity decoding + ceph_assert(1 == nerrs); + dout(20) << "isa_decode: reconstruct using region xor [" << + erasures[0] << "]" << dendl; + region_xor(recover_source, recover_target[0], k, blocksize); + return 0; + } + + + if ((matrixtype == kVandermonde) && + (nerrs == 1) && + (erasures[0] < (k + 1))) { + // use xor decoding if a data chunk is missing or the first coding chunk + dout(20) << "isa_decode: reconstruct using region xor [" << + erasures[0] << "]" << dendl; + ceph_assert(1 == s); + ceph_assert(k == r); + region_xor(recover_source, recover_target[0], k, blocksize); + return 0; + } + + unsigned char d[k * (m + k)]; + unsigned char decode_tbls[k * (m + k)*32]; + unsigned char *p_tbls = decode_tbls; + + int decode_index[k]; + + if (nerrs > m) + return -1; + + std::string erasure_signature; // describes a matrix configuration for caching + + // --------------------------------------------- + // Construct b by removing error rows + // --------------------------------------------- + + for (i = 0, r = 0; i < k; i++, r++) { + char id[128]; + while (erasure_contains(erasures, r)) + r++; + + decode_index[i] = r; + + snprintf(id, sizeof (id), "+%d", r); + erasure_signature += id; + } + + for (int p = 0; p < nerrs; p++) { + char id[128]; + snprintf(id, sizeof (id), "-%d", erasures[p]); + erasure_signature += id; + } + + // --------------------------------------------- + // Try to get an already computed matrix + // --------------------------------------------- + if (!tcache.getDecodingTableFromCache(erasure_signature, p_tbls, matrixtype, k, m)) { + int j; + unsigned char b[k * (m + k)]; + unsigned char c[k * (m + k)]; + + for (i = 0; i < k; i++) { + r = decode_index[i]; + for (j = 0; j < k; j++) + b[k * i + j] = encode_coeff[k * r + j]; + } + // --------------------------------------------- + // Compute inverted matrix + // --------------------------------------------- + + // -------------------------------------------------------- + // Remark: this may fail for certain Vandermonde matrices ! + // There is an advanced way trying to use different + // source chunks to get an invertible matrix, however + // there are also (k,m) combinations which cannot be + // inverted when m chunks are lost and this optimizations + // does not help. Therefor we keep the code simpler. + // -------------------------------------------------------- + if (gf_invert_matrix(b, d, k) < 0) { + dout(0) << "isa_decode: bad matrix" << dendl; + return -1; + } + + for (int p = 0; p < nerrs; p++) { + if (erasures[p] < k) { + // decoding matrix elements for data chunks + for (j = 0; j < k; j++) { + c[k * p + j] = d[k * erasures[p] + j]; + } + } else { + // decoding matrix element for coding chunks + for (i = 0; i < k; i++) { + int s = 0; + for (j = 0; j < k; j++) + s ^= gf_mul(d[j * k + i], + encode_coeff[k * erasures[p] + j]); + + c[k * p + i] = s; + } + } + } + + // --------------------------------------------- + // Initialize Decoding Table + // --------------------------------------------- + ec_init_tables(k, nerrs, c, decode_tbls); + tcache.putDecodingTableToCache(erasure_signature, p_tbls, matrixtype, k, m); + } + // Recover data sources + ec_encode_data(blocksize, + k, nerrs, decode_tbls, recover_source, recover_target); + + + return 0; +} + +// ----------------------------------------------------------------------------- + +unsigned +ErasureCodeIsaDefault::get_alignment() const +{ + return EC_ISA_ADDRESS_ALIGNMENT; +} + +// ----------------------------------------------------------------------------- + +int ErasureCodeIsaDefault::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCode::parse(profile, ss); + err |= to_int("k", profile, &k, DEFAULT_K, ss); + err |= to_int("m", profile, &m, DEFAULT_M, ss); + err |= sanity_check_k_m(k, m, ss); + + if (matrixtype == kVandermonde) { + // these are verified safe values evaluated using the + // benchmarktool and 10*(combinatoric for maximum loss) random + // full erasures + if (k > 32) { + *ss << "Vandermonde: m=" << m + << " should be less/equal than 32 : revert to k=32" << std::endl; + k = 32; + err = -EINVAL; + } + + if (m > 4) { + *ss << "Vandermonde: m=" << m + << " should be less than 5 to guarantee an MDS codec:" + << " revert to m=4" << std::endl; + m = 4; + err = -EINVAL; + } + switch (m) { + case 4: + if (k > 21) { + *ss << "Vandermonde: k=" << k + << " should be less than 22 to guarantee an MDS" + << " codec with m=4: revert to k=21" << std::endl; + k = 21; + err = -EINVAL; + } + break; + default: + ; + } + } + return err; +} + +// ----------------------------------------------------------------------------- + +void +ErasureCodeIsaDefault::prepare() +{ + // setup shared encoding table and coefficients + unsigned char** p_enc_table = + tcache.getEncodingTable(matrixtype, k, m); + + unsigned char** p_enc_coeff = + tcache.getEncodingCoefficient(matrixtype, k, m); + + if (!*p_enc_coeff) { + dout(10) << "[ cache tables ] creating coeff for k=" << + k << " m=" << m << dendl; + // build encoding coefficients which need to be computed once for each (k,m) + encode_coeff = (unsigned char*) malloc(k * (m + k)); + + if (matrixtype == kVandermonde) + gf_gen_rs_matrix(encode_coeff, k + m, k); + if (matrixtype == kCauchy) + gf_gen_cauchy1_matrix(encode_coeff, k + m, k); + + // either our new created coefficients are stored or if they have been + // created in the meanwhile the locally allocated coefficients will be + // freed by setEncodingCoefficient + encode_coeff = tcache.setEncodingCoefficient(matrixtype, k, m, encode_coeff); + } else { + encode_coeff = *p_enc_coeff; + } + + if (!*p_enc_table) { + dout(10) << "[ cache tables ] creating tables for k=" << + k << " m=" << m << dendl; + // build encoding table which needs to be computed once for each (k,m) + encode_tbls = (unsigned char*) malloc(k * (m + k)*32); + ec_init_tables(k, m, &encode_coeff[k * k], encode_tbls); + + // either our new created table is stored or if it has been + // created in the meanwhile the locally allocated table will be + // freed by setEncodingTable + encode_tbls = tcache.setEncodingTable(matrixtype, k, m, encode_tbls); + } else { + encode_tbls = *p_enc_table; + } + + unsigned memory_lru_cache = + k * (m + k) * 32 * tcache.decoding_tables_lru_length; + + dout(10) << "[ cache memory ] = " << memory_lru_cache << " bytes" << + " [ matrix ] = " << + ((matrixtype == kVandermonde) ? "Vandermonde" : "Cauchy") << dendl; + + ceph_assert((matrixtype == kVandermonde) || (matrixtype == kCauchy)); + +} +// ----------------------------------------------------------------------------- diff --git a/src/erasure-code/isa/ErasureCodeIsa.h b/src/erasure-code/isa/ErasureCodeIsa.h new file mode 100644 index 00000000..d67b918f --- /dev/null +++ b/src/erasure-code/isa/ErasureCodeIsa.h @@ -0,0 +1,153 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +/** + * @file ErasureCodeIsa.cc + * + * @brief Erasure Code CODEC using the INTEL ISA-L library. + * + * The INTEL ISA-L library supports two pre-defined encoding matrices (cauchy = default, reed_sol_van = default) + * The default CODEC implementation using these two matrices is implemented in class ErasureCodeIsaDefault. + * ISA-L allows to use custom matrices which might be added later as implementations deriving from the base class ErasoreCodeIsa. + */ + +#ifndef CEPH_ERASURE_CODE_ISA_L_H +#define CEPH_ERASURE_CODE_ISA_L_H + +// ----------------------------------------------------------------------------- +#include "erasure-code/ErasureCode.h" +#include "ErasureCodeIsaTableCache.h" +// ----------------------------------------------------------------------------- + +class ErasureCodeIsa : public ErasureCode { +public: + + enum eMatrix { + kVandermonde = 0, kCauchy = 1 + }; + + int k; + int m; + int w; + + ErasureCodeIsaTableCache &tcache; + const char *technique; + + ErasureCodeIsa(const char *_technique, + ErasureCodeIsaTableCache &_tcache) : + k(0), + m(0), + w(0), + tcache(_tcache), + technique(_technique) + { + } + + + ~ErasureCodeIsa() override + { + } + + unsigned int + get_chunk_count() const override + { + return k + m; + } + + unsigned int + get_data_chunk_count() const override + { + return k; + } + + unsigned int get_chunk_size(unsigned int object_size) const override; + + int encode_chunks(const std::set &want_to_encode, + std::map *encoded) override; + + int decode_chunks(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded) override; + + int init(ErasureCodeProfile &profile, std::ostream *ss) override; + + virtual void isa_encode(char **data, + char **coding, + int blocksize) = 0; + + + virtual int isa_decode(int *erasures, + char **data, + char **coding, + int blocksize) = 0; + + virtual unsigned get_alignment() const = 0; + + virtual void prepare() = 0; + + private: + virtual int parse(ErasureCodeProfile &profile, + std::ostream *ss) = 0; +}; + +// ----------------------------------------------------------------------------- + +class ErasureCodeIsaDefault : public ErasureCodeIsa { +private: + int matrixtype; + +public: + + static const std::string DEFAULT_K; + static const std::string DEFAULT_M; + + unsigned char* encode_coeff; // encoding coefficient + unsigned char* encode_tbls; // encoding table + + ErasureCodeIsaDefault(ErasureCodeIsaTableCache &_tcache, + int matrix = kVandermonde) : + + ErasureCodeIsa("default", _tcache), + encode_coeff(0), encode_tbls(0) + { + matrixtype = matrix; + } + + + ~ErasureCodeIsaDefault() override + { + + } + + void isa_encode(char **data, + char **coding, + int blocksize) override; + + virtual bool erasure_contains(int *erasures, int i); + + int isa_decode(int *erasures, + char **data, + char **coding, + int blocksize) override; + + unsigned get_alignment() const override; + + void prepare() override; + + private: + int parse(ErasureCodeProfile &profile, + std::ostream *ss) override; +}; + +#endif diff --git a/src/erasure-code/isa/ErasureCodeIsaTableCache.cc b/src/erasure-code/isa/ErasureCodeIsaTableCache.cc new file mode 100644 index 00000000..7b176de8 --- /dev/null +++ b/src/erasure-code/isa/ErasureCodeIsaTableCache.cc @@ -0,0 +1,327 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + + +/** + * @file ErasureCodeIsaTableCache.cc + * + * @brief Erasure Code Isa CODEC Table Cache + * + * The INTEL ISA-L library supports two pre-defined encoding matrices (cauchy = default, reed_sol_van = default) + * The default CODEC implementation using these two matrices is implemented in class ErasureCodeIsaDefault. + * ISA-L allows to use custom matrices which might be added later as implementations deriving from the base class ErasoreCodeIsa. + */ + +// ----------------------------------------------------------------------------- +#include "ErasureCodeIsaTableCache.h" +#include "common/debug.h" +// ----------------------------------------------------------------------------- + +// ----------------------------------------------------------------------------- +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _tc_prefix(_dout) +// ----------------------------------------------------------------------------- + +// ----------------------------------------------------------------------------- + +static ostream& +_tc_prefix(std::ostream* _dout) +{ + return *_dout << "ErasureCodeIsaTableCache: "; +} + +// ----------------------------------------------------------------------------- + +ErasureCodeIsaTableCache::~ErasureCodeIsaTableCache() +{ + Mutex::Locker lock(codec_tables_guard); + + codec_technique_tables_t::const_iterator ttables_it; + codec_tables_t::const_iterator tables_it; + codec_table_t::const_iterator table_it; + + std::map::const_iterator lru_map_it; + std::map::const_iterator lru_list_it; + + // clean-up all allocated tables + for (ttables_it = encoding_coefficient.begin(); ttables_it != encoding_coefficient.end(); ++ttables_it) { + for (tables_it = ttables_it->second.begin(); tables_it != ttables_it->second.end(); ++tables_it) { + for (table_it = tables_it->second.begin(); table_it != tables_it->second.end(); ++table_it) { + if (table_it->second) { + if (*(table_it->second)) { + delete *(table_it->second); + } + delete table_it->second; + } + } + } + } + + for (ttables_it = encoding_table.begin(); ttables_it != encoding_table.end(); ++ttables_it) { + for (tables_it = ttables_it->second.begin(); tables_it != ttables_it->second.end(); ++tables_it) { + for (table_it = tables_it->second.begin(); table_it != tables_it->second.end(); ++table_it) { + if (table_it->second) { + if (*(table_it->second)) { + delete *(table_it->second); + } + delete table_it->second; + } + } + } + } + + for (lru_map_it = decoding_tables.begin(); lru_map_it != decoding_tables.end(); ++lru_map_it) { + if (lru_map_it->second) { + delete lru_map_it->second; + } + } + + for (lru_list_it = decoding_tables_lru.begin(); lru_list_it != decoding_tables_lru.end(); ++lru_list_it) { + if (lru_list_it->second) { + delete lru_list_it->second; + } + } +} + +// ----------------------------------------------------------------------------- + +int +ErasureCodeIsaTableCache::getDecodingTableCacheSize(int matrixtype) +{ + Mutex::Locker lock(codec_tables_guard); + if (decoding_tables[matrixtype]) + return decoding_tables[matrixtype]->size(); + else + return -1; +} + +// ----------------------------------------------------------------------------- + +ErasureCodeIsaTableCache::lru_map_t* +ErasureCodeIsaTableCache::getDecodingTables(int matrix_type) +{ + // the caller must hold the guard mutex: + // => Mutex::Locker lock(codec_tables_guard); + + // create an lru_map if not yet allocated + if (!decoding_tables[matrix_type]) { + decoding_tables[matrix_type] = new lru_map_t; + } + return decoding_tables[matrix_type]; +} + +// ----------------------------------------------------------------------------- + +ErasureCodeIsaTableCache::lru_list_t* +ErasureCodeIsaTableCache::getDecodingTablesLru(int matrix_type) +{ + // the caller must hold the guard mutex: + // => Mutex::Locker lock(codec_tables_guard); + + // create an lru_list if not yet allocated + if (!decoding_tables_lru[matrix_type]) { + decoding_tables_lru[matrix_type] = new lru_list_t; + } + return decoding_tables_lru[matrix_type]; +} + +// ----------------------------------------------------------------------------- + +unsigned char** +ErasureCodeIsaTableCache::getEncodingTable(int matrix, int k, int m) +{ + Mutex::Locker lock(codec_tables_guard); + return getEncodingTableNoLock(matrix,k,m); +} + +// ----------------------------------------------------------------------------- + +unsigned char** +ErasureCodeIsaTableCache::getEncodingTableNoLock(int matrix, int k, int m) +{ + // create a pointer to store an encoding table address + if (!encoding_table[matrix][k][m]) { + encoding_table[matrix][k][m] = new (unsigned char*); + *encoding_table[matrix][k][m] = 0; + } + return encoding_table[matrix][k][m]; +} + +// ----------------------------------------------------------------------------- + +unsigned char** +ErasureCodeIsaTableCache::getEncodingCoefficient(int matrix, int k, int m) +{ + Mutex::Locker lock(codec_tables_guard); + return getEncodingCoefficientNoLock(matrix,k,m); +} + +// ----------------------------------------------------------------------------- + +unsigned char** +ErasureCodeIsaTableCache::getEncodingCoefficientNoLock(int matrix, int k, int m) +{ + // create a pointer to store an encoding coefficients address + if (!encoding_coefficient[matrix][k][m]) { + encoding_coefficient[matrix][k][m] = new (unsigned char*); + *encoding_coefficient[matrix][k][m] = 0; + } + return encoding_coefficient[matrix][k][m]; +} + +// ----------------------------------------------------------------------------- + +unsigned char* +ErasureCodeIsaTableCache::setEncodingTable(int matrix, int k, int m, unsigned char* ec_in_table) +{ + Mutex::Locker lock(codec_tables_guard); + unsigned char** ec_out_table = getEncodingTableNoLock(matrix, k, m); + if (*ec_out_table) { + // somebody might have deposited this table in the meanwhile, so clean + // the input table and return the stored one + free (ec_in_table); + return *ec_out_table; + } else { + // we store the provided input table and return this one + *encoding_table[matrix][k][m] = ec_in_table; + return ec_in_table; + } +} + +// ----------------------------------------------------------------------------- + +unsigned char* +ErasureCodeIsaTableCache::setEncodingCoefficient(int matrix, int k, int m, unsigned char* ec_in_coeff) +{ + Mutex::Locker lock(codec_tables_guard); + unsigned char** ec_out_coeff = getEncodingCoefficientNoLock(matrix, k, m); + if (*ec_out_coeff) { + // somebody might have deposited these coefficients in the meanwhile, so clean + // the input coefficients and return the stored ones + free (ec_in_coeff); + return *ec_out_coeff; + } else { + // we store the provided input coefficients and return these + *encoding_coefficient[matrix][k][m] = ec_in_coeff; + return ec_in_coeff; + } +} + +// ----------------------------------------------------------------------------- + +Mutex* +ErasureCodeIsaTableCache::getLock() +{ + return &codec_tables_guard; +} + +// ----------------------------------------------------------------------------- + +bool +ErasureCodeIsaTableCache::getDecodingTableFromCache(std::string &signature, + unsigned char* &table, + int matrixtype, + int k, + int m) +{ + // -------------------------------------------------------------------------- + // LRU decoding matrix cache + // -------------------------------------------------------------------------- + + dout(12) << "[ get table ] = " << signature << dendl; + + // we try to fetch a decoding table from an LRU cache + bool found = false; + + Mutex::Locker lock(codec_tables_guard); + + lru_map_t* decode_tbls_map = + getDecodingTables(matrixtype); + + lru_list_t* decode_tbls_lru = + getDecodingTablesLru(matrixtype); + + if (decode_tbls_map->count(signature)) { + dout(12) << "[ cached table ] = " << signature << dendl; + // copy the table out of the cache + memcpy(table, (*decode_tbls_map)[signature].second.c_str(), k * (m + k)*32); + // find item in LRU queue and push back + dout(12) << "[ cache size ] = " << decode_tbls_lru->size() << dendl; + decode_tbls_lru->splice( (decode_tbls_lru->begin()), *decode_tbls_lru, (*decode_tbls_map)[signature].first); + found = true; + } + + return found; +} + +// ----------------------------------------------------------------------------- + +void +ErasureCodeIsaTableCache::putDecodingTableToCache(std::string &signature, + unsigned char* &table, + int matrixtype, + int k, + int m) +{ + // -------------------------------------------------------------------------- + // LRU decoding matrix cache + // -------------------------------------------------------------------------- + + dout(12) << "[ put table ] = " << signature << dendl; + + // we store a new table to the cache + + bufferptr cachetable; + + Mutex::Locker lock(codec_tables_guard); + + lru_map_t* decode_tbls_map = + getDecodingTables(matrixtype); + + lru_list_t* decode_tbls_lru = + getDecodingTablesLru(matrixtype); + + // evt. shrink the LRU queue/map + if ((int) decode_tbls_lru->size() >= ErasureCodeIsaTableCache::decoding_tables_lru_length) { + dout(12) << "[ shrink lru ] = " << signature << dendl; + // reuse old buffer + cachetable = (*decode_tbls_map)[decode_tbls_lru->back()].second; + + if ((int) cachetable.length() != (k * (m + k)*32)) { + // we need to replace this with a different size buffer + cachetable = buffer::create(k * (m + k)*32); + } + + // remove from map + decode_tbls_map->erase(decode_tbls_lru->back()); + // remove from lru + decode_tbls_lru->pop_back(); + // add to the head of lru + decode_tbls_lru->push_front(signature); + // add the new to the map + (*decode_tbls_map)[signature] = std::make_pair(decode_tbls_lru->begin(), cachetable); + } else { + dout(12) << "[ store table ] = " << signature << dendl; + // allocate a new buffer + cachetable = buffer::create(k * (m + k)*32); + decode_tbls_lru->push_front(signature); + (*decode_tbls_map)[signature] = std::make_pair(decode_tbls_lru->begin(), cachetable); + dout(12) << "[ cache size ] = " << decode_tbls_lru->size() << dendl; + } + + // copy-in the new table + memcpy(cachetable.c_str(), table, k * (m + k)*32); +} diff --git a/src/erasure-code/isa/ErasureCodeIsaTableCache.h b/src/erasure-code/isa/ErasureCodeIsaTableCache.h new file mode 100644 index 00000000..64aaae75 --- /dev/null +++ b/src/erasure-code/isa/ErasureCodeIsaTableCache.h @@ -0,0 +1,105 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +/** + * @file ErasureCodeIsaTableCache.h + * + * @brief Erasure Code Isa CODEC Table Cache + * + * The INTEL ISA-L library supports two pre-defined encoding matrices (cauchy = default, reed_sol_van = default) + * The default CODEC implementation using these two matrices is implemented in class ErasureCodeIsaDefault. + * ISA-L allows to use custom matrices which might be added later as implementations deriving from the base class ErasoreCodeIsa. + */ + +#ifndef CEPH_ERASURE_CODE_ISA_TABLE_CACHE_H +#define CEPH_ERASURE_CODE_ISA_TABLE_CACHE_H + +// ----------------------------------------------------------------------------- +#include "common/Mutex.h" +#include "erasure-code/ErasureCodeInterface.h" +// ----------------------------------------------------------------------------- +#include +// ----------------------------------------------------------------------------- + +class ErasureCodeIsaTableCache { + // --------------------------------------------------------------------------- + // This class implements a table cache for encoding and decoding matrices. + // Encoding matrices are shared for the same (k,m) combination. It supplies + // a decoding matrix lru cache which is shared for identical + // matrix types e.g. there is one cache (lru-list + lru-map) for Cauchy and + // one for Vandermonde matrices! + // --------------------------------------------------------------------------- + +public: + + // the cache size is sufficient up to (12,4) decodings + + static const int decoding_tables_lru_length = 2516; + + typedef std::pair::iterator, bufferptr> lru_entry_t; + typedef std::map< int, unsigned char** > codec_table_t; + typedef std::map< int, codec_table_t > codec_tables_t; + typedef std::map< int, codec_tables_t > codec_technique_tables_t; + + typedef std::map< std::string, lru_entry_t > lru_map_t; + typedef std::list< std::string > lru_list_t; + + ErasureCodeIsaTableCache() : + codec_tables_guard("isa-lru-cache") + { + } + + virtual ~ErasureCodeIsaTableCache(); + + Mutex codec_tables_guard; // mutex used to protect modifications in encoding/decoding table maps + + bool getDecodingTableFromCache(std::string &signature, + unsigned char* &table, + int matrixtype, + int k, + int m); + + void putDecodingTableToCache(std::string&, + unsigned char*&, + int matrixtype, + int k, + int m); + + unsigned char** getEncodingTable(int matrix, int k, int m); + unsigned char** getEncodingCoefficient(int matrix, int k, int m); + + unsigned char** getEncodingTableNoLock(int matrix, int k, int m); + unsigned char** getEncodingCoefficientNoLock(int matrix, int k, int m); + + unsigned char* setEncodingTable(int matrix, int k, int m, unsigned char*); + unsigned char* setEncodingCoefficient(int matrix, int k, int m, unsigned char*); + + int getDecodingTableCacheSize(int matrixtype = 0); + +private: + codec_technique_tables_t encoding_coefficient; // encoding coefficients accessed via table[matrix][k][m] + codec_technique_tables_t encoding_table; // encoding coefficients accessed via table[matrix][k][m] + + std::map decoding_tables; // decoding table cache accessed via map[matrixtype] + std::map decoding_tables_lru; // decoding table lru list accessed via list[matrixtype] + + lru_map_t* getDecodingTables(int matrix_type); + + lru_list_t* getDecodingTablesLru(int matrix_type); + + Mutex* getLock(); + +}; + +#endif diff --git a/src/erasure-code/isa/ErasureCodePluginIsa.cc b/src/erasure-code/isa/ErasureCodePluginIsa.cc new file mode 100644 index 00000000..5eda591b --- /dev/null +++ b/src/erasure-code/isa/ErasureCodePluginIsa.cc @@ -0,0 +1,82 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * + * Author: Andreas-Joachim Peters + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + + +/** + * @file ErasureCodePluginIsa.cc + * + * @brief Erasure Code Plug-in class wrapping the INTEL ISA-L library + * + * The factory plug-in class allows to call individual encoding techniques. + * The INTEL ISA-L library provides two pre-defined encoding matrices + * (cauchy, reed_sol_van = default). + */ + +// ----------------------------------------------------------------------------- +#include "ceph_ver.h" +#include "include/buffer.h" +#include "ErasureCodePluginIsa.h" +#include "ErasureCodeIsa.h" +// ----------------------------------------------------------------------------- + +int ErasureCodePluginIsa::factory(const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) +{ + ErasureCodeIsa *interface; + std::string t; + if (profile.find("technique") == profile.end()) + profile["technique"] = "reed_sol_van"; + t = profile.find("technique")->second; + if ((t == "reed_sol_van")) { + interface = new ErasureCodeIsaDefault(tcache, + ErasureCodeIsaDefault::kVandermonde); + } else { + if ((t == "cauchy")) { + interface = new ErasureCodeIsaDefault(tcache, + ErasureCodeIsaDefault::kCauchy); + } else { + *ss << "technique=" << t << " is not a valid coding technique. " + << " Choose one of the following: " + << "reed_sol_van," + << "cauchy" << std::endl; + return -ENOENT; + } + } + + int r = interface->init(profile, ss); + if (r) { + delete interface; + return r; + } + *erasure_code = ErasureCodeInterfaceRef(interface); + return 0; +} + +// ----------------------------------------------------------------------------- + +const char *__erasure_code_version() +{ + return CEPH_GIT_NICE_VER; +} + +// ----------------------------------------------------------------------------- + +int __erasure_code_init(char *plugin_name, char *directory) +{ + ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); + + return instance.add(plugin_name, new ErasureCodePluginIsa()); +} diff --git a/src/erasure-code/isa/ErasureCodePluginIsa.h b/src/erasure-code/isa/ErasureCodePluginIsa.h new file mode 100644 index 00000000..fc52e10b --- /dev/null +++ b/src/erasure-code/isa/ErasureCodePluginIsa.h @@ -0,0 +1,34 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_PLUGIN_ISA_H +#define CEPH_ERASURE_CODE_PLUGIN_ISA_H + +#include "erasure-code/ErasureCodePlugin.h" +#include "ErasureCodeIsaTableCache.h" + +class ErasureCodePluginIsa : public ErasureCodePlugin { +public: + ErasureCodeIsaTableCache tcache; + + int factory(const std::string &directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) override; +}; + +#endif diff --git a/src/erasure-code/isa/README b/src/erasure-code/isa/README new file mode 100644 index 00000000..f5e9fe59 --- /dev/null +++ b/src/erasure-code/isa/README @@ -0,0 +1,63 @@ +============================================ +INTEL ISA library Erasure Coding plugin +============================================ + +Build Requirements +================== +Plug-in build compiles the included sources of ISA-L v2.10 and links them into the plugin. ISA-L implementation is portable and probes CPU features during runtime. Note that the names of the assembler source files have been renamed from *.asm to *.asm.s to be compatible with Automake. + +Run-time Requirements +===================== +None + +Plug-in Configuration +===================== + +Used parameters are: +k : number of data chunks +m : number of coding chunks +technique : cauchy, reed_sol_van + +The plug-in exports only two encoding technique (cauchy, reed_sol_van) using either a Vandermonde matrix or a Cauchy matrix for coding. +By default a Vandermonde matrix is used. Be aware that sometimes the generated Vandermonde matrix is not always invertible and not fully MDS. +Therefore the accepted parameter space has limited to maximum (21,4) and (32,3) for Vandermonde matrices. + +Run the Test suite +================== +cd ceph/src +make unittest_erasure_code_isa +./unittest_erasure_code_isa --gtest_filter=*.* --log-to-stderr=true --debug-ods=20 + +Run the CEPH erasure code benchmark +=================================== +cd ceph/src +make ceph_erasure_code_benchmark + +# consult ./ceph_erasure_code_benchmark -h for help + +# encode performance +./ceph_erasure_code_benchmark -p isa -P k=8 -P m=3 -S 1048576 -i 1000 + +# decode performance one lost +./ceph_erasure_code_benchmark -e 1 -w decode -p isa -P k=8 -P m=3 -S 1048576 -i 1000 + +# decode performance two lost +./ceph_erasure_code_benchmark -e 2 -w decode -p isa -P k=8 -P m=3 -S 1048576 -i 1000 + +# decode performance three lost +./ceph_erasure_code_benchmark -e 3 -w decode -p isa -P k=8 -P m=3 -S 1048576 -i 1000 + + +Developer Notes +=============== +The plugin provides optimal performance for 32-byte aligned buffer start address and +k*32 byte aligned buffer length. The encoding tables are computed only once when the EC +object is created. Decoding Tables have to be computed for each decoding since the available +data/coding sources may change between calls. +Decoding tables are cached in an LRU cache which is sufficiently large up to (12,4). + +For larger configurations the cache might expire the 'oldest' tables and decoding might +slow down. The plug-in uses an optimization to use a pure region XOR to decode single disk +failures if the erased chunk is within the first (k+1) chunks. + +The unittest probes all possible failure scenarios for (12,4) Vandermonde and Cauchy matrices. diff --git a/src/erasure-code/isa/xor_op.cc b/src/erasure-code/isa/xor_op.cc new file mode 100644 index 00000000..2b56e977 --- /dev/null +++ b/src/erasure-code/isa/xor_op.cc @@ -0,0 +1,183 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * * Author: Andreas-Joachim Peters * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +// ----------------------------------------------------------------------------- +#include "xor_op.h" +#include +#include +#include "arch/intel.h" + +#include "include/ceph_assert.h" + +// ----------------------------------------------------------------------------- + + +// ----------------------------------------------------------------------------- + +void +// ----------------------------------------------------------------------------- +byte_xor(unsigned char* cw, unsigned char* dw, unsigned char* ew) +// ----------------------------------------------------------------------------- +{ + while (cw < ew) + *dw++ ^= *cw++; +} + +// ----------------------------------------------------------------------------- + +void +// ----------------------------------------------------------------------------- +vector_xor(vector_op_t* cw, + vector_op_t* dw, + vector_op_t* ew) +// ----------------------------------------------------------------------------- +{ + ceph_assert(is_aligned(cw, EC_ISA_VECTOR_OP_WORDSIZE)); + ceph_assert(is_aligned(dw, EC_ISA_VECTOR_OP_WORDSIZE)); + ceph_assert(is_aligned(ew, EC_ISA_VECTOR_OP_WORDSIZE)); + while (cw < ew) { + *dw++ ^= *cw++; + } +} + + +// ----------------------------------------------------------------------------- + +void +// ----------------------------------------------------------------------------- +region_xor(unsigned char** src, + unsigned char* parity, + int src_size, + unsigned size) +{ + if (!size) { + // nothing to do + return; + } + + if (!src_size) { + // nothing to do + return; + } + + if (src_size == 1) { + // just copy source to parity + memcpy(parity, src[0], size); + return; + } + + unsigned size_left = size; + + // ---------------------------------------------------------- + // region or vector XOR operations require aligned addresses + // ---------------------------------------------------------- + + bool src_aligned = true; + for (int i = 0; i < src_size; i++) { + src_aligned &= is_aligned(src[i], EC_ISA_VECTOR_OP_WORDSIZE); + } + + if (src_aligned && + is_aligned(parity, EC_ISA_VECTOR_OP_WORDSIZE)) { + +#ifdef __x86_64__ + if (ceph_arch_intel_sse2) { + // ----------------------------- + // use SSE2 region xor function + // ----------------------------- + unsigned region_size = + (size / EC_ISA_VECTOR_SSE2_WORDSIZE) * EC_ISA_VECTOR_SSE2_WORDSIZE; + + size_left -= region_size; + // 64-byte region xor + region_sse2_xor((char**) src, (char*) parity, src_size, region_size); + } else +#endif + { + // -------------------------------------------- + // use region xor based on vector xor operation + // -------------------------------------------- + unsigned vector_words = size / EC_ISA_VECTOR_OP_WORDSIZE; + unsigned vector_size = vector_words * EC_ISA_VECTOR_OP_WORDSIZE; + memcpy(parity, src[0], vector_size); + + size_left -= vector_size; + vector_op_t* p_vec = (vector_op_t*) parity; + for (int i = 1; i < src_size; i++) { + vector_op_t* s_vec = (vector_op_t*) src[i]; + vector_op_t* e_vec = s_vec + vector_words; + vector_xor(s_vec, p_vec, e_vec); + } + } + } + + if (size_left) { + // -------------------------------------------------- + // xor the not aligned part with byte-wise region xor + // -------------------------------------------------- + memcpy(parity + size - size_left, src[0] + size - size_left, size_left); + for (int i = 1; i < src_size; i++) { + byte_xor(src[i] + size - size_left, parity + size - size_left, src[i] + size); + } + } +} + +// ----------------------------------------------------------------------------- + +void +// ----------------------------------------------------------------------------- +region_sse2_xor(char** src, + char* parity, + int src_size, + unsigned size) +// ----------------------------------------------------------------------------- +{ +#ifdef __x86_64__ + ceph_assert(!(size % EC_ISA_VECTOR_SSE2_WORDSIZE)); + unsigned char* p; + int d, l; + unsigned i; + unsigned char* vbuf[256]; + + for (int v = 0; v < src_size; v++) { + vbuf[v] = (unsigned char*) src[v]; + } + + l = src_size; + p = (unsigned char*) parity; + + for (i = 0; i < size; i += EC_ISA_VECTOR_SSE2_WORDSIZE) { + asm volatile("movdqa %0,%%xmm0" : : "m" (vbuf[0][i])); + asm volatile("movdqa %0,%%xmm1" : : "m" (vbuf[0][i + 16])); + asm volatile("movdqa %0,%%xmm2" : : "m" (vbuf[0][i + 32])); + asm volatile("movdqa %0,%%xmm3" : : "m" (vbuf[0][i + 48])); + + for (d = 1; d < l; d++) { + asm volatile("movdqa %0,%%xmm4" : : "m" (vbuf[d][i])); + asm volatile("movdqa %0,%%xmm5" : : "m" (vbuf[d][i + 16])); + asm volatile("movdqa %0,%%xmm6" : : "m" (vbuf[d][i + 32])); + asm volatile("movdqa %0,%%xmm7" : : "m" (vbuf[d][i + 48])); + asm volatile("pxor %xmm4,%xmm0"); + asm volatile("pxor %xmm5,%xmm1"); + asm volatile("pxor %xmm6,%xmm2"); + asm volatile("pxor %xmm7,%xmm3"); + } + asm volatile("movntdq %%xmm0,%0" : "=m" (p[i])); + asm volatile("movntdq %%xmm1,%0" : "=m" (p[i + 16])); + asm volatile("movntdq %%xmm2,%0" : "=m" (p[i + 32])); + asm volatile("movntdq %%xmm3,%0" : "=m" (p[i + 48])); + } + + asm volatile("sfence" : : : "memory"); +#endif // __x86_64__ + return; +} diff --git a/src/erasure-code/isa/xor_op.h b/src/erasure-code/isa/xor_op.h new file mode 100644 index 00000000..978b9a95 --- /dev/null +++ b/src/erasure-code/isa/xor_op.h @@ -0,0 +1,87 @@ +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2014 CERN (Switzerland) + * \ + * Author: Andreas-Joachim Peters \ + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef EC_ISA_XOR_OP_H +#define EC_ISA_XOR_OP_H + +// ----------------------------------------------------------------------------- +#include +#include +// ----------------------------------------------------------------------------- + +// ------------------------------------------------------------------------- +// declaration of 64/128-bit vector operations depending on availability +// ------------------------------------------------------------------------- +// ------------------------------------------------------------------------- + +#define EC_ISA_ADDRESS_ALIGNMENT 32u +#define EC_ISA_VECTOR_SSE2_WORDSIZE 64u + +#if __GNUC__ > 4 || \ + ( (__GNUC__ == 4) && (__GNUC_MINOR__ >= 4) ) ||\ + (__clang__ == 1 ) +#ifdef EC_ISA_VECTOR_OP_DEBUG +#pragma message "* using 128-bit vector operations in " __FILE__ +#endif + +// ------------------------------------------------------------------------- +// use 128-bit pointer +// ------------------------------------------------------------------------- +typedef long vector_op_t __attribute__((vector_size(16))); +#define EC_ISA_VECTOR_OP_WORDSIZE 16 +#else +// ------------------------------------------------------------------------- +// use 64-bit pointer +// ------------------------------------------------------------------------- +typedef unsigned long long vector_op_t; +#define EC_ISA_VECTOR_OP_WORDSIZE 8 +#endif + + +// ------------------------------------------------------------------------- +// check if a pointer is aligend to byte_count +// ------------------------------------------------------------------------- +#define is_aligned(POINTER, BYTE_COUNT) \ + (((uintptr_t)(const void *)(POINTER)) % (BYTE_COUNT) == 0) + +// ------------------------------------------------------------------------- +// compute byte-wise XOR of cw and dw block, ew contains the end address of cw +// ------------------------------------------------------------------------- +void +byte_xor(unsigned char* cw, unsigned char* dw, unsigned char* ew); + +// ------------------------------------------------------------------------- +// compute word-wise XOR of cw and dw block, ew contains the end address of cw +// ------------------------------------------------------------------------- +void +vector_xor(vector_op_t* cw, vector_op_t* dw, vector_op_t* ew); + +// ------------------------------------------------------------------------- +// compute region XOR like parity = src[0] ^ src[1] ... ^ src[src_size-] +// ------------------------------------------------------------------------- +void +region_xor(unsigned char** src, unsigned char* parity, int src_size, unsigned size); + +// ------------------------------------------------------------------------- +// compute region XOR like parity = src[0] ^ src[1] ... ^ src[src_size-] +// using SSE2 64-byte operations +// ------------------------------------------------------------------------- +void +region_sse2_xor(char** src /* array of 64-byte aligned source pointer to xor */, + char* parity /* 64-byte aligned output pointer containing the parity */, + int src_size /* size of the source pointer array */, + unsigned size /* size of the region to xor */); + + +#endif // EC_ISA_XOR_OP_H diff --git a/src/erasure-code/jerasure/CMakeLists.txt b/src/erasure-code/jerasure/CMakeLists.txt new file mode 100644 index 00000000..f9cd22e1 --- /dev/null +++ b/src/erasure-code/jerasure/CMakeLists.txt @@ -0,0 +1,103 @@ +# jerasure plugin + +set(jerasure_utils_src + ErasureCodePluginJerasure.cc + ErasureCodeJerasure.cc) + +add_library(jerasure_utils OBJECT ${jerasure_utils_src}) + +# Set the CFLAGS correctly for gf-complete based on SIMD compiler support +set(GF_COMPILE_FLAGS) +if(HAVE_ARMV8_SIMD) + list(APPEND GF_COMPILE_FLAGS ARM_NEON ARCH_AARCH64) +endif() +if(HAVE_ARM_NEON) + list(APPEND GF_COMPILE_FLAGS ARM_NEON) +endif() +if(HAVE_INTEL_SSE) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE) +endif() +if(HAVE_INTEL_SSE2) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE2) +endif() +if(HAVE_INTEL_SSE3) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE3) +endif() +if(HAVE_INTEL_SSSE3) + list(APPEND GF_COMPILE_FLAGS INTEL_SSSE3) +endif() +if(HAVE_INTEL_PCLMUL) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE4_PCLMUL) +endif() +if(HAVE_INTEL_SSE4_1) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE4) +endif() +if(HAVE_INTEL_SSE4_2) + list(APPEND GF_COMPILE_FLAGS INTEL_SSE4) +endif() + +# set this to TRUE to enable debugging of SIMD detection +# inside gf-complete. gf-complete will printf the SIMD +# instructions detected to stdout. +if (FALSE) + list(APPEND GF_COMPILE_FLAGS DEBUG_CPU_DETECTION) +endif() + +set(gf-complete_srcs + gf-complete/src/gf_cpu.c + gf-complete/src/gf_wgen.c + gf-complete/src/gf_w16.c + gf-complete/src/gf.c + gf-complete/src/gf_w32.c + gf-complete/src/gf_w64.c + gf-complete/src/gf_w128.c + gf-complete/src/gf_general.c + gf-complete/src/gf_w4.c + gf-complete/src/gf_rand.c + gf-complete/src/gf_w8.c) + +if(HAVE_ARM_NEON OR HAVE_ARMV8_SIMD) + list(APPEND gf-complete_srcs + gf-complete/src/neon/gf_w4_neon.c + gf-complete/src/neon/gf_w8_neon.c + gf-complete/src/neon/gf_w16_neon.c + gf-complete/src/neon/gf_w32_neon.c + gf-complete/src/neon/gf_w64_neon.c) +endif() + +add_library(gf-complete_objs OBJECT ${gf-complete_srcs}) +set_target_properties(gf-complete_objs PROPERTIES + COMPILE_FLAGS "${SIMD_COMPILE_FLAGS}") +set_target_properties(gf-complete_objs PROPERTIES + COMPILE_DEFINITIONS "${GF_COMPILE_FLAGS}") + +set(jerasure_srcs + jerasure/src/cauchy.c + jerasure/src/galois.c + jerasure/src/jerasure.c + jerasure/src/liberation.c + jerasure/src/reed_sol.c + jerasure_init.cc) +add_library(jerasure_objs OBJECT ${jerasure_srcs}) + +set(ec_jerasure_objs + $ + $ + $ + $) + +add_library(ec_jerasure SHARED ${ec_jerasure_objs}) +set_target_properties(ec_jerasure PROPERTIES + INSTALL_RPATH "") +target_link_libraries(ec_jerasure ${EXTRALIBS}) +install(TARGETS ec_jerasure DESTINATION ${erasure_plugin_dir}) + +# legacy libraries +foreach(flavor ${jerasure_legacy_flavors}) + set(plugin_name "ec_jerasure_${flavor}") + add_library(${plugin_name} SHARED ${ec_jerasure_objs}) + set_target_properties(${plugin_name} PROPERTIES + INSTALL_RPATH "") + install(TARGETS ${plugin_name} DESTINATION ${erasure_plugin_dir}) + add_dependencies(ec_jerasure ${plugin_name}) +endforeach() diff --git a/src/erasure-code/jerasure/ErasureCodeJerasure.cc b/src/erasure-code/jerasure/ErasureCodeJerasure.cc new file mode 100644 index 00000000..fee77904 --- /dev/null +++ b/src/erasure-code/jerasure/ErasureCodeJerasure.cc @@ -0,0 +1,503 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013,2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include "common/debug.h" +#include "ErasureCodeJerasure.h" + + +extern "C" { +#include "jerasure.h" +#include "reed_sol.h" +#include "galois.h" +#include "cauchy.h" +#include "liberation.h" +} + +#define LARGEST_VECTOR_WORDSIZE 16 + +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _prefix(_dout) + +static ostream& _prefix(std::ostream* _dout) +{ + return *_dout << "ErasureCodeJerasure: "; +} + + +int ErasureCodeJerasure::init(ErasureCodeProfile& profile, ostream *ss) +{ + int err = 0; + dout(10) << "technique=" << technique << dendl; + profile["technique"] = technique; + err |= parse(profile, ss); + if (err) + return err; + prepare(); + return ErasureCode::init(profile, ss); +} + +int ErasureCodeJerasure::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCode::parse(profile, ss); + err |= to_int("k", profile, &k, DEFAULT_K, ss); + err |= to_int("m", profile, &m, DEFAULT_M, ss); + err |= to_int("w", profile, &w, DEFAULT_W, ss); + if (chunk_mapping.size() > 0 && (int)chunk_mapping.size() != k + m) { + *ss << "mapping " << profile.find("mapping")->second + << " maps " << chunk_mapping.size() << " chunks instead of" + << " the expected " << k + m << " and will be ignored" << std::endl; + chunk_mapping.clear(); + err = -EINVAL; + } + err |= sanity_check_k_m(k, m, ss); + return err; +} + +unsigned int ErasureCodeJerasure::get_chunk_size(unsigned int object_size) const +{ + unsigned alignment = get_alignment(); + if (per_chunk_alignment) { + unsigned chunk_size = object_size / k; + if (object_size % k) + chunk_size++; + dout(20) << "get_chunk_size: chunk_size " << chunk_size + << " must be modulo " << alignment << dendl; + ceph_assert(alignment <= chunk_size); + unsigned modulo = chunk_size % alignment; + if (modulo) { + dout(10) << "get_chunk_size: " << chunk_size + << " padded to " << chunk_size + alignment - modulo << dendl; + chunk_size += alignment - modulo; + } + return chunk_size; + } else { + unsigned tail = object_size % alignment; + unsigned padded_length = object_size + ( tail ? ( alignment - tail ) : 0 ); + ceph_assert(padded_length % k == 0); + return padded_length / k; + } +} + +int ErasureCodeJerasure::encode_chunks(const set &want_to_encode, + map *encoded) +{ + char *chunks[k + m]; + for (int i = 0; i < k + m; i++) + chunks[i] = (*encoded)[i].c_str(); + jerasure_encode(&chunks[0], &chunks[k], (*encoded)[0].length()); + return 0; +} + +int ErasureCodeJerasure::decode_chunks(const set &want_to_read, + const map &chunks, + map *decoded) +{ + unsigned blocksize = (*chunks.begin()).second.length(); + int erasures[k + m + 1]; + int erasures_count = 0; + char *data[k]; + char *coding[m]; + for (int i = 0; i < k + m; i++) { + if (chunks.find(i) == chunks.end()) { + erasures[erasures_count] = i; + erasures_count++; + } + if (i < k) + data[i] = (*decoded)[i].c_str(); + else + coding[i - k] = (*decoded)[i].c_str(); + } + erasures[erasures_count] = -1; + + ceph_assert(erasures_count > 0); + return jerasure_decode(erasures, data, coding, blocksize); +} + +bool ErasureCodeJerasure::is_prime(int value) +{ + int prime55[] = { + 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71, + 73,79,83,89,97,101,103,107,109,113,127,131,137,139,149, + 151,157,163,167,173,179, + 181,191,193,197,199,211,223,227,229,233,239,241,251,257 + }; + int i; + for (i = 0; i < 55; i++) + if (value == prime55[i]) + return true; + return false; +} + +// +// ErasureCodeJerasureReedSolomonVandermonde +// +void ErasureCodeJerasureReedSolomonVandermonde::jerasure_encode(char **data, + char **coding, + int blocksize) +{ + jerasure_matrix_encode(k, m, w, matrix, data, coding, blocksize); +} + +int ErasureCodeJerasureReedSolomonVandermonde::jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) +{ + return jerasure_matrix_decode(k, m, w, matrix, 1, + erasures, data, coding, blocksize); +} + +unsigned ErasureCodeJerasureReedSolomonVandermonde::get_alignment() const +{ + if (per_chunk_alignment) { + return w * LARGEST_VECTOR_WORDSIZE; + } else { + unsigned alignment = k*w*sizeof(int); + if ( ((w*sizeof(int))%LARGEST_VECTOR_WORDSIZE) ) + alignment = k*w*LARGEST_VECTOR_WORDSIZE; + return alignment; + } +} + +int ErasureCodeJerasureReedSolomonVandermonde::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = 0; + err |= ErasureCodeJerasure::parse(profile, ss); + if (w != 8 && w != 16 && w != 32) { + *ss << "ReedSolomonVandermonde: w=" << w + << " must be one of {8, 16, 32} : revert to " << DEFAULT_W << std::endl; + profile["w"] = "8"; + err |= to_int("w", profile, &w, DEFAULT_W, ss); + err = -EINVAL; + } + err |= to_bool("jerasure-per-chunk-alignment", profile, + &per_chunk_alignment, "false", ss); + return err; +} + +void ErasureCodeJerasureReedSolomonVandermonde::prepare() +{ + matrix = reed_sol_vandermonde_coding_matrix(k, m, w); +} + +// +// ErasureCodeJerasureReedSolomonRAID6 +// +void ErasureCodeJerasureReedSolomonRAID6::jerasure_encode(char **data, + char **coding, + int blocksize) +{ + reed_sol_r6_encode(k, w, data, coding, blocksize); +} + +int ErasureCodeJerasureReedSolomonRAID6::jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) +{ + return jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, blocksize); +} + +unsigned ErasureCodeJerasureReedSolomonRAID6::get_alignment() const +{ + if (per_chunk_alignment) { + return w * LARGEST_VECTOR_WORDSIZE; + } else { + unsigned alignment = k*w*sizeof(int); + if ( ((w*sizeof(int))%LARGEST_VECTOR_WORDSIZE) ) + alignment = k*w*LARGEST_VECTOR_WORDSIZE; + return alignment; + } +} + +int ErasureCodeJerasureReedSolomonRAID6::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCodeJerasure::parse(profile, ss); + profile.erase("m"); + m = 2; + if (w != 8 && w != 16 && w != 32) { + *ss << "ReedSolomonRAID6: w=" << w + << " must be one of {8, 16, 32} : revert to 8 " << std::endl; + profile["w"] = "8"; + err |= to_int("w", profile, &w, DEFAULT_W, ss); + err = -EINVAL; + } + return err; +} + +void ErasureCodeJerasureReedSolomonRAID6::prepare() +{ + matrix = reed_sol_r6_coding_matrix(k, w); +} + +// +// ErasureCodeJerasureCauchy +// +void ErasureCodeJerasureCauchy::jerasure_encode(char **data, + char **coding, + int blocksize) +{ + jerasure_schedule_encode(k, m, w, schedule, + data, coding, blocksize, packetsize); +} + +int ErasureCodeJerasureCauchy::jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) +{ + return jerasure_schedule_decode_lazy(k, m, w, bitmatrix, + erasures, data, coding, blocksize, packetsize, 1); +} + +unsigned ErasureCodeJerasureCauchy::get_alignment() const +{ + if (per_chunk_alignment) { + unsigned alignment = w * packetsize; + unsigned modulo = alignment % LARGEST_VECTOR_WORDSIZE; + if (modulo) + alignment += LARGEST_VECTOR_WORDSIZE - modulo; + return alignment; + } else { + unsigned alignment = k*w*packetsize*sizeof(int); + if ( ((w*packetsize*sizeof(int))%LARGEST_VECTOR_WORDSIZE) ) + alignment = k*w*packetsize*LARGEST_VECTOR_WORDSIZE; + return alignment; + } +} + +int ErasureCodeJerasureCauchy::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCodeJerasure::parse(profile, ss); + err |= to_int("packetsize", profile, &packetsize, DEFAULT_PACKETSIZE, ss); + err |= to_bool("jerasure-per-chunk-alignment", profile, + &per_chunk_alignment, "false", ss); + return err; +} + +void ErasureCodeJerasureCauchy::prepare_schedule(int *matrix) +{ + bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix); + schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix); +} + +ErasureCodeJerasureCauchy::~ErasureCodeJerasureCauchy() +{ + if (bitmatrix) + free(bitmatrix); + if (schedule) + jerasure_free_schedule(schedule); +} + +// +// ErasureCodeJerasureCauchyOrig +// +void ErasureCodeJerasureCauchyOrig::prepare() +{ + int *matrix = cauchy_original_coding_matrix(k, m, w); + prepare_schedule(matrix); + free(matrix); +} + +// +// ErasureCodeJerasureCauchyGood +// +void ErasureCodeJerasureCauchyGood::prepare() +{ + int *matrix = cauchy_good_general_coding_matrix(k, m, w); + prepare_schedule(matrix); + free(matrix); +} + +// +// ErasureCodeJerasureLiberation +// +ErasureCodeJerasureLiberation::~ErasureCodeJerasureLiberation() +{ + if (bitmatrix) + free(bitmatrix); + if (schedule) + jerasure_free_schedule(schedule); +} + +void ErasureCodeJerasureLiberation::jerasure_encode(char **data, + char **coding, + int blocksize) +{ + jerasure_schedule_encode(k, m, w, schedule, data, + coding, blocksize, packetsize); +} + +int ErasureCodeJerasureLiberation::jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) +{ + return jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, + coding, blocksize, packetsize, 1); +} + +unsigned ErasureCodeJerasureLiberation::get_alignment() const +{ + unsigned alignment = k*w*packetsize*sizeof(int); + if ( ((w*packetsize*sizeof(int))%LARGEST_VECTOR_WORDSIZE) ) + alignment = k*w*packetsize*LARGEST_VECTOR_WORDSIZE; + return alignment; +} + +bool ErasureCodeJerasureLiberation::check_k(ostream *ss) const +{ + if (k > w) { + *ss << "k=" << k << " must be less than or equal to w=" << w << std::endl; + return false; + } else { + return true; + } +} + +bool ErasureCodeJerasureLiberation::check_w(ostream *ss) const +{ + if (w <= 2 || !is_prime(w)) { + *ss << "w=" << w << " must be greater than two and be prime" << std::endl; + return false; + } else { + return true; + } +} + +bool ErasureCodeJerasureLiberation::check_packetsize_set(ostream *ss) const +{ + if (packetsize == 0) { + *ss << "packetsize=" << packetsize << " must be set" << std::endl; + return false; + } else { + return true; + } +} + +bool ErasureCodeJerasureLiberation::check_packetsize(ostream *ss) const +{ + if ((packetsize%(sizeof(int))) != 0) { + *ss << "packetsize=" << packetsize + << " must be a multiple of sizeof(int) = " << sizeof(int) << std::endl; + return false; + } else { + return true; + } +} + +int ErasureCodeJerasureLiberation::revert_to_default(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = 0; + *ss << "reverting to k=" << DEFAULT_K << ", w=" + << DEFAULT_W << ", packetsize=" << DEFAULT_PACKETSIZE << std::endl; + profile["k"] = DEFAULT_K; + err |= to_int("k", profile, &k, DEFAULT_K, ss); + profile["w"] = DEFAULT_W; + err |= to_int("w", profile, &w, DEFAULT_W, ss); + profile["packetsize"] = DEFAULT_PACKETSIZE; + err |= to_int("packetsize", profile, &packetsize, DEFAULT_PACKETSIZE, ss); + return err; +} + +int ErasureCodeJerasureLiberation::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCodeJerasure::parse(profile, ss); + err |= to_int("packetsize", profile, &packetsize, DEFAULT_PACKETSIZE, ss); + + bool error = false; + if (!check_k(ss)) + error = true; + if (!check_w(ss)) + error = true; + if (!check_packetsize_set(ss) || !check_packetsize(ss)) + error = true; + if (error) { + revert_to_default(profile, ss); + err = -EINVAL; + } + return err; +} + +void ErasureCodeJerasureLiberation::prepare() +{ + bitmatrix = liberation_coding_bitmatrix(k, w); + schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix); +} + +// +// ErasureCodeJerasureBlaumRoth +// +bool ErasureCodeJerasureBlaumRoth::check_w(ostream *ss) const +{ + // back in Firefly, w = 7 was the default and produced usable + // chunks. Tolerate this value for backward compatibility. + if (w == 7) + return true; + if (w <= 2 || !is_prime(w+1)) { + *ss << "w=" << w << " must be greater than two and " + << "w+1 must be prime" << std::endl; + return false; + } else { + return true; + } +} + +void ErasureCodeJerasureBlaumRoth::prepare() +{ + bitmatrix = blaum_roth_coding_bitmatrix(k, w); + schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix); +} + +// +// ErasureCodeJerasureLiber8tion +// +int ErasureCodeJerasureLiber8tion::parse(ErasureCodeProfile &profile, + ostream *ss) +{ + int err = ErasureCodeJerasure::parse(profile, ss); + profile.erase("m"); + err |= to_int("m", profile, &m, DEFAULT_M, ss); + profile.erase("w"); + err |= to_int("w", profile, &w, DEFAULT_W, ss); + err |= to_int("packetsize", profile, &packetsize, DEFAULT_PACKETSIZE, ss); + + bool error = false; + if (!check_k(ss)) + error = true; + if (!check_packetsize_set(ss)) + error = true; + if (error) { + revert_to_default(profile, ss); + err = -EINVAL; + } + return err; +} + +void ErasureCodeJerasureLiber8tion::prepare() +{ + bitmatrix = liber8tion_coding_bitmatrix(k); + schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix); +} diff --git a/src/erasure-code/jerasure/ErasureCodeJerasure.h b/src/erasure-code/jerasure/ErasureCodeJerasure.h new file mode 100644 index 00000000..0b5bfb1c --- /dev/null +++ b/src/erasure-code/jerasure/ErasureCodeJerasure.h @@ -0,0 +1,255 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013, 2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_JERASURE_H +#define CEPH_ERASURE_CODE_JERASURE_H + +#include "erasure-code/ErasureCode.h" + +class ErasureCodeJerasure : public ErasureCode { +public: + int k; + std::string DEFAULT_K; + int m; + std::string DEFAULT_M; + int w; + std::string DEFAULT_W; + const char *technique; + std::string rule_root; + std::string rule_failure_domain; + bool per_chunk_alignment; + + explicit ErasureCodeJerasure(const char *_technique) : + k(0), + DEFAULT_K("2"), + m(0), + DEFAULT_M("1"), + w(0), + DEFAULT_W("8"), + technique(_technique), + per_chunk_alignment(false) + {} + + ~ErasureCodeJerasure() override {} + + unsigned int get_chunk_count() const override { + return k + m; + } + + unsigned int get_data_chunk_count() const override { + return k; + } + + unsigned int get_chunk_size(unsigned int object_size) const override; + + int encode_chunks(const std::set &want_to_encode, + std::map *encoded) override; + + int decode_chunks(const std::set &want_to_read, + const std::map &chunks, + std::map *decoded) override; + + int init(ErasureCodeProfile &profile, std::ostream *ss) override; + + virtual void jerasure_encode(char **data, + char **coding, + int blocksize) = 0; + virtual int jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) = 0; + virtual unsigned get_alignment() const = 0; + virtual void prepare() = 0; + static bool is_prime(int value); +protected: + virtual int parse(ErasureCodeProfile &profile, std::ostream *ss); +}; + +class ErasureCodeJerasureReedSolomonVandermonde : public ErasureCodeJerasure { +public: + int *matrix; + + ErasureCodeJerasureReedSolomonVandermonde() : + ErasureCodeJerasure("reed_sol_van"), + matrix(0) + { + DEFAULT_K = "7"; + DEFAULT_M = "3"; + DEFAULT_W = "8"; + } + ~ErasureCodeJerasureReedSolomonVandermonde() override { + if (matrix) + free(matrix); + } + + void jerasure_encode(char **data, + char **coding, + int blocksize) override; + int jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) override; + unsigned get_alignment() const override; + void prepare() override; +private: + int parse(ErasureCodeProfile &profile, std::ostream *ss) override; +}; + +class ErasureCodeJerasureReedSolomonRAID6 : public ErasureCodeJerasure { +public: + int *matrix; + + ErasureCodeJerasureReedSolomonRAID6() : + ErasureCodeJerasure("reed_sol_r6_op"), + matrix(0) + { + DEFAULT_K = "7"; + DEFAULT_W = "8"; + } + ~ErasureCodeJerasureReedSolomonRAID6() override { + if (matrix) + free(matrix); + } + + void jerasure_encode(char **data, + char **coding, + int blocksize) override; + int jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) override; + unsigned get_alignment() const override; + void prepare() override; +private: + int parse(ErasureCodeProfile &profile, std::ostream *ss) override; +}; + +#define DEFAULT_PACKETSIZE "2048" + +class ErasureCodeJerasureCauchy : public ErasureCodeJerasure { +public: + int *bitmatrix; + int **schedule; + int packetsize; + + explicit ErasureCodeJerasureCauchy(const char *technique) : + ErasureCodeJerasure(technique), + bitmatrix(0), + schedule(0), + packetsize(0) + { + DEFAULT_K = "7"; + DEFAULT_M = "3"; + DEFAULT_W = "8"; + } + ~ErasureCodeJerasureCauchy() override; + + void jerasure_encode(char **data, + char **coding, + int blocksize) override; + int jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) override; + unsigned get_alignment() const override; + void prepare_schedule(int *matrix); +private: + int parse(ErasureCodeProfile &profile, std::ostream *ss) override; +}; + +class ErasureCodeJerasureCauchyOrig : public ErasureCodeJerasureCauchy { +public: + ErasureCodeJerasureCauchyOrig() : + ErasureCodeJerasureCauchy("cauchy_orig") + {} + + void prepare() override; +}; + +class ErasureCodeJerasureCauchyGood : public ErasureCodeJerasureCauchy { +public: + ErasureCodeJerasureCauchyGood() : + ErasureCodeJerasureCauchy("cauchy_good") + {} + + void prepare() override; +}; + +class ErasureCodeJerasureLiberation : public ErasureCodeJerasure { +public: + int *bitmatrix; + int **schedule; + int packetsize; + + explicit ErasureCodeJerasureLiberation(const char *technique = "liberation") : + ErasureCodeJerasure(technique), + bitmatrix(0), + schedule(0), + packetsize(0) + { + DEFAULT_K = "2"; + DEFAULT_M = "2"; + DEFAULT_W = "7"; + } + ~ErasureCodeJerasureLiberation() override; + + void jerasure_encode(char **data, + char **coding, + int blocksize) override; + int jerasure_decode(int *erasures, + char **data, + char **coding, + int blocksize) override; + unsigned get_alignment() const override; + virtual bool check_k(std::ostream *ss) const; + virtual bool check_w(std::ostream *ss) const; + virtual bool check_packetsize_set(std::ostream *ss) const; + virtual bool check_packetsize(std::ostream *ss) const; + virtual int revert_to_default(ErasureCodeProfile &profile, + std::ostream *ss); + void prepare() override; +private: + int parse(ErasureCodeProfile &profile, std::ostream *ss) override; +}; + +class ErasureCodeJerasureBlaumRoth : public ErasureCodeJerasureLiberation { +public: + ErasureCodeJerasureBlaumRoth() : + ErasureCodeJerasureLiberation("blaum_roth") + { + } + + bool check_w(std::ostream *ss) const override; + void prepare() override; +}; + +class ErasureCodeJerasureLiber8tion : public ErasureCodeJerasureLiberation { +public: + ErasureCodeJerasureLiber8tion() : + ErasureCodeJerasureLiberation("liber8tion") + { + DEFAULT_K = "2"; + DEFAULT_M = "2"; + DEFAULT_W = "8"; + } + + void prepare() override; +private: + int parse(ErasureCodeProfile &profile, std::ostream *ss) override; +}; + +#endif diff --git a/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc b/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc new file mode 100644 index 00000000..353b71b8 --- /dev/null +++ b/src/erasure-code/jerasure/ErasureCodePluginJerasure.cc @@ -0,0 +1,84 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2013,2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#include "ceph_ver.h" +#include "common/debug.h" +#include "ErasureCodeJerasure.h" +#include "ErasureCodePluginJerasure.h" +#include "jerasure_init.h" + +#define dout_context g_ceph_context +#define dout_subsys ceph_subsys_osd +#undef dout_prefix +#define dout_prefix _prefix(_dout) + +static ostream& _prefix(std::ostream* _dout) +{ + return *_dout << "ErasureCodePluginJerasure: "; +} + +int ErasureCodePluginJerasure::factory(const std::string& directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + std::ostream *ss) { + ErasureCodeJerasure *interface; + std::string t; + if (profile.find("technique") != profile.end()) + t = profile.find("technique")->second; + if (t == "reed_sol_van") { + interface = new ErasureCodeJerasureReedSolomonVandermonde(); + } else if (t == "reed_sol_r6_op") { + interface = new ErasureCodeJerasureReedSolomonRAID6(); + } else if (t == "cauchy_orig") { + interface = new ErasureCodeJerasureCauchyOrig(); + } else if (t == "cauchy_good") { + interface = new ErasureCodeJerasureCauchyGood(); + } else if (t == "liberation") { + interface = new ErasureCodeJerasureLiberation(); + } else if (t == "blaum_roth") { + interface = new ErasureCodeJerasureBlaumRoth(); + } else if (t == "liber8tion") { + interface = new ErasureCodeJerasureLiber8tion(); + } else { + *ss << "technique=" << t << " is not a valid coding technique. " + << " Choose one of the following: " + << "reed_sol_van, reed_sol_r6_op, cauchy_orig, " + << "cauchy_good, liberation, blaum_roth, liber8tion"; + return -ENOENT; + } + dout(20) << __func__ << ": " << profile << dendl; + int r = interface->init(profile, ss); + if (r) { + delete interface; + return r; + } + *erasure_code = ErasureCodeInterfaceRef(interface); + return 0; +} + +const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; } + +int __erasure_code_init(char *plugin_name, char *directory) +{ + ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance(); + int w[] = { 4, 8, 16, 32 }; + int r = jerasure_init(4, w); + if (r) { + return -r; + } + return instance.add(plugin_name, new ErasureCodePluginJerasure()); +} diff --git a/src/erasure-code/jerasure/ErasureCodePluginJerasure.h b/src/erasure-code/jerasure/ErasureCodePluginJerasure.h new file mode 100644 index 00000000..9b5dc2f4 --- /dev/null +++ b/src/erasure-code/jerasure/ErasureCodePluginJerasure.h @@ -0,0 +1,31 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph distributed storage system + * + * Copyright (C) 2014 Cloudwatt + * Copyright (C) 2014 Red Hat + * + * Author: Loic Dachary + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_PLUGIN_JERASURE_H +#define CEPH_ERASURE_CODE_PLUGIN_JERASURE_H + +#include "erasure-code/ErasureCodePlugin.h" + +class ErasureCodePluginJerasure : public ErasureCodePlugin { +public: + int factory(const std::string& directory, + ErasureCodeProfile &profile, + ErasureCodeInterfaceRef *erasure_code, + ostream *ss) override; +}; + +#endif diff --git a/src/erasure-code/jerasure/gf-complete/.gitignore b/src/erasure-code/jerasure/gf-complete/.gitignore new file mode 100644 index 00000000..bfc1dfc1 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/.gitignore @@ -0,0 +1,78 @@ +Makefile +Makefile.in +/autom4te.cache +/aclocal.m4 +/compile +/configure +/depcomp +/install-sh +/missing +include/config.h +include/config.h.in +include/config.h.in~ +include/stamp-h1 + +# Object files +*.o +*.ko +*.obj +*.elf + +# Libraries +*.lib +*.la +*.a + +# Shared objects (inc. Windows DLLs) +*.dll +*.lo +*.so +*.so.* +*.dylib + +# Executables +*.exe +*.out +*.app +*.i*86 +*.x86_64 +*.hex + +# Other stuff +.deps/ +.libs/ +/config.log +/config.status +/libtool +INSTALL +config.guess +config.sub +ltmain.sh +m4/libtool.m4 +m4/ltversion.m4 +m4/ltoptions.m4 +m4/ltsugar.m4 +m4/lt~obsolete.m4 +test-driver +src/.dirstamp +test-driver + +examples/gf_example_1 +examples/gf_example_2 +examples/gf_example_3 +examples/gf_example_4 +examples/gf_example_5 +examples/gf_example_6 +examples/gf_example_7 +test/gf_unit +tools/gf_add +tools/gf_div +tools/gf_inline_time +tools/gf_methods +tools/gf_mult +tools/gf_poly +tools/gf_time +tools/gf_unit_w* +tools/test-suite.log +tools/.qemu/ +tools/test_simd*.results* diff --git a/src/erasure-code/jerasure/gf-complete/AUTHORS b/src/erasure-code/jerasure/gf-complete/AUTHORS new file mode 100644 index 00000000..e69de29b diff --git a/src/erasure-code/jerasure/gf-complete/COPYING b/src/erasure-code/jerasure/gf-complete/COPYING new file mode 100644 index 00000000..df8d9ed3 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/COPYING @@ -0,0 +1,32 @@ +Copyright (c) 2013, James S. Plank, Ethan L. Miller, Kevin M. Greenan, +Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of the University of Tennessee nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY +WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. diff --git a/src/erasure-code/jerasure/gf-complete/ChangeLog b/src/erasure-code/jerasure/gf-complete/ChangeLog new file mode 100644 index 00000000..e69de29b diff --git a/src/erasure-code/jerasure/gf-complete/License.txt b/src/erasure-code/jerasure/gf-complete/License.txt new file mode 100644 index 00000000..df8d9ed3 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/License.txt @@ -0,0 +1,32 @@ +Copyright (c) 2013, James S. Plank, Ethan L. Miller, Kevin M. Greenan, +Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of the University of Tennessee nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY +WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. diff --git a/src/erasure-code/jerasure/gf-complete/Makefile.am b/src/erasure-code/jerasure/gf-complete/Makefile.am new file mode 100644 index 00000000..cfb293a1 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/Makefile.am @@ -0,0 +1,10 @@ +# Top-level GF-Complete AM file +# Distributes headers + +SUBDIRS = src tools test examples +ACLOCAL_AMFLAGS = -I m4 + +include_HEADERS = include/gf_complete.h include/gf_method.h include/gf_rand.h include/gf_general.h + +# display the output of failed TESTS after a failed make check +export VERBOSE = true diff --git a/src/erasure-code/jerasure/gf-complete/NEWS b/src/erasure-code/jerasure/gf-complete/NEWS new file mode 100644 index 00000000..e69de29b diff --git a/src/erasure-code/jerasure/gf-complete/README b/src/erasure-code/jerasure/gf-complete/README new file mode 100644 index 00000000..7fd2f049 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/README @@ -0,0 +1,21 @@ +This is GF-Complete, Revision 1.03. January 1, 2015. + +Authors: James S. Plank (University of Tennessee) + Ethan L. Miller (UC Santa Cruz) + Kevin M. Greenan (Box) + Benjamin A. Arnold (University of Tennessee) + John A. Burnum (University of Tennessee) + Adam W. Disney (University of Tennessee, + Allen C. McBride (University of Tennessee) + +The user's manual is in the file Manual.pdf. + +The online home for GF-Complete is: + + - https://jerasure.org/jerasure/gf-complete + +To compile, do: + + ./configure + make + sudo make install diff --git a/src/erasure-code/jerasure/gf-complete/README.txt b/src/erasure-code/jerasure/gf-complete/README.txt new file mode 100644 index 00000000..cd2d66e1 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/README.txt @@ -0,0 +1,21 @@ +This is GF-Complete, Revision 1.03. January 1, 2015. + +Authors: James S. Plank (University of Tennessee) + Ethan L. Miller (UC Santa Cruz) + Kevin M. Greenan (Box) + Benjamin A. Arnold (University of Tennessee) + John A. Burnum (University of Tennessee) + Adam W. Disney (University of Tennessee, + Allen C. McBride (University of Tennessee) + +The user's manual is in the file Manual.pdf. + +The online home for GF-Complete is: + + - http://jerasure.org/jerasure/gf-complete + +To compile, do: + + ./configure + make + sudo make install diff --git a/src/erasure-code/jerasure/gf-complete/autogen.sh b/src/erasure-code/jerasure/gf-complete/autogen.sh new file mode 100755 index 00000000..b483139f --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/autogen.sh @@ -0,0 +1,2 @@ +#!/bin/sh +autoreconf --force --install -I m4 diff --git a/src/erasure-code/jerasure/gf-complete/configure.ac b/src/erasure-code/jerasure/gf-complete/configure.ac new file mode 100644 index 00000000..d696f6eb --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/configure.ac @@ -0,0 +1,87 @@ +# gf-complete autoconf template + +# FIXME - add project url as the last argument +AC_INIT(gf-complete, 1.0) + +# Override default CFLAGS +: ${CFLAGS="-Wall -Wpointer-arith -O3 -g"} + +AC_PREREQ([2.61]) + +AM_INIT_AUTOMAKE([no-dependencies foreign parallel-tests]) +LT_INIT # libtool + +AC_CONFIG_HEADER(include/config.h) + +dnl Needed when reconfiguring with 'autoreconf -i -s' +AC_CONFIG_MACRO_DIR([m4]) + +# This prevents './configure; make' from trying to run autotools. +AM_MAINTAINER_MODE([disable]) + +dnl Compiling with per-target flags requires AM_PROG_CC_C_O. +AC_PROG_CC + +# Check for functions to provide aligned memory +# +AC_CHECK_FUNCS([posix_memalign], + [found_memalign=yes; break]) + +AS_IF([test "x$found_memalign" != "xyes"], [AC_MSG_WARN([No function for aligned memory allocation found])]) + +AC_ARG_ENABLE([debug-functions], + AS_HELP_STRING([--enable-debug-func], [Enable debugging of functions selected])) +AS_IF([test "x$enable_debug_func" = "xyes"], [CPPFLAGS="$CPPFLAGS -DDEBUG_FUNCTIONS"]) + +AC_ARG_ENABLE([debug-cpu], + AS_HELP_STRING([--enable-debug-cpu], [Enable debugging of SIMD detection])) +AS_IF([test "x$enable_debug_cpu" = "xyes"], [CPPFLAGS="$CPPFLAGS -DDEBUG_CPU_DETECTION"]) + +AX_EXT() + +AC_ARG_ENABLE([neon], + AS_HELP_STRING([--disable-neon], [Build without NEON optimizations])) + +AS_IF([test "x$enable_neon" != "xno"], + [noneon_CPPFLAGS=$CPPFLAGS + CPPFLAGS="$CPPFLAGS $SIMD_FLAGS" + AC_CHECK_HEADER([arm_neon.h], + [have_neon=yes], + [have_neon=no + CPPFLAGS=$noneon_CPPFLAGS])], + [have_neon=no + AS_IF([test "x$ax_cv_have_neon_ext" = "xyes"], + [SIMD_FLAGS=""]) + ]) + +AS_IF([test "x$have_neon" = "xno"], + [AS_IF([test "x$enable_neon" = "xyes"], + [AC_MSG_ERROR([neon requested but arm_neon.h not found])]) + ]) +AM_CONDITIONAL([HAVE_NEON], [test "x$have_neon" = "xyes"]) + +AC_ARG_ENABLE([sse], + AS_HELP_STRING([--disable-sse], [Build without SSE optimizations]), + [if test "x$enableval" = "xno" ; then + SIMD_FLAGS="" + echo "DISABLED SSE!!!" + fi] +) + +AC_ARG_ENABLE([valgrind], + [AS_HELP_STRING([--enable-valgrind], [run tests with valgrind])], + [], + [enable_valgrind=no]) +AM_CONDITIONAL(ENABLE_VALGRIND, test "x$enable_valgrind" != xno) + +AC_ARG_ENABLE([avx], AS_HELP_STRING([--enable-avx], [Build with AVX optimizations])) +AX_CHECK_COMPILE_FLAG(-mavx, [ax_cv_support_avx=yes], []) + +AS_IF([test "x$enable_avx" = "xyes"], + [AS_IF([test "x$ax_cv_support_avx" = "xno"], + [AC_MSG_ERROR([AVX requested but compiler does not support -mavx])], + [SIMD_FLAGS="$SIMD_FLAGS -mavx"]) + ]) + +AC_CONFIG_FILES([Makefile src/Makefile tools/Makefile test/Makefile examples/Makefile]) +AC_OUTPUT diff --git a/src/erasure-code/jerasure/gf-complete/examples/Makefile.am b/src/erasure-code/jerasure/gf-complete/examples/Makefile.am new file mode 100644 index 00000000..a420bda8 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/Makefile.am @@ -0,0 +1,37 @@ +# GF-Complete 'examples' AM file + +AM_CPPFLAGS = -I$(top_builddir)/include -I$(top_srcdir)/include +AM_CFLAGS = -O3 $(SIMD_FLAGS) -fPIC + +bin_PROGRAMS = gf_example_1 gf_example_2 gf_example_3 gf_example_4 \ + gf_example_5 gf_example_6 gf_example_7 + +gf_example_1_SOURCES = gf_example_1.c +#gf_example_1_LDFLAGS = -lgf_complete +gf_example_1_LDADD = ../src/libgf_complete.la + +gf_example_2_SOURCES = gf_example_2.c +#gf_example_2_LDFLAGS = -lgf_complete +gf_example_2_LDADD = ../src/libgf_complete.la + +gf_example_3_SOURCES = gf_example_3.c +#gf_example_3_LDFLAGS = -lgf_complete +gf_example_3_LDADD = ../src/libgf_complete.la + +gf_example_4_SOURCES = gf_example_4.c +#gf_example_4_LDFLAGS = -lgf_complete +gf_example_4_LDADD = ../src/libgf_complete.la + +gf_example_5_SOURCES = gf_example_5.c +#gf_example_5_LDFLAGS = -lgf_complete +gf_example_5_LDADD = ../src/libgf_complete.la + +gf_example_6_SOURCES = gf_example_6.c +#gf_example_6_LDFLAGS = -lgf_complete +gf_example_6_LDADD = ../src/libgf_complete.la + +gf_example_7_SOURCES = gf_example_7.c +#gf_example_7_LDFLAGS = -lgf_complete +gf_example_7_LDADD = ../src/libgf_complete.la + + diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_1.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_1.c new file mode 100644 index 00000000..a7a41559 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_1.c @@ -0,0 +1,58 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_1.c + * + * Demonstrates using the procedures for examples in GF(2^w) for w <= 32. + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_1 w - w must be between 1 and 32\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint32_t a, b, c; + int w; + gf_t gf; + + if (argc != 2) usage(NULL); + w = atoi(argv[1]); + if (w <= 0 || w > 32) usage("Bad w"); + + /* Get two random numbers in a and b */ + + MOA_Seed(time(0)); + a = MOA_Random_W(w, 0); + b = MOA_Random_W(w, 0); + + /* Create the proper instance of the gf_t object using defaults: */ + + gf_init_easy(&gf, w); + + /* And multiply a and b using the galois field: */ + + c = gf.multiply.w32(&gf, a, b); + printf("%u * %u = %u\n", a, b, c); + + /* Divide the product by a and b */ + + printf("%u / %u = %u\n", c, a, gf.divide.w32(&gf, c, a)); + printf("%u / %u = %u\n", c, b, gf.divide.w32(&gf, c, b)); + + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_2.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_2.c new file mode 100644 index 00000000..576d9a53 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_2.c @@ -0,0 +1,107 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_2.c + * + * Demonstrates using the procedures for examples in GF(2^w) for w <= 32. + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_2 w - w must be between 1 and 32\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint32_t a, b, c; + uint8_t *r1, *r2; + uint16_t *r16 = NULL; + uint32_t *r32 = NULL; + int w, i; + gf_t gf; + + if (argc != 2) usage(NULL); + w = atoi(argv[1]); + if (w <= 0 || w > 32) usage("Bad w"); + + /* Get two random numbers in a and b */ + + MOA_Seed(time(0)); + a = MOA_Random_W(w, 0); + b = MOA_Random_W(w, 0); + + /* Create the proper instance of the gf_t object using defaults: */ + + gf_init_easy(&gf, w); + + /* And multiply a and b using the galois field: */ + + c = gf.multiply.w32(&gf, a, b); + printf("%u * %u = %u\n", a, b, c); + + /* Divide the product by a and b */ + + printf("%u / %u = %u\n", c, a, gf.divide.w32(&gf, c, a)); + printf("%u / %u = %u\n", c, b, gf.divide.w32(&gf, c, b)); + + /* If w is 4, 8, 16 or 32, do a very small region operation */ + + if (w == 4 || w == 8 || w == 16 || w == 32) { + r1 = (uint8_t *) malloc(16); + r2 = (uint8_t *) malloc(16); + + if (w == 4 || w == 8) { + r1[0] = b; + for (i = 1; i < 16; i++) r1[i] = MOA_Random_W(8, 1); + } else if (w == 16) { + r16 = (uint16_t *) r1; + r16[0] = b; + for (i = 1; i < 8; i++) r16[i] = MOA_Random_W(16, 1); + } else { + r32 = (uint32_t *) r1; + r32[0] = b; + for (i = 1; i < 4; i++) r32[i] = MOA_Random_W(32, 1); + } + + gf.multiply_region.w32(&gf, r1, r2, a, 16, 0); + + printf("\nmultiply_region by 0x%x (%u)\n\n", a, a); + printf("R1 (the source): "); + if (w == 4) { + for (i = 0; i < 16; i++) printf(" %x %x", r1[i] >> 4, r1[i] & 0xf); + } else if (w == 8) { + for (i = 0; i < 16; i++) printf(" %02x", r1[i]); + } else if (w == 16) { + for (i = 0; i < 8; i++) printf(" %04x", r16[i]); + } else if (w == 32) { + for (i = 0; i < 4; i++) printf(" %08x", r32[i]); + } + printf("\nR2 (the product): "); + if (w == 4) { + for (i = 0; i < 16; i++) printf(" %x %x", r2[i] >> 4, r2[i] & 0xf); + } else if (w == 8) { + for (i = 0; i < 16; i++) printf(" %02x", r2[i]); + } else if (w == 16) { + r16 = (uint16_t *) r2; + for (i = 0; i < 8; i++) printf(" %04x", r16[i]); + } else if (w == 32) { + r32 = (uint32_t *) r2; + for (i = 0; i < 4; i++) printf(" %08x", r32[i]); + } + printf("\n"); + } + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_3.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_3.c new file mode 100644 index 00000000..d6fef879 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_3.c @@ -0,0 +1,74 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_3.c + * + * Identical to example_2 except it works in GF(2^64) + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_3\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint64_t a, b, c; + uint64_t *r1, *r2; + int i; + gf_t gf; + + if (argc != 1) usage(NULL); + + /* Get two random numbers in a and b */ + + MOA_Seed(time(0)); + a = MOA_Random_64(); + b = MOA_Random_64(); + + /* Create the proper instance of the gf_t object using defaults: */ + + gf_init_easy(&gf, 64); + + /* And multiply a and b using the galois field: */ + + c = gf.multiply.w64(&gf, a, b); + printf("%llx * %llx = %llx\n", (long long unsigned int) a, (long long unsigned int) b, (long long unsigned int) c); + + /* Divide the product by a and b */ + + printf("%llx / %llx = %llx\n", (long long unsigned int) c, (long long unsigned int) a, (long long unsigned int) gf.divide.w64(&gf, c, a)); + printf("%llx / %llx = %llx\n", (long long unsigned int) c, (long long unsigned int) b, (long long unsigned int) gf.divide.w64(&gf, c, b)); + + r1 = (uint64_t *) malloc(32); + r2 = (uint64_t *) malloc(32); + + r1[0] = b; + + for (i = 1; i < 4; i++) r1[i] = MOA_Random_64(); + + gf.multiply_region.w64(&gf, r1, r2, a, 32, 0); + + printf("\nmultiply_region by %llx\n\n", (long long unsigned int) a); + printf("R1 (the source): "); + for (i = 0; i < 4; i++) printf(" %016llx", (long long unsigned int) r1[i]); + + printf("\nR2 (the product): "); + for (i = 0; i < 4; i++) printf(" %016llx", (long long unsigned int) r2[i]); + printf("\n"); + + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_4.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_4.c new file mode 100644 index 00000000..17529b5b --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_4.c @@ -0,0 +1,69 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_4.c + * + * Identical to example_3 except it works in GF(2^128) + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +#define LLUI (long long unsigned int) + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_3\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint64_t a[2], b[2], c[2]; + uint64_t *r1, *r2; + int i; + gf_t gf; + + if (argc != 1) usage(NULL); + + /* Get two random numbers in a and b */ + + MOA_Seed(time(0)); + MOA_Random_128(a); + MOA_Random_128(b); + + /* Create the proper instance of the gf_t object using defaults: */ + + gf_init_easy(&gf, 128); + + /* And multiply a and b using the galois field: */ + + gf.multiply.w128(&gf, a, b, c); + printf("%016llx%016llx * %016llx%016llx =\n%016llx%016llx\n", + LLUI a[0], LLUI a[1], LLUI b[0], LLUI b[1], LLUI c[0], LLUI c[1]); + + r1 = (uint64_t *) malloc(32); + r2 = (uint64_t *) malloc(32); + + for (i = 0; i < 4; i++) r1[i] = MOA_Random_64(); + + gf.multiply_region.w128(&gf, r1, r2, a, 32, 0); + + printf("\nmultiply_region by %016llx%016llx\n\n", LLUI a[0], LLUI a[1]); + printf("R1 (the source): "); + for (i = 0; i < 4; i += 2) printf(" %016llx%016llx", LLUI r1[i], LLUI r1[i+1]); + + printf("\nR2 (the product): "); + for (i = 0; i < 4; i += 2) printf(" %016llx%016llx", LLUI r2[i], LLUI r2[i+1]); + printf("\n"); + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_5.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_5.c new file mode 100644 index 00000000..da6e9ca6 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_5.c @@ -0,0 +1,78 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_5.c + * + * Demonstrating altmap and extract_word + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_5\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint16_t *a, *b; + int i, j; + gf_t gf; + + if (gf_init_hard(&gf, 16, GF_MULT_SPLIT_TABLE, GF_REGION_ALTMAP, GF_DIVIDE_DEFAULT, + 0, 16, 4, NULL, NULL) == 0) { + fprintf(stderr, "gf_init_hard failed\n"); + exit(1); + } + + a = (uint16_t *) malloc(200); + b = (uint16_t *) malloc(200); + + a += 6; + b += 6; + + MOA_Seed(0); + + for (i = 0; i < 30; i++) a[i] = MOA_Random_W(16, 1); + + gf.multiply_region.w32(&gf, a, b, 0x1234, 30*2, 0); + + printf("a: 0x%lx b: 0x%lx\n", (unsigned long) a, (unsigned long) b); + + for (i = 0; i < 30; i += 10) { + printf("\n"); + printf(" "); + for (j = 0; j < 10; j++) printf(" %4d", i+j); + printf("\n"); + + printf("a:"); + for (j = 0; j < 10; j++) printf(" %04x", a[i+j]); + printf("\n"); + + printf("b:"); + for (j = 0; j < 10; j++) printf(" %04x", b[i+j]); + printf("\n"); + printf("\n"); + } + + for (i = 0; i < 15; i ++) { + printf("Word %2d: 0x%04x * 0x1234 = 0x%04x ", i, + gf.extract_word.w32(&gf, a, 30*2, i), + gf.extract_word.w32(&gf, b, 30*2, i)); + printf("Word %2d: 0x%04x * 0x1234 = 0x%04x\n", i+15, + gf.extract_word.w32(&gf, a, 30*2, i+15), + gf.extract_word.w32(&gf, b, 30*2, i+15)); + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_6.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_6.c new file mode 100644 index 00000000..800a35ff --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_6.c @@ -0,0 +1,84 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_6.c + * + * Demonstrating altmap and extract_word + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_6\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint32_t *a, *b; + int i, j; + gf_t gf, gf_16; + + if (gf_init_hard(&gf_16, 16, GF_MULT_LOG_TABLE, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT, + 0, 0, 0, NULL, NULL) == 0) { + fprintf(stderr, "gf_init_hard (6) failed\n"); + exit(1); + } + + if (gf_init_hard(&gf, 32, GF_MULT_COMPOSITE, GF_REGION_ALTMAP, GF_DIVIDE_DEFAULT, + 0, 2, 0, &gf_16, NULL) == 0) { + fprintf(stderr, "gf_init_hard (32) failed\n"); + exit(1); + } + + a = (uint32_t *) malloc(200); + b = (uint32_t *) malloc(200); + + a += 3; + b += 3; + + MOA_Seed(0); + + for (i = 0; i < 30; i++) a[i] = MOA_Random_W(32, 1); + + gf.multiply_region.w32(&gf, a, b, 0x12345678, 30*4, 0); + + printf("a: 0x%lx b: 0x%lx\n", (unsigned long) a, (unsigned long) b); + + for (i = 0; i < 30; i += 10) { + printf("\n"); + printf(" "); + for (j = 0; j < 10; j++) printf(" %8d", i+j); + printf("\n"); + + printf("a:"); + for (j = 0; j < 10; j++) printf(" %08x", a[i+j]); + printf("\n"); + + printf("b:"); + for (j = 0; j < 10; j++) printf(" %08x", b[i+j]); + printf("\n"); + printf("\n"); + } + + for (i = 0; i < 15; i ++) { + printf("Word %2d: 0x%08x * 0x12345678 = 0x%08x ", i, + gf.extract_word.w32(&gf, a, 30*4, i), + gf.extract_word.w32(&gf, b, 30*4, i)); + printf("Word %2d: 0x%08x * 0x12345678 = 0x%08x\n", i+15, + gf.extract_word.w32(&gf, a, 30*4, i+15), + gf.extract_word.w32(&gf, b, 30*4, i+15)); + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/examples/gf_example_7.c b/src/erasure-code/jerasure/gf-complete/examples/gf_example_7.c new file mode 100644 index 00000000..ee07d535 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/examples/gf_example_7.c @@ -0,0 +1,75 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_example_7.c + * + * Demonstrating extract_word and Cauchy + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_example_7\n"); + exit(1); +} + +int main(int argc, char **argv) +{ + uint8_t *a, *b; + int i, j; + gf_t gf; + + if (gf_init_hard(&gf, 3, GF_MULT_TABLE, GF_REGION_CAUCHY, GF_DIVIDE_DEFAULT, 0, 0, 0, NULL, NULL) == 0) { + fprintf(stderr, "gf_init_hard failed\n"); + exit(1); + } + + a = (uint8_t *) malloc(3); + b = (uint8_t *) malloc(3); + + MOA_Seed(0); + + for (i = 0; i < 3; i++) a[i] = MOA_Random_W(8, 1); + + gf.multiply_region.w32(&gf, a, b, 5, 3, 0); + + printf("a: 0x%lx b: 0x%lx\n", (unsigned long) a, (unsigned long) b); + + printf("\n"); + printf("a: 0x%02x 0x%02x 0x%02x\n", a[0], a[1], a[2]); + printf("b: 0x%02x 0x%02x 0x%02x\n", b[0], b[1], b[2]); + printf("\n"); + + printf("a bits:"); + for (i = 0; i < 3; i++) { + printf(" "); + for (j = 7; j >= 0; j--) printf("%c", (a[i] & (1 << j)) ? '1' : '0'); + } + printf("\n"); + + printf("b bits:"); + for (i = 0; i < 3; i++) { + printf(" "); + for (j = 7; j >= 0; j--) printf("%c", (b[i] & (1 << j)) ? '1' : '0'); + } + printf("\n"); + + printf("\n"); + for (i = 0; i < 8; i++) { + printf("Word %2d: %d * 5 = %d\n", i, + gf.extract_word.w32(&gf, a, 3, i), + gf.extract_word.w32(&gf, b, 3, i)); + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_complete.h b/src/erasure-code/jerasure/gf-complete/include/gf_complete.h new file mode 100644 index 00000000..c4783e80 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_complete.h @@ -0,0 +1,204 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_complete.h + * + * The main include file for gf_complete. + */ + +#ifndef _GF_COMPLETE_H_ +#define _GF_COMPLETE_H_ +#include + +#ifdef INTEL_SSE4 + #ifdef __SSE4_2__ + #include + #endif + #ifdef __SSE4_1__ + #include + #endif +#endif + +#ifdef INTEL_SSSE3 + #include +#endif + +#ifdef INTEL_SSE2 + #include +#endif + +#ifdef INTEL_SSE4_PCLMUL + #include +#endif + +#if defined(ARM_NEON) + #include +#endif + + +/* These are the different ways to perform multiplication. + Not all are implemented for all values of w. + See the paper for an explanation of how they work. */ + +typedef enum {GF_MULT_DEFAULT, + GF_MULT_SHIFT, + GF_MULT_CARRY_FREE, + GF_MULT_CARRY_FREE_GK, + GF_MULT_GROUP, + GF_MULT_BYTWO_p, + GF_MULT_BYTWO_b, + GF_MULT_TABLE, + GF_MULT_LOG_TABLE, + GF_MULT_LOG_ZERO, + GF_MULT_LOG_ZERO_EXT, + GF_MULT_SPLIT_TABLE, + GF_MULT_COMPOSITE } gf_mult_type_t; + +/* These are the different ways to optimize region + operations. They are bits because you can compose them. + Certain optimizations only apply to certain gf_mult_type_t's. + Again, please see documentation for how to use these */ + +#define GF_REGION_DEFAULT (0x0) +#define GF_REGION_DOUBLE_TABLE (0x1) +#define GF_REGION_QUAD_TABLE (0x2) +#define GF_REGION_LAZY (0x4) +#define GF_REGION_SIMD (0x8) +#define GF_REGION_SSE (0x8) +#define GF_REGION_NOSIMD (0x10) +#define GF_REGION_NOSSE (0x10) +#define GF_REGION_ALTMAP (0x20) +#define GF_REGION_CAUCHY (0x40) + +typedef uint32_t gf_region_type_t; + +/* These are different ways to implement division. + Once again, it's best to use "DEFAULT". However, + there are times when you may want to experiment + with the others. */ + +typedef enum { GF_DIVIDE_DEFAULT, + GF_DIVIDE_MATRIX, + GF_DIVIDE_EUCLID } gf_division_type_t; + +/* We support w=4,8,16,32,64 and 128 with their own data types and + operations for multiplication, division, etc. We also support + a "gen" type so that you can do general gf arithmetic for any + value of w from 1 to 32. You can perform a "region" operation + on these if you use "CAUCHY" as the mapping. + */ + +typedef uint32_t gf_val_32_t; +typedef uint64_t gf_val_64_t; +typedef uint64_t *gf_val_128_t; + +extern int _gf_errno; +extern void gf_error(); + +typedef struct gf *GFP; + +typedef union gf_func_a_b { + gf_val_32_t (*w32) (GFP gf, gf_val_32_t a, gf_val_32_t b); + gf_val_64_t (*w64) (GFP gf, gf_val_64_t a, gf_val_64_t b); + void (*w128)(GFP gf, gf_val_128_t a, gf_val_128_t b, gf_val_128_t c); +} gf_func_a_b; + +typedef union { + gf_val_32_t (*w32) (GFP gf, gf_val_32_t a); + gf_val_64_t (*w64) (GFP gf, gf_val_64_t a); + void (*w128)(GFP gf, gf_val_128_t a, gf_val_128_t b); +} gf_func_a; + +typedef union { + void (*w32) (GFP gf, void *src, void *dest, gf_val_32_t val, int bytes, int add); + void (*w64) (GFP gf, void *src, void *dest, gf_val_64_t val, int bytes, int add); + void (*w128)(GFP gf, void *src, void *dest, gf_val_128_t val, int bytes, int add); +} gf_region; + +typedef union { + gf_val_32_t (*w32) (GFP gf, void *start, int bytes, int index); + gf_val_64_t (*w64) (GFP gf, void *start, int bytes, int index); + void (*w128)(GFP gf, void *start, int bytes, int index, gf_val_128_t rv); +} gf_extract; + +typedef struct gf { + gf_func_a_b multiply; + gf_func_a_b divide; + gf_func_a inverse; + gf_region multiply_region; + gf_extract extract_word; + void *scratch; +} gf_t; + +/* Initializes the GF to defaults. Pass it a pointer to a gf_t. + Returns 0 on failure, 1 on success. */ + +extern int gf_init_easy(GFP gf, int w); + +/* Initializes the GF changing the defaults. + Returns 0 on failure, 1 on success. + Pass it a pointer to a gf_t. + For mult_type and divide_type, use one of gf_mult_type_t gf_divide_type_t . + For region_type, OR together the GF_REGION_xxx's defined above. + Use 0 as prim_poly for defaults. Otherwise, the leading 1 is optional. + Use NULL for scratch_memory to have init_hard allocate memory. Otherwise, + use gf_scratch_size() to determine how big scratch_memory has to be. + */ + +extern int gf_init_hard(GFP gf, + int w, + int mult_type, + int region_type, + int divide_type, + uint64_t prim_poly, + int arg1, + int arg2, + GFP base_gf, + void *scratch_memory); + +/* Determines the size for scratch_memory. + Returns 0 on failure and non-zero on success. */ + +extern int gf_scratch_size(int w, + int mult_type, + int region_type, + int divide_type, + int arg1, + int arg2); + +/* This reports the gf_scratch_size of a gf_t that has already been created */ + +extern int gf_size(GFP gf); + +/* Frees scratch memory if gf_init_easy/gf_init_hard called malloc. + If recursive = 1, then it calls itself recursively on base_gf. */ + +extern int gf_free(GFP gf, int recursive); + +/* This is support for inline single multiplications and divisions. + I know it's yucky, but if you've got to be fast, you've got to be fast. + We support inlining for w=4, w=8 and w=16. + + To use inline multiplication and division with w=4 or 8, you should use the + default gf_t, or one with a single table. Otherwise, gf_w4/8_get_mult_table() + will return NULL. Similarly, with w=16, the gf_t must be LOG */ + +uint8_t *gf_w4_get_mult_table(GFP gf); +uint8_t *gf_w4_get_div_table(GFP gf); + +#define GF_W4_INLINE_MULTDIV(table, a, b) (table[((a)<<4)|(b)]) + +uint8_t *gf_w8_get_mult_table(GFP gf); +uint8_t *gf_w8_get_div_table(GFP gf); + +#define GF_W8_INLINE_MULTDIV(table, a, b) (table[(((uint32_t) (a))<<8)|(b)]) + +uint16_t *gf_w16_get_log_table(GFP gf); +uint16_t *gf_w16_get_mult_alog_table(GFP gf); +uint16_t *gf_w16_get_div_alog_table(GFP gf); + +#define GF_W16_INLINE_MULT(log, alog, a, b) ((a) == 0 || (b) == 0) ? 0 : (alog[(uint32_t)log[a]+(uint32_t)log[b]]) +#define GF_W16_INLINE_DIV(log, alog, a, b) ((a) == 0 || (b) == 0) ? 0 : (alog[(int)log[a]-(int)log[b]]) +#endif diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_cpu.h b/src/erasure-code/jerasure/gf-complete/include/gf_cpu.h new file mode 100644 index 00000000..71c72270 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_cpu.h @@ -0,0 +1,20 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_cpu.h + * + * Identifies whether the CPU supports SIMD instructions at runtime. + */ + +#pragma once + +extern int gf_cpu_supports_intel_pclmul; +extern int gf_cpu_supports_intel_sse4; +extern int gf_cpu_supports_intel_ssse3; +extern int gf_cpu_supports_intel_sse3; +extern int gf_cpu_supports_intel_sse2; +extern int gf_cpu_supports_arm_neon; + +void gf_cpu_identify(void); diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_general.h b/src/erasure-code/jerasure/gf-complete/include/gf_general.h new file mode 100644 index 00000000..9a5de529 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_general.h @@ -0,0 +1,61 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_general.h + * + * This file has helper routines for doing basic GF operations with any + * legal value of w. The problem is that w <= 32, w=64 and w=128 all have + * different data types, which is a pain. The procedures in this file try + * to alleviate that pain. They are used in gf_unit and gf_time. + */ + +#pragma once + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" + +typedef union { + uint32_t w32; + uint64_t w64; + uint64_t w128[2]; +} gf_general_t; + +void gf_general_set_zero(gf_general_t *v, int w); +void gf_general_set_one(gf_general_t *v, int w); +void gf_general_set_two(gf_general_t *v, int w); + +int gf_general_is_zero(gf_general_t *v, int w); +int gf_general_is_one(gf_general_t *v, int w); +int gf_general_are_equal(gf_general_t *v1, gf_general_t *v2, int w); + +void gf_general_val_to_s(gf_general_t *v, int w, char *s, int hex); +int gf_general_s_to_val(gf_general_t *v, int w, char *s, int hex); + +void gf_general_set_random(gf_general_t *v, int w, int zero_ok); + +void gf_general_add(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c); +void gf_general_multiply(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c); +void gf_general_divide(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c); +void gf_general_inverse(gf_t *gf, gf_general_t *a, gf_general_t *b); + +void gf_general_do_region_multiply(gf_t *gf, gf_general_t *a, + void *ra, void *rb, + int bytes, int xor); + +void gf_general_do_region_check(gf_t *gf, gf_general_t *a, + void *orig_a, void *orig_target, void *final_target, + int bytes, int xor); + + +/* Which is M, D or I for multiply, divide or inverse. */ + +void gf_general_set_up_single_timing_test(int w, void *ra, void *rb, int size); +int gf_general_do_single_timing_test(gf_t *gf, void *ra, void *rb, int size, char which); diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_int.h b/src/erasure-code/jerasure/gf-complete/include/gf_int.h new file mode 100644 index 00000000..0356920f --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_int.h @@ -0,0 +1,216 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_int.h + * + * Internal code for Galois field routines. This is not meant for + * users to include, but for the internal GF files to use. + */ + +#pragma once + +#include "gf_complete.h" + +#include + +extern void timer_start (double *t); +extern double timer_split (const double *t); +extern void galois_fill_random (void *buf, int len, unsigned int seed); + +typedef struct { + int mult_type; + int region_type; + int divide_type; + int w; + uint64_t prim_poly; + int free_me; + int arg1; + int arg2; + gf_t *base_gf; + void *private; +#ifdef DEBUG_FUNCTIONS + const char *multiply; + const char *divide; + const char *inverse; + const char *multiply_region; + const char *extract_word; +#endif +} gf_internal_t; + +#ifdef DEBUG_FUNCTIONS +#define SET_FUNCTION(gf,method,size,func) \ + { (gf)->method.size = (func); \ + ((gf_internal_t*)(gf)->scratch)->method = #func; } +#else +#define SET_FUNCTION(gf,method,size,func) \ + (gf)->method.size = (func); +#endif + +extern int gf_w4_init (gf_t *gf); +extern int gf_w4_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_w8_init (gf_t *gf); +extern int gf_w8_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_w16_init (gf_t *gf); +extern int gf_w16_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_w32_init (gf_t *gf); +extern int gf_w32_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_w64_init (gf_t *gf); +extern int gf_w64_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_w128_init (gf_t *gf); +extern int gf_w128_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2); + +extern int gf_wgen_init (gf_t *gf); +extern int gf_wgen_scratch_size(int w, int mult_type, int region_type, int divide_type, int arg1, int arg2); + +void gf_wgen_cauchy_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor); +gf_val_32_t gf_wgen_extract_word(gf_t *gf, void *start, int bytes, int index); + +extern void gf_alignment_error(char *s, int a); + +extern uint32_t gf_bitmatrix_inverse(uint32_t y, int w, uint32_t pp); + +/* This returns the correct default for prim_poly when base is used as the base + field for COMPOSITE. It returns 0 if we don't have a default prim_poly. */ + +extern uint64_t gf_composite_get_default_poly(gf_t *base); + +/* This structure lets you define a region multiply. It helps because you can handle + unaligned portions of the data with the procedures below, which really cleans + up the code. */ + +typedef struct { + gf_t *gf; + void *src; + void *dest; + int bytes; + uint64_t val; + int xor; + int align; /* The number of bytes to which to align. */ + void *s_start; /* The start and the top of the aligned region. */ + void *d_start; + void *s_top; + void *d_top; +} gf_region_data; + +/* This lets you set up one of these in one call. It also sets the start/top pointers. */ + +void gf_set_region_data(gf_region_data *rd, + gf_t *gf, + void *src, + void *dest, + int bytes, + uint64_t val, + int xor, + int align); + +/* This performs gf->multiply.32() on all of the unaligned bytes in the beginning of the region */ + +extern void gf_do_initial_region_alignment(gf_region_data *rd); + +/* This performs gf->multiply.32() on all of the unaligned bytes in the end of the region */ + +extern void gf_do_final_region_alignment(gf_region_data *rd); + +extern void gf_two_byte_region_table_multiply(gf_region_data *rd, uint16_t *base); + +extern void gf_multby_zero(void *dest, int bytes, int xor); +extern void gf_multby_one(void *src, void *dest, int bytes, int xor); + +typedef enum {GF_E_MDEFDIV, /* Dev != Default && Mult == Default */ + GF_E_MDEFREG, /* Reg != Default && Mult == Default */ + GF_E_MDEFARG, /* Args != Default && Mult == Default */ + GF_E_DIVCOMP, /* Mult == Composite && Div != Default */ + GF_E_CAUCOMP, /* Mult == Composite && Reg == CAUCHY */ + GF_E_DOUQUAD, /* Reg == DOUBLE && Reg == QUAD */ + GF_E_SIMD_NO, /* Reg == SIMD && Reg == NOSIMD */ + GF_E_CAUCHYB, /* Reg == CAUCHY && Other Reg */ + GF_E_CAUGT32, /* Reg == CAUCHY && w > 32*/ + GF_E_ARG1SET, /* Arg1 != 0 && Mult \notin COMPOSITE/SPLIT/GROUP */ + GF_E_ARG2SET, /* Arg2 != 0 && Mult \notin SPLIT/GROUP */ + GF_E_MATRIXW, /* Div == MATRIX && w > 32 */ + GF_E_BAD___W, /* Illegal w */ + GF_E_DOUBLET, /* Reg == DOUBLE && Mult != TABLE */ + GF_E_DOUBLEW, /* Reg == DOUBLE && w \notin {4,8} */ + GF_E_DOUBLEJ, /* Reg == DOUBLE && other Reg */ + GF_E_DOUBLEL, /* Reg == DOUBLE & LAZY but w = 4 */ + GF_E_QUAD__T, /* Reg == QUAD && Mult != TABLE */ + GF_E_QUAD__W, /* Reg == QUAD && w != 4 */ + GF_E_QUAD__J, /* Reg == QUAD && other Reg */ + GF_E_LAZY__X, /* Reg == LAZY && not DOUBLE or QUAD*/ + GF_E_ALTSHIF, /* Mult == Shift && Reg == ALTMAP */ + GF_E_SSESHIF, /* Mult == Shift && Reg == SIMD|NOSIMD */ + GF_E_ALT_CFM, /* Mult == CARRY_FREE && Reg == ALTMAP */ + GF_E_SSE_CFM, /* Mult == CARRY_FREE && Reg == SIMD|NOSIMD */ + GF_E_PCLMULX, /* Mult == Carry_Free && No PCLMUL */ + GF_E_ALT_BY2, /* Mult == Bytwo_x && Reg == ALTMAP */ + GF_E_BY2_SSE, /* Mult == Bytwo_x && Reg == SSE && No SSE2 */ + GF_E_LOGBADW, /* Mult == LOGx, w too big*/ + GF_E_LOG___J, /* Mult == LOGx, && Reg == SSE|ALTMAP|NOSSE */ + GF_E_ZERBADW, /* Mult == LOG_ZERO, w \notin {8,16} */ + GF_E_ZEXBADW, /* Mult == LOG_ZERO_EXT, w != 8 */ + GF_E_LOGPOLY, /* Mult == LOG & poly not primitive */ + GF_E_GR_ARGX, /* Mult == GROUP, Bad arg1/2 */ + GF_E_GR_W_48, /* Mult == GROUP, w \in { 4, 8 } */ + GF_E_GR_W_16, /* Mult == GROUP, w == 16, arg1 != 4 || arg2 != 4 */ + GF_E_GR_128A, /* Mult == GROUP, w == 128, bad args */ + GF_E_GR_A_27, /* Mult == GROUP, either arg > 27 */ + GF_E_GR_AR_W, /* Mult == GROUP, either arg > w */ + GF_E_GR____J, /* Mult == GROUP, Reg == SSE|ALTMAP|NOSSE */ + GF_E_TABLE_W, /* Mult == TABLE, w too big */ + GF_E_TAB_SSE, /* Mult == TABLE, SIMD|NOSIMD only apply to w == 4 */ + GF_E_TABSSE3, /* Mult == TABLE, Need SSSE3 for SSE */ + GF_E_TAB_ALT, /* Mult == TABLE, Reg == ALTMAP */ + GF_E_SP128AR, /* Mult == SPLIT, w=128, Bad arg1/arg2 */ + GF_E_SP128AL, /* Mult == SPLIT, w=128, SSE requires ALTMAP */ + GF_E_SP128AS, /* Mult == SPLIT, w=128, ALTMAP requires SSE */ + GF_E_SP128_A, /* Mult == SPLIT, w=128, ALTMAP only with 4/128 */ + GF_E_SP128_S, /* Mult == SPLIT, w=128, SSE only with 4/128 */ + GF_E_SPLIT_W, /* Mult == SPLIT, Bad w (8, 16, 32, 64, 128) */ + GF_E_SP_16AR, /* Mult == SPLIT, w=16, Bad arg1/arg2 */ + GF_E_SP_16_A, /* Mult == SPLIT, w=16, ALTMAP only with 4/16 */ + GF_E_SP_16_S, /* Mult == SPLIT, w=16, SSE only with 4/16 */ + GF_E_SP_32AR, /* Mult == SPLIT, w=32, Bad arg1/arg2 */ + GF_E_SP_32AS, /* Mult == SPLIT, w=32, ALTMAP requires SSE */ + GF_E_SP_32_A, /* Mult == SPLIT, w=32, ALTMAP only with 4/32 */ + GF_E_SP_32_S, /* Mult == SPLIT, w=32, SSE only with 4/32 */ + GF_E_SP_64AR, /* Mult == SPLIT, w=64, Bad arg1/arg2 */ + GF_E_SP_64AS, /* Mult == SPLIT, w=64, ALTMAP requires SSE */ + GF_E_SP_64_A, /* Mult == SPLIT, w=64, ALTMAP only with 4/64 */ + GF_E_SP_64_S, /* Mult == SPLIT, w=64, SSE only with 4/64 */ + GF_E_SP_8_AR, /* Mult == SPLIT, w=8, Bad arg1/arg2 */ + GF_E_SP_8__A, /* Mult == SPLIT, w=8, no ALTMAP */ + GF_E_SP_SSE3, /* Mult == SPLIT, Need SSSE3 for SSE */ + GF_E_COMP_A2, /* Mult == COMP, arg1 must be = 2 */ + GF_E_COMP_SS, /* Mult == COMP, SIMD|NOSIMD */ + GF_E_COMP__W, /* Mult == COMP, Bad w. */ + GF_E_UNKFLAG, /* Unknown flag in create_from.... */ + GF_E_UNKNOWN, /* Unknown mult_type. */ + GF_E_UNK_REG, /* Unknown region_type. */ + GF_E_UNK_DIV, /* Unknown divide_type. */ + GF_E_CFM___W, /* Mult == CFM, Bad w. */ + GF_E_CFM4POL, /* Mult == CFM & Prim Poly has high bits set. */ + GF_E_CFM8POL, /* Mult == CFM & Prim Poly has high bits set. */ + GF_E_CF16POL, /* Mult == CFM & Prim Poly has high bits set. */ + GF_E_CF32POL, /* Mult == CFM & Prim Poly has high bits set. */ + GF_E_CF64POL, /* Mult == CFM & Prim Poly has high bits set. */ + GF_E_FEWARGS, /* Too few args in argc/argv. */ + GF_E_BADPOLY, /* Bad primitive polynomial -- too many bits set. */ + GF_E_COMP_PP, /* Bad primitive polynomial -- bigger than sub-field. */ + GF_E_COMPXPP, /* Can't derive a default pp for composite field. */ + GF_E_BASE__W, /* Composite -- Base field is the wrong size. */ + GF_E_TWOMULT, /* In create_from... two -m's. */ + GF_E_TWO_DIV, /* In create_from... two -d's. */ + GF_E_POLYSPC, /* Bad numbera after -p. */ + GF_E_SPLITAR, /* Ran out of arguments in SPLIT */ + GF_E_SPLITNU, /* Arguments not integers in SPLIT. */ + GF_E_GROUPAR, /* Ran out of arguments in GROUP */ + GF_E_GROUPNU, /* Arguments not integers in GROUP. */ + GF_E_DEFAULT } gf_error_type_t; + diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_method.h b/src/erasure-code/jerasure/gf-complete/include/gf_method.h new file mode 100644 index 00000000..880b3496 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_method.h @@ -0,0 +1,20 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_method.h + * + * Parses argv to figure out the flags and arguments. Creates the gf. + */ + +#pragma once + +#include "gf_complete.h" + +/* Parses argv starting at "starting". + + Returns 0 on failure. + On success, it returns one past the last argument it read in argv. */ + +extern int create_gf_from_argv(gf_t *gf, int w, int argc, char **argv, int starting); diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_rand.h b/src/erasure-code/jerasure/gf-complete/include/gf_rand.h new file mode 100644 index 00000000..24294adc --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_rand.h @@ -0,0 +1,22 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_rand.h + * + * Random number generation, using the "Mother of All" random number generator. */ + +#pragma once +#include +#include +#include + +/* These are all pretty self-explanatory */ +uint32_t MOA_Random_32(); +uint64_t MOA_Random_64(); +void MOA_Random_128(uint64_t *x); +uint32_t MOA_Random_W(int w, int zero_ok); +void MOA_Fill_Random_Region (void *reg, int size); /* reg should be aligned to 4 bytes, but + size can be anything. */ +void MOA_Seed(uint32_t seed); diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_w16.h b/src/erasure-code/jerasure/gf-complete/include/gf_w16.h new file mode 100644 index 00000000..fb4c0e98 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_w16.h @@ -0,0 +1,66 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w16.h + * + * Defines and data structures for 16-bit Galois fields + */ + +#ifndef GF_COMPLETE_GF_W16_H +#define GF_COMPLETE_GF_W16_H + +#include + +#define GF_FIELD_WIDTH (16) +#define GF_FIELD_SIZE (1 << GF_FIELD_WIDTH) +#define GF_MULT_GROUP_SIZE GF_FIELD_SIZE-1 + +#define GF_BASE_FIELD_WIDTH (8) +#define GF_BASE_FIELD_SIZE (1 << GF_BASE_FIELD_WIDTH) + +struct gf_w16_logtable_data { + uint16_t log_tbl[GF_FIELD_SIZE]; + uint16_t antilog_tbl[GF_FIELD_SIZE * 2]; + uint16_t inv_tbl[GF_FIELD_SIZE]; + uint16_t *d_antilog; +}; + +struct gf_w16_zero_logtable_data { + int log_tbl[GF_FIELD_SIZE]; + uint16_t _antilog_tbl[GF_FIELD_SIZE * 4]; + uint16_t *antilog_tbl; + uint16_t inv_tbl[GF_FIELD_SIZE]; +}; + +struct gf_w16_lazytable_data { + uint16_t log_tbl[GF_FIELD_SIZE]; + uint16_t antilog_tbl[GF_FIELD_SIZE * 2]; + uint16_t inv_tbl[GF_FIELD_SIZE]; + uint16_t *d_antilog; + uint16_t lazytable[GF_FIELD_SIZE]; +}; + +struct gf_w16_bytwo_data { + uint64_t prim_poly; + uint64_t mask1; + uint64_t mask2; +}; + +struct gf_w16_split_8_8_data { + uint16_t tables[3][256][256]; +}; + +struct gf_w16_group_4_4_data { + uint16_t reduce[16]; + uint16_t shift[16]; +}; + +struct gf_w16_composite_data { + uint8_t *mult_table; +}; + +void gf_w16_neon_split_init(gf_t *gf); + +#endif /* GF_COMPLETE_GF_W16_H */ diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_w32.h b/src/erasure-code/jerasure/gf-complete/include/gf_w32.h new file mode 100644 index 00000000..7734f30f --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_w32.h @@ -0,0 +1,71 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w32.h + * + * Defines and data structures for 32-bit Galois fields + */ + +#ifndef GF_COMPLETE_GF_W32_H +#define GF_COMPLETE_GF_W32_H + +#include + +#define GF_FIELD_WIDTH (32) +#define GF_FIRST_BIT ((gf_val_32_t)1 << 31) + +#define GF_BASE_FIELD_WIDTH (16) +#define GF_BASE_FIELD_SIZE (1 << GF_BASE_FIELD_WIDTH) +#define GF_BASE_FIELD_GROUP_SIZE GF_BASE_FIELD_SIZE-1 +#define GF_MULTBY_TWO(p) (((p) & GF_FIRST_BIT) ? (((p) << 1) ^ h->prim_poly) : (p) << 1) + +struct gf_split_2_32_lazy_data { + uint32_t tables[16][4]; + uint32_t last_value; +}; + +struct gf_w32_split_8_8_data { + uint32_t tables[7][256][256]; + uint32_t region_tables[4][256]; + uint32_t last_value; +}; + +struct gf_w32_group_data { + uint32_t *reduce; + uint32_t *shift; + int tshift; + uint64_t rmask; + uint32_t *memory; +}; + +struct gf_split_16_32_lazy_data { + uint32_t tables[2][(1<<16)]; + uint32_t last_value; +}; + +struct gf_split_8_32_lazy_data { + uint32_t tables[4][256]; + uint32_t last_value; +}; + +struct gf_split_4_32_lazy_data { + uint32_t tables[8][16]; + uint32_t last_value; +}; + +struct gf_w32_bytwo_data { + uint64_t prim_poly; + uint64_t mask1; + uint64_t mask2; +}; + +struct gf_w32_composite_data { + uint16_t *log; + uint16_t *alog; +}; + +void gf_w32_neon_split_init(gf_t *gf); + +#endif /* GF_COMPLETE_GF_W32_H */ diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_w4.h b/src/erasure-code/jerasure/gf-complete/include/gf_w4.h new file mode 100644 index 00000000..8ee94a33 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_w4.h @@ -0,0 +1,63 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w4.h + * + * Defines and data structures for 4-bit Galois fields + */ + +#ifndef GF_COMPLETE_GF_W4_H +#define GF_COMPLETE_GF_W4_H + +#include + +#define GF_FIELD_WIDTH 4 +#define GF_DOUBLE_WIDTH (GF_FIELD_WIDTH*2) +#define GF_FIELD_SIZE (1 << GF_FIELD_WIDTH) +#define GF_MULT_GROUP_SIZE (GF_FIELD_SIZE-1) + +/* ------------------------------------------------------------ + JSP: Each implementation has its own data, which is allocated + at one time as part of the handle. For that reason, it + shouldn't be hierarchical -- i.e. one should be able to + allocate it with one call to malloc. */ + +struct gf_logtable_data { + uint8_t log_tbl[GF_FIELD_SIZE]; + uint8_t antilog_tbl[GF_FIELD_SIZE * 2]; + uint8_t *antilog_tbl_div; +}; + +struct gf_single_table_data { + uint8_t mult[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; +}; + +struct gf_double_table_data { + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t mult[GF_FIELD_SIZE][GF_FIELD_SIZE*GF_FIELD_SIZE]; +}; +struct gf_quad_table_data { + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint16_t mult[GF_FIELD_SIZE][(1<<16)]; +}; + +struct gf_quad_table_lazy_data { + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t smult[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint16_t mult[(1 << 16)]; +}; + +struct gf_bytwo_data { + uint64_t prim_poly; + uint64_t mask1; + uint64_t mask2; +}; + +// ARM NEON init functions +int gf_w4_neon_cfm_init(gf_t *gf); +void gf_w4_neon_single_table_init(gf_t *gf); + +#endif /* GF_COMPLETE_GF_W4_H */ diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_w64.h b/src/erasure-code/jerasure/gf-complete/include/gf_w64.h new file mode 100644 index 00000000..9a74a812 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_w64.h @@ -0,0 +1,50 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w64.h + * + * Defines and data structures for 64-bit Galois fields + */ + +#ifndef GF_COMPLETE_GF_W64_H +#define GF_COMPLETE_GF_W64_H + +#include + +#define GF_FIELD_WIDTH (64) +#define GF_FIRST_BIT (1ULL << 63) + +#define GF_BASE_FIELD_WIDTH (32) +#define GF_BASE_FIELD_SIZE (1ULL << GF_BASE_FIELD_WIDTH) +#define GF_BASE_FIELD_GROUP_SIZE GF_BASE_FIELD_SIZE-1 + +struct gf_w64_group_data { + uint64_t *reduce; + uint64_t *shift; + uint64_t *memory; +}; + +struct gf_split_4_64_lazy_data { + uint64_t tables[16][16]; + uint64_t last_value; +}; + +struct gf_split_8_64_lazy_data { + uint64_t tables[8][(1<<8)]; + uint64_t last_value; +}; + +struct gf_split_16_64_lazy_data { + uint64_t tables[4][(1<<16)]; + uint64_t last_value; +}; + +struct gf_split_8_8_data { + uint64_t tables[15][256][256]; +}; + +void gf_w64_neon_split_init(gf_t *gf); + +#endif /* GF_COMPLETE_GF_W64_H */ diff --git a/src/erasure-code/jerasure/gf-complete/include/gf_w8.h b/src/erasure-code/jerasure/gf-complete/include/gf_w8.h new file mode 100644 index 00000000..938fcfdf --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/include/gf_w8.h @@ -0,0 +1,99 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w8.c + * + * Defines and data stuctures for 8-bit Galois fields + */ + +#ifndef GF_COMPLETE_GF_W8_H +#define GF_COMPLETE_GF_W8_H + +#include "gf_int.h" +#include + +#define GF_FIELD_WIDTH (8) +#define GF_FIELD_SIZE (1 << GF_FIELD_WIDTH) +#define GF_HALF_SIZE (1 << (GF_FIELD_WIDTH/2)) +#define GF_MULT_GROUP_SIZE GF_FIELD_SIZE-1 + +#define GF_BASE_FIELD_WIDTH (4) +#define GF_BASE_FIELD_SIZE (1 << GF_BASE_FIELD_WIDTH) + +struct gf_w8_logtable_data { + uint8_t log_tbl[GF_FIELD_SIZE]; + uint8_t antilog_tbl[GF_FIELD_SIZE * 2]; + uint8_t inv_tbl[GF_FIELD_SIZE]; +}; + +struct gf_w8_logzero_table_data { + short log_tbl[GF_FIELD_SIZE]; /* Make this signed, so that we can divide easily */ + uint8_t antilog_tbl[512+512+1]; + uint8_t *div_tbl; + uint8_t *inv_tbl; +}; + +struct gf_w8_logzero_small_table_data { + short log_tbl[GF_FIELD_SIZE]; /* Make this signed, so that we can divide easily */ + uint8_t antilog_tbl[255*3]; + uint8_t inv_tbl[GF_FIELD_SIZE]; + uint8_t *div_tbl; +}; + +struct gf_w8_composite_data { + uint8_t *mult_table; +}; + +/* Don't change the order of these relative to gf_w8_half_table_data */ + +struct gf_w8_default_data { + uint8_t high[GF_FIELD_SIZE][GF_HALF_SIZE]; + uint8_t low[GF_FIELD_SIZE][GF_HALF_SIZE]; + uint8_t divtable[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t multtable[GF_FIELD_SIZE][GF_FIELD_SIZE]; +}; + +struct gf_w8_half_table_data { + uint8_t high[GF_FIELD_SIZE][GF_HALF_SIZE]; + uint8_t low[GF_FIELD_SIZE][GF_HALF_SIZE]; +}; + +struct gf_w8_single_table_data { + uint8_t divtable[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t multtable[GF_FIELD_SIZE][GF_FIELD_SIZE]; +}; + +struct gf_w8_double_table_data { + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint16_t mult[GF_FIELD_SIZE][GF_FIELD_SIZE*GF_FIELD_SIZE]; +}; + +struct gf_w8_double_table_lazy_data { + uint8_t div[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint8_t smult[GF_FIELD_SIZE][GF_FIELD_SIZE]; + uint16_t mult[GF_FIELD_SIZE*GF_FIELD_SIZE]; +}; + +struct gf_w4_logtable_data { + uint8_t log_tbl[GF_BASE_FIELD_SIZE]; + uint8_t antilog_tbl[GF_BASE_FIELD_SIZE * 2]; + uint8_t *antilog_tbl_div; +}; + +struct gf_w4_single_table_data { + uint8_t div[GF_BASE_FIELD_SIZE][GF_BASE_FIELD_SIZE]; + uint8_t mult[GF_BASE_FIELD_SIZE][GF_BASE_FIELD_SIZE]; +}; + +struct gf_w8_bytwo_data { + uint64_t prim_poly; + uint64_t mask1; + uint64_t mask2; +}; + +int gf_w8_neon_cfm_init(gf_t *gf); +void gf_w8_neon_split_init(gf_t *gf); + +#endif /* GF_COMPLETE_GF_W8_H */ diff --git a/src/erasure-code/jerasure/gf-complete/m4/ax_check_compile_flag.m4 b/src/erasure-code/jerasure/gf-complete/m4/ax_check_compile_flag.m4 new file mode 100644 index 00000000..c3a8d695 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/m4/ax_check_compile_flag.m4 @@ -0,0 +1,72 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS]) +# +# DESCRIPTION +# +# Check whether the given FLAG works with the current language's compiler +# or gives an error. (Warnings, however, are ignored) +# +# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on +# success/failure. +# +# If EXTRA-FLAGS is defined, it is added to the current language's default +# flags (e.g. CFLAGS) when the check is done. The check is thus made with +# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to +# force the compiler to issue an error when a bad flag is given. +# +# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this +# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG. +# +# LICENSE +# +# Copyright (c) 2008 Guido U. Draheim +# Copyright (c) 2011 Maarten Bosmans +# +# This program is free software: you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the +# Free Software Foundation, either version 3 of the License, or (at your +# option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +# Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program. If not, see . +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 2 + +AC_DEFUN([AX_CHECK_COMPILE_FLAG], +[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX +AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl +AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [ + ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS + _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], + [AS_VAR_SET(CACHEVAR,[yes])], + [AS_VAR_SET(CACHEVAR,[no])]) + _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags]) +AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes], + [m4_default([$2], :)], + [m4_default([$3], :)]) +AS_VAR_POPDEF([CACHEVAR])dnl +])dnl AX_CHECK_COMPILE_FLAGS diff --git a/src/erasure-code/jerasure/gf-complete/m4/ax_ext.m4 b/src/erasure-code/jerasure/gf-complete/m4/ax_ext.m4 new file mode 100644 index 00000000..95c4dbe2 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/m4/ax_ext.m4 @@ -0,0 +1,75 @@ +# +# This macro is based on http://www.gnu.org/software/autoconf-archive/ax_ext.html +# but simplified to do compile time SIMD checks only +# + +AC_DEFUN([AX_EXT], +[ + AC_REQUIRE([AC_CANONICAL_HOST]) + + case $host_cpu in + aarch64*) + AC_DEFINE(HAVE_ARCH_AARCH64,,[targeting AArch64]) + SIMD_FLAGS="$SIMD_FLAGS -DARCH_AARCH64" + + AC_CACHE_CHECK([whether NEON is enabled], [ax_cv_have_neon_ext], [ax_cv_have_neon_ext=yes]) + if test "$ax_cv_have_neon_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-march=armv8-a+simd, [SIMD_FLAGS="$SIMD_FLAGS -march=armv8-a+simd -DARM_NEON"], [ax_cv_have_neon_ext=no]) + fi + ;; + + arm*) + AC_CACHE_CHECK([whether NEON is enabled], [ax_cv_have_neon_ext], [ax_cv_have_neon_ext=yes]) + if test "$ax_cv_have_neon_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-mfpu=neon, [SIMD_FLAGS="$SIMD_FLAGS -mfpu=neon -DARM_NEON"], [ax_cv_have_neon_ext=no]) + fi + ;; + + powerpc*) + AC_CACHE_CHECK([whether altivec is enabled], [ax_cv_have_altivec_ext], [ax_cv_have_altivec_ext=yes]) + if test "$ax_cv_have_altivec_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-faltivec, [SIMD_FLAGS="$SIMD_FLAGS -faltivec"], [ax_cv_have_altivec_ext=no]) + fi + ;; + + i[[3456]]86*|x86_64*|amd64*) + + AC_CACHE_CHECK([whether sse is enabled], [ax_cv_have_sse_ext], [ax_cv_have_sse_ext=yes]) + if test "$ax_cv_have_sse_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-msse, [SIMD_FLAGS="$SIMD_FLAGS -msse -DINTEL_SSE"], [ax_cv_have_sse_ext=no]) + fi + + AC_CACHE_CHECK([whether sse2 is enabled], [ax_cv_have_sse2_ext], [ax_cv_have_sse2_ext=yes]) + if test "$ax_cv_have_sse2_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-msse2, [SIMD_FLAGS="$SIMD_FLAGS -msse2 -DINTEL_SSE2"], [ax_cv_have_sse2_ext=no]) + fi + + AC_CACHE_CHECK([whether sse3 is enabled], [ax_cv_have_sse3_ext], [ax_cv_have_sse3_ext=yes]) + if test "$ax_cv_have_sse3_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-msse3, [SIMD_FLAGS="$SIMD_FLAGS -msse3 -DINTEL_SSE3"], [ax_cv_have_sse3_ext=no]) + fi + + AC_CACHE_CHECK([whether ssse3 is enabled], [ax_cv_have_ssse3_ext], [ax_cv_have_ssse3_ext=yes]) + if test "$ax_cv_have_ssse3_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-mssse3, [SIMD_FLAGS="$SIMD_FLAGS -mssse3 -DINTEL_SSSE3"], [ax_cv_have_ssse3_ext=no]) + fi + + AC_CACHE_CHECK([whether pclmuldq is enabled], [ax_cv_have_pclmuldq_ext], [ax_cv_have_pclmuldq_ext=yes]) + if test "$ax_cv_have_pclmuldq_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-mpclmul, [SIMD_FLAGS="$SIMD_FLAGS -mpclmul -DINTEL_SSE4_PCLMUL"], [ax_cv_have_pclmuldq_ext=no]) + fi + + AC_CACHE_CHECK([whether sse4.1 is enabled], [ax_cv_have_sse41_ext], [ax_cv_have_sse41_ext=yes]) + if test "$ax_cv_have_sse41_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-msse4.1, [SIMD_FLAGS="$SIMD_FLAGS -msse4.1 -DINTEL_SSE4"], [ax_cv_have_sse41_ext=no]) + fi + + AC_CACHE_CHECK([whether sse4.2 is enabled], [ax_cv_have_sse42_ext], [ax_cv_have_sse42_ext=yes]) + if test "$ax_cv_have_sse42_ext" = yes; then + AX_CHECK_COMPILE_FLAG(-msse4.2, [SIMD_FLAGS="$SIMD_FLAGS -msse4.2 -DINTEL_SSE4"], [ax_cv_have_sse42_ext=no]) + fi + ;; + esac + + AC_SUBST(SIMD_FLAGS) +]) diff --git a/src/erasure-code/jerasure/gf-complete/manual/gf-complete.html b/src/erasure-code/jerasure/gf-complete/manual/gf-complete.html new file mode 100644 index 00000000..ed79e257 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/manual/gf-complete.html @@ -0,0 +1,3484 @@ + + + + + + + + + + +
+ +

+GF-Complete: A Comprehensive Open Source Library for Galois
+Field Arithmetic +

+ +

Version 1.02

+ +

James S. Plank*        Ethan L. Miller +Kevin M. Greenan        Benjamin A. Arnold
+John A. Burnum        Adam W. Disney        +Allen C. McBride + +


+ + + + + +https://bitbucket.org/jimplank/gf-complete + +

+ +http://web.eecs.utk.edu/~plank/plank/papers/GF-Complete-Manual-1.02.pdf + + +

+ + + + + + + +
+ + +
+ +This is a user's manual for GF-Complete, version 1.02. This release supersedes version 0.1 and represents the first +major release of GF-Complete. To our knowledge, this library implements every Galois Field multiplication technique +applicable to erasure coding for storage, which is why we named it GF-Complete. The primary goal of this library is +to allow storage system researchers and implementors to utilize very fast Galois Field arithmetic for Reed-Solomon +coding and the like in their storage installations. The secondary goal is to allow those who want to explore different +ways to perform Galois Field arithmetic to be able to do so effectively. + + +

+If you wish to cite GF-Complete, please cite technical report UT-CS-13-716: [PMG+13]. + +

+ + +

If You Use This Library or Document

+ + + +Please send me an email to let me know how it goes. Or send me an email just to let me know you are using the +library. One of the ways in which we are evaluated both internally and externally is by the impact of our work, and if +you have found this library and/or this document useful, we would like to be able to document it. Please send mail to +plank@cs.utk.edu. Please send bug reports to that address as well. + + + +

+The library itself is protected by the New BSD License. It is free to use and modify within the bounds of this +license. To the authors' knowledge, none of the techniques implemented in this library have been patented, and the +authors are not pursing patents.


+ +
+ + +Finding the Code +

+This code is actively maintained on bitbucket: https://bitbucket.org/jimplank/gf-complete. There are +previous versions on my UTK site as a technical report; however, that it too hard to maintain, so the main version is +on bitbucket.

+ + +Two Related Papers

+ +This software acccompanies a large paper that describes these implementation techniques in detail [PGM13a]. We +will refer to this as "The Paper." You do not have to read The Paper to use the software. However, if you want to +start exploring the various implementations, then The Paper is where you'll want to go to learn about the techniques +in detail. + + + +

This library implements the techniques described in the paper "Screaming Fast Galois Field Arithmetic Using Intel +SIMD Instructions," [PGM13b]. The Paper describes all of those techniques as well. +



+ +If You Would Like HelpWith the Software

+ +Please contact the first author of this manual.

+ +Changes from Revision 1.01 +

+The major change is that we are using autoconf to aid with compilation, thus obviating the need for the old flag_tester +code. Additionally, we have added a quick timing tool, and we have modified gf_methods so that it may be used to +run the timing tool and the unit tester. + + + + + + + + + + + + + + + + + + +
+CONTENT 3 +

Contents

+
+1 Introduction 5 +

+2 Files in the Library 6
+ +
+2.1 Header files in the directory "include" . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
+2.2 Source files in the "src" directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
+2.3 Library tools files in the "tools" directory . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
+2.4 The unit tester in the "test" directory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
+2.5 Example programs in the "examples" directory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 + +
+
+
+ +3 Compilation 8

+4 Some Tools and Examples to Get You Started 8

+ + + +
+4.1 Three Simple Command Line Tools: gf_mult, gf_div and gf_add . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
+4.2 Quick Starting Example #1: Simple multiplication and division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
+4.3 Quick Starting Example #2: Multiplying a region by a constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
+4.4 Quick Starting Example #3: Using w = 64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
+4.5 Quick Starting Example #4: Using w = 128. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 +
+
+ + +
+5 Important Information on Alignment when Multiplying Regions 12

+ +6 The Defaults 13
+ +
+ +
+6.1 Changing the Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
+ + +
    +
  • 6.1.1 Changing the Components of a Galois Field with create_gf_from_argv() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
    +
    • +
  • +6.1.2 Changing the Polynomial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
    +
    • +
  • +6.1.3 Changing the Multiplication Technique. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 +
    • + + +
  • +6.1.4 Changing the Division Technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 +
    • + + +
  • +6.1.5 Changing the Region Technique. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 19 +
    • +
+6.2 Determining Supported Techniques with gf_methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
+ +6.3 Testing with gf_unit, gf_time, and time_tool.sh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 + +
    +
  • +6.3.1 time_tool.sh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 22 +
    • + +
  • +6.3.2 An example of gf_methods and time_tool.sh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .. . . 23 +
    • + +
+ +6.4 Calling gf_init_hard() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . 24
+ +6.5 gf_size() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . .. . 26

+
+ + +
+8 Further Information on Options and Algorithms 26


+
+7.1 Inlining Single Multiplication and Division for Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
+7.2 Using different techniques for single and region multiplication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
+7.3 General w . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
+ +7.4 Arguments to "SPLIT" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
+7.5 Arguments to "GROUP" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
+7.6 Considerations with "COMPOSITE" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
+7.7 "CARRY_FREE" and the Primitive Polynomial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
+7.8 More on Primitive Polynomials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 31
+ + +
    +
  • +7.8.1 Primitive Polynomials that are not Primitive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
    + +
    • +
  • 7.8.2 Default Polynomials for Composite Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
    + +
    • +
+ +
+ + + + + + + + + + + +
+CONTENT 4 + +
+
    +
  • 7.8.3 The Program gf_poly for Verifying Irreducibility of Polynomials 33 +
    • +
+ + +7.9"ALTMAP" considerations and extract_word() 34 +
    +
  • + +7.9.1 Alternate mappings with "SPLIT" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
    +
    • +
  • +7.9.2 Alternate mappings with "COMPOSITE" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
    +
    • +
  • +7.9.3 The mapping of "CAUCHY" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .. . . . . . . . . . . .. 37
    +
    • +
+
+ + +8 Thread Safety 37

+ +9 Listing of Procedures 37

+ +10 Troubleshooting 38

+11 Timings 41

+ +
+11.1 Multiply() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . . .. . . . 42
+11.2 Divide() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . .. . . . . 42
+11.3 Multiply Region() . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .. . . . . . . . .. . . . . . . . . . . . . . . . . . 43
+
+ + + + + + +
+INTRODUCTION 5 + + +

1 Introduction

+ +Galois Field arithmetic forms the backbone of erasure-coded storage systems, most famously the Reed-Solomon +erasure code. A Galois Field is defined over w-bit words and is termed GF(2w). As such, the elements of a Galois +Field are the integers 0, 1, . . ., 2w - 1. Galois Field arithmetic defines addition and multiplication over these closed +sets of integers in such a way that they work as you would hope they would work. Specifically, every number has a +unique multiplicative inverse. Moreover, there is a value, typically the value 2, which has the property that you can +enumerate all of the non-zero elements of the field by taking that value to successively higher powers. + + +

Addition in a Galois Field is equal to the bitwise exclusive-or operation. That's nice and convenient. Multiplication +is a little more complex, and there are many, many ways to implement it. The Paper describes them all, and the +following references providemore supporting material: [Anv09, GMS08, LHy08, LD00, LBOX12, Pla97]. The intent +of this library is to implement all of the techniques. That way, their performancemay be compared, and their tradeoffs +may be analyzed.

+ + + + +

    + +When used for erasure codes, there are typically five important operations:
    +
  1. Adding two numbers in GF(2w). That's bitwise exclusive-or.
    2. +
  2. Multiplying two numbers in GF(2w). Erasure codes are usually based on matrices in GF(2w), and constructing +these matrices requires both addition and multiplication.
    3. +
  3. Dividing two numbers in GF(2w). Sometimes you need to divide to construct matrices (for example, Cauchy +Reed-Solomon codes [BKK+95, Rab89]). More often, though, you use division to invert matrices for decoding. +Sometimes it is easier to find a number's inverse than it is to divide. In that case, you can divide by multiplying +by an inverse.
    4. + +
  4. adding two regions of numbers in GF(2w), which will be explained along with...
    5. +
  5. Mutiplying a region of numbers in GF(2w) by a constant in GF(2w). Erasure coding typically boils down +to performing dot products in GF(2w). For example, you may define a coding disk using the equation:

    6. + + + + +
    c0= d0 + 2d1 + 4d2 + 8d3.

    + +That looks like three multiplications and three additions However, the way ' implemented in a disk system +looks as in Figure 1. Large regions of disks are partitioned into w-bit words in GF(2w). In the example, let us +suppose that w = 8, and therefore that words are bytes. Then the regions pictured are 1 KB from each disk. +The bytes on disk Di are labeled di,0, di,1, . . . , di,1023, and the equation above is replicated 1024 times. For +0 ≤ j < 1024: +

    +
    c0,j = d0,j + 2d1,j + 4d2,j + 8d3,j .
    +
    + + +While it's possible to implement each of these 1024 equations independently, using the single multiplication +and addition operations above, it is often much more efficient to aggregate. For example, most computer architectures +support bitwise exclusive-or of 64 and 128 bit words. Thus, it makes much more sense to add regions +of numbers in 64 or 128 bit chunks rather than as words in GF(2w). Multiplying a region by a constant can +leverage similar optimizations.
+ + +

GF-Complete supports multiplication and division of single values for all values of w ≤ 32, plus w = 64 and w = +128. It also supports adding two regions of memory (for any value of w, since addition equals XOR), and multiplying +a region by a constant in GF(24), GF(28), GF(216), GF(232), GF(264) and GF(2128). These values are chosen +because words in GF(2w) fit into machine words with these values of w. Other values of w don't lend themselves +to efficient multiplication of regions by constants (although see the "CAUCHY" option in section 6.1.5 for a way to +multiply regions for other values of w).

+ + + + + + +
+ +2     FILES IN THE LIBRARY 6


+ + + +



+ +Figure 1: An example of adding two regions of numbers, and multiplying a region of numbers by a constant +in GF(2w) . In this example, w = 8, and each disk is holding a 1KB region. The same coding equation - +c0,j = d0,j + ad1,j + a2d2,j + a3d3,j is applied 1024 times. However, rather than executing this equation 1024 +times, it is more efficient to implement this with three region-constant multiplications and three region-region additions. + +

2     Files in the Library

+This section provides an overview of the files that compose GF-Complete. They are partitioned among multiple +directories. + +

2.1     Header files in the directory "include"

+ +The following header files are part of GF-Complete. +
    +
  • gf_complete.h: This is the header file that applications should include. It defines the gf_t type, which holds +all of the data that you need to perform the various operations in GF(2w). It also defines all of the arithmetic +operations. For an application to use this library, you should include gf_complete.h and then compile with the +library src/libgf_complete.la.

    • + +
  • gf_method.h: If you are wanting to modify the implementation techniques from the defaults, this file provides +a "helper" function so that you can do it from the Unix command line. +

    • + +
  • gf_general.h: This file has helper routines for doing basic Galois Field operations with any legal value of w. +The problem is that w ≤ 32, w = 64 and w = 128 all have different data types, which is a pain. The procedures +in this file try to alleviate that pain. They are used in gf_mult, gf_unit and gf_time. I'm guessing that most +applications won't use them, as most applications use w ≤ 32.

    • + +
  • gf_rand.h: I've learned that srand48() and its kin are not supported in all C installations. Therefore, this file +defines some randomnumber generators to help test the programs. The randomnumber generator is the "Mother +
    • + +
+ + + + + + + +
+ +2     FILES IN THE LIBRARY 7


+
    + +of All" random number generator [Mar94] which we've selected because it has no patent issues. gf_unit and +gf_time use these random number generators.

    +
  • gf_int.h: This is an internal header file that the various source files use. This is not intended for applications to +include.

    • +
  • config.xx and stamp-h1 are created by autoconf, and should be ignored by applications.
    • +
+ +

2.2     Source files in the "src" directory"

+
    +The following C files compose gf_complete.a, and they are in the direcoty src. You shouldn't have to mess with these +files, but we include them in case you have to:

    +
  • gf_.c: This implements all of the procedures in both gf_complete.h and gf_int.h.

    • +
  • gf_w4.c: Procedures specific to w = 4.

    • +
  • gf_w8.c: Procedures specific to w = 8

    • +
  • gf_w16.c: Procedures specific to w = 16

    • +
  • gf_w32.c: Procedures specific to w = 32

    • +
  • gf_w64.c: Procedures specific to w = 64

    • +
  • gf_w128.c: Procedures specific to w = 128

    • +
  • gf_wgen.c: Procedures specific to other values of w between 1 and 31

    • +
  • gf_general.c: Procedures that let you manipulate general values, regardless of whether w ≤ 32, w = 64 +or w = 128. (I.e. the procedures defined in gf_ general.h)

    • +
  • gf_method.c: Procedures to help you switch between the various implementation techniques. (I.e. the procedures +defined in gf_method.h)

    • +
  • gf_ rand.c:"The Mother of all" random number generator. (I.e. the procedures defined in gf_rand.h)

+ +

2.3     Library tools files in the "tools" directory

+ +
    +The following are tools to help you with Galois Field arithmetic, and with the library. They are explained in greater +detail elsewhere in this manual.

    +
  • gf_mult.c, gf_ div.c and gf_ add: Command line tools to do multiplication, division and addition by single numbers

    • +
  • gf_time.c: A program that times the procedures for given values of w and implementation options

    • +
  • time_tool.sh: A shell script that helps perform rough timings of the various multiplication, division and region +operations in GF-Complete

    • +
  • gf_methods.c: A program that enumerates most of the implementation methods supported by GF-Complete

    • +
  • gf_poly.c: A program to identify irreducible polynomials in regular and composite Galois Fields

    • + +
+ + + + + + + + +
+ +3     COMPILATION 8


+ + +

2.4     The unit tester in the "test" directory

+ +The test directory contains the proram gf_unit.c, which performs a battery of unit tests on GF-Complete. This is +explained in more detail in section 6.3. + + +

2.5    Example programs in the "examples" directory

+ +There are seven example programs to help you understand various facets of GF-Complete. They are in the files +gf_example x.c in the examples directory. They are explained in sections 4.2 through 4.5, and section 7.9.

+ +

3     Compilation

+ +From revision 1.02 forward, we are using autoconf. The old "flag tester" directory is now gone, as it is no longer in +use.

+To compile and install, you should do the standard operations that you do with most open source Unix code:

+ +UNIX> ./configure
+...
+UNIX> make
+...
+UNIX> sudo make install

+ + +

If you perform the install, then the header, source, tool, and library files will be moved to system locations. In +particular, you may then compile the library by linking with the flag -lgf_complete, and you may use the tools from a +global executable directory (like /usr/local/bin).

+ +

+If you don't perform the install, then the header and tool files will be in their respective directories, and the library +will be in src/libgf_complete.la.

+

+If your system supports the various Intel SIMD instructions, the compiler will find them, and GF-Complete will +use them by default.

+ + + +

4     Some Tools and Examples to Get You Started

+

4.1 Three Simple Command Line Tools: gf_mult, gf_div and gf_add

+ + +Before delving into the library, it may be helpful to explore Galois Field arithmetic with the command line tools: +gf_mult, gf_div and gf_add. These perform multiplication, division and addition on elements in GF(2w). If these are +not installed on your system, then you may find them in the tools directory. Their syntax is: +
    +
  • gf_mult a b w - Multiplies a and b in GF(2w).

    • +
  • gf_div a b w - Divides a by b in GF(2w ).

    • +
  • gf_add a b w - Adds a and b in GF(2w ).

    • + +You may use any value of w from 1 to 32, plus 64 and 128. By default, the values are read and printed in decimal; +however, if you append an 'h' to w , then a, b and the result will be printed in hexadecimal. For w = 128, the 'h' is +mandatory, and all values will be printed in hexadecimal. + + + + + + + +
    + +4     SOME TOOLS AND EXAMPLES TO GET YOU STARTED 9 9


    + + +

    Try them out on some examples like the ones below. You of course don't need to know that, for example, 5 * 4 = 7 +in GF(24 ) ; however, once you know that, you know that 7/ +5 = 4 and 7/4 = 5. You should be able to verify the gf_add +statements below in your head. As for the other gf_mult's, you can simply verify that division and multiplication work +with each other as you hope they would.

    +

    +
    + +UNIX> gf_mult 5 4 4
    +7
    +UNIX> gf_div 7 5 4
    +4
    +UNIX> gf_div 7 4 4
    +5
    +UNIX> gf_mult 8000 2 16h
    +100b
    +UNIX> gf_add f0f0f0f0f0f0f0f0 1313131313131313 64h
    +e3e3e3e3e3e3e3e3
    +UNIX> gf_mult f0f0f0f0f0f0f0f0 1313131313131313 64h
    +8da08da08da08da0
    +UNIX> gf_div 8da08da08da08da0 1313131313131313 64h
    +f0f0f0f0f0f0f0f0
    +UNIX> gf_add f0f0f0f0f0f0f0f01313131313131313 1313131313131313f0f0f0f0f0f0f0f0 128h
    +e3e3e3e3e3e3e3e3e3e3e3e3e3e3e3e3
    +UNIX> gf_mult f0f0f0f0f0f0f0f01313131313131313 1313131313131313f0f0f0f0f0f0f0f0 128h
    +786278627862784982d782d782d7816e
    +UNIX> gf_div 786278627862784982d782d782d7816e f0f0f0f0f0f0f0f01313131313131313 128h
    +1313131313131313f0f0f0f0f0f0f0f0
    +UNIX>

    + +
    + + +Don't bother trying to read the source code of these programs yet. Start with some simpler examples like the ones +below.

    + +

    4.2 Quick Starting Example #1: Simple multiplication and division

    + +The source files for these examples are in the examples directory. +

    These two examples are intended for those who just want to use the library without getting too complex. The +first example is gf_example 1, and it takes one command line argument - w, which must be between 1 and 32. It +generates two random non-zero numbers in GF(2w ) and multiplies them. After doing that, it divides the product by +each number.

    +

    +To perform multiplication and division in GF(2w ) , you must declare an instance of the gf_t type, and then initialize +it for GF(2w ) by calling gf_init_easy(). This is done in gf_example 1.c with the following lines:



    + +gf_t gf;

    r +...

    +if (!gf_init_easy(&gf, w)) {
    +fprintf(stderr, "Couldn't initialize GF structure.\n");
    +exit(0);
    +}
    + + + + + + +
    + +4     SOME TOOLS AND EXAMPLES TO GET YOU STARTED 10


    + +

    Once gf is initialized, you may use it for multiplication and division with the function pointers multiply.w32 and +divide.w32. These work for any element of GF(2w) so long as w ≤ 32.



    + +
    +
    +c = gf.multiply.w32(&gf, a, b);
    +printf("%u * %u = %u\n", a, b, c);

    +printf("%u / %u = %u\n", c, a, gf.divide.w32(&gf, c, a));
    +printf("%u / %u = %u\n", c, b, gf.divide.w32(&gf, c, b));
    + + +
    +

    +Go ahead and test this program out. You can use gf_mult and gf_div to verify the results:

    + +
    +UNIX> gf_example_1 4
    +12 * 4 = 5
    +5 / 12 = 4
    +5 / 4 = 12
    +UNIX> gf_mult 12 4 4
    +5
    +UNIX> gf_example_1 16
    +14411 * 60911 = 44568
    +44568 / 14411 = 60911
    +44568 / 60911 = 14411
    +UNIX> gf_mult 14411 60911 16
    +44568
    +UNIX>

    +
    + +gf_init_easy() (and later_gf_init_hard()) do call malloc() to implement internal structures. To release memory, call +gf_free(). Please see section 6.4 to see how to call gf_init_hard() in such a way that it doesn't call malloc().

    + + + +

    4.3      Quick Starting Example #2: Multiplying a region by a constant

    + + +The program gf_example 2 expands on gf_example 1. If w is equal to 4, 8, 16 or 32, it performs a region multiply +operation. It allocates two sixteen byte regions, r1 and r2, and then multiples r1 by a and puts the result in r2 using +the multiply_region.w32 function pointer:

    + +
    +gf.multiply_region.w32 (&gf, r1, r2, a, 16, 0);

    +
    + +That last argument specifies whether to simply place the product into r2 or to XOR it with the contents that are already +in r2. Zero means to place the product there. When we run it, it prints the results of the multiply_region.w32 in +hexadecimal. Again, you can verify it using gf_mult:

    +
    +UNIX> gf_example_2 4
    +12 * 2 = 11
    +11 / 12 = 2
    +11 / 2 = 12

    +multiply_region by 0xc (12)

    +R1 (the source): 0 2 d 9 d 6 8 a 8 d b 3 5 c 1 8 8 e b 0 6 1 5 a 2 c 4 b 3 9 3 6
    +R2 (the product): 0 b 3 6 3 e a 1 a 3 d 7 9 f c a a 4 d 0 e c 9 1 b f 5 d 7 6 7 e
    + +
    + + + + + + + + + + +
    + +4     SOME TOOLS AND EXAMPLES TO GET YOU STARTED 11


    + +
    + + + + + + + + +
    UNIX> gf_example_2 16
    49598 * 35999 = 19867
    19867 / 49598 = 35999
    19867 / 35999 = 49598

    + + +  multiply_region by 0xc1be (49598)

    + + + + + + +
    R1 (the source): 8c9f b30e 5bf3 7cbb 16a9 105d 9368 4bbe
    R2 (the product): 4d9b 992d 02f2 c95c 228e ec82 324e 35e4
    +
    +
    +
    +UNIX> gf_mult c1be 8c9f 16h
    +4d9b
    +UNIX> gf_mult c1be b30e 16h
    +992d
    +UNIX>

    +
    +
    + +

    4.4       Quick Starting Example #3: Using w = 64

    +The program in gf_example 3.c is identical to the previous program, except it uses GF(264 ). Now a, b and c are +uint64 t's, and you have to use the function pointers that have w64 extensions so that the larger types may be employed. +

    +
    + +UNIX> gf_example_31 + + + + + + + +
    a9af3adef0d23242 * 61fd8433b25fe7cd = bf5acdde4c41ee0c
    bf5acdde4c41ee0c / a9af3adef0d23242 = 61fd8433b25fe7cd
    bf5acdde4c41ee0c / 61fd8433b25fe7cd = a9af3adef0d23242


    + +  multiply_region by a9af3adef0d23242

    + + + + +
    R1 (the source): 61fd8433b25fe7cd 272d5d4b19ca44b7 3870bf7e63c3451a 08992149b3e2f8b7
    R2 (the product): bf5acdde4c41ee0c ad2d786c6e4d66b7 43a7d857503fd261 d3d29c7be46b1f7c
    + +
    + +UNIX> gf_mult a9af3adef0d23242 61fd8433b25fe7cd 64h
    +bf5acdde4c41ee0c
    +UNIX>

    +
    +
    +

    4.5       Quick Starting Example #4: Using w = 128

    +Finally, the program in gf_example_4.c uses GF(2128). Since there is not universal support for uint128 t, the library +represents 128-bit numbers as arrays of two uint64 t's. The function pointers for multiplication, division and region +multiplication now accept the return values as arguments:

    + +gf.multiply.w128(&gf, a, b, c);

    + +Again, we can use gf_mult and gf_div to verify the results:

    +
    +
    +UNIX> gf_example_4
    + + + + + + +
    e252d9c145c0bf29b85b21a1ae2921fa * b23044e7f45daf4d70695fb7bf249432 =
    7883669ef3001d7fabf83784d52eb414
    + +
    + + + + + + + + +
    + +4     IMPORTANT INFORMATION ON ALIGNMENT WHEN MULTIPLYING REGIONS 12


    + +
    +multiply_region by e252d9c145c0bf29b85b21a1ae2921fa
    +R1 (the source): f4f56f08fa92494c5faa57ddcd874149 b4c06a61adbbec2f4b0ffc68e43008cb
    +R2 (the product): b1e34d34b031660676965b868b892043 382f12719ffe3978385f5d97540a13a1
    +UNIX> gf_mult e252d9c145c0bf29b85b21a1ae2921fa f4f56f08fa92494c5faa57ddcd874149 128h
    +b1e34d34b031660676965b868b892043
    +UNIX> gf_div 382f12719ffe3978385f5d97540a13a1 b4c06a61adbbec2f4b0ffc68e43008cb 128h
    +e252d9c145c0bf29b85b21a1ae2921fa
    +UNIX>

    + +
    + + +

    5      Important Information on Alignment when Multiplying Regions

    + + + +In order to make multiplication of regions fast, we often employ 64 and 128 bit instructions. This has ramifications +for pointer alignment, because we want to avoid bus errors, and because on many machines, loading and manipulating +aligned quantities is much faster than unalinged quantities.

    + + +When you perform multiply_region.wxx(gf, source, dest, value, size, add ), there are three requirements: +
      +
    1. + The pointers source and dest must be aligned for w-bit words. For w = 4 and w = 8, there is no restriction; +however for w = 16, the pointers must be multiples of 2, for w = 32, they must be multiples of 4, and for +w ϵ {64, 128}, they must be multiples of 8.

      2. + +
    2. The size must be a multiple of [ w / + +8 .] + With w = 4 and w = 8, w/ +8 = 1 and there is no restriction. The other +sizes must be multiples of w / +8 because you have to be multiplying whole elements of GF(2w ) .

      3. + +
    3. The source and dest pointers must be aligned identically with respect to each other for the implementation +chosen. This is subtle, and we explain it in detail in the next few paragraphs. However, if you'd rather not figure +it out, the following recommendation will always work in GF-Complete:
      4. + +
    + + + +
    +If you want to be safe, make sure that source and dest are both multiples of 16. That is not a +strict requirement, but it will always work!

    +
    + + +If you want to relax the above recommendation, please read further. +

    When performing multiply_region.wxx() , the implementation is typically optimized for a region of bytes whose +size must be a multiple of a variable s ,, and which must be aligned to a multiple of another variable t . For example, +when doing multiply_region.w32() in GF(216 ) with SSE enabled, the implementation is optimized for regions of +32 bytes, which must be aligned on a 16-byte quantity. Thus, s = 32 and t = 16. However, we don't want multiply_ +region.w32() to be too restrictive, so instead of requiring source and dest to be aligned to 16-byte regions, we +require that (source mod 16) equal (dest mod 16). Or, in general, that (source mod t) equal (dest mod t).

    + + +

    +Then, multiply_region.wxx() proceeds in three phases. In the first phase, multiply.wxx() is called on successive +words until (source mod t) equals zero. The second phase then performs the optimized region multiplication on +chunks of s bytes, until the remaining part of the region is less than s bytes. At that point, the third phase calls +multiply.wxx() on the last part of the region.

    + +A detailed example helps to illustrate. Suppose we make the following call in GF(216) with SSE enabled:

    +
    multiply region.w32(gf, 0x10006, 0x20006, a, 274, 0)
    + + + + + + + +
    + +2     FILES IN THE LIBRARY 13


    + + + +



    + +Figure 2: Example of multiplying a region of 274 bytes in GF(216) when (source mod 16) = (dest mod 16) = 6. The +alignment parameters are s = 32 and t = 16. The multiplication is in three phases, which correspond to the initial +unaligned region (10 bytes), the aligned region of s-byte chunks (256 bytes), and the final leftover region (8 bytes). + + +

    First, note that source and dest are aligned on two-byte quantities, which they must be in GF(216). Second, note +that size is a multiple of [ 16/ +8 ] = 2. And last, note that (source mod 16) equals (dest mod 16). We illustrate the three +phases of region multiplication in Figure 2. Because (source mod 16) = 6, there are 10 bytes of unaligned words that +are multiplied with five calls to multiply.w32() in the first phase. The second phase multiplies 256 bytes (eight chunks +of s = 32 bytes) using the SSE instructions. That leaves 8 bytes remaining for the third phase. +

    + +

    +When we describe the defaults and the various implementation options, we specify s and t as "alignment parameters." +

    +

    +One of the advanced region options is using an alternate mapping of words to memory ("ALTMAP"). These interact +in a more subtle manner with alignment. Please see Section 7.9 for details. +

    + +

    6    The Defaults

    + + +GF-Complete implements a wide variety of techniques for multiplication, division and region multiplication. We have +set the defaults with three considerations in mind: +
      +
    1. +Speed: Obviously, we want the implementations to be fast. Therefore, we choose the fastest implementations +that don’t violate the other considerations. The compilation environment is considered. For example, if SSE is +enabled, region multiplication in GF(24 ) employs a single multiplication table. If SSE is not enabled, then a +"double" table is employed that performs table lookup two bytes at a time.

      2. +
    2. +Memory Consumption: We try to keep the memory footprint of GF-Complete low. For example, the fastest +way to perform multiply.w32() in GF(232) is to employ 1.75 MB of multiplication tables (see Section 7.4 +below). We do not include this as a default, however, because we want to keep the default memory consumption +of GF-Complete low. +
      3. + +
+ + + + + + +
+ +6     THE DEFAULTS 14


+ +
    + +3.   Compatibility with "standard" implementations: While there is no de facto standard of Galois Field arithmetic, +most libraries implement the same fields. For that reason, we have not selected composite fields, alternate +polynomials or memory layouts for the defaults, even though these would be faster. Again, see section 7.7 for +more information. + +
+ +

Table 1 shows the default methods used for each power-of-two word size, their alignment parameters s and t, their +memory consumption and their rough performance. The performance tests are on an Intel Core i7-3770 running at +3.40 GHz, and are included solely to give a flavor of performance on a standard microprocessor. Some processors +will be faster with some techniques and others will be slower, so we only put numbers in so that you can ballpark it. +For other values of w between 1 and 31, we use table lookup when w ≤ 8, discrete logarithms when w ≤ 16 and +"Bytwop" for w ≤ 32.

+

+
With SSE +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + +
w Memory
Usage
multiply()
Implementation		Performance
(Mega Ops / s) 		multiply region()
Implementation 		s t Performance
(MB/s)
4 <1K Table501Table16 16 11,659
8 136K Table501Split Table (8,4)16 16 11,824
16 896K Log260Split Table (16,4)32 16 7,749
32 <1K Carry-Free48Split Table (32,4)64 16 5,011
64 2K Carry-Free84Split Table (64,4)128 16 2,402
128 64K Carry-Free48Split Table (128,4)16 16 833
+ + +
+
Without SE
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + +
w Memory
Usage
multiply()
Implementation		Performance
(Mega Ops / s) 		multiply region()
Implementation 		s t Performance
(MB/s)
4 4K Table501Double Table16 16 11,659
8 128K Table501Table1 1 1,397
16 896K Log266Split Table (16,8)32 16 2,135
32 4K Bytwop19Split Table (32,4)4 4 1,149
64 16K Bytwop9Split Table (64,4)8 8 987
128 64K Bytwop1.4Split Table (128,4)16 8 833
+
+
+

+Table 1: The default implementations, memory consumption and rough performance when w is a power of two. The +variables s and t are alignment variables described in Section 5. +

+A few comments on Table 1 are in order. First, with SSE, the performance of multiply() is faster when w = 64 +than when w = 32. That is because the primitive polynomial for w = 32, that has historically been used in Galois +Field implementations, is sub-ideal for using carry-free multiplication (PCLMUL). You can change this polynomial +(see section 7.7) so that the performance matches w = 64.

+

+The region operations for w = 4 and w = 8 without SSE have been selected to have a low memory footprint. There +are better options that consume more memory, or that only work on large memory regions (see section 6.1.5). +

+ +There are times that you may want to stray from the defaults. For example: +
    +
  • +You may want better performance. +
    • + +
+ + + + + + + + + + +
+ +6     THE DEFAULTS 15


+ +
    +
  • You may want a lower memory footprint.
    • +
  • You may want to use a different Galois Field or even a ring.
    • +
  • You only care about multiplying a region by the value two.
    • + +
+ + +

+Our command line tools allow you to deviate from the defaults, and we have two C functions -gf_init_hard() +and create_gf_from_argv() that can be called from application code to override the default methods. There are six +command-line tools that can be used to explore the many techniques implemented in GF-Complete:

+ +

    + +
  • gf_methods is a tool that enumerates most of the possible command-line arguments that can be sent to the other +tools

    • +
  • gf_mult and gf_div are explained above. You may change the multiplication and division technique in these +tools if you desire

    • +
  • gf_unit performs unit tests on a set of techniques to verify correctness

    • +
  • gf_time measures the performance of a particular set of techniques

    • +
  • time_tool.sh makes some quick calls to gf_time so that you may gauge rough performance.

    • +
  • gf_poly tests the irreducibility of polynomials in a Galois Field

    • +
+ + +

To change the default behavior in application code, you need to call gf_init_hard() rather than gf_init_easy(). +Alternatively, you can use create_g_from_argv(), included from gf_method.h, which uses an argv-style array of +strings to specify the options that you want. The procedure in gf_method.c parses the array and makes the proper +gf_init_hard() procedure call. This is the technique used to parse the command line in gf_mult, gf_div, gf_unit et al.

+ + +

6.1.1 Changing the Components of a Galois Field with create gf_from_argv()

+There are five main components to every Galois Field instance: +
    +
  • w
    • +
  • Multiplication technique
    • +
  • Division technique
    • +
  • Region technique(s)
    • +
  • Polynomial
    • +
+ +

The procedures gf_init_hard() and create_gf_from_argv() allow you to specify these parameters when you create +your Galois Field instance. We focus first on create_gf_from_argv(), because that is how the tools allow you to specify +the components. The prototype of create_gf_from_argv() is as follows:


+ +
+int create_gf_from_argv(gf_t *gf, int w, int argc, char **argv, int starting);

+ +You pass it a pointer to a gf_t, which it will initialize. You specify the word size with the parameter w, and then you +pass it an argc/argv pair as in any C or C++ program. You also specify a starting argument, which is where in argv +the specifications begin. If it successfully parses argc and argv, then it creates the gf_t using gf_init_hard() (described +below in section 6.4). It returns one past the last index of argv that it considered when creating the gf_t. If it fails, then +it returns zero, and the gf_t is unmodified. + + + +

For example, gf_mult.c calls create gf_from_argv() by simply passing argc and argv from its main() declaration, +and setting starting to 4.

+ + + + + + + + +
+ +6     THE DEFAULTS 16


+ +

+To choose defaults, argv[starting] should equal "-". Otherwise, you specify the component that you are changing +with "-m" for multiplication technique, "-d" for division technique, "-r" for region technique, and "-p" for the +polynomial. You may change multiple components. You end your specification with a single dash. For example, the +following call multiplies 6 and 5 in GF(24) with polynomial 0x19 using the "SHIFT" technique for multiplication +(we'll explain these parameters later): +



+ +
+UNIX> ./gf_mult 6 5 4 -p 0x19 -m SHIFT -
+7
+UNIX>

+
+ +

If create_gf_from_argv() fails, then you can call the procedure gf_error(), which prints out the reason why create_ +gf_from_argv() failed.

+ + +

6.1.2 Changing the Polynomial

+ +Galois Fields are typically implemented by representing numbers as polynomials with binary coefficients, and then +using the properties of polynomials to define addition and multiplication. You do not need to understand any of that to +use this library. However, if you want to learn more about polynomial representations and how they construct fields, +please refer to The Paper. + +

Multiplication is based on a special polynomial that we will refer to here as the "defining polynomial." This +polynomial has binary coefficients and is of degree w. You may change the polynomial with "-p" and then a number +in hexadecimal (the leading "0x" is optional). It is assumed that the w-th bit of the polynomial is set - you may include +it or omit it. For example, if you wish to set the polynomial for GF(216) to x16 + x5 + x3 + x2 + 1, rather than its +default of x16 + x12 + x3 + x + 1, you may say "-p 0x1002d," "-p 1002d," "-p 0x2d" or "-p 2d." +We discuss changing the polynomial for three reasons in other sections:

+
    +
  • Leveraging carry-free multiplication (section 7.7).
    • +
  • Defining composite fields (section 7.6).
    • +
  • Implementing rings (section 7.8.1).
    • + +
+ +

+Some words about nomenclature with respect to the polynomial. A Galois Field requires the polynomial to be +irreducible .. That means that it cannot be factored. For example, when the coefficients are binary, the polynomial x5+ +x4+x+1 may be factored as (x4+1)(x+1). Therefore it is not irreducible and cannot be used to define a Galois Field. +It may, however, be used to define a ring. Please see section 7.8.1 for a discussion of ring support in GF-Complete.

+

+There is a subset of irreducible polynomials called primitive. These have an important property that one may enumerate +all of the elements of the field by raising 2 to successive posers. All of the default polynomials in GF-Complete +are primitive. However, so long as a polynomial is irreducible, it defines a Galois Field. Please see section 7.7 for a +further discussion of the polynomial.

+ +

+One thing that we want to stress here is that changing the polynomial changes the field, so fields with different +polynomialsmay not be used interchangeably. So long as the polynomial is irreducible, it generates a Galois Field that +is isomorphic to all other Galois Fields; however the multiplication and division of elements will differ. For example, +the polynomials 0x13 (the default) and 0x19 in GF(24) are both irreducible, so both generate valid Galois Fields. +However, their multiplication differs:


+ +
+UNIX> gf_mult 8 2 4 -p 0x13 -
+3
+UNIX> gf_mult 8 2 4 -p 0x19 -
+9
+
+ + + + + + + + + +
+ +6     THE DEFAULTS 17


+ +
+UNIX> gf_div 3 8 4 -p 0x13 -
+2
+UNIX> gf_div 9 8 4 -p 0x19 -
+2
+UNIX>
+ +
+ + +

6.1.3     Changing the Multiplication Technique

+The following list describes the multiplication techinques that may be changed with "-m". We keep the description +here brief. Please refer to The Paper for detailed descriptions of these techniques.

+ + +
  • "TABLE:" Multiplication and division are implemented with tables. The tables consume quite a bit of memory +(2w × 2 w × w/ +8 bytes), so they are most useful when w is small. Please see "SSE," "LAZY," "DOUBLE" and + +"QUAD" under region techniques below for further modifications to "TABLE" to perform multiply_region()

    • + + +
  • "LOG:" This employs discrete (or "Zeph") logarithm tables to implement multiplication and division. The +memory usage is roughly (3 × 2w × w / +8 bytes), so they are most useful when w is small, but they tolerate +larger w than "TABLE." If the polynomial is not primitive (see section 6.1.2), then you cannot use "LOG" as +an implementation. In that case, gf_init_hard() or create_gf_from_argv() will fail

    • + + +
  • "LOG_ZERO:" Discrete logarithm tables which include extra room for zero entries. This more than doubles +the memory consumption to remove an if statement (please see [GMS08] or The Paper for more description). It +doesn’t really make a huge deal of difference in performance

    • + +
  • "LOG_ZERO_EXT:" This expends even more memory to remove another if statement. Again, please see The +Paper for an explanation. As with "LOG_ZERO," the performance difference is negligible

    • + +
  • "SHIFT:" Implementation straight from the definition of Galois Field multiplication, by shifting and XOR-ing, +then reducing the product using the polynomial. This is slooooooooow, so we don’t recommend you use it

    • + + +
  • "CARRY_FREE:" This is identical to "SHIFT," however it leverages the SSE instruction PCLMUL to perform +carry-freemultiplications in single instructions. As such, it is the fastest way to perform multiplication for large +values of w when that instruction is available. Its performance depends on the polynomial used. See The Paper +for details, and see section 7.7 below for the speedups available when w = 16 and w = 32 if you use a different +polynomial than the default one

    • + + +
  • "BYTWO_p:" This implements multiplication by successively multiplying the product by two and selectively +XOR-ing the multiplicand. See The Paper for more detail. It can leverage Anvin’s optimization that multiplies +64 and 128 bits of numbers in GF(2w) by two with just a few instructions. The SSE version requires SSE2

    • + + +
  • "BYTWO_b:" This implements multiplication by successively multiplying the multiplicand by two and selectively +XOR-ing it into the product. It can also leverage Anvin's optimization, and it has the feature that when +you're multiplying a region by a very small constant (like 2), it can terminate the multiplication early. As such, +if you are multiplying regions of bytes by two (as in the Linux RAID-6 Reed-Solomon code [Anv09]), this is +the fastest of the techniques, regardless of the value of w. The SSE version requires SSE2

    • + + +
  • "SPLIT:" Split multiplication tables (like the LR tables in [GMS08], or the SIMD tables for w ≤ 8 in [LHy08, +Anv09, PGM13b]). This argument must be followed by two more arguments, wa and wb, which are the index +sizes of the sub-tables. This implementation reduces the size of the table from "TABLE," but requires multiple +

    • + + + + + + +
    + +6     THE DEFAULTS 18


    +
      +table lookups. For example, the following multiplies 100 and 200 in GF(28) using two 4K tables, as opposed +to one 64K table when you use "TABLE:"

      +
      +UNIX> ./gf_mult 100 200 8 -m SPLIT 8 4 -
      +79
      +UNIX>

      +
      + +See section 7.4 for additional information on the arguments to "SPLIT." The SSE version typically requires +SSSE3.

      + + +
    • "GROUP:" This implements the "left-to-right comb" technique [LBOX12]. I'm afraid we don't like that name, +so we call it "GROUP," because it performs table lookup on groups of bits for shifting (left) and reducing (right). +It takes two additional arguments - gs, which is the number of bits you use while shifting (left) and gr, which +is the number of bits you use while reducing (right). Increasing these arguments can you higher computational +speed, but requires more memory. SSE version exists only for w = 128 and it requires SSE4. For more +description on the arguments gs and gr, see section 7.5. For a full description of "GROUP" algorithm, please +see The Paper. +

      • + +
    • "COMPOSITE:" This allows you to perform operations on a composite Galois Field, GF((2l)k) as described +in [GMS08], [LBOX12] and The Paper. The field size w is equal to lk. It takes one argument, which is k, and +then a specification of the base field. Currently, the only value of k that is supported is two. However, that may +change in a future revision of the library.

      • + + +In order to specify the base field, put appropriate flags after specifying k. The single dash ends the base field, +and after that, you may continue making specifications for the composite field. This process can be continued +for multiple layers of "COMPOSITE." As an example, the following multiplies 1000000 and 2000000 +in GF((216)2), where the base field uses BYTWO_p for multiplication:

      +
      ./gf_mult 1000000 2000000 32 -m COMPOSITE 2 -m BYTWO_p - -

      + +In the above example, the red text applies to the base field, and the black text applies to the composite field. +Composite fields have two defining polynomials - one for the composite field, and one for the base field. Thus, if +you want to change polynomials, you should change both. The polynomial for the composite field must be of the +form x2+sx+1, where s is an element of GF(2k). To change it, you specify s (in hexadecimal)with "-p." In the +example below, we multiply 20000 and 30000 in GF((28)2) , setting s to three, and using x8+x4+x3+x2+1 +as the polynomial for the base field:

      + +
      ./gf_mult 20000 30000 16 -m COMPOSITE 2 -p 0x11d - -p 0x3 -


      + +If you use composite fields, you should consider using "ALTMAP" as well. The reason is that the region +operations will go much faster. Please see section 7.6.

      +As with changing the polynomial, when you use a composite field, GF((2l)k), you are using a different field +than the "standard" field for GF((2l)k). All Galois Fields are isomorphic to each other, so they all have the +desired properties; however, the fields themselves change when you use composite fields.

      +
    +

    +With the exception of "COMPOSITE", only one multiplication technique can be provided for a given Galois +Field instance. Composite fields may use composite fields as their base fields, in which case the specification will be +recursive.

    + + + + + + + + +
    + +6     THE DEFAULTS 19


    + +

    6.1.4       Changing the Division Technique

    + +There are two techniques for division that may be set with "-d". If "-d" is not specified, then appropriate defaults +are employed. For example, when the multiplication technique is "TABLE," a table is created for division as well as +multiplication. When "LOG" is specified, the logarithm tables are used for division. With "COMPOSITE," a special +variant of Euclid's algorithm is employed that performs division using multiplication and division in the base field. +Otherwise, Euclid's algorithm is used. Please see The Paper for a description of Euclid's algorithm applied to Galois +Fields. + +

    If you use "-d", you must also specify the multiplication technique with "-m."

    +

    To force Euclid's algorithm instead of the defaults, you may specify it with "-d EUCLID." If instead, you would +rather convert elements of a Galois Field to a binary matrix and find an element's inverse by inverting the matrix, +then specify "-d MATRIX." In all of our tests, "MATRIX" is slower than "EUCLID." "MATRIX" is also not defined +for w > 32. +

    + + +

    6.1.5     Changing the Region Technique

    +The following are the region multiplication options ("-r"): +
      +
    • +"SSE:" Use SSE instructions. Initialization will fail if the instructions aren't supported. Table 2 details the +multiplication techniques which can leverage SSE instructions and which versions of SSE are required.

      • + +
      +
      + + + + + + + + + + + + + + + + + + + + +
      Multiplication
      Technique      		multiply() multiply_region() SSE Version Comments
      "TABLE"- YesSSSE3Only for GF(24).
      "SPLIT"-YesSSSE3Only when the second argument equals 4.
      "SPLIT"- YesSSE4When w = 64 and not using "ALTMAP".
      "BYTWO_p"- YesSSE2
      "BYTWO_p"- YesSSE2


      +Table 2: Multiplication techniques which can leverage SSE instructions when they are available. +


      + + + + + + + + + + + + +
    • "NOSSE:" Force non-SSE version

      • + +
    • "DOUBLE:" Use a table that is indexed on two words rather than one. This applies only to w = 4, where +the table is indexed on bytes rather than 4-bit quantities, and to w = 8, where the table is indexed on shorts +rather than bytes. In each case, the table lookup performs two multiplications at a time, which makes region +multiplication faster. It doubles the size of the lookup table.

      • + +
    • "QUAD:" Use a table that is indexed on four words rather than two or one. This only applies to w = 4, where +the table is indexed on shorts. The "Quad" table may be lazily created or created ahead of time (the default). If +the latter, then it consumes 24 × 216 × 2 = 2 MB of memory.

      • + +
    • "LAZY:" Typically it's clear whether tables are constructed upon initialization or lazily when a region operation +is performed. There are two times where it is ambiguous: "QUAD" when w = 4 and "DOUBLE" when w = 8. +If you don't specify anything, these tables are created upon initialization, consuming a lot of memory. If you +specify "LAZY," then the necessary row of the table is created lazily when you call "multiply_region(). +
      • + +
    + + + + + + + + + + + +
    + +6     THE DEFAULTS 20


    +
      + +
    • "ALTMAP:" Use an alternate mapping, where words are split across different subregions of memory. There +are two places where this matters. The first is when implementing "SPLIT w 4" using SSE when w > 8. In +these cases, each byte of the word is stored in a different 128-bit vector, which allows the implementation to +better leverage 16-byte table lookups. See section 7.4 for examples, and The Paper or [PGM13b] for detailed +explanations.

      • + +The second place where it matters is when using "COMPOSITE." In this case, it is advantageous to split each +memory region into two chunks, and to store half of each word in a different chunk. This allows us to call +region_multiply() recursively on the base field, which is much faster than the alternative. See Section 7.6 for +examples, and The Paper for an explanation.

      + +It is important to note that with "ALTMAP," the words are not "converted" from a standard mapping to an +alternate mapping and back again. They are assumed to always be in the alternate mapping. This typically +doesn't matter, so long as you always use the same "ALTMAP" calls. Please see section 7.9 for further details +on "ALTMAP," especially with respect to alignment.

      + +
    • "CAUCHY:" Break memory into w subregions and perform only XOR's as in Cauchy Reed-Solomon coding +[BKK+95] (also described in The Paper). This works for any value of w ≤ 32, even those that are not +powers of two. If SSE2 is available, then XOR's work 128 bits at a time. For "CAUCHY" to work correctly, +size must be a multiple of w .
    + + + +

    It is possible to combine region multiplication options. This is fully supported as long as gf_methods has the combination +listed. If multiple region options are required, they should be specified independently (as flags for gf_init_hard() +and independent options for command-line tools and create_gf_from_argv()).

    + + +

    6.2    Determining Supported Techniques with gf_methods

    + + +The program gf_methods prints a list of supported methods on standard output. It is called as follows:

    +
    +
    ./gf_methods w -BADC -LUMDRB

    + +The first argument is w , which may be any legal value of w . The second argument has the following flags:

    +
      + +
    • "B:" This only prints out "basic" methods that are useful for the given value of w . It omits "SHIFT" and other +methods that are never really going to be useful.

      • + +
    • "A:" In constrast, this specifies to print "all" methods.

      • + +
    • "D:" This includes the "EUCLID" and "MATRIX" methods for division. By default, they are not included.

      • + +
    • "C:" This includes the "CAUCHY" methods for region multiplication. By default, it is not included.

      • +
    +

    +You may specify multiple of these as the second argument. If you include both "B" and "A," then it uses the last +one specified.

    +

    +The last argument determines the output format of gf_methods. If it is "L," then it simply lists methods. If it +is "U," then the output contains gf_unit commands for each of the methods. For the others, the output contains +gf_time_tool.sh commands for M ultiplication,Division,Region multiplications with multiple buffer sizes, and the +Best region multiplication.

    +

    +gf_methods enumerates combinations of flags, and calls create_gf_from_argv() to see if the combinations are +supported. Although it enumerates a large number of combinations, it doesn't enumerate all possible parameters for +"SPLIT," "GROUP" or "COMPOSITE."

    + +

    Some examples of calling gf_methods are shown below in section 6.3.2.

    + + + + + + + +
    + +6     THE DEFAULTS 21


    + + +

    6.3 Testing with gf_unit , gf_time , and time_tool.sh

    + + + +gf_unit and gf_time may be used to verify that a combination of arguments works correctly and efficiently on your +platform. If you plan to stray from the defaults, it is probably best to run both tools to ensure there are no issues with +your environment. gf_unit will run a set of unit tests based on the arguments provided to the tool, and gf_time will +time Galois Field methods based on the provided arguments.
    +The usage of gf_ unit is:

    +
    +gf_unit w tests seed method

    +The usage of gf_ time is:

    +
    +gf_time w tests seed buffer-size iterations method

    +
    + + + +The seed is an integer- negative one uses the current time. The tests are specified by a listing of characters. The +following tests are supported (All are supported by gf_time. Only ', 'S' and 'R' are supported by gf_unit):

    + +
      +
    • 'M': Single multiplications

      • +
    • 'D': Single divisions

      • +
    • 'I': Single inverses

      • +
    • 'G': Region multiplication of a buffer by a random constant

      • +
    • '0': Region multiplication of a buffer by zero (does nothing andbzero())

      • +
    • '1': Region multiplication of a buffer by one (does memcpy() and XOR)

      • +
    • '2': Region multiplication of a buffer by two – sometimes this is faster than general multiplication

      • +
    • 'S': All three single tests

      • +
    • 'R': All four region tests

      • +
    • 'A': All seven tests

      • +
    + + + + + +

    Here are some examples of calling gf_unit and gf_time to verify that "-m SPLIT 32 4 -r ALTMAP -" works +in GF(232), and to get a feel for its performance. First, we go to the test directory and call gf_unit:



    + + +
    +UNIX> cd test
    +UNIX> ./gf_unit 32 A -1 -m SPLIT 32 4 -r ALTMAP -
    +Args: 32 A -1 -m SPLIT 32 4 -r ALTMAP - / size (bytes): 684
    +UNIX>

    +
    + +gf_unit reports on the arguments and how may bytes the gf_t consumes. If it discovers any problems or inconsistencies +with multiplication, division or region multiplication, it will report them. Here, there are no problems. +Next, we move to the tools directory and run performance tests on a 10K buffer, with 10,000 iterations of each test:

    + + +UNIX> cd ../tools
    +UNIX> ./gf_time 32 A -1 10240 10000 -m SPLIT 32 4 -r ALTMAP -
    +Seed: 1388435794
    +
    + + + + + + + + + + + + +
    Multiply: 4.090548 s Mops: 24.414 5.968 Mega-ops/s
    Divide: 37.794962 s Mops: 24.414 0.646 Mega-ops/s
    Inverse: 33.709875 s Mops: 24.414 0.724 Mega-ops/s
    Region-Random: XOR: 0 0.035210 s MB: 97.656 2773.527 MB/s
    Region-Random: XOR: 1 0.036081 s MB: 97.656 2706.578 MB/s
    Region-By-Zero:XOR: 0 0.003199 s MB: 97.656 30523.884 MB/s
    Region-By-Zero: XOR: 1 0.000626 s MB: 97.656 156038.095 MB/s
    +
    + + + + + + + + + + +
    + +6     THE DEFAULTS 22


    + +
    + + + + + + + +
    Region-By-One: XOR: 0 0.003810 s MB: 97.656 25628.832 MB/s
    Region-By-One: XOR: 1 0.008363 s MB: 97.656 11677.500 MB/s
    Region-By-Two: XOR: 0 0.032942 s MB: 97.656 2964.486 MB/s
    Region-By-Two: XOR: 1 0.033488 s MB: 97.656 2916.153 MB/s
    +
    +UNIX>

    + +

    The first column of output displays the name of the test performed. Region tests will test with and without the XOR +flag being set (see Section 4.3 for an example). The second column displays the total time the test took to complete +measured in seconds (s). The third column displays the size of the test measured in millions of operations (Mops) for +single tests and in Megabytes (MB) for the region tests. The final column displays the speed of the tests calculated +from the second and third columns, and is where you should look to get an idea of a method's performance.

    +

    +If the output of gf_unit and gf_time are to your satisfaction, you can incorporate the method into application code +using create gf_from_argv() or gf_init hard().

    +

    +The performance of "Region-By-Zero" and "Region-By-One" will not change from test to test, as all methods make +the same calls for these. "Region-By-Zero" with "XOR: 1" does nothing except set up the tests. Therefore, you may +use it as a control.

    + +

    6.3.1       time_tool.sh

    + +Finally, the shell script time_tool.sh makes a bunch of calls to gf_time to give a rough estimate of performance. It is +called as follows:

    +usage sh time_tool.sh M|D|R|B w method

    + + +

    The values for the first argument are MDRB, for Multiplication, Division,Region multiplications with multiple +buffer sizes, and the Best region multiplication. For the example above, let's call time_tool.sh to get a rough idea of +performance:



    + +
    +UNIX> sh time_tool.sh M 32 -m SPLIT 32 4 -r ALTMAP -
    +M speed (MB/s): 6.03 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    +UNIX> sh time_tool.sh D 32 -m SPLIT 32 4 -r ALTMAP -
    +D speed (MB/s): 0.65 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    +UNIX> sh time_tool.sh R 32 -m SPLIT 32 4 -r ALTMAP -
    + + + + + + + + + + + + + +
    Region Buffer-Size: 16K (MB/s): 3082.91 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 32K (MB/s): 3529.07 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 64K (MB/s): 3749.94 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 128K (MB/s): 3861.27 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 512K (MB/s): 3820.82 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 1M (MB/s): 3737.41 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 2M (MB/s): 3002.90 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Buffer-Size: 4M (MB/s): 2760.77 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    Region Best (MB/s): 3861.27 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    + +UNIX> sh time_tool.sh B 32 -m SPLIT 32 4 -r ALTMAP -
    +Region Best (MB/s): 3929.09 W-Method: 32 -m SPLIT 32 4 -r ALTMAP -
    +UNIX>

    +
    +

    +We say that time_tool.sh is "rough" because it tries to limit each test to 5 ms or less. Thus, the time granularity +is fine, which means that the numbers may not be as precise as they could be were the time granularity to be course. +When in doubt, you should make your own calls to gf_time with a lot of iterations, so that startup costs and roundoff +error may be minimized.

    + + + + + + + + +
    + +6     THE DEFAULTS 23


    + +

    6.3.2       An example of gf_methods and time_tool.sh



    +Let's give an example of how some of these components fit together. Suppose we want to explore the basic techniques +in GF(232). First, let's take a look at what gf_methods suggests as "basic" methods:

    +
    +UNIX> gf_methods 32 -B -L
    +w=32: -
    +w=32: -m GROUP 4 8 -
    +w=32: -m SPLIT 32 4 -
    +w=32: -m SPLIT 32 4 -r ALTMAP -
    +w=32: -m SPLIT 32 8 -
    +w=32: -m SPLIT 8 8 -
    +w=32: -m COMPOSITE 2 - -
    +w=32: -m COMPOSITE 2 - -r ALTMAP -
    +UNIX>

    +
    + + +

    + +You'll note, this is on my old Macbook Pro, which doesn't support (PCLMUL), so "CARRY_FREE" is not included +as an option. Now, let's run the unit tester on these to make sure they work, and to see their memory consumption:



    + +
    +UNIX> gf_methods 32 -B -U
    +../test/gf_unit 32 A -1 -
    +../test/gf_unit 32 A -1 -m GROUP 4 8 -
    +../test/gf_unit 32 A -1 -m SPLIT 32 4 -
    +../test/gf_unit 32 A -1 -m SPLIT 32 4 -r ALTMAP -
    +../test/gf_unit 32 A -1 -m SPLIT 32 8 -
    +../test/gf_unit 32 A -1 -m SPLIT 8 8 -
    +../test/gf_unit 32 A -1 -m COMPOSITE 2 - -
    +../test/gf_unit 32 A -1 -m COMPOSITE 2 - -r ALTMAP -
    +UNIX> gf_methods 32 -B -U | sh
    +Args: 32 A -1 - / size (bytes): 684
    +Args: 32 A -1 -m GROUP 4 8 - / size (bytes): 1296
    +Args: 32 A -1 -m SPLIT 32 4 - / size (bytes): 684
    +Args: 32 A -1 -m SPLIT 32 4 -r ALTMAP - / size (bytes): 684
    +Args: 32 A -1 -m SPLIT 32 8 - / size (bytes): 4268
    +Args: 32 A -1 -m SPLIT 8 8 - / size (bytes): 1839276
    +Args: 32 A -1 -m COMPOSITE 2 - - / size (bytes): 524648
    +Args: 32 A -1 -m COMPOSITE 2 - -r ALTMAP - / size (bytes): 524648
    +UNIX>

    +
    +

    +As anticipated, "SPLIT 8 8" consumes quite a bit of memory! Now, let's see how well they perform with both +single multiplications and region multiplications:



    +
    +UNIX> gf_methods 32 -B -M
    +sh time_tool.sh M 32 -
    +sh time_tool.sh M 32 -m GROUP 4 8 -
    +sh time_tool.sh M 32 -m SPLIT 32 4 -
    +sh time_tool.sh M 32 -m SPLIT 32 4 -r ALTMAP -
    +sh time_tool.sh M 32 -m SPLIT 32 8 -
    +sh time_tool.sh M 32 -m SPLIT 8 8 -
    + +
    + + + + + + + + +
    + +6     THE DEFAULTS 24


    + +
    +sh time_tool.sh M 32 -m COMPOSITE 2 -
    +sh time_tool.sh M 32 -m COMPOSITE 2 - -r ALTMAP
    +UNIX> gf_methods 32 -B -M | sh +M speed (MB/s): 5.90 W-Method: 32
    +M speed (MB/s): 14.09 W-Method: 32 -m GROUP 4 8
    +M speed (MB/s): 5.60 W-Method: 32 -m SPLIT 32 4
    +M speed (MB/s): 5.19 W-Method: 32 -m SPLIT 32 4 -r ALTMAP
    +M speed (MB/s): 5.98 W-Method: 32 -m SPLIT 32 8
    +M speed (MB/s): 22.10 W-Method: 32 -m SPLIT 8 8
    +M speed (MB/s): 34.98 W-Method: 32 -m COMPOSITE 2 -
    +M speed (MB/s): 34.16 W-Method: 32 -m COMPOSITE 2 - -r ALTMAP
    +UNIX> gf_methods 32 -B -B | sh +Region Best (MB/s): 2746.76 W-Method: 32
    +Region Best (MB/s): 177.06 W-Method: 32 -m GROUP 4 8
    +Region Best (MB/s): 2818.75 W-Method: 32 -m SPLIT 32 4
    +Region Best (MB/s): 3818.21 W-Method: 32 -m SPLIT 32 4 -r ALTMAP
    +Region Best (MB/s): 728.68 W-Method: 32 -m SPLIT 32 8
    +Region Best (MB/s): 730.97 W-Method: 32 -m SPLIT 8 8
    +Region Best (MB/s): 190.20 W-Method: 32 -m COMPOSITE 2 -
    +Region Best (MB/s): 1837.99 W-Method: 32 -m COMPOSITE 2 - -r ALTMAP
    +UNIX> +
    +

    +The default is quite a bit slower than the best performing methods for both single and region multiplication. So +why are the defaults the way that they are? As detailed at the beginning of this chapter, we strive for lower memory +consumption, so we don't use "SPLIT 8 8," which consumes 1.75MB.We don't implement alternate fields by default, +which is why we don't use "COMPOSITE." Finally, we don't implement alternate mappings of memory by default, +which is why we don't use "-m SPLIT 32 4 -r ALTMAP -."

    + +

    Of course, you may change these defaults if you please.

    +

    +Test question: Given the numbers above, it would appear that "COMPOSITE" yields the fastest performance of +single multiplication, while "SPLIT 32 4" yields the fastest performance of region multiplication. Should I use two +gf_t's in my application – one for single multiplication that uses "COMPOSITE," and one for region multiplication +that uses "SPLIT 32 4?"

    +

    +The answer to this is "no." Why? Because composite fields are different from the "standard" fields, and if you mix +these two gf_t's, then you are using different fields for single multiplication and region multiplication. Please read +section 7.2 for a little more information on this.

    + +

    6.4      Calling gf_init_hard()

    + +We recommend that you use create_gf_from_argv() instead of gf_init_hard(). However, there are extra things that +you can do with gf_init_hard(). Here's the prototype:

    +
    +int gf_init_hard(gf_t *gf
    +
    +int w
    +int mult_type
    +int region_type
    +int divide_type
    +uint64_t prim_poly
    +int arg1
    +int arg2
    +
    +
    + + + + + + + + +
    + +6     THE DEFAULTS 25


    +
    +
    +GFP base_gf,
    +void *scratch_memory);


    + + +The arguments mult type, region type and divide type allow for the same specifications as above, except the +types are integer constants defined in gf_complete.h:

    +typedef enum {GF_MULT_DEFAULT,
    +
    +GF_MULT_SHIFT
    +GF_MULT_CARRY_FREE
    +GF_MULT_GROUP
    +GF_MULT_BYTWO_p
    +GF_MULT_BYTWO_b
    +GF_MULT_TABLE
    +GF_MULT_LOG_TABLE
    +GF_MULT_LOG_ZERO
    +GF_MULT_LOG_ZERO_EXT
    +GF_MULT_SPLIT_TABLE
    +GF_MULT_COMPOSITE } gf_mult_type_t;

    + +
    + +#define GF_REGION_DEFAULT (0x0)
    +#define GF_REGION_DOUBLE_TABLE (0x1)
    +#define GF_REGION_QUAD_TABLE (0x2)
    +#define GF_REGION_LAZY (0x4)
    +#define GF_REGION_SSE (0x8)
    +#define GF_REGION_NOSSE (0x10)
    +#define GF_REGION_ALTMAP (0x20)
    +#define GF_REGION_CAUCHY (0x40)

    +typedef enum { GF_DIVIDE_DEFAULT
    +
    GF_DIVIDE_MATRIX
    +GF_DIVIDE_EUCLID } gf_division_type_t;

    +
    +
    +

    +You can mix the region types with bitwise or. The arguments to GF_MULT_GROUP,GF_MULT_SPLIT_TABLE +and GF_MULT_COMPOSITE are specified in arg1 and arg2. GF_MULT_COMPOSITE also takes a base field +in base_gf. The base field is itself a gf_t, which should have been created previously with create_gf_fro_argv(), +gf_init_easy() or gf_init_hard(). Note that this base_gf has its own base_gf member and can be a composite field +itself.

    +

    +You can specify an alternate polynomial in prim_poly. For w ≤ 32, the leftmost one (the one in bit position w) is +optional. If you omit it, it will be added for you. For w = 64, there's no room for that one, so you have to leave it off. +For w = 128, your polynomial can only use the bottom-most 64 bits. Fortunately, the standard polynomial only uses +those bits. If you set prim_poly to zero, the library selects the "standard" polynomial. +

    +

    +Finally, scratch_memory is there in case you don't want gf_init_hard() to call malloc(). Youmay call gf_scratch_size() +to find out how much extra memory each technique uses, and then you may pass it a pointer for it to use in scratc_memory. +If you set scratch memory to NULL, then the extra memory is allocated for you with malloc(). If you use gf_init_easy() +or create_gf_from_argv(), or you use gf_init_hard() and set scratch_memory to NULL, then you should call gf_free() +to free memory. If you use gf_init_hard() and use your own scratch_memory you can still call gf_free(), and it will +not do anything.

    +

    +Both gf_init_hard() and gf_scratch_size() return zero if the arguments don't specify a valid gf_t. When that happens, +you can call gf_error() to print why the call failed.

    + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 26


    + + +

    We'll give you one example of calling gf_ init_hard(). Suppose you want to make a gf_ init_hard() call to be +equivalent to "-m SPLIT 16 4 -r SSE -r ALTMAP -" and you want to allocate the scratch space yourself. Then you'd +do the following:



    + +
    +gf_t gf;
    +void *scratch;
    +int size;
    +size = gf_scratch_size(16, GF_MULT_SPLIT_TABLE,
    +GF_REGION_SSE | GF_REGION_ALTMAP,
    +GF_DIVIDE_DEFAULT,
    +16, 4);
    +if (size == 0) { gf_error(); exit(1); } /* It failed. That shouldn’t happen */
    +scratch = (void *) malloc(size);
    +if (scratch == NULL) { perror("malloc"); exit(1); }
    +if (!gf_init_hard(&gf, 16, GF_MULT_SPLIT_TABLE,
    +GF_REGION_SSE | GF_REGION_ALTMAP,
    +GF_DIVIDE_DEFAULT,
    +0, 16, 4, NULL, scratch)) {
    +gf_error();
    +exit(1);
    +}
    + +
    + + +

    6.5     gf_size()

    + +You can call gf_size(gf_t *gf) to learn the memory consumption of the gf_t. It returns all memory consumed by the +gf_t, including the gf_t itself, any scratch memory required by the gf_ t, and the memory consumed by the sub-field +if the field is "COMPOSITE." If you provided your own memory to gf_init_hard(), it does not report the size of +this memory, but what the size should be, as determined by gf_scratch size(). gf_ unit() prints out the return value of +gf_size() on the given field. + + +

    7   Further Information on Options and Algorithms

    +

    +7.1   Inlining Single Multiplication and Division for Speed

    + +Obviously, procedure calls are more expensive than single instructions, and the mechanics of multiplication in "TABLE" +and "LOG" are pretty simple. For that reason, we support inlining for "TABLE" when w = 4 and w = 8, and +for "LOG" when w = 16. We elaborate below. +

    +When w = 4, you may inline multiplication and division as follows. The following procedures return pointers to +the multiplication and division tables respectively:



    + +
    +uint8_t *gf_w4_get_mult_table(gf_t * gf);
    +uint8_t *gf_w4_get_div_table(gf_t * gf);

    +
    +

    The macro Gf_W4_INLINE_MULTDIV (table, a, b) then multiplies or divides a by b using the given table. This +of course only works if the multiplication technique is "TABLE," which is the default for w = 4. If the multiplication +technique is not "TABLE," then gf_w4_get_mult_table() will return NULL.

    + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 27


    + + + + +

    When w = 8, the procedures gf_w8_et_mult_table() and gf_ w8_get_div_table(), and the macro

    + +GF_W8_INLINE_MULTDIV (table, a, b) work identically to the w = 4 case. + +

    When w = 16, the following procedures return pointers to the logarithm table, and the two inverse logarithm tables +respectively:


    + +
    +uint16_t *gf_w16_get_log_table(gf_t * gf);
    +uint16_t *gf_w16_get_mult_alog_table(gf_t * gf);
    +uint16_t *gf_w16_get_div_alog_table(gf_t * gf);
    + +
    +
    +

    +The first inverse logarithm table works for multiplication, and the second works for division. They actually point +to the same table, but to different places in the table. You may then use the macro GF_W16_INLINE_MULT(log, +alog, a, b ) to multiply a and b, and the macro GF_W16_INLINE_DIV (log, alog, a, b ) to divide a and b. Make +sure you use the alog table returned by gf_w16_get_mult_alog_table() for multiplication and the one returned by +gf_w16_get_div_alog_table() for division. Here are some timings:



    + + +UNIX> gf_time 4 M 0 10240 10240 -
    +Seed: 0
    +Multiply: 0.228860 s Mops: 100.000 436.949 Mega-ops/s
    +UNIX> gf_inline_time 4 0 10240 10240
    +Seed: 0
    +Inline mult: 0.096859 s Mops: 100.000 1032.424 Mega-ops/s
    +UNIX> gf_time 8 M 0 10240 10240 -
    +Seed: 0
    +Multiply: 0.228931 s Mops: 100.000 436.812 Mega-ops/s
    +UNIX> gf_inline_time 8 0 10240 10240
    +Seed: 0
    +Inline mult: 0.114300 s Mops: 100.000 874.889 Mega-ops/s
    +UNIX> gf_time 16 M 0 10240 10240 -
    +Seed: 0
    +Multiply: 0.193626 s Mops: 50.000 258.229 Mega-ops/s
    +UNIX> gf_inline_time 16 0 10240 10240
    +Seed: 0
    +Inline mult: 0.310229 s Mops: 100.000 322.342 Mega-ops/s
    +UNIX>

    + +

    +7.2     Using different techniques for single and region multiplication

    + + +You may want to "mix and match" the techniques. For example, suppose you'd like to use "-m SPLIT 8 8" for +multiply() in GF(232), because it's fast, and you don't mind consuming all of that space for tables. However, for +multiply_region(), you'd like to use "-m SPLIT 32 4 -r ALTMAP," because that's the fastest way to implement +multiply_region(). Unfortunately, There is no way to create a gf_t that does this combination. In this case, you should +simply create two gf_t's, and use one for multiply() and the other for multiply_region(). All of the implementations +may be used interchangably with the following exceptions: + +
      +
    • +"COMPOSITE" implements a different Galois Field.

      • + +
    • If you change a field's polynomial, then the resulting Galois Field will be different.
      • + +
    + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 28


    + +
      +
    • + +If you are using "ALTMAP" to multiply regions, then the contents of the resulting regions of memory will +depend on the multiplication technique, the size of the region and its alignment. Please see section 7.9 for a +detailed explanation of this.
      • + +
    • If you are using "CAUCHY" to multiply regions, then like "ALTMAP," the contents of the result regions of +memory the multiplication technique and the size of the region. You don't have to worry about alignment.
      • + +

      7.3     General w

      +The library supports Galois Field arithmetic with 2 < w ≤ 32. Values of w which are not whole number powers of +2 are handled by the functions in gf_wgen.c . For these values of w , the available multiplication types are "SHIFT," +"BYTw O p," "BYTw O b," "GROUP," "TABLE" and "LOG." "LOG" is only valid for w < 28 and "TABLE" + +is only valid for w < 15. The defaults for these values of w are "TABLE" for w < 8, "LOG" for w < 16, and +"BYTw O p" for w < 32.

      + +

      7.4 Arguments to "SPLIT"

      + +The "SPLIT" technique is based on the distributive property of multiplication and addition:

      +
      +a * (b + c) = (a * b) + (a * c).
      +
      +This property allow s us to, for example, split an eight bit w ord into tw o four-bit components and calculate the product +by performing tw o table lookups in 16-element tables on each of the compoents, and adding the result. There is much +more information on "SPLIT" in The Paper. Here w e describe the version of "SPLIT" implemented in GF-Complete. + +

      +"SPLIT" takes tw o arguments, w hich are the number of bits in each component of a, w hich w e call w a, and the +number of bits in each component of b, w hich w e call w b. If the tw o differ, it does not matter w hich is bigger - the +library recognizes this and performs the correct implementation. The legal values of w a and w b fall into five categories: +


      + + +
        +
      1. + w a is equal to w and w b is equal to four. In this case, b is broken up into w /4 +four-bit w ords w hich are used +in 16-element lookup tables. The tables are created on demand in multiply_region() and the SSSE3 instruction + +mm_shuffle_epi8() is leveraged to perform 16 lookups in parallel. Thus, these are very fast implementations. +w hen w ≥ 16, you should combine this w ith "ALTMAP" to get the best performance (see The Paper +or [PGM13b] for explanation). If you do this please see section 7.9 for information about "ALTMAP" and +alignment.

        + + +If you don't use "ALTMAP," the implementations for w ∈ {16, 32, 64} convert the standard representation into +"ALTMAP," perform the multiplication w ith "ALTMAP" and then convert back to the standard representation. +The performance difference using "ALTMAP" can be significant:


        + +
        +
        +
        + + + + + + + + + + + + + + + + + + + + + + + + + + + +
        gf_time 16 G 0 1048576 100 -m SPLIT 16 4 - Speed = 8,389 MB/s
        gf_time 16 G 0 1048576 100 -m SPLIT 16 4 -r ALTMAP - Speed = 8,389 MB/s
        gf_time 32 G 0 1048576 100 -m SPLIT 32 4 - Speed = 5,304 MB/s
        gf_time 32 G 0 1048576 100 -m SPLIT 32 4 -r ALTMAP - Speed = 7,146 MB/s
        gf_time 64 G 0 1048576 100 -m SPLIT 64 4 - Speed = 2,595 MB/s
        gf_time 64 G 0 1048576 100 -m SPLIT 64 4 -r ALTMAP - Speed = 3,436 MB/s
        +
        + + + + + + + + + +
        + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 29


        + +
          + + +
        1. 2.   wa is equal to w and wb is equal to eight. Now, b is broken into bytes, each of these is used in its own 256-element +lookup table. This is typically the best way to perform multiply_region() without SSE.
          2. +Because this is a region optimization, when you specify these options, you get a default multiply() see +Table 1 for a listing of the defaults. See section 7.2 for using a different multiply() than the defaults.

          + + +
        2. +3.   wa is equal to w and w b is equal to 16. This is only valid for w = 32 and w = 64. Now , b is broken into shorts, +each of these is used in its own 64K-element lookup table. This is typically slower than when w b equals 8, and +requires more amortization (larger buffer sizes) to be effective.

          3. + + +
        3. 4.   w a and w b are both equal to eight. Now both a and b are broken into bytes, +and the products of the various bytes +are looked up in multiple 256 × 256 tables. In GF(216), there are three of these tables. In GF(232), there are +seven, and in GF(264) there are fifteen. Thus, this implementation can be a space hog. How ever, for w = 32, +this is the fastest way to perform multiply() on some machines. +when this option is employed, multiply_region() is implemented in an identical fashion to when w a = w +and w b = 8.

          4. + +
        4. 5.  wa = 32 and wb = 2. (w = 32 only). I was playing with a different way to use mm_shuffle_epi8(). It works, +but it's slower than when wb = 4. +
          5. + +
    + + + +

    7.5    Arguments to "GROUP"

    + +The "GROUP" multiplication option takes tw o arguments, gs and gr. It implements multiplication in the same manner +as "SHIFT," except it uses a table of size 2gs to perform gs shifts at a time, and a table of size 2gr to perform gr +reductions at at time. The program gf_methods only prints the options 4 4 and 4 8 as arguments for "GROUP." +However, other values of gs and gr are legal and sometimes desirable:

    + +
      +
    1. + For w ≤ 32 and w = 64, any values of gs and gr may be used, so long as they are less than or equal to w and so +long as the tables fit into memory. There are four exceptions to this, listed below .

      2. +
    2. For w = 4, "GROUP" is not supported.

      3. +
    3. For w = 8, "GROUP" is not supported.

      4. +
    4. For w = 16, "GROUP" is only supported for gs = gr = 4.

      5. +
    5. For w = 128 "GROUP" only supports gs = 4 and gr ∈ {4, 8, 16}.

      6. +
    +

    +The way that gs and gr impact performance is as follows. The "SHIFT" implementation works by performing a +carry-free multiplication in w steps, and then performing reduction in w steps. In "GROUP," the carry-free multiplication +is reduced to w /gssteps, and the reduction is reduced to w /gr + +. Both require tables. The table for the carry-free +multiplication must be created at the beginning of each multiply() or multiply_region(), while the table for reduction +is created when the gf_t is initialized. For that reason, it makes sense for gr to be bigger than gs.

    + +

    +To give a flavor for the impact of these arguments, Figure 3 show s the performance of varying gs and gr for +single multiplication and region multiplication respectively, in GF(232) and GF(264). As the graphs demonstrate, +multiply() performs better w ith smaller values of gs, w hile multiply region() amortizes the creation of the shifting +table, and can tolerate larger values of gs. w hen gs equals gr, there are some optimizations that we hand-encode. +These can be seen clearly in the multiply_region() graphs. +

    + + + + + + + + +
    +7     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 30 + + +
    + +
    + +
    +
    +Figure 3: The performance of multiply() and multiply_region() using "GROUP," and varying the arguments
    gs +and gr. All graphs are heat maps with black equaling zero. The region size is 100KB. + +

    7.6  Considerations with "COMPOSITE"

    + + +As mentioned above, using "ALTMAP" with "COMPOSITE" allows multiply_region() to recursively call multiply_ +region(), rather than simply calling multiply() on every word in the region. The difference can be pronounced:

    + +
    + + + + + + + + + +
    +gf_time 32 G 0 10240 10240 -m COMPOSITE 2 - - +Speed = 322 MB/s
    gf_time 32 G 0 10240 10240 -m COMPOSITE 2 - -r ALTMAP - +Speed = 3,368 MB/s
    +gf_time 32 G 0 10240 10240 -m COMPOSITE 2 -m SPLIT 16 4 -r ALTMAP - -r ALTMAP - +Speed = 3,925 MB/s
    +
    + + +

    +

    +There is support for performing multiply() inline for the "TABLE" implementations for w ∈ {4, 8} and for the +"LOG" implementation for w = 16 (see section 7.1). These are leveraged by multiply() in "COMPOSITE," and +by multiply_region() if you are not using "ALTMAP." To demonstrate this, in the table below, you can see that the +performance of multiply() with "SPLIT 8 4" is 88 percent as fast than the default in w = 8 (which is "TABLE"). +When you use each as a base field for "COMPOSITE" with w = 16, the one with "SPLIT 8 4" is now just 37 percent +as fast. The difference is the inlining of multiplication in the base field when "TABLE" is employed:



    + +
    + + + + + + + + +
    gf_time 8 M 0 1048576 100 - Speed = 501 Mega-ops/s
    gf_time 8 M 0 1048576 100 -m SPLIT 8 4 - Speed = 439 Mega-ops/s
    gf_time 8 M 0 1048576 100 -m COMPOSITE 2 - - Speed = 207 Mega-ops/s
    gf_time 8 M 0 1048576 100 -m COMPOSITE 2 -m SPLIT 8 4 - - Speed = 77 Mega-ops/s
    +
    +

    +
    + +You can keep making recursive definitions of composites field if you want. For example, this one's not too slow for +region operations (641 MB/s): + + + + + + + + +
    +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 31


    + +
    +
    +gf_time 128 G 0 1048576 100 -m COMPOSITE 2 -m COMPOSITE 2 -m COMPOSITE 2
    +-m SPLIT 16 4 -r ALTMAP - -r ALTMAP - -r ALTMAP - -r ALTMAP - +
    +

    + +

    Please see section 7.8.1 for a discussion of polynomials in composite fields.

    + +

    7.7       "CARRY_FREE" and the Primitive Polynomial

    + + +If your machine supports the PCLMUL instruction, then we leverage that in "CARRY_FREE." This implementation +first performs a carry free multiplication of two w-bit numbers, which yields a 2w-bit number. It does this with +one PCLMUL instruction. To reduce the 2w-bit number back to a w-bit number requires some manipulation of the +polynomial. As it turns out, if the polynomial has a lot of contiguous zeroes following its leftmost one, the number of +reduction steps may be minimized. For example, with w = 32, we employ the polynomial 0x100400007, because that +is what other libraries employ. This only has 9 contiguous zeros following the one, which means that the reduction +takes four steps. If we instead use 0x1000000c5, which has 24 contiguous zeros, the reduction takes just two steps. +You can see the difference in performance: +

    +
    +
    + + + + + + + + +
    gf_time 32 M 0 1048576 100 -m CARRY_FREE - Speed = 48 Mega-ops/s
    gf_time 32 M 0 1048576 100 -m CARRY_FREE -p 0xc5 - Speed = 81 Mega-ops/s
    + +

    + +

    +This is relevant for w = 16 and w = 32, where the "standard" polynomials are sub-optimal with respect to +"CARRY_FREE." For w = 16, the polynomial 0x1002d has the desired property. It’s less important, of course, +with w = 16, because "LOG" is so much faster than CARRY_FREE.

    + +

    7.8   More on Primitive Polynomials

    + +

    7.8.1   Primitive Polynomials that are not Primitive

    + +The library is willing to work with most polynomials, even if they are not primitive or irreducible. For example, the +polynomial x4 + x3 +x2 +x+1 is irreducible, and therefore generates a valid Galois Field for GF(24). However, it +is not primitive, because 25 = 1. For that reason, if you use this polynomial, you cannot use the "LOG" method. The +other methods will work fine:

    + +
    + +UNIX> gf_mult 2 2 4 -p 0xf -
    +4
    +UNIX> gf_mult 4 2 4 -p 0xf -
    +8
    +UNIX> gf_mult 8 2 4 -p 0xf -
    +15
    +UNIX> gf_mult 15 2 4 -p 0xf -
    +1
    +UNIX> gf_div 1 15 4 -p 0xf -
    +2
    +UNIX> gf_div 1 15 4 -p 0xf -m LOG -
    +usage: gf_div a b w [method] - does division of a and b in GF(2ˆw)
    +Bad Method Specification: Cannot use Log tables because the polynomial is not primitive.
    +UNIX>
    +
    +

    +If a polynomial is reducible, then it does not define a Galois Field, but instead a ring. GF-Complete attempts to +work here where it can; however certain parts of the library will not work: +

    + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 32


    +
      +
    1. +Division is a best effort service. The problemis that often quotients are not unique. If divide() returns a non-zero +number, then that number will be a valid quotient, but it may be one of many. If the multiplication technique is +"TABLE," then if a quotient exists, one is returned. Otherwise, zero is returned. Here are some examples - the +polynomial x4 + 1 is reducible, and therefore produces a ring. Below, we see that with this polynomal, 1*6 = 6 +and 14*6 = 6. Therefore, 6/6 has two valid quotients: 1 and 14. GF-Complete returns 14 as the quotient:

      2. + +
      +UNIX> gf_mult 1 6 4 -p 0x1 -
      +6
      +UNIX> gf_mult 14 6 4 -p 0x1 -
      +6
      +UNIX> gf_div 6 6 4 -p 0x1 -
      +14
      +UNIX>

      +
      + + +
    2. When "EUCLID" is employed for division, it uses the extended Euclidean algorithm for GCD to find a number's +inverse, and then it multiplies by the inverse. The problem is that not all numbers in a ring have inverses. For +example, in the above ring, there is no number a such that 6a = 1. Thus, 6 has no inverse. This means that even +though 6/6 has quotients in this ring, "EUCLID" will fail on it because it is unable to find the inverse of 6. It will +return 0: +

      3. +
      +UNIX> gf_div 6 6 4 -p 0x1 -m TABLE -d EUCLID -
      +0
      +UNIX>
      +

      + +
    3. Inverses only work if a number has an inverse. Inverses may not be unique.

      4. + +
    4. "LOG" will not work. In cases where the default would be "LOG," "SHIFT" is used instead.
      5. +
    + +

    +Due to problems with division, gf_unit may fail on a reducible polynomial. If you are determined to use such a +polynomial, don't let this error discourage you. +

    + +

    7.8.2 Default Polynomials for Composite Fields

    + +GF-Complete will successfully select a default polynomial in the following composite fields: +
      +
    • w = 8 and the default polynomial (0x13) is employed for GF(24)

      • +
    • w = 16 and the default polynomial (0x11d) is employed for GF(28)

      • +
    • w = 32 and the default polynomial (0x1100b) is employed for GF(216)

      • +
    • w = 32 and 0x1002d is employed for GF(216)

      • +
    • w = 32 and the base field for GF(w16) is a composite field that uses a default polynomial

      • +
    • w = 64 and the default polynomial (0x100400007) is employed for GF(232)

      • +
    • w = 64 and 0x1000000c5 is employed for GF(232)

      • +
    • w = 64 and the base field for GF(w32) is a composite field that uses a default polynomial

      • +
    • w = 128 and the default polynomial (0x1b) is employed for GF(264)

      • +
    • w = 128 and the base field for GF(w64 ) is a composite field that uses a default polynomial

      • +
    + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 33


    + + +

    7.8.3 The Program gf_poly for Verifying Irreducibility of Polynomials

    + +The program gf_poly uses the Ben-Or algorithm[GP97] to determine whether a polynomial with coefficients in GF(2w ) +is reducible. Its syntax is:

    +
    +gf_poly w method power:coef power:coef ... +
    + +
    +

    You can use it to test for irreducible polynomials with binary coefficients by specifying w = 1. For example, from +the discussion above, we know that x4 +x+1 and x4 +x3 +x2 +x+1 are both irreducible, but x4 +1 is reducible. +gf_poly confirms:


    + +

    +UNIX> gf_poly 1 - 4:1 1:1 0:1
    +Poly: xˆ4 + x + 1
    +Irreducible.
    +UNIX> gf_poly 1 - 4:1 3:1 2:1 1:1 0:1 +Poly: xˆ4 + xˆ3 + xˆ2 + x + 1
    +Irreducible.
    +UNIX> gf_poly 1 - 4:1 0:1 r
    +Poly: xˆ4 + 1
    +Reducible.
    +UNIX>
    + +
    + + +

    +For composite fields GF((2l)2), we are looking for a value s such that x2 + sx + 1 is irreducible. That value +depends on the base field. For example, for the default field GF(232), a value of s = 2 makes the polynomial +irreducible. However, if the polynomial 0xc5 is used (so that PCLMUL is fast - see section 7.7), then s = 2 yields a +reducible polynomial, but s = 3 yields an irreducible one. You can use gf_poly to help verify these things, and to help +define s if you need to stray from the defaults:


    + +
    +UNIX> gf_poly 32 - 2:1 1:2 0:1
    +Poly: xˆ2 + (0x2)x + 1
    +Irreducible.
    +UNIX> gf_poly 32 -p 0xc5 - 2:1 1:2 0:1
    +Poly: xˆ2 + (0x2)x + 1
    +Reducible.
    +UNIX> gf_poly 32 -p 0xc5 - 2:1 1:3 0:1
    +Poly: xˆ2 + (0x3)x + 1
    +Irreducible.
    +UNIX>
    +
    + +

    +gf_unit does random sampling to test for problems. In particular, it chooses a random a and a random b, multiplies +them, and then tests the result by dividing it by a and b. When w is large, this sampling does not come close to +providing complete coverage to check for problems. In particular, if the polynomial is reducible, there is a good +chance that gf_unit won't discover any problems. For example, the following gf_unit call does not flag any problems, +even though the polynomial is reducible.

    +
    +
    +UNIX> gf_unit 64 A 0 -m COMPOSITE 2 -p 0xc5 - -p 2 -
    +UNIX> +
    + +

    +How can we demonstrate that this particular field has a problem? Well, when the polynomial is 0xc5, we can factor +x2 + 2x + 1 as (x + 0x7f6f95f9)(x + 0x7f6f95fb). Thus, in the composite field, when we multiply 0x17f6f95f9 by +0x17f6f95fb, we get zero. That's the problem: +

    + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 34


    + +
    + +UNIX> gf_mult 7f6f95f9 7f6f95fb 32h -p 0xc5 -
    +1
    +UNIX> gf_mult 17f6f95f9 17f6f95fb 64h -m COMPOSITE 2 -p 0xc5 - -p 2 -
    +0
    +UNIX>
    + +
    + +

    7.9 "ALTMAP" considerations and extract_word()

    + +There are two times when you may employ alternate memory mappings: +
      +
    1. When using "SPLIT" and wb = 4.
      2. +
    2. When using "COMPOSITE."
      3. +
    + +Additionally, by default, the "CAUCHY" region option also employs an alternate memory mapping. + +

    When you use alternate memory mappings, the exact mapping of words in GF(2w ) to memory depends on the +situation, the size of the region, and the alignment of the pointers. To help you figure things out, we have included the +procedures extract_word.wxx() as part of the gf_t struct. This procedure takes four parameters:

    +
      +
    • A pointer to the gf_t.
      • +
    • The beginning of the memory region.
      • +
    • The number of bytes in the memory region.
      • +
    • The desired word number: n.
      • +
    + +

    +It then returns the n-th word in memory. When the standard mapping is employed, this simply returns the n- +th contiguous word in memory. With alternate mappings, each word may be split over several memory regions, so +extract_word() grabs the relevant parts of each memory region to extract the word. Below, we go over each of the +above situations in detail. Please refer to Figure 2 in Section 5 for reference.

    + + +

    7.9.1 Alternate mappings with "SPLIT"

    + +The alternate mapping with "SPLIT" is employed so that we can best leverage mm_shuffle_epi8(). Please read [PGM13b] +for details as to why. Consider an example when w = 16. In the main region of memory (the middle region in Figure +2), multiplication proceeds in units of 32 bytes, which are each broken into two 16-byte regions. The first region +holds the high bytes of each word in GF(216), and the second region holds the low bytes. +Let's look at a very detailed example, from gf_example_5.c. This program makes the following call, where gf has + +been initialized for w = 16, using "SPLIT" and "ALTMAP:"

    +
    +gf.multiply_region.w32(&gf, a, b, 0x1234, 30*2, 0); +

    + + +

    In other words, it is multiplying a region a of 60 bytes (30 words) by the constant 0x1234 in GF(216), and placing +the result into b. The pointers a and b have been set up so that they are not multiples of 16. The first line of output +prints a and b:


    + +a: 0x10010008c b: 0x10010015c

    + +As described in Section 5, the regions of memory are split into three parts: + + + + + + + + +
    + + +6     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 35


    + + +
      +
    1. 4 bytes starting at 0x1001008c / 0x10010015c.
      2. +
    2. 32 bytes starting at 0x10010090 / 0x100100160.
      3. +
    3. 24 bytes starting at 0x100100b0 / 0x100100180.
      4. + +
    + + +

    In the first and third parts, the bytes are laid out according to the standard mapping. However, the second part is +split into two 16-byte regions- one that holds the high bytes of each word and one that holds the low bytes. To help +illustrate, the remainder of the output prints the 30 words of a and b as they appear in memory, and then the 30 return +values of extract_word.w32():


    + +
    + + + + + + + + + + + +
    1 2 3 4 5 6 7 8 9
    a: 640b 07e5 2fba ce5d f1f9 3ab8 c518 1d97 45a7 0160
    b: 1ba3 644e 84f8 be3c 4318 4905 b2fb 46eb ef01 a503
    +

    + + + + + + + + + + + +
    10 11 12 13 14 15 16 17 18 19
    a: 3759 b107 9660 3fde b3ea 8a53 75ff 46dc c504 72c2
    b: da27 e166 a0d2 b3a2 1699 3a3e 47fb 39af 1314 8e76
    + + +

    + + + + + + + + + +
    20 21 22 23 24 25 26 27 28 29
    a: b469 1b97 e91d 1dbc 131e 47e0 c11a 7f07 76e0 fe86
    b: 937c a5db 01b7 7f5f 8974 05e1 cff3 a09c de3c 4ac0
    +

    + + + + + + + + + + + + + + + + + + + +
    Word 0: 0x640b * 0x1234 = 0x1ba3 Word 15: 0x4575 * 0x1234 = 0xef47
    Word 1: 0x07e5 * 0x1234 = 0x644e Word 16: 0x60dc * 0x1234 = 0x03af
    Word 2: 0xba59 * 0x1234 = 0xf827 Word 17: 0x0146 * 0x1234 = 0xa539
    Word 3: 0x2f37 * 0x1234 = 0x84da Word 18: 0xc504 * 0x1234 = 0x1314
    Word 4: 0x5d07 * 0x1234 = 0x3c66 Word 19: 0x72c2 * 0x1234 = 0x8e76
    Word 5: 0xceb1 * 0x1234 = 0xbee1 Word 20: 0xb469 * 0x1234 = 0x937c
    Word 6: 0xf960 * 0x1234 = 0x18d2 Word 21: 0x1b97 * 0x1234 = 0xa5db
    Word 7: 0xf196 * 0x1234 = 0x43a0 Word 22: 0xe91d * 0x1234 = 0x01b7
    Word 8: 0xb8de * 0x1234 = 0x05a2 Word 23: 0x1dbc * 0x1234 = 0x7f5f
    Word 9: 0x3a3f * 0x1234 = 0x49b3 Word 24: 0x131e * 0x1234 = 0x8974
    Word 10: 0x18ea * 0x1234 = 0xfb99 Word 25: 0x47e0 * 0x1234 = 0x05e1
    Word 11: 0xc5b3 * 0x1234 = 0xb216 Word 26: 0xc11a * 0x1234 = 0xcff3
    Word 12: 0x9753 * 0x1234 = 0xeb3e Word 27: 0x7f07 * 0x1234 = 0xa09c
    Word 13: 0x1d8a * 0x1234 = 0x463a Word 28: 0x76e0 * 0x1234 = 0xde3c
    Word 14: 0xa7ff * 0x1234 = 0x01fb Word 29: 0xfe86 * 0x1234 = 0x4ac0
    +
    +
    +In the first region are words 0 and 1, which are identical to how they appear in memory: 0x640b and 0x07e5. In +the second region are words 2 through 17. These words are split among the two sixteen-byte regions. For example, +word 2, which extract_word() reports is 0xba59, is constructed from the low byte in word 2 (0xba) and the low byte +in word 10 (0x59). Since 0xba59 * 0x1234 = 0xf827, we see that the low byte in word 2 of b is 0xf8, and the low byte +in word 10 is 0x27. +

    When we reach word 22, we are in the third region of memory, and words are once again identical to how they +appear in memory.

    + +

    While this is confusing, we stress that that so long as you call multiply_region() with pointers of the same alignment +and regions of the same size, your results with ALTMAP will be consistent. If you call it with pointers of

    + + + + + + +
    + + +7     FURTHER INFORMATION ON OPTIONS AND ALGORITHMS 36


    + +different alignments, or with different region sizes, then the results will not be consistent. To reiterate, if you don't use +ALTMAP, you don't have to worry about any of this - words will always be laid out contiguously in memory. +

    +When w = 32, the middle region is a multiple of 64, and each word in the middle region is broken into bytes, each +of which is in a different 16-byte region. When w = 64, the middle region is a multiple of 128, and each word is +stored in eight 16-byte regions. And finally, whenw = 128, the middle region is a multiple of 128, and each word is +stored in 16 16-byte regions.


    + +

    7.9.2   Alternate mappings with "COMPOSITE"

    + +With "COMPOSITE," the alternate mapping divides the middle region in half. The lower half of each word is stored +in the first half of the middle region, and the higher half is stored in the second half. To illustrate, gf_example_6 +performs the same example as gf_example_5, except it is using "COMPOSITE" in GF((216)2), and it is multiplying +a region of 120 bytes rather than 60. As before, the pointers are not aligned on 16-bit quantities, so the region is broken +into three regions of 4 bytes, 96 bytes, and 20 bytes. In the first and third region, each consecutive four byte word is a +word in GF(232). For example, word 0 is 0x562c640b, and word 25 is 0x46bc47e0. In the middle region, the low two +bytes of each word come from the first half, and the high two bytes come from the second half. For example, word 1 +as reported by extract_word() is composed of the lower two bytes of word 1 of memory (0x07e5), and the lower two +bytes of word 13 (0x3fde). The product of 0x3fde07e5 and 0x12345678 is 0x211c880d, which is stored in the lower +two bytes of words 1 and 13 of b.

    + +a: 0x10010011c b: 0x1001001ec + +

    + +
    + + + + + + + + + + + + + + +
    1 2 3 4 5 6 7 8 9
    a: 562c640b 959407e5 56592fba cbadce5d 1d1cf1f9 35d73ab8 6493c518 b37c1d97 8e4545a7 c0d80160
    b: f589f36c f146880d 74f7b349 7ea7c5c6 34827c1a 93cc3746 bfd9288b 763941d1 bcd33a5d da695e64
    + + +

    + + + + + + + + + + + + + +
    10 11 12 13 14 15 16 17 18 19
    a: 965b3759 cb3eb107 1b129660 95a33fde 95a7b3ea d16c8a53 153375ff f74646dc 35aac504 98f972c2
    b: fd70f125 3274fa8f d9dd34ee c01a211c d4402403 8b55c08b da45f0ad 90992e18 b65e0902 d91069b5
    + + + +

    + + + + + + + + + + + +
    20 21 22 23 24 25 26 27 28 29
    a: 5509b469 7f8a1b97 3472e91d 9ee71dbc de4e131e 46bc47e0 5bc9c11a 931d7f07 c85cfe86 fe86
    b: fc92b8f5 edd59668 b4bc0d90 a679e4ce 1a98f7d0 6038765f b2ff333f e7937e49 fa5a5867 79c00ea2
    +

    + + + + + + + + + + + + + + + + + + + +
    Word 0: 0x562c640b * 0x12345678 = 0xf589f36c Word 15: 0xb46945a7 * 0x12345678 = 0xb8f53a5d
    Word 1: 0x3fde07e5 * 0x12345678 = 0x211c880d Word 16: 0x55098e45 * 0x12345678 = 0xfc92bcd3
    Word 2: 0x95a39594 * 0x12345678 = 0xc01af146 Word 17: 0x1b970160 * 0x12345678 = 0x96685e64
    Word 3: 0xb3ea2fba * 0x12345678 = 0x2403b349 Word 18: 0x7f8ac0d8 * 0x12345678 = 0xedd5da69
    Word 4: 0x95a75659 * 0x12345678 = 0xd44074f7 Word 19: 0xe91d3759 * 0x12345678 = 0x0d90f125
    Word 5: 0x8a53ce5d * 0x12345678 = 0xc08bc5c6 Word 20: 0x3472965b * 0x12345678 = 0xb4bcfd70
    Word 6: 0xd16ccbad * 0x12345678 = 0x8b557ea7 Word 21: 0x1dbcb107 * 0x12345678 = 0xe4cefa8f
    Word 7: 0x75fff1f9 * 0x12345678 = 0xf0ad7c1a Word 22: 0x9ee7cb3e * 0x12345678 = 0xa6793274
    Word 8: 0x15331d1c * 0x12345678 = 0xda453482 Word 23: 0x131e9660 * 0x12345678 = 0xf7d034ee
    Word 9: 0x46dc3ab8 * 0x12345678 = 0x2e183746 Word 24: 0xde4e1b12 * 0x12345678 = 0x1a98d9dd
    Word 10: 0xf74635d7 * 0x12345678 = 0x909993cc Word 25: 0x46bc47e0 * 0x12345678 = 0x6038765f
    Word 11: 0xc504c518 * 0x12345678 = 0x0902288b Word 26: 0x5bc9c11a * 0x12345678 = 0xb2ff333f
    Word 12: 0x35aa6493 * 0x12345678 = 0xb65ebfd9 Word 27: 0x931d7f07 * 0x12345678 = 0xe7937e49
    +
    + + + + + + + + +
    + + +8     THREAD SAFETY 37


    +
    + + + + + + + + + +
    Word 13: 0x72c21d97 * 0x12345678 = 0x69b541d1 Word 28: 0xd40676e0 * 0x12345678 = 0xfa5a5867
    Word 14: 0x98f9b37c * 0x12345678 = 0xd9107639 Word 29: 0xc85cfe86 * 0x12345678 = 0x79c00ea2
    +

    + + +

    +As with "SPLIT," using multiply_region() with "COMPOSITE" and "ALTMAP" will be consistent only if the +alignment of pointers and region sizes are identical.

    + + +

    7.9.3 The mapping of "CAUCHY"

    + +With "CAUCHY," the region is partitioned into w subregions, and each word in the region is broken into w bits, +each of which is stored in a different subregion. To illustrate, gf_example_7 multiplies a region of three bytes by 5 +in GF(23) using "CAUCHY:"

    + +
    + +UNIX> gf_example_7
    +a: 0x100100190 b: 0x1001001a0

    +a: 0x0b 0xe5 0xba
    +b: 0xee 0xba 0x0b

    +a bits: 00001011 11100101 10111010
    +b bits: 11101110 10111010 00001011

    +Word 0: 3 * 5 = 4
    +Word 1: 5 * 5 = 7
    +Word 2: 2 * 5 = 1
    +Word 3: 5 * 5 = 7
    +Word 4: 4 * 5 = 2
    +Word 5: 6 * 5 = 3
    +Word 6: 2 * 5 = 1
    +Word 7: 6 * 5 = 3
    +UNIX>

    +

    + +The program prints the three bytes of a and b in hexadecimal and in binary. To see how words are broken up, +consider word 0, which is the lowest bit of each of the three bytes of a (and b). These are the bits 1, 1 and 0 in a, and +0, 0, and 1 in b. Accordingly, the word is 3 in a, and 3*5 = 4 in b. Similarly, word 7 is the high bit in each byte: 0, 1, 1 +(6) in a, and 1, 1, 0 (3) in b.

    +

    With "CAUCHY," multiply_region()may be implemented exclusively with XOR operations. Please see [BKK+95] +for more information on the motivation behind "CAUCHY."

    + +

    8   Thread Safety

    + +Once you initialize a gf_t, you may use it wontonly in multiple threads for all operations except for the ones below. +With the implementations listed below, the scratch space in the gf_t is used for temporary tables, and therefore you +cannot call region_multiply, and in some cases multiply from multiple threads because they will overwrite each +others' tables. In these cases, if you want to call the procedures from multiple threads, you should allocate a separate +gf_t for each thread: +
      +
    • + All "GROUP" implementations are not thread safe for either region_multiply() or multiply(). Other than +"GROUP," multiply() is always thread-safe. + +
      • +
    + + + + + + + + + +
    + + +9     LISTING OF PROCEDURES 38


    +
      +
    • + +For w = 4, region_multiply.w32() is unsafe in in "-m TABLE -r QUAD -r LAZY."

      • +
    • For w = 8, region_multiply.w32() is unsafe in in "-m TABLE -r DOUBLE -r LAZY."

      • +
    • For w = 16, region_multiply.w32() is unsafe in in "-m TABLE."

      • +
    • For w ∈ {32, 64, 128}, all "SPLIT" implementations are unsafe for region_multiply(). This means that if the +default uses "SPLIT" (see Table 1 for when that occurs), then region_multiply() is not thread safe.

      • +
    • The "COMPOSITE" operations are only safe if the implementations of the underlying fields are safe.
      • +
    + +

    9  Listing of Procedures

    + +The following is an alphabetical listing of the procedures, data types and global variables for users to employ in +GF-complete.
    + +
      +
    • GF_W16_INLINE_DIV() in gf_complete.h: This is a macro for inline division when w = 16. See section 7.1.

      • +
    • GF_W16_INLINE_MULT() in gf_complete.h: This is a macro for inline multiplication when w = 16. See +section 7.1.

      • +
    • GF_W4_INLINE_MULTDIV() in gf_complete.h: This is a macro for inline multiplication/division when w = +4. See section 7.1.

      • + +
    • GF_W8_INLINE_MULTDIV() in gf_complete.h: This is a macro for inline multiplication/division when w = +8. See section 7.1.

      • +
    • MOA_Fill_Random_Region() in gf_rand.h: Fills a region with random numbers.

      • +
    • MOA_Random_128() in gf_rand.h: Creates a random 128-bit number.

      • +
    • MOA_Random_32() in gf_rand.h: Creates a random 32-bit number.

      • +
    • MOA_Random_64() in gf_rand.h: Creates a random 64-bit number.

      • +
    • MOA_Random_W() in gf_rand.h: Creates a random w-bit number, where w ≤ 32.

      • +
    • MOA_Seed() in gf_rand.h: Sets the seed for the random number generator.

      • +
    • gf_errno in gf_complete.h: This is to help figure out why an initialization call failed. See section 6.1.

      • +
    • gf_create_gf_from_argv() in gf_method.h: Creates a gf_t using C style argc/argv. See section 6.1.1.

      • +
    • gf_division_type_t in gf_complete.h: the different ways to specify division when using gf_init_hard(). See +section 6.4.

      • +
    • gf_error() in gf_complete.h: This prints out why an initialization call failed. See section 6.1.

      • + +
    • gf_extract in gf_complete.h: This is the data type of extract_word() in a gf_t. See section 7.9 for an example +of how to use extract word().
      • +
    + + + + + +
    + + +9     LISTING OF PROCEDURES 39


    +
      +
    • +gf_free() in gf_complete.h: If gf_init easy(), gf_init hard() or create_gf_from_argv() allocated memory, this +frees it. See section 6.4.
      • + +
    • gf_func_a_b in gf_complete.h: This is the data type of multiply() and divide() in a gf_t. See section 4.2 for +examples of how to use multiply() and divide()

      • + +
    • gf_func_a_b in gf_complete.h: This is the data type of multiply() and divide() in a gf_t. See section 4.2 for +examples of how to use multiply() and divide()

      • + +
    • gf_func_a in gf_complete.h: This is the data type of inverse() in a gf_t

      • + +
    • gf_general_add() in gf_general.h: This adds two gf_general_t's

      • + +
    • gf_general_divide() in gf_general.h: This divides two gf_general t's

      • + +
    • gf_general_do_region_check() in gf_general.h: This checks a region multiply of gf_general_t's

      • + +
    • gf_general_do_region_multiply() in gf_general.h: This does a region multiply of gf_general_t's

      • + +
    • gf_general_do_single_timing_test() in gf_general.h: Used in gf_time.c

      • + +
    • gf_general_inverse() in gf_general.h: This takes the inverse of a gf_general_t

      • + +
    • gf_general_is_one() in gf_general.h: This tests whether a gf_general_t is one

      • + +
    • gf_general_is_two() in gf_general.h: This tests whether a gf_general_t is two

      • + +
    • gf_general_is_zero() in gf_general.h: This tests whether a gf_general_t is zero

      • + +
    • gf_general_multiply() in gf_general.h: This multiplies two gf_general_t's. See the implementation of gf_mult.c + +for an example

      • +
    • gf_general_s_to_val() in gf_general.h: This converts a string to a gf_general t. See the implementation of +gf_mult.c for an example

      • +
    • gf_general_set_one() in gf_general.h: This sets a gf_general_t to one

      • +
    • gf_general_set_random() in gf_general.h: This sets a gf_general_t to a random number

      • +
    • gf_general_set_two() in gf_general.h: This sets a gf_general_t to two

      • +
    • gf_general_set_up_single_timing_test() in gf_general.h: Used in gf_time.c

      • +
    • gf_general_set_zero() in gf_general.h: This sets a gf_general_t_to_zero

      • +
    • gf_general_t_in .gf_general.h: This is a general data type for all values of w. See the implementation of gf_mult.c +for examples of using these

      • +
    • gf_general_val_to_s() ingf_general.h: This converts a gf_general_t to a string. See the implementation of +gf_mult.c for an example

      • + +
    • gf_init_easy() in gf_complete.h: This is how you initialize a default gf_t. See 4.2 through 4.5 for examples of +calling gf_init_easy()

      • +
    + + + + + + + +
    + + +9     LISTING OF PROCEDURES 40


    + +
      + +
    • gf_init hard() in gf_complete.h: This allows you to initialize a gf_t without using the defaults. See 6.4. We +recommend calling create gf_from argv() when you can, instead of gf_ init_hard()

      • + +
    • gf_ mult_type_t in gf_complete.h: the different ways to specify multiplication when using gf_init hard(). See +section 6.4

      • + +
    • gf_region_type_t in gf_complete.h: the different ways to specify region multiplication when using gf_init_hard(). +See section 6.4

      • + +
    • gf_region_in gf_complete.h: This is the data type of multiply_region() in a gf_t. See section 4.3 for an example +of how to use multiply_region()

      • + +
    • gf_scratch_size() in gf_complete.h: This is how you calculate how much memory a gf_t needs. See section 6.4.

      • + +
    • gf_size() in gf_complete.h: Returns the memory consumption of a gf_t. See section 6.5.

      • + +
    • gf_ val_128_t in gf_complete.h: This is how you store a value where w ≤ 128. It is a pointer to two 64-bit +unsigned integers. See section 4.4

      • + + +
    • gf_val_32_t in gf_ complete.h: This is how you store a value where w ≤ 32. It is equivalent to a 32-bit unsigned +integer. See section 4.2

      • + +
    • gf_ val_64_t in gf_complete.h: This is how you store a value where w ≤ 64. It is equivalent to a 64-bit unsigned +integer. See section 4.5

      • + +
    • gf_w16_get_div_alog_table() in gf_ complete.h: This returns a pointer to an inverse logarithm table that can be +used for inlining division when w = 16. See section 7.1

      • + + +
    • gf_w16_get_log_table() in gf_complete.h: This returns a pointer to a logarithm table that can be used for inlining +when w = 16. See section 7.1

      • + + +
    • gf_w16_get_mult_alog_table() in gf_complete.h: This returns a pointer to an inverse logarithm table that can be +used for inlining multiplication when w = 16. See section 7.1

      • + + +
    • gf_ w4 get div table() in gf_complete.h: This returns a pointer to a division table that can be used for inlining +when w = 4. See section 7.1

      • + + +
    • gf_w4_get_mult_table() in gf_complete.h: This returns a pointer to a multiplication table that can be used for +inlining when w = 4. See section 7.1

      • + +
    • gf_w8_get_div_table() in gf_complete.h: This returns a pointer to a division table that can be used for inlining +when w = 8. See section 7.1

      • + +
    • gf_w8_get_mult_table() in gf_complete.h: This returns a pointer to a multiplication table that can be used for +inlining when w = 8. See section 7.1

      • + +
    + + + + + + + + + +
    +10     TROUBLESHOOTING 41


    + +
      +
    • SSE support. Leveraging SSE instructions requires processor support as well as compiler support. For example, +the Mac OS 10.8.4 (and possibly earlier versions) default compile environment fails to properly compile +PCLMUL instructions. This issue can be fixed by installing an alternative compiler; see Section 3 for details

      • + +
    • Initialization segfaults. You have to already have allocated your gf_t before you pass a pointer to it in +bgf_init_easy(), create_gf_ from_argv(), or bgf_ini_hard()

      • + + +
    • GF-Complete is slower than it should be. Perhaps your machine has SSE, but you haven't specified the SSE +compilation flags. See section 3 for how to compile using the proper flags

      • + + +
    • Bad alignment. If you get alignment errors, see Section 5

      • + +
    • Mutually exclusive region types. Some combinations of region types are invalid. All valid and implemented +combinations are printed by bgf_methods.c

      • + +
    • Incompatible division types. Some choices of multiplication type constrain choice of divide type. For example, +"COMPOSITE" methods only allow the default division type, which divides by finding inverses (i.e., +neither "EUCLID" nor "MATRIX" are allowed). For each multiplication method printed by gf_methods.c, the +corresponding valid division types are also printed

      • + + +
    • Arbitrary "GROUP" arguments. The legal arguments to "GROUP" are specified in section 7.5

      • + +
    • Arbitrary "SPLIt" arguments. The legal arguments to "SPLIt" are specified in section 7.4

      • + +
    • Threading problems. For threading questions, see Section 8

      • + +
    • No default polynomial. If you change the polynomial in a base field using "COMPOSITE," then unless it is +a special case for which GF-Complete finds a default polynomial, you'll need to specify the polynomial of the +composite field too. See 7.8.2 for the fields where GF-Complete will support default polynomials

      • +
    • Encoding/decoding with different fields. Certain fields are not compatible. Please see section 7.2 for an +explanation

      • + + +
    • "ALTMAP" is confusing. We agree. Please see section 7.9 for more explanation.

      • + +
    • I used "ALTMAP" and it doesn't appear to be functioning correctly. With 7.9, the size of the region and +its alignment both matter in terms of how "ALTMAP" performs multiply_region(). Please see section 7.9 for +detailed explanation

      • + +
    • Where are the erasure codes?. This library only implements Galois Field arithmetic, which is an underlying +component for erasure coding. Jerasure will eventually be ported to this library, so that you can have fast erasure +coding

      • +
    +

    11     Timings

    + +We don't want to get too detailed with timing, because it is quite machine specific. However, here are the timings on +an Intel Core i7-3770 CPU running at 3.40 GHz, with 4 × 256 KB L2 caches and an 8MB L3 cache. All timings are +obtained with gf_time or gf_inline_time, in user mode with the machine dedicated solely to running these jobs. + + + + + + + + + +
    +10     TROUBLESHOOTING 41


    + +
    +
    Figure 4: Speed of doing single multiplications for w ∈ {4, 8, 16}.
    +

    11.1   Multiply()

    + +The performance of multiply() is displayed in Figures 4 for w ∈ {4, 8, 16} and 5 for w ∈ {32, 64, 128}. These +numbers were obtained by calling gf_time with the size and iterations both set to 10240. We plot the speed in megaops +per second. + +

    As would be anticipated, the inlined operations (see section 7.1) outperform the others. Additionally, in all +cases with the exception of w = 32, the defaults are the fastest performing implementations. With w = 32, +"CARRY_FREE" is the fastest with an alternate polynomial (see section 7.7). Because we require the defaults to +use a "standard" polynomial, we cannot use this implementation as the default.

    + +

    11.2   Divide()

    + +For the "TABLE" and "LOG" implementations, the performance of division is the same as multiplication. This means +that for w ∈ {4, 8, 16}, it is very fast indeed. For the other implementations, division is implemented with Euclid's +method, and is several factors slower than multiplication. +In Figure 6, we plot the speed of a few implementations of the larger word sizes. Compared to the "TABLE" and +"LOG" implemenations for the smaller word sizes, where the speeds are in the hundreds of mega-ops per second, +these are very slow. Of note is the "COMPOSITE" implementation for w = 32, which is much faster than the others + + + + + + + + +
    +10     TROUBLESHOOTING 43


    + +
    + +
    Figure 5: Speed of doing single multiplications for w ∈ {32, 64, 128}.

    + +because it uses a special application of Euclid's method, which relies on division in GF(216), which is very fast.

    + +

    11.3   Multiply_Region()

    + +Tables 3 through 8 show the performance of the various region operations. It should be noted that for GF(216 ) +through GF(2128), the default is not the fastest implementation of multiply_region(). The reasons for this are outlined +in section 6 +

    +For these tables, we performed 1GB worth of multiply_region() calls for all regions of size 2i bytes for 10 ≤ i ≤ +30. In the table, we plot the fastest speed obtained.

    +

    We note that the performance of "CAUCHY" can be improved with techniques from [LSXP13] and [PSR12].

    + + + + + + + + + +
    +REFERENCES 44


    + +
    + +
    Figure 6: Speed of doing single divisions for w ∈ {32, 64, 128}.

    + +
    +
    + + + + + + + + + + + + + + + + + + + + +
    Method Speed (MB/s)
    -m TABLE (Default) - 11879.909
    -m TABLE -r CAUCHY - 9079.712
    -m BYTWO_b - 5242.400
    -m BYTWO_p - 4078.431
    -m BYTWO_b -r NOSSE - 3799.699
    -m TABLE -r QUAD - 3014.315
    -m TABLE -r DOUBLE - 2253.627
    -m TABLE -r NOSSE - 2021.237
    -m TABLE -r NOSSE - 1061.497
    -m LOG - 503.310
    m SHIFT - 157.749
    -m CARRY_FREE - 86.202


    +
    +
    Table 3: Speed of various calls to multiply_region() for w = 4.
    + +

    References

    + +[Anv09] H. P. Anvin. The mathematics of RAID-6. http://kernel.org/pub/linux/kernel/people/hpa/ +raid6.pdf, 2009.

    + +[BKK+95] J. Blomer, M. Kalfane, M. Karpinski, R. Karp, M. Luby, and D. Zuckerman. An XOR-based erasureresilient +coding scheme. Technical Report TR-95-048, International Computer Science Institute, August +1995.

    + +[GMS08] K. Greenan, E. Miller, and T. J. Schwartz. Optimizing Galois Field arithmetic for diverse processor +architectures and applications. In MASCOTS 2008: 16th IEEE Symposium on Modeling, Analysis and +Simulation of Computer and Telecommunication Systems, Baltimore, MD, September 2008.

    + + +[GP97] S. Gao and D. Panario. Tests and constructions of irreducible polynomials over finite fields. In Foundations +of Computational Mathematics, pages 346–361. Springer Verlag, 1997. + + + + + + + + + + + + + + + + +
    +REFERENCES 45


    + + +
    +
    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Method Speed (MB/s)
    -m SPLIT 8 4 (Default) 13279.146
    -m COMPOSITE 2 - -r ALTMAP - 5516.588
    -m TABLE -r CAUCHY - 4968.721
    -m BYTWO_b - 2656.463
    -m TABLE -r DOUBLE - 2561.225
    -m TABLE - 1408.577
    -m BYTWO_b -r NOSSE - 1382.409
    -m BYTWO_p - 1376.661
    -m LOG_ZERO_EXT - 1175.739
    -m LOG_ZERO - 1174.694
    -m LOG - 997.838
    -m SPLIT 8 4 -r NOSSE - 885.897
    -m BYTWO_p -r NOSSE - 589.520
    -m COMPOSITE 2 - - 327.039
    -m SHIFT - 106.115
    -m CARRY_FREE - 104.299


    +
    +
    Table 4: Speed of various calls to multiply region() for w = 4.


    + +[LBOX12] J. Luo, K. D. Bowers, A. Oprea, and L. Xu. Efficient software implementations of large finite fields +GF(2n) for secure storage applications. ACM Transactions on Storage, 8(2), February 2012.

    + +[LD00] J. Lopez and R. Dahab. High-speed software multiplication in f2m. In Annual International Conference +on Cryptology in India, 2000.

    + +[LHy08] H. Li and Q. Huan-yan. Parallelized network coding with SIMD instruction sets. In International Symposium +on Computer Science and Computational Technology, pages 364-369. IEEE, December 2008.

    + +[LSXP13] J. Luo, M. Shrestha, L. Xu, and J. S. Plank. Efficient encoding schedules for XOR-based erasure codes. +IEEE Transactions on Computing,May 2013.

    + +[Mar94] G. Marsaglia. The mother of all random generators. ftp://ftp.taygeta.com/pub/c/mother. +c, October 1994.
    + +[PGM13a] J. S. Plank, K. M. Greenan, and E. L. Miller. A complete treatment of software implementations of +finite field arithmetic for erasure coding applications. Technical Report UT-CS-13-717, University of +Tennessee, September 2013.

    + +[PGM13b] J. S. Plank, K. M. Greenan, and E. L. Miller. Screaming fast Galois Field arithmetic using Intel SIMD +instructions. In FAST-2013: 11th Usenix Conference on File and Storage Technologies, San Jose, February +2013.

    + +[Pla97] J. S. Plank. A tutorial on Reed-Solomon coding for fault-tolerance in RAID-like systems. Software - +Practice & Experience, 27(9):995-1012, September 1997. + + + + + + + + + + + + +
    +REFERENCES 46


    + + +
    +
    + + + + + + + + + + + + + + + + + + + + + + + + + +
    Method Speed (MB/s)
    -m SPLIT 16 4 -r ALTMAP - 10460.834
    -m SPLIT 16 4 -r SSE (Default) - 8473.793
    -m COMPOSITE 2 - -r ALTMAP - 5215.073
    -m LOG -r CAUCHY - 2428.824
    -m TABLE - 2319.129
    -m SPLIT 16 8 - 2164.111
    -m SPLIT 8 8 - 2163.993
    -m SPLIT 16 4 -r NOSSE - 1148.810
    -m LOG - 1019.896
    -m LOG_ZERO - 1016.814
    -m BYTWO_b - 738.879
    -m COMPOSITE 2 - - 596.819
    -m BYTWO_p - 560.972
    -m GROUP 4 4 - 450.815
    -m BYTWO_b -r NOSSE - 332.967
    -m BYTWO_p -r NOSSE - 249.849
    -m CARRY_FREE - 111.582
    -m SHIFT - 95.813


    +
    +
    Table 5: Speed of various calls to multiply region() for w = 4.


    + +[PMG+13] J. S. Plank, E. L. Miller, K. M. Greenan, B. A. Arnold, J. A. Burnum, A. W. Disney, and A. C. McBride. +GF-Complete: A comprehensive open source library for Galois Field arithmetic. version 1.0. Technical +Report UT-CS-13-716, University of Tennessee, September 2013.

    + +[PSR12] J. S. Plank, C. D. Schuman, and B. D. Robison. Heuristics for optimizing matrix-based erasure codes for +fault-tolerant storage systems. In DSN-2012: The International Conference on Dependable Systems and +Networks, Boston, MA, June 2012. IEEE.

    + +[Rab89] M. O. Rabin. Efficient dispersal of information for security, load balancing, and fault tolerance. Journal +of the Association for Computing Machinery, 36(2):335-348, April 1989. + + + + + + + + + +
    +REFERENCES 47


    +
    +
    + + + + + + + + + + + + +
    Method Speed (MB/s)
    + +-m SPLIT 32 4 -r SSE -r ALTMAP -
    +-m SPLIT 32 4 (Default)
    +-m COMPOSITE 2 -m SPLIT 16 4 -r ALTMAP - -r ALTMAP -
    +-m COMPOSITE 2 - -r ALTMAP -
    +-m SPLIT 8 8 -
    +-m SPLIT 32 8 -
    +-m SPLIT 32 16 -
    +-m SPLIT 8 8 -r CAUCHY
    +-m SPLIT 32 4 -r NOSSE
    +-m CARRY_FREE -p 0xc5
    +-m COMPOSITE 2 -
    +-m BYTWO_b -
    +-m BYTWO_p -
    +-m GROUP 4 8 -
    +-m GROUP 4 4 -
    +-m CARRY_FREE -
    +-m BYTWO_b -r NOSSE -
    +-m BYTWO_p -r NOSSE -
    +-m SHIFT -
    + +    		 +7185.440
    +5063.966
    + 4176.440
    +3360.860
    +1345.678
    +1340.656
    +1262.676
    +1143.263
    + 480.859
    +393.185
    +332.964
    +309.971
    +258.623
    +242.076
    +227.399
    +226.785
    +143.403
    +111.956
    +52.295
    +


    +
    +
    Table 6: Speed of various calls to multiply region() w = 4.


    + +
    +
    + + + + + + + + + + + + +
    Method Speed (MB/s)
    +-m SPLIT 64 4 -r ALTMAP -
    +-m SPLIT 64 4 -r SSE (Default) -
    +-m COMPOSITE 2 -m SPLIT 32 4 -r ALTMAP - -r ALTMAP -
    +-m COMPOSITE 2 - -r ALTMAP -
    +-m SPLIT 64 16 -
    +-m SPLIT 64 8 -
    +-m CARRY_FREE -
    +-m SPLIT 64 4 -r NOSSE -
    +-m GROUP 4 4 -
    +-m GROUP 4 8 -
    +-m BYTWO_b -
    +-m BYTWO_p -
    +-m SPLIT 8 8 -
    +-m BYTWO_p -r NOSSE -
    +-m COMPOSITE 2 - -
    +-m BYTWO_b -r NOSSE -
    +-m SHIFT -
    + +    		3522.798
    + 2647.862
    +2461.572
    +1860.921
    +1066.490
    +998.461
    +975.290
    +545.479
    +230.137
    +153.947
    +144.052
    +124.538
    +98.892
    +77.912
    +77.522
    +36.391
    +25.282
    +


    +
    +
    Table 7: Speed of various calls to multiply region() for w = 4.


    + + + + + + + + + + + + + +
    +REFERENCES 48


    + +
    +
    + + + + + + + + + + + + +
    Method Speed (MB/s)
    + +-m SPLIT 128 4 -r ALTMAP -
    +-m COMPOSITE 2 -m SPLIT 64 4 -r ALTMAP - -r ALTMAP -
    +-m COMPOSITE 2 - -r ALTMAP -
    +-m SPLIT 128 8 (Default) -
    +-m CARRY_FREE -
    +-m SPLIT 128 4 -
    +-m COMPOSITE 2 -
    +-m GROUP 4 8 -
    +-m GROUP 4 4 -
    +-m BYTWO_p -
    +-m BYTWO_b -
    +-m SHIFT -
    +    		 +1727.683
    +1385.693
    +1041.456
    +872.619
    +814.030
    +500.133
    +289.207
    +133.583
    +116.187
    +25.162
    +25.157
    +14.183
    +


    +
    +
    Table 8: Speed of various calls to multiply region() for w = 4.


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+ +} + +/* This is page 45 */ +#data2 table{ +border-top-style:solid; +border-left-style:solid; + +border-bottom-style:solid; +border-top-width:2px; +border-left-width:2px; +border-bottom-width:2px; +border-color:black; +font-family: 'Roboto Condensed', sans-serif; + +} + +#data2 th{ +border-bottom-style:solid; +border-right-style:solid; +border-bottom-width:2px; +border-right-width:2px; +font-family: 'Roboto Condensed', sans-serif; + + +} + #data2 td { +border-right-style:solid; +border-right-width:2px; +font-family: 'Roboto Condensed', sans-serif; + +} + + + + + + + + + + + + + + + + + + + + diff --git a/src/erasure-code/jerasure/gf-complete/src/Makefile.am b/src/erasure-code/jerasure/gf-complete/src/Makefile.am new file mode 100644 index 00000000..cfc2a506 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/Makefile.am @@ -0,0 +1,32 @@ +# GF-Complete 'core' AM file +# Creates the library + +AUTOMAKE_OPTIONS = subdir-objects + +AM_CPPFLAGS = -I$(top_builddir)/include -I$(top_srcdir)/include + +# avoid using SIMD_FLAGS for code that calls strcmp as new gcc +# versions will use SIMD for the strcmp implementation. Instead +# we create a static library just for gf_method that is not compiled +# with SIMD_FLAGS, this static library will get linked into gf_complete.so +noinst_LTLIBRARIES = libgf_util.la +libgf_util_la_SOURCES = gf_method.c +libgf_util_la_CFLAGS = -O3 -fPIC -Wsign-compare + +# we narrowly use SIMD_FLAGS for code that needs it +lib_LTLIBRARIES = libgf_complete.la +libgf_complete_la_SOURCES = gf.c gf_wgen.c gf_w4.c gf_w8.c gf_w16.c gf_w32.c \ + gf_w64.c gf_w128.c gf_rand.c gf_general.c gf_cpu.c +libgf_complete_la_CFLAGS = -O3 $(SIMD_FLAGS) -fPIC -Wsign-compare +libgf_complete_la_LIBADD = libgf_util.la + +if HAVE_NEON +libgf_complete_la_SOURCES += neon/gf_w4_neon.c \ + neon/gf_w8_neon.c \ + neon/gf_w16_neon.c \ + neon/gf_w32_neon.c \ + neon/gf_w64_neon.c +endif + +libgf_complete_la_LDFLAGS = -version-info 1:0:0 + diff --git a/src/erasure-code/jerasure/gf-complete/src/gf.c b/src/erasure-code/jerasure/gf-complete/src/gf.c new file mode 100644 index 00000000..84d6996d --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf.c @@ -0,0 +1,1090 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf.c + * + * Generic routines for Galois fields + */ + +#include "gf_int.h" +#include +#include +#include +#include "gf_cpu.h" + +int _gf_errno = GF_E_DEFAULT; + +void gf_error() +{ + char *s; + + switch(_gf_errno) { + case GF_E_DEFAULT: s = "No Error."; break; + case GF_E_TWOMULT: s = "Cannot specify two -m's."; break; + case GF_E_TWO_DIV: s = "Cannot specify two -d's."; break; + case GF_E_POLYSPC: s = "-p needs to be followed by a number in hex (0x optional)."; break; + case GF_E_GROUPAR: s = "Ran out of arguments in -m GROUP."; break; + case GF_E_GROUPNU: s = "In -m GROUP g_s g_r -- g_s and g_r need to be numbers."; break; + case GF_E_SPLITAR: s = "Ran out of arguments in -m SPLIT."; break; + case GF_E_SPLITNU: s = "In -m SPLIT w_a w_b -- w_a and w_b need to be numbers."; break; + case GF_E_FEWARGS: s = "Not enough arguments (Perhaps end with '-'?)"; break; + case GF_E_CFM___W: s = "-m CARRY_FREE, w must be 4, 8, 16, 32, 64 or 128."; break; + case GF_E_COMPXPP: s = "-m COMPOSITE, No poly specified, and we don't have a default for the given sub-field."; break; + case GF_E_BASE__W: s = "-m COMPOSITE and the base field is not for w/2."; break; + case GF_E_CFM4POL: s = "-m CARRY_FREE, w=4. (Prim-poly & 0xc) must equal 0."; break; + case GF_E_CFM8POL: s = "-m CARRY_FREE, w=8. (Prim-poly & 0x80) must equal 0."; break; + case GF_E_CF16POL: s = "-m CARRY_FREE, w=16. (Prim-poly & 0xe000) must equal 0."; break; + case GF_E_CF32POL: s = "-m CARRY_FREE, w=32. (Prim-poly & 0xfe000000) must equal 0."; break; + case GF_E_CF64POL: s = "-m CARRY_FREE, w=64. (Prim-poly & 0xfffe000000000000ULL) must equal 0."; break; + case GF_E_MDEFDIV: s = "If multiplication method == default, can't change division."; break; + case GF_E_MDEFREG: s = "If multiplication method == default, can't change region."; break; + case GF_E_MDEFARG: s = "If multiplication method == default, can't use arg1/arg2."; break; + case GF_E_DIVCOMP: s = "Cannot change the division technique with -m COMPOSITE."; break; + case GF_E_DOUQUAD: s = "Cannot specify -r DOUBLE and -r QUAD."; break; + case GF_E_SIMD_NO: s = "Cannot specify -r SIMD and -r NOSIMD."; break; + case GF_E_CAUCHYB: s = "Cannot specify -r CAUCHY and any other -r."; break; + case GF_E_CAUCOMP: s = "Cannot specify -m COMPOSITE and -r CAUCHY."; break; + case GF_E_CAUGT32: s = "Cannot specify -r CAUCHY with w > 32."; break; + case GF_E_ARG1SET: s = "Only use arg1 with SPLIT, GROUP or COMPOSITE."; break; + case GF_E_ARG2SET: s = "Only use arg2 with SPLIT or GROUP."; break; + case GF_E_MATRIXW: s = "Cannot specify -d MATRIX with w > 32."; break; + case GF_E_BAD___W: s = "W must be 1-32, 64 or 128."; break; + case GF_E_DOUBLET: s = "Can only specify -r DOUBLE with -m TABLE."; break; + case GF_E_DOUBLEW: s = "Can only specify -r DOUBLE w = 4 or w = 8."; break; + case GF_E_DOUBLEJ: s = "Cannot specify -r DOUBLE with -r ALTMAP|SIMD|NOSIMD."; break; + case GF_E_DOUBLEL: s = "Can only specify -r DOUBLE -r LAZY with w = 8"; break; + case GF_E_QUAD__T: s = "Can only specify -r QUAD with -m TABLE."; break; + case GF_E_QUAD__W: s = "Can only specify -r QUAD w = 4."; break; + case GF_E_QUAD__J: s = "Cannot specify -r QUAD with -r ALTMAP|SIMD|NOSIMD."; break; + case GF_E_BADPOLY: s = "Bad primitive polynomial (high bits set)."; break; + case GF_E_COMP_PP: s = "Bad primitive polynomial -- bigger than sub-field."; break; + case GF_E_LAZY__X: s = "If -r LAZY, then -r must be DOUBLE or QUAD."; break; + case GF_E_ALTSHIF: s = "Cannot specify -m SHIFT and -r ALTMAP."; break; + case GF_E_SSESHIF: s = "Cannot specify -m SHIFT and -r SIMD|NOSIMD."; break; + case GF_E_ALT_CFM: s = "Cannot specify -m CARRY_FREE and -r ALTMAP."; break; + case GF_E_SSE_CFM: s = "Cannot specify -m CARRY_FREE and -r SIMD|NOSIMD."; break; + case GF_E_PCLMULX: s = "Specified -m CARRY_FREE, but PCLMUL is not supported."; break; + case GF_E_ALT_BY2: s = "Cannot specify -m BYTWO_x and -r ALTMAP."; break; + case GF_E_BY2_SSE: s = "Specified -m BYTWO_x -r SIMD, but SSE2 is not supported."; break; + case GF_E_LOGBADW: s = "With Log Tables, w must be <= 27."; break; + case GF_E_LOG___J: s = "Cannot use Log tables with -r ALTMAP|SIMD|NOSIMD."; break; + case GF_E_LOGPOLY: s = "Cannot use Log tables because the polynomial is not primitive."; break; + case GF_E_ZERBADW: s = "With -m LOG_ZERO, w must be 8 or 16."; break; + case GF_E_ZEXBADW: s = "With -m LOG_ZERO_EXT, w must be 8."; break; + case GF_E_GR_ARGX: s = "With -m GROUP, arg1 and arg2 must be >= 0."; break; + case GF_E_GR_W_48: s = "With -m GROUP, w cannot be 4 or 8."; break; + case GF_E_GR_W_16: s = "With -m GROUP, w == 16, arg1 and arg2 must be 4."; break; + case GF_E_GR_128A: s = "With -m GROUP, w == 128, arg1 must be 4, and arg2 in { 4,8,16 }."; break; + case GF_E_GR_A_27: s = "With -m GROUP, arg1 and arg2 must be <= 27."; break; + case GF_E_GR_AR_W: s = "With -m GROUP, arg1 and arg2 must be <= w."; break; + case GF_E_GR____J: s = "Cannot use GROUP with -r ALTMAP|SIMD|NOSIMD."; break; + case GF_E_TABLE_W: s = "With -m TABLE, w must be < 15, or == 16."; break; + case GF_E_TAB_SSE: s = "With -m TABLE, SIMD|NOSIMD only applies to w=4."; break; + case GF_E_TABSSE3: s = "With -m TABLE, -r SIMD, you need SSSE3 supported."; break; + case GF_E_TAB_ALT: s = "With -m TABLE, you cannot use ALTMAP."; break; + case GF_E_SP128AR: s = "With -m SPLIT, w=128, bad arg1/arg2."; break; + case GF_E_SP128AL: s = "With -m SPLIT, w=128, -r SIMD requires -r ALTMAP."; break; + case GF_E_SP128AS: s = "With -m SPLIT, w=128, ALTMAP needs SSSE3 supported."; break; + case GF_E_SP128_A: s = "With -m SPLIT, w=128, -r ALTMAP only with arg1/arg2 = 4/128."; break; + case GF_E_SP128_S: s = "With -m SPLIT, w=128, -r SIMD|NOSIMD only with arg1/arg2 = 4/128."; break; + case GF_E_SPLIT_W: s = "With -m SPLIT, w must be in {8, 16, 32, 64, 128}."; break; + case GF_E_SP_16AR: s = "With -m SPLIT, w=16, Bad arg1/arg2."; break; + case GF_E_SP_16_A: s = "With -m SPLIT, w=16, -r ALTMAP only with arg1/arg2 = 4/16."; break; + case GF_E_SP_16_S: s = "With -m SPLIT, w=16, -r SIMD|NOSIMD only with arg1/arg2 = 4/16."; break; + case GF_E_SP_32AR: s = "With -m SPLIT, w=32, Bad arg1/arg2."; break; + case GF_E_SP_32AS: s = "With -m SPLIT, w=32, -r ALTMAP needs SSSE3 supported."; break; + case GF_E_SP_32_A: s = "With -m SPLIT, w=32, -r ALTMAP only with arg1/arg2 = 4/32."; break; + case GF_E_SP_32_S: s = "With -m SPLIT, w=32, -r SIMD|NOSIMD only with arg1/arg2 = 4/32."; break; + case GF_E_SP_64AR: s = "With -m SPLIT, w=64, Bad arg1/arg2."; break; + case GF_E_SP_64AS: s = "With -m SPLIT, w=64, -r ALTMAP needs SSSE3 supported."; break; + case GF_E_SP_64_A: s = "With -m SPLIT, w=64, -r ALTMAP only with arg1/arg2 = 4/64."; break; + case GF_E_SP_64_S: s = "With -m SPLIT, w=64, -r SIMD|NOSIMD only with arg1/arg2 = 4/64."; break; + case GF_E_SP_8_AR: s = "With -m SPLIT, w=8, Bad arg1/arg2."; break; + case GF_E_SP_8__A: s = "With -m SPLIT, w=8, Can't have -r ALTMAP."; break; + case GF_E_SP_SSE3: s = "With -m SPLIT, Need SSSE3 support for SIMD."; break; + case GF_E_COMP_A2: s = "With -m COMPOSITE, arg1 must equal 2."; break; + case GF_E_COMP_SS: s = "With -m COMPOSITE, -r SIMD and -r NOSIMD do not apply."; break; + case GF_E_COMP__W: s = "With -m COMPOSITE, w must be 8, 16, 32, 64 or 128."; break; + case GF_E_UNKFLAG: s = "Unknown method flag - should be -m, -d, -r or -p."; break; + case GF_E_UNKNOWN: s = "Unknown multiplication type."; break; + case GF_E_UNK_REG: s = "Unknown region type."; break; + case GF_E_UNK_DIV: s = "Unknown division type."; break; + default: s = "Undefined error."; + } + + fprintf(stderr, "%s\n", s); +} + +uint64_t gf_composite_get_default_poly(gf_t *base) +{ + gf_internal_t *h; + uint64_t rv; + + h = (gf_internal_t *) base->scratch; + if (h->w == 4) { + if (h->mult_type == GF_MULT_COMPOSITE) return 0; + if (h->prim_poly == 0x13) return 2; + return 0; + } + if (h->w == 8) { + if (h->mult_type == GF_MULT_COMPOSITE) return 0; + if (h->prim_poly == 0x11d) return 3; + return 0; + } + if (h->w == 16) { + if (h->mult_type == GF_MULT_COMPOSITE) { + rv = gf_composite_get_default_poly(h->base_gf); + if (rv != h->prim_poly) return 0; + if (rv == 3) return 0x105; + return 0; + } else { + if (h->prim_poly == 0x1100b) return 2; + if (h->prim_poly == 0x1002d) return 7; + return 0; + } + } + if (h->w == 32) { + if (h->mult_type == GF_MULT_COMPOSITE) { + rv = gf_composite_get_default_poly(h->base_gf); + if (rv != h->prim_poly) return 0; + if (rv == 2) return 0x10005; + if (rv == 7) return 0x10008; + if (rv == 0x105) return 0x10002; + return 0; + } else { + if (h->prim_poly == 0x400007) return 2; + if (h->prim_poly == 0xc5) return 3; + return 0; + } + } + if (h->w == 64) { + if (h->mult_type == GF_MULT_COMPOSITE) { + rv = gf_composite_get_default_poly(h->base_gf); + if (rv != h->prim_poly) return 0; + if (rv == 3) return 0x100000009ULL; + if (rv == 2) return 0x100000004ULL; + if (rv == 0x10005) return 0x100000003ULL; + if (rv == 0x10002) return 0x100000005ULL; + if (rv == 0x10008) return 0x100000006ULL; /* JSP: (0x0x100000003 works too, + but I want to differentiate cases). */ + return 0; + } else { + if (h->prim_poly == 0x1bULL) return 2; + return 0; + } + } + return 0; +} + +int gf_error_check(int w, int mult_type, int region_type, int divide_type, + int arg1, int arg2, uint64_t poly, gf_t *base) +{ + int sse3 = 0; + int sse2 = 0; + int pclmul = 0; + int rdouble, rquad, rlazy, rsimd, rnosimd, raltmap, rcauchy, tmp; + gf_internal_t *sub; + + rdouble = (region_type & GF_REGION_DOUBLE_TABLE); + rquad = (region_type & GF_REGION_QUAD_TABLE); + rlazy = (region_type & GF_REGION_LAZY); + rsimd = (region_type & GF_REGION_SIMD); + rnosimd = (region_type & GF_REGION_NOSIMD); + raltmap = (region_type & GF_REGION_ALTMAP); + rcauchy = (region_type & GF_REGION_CAUCHY); + + if (divide_type != GF_DIVIDE_DEFAULT && + divide_type != GF_DIVIDE_MATRIX && + divide_type != GF_DIVIDE_EUCLID) { + _gf_errno = GF_E_UNK_DIV; + return 0; + } + + tmp = ( GF_REGION_DOUBLE_TABLE | GF_REGION_QUAD_TABLE | GF_REGION_LAZY | + GF_REGION_SIMD | GF_REGION_NOSIMD | GF_REGION_ALTMAP | + GF_REGION_CAUCHY ); + if (region_type & (~tmp)) { _gf_errno = GF_E_UNK_REG; return 0; } + +#ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2) { + sse2 = 1; + } +#endif + +#ifdef INTEL_SSSE3 + if (gf_cpu_supports_intel_ssse3) { + sse3 = 1; + } +#endif + +#ifdef INTEL_SSE4_PCLMUL + if (gf_cpu_supports_intel_pclmul) { + pclmul = 1; + } +#endif + +#ifdef ARM_NEON + if (gf_cpu_supports_arm_neon) { + pclmul = (w == 4 || w == 8); + sse3 = 1; + } +#endif + + + if (w < 1 || (w > 32 && w != 64 && w != 128)) { _gf_errno = GF_E_BAD___W; return 0; } + + if (mult_type != GF_MULT_COMPOSITE && w < 64) { + if ((poly >> (w+1)) != 0) { _gf_errno = GF_E_BADPOLY; return 0; } + } + + if (mult_type == GF_MULT_DEFAULT) { + if (divide_type != GF_DIVIDE_DEFAULT) { _gf_errno = GF_E_MDEFDIV; return 0; } + if (region_type != GF_REGION_DEFAULT) { _gf_errno = GF_E_MDEFREG; return 0; } + if (arg1 != 0 || arg2 != 0) { _gf_errno = GF_E_MDEFARG; return 0; } + return 1; + } + + if (rsimd && rnosimd) { _gf_errno = GF_E_SIMD_NO; return 0; } + if (rcauchy && w > 32) { _gf_errno = GF_E_CAUGT32; return 0; } + if (rcauchy && region_type != GF_REGION_CAUCHY) { _gf_errno = GF_E_CAUCHYB; return 0; } + if (rcauchy && mult_type == GF_MULT_COMPOSITE) { _gf_errno = GF_E_CAUCOMP; return 0; } + + if (arg1 != 0 && mult_type != GF_MULT_COMPOSITE && + mult_type != GF_MULT_SPLIT_TABLE && mult_type != GF_MULT_GROUP) { + _gf_errno = GF_E_ARG1SET; + return 0; + } + + if (arg2 != 0 && mult_type != GF_MULT_SPLIT_TABLE && mult_type != GF_MULT_GROUP) { + _gf_errno = GF_E_ARG2SET; + return 0; + } + + if (divide_type == GF_DIVIDE_MATRIX && w > 32) { _gf_errno = GF_E_MATRIXW; return 0; } + + if (rdouble) { + if (rquad) { _gf_errno = GF_E_DOUQUAD; return 0; } + if (mult_type != GF_MULT_TABLE) { _gf_errno = GF_E_DOUBLET; return 0; } + if (w != 4 && w != 8) { _gf_errno = GF_E_DOUBLEW; return 0; } + if (rsimd || rnosimd || raltmap) { _gf_errno = GF_E_DOUBLEJ; return 0; } + if (rlazy && w == 4) { _gf_errno = GF_E_DOUBLEL; return 0; } + return 1; + } + + if (rquad) { + if (mult_type != GF_MULT_TABLE) { _gf_errno = GF_E_QUAD__T; return 0; } + if (w != 4) { _gf_errno = GF_E_QUAD__W; return 0; } + if (rsimd || rnosimd || raltmap) { _gf_errno = GF_E_QUAD__J; return 0; } + return 1; + } + + if (rlazy) { _gf_errno = GF_E_LAZY__X; return 0; } + + if (mult_type == GF_MULT_SHIFT) { + if (raltmap) { _gf_errno = GF_E_ALTSHIF; return 0; } + if (rsimd || rnosimd) { _gf_errno = GF_E_SSESHIF; return 0; } + return 1; + } + + if (mult_type == GF_MULT_CARRY_FREE) { + if (w != 4 && w != 8 && w != 16 && + w != 32 && w != 64 && w != 128) { _gf_errno = GF_E_CFM___W; return 0; } + if (w == 4 && (poly & 0xc)) { _gf_errno = GF_E_CFM4POL; return 0; } + if (w == 8 && (poly & 0x80)) { _gf_errno = GF_E_CFM8POL; return 0; } + if (w == 16 && (poly & 0xe000)) { _gf_errno = GF_E_CF16POL; return 0; } + if (w == 32 && (poly & 0xfe000000)) { _gf_errno = GF_E_CF32POL; return 0; } + if (w == 64 && (poly & 0xfffe000000000000ULL)) { _gf_errno = GF_E_CF64POL; return 0; } + if (raltmap) { _gf_errno = GF_E_ALT_CFM; return 0; } + if (rsimd || rnosimd) { _gf_errno = GF_E_SSE_CFM; return 0; } + if (!pclmul) { _gf_errno = GF_E_PCLMULX; return 0; } + return 1; + } + + if (mult_type == GF_MULT_CARRY_FREE_GK) { + if (w != 4 && w != 8 && w != 16 && + w != 32 && w != 64 && w != 128) { _gf_errno = GF_E_CFM___W; return 0; } + if (raltmap) { _gf_errno = GF_E_ALT_CFM; return 0; } + if (rsimd || rnosimd) { _gf_errno = GF_E_SSE_CFM; return 0; } + if (!pclmul) { _gf_errno = GF_E_PCLMULX; return 0; } + return 1; + } + + if (mult_type == GF_MULT_BYTWO_p || mult_type == GF_MULT_BYTWO_b) { + if (raltmap) { _gf_errno = GF_E_ALT_BY2; return 0; } + if (rsimd && !sse2) { _gf_errno = GF_E_BY2_SSE; return 0; } + return 1; + } + + if (mult_type == GF_MULT_LOG_TABLE || mult_type == GF_MULT_LOG_ZERO + || mult_type == GF_MULT_LOG_ZERO_EXT ) { + if (w > 27) { _gf_errno = GF_E_LOGBADW; return 0; } + if (raltmap || rsimd || rnosimd) { _gf_errno = GF_E_LOG___J; return 0; } + + if (mult_type == GF_MULT_LOG_TABLE) return 1; + + if (w != 8 && w != 16) { _gf_errno = GF_E_ZERBADW; return 0; } + + if (mult_type == GF_MULT_LOG_ZERO) return 1; + + if (w != 8) { _gf_errno = GF_E_ZEXBADW; return 0; } + return 1; + } + + if (mult_type == GF_MULT_GROUP) { + if (arg1 <= 0 || arg2 <= 0) { _gf_errno = GF_E_GR_ARGX; return 0; } + if (w == 4 || w == 8) { _gf_errno = GF_E_GR_W_48; return 0; } + if (w == 16 && (arg1 != 4 || arg2 != 4)) { _gf_errno = GF_E_GR_W_16; return 0; } + if (w == 128 && (arg1 != 4 || + (arg2 != 4 && arg2 != 8 && arg2 != 16))) { _gf_errno = GF_E_GR_128A; return 0; } + if (arg1 > 27 || arg2 > 27) { _gf_errno = GF_E_GR_A_27; return 0; } + if (arg1 > w || arg2 > w) { _gf_errno = GF_E_GR_AR_W; return 0; } + if (raltmap || rsimd || rnosimd) { _gf_errno = GF_E_GR____J; return 0; } + return 1; + } + + if (mult_type == GF_MULT_TABLE) { + if (w != 16 && w >= 15) { _gf_errno = GF_E_TABLE_W; return 0; } + if (w != 4 && (rsimd || rnosimd)) { _gf_errno = GF_E_TAB_SSE; return 0; } + if (rsimd && !sse3) { _gf_errno = GF_E_TABSSE3; return 0; } + if (raltmap) { _gf_errno = GF_E_TAB_ALT; return 0; } + return 1; + } + + if (mult_type == GF_MULT_SPLIT_TABLE) { + if (arg1 > arg2) { + tmp = arg1; + arg1 = arg2; + arg2 = tmp; + } + if (w == 8) { + if (arg1 != 4 || arg2 != 8) { _gf_errno = GF_E_SP_8_AR; return 0; } + if (rsimd && !sse3) { _gf_errno = GF_E_SP_SSE3; return 0; } + if (raltmap) { _gf_errno = GF_E_SP_8__A; return 0; } + } else if (w == 16) { + if ((arg1 == 8 && arg2 == 8) || + (arg1 == 8 && arg2 == 16)) { + if (rsimd || rnosimd) { _gf_errno = GF_E_SP_16_S; return 0; } + if (raltmap) { _gf_errno = GF_E_SP_16_A; return 0; } + } else if (arg1 == 4 && arg2 == 16) { + if (rsimd && !sse3) { _gf_errno = GF_E_SP_SSE3; return 0; } + } else { _gf_errno = GF_E_SP_16AR; return 0; } + } else if (w == 32) { + if ((arg1 == 8 && arg2 == 8) || + (arg1 == 8 && arg2 == 32) || + (arg1 == 16 && arg2 == 32)) { + if (rsimd || rnosimd) { _gf_errno = GF_E_SP_32_S; return 0; } + if (raltmap) { _gf_errno = GF_E_SP_32_A; return 0; } + } else if (arg1 == 4 && arg2 == 32) { + if (rsimd && !sse3) { _gf_errno = GF_E_SP_SSE3; return 0; } + if (raltmap && !sse3) { _gf_errno = GF_E_SP_32AS; return 0; } + if (raltmap && rnosimd) { _gf_errno = GF_E_SP_32AS; return 0; } + } else { _gf_errno = GF_E_SP_32AR; return 0; } + } else if (w == 64) { + if ((arg1 == 8 && arg2 == 8) || + (arg1 == 8 && arg2 == 64) || + (arg1 == 16 && arg2 == 64)) { + if (rsimd || rnosimd) { _gf_errno = GF_E_SP_64_S; return 0; } + if (raltmap) { _gf_errno = GF_E_SP_64_A; return 0; } + } else if (arg1 == 4 && arg2 == 64) { + if (rsimd && !sse3) { _gf_errno = GF_E_SP_SSE3; return 0; } + if (raltmap && !sse3) { _gf_errno = GF_E_SP_64AS; return 0; } + if (raltmap && rnosimd) { _gf_errno = GF_E_SP_64AS; return 0; } + } else { _gf_errno = GF_E_SP_64AR; return 0; } + } else if (w == 128) { + if (arg1 == 8 && arg2 == 128) { + if (rsimd || rnosimd) { _gf_errno = GF_E_SP128_S; return 0; } + if (raltmap) { _gf_errno = GF_E_SP128_A; return 0; } + } else if (arg1 == 4 && arg2 == 128) { + if (rsimd && !sse3) { _gf_errno = GF_E_SP_SSE3; return 0; } + if (raltmap && !sse3) { _gf_errno = GF_E_SP128AS; return 0; } + if (raltmap && rnosimd) { _gf_errno = GF_E_SP128AS; return 0; } + } else { _gf_errno = GF_E_SP128AR; return 0; } + } else { _gf_errno = GF_E_SPLIT_W; return 0; } + return 1; + } + + if (mult_type == GF_MULT_COMPOSITE) { + if (w != 8 && w != 16 && w != 32 + && w != 64 && w != 128) { _gf_errno = GF_E_COMP__W; return 0; } + if (w < 128 && (poly >> (w/2)) != 0) { _gf_errno = GF_E_COMP_PP; return 0; } + if (divide_type != GF_DIVIDE_DEFAULT) { _gf_errno = GF_E_DIVCOMP; return 0; } + if (arg1 != 2) { _gf_errno = GF_E_COMP_A2; return 0; } + if (rsimd || rnosimd) { _gf_errno = GF_E_COMP_SS; return 0; } + if (base != NULL) { + sub = (gf_internal_t *) base->scratch; + if (sub->w != w/2) { _gf_errno = GF_E_BASE__W; return 0; } + if (poly == 0) { + if (gf_composite_get_default_poly(base) == 0) { _gf_errno = GF_E_COMPXPP; return 0; } + } + } + return 1; + } + + _gf_errno = GF_E_UNKNOWN; + return 0; +} + +int gf_scratch_size(int w, + int mult_type, + int region_type, + int divide_type, + int arg1, + int arg2) +{ + if (gf_error_check(w, mult_type, region_type, divide_type, arg1, arg2, 0, NULL) == 0) return 0; + + switch(w) { + case 4: return gf_w4_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + case 8: return gf_w8_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + case 16: return gf_w16_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + case 32: return gf_w32_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + case 64: return gf_w64_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + case 128: return gf_w128_scratch_size(mult_type, region_type, divide_type, arg1, arg2); + default: return gf_wgen_scratch_size(w, mult_type, region_type, divide_type, arg1, arg2); + } +} + +extern int gf_size(gf_t *gf) +{ + gf_internal_t *h; + int s; + + s = sizeof(gf_t); + h = (gf_internal_t *) gf->scratch; + s += gf_scratch_size(h->w, h->mult_type, h->region_type, h->divide_type, h->arg1, h->arg2); + if (h->mult_type == GF_MULT_COMPOSITE) s += gf_size(h->base_gf); + return s; +} + + +int gf_init_easy(gf_t *gf, int w) +{ + return gf_init_hard(gf, w, GF_MULT_DEFAULT, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT, + 0, 0, 0, NULL, NULL); +} + +/* Allen: What's going on here is this function is putting info into the + scratch mem of gf, and then calling the relevant REAL init + func for the word size. Probably done this way to consolidate + those aspects of initialization that don't rely on word size, + and then take care of word-size-specific stuff. */ + +int gf_init_hard(gf_t *gf, int w, int mult_type, + int region_type, + int divide_type, + uint64_t prim_poly, + int arg1, int arg2, + gf_t *base_gf, + void *scratch_memory) +{ + int sz; + gf_internal_t *h; + + gf_cpu_identify(); + + if (gf_error_check(w, mult_type, region_type, divide_type, + arg1, arg2, prim_poly, base_gf) == 0) return 0; + + sz = gf_scratch_size(w, mult_type, region_type, divide_type, arg1, arg2); + if (sz <= 0) return 0; /* This shouldn't happen, as all errors should get caught + in gf_error_check() */ + + if (scratch_memory == NULL) { + h = (gf_internal_t *) malloc(sz); + h->free_me = 1; + } else { + h = scratch_memory; + h->free_me = 0; + } + gf->scratch = (void *) h; + h->mult_type = mult_type; + h->region_type = region_type; + h->divide_type = divide_type; + h->w = w; + h->prim_poly = prim_poly; + h->arg1 = arg1; + h->arg2 = arg2; + h->base_gf = base_gf; + h->private = (void *) gf->scratch; + h->private = (uint8_t *)h->private + (sizeof(gf_internal_t)); + gf->extract_word.w32 = NULL; + + switch(w) { + case 4: return gf_w4_init(gf); + case 8: return gf_w8_init(gf); + case 16: return gf_w16_init(gf); + case 32: return gf_w32_init(gf); + case 64: return gf_w64_init(gf); + case 128: return gf_w128_init(gf); + default: return gf_wgen_init(gf); + } +} + +int gf_free(gf_t *gf, int recursive) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + if (recursive && h->base_gf != NULL) { + gf_free(h->base_gf, 1); + free(h->base_gf); + } + if (h->free_me) free(h); + return 0; /* Making compiler happy */ +} + +void gf_alignment_error(char *s, int a) +{ + fprintf(stderr, "Alignment error in %s:\n", s); + fprintf(stderr, " The source and destination buffers must be aligned to each other,\n"); + fprintf(stderr, " and they must be aligned to a %d-byte address.\n", a); + assert(0); +} + +static +void gf_invert_binary_matrix(uint32_t *mat, uint32_t *inv, int rows) { + int cols, i, j; + uint32_t tmp; + + cols = rows; + + for (i = 0; i < rows; i++) inv[i] = (1 << i); + + /* First -- convert into upper triangular */ + + for (i = 0; i < cols; i++) { + + /* Swap rows if we ave a zero i,i element. If we can't swap, then the + matrix was not invertible */ + + if ((mat[i] & (1 << i)) == 0) { + for (j = i+1; j < rows && (mat[j] & (1 << i)) == 0; j++) ; + if (j == rows) { + fprintf(stderr, "galois_invert_matrix: Matrix not invertible!!\n"); + assert(0); + } + tmp = mat[i]; mat[i] = mat[j]; mat[j] = tmp; + tmp = inv[i]; inv[i] = inv[j]; inv[j] = tmp; + } + + /* Now for each j>i, add A_ji*Ai to Aj */ + for (j = i+1; j != rows; j++) { + if ((mat[j] & (1 << i)) != 0) { + mat[j] ^= mat[i]; + inv[j] ^= inv[i]; + } + } + } + + /* Now the matrix is upper triangular. Start at the top and multiply down */ + + for (i = rows-1; i >= 0; i--) { + for (j = 0; j < i; j++) { + if (mat[j] & (1 << i)) { + /* mat[j] ^= mat[i]; */ + inv[j] ^= inv[i]; + } + } + } +} + +uint32_t gf_bitmatrix_inverse(uint32_t y, int w, uint32_t pp) +{ + uint32_t mat[32], inv[32], mask; + int i; + + mask = (w == 32) ? 0xffffffff : ((uint32_t)1 << w) - 1; + for (i = 0; i < w; i++) { + mat[i] = y; + + if (y & (1 << (w-1))) { + y = y << 1; + y = ((y ^ pp) & mask); + } else { + y = y << 1; + } + } + + gf_invert_binary_matrix(mat, inv, w); + return inv[0]; +} + +void gf_two_byte_region_table_multiply(gf_region_data *rd, uint16_t *base) +{ + uint64_t a, prod; + int xor; + uint64_t *s64, *d64, *top; + + s64 = rd->s_start; + d64 = rd->d_start; + top = rd->d_top; + xor = rd->xor; + + if (xor) { + while (d64 != top) { + a = *s64; + prod = base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + prod ^= *d64; + *d64 = prod; + s64++; + d64++; + } + } else { + while (d64 != top) { + a = *s64; + prod = base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + a <<= 16; + prod <<= 16; + prod ^= base[a >> 48]; + *d64 = prod; + s64++; + d64++; + } + } +} + +static void gf_slow_multiply_region(gf_region_data *rd, void *src, void *dest, void *s_top) +{ + uint8_t *s8, *d8; + uint16_t *s16, *d16; + uint32_t *s32, *d32; + uint64_t *s64, *d64; + gf_internal_t *h; + int wb; + uint32_t p, a; + + h = rd->gf->scratch; + wb = (h->w)/8; + if (wb == 0) wb = 1; + + while (src < s_top) { + switch (h->w) { + case 8: + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + *d8 = (rd->xor) ? (*d8 ^ rd->gf->multiply.w32(rd->gf, rd->val, *s8)) : + rd->gf->multiply.w32(rd->gf, rd->val, *s8); + break; + case 4: + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + a = *s8; + p = rd->gf->multiply.w32(rd->gf, rd->val, a&0xf); + p |= (rd->gf->multiply.w32(rd->gf, rd->val, a >> 4) << 4); + if (rd->xor) p ^= *d8; + *d8 = p; + break; + case 16: + s16 = (uint16_t *) src; + d16 = (uint16_t *) dest; + *d16 = (rd->xor) ? (*d16 ^ rd->gf->multiply.w32(rd->gf, rd->val, *s16)) : + rd->gf->multiply.w32(rd->gf, rd->val, *s16); + break; + case 32: + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + *d32 = (rd->xor) ? (*d32 ^ rd->gf->multiply.w32(rd->gf, rd->val, *s32)) : + rd->gf->multiply.w32(rd->gf, rd->val, *s32); + break; + case 64: + s64 = (uint64_t *) src; + d64 = (uint64_t *) dest; + *d64 = (rd->xor) ? (*d64 ^ rd->gf->multiply.w64(rd->gf, rd->val, *s64)) : + rd->gf->multiply.w64(rd->gf, rd->val, *s64); + break; + default: + fprintf(stderr, "Error: gf_slow_multiply_region: w=%d not implemented.\n", h->w); + exit(1); + } + src = (uint8_t *)src + wb; + dest = (uint8_t *)dest + wb; + } +} + +/* JSP - The purpose of this procedure is to error check alignment, + and to set up the region operation so that it can best leverage + large words. + + It stores its information in rd. + + Assuming you're not doing Cauchy coding, (see below for that), + then w will be 4, 8, 16, 32 or 64. It can't be 128 (probably + should change that). + + src and dest must then be aligned on ceil(w/8)-byte boundaries. + Moreover, bytes must be a multiple of ceil(w/8). If the variable + align is equal to ceil(w/8), then we will set s_start = src, + d_start = dest, s_top to (src+bytes) and d_top to (dest+bytes). + And we return -- the implementation will go ahead and do the + multiplication on individual words (e.g. using discrete logs). + + If align is greater than ceil(w/8), then the implementation needs + to work on groups of "align" bytes. For example, suppose you are + implementing BYTWO, without SSE. Then you will be doing the region + multiplication in units of 8 bytes, so align = 8. Or, suppose you + are doing a Quad table in GF(2^4). You will be doing the region + multiplication in units of 2 bytes, so align = 2. Or, suppose you + are doing split multiplication with SSE operations in GF(2^8). + Then align = 16. Worse yet, suppose you are doing split + multiplication with SSE operations in GF(2^16), with or without + ALTMAP. Then, you will be doing the multiplication on 256 bits at + a time. So align = 32. + + When align does not equal ceil(w/8), we split the region + multiplication into three parts. We are going to make s_start be + the first address greater than or equal to src that is a multiple + of align. s_top is going to be the largest address >= src+bytes + such that (s_top - s_start) is a multiple of align. We do the + same with d_start and d_top. When we say that "src and dest must + be aligned with respect to each other, we mean that s_start-src + must equal d_start-dest. + + Now, the region multiplication is done in three parts -- the part + between src and s_start must be done using single words. + Similarly, the part between s_top and src+bytes must also be done + using single words. The part between s_start and s_top will be + done in chunks of "align" bytes. + + One final thing -- if align > 16, then s_start and d_start will be + aligned on a 16 byte boundary. Perhaps we should have two + variables: align and chunksize. Then we'd have s_start & d_start + aligned to "align", and have s_top-s_start be a multiple of + chunksize. That may be less confusing, but it would be a big + change. + + Finally, if align = -1, then we are doing Cauchy multiplication, + using only XOR's. In this case, we're not going to care about + alignment because we are just doing XOR's. Instead, the only + thing we care about is that bytes must be a multiple of w. + + This is not to say that alignment doesn't matter in performance + with XOR's. See that discussion in gf_multby_one(). + + After you call gf_set_region_data(), the procedure + gf_do_initial_region_alignment() calls gf->multiply.w32() on + everything between src and s_start. The procedure + gf_do_final_region_alignment() calls gf->multiply.w32() on + everything between s_top and src+bytes. + */ + +void gf_set_region_data(gf_region_data *rd, + gf_t *gf, + void *src, + void *dest, + int bytes, + uint64_t val, + int xor, + int align) +{ + gf_internal_t *h = NULL; + int wb; + uint32_t a; + unsigned long uls, uld; + + if (gf == NULL) { /* JSP - Can be NULL if you're just doing XOR's */ + wb = 1; + } else { + h = gf->scratch; + wb = (h->w)/8; + if (wb == 0) wb = 1; + } + + rd->gf = gf; + rd->src = src; + rd->dest = dest; + rd->bytes = bytes; + rd->val = val; + rd->xor = xor; + rd->align = align; + + uls = (unsigned long) src; + uld = (unsigned long) dest; + + a = (align <= 16) ? align : 16; + + if (align == -1) { /* JSP: This is cauchy. Error check bytes, then set up the pointers + so that there are no alignment regions. */ + if (h != NULL && bytes % h->w != 0) { + fprintf(stderr, "Error in region multiply operation.\n"); + fprintf(stderr, "The size must be a multiple of %d bytes.\n", h->w); + assert(0); + } + + rd->s_start = src; + rd->d_start = dest; + rd->s_top = (uint8_t *)src + bytes; + rd->d_top = (uint8_t *)src + bytes; + return; + } + + if (uls % a != uld % a) { + fprintf(stderr, "Error in region multiply operation.\n"); + fprintf(stderr, "The source & destination pointers must be aligned with respect\n"); + fprintf(stderr, "to each other along a %d byte boundary.\n", a); + fprintf(stderr, "Src = 0x%lx. Dest = 0x%lx\n", (unsigned long) src, + (unsigned long) dest); + assert(0); + } + + if (uls % wb != 0) { + fprintf(stderr, "Error in region multiply operation.\n"); + fprintf(stderr, "The pointers must be aligned along a %d byte boundary.\n", wb); + fprintf(stderr, "Src = 0x%lx. Dest = 0x%lx\n", (unsigned long) src, + (unsigned long) dest); + assert(0); + } + + if (bytes % wb != 0) { + fprintf(stderr, "Error in region multiply operation.\n"); + fprintf(stderr, "The size must be a multiple of %d bytes.\n", wb); + assert(0); + } + + uls %= a; + if (uls != 0) uls = (a-uls); + rd->s_start = (uint8_t *)rd->src + uls; + rd->d_start = (uint8_t *)rd->dest + uls; + bytes -= uls; + bytes -= (bytes % align); + rd->s_top = (uint8_t *)rd->s_start + bytes; + rd->d_top = (uint8_t *)rd->d_start + bytes; + +} + +void gf_do_initial_region_alignment(gf_region_data *rd) +{ + gf_slow_multiply_region(rd, rd->src, rd->dest, rd->s_start); +} + +void gf_do_final_region_alignment(gf_region_data *rd) +{ + gf_slow_multiply_region(rd, rd->s_top, rd->d_top, (uint8_t *)rd->src+rd->bytes); +} + +void gf_multby_zero(void *dest, int bytes, int xor) +{ + if (xor) return; + bzero(dest, bytes); + return; +} + +/* JSP - gf_multby_one tries to do this in the most efficient way + possible. If xor = 0, then simply call memcpy() since that + should be optimized by the system. Otherwise, try to do the xor + in the following order: + + If src and dest are aligned with respect to each other on 16-byte + boundaries and you have SSE instructions, then use aligned SSE + instructions. + + If they aren't but you still have SSE instructions, use unaligned + SSE instructions. + + If there are no SSE instructions, but they are aligned with + respect to each other on 8-byte boundaries, then do them with + uint64_t's. + + Otherwise, call gf_unaligned_xor(), which does the following: + align a destination pointer along an 8-byte boundary, and then + memcpy 32 bytes at a time from the src pointer to an array of + doubles. I'm not sure if that's the best -- probably needs + testing, but this seems like it could be a black hole. + */ + +static void gf_unaligned_xor(void *src, void *dest, int bytes); + +void gf_multby_one(void *src, void *dest, int bytes, int xor) +{ + unsigned long uls, uld; + uint8_t *s8, *d8; + uint64_t *s64, *d64, *dtop64; + gf_region_data rd; + + if (!xor) { + if (dest != src) + memcpy(dest, src, bytes); + return; + } + uls = (unsigned long) src; + uld = (unsigned long) dest; + +#ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2) { + __m128i ms, md; + int abytes; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + if (uls % 16 == uld % 16) { + gf_set_region_data(&rd, NULL, src, dest, bytes, 1, xor, 16); + while (s8 != rd.s_start) { + *d8 ^= *s8; + d8++; + s8++; + } + while (s8 < (uint8_t *) rd.s_top) { + ms = _mm_load_si128 ((__m128i *)(s8)); + md = _mm_load_si128 ((__m128i *)(d8)); + md = _mm_xor_si128(md, ms); + _mm_store_si128((__m128i *)(d8), md); + s8 += 16; + d8 += 16; + } + while (s8 != (uint8_t *) src + bytes) { + *d8 ^= *s8; + d8++; + s8++; + } + return; + } + + abytes = (bytes & 0xfffffff0); + + while (d8 < (uint8_t *) dest + abytes) { + ms = _mm_loadu_si128 ((__m128i *)(s8)); + md = _mm_loadu_si128 ((__m128i *)(d8)); + md = _mm_xor_si128(md, ms); + _mm_storeu_si128((__m128i *)(d8), md); + s8 += 16; + d8 += 16; + } + while (d8 != (uint8_t *) dest+bytes) { + *d8 ^= *s8; + d8++; + s8++; + } + return; + } +#endif +#if defined(ARM_NEON) + if (gf_cpu_supports_arm_neon) { + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + if (uls % 16 == uld % 16) { + gf_set_region_data(&rd, NULL, src, dest, bytes, 1, xor, 16); + while (s8 != rd.s_start) { + *d8 ^= *s8; + s8++; + d8++; + } + while (s8 < (uint8_t *) rd.s_top) { + uint8x16_t vs = vld1q_u8 (s8); + uint8x16_t vd = vld1q_u8 (d8); + uint8x16_t vr = veorq_u8 (vs, vd); + vst1q_u8 (d8, vr); + s8 += 16; + d8 += 16; + } + } else { + while (s8 + 15 < (uint8_t *) src + bytes) { + uint8x16_t vs = vld1q_u8 (s8); + uint8x16_t vd = vld1q_u8 (d8); + uint8x16_t vr = veorq_u8 (vs, vd); + vst1q_u8 (d8, vr); + s8 += 16; + d8 += 16; + } + } + while (s8 < (uint8_t *) src + bytes) { + *d8 ^= *s8; + s8++; + d8++; + } + return; + } +#endif + if (uls % 8 != uld % 8) { + gf_unaligned_xor(src, dest, bytes); + return; + } + + gf_set_region_data(&rd, NULL, src, dest, bytes, 1, xor, 8); + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + while (d8 != rd.d_start) { + *d8 ^= *s8; + d8++; + s8++; + } + dtop64 = (uint64_t *) rd.d_top; + + d64 = (uint64_t *) rd.d_start; + s64 = (uint64_t *) rd.s_start; + + while (d64 < dtop64) { + *d64 ^= *s64; + d64++; + s64++; + } + + s8 = (uint8_t *) rd.s_top; + d8 = (uint8_t *) rd.d_top; + + while (d8 != (uint8_t *) dest+bytes) { + *d8 ^= *s8; + d8++; + s8++; + } + return; +} + +#define UNALIGNED_BUFSIZE (8) + +static void gf_unaligned_xor(void *src, void *dest, int bytes) +{ + uint64_t scopy[UNALIGNED_BUFSIZE], *d64; + int i; + gf_region_data rd; + uint8_t *s8, *d8; + + /* JSP - call gf_set_region_data(), but use dest in both places. This is + because I only want to set up dest. If I used src, gf_set_region_data() + would fail because src and dest are not aligned to each other wrt + 8-byte pointers. I know this will actually align d_start to 16 bytes. + If I change gf_set_region_data() to split alignment & chunksize, then + I could do this correctly. */ + + gf_set_region_data(&rd, NULL, dest, dest, bytes, 1, 1, 8*UNALIGNED_BUFSIZE); + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + while (d8 < (uint8_t *) rd.d_start) { + *d8 ^= *s8; + d8++; + s8++; + } + + d64 = (uint64_t *) d8; + while (d64 < (uint64_t *) rd.d_top) { + memcpy(scopy, s8, 8*UNALIGNED_BUFSIZE); + s8 += 8*UNALIGNED_BUFSIZE; + for (i = 0; i < UNALIGNED_BUFSIZE; i++) { + *d64 ^= scopy[i]; + d64++; + } + } + + d8 = (uint8_t *) d64; + while (d8 < (uint8_t *) ((uint8_t *)dest+bytes)) { + *d8 ^= *s8; + d8++; + s8++; + } +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_cpu.c b/src/erasure-code/jerasure/gf-complete/src/gf_cpu.c new file mode 100644 index 00000000..f65131f5 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_cpu.c @@ -0,0 +1,180 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_cpu.h + * + * Identifies whether the CPU supports SIMD instructions at runtime. + */ + +#include +#include + +int gf_cpu_identified = 0; + +int gf_cpu_supports_intel_pclmul = 0; +int gf_cpu_supports_intel_sse4 = 0; +int gf_cpu_supports_intel_ssse3 = 0; +int gf_cpu_supports_intel_sse3 = 0; +int gf_cpu_supports_intel_sse2 = 0; +int gf_cpu_supports_arm_neon = 0; + +#if defined(__x86_64__) + +/* CPUID Feature Bits */ + +/* ECX */ +#define GF_CPU_SSE3 (1 << 0) +#define GF_CPU_PCLMUL (1 << 1) +#define GF_CPU_SSSE3 (1 << 9) +#define GF_CPU_SSE41 (1 << 19) +#define GF_CPU_SSE42 (1 << 20) + +/* EDX */ +#define GF_CPU_SSE2 (1 << 26) + +#if defined(_MSC_VER) + +#define cpuid(info, x) __cpuidex(info, x, 0) + +#elif defined(__GNUC__) + +#include +void cpuid(int info[4], int InfoType){ + __cpuid_count(InfoType, 0, info[0], info[1], info[2], info[3]); +} + +#else + +#error please add a way to detect CPU SIMD support at runtime + +#endif + +void gf_cpu_identify(void) +{ + if (gf_cpu_identified) { + return; + } + + int reg[4]; + + cpuid(reg, 1); + +#if defined(INTEL_SSE4_PCLMUL) + if ((reg[2] & GF_CPU_PCLMUL) != 0 && !getenv("GF_COMPLETE_DISABLE_SSE4_PCLMUL")) { + gf_cpu_supports_intel_pclmul = 1; +#ifdef DEBUG_CPU_DETECTION + printf("#gf_cpu_supports_intel_pclmul\n"); +#endif + } +#endif + +#if defined(INTEL_SSE4) + if (((reg[2] & GF_CPU_SSE42) != 0 || (reg[2] & GF_CPU_SSE41) != 0) && !getenv("GF_COMPLETE_DISABLE_SSE4")) { + gf_cpu_supports_intel_sse4 = 1; +#ifdef DEBUG_CPU_DETECTION + printf("#gf_cpu_supports_intel_sse4\n"); +#endif + } +#endif + +#if defined(INTEL_SSSE3) + if ((reg[2] & GF_CPU_SSSE3) != 0 && !getenv("GF_COMPLETE_DISABLE_SSSE3")) { + gf_cpu_supports_intel_ssse3 = 1; +#ifdef DEBUG_CPU_DETECTION + printf("#gf_cpu_supports_intel_ssse3\n"); +#endif + } +#endif + +#if defined(INTEL_SSE3) + if ((reg[2] & GF_CPU_SSE3) != 0 && !getenv("GF_COMPLETE_DISABLE_SSE3")) { + gf_cpu_supports_intel_sse3 = 1; +#ifdef DEBUG_CPU_DETECTION + printf("#gf_cpu_supports_intel_sse3\n"); +#endif + } +#endif + +#if defined(INTEL_SSE2) + if ((reg[3] & GF_CPU_SSE2) != 0 && !getenv("GF_COMPLETE_DISABLE_SSE2")) { + gf_cpu_supports_intel_sse2 = 1; +#ifdef DEBUG_CPU_DETECTION + printf("#gf_cpu_supports_intel_sse2\n"); +#endif + } +#endif + + gf_cpu_identified = 1; +} + +#elif defined(__arm__) || defined(__aarch64__) + +#ifdef __linux__ + +#include +#include +#include +#include +#include +#include + +unsigned long get_hwcap(unsigned long type) { + unsigned long hwcap = 0; + int fd = open("/proc/self/auxv", O_RDONLY); + if (fd > 0) { + Elf32_auxv_t auxv; + while (read(fd, &auxv, sizeof(Elf32_auxv_t))) { + if (auxv.a_type == type) { + hwcap = auxv.a_un.a_val; + break; + } + } + close(fd); + } + + return hwcap; +} + +#endif // linux + +void gf_cpu_identify(void) +{ + if (gf_cpu_identified) { + return; + } + +#if defined(ARM_NEON) + if (!getenv("GF_COMPLETE_DISABLE_NEON")) { +#if __linux__ && __arm__ + gf_cpu_supports_arm_neon = (get_hwcap(AT_HWCAP) & HWCAP_NEON) > 0; +#elif __aarch64__ + // ASIMD is supported on all aarch64 architectures + gf_cpu_supports_arm_neon = 1; +#else + // we assume that NEON is supported if the compiler supports + // NEON and we dont have a reliable way to detect runtime support. + gf_cpu_supports_arm_neon = 1; +#endif + +#ifdef DEBUG_CPU_DETECTION + if (gf_cpu_supports_arm_neon) { + printf("#gf_cpu_supports_arm_neon\n"); + } +#endif + } +#endif // defined(ARM_NEON) + + gf_cpu_identified = 1; +} + +#else // defined(__arm__) || defined(__aarch64__) + +int gf_cpu_identify(void) +{ + gf_cpu_identified = 1; + return 0; +} + +#endif diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_general.c b/src/erasure-code/jerasure/gf-complete/src/gf_general.c new file mode 100644 index 00000000..769f7a08 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_general.c @@ -0,0 +1,539 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_general.c + * + * This file has helper routines for doing basic GF operations with any + * legal value of w. The problem is that w <= 32, w=64 and w=128 all have + * different data types, which is a pain. The procedures in this file try + * to alleviate that pain. They are used in gf_unit and gf_time. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_int.h" +#include "gf_method.h" +#include "gf_rand.h" +#include "gf_general.h" + +void gf_general_set_zero(gf_general_t *v, int w) +{ + if (w <= 32) { + v->w32 = 0; + } else if (w <= 64) { + v->w64 = 0; + } else { + v->w128[0] = 0; + v->w128[1] = 0; + } +} + +void gf_general_set_one(gf_general_t *v, int w) +{ + if (w <= 32) { + v->w32 = 1; + } else if (w <= 64) { + v->w64 = 1; + } else { + v->w128[0] = 0; + v->w128[1] = 1; + } +} + +void gf_general_set_two(gf_general_t *v, int w) +{ + if (w <= 32) { + v->w32 = 2; + } else if (w <= 64) { + v->w64 = 2; + } else { + v->w128[0] = 0; + v->w128[1] = 2; + } +} + +int gf_general_is_zero(gf_general_t *v, int w) +{ + if (w <= 32) { + return (v->w32 == 0); + } else if (w <= 64) { + return (v->w64 == 0); + } else { + return (v->w128[0] == 0 && v->w128[1] == 0); + } +} + +int gf_general_is_one(gf_general_t *v, int w) +{ + if (w <= 32) { + return (v->w32 == 1); + } else if (w <= 64) { + return (v->w64 == 1); + } else { + return (v->w128[0] == 0 && v->w128[1] == 1); + } +} + +void gf_general_set_random(gf_general_t *v, int w, int zero_ok) +{ + if (w <= 32) { + v->w32 = MOA_Random_W(w, zero_ok); + } else if (w <= 64) { + while (1) { + v->w64 = MOA_Random_64(); + if (v->w64 != 0 || zero_ok) return; + } + } else { + while (1) { + MOA_Random_128(v->w128); + if (v->w128[0] != 0 || v->w128[1] != 0 || zero_ok) return; + } + } +} + +void gf_general_val_to_s(gf_general_t *v, int w, char *s, int hex) +{ + if (w <= 32) { + if (hex) { + sprintf(s, "%x", v->w32); + } else { + sprintf(s, "%u", v->w32); + } + } else if (w <= 64) { + if (hex) { + sprintf(s, "%llx", (long long unsigned int) v->w64); + } else { + sprintf(s, "%lld", (long long unsigned int) v->w64); + } + } else { + if (v->w128[0] == 0) { + sprintf(s, "%llx", (long long unsigned int) v->w128[1]); + } else { + sprintf(s, "%llx%016llx", (long long unsigned int) v->w128[0], + (long long unsigned int) v->w128[1]); + } + } +} + +int gf_general_s_to_val(gf_general_t *v, int w, char *s, int hex) +{ + int l; + int save; + + if (w <= 32) { + if (hex) { + if (sscanf(s, "%x", &(v->w32)) == 0) return 0; + } else { + if (sscanf(s, "%u", &(v->w32)) == 0) return 0; + } + if (w == 32) return 1; + if (w == 31) { + if (v->w32 & ((gf_val_32_t)1 << 31)) return 0; + return 1; + } + if (v->w32 & ~((1 << w)-1)) return 0; + return 1; + } else if (w <= 64) { + if (hex) return (sscanf(s, "%llx", (long long unsigned int *) (&(v->w64))) == 1); + return (sscanf(s, "%lld", (long long int *) (&(v->w64))) == 1); + } else { + if (!hex) return 0; + l = strlen(s); + if (l <= 16) { + v->w128[0] = 0; + return (sscanf(s, "%llx", (long long unsigned int *) (&(v->w128[1]))) == 1); + } else { + if (l > 32) return 0; + save = s[l-16]; + s[l-16] = '\0'; + if (sscanf(s, "%llx", (long long unsigned int *) (&(v->w128[0]))) == 0) { + s[l-16] = save; + return 0; + } + return (sscanf(s+(l-16), "%llx", (long long unsigned int *) (&(v->w128[1]))) == 1); + } + } +} + +void gf_general_add(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c) +{ + gf_internal_t *h; + int w; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + if (w <= 32) { + c->w32 = a->w32 ^ b->w32; + } else if (w <= 64) { + c->w64 = a->w64 ^ b->w64; + } else { + c->w128[0] = a->w128[0] ^ b->w128[0]; + c->w128[1] = a->w128[1] ^ b->w128[1]; + } +} + +void gf_general_multiply(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c) +{ + gf_internal_t *h; + int w; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + if (w <= 32) { + c->w32 = gf->multiply.w32(gf, a->w32, b->w32); + } else if (w <= 64) { + c->w64 = gf->multiply.w64(gf, a->w64, b->w64); + } else { + gf->multiply.w128(gf, a->w128, b->w128, c->w128); + } +} + +void gf_general_divide(gf_t *gf, gf_general_t *a, gf_general_t *b, gf_general_t *c) +{ + gf_internal_t *h; + int w; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + if (w <= 32) { + c->w32 = gf->divide.w32(gf, a->w32, b->w32); + } else if (w <= 64) { + c->w64 = gf->divide.w64(gf, a->w64, b->w64); + } else { + gf->divide.w128(gf, a->w128, b->w128, c->w128); + } +} + +void gf_general_inverse(gf_t *gf, gf_general_t *a, gf_general_t *b) +{ + gf_internal_t *h; + int w; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + if (w <= 32) { + b->w32 = gf->inverse.w32(gf, a->w32); + } else if (w <= 64) { + b->w64 = gf->inverse.w64(gf, a->w64); + } else { + gf->inverse.w128(gf, a->w128, b->w128); + } +} + +int gf_general_are_equal(gf_general_t *v1, gf_general_t *v2, int w) +{ + if (w <= 32) { + return (v1->w32 == v2->w32); + } else if (w <= 64) { + return (v1->w64 == v2->w64); + } else { + return (v1->w128[0] == v2->w128[0] && + v1->w128[1] == v2->w128[1]); + } +} + +void gf_general_do_region_multiply(gf_t *gf, gf_general_t *a, void *ra, void *rb, int bytes, int xor) +{ + gf_internal_t *h; + int w; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + if (w <= 32) { + gf->multiply_region.w32(gf, ra, rb, a->w32, bytes, xor); + } else if (w <= 64) { + gf->multiply_region.w64(gf, ra, rb, a->w64, bytes, xor); + } else { + gf->multiply_region.w128(gf, ra, rb, a->w128, bytes, xor); + } +} + +void gf_general_do_region_check(gf_t *gf, gf_general_t *a, void *orig_a, void *orig_target, void *final_target, int bytes, int xor) +{ + gf_internal_t *h; + int w, words, i; + gf_general_t oa, ot, ft, sb; + char sa[50], soa[50], sot[50], sft[50], ssb[50]; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + + words = (bytes * 8) / w; + for (i = 0; i < words; i++) { + if (w <= 32) { + oa.w32 = gf->extract_word.w32(gf, orig_a, bytes, i); + ot.w32 = gf->extract_word.w32(gf, orig_target, bytes, i); + ft.w32 = gf->extract_word.w32(gf, final_target, bytes, i); + sb.w32 = gf->multiply.w32(gf, a->w32, oa.w32); + if (xor) sb.w32 ^= ot.w32; + } else if (w <= 64) { + oa.w64 = gf->extract_word.w64(gf, orig_a, bytes, i); + ot.w64 = gf->extract_word.w64(gf, orig_target, bytes, i); + ft.w64 = gf->extract_word.w64(gf, final_target, bytes, i); + sb.w64 = gf->multiply.w64(gf, a->w64, oa.w64); + if (xor) sb.w64 ^= ot.w64; + } else { + gf->extract_word.w128(gf, orig_a, bytes, i, oa.w128); + gf->extract_word.w128(gf, orig_target, bytes, i, ot.w128); + gf->extract_word.w128(gf, final_target, bytes, i, ft.w128); + gf->multiply.w128(gf, a->w128, oa.w128, sb.w128); + if (xor) { + sb.w128[0] ^= ot.w128[0]; + sb.w128[1] ^= ot.w128[1]; + } + } + + if (!gf_general_are_equal(&ft, &sb, w)) { + + fprintf(stderr,"Problem with region multiply (all values in hex):\n"); + fprintf(stderr," Target address base: 0x%lx. Word 0x%x of 0x%x. Xor: %d\n", + (unsigned long) final_target, i, words, xor); + gf_general_val_to_s(a, w, sa, 1); + gf_general_val_to_s(&oa, w, soa, 1); + gf_general_val_to_s(&ot, w, sot, 1); + gf_general_val_to_s(&ft, w, sft, 1); + gf_general_val_to_s(&sb, w, ssb, 1); + fprintf(stderr," Value: %s\n", sa); + fprintf(stderr," Original source word: %s\n", soa); + if (xor) fprintf(stderr," XOR with target word: %s\n", sot); + fprintf(stderr," Product word: %s\n", sft); + fprintf(stderr," It should be: %s\n", ssb); + assert(0); + } + } +} + +void gf_general_set_up_single_timing_test(int w, void *ra, void *rb, int size) +{ + void *top; + gf_general_t g; + uint8_t *r8, *r8a; + uint16_t *r16; + uint32_t *r32; + uint64_t *r64; + int i; + + top = (uint8_t *)rb+size; + + /* If w is 8, 16, 32, 64 or 128, fill the regions with random bytes. + However, don't allow for zeros in rb, because that will screw up + division. + + When w is 4, you fill the regions with random 4-bit words in each byte. + + Otherwise, treat every four bytes as an uint32_t + and fill it with a random value mod (1 << w). + */ + + if (w == 8 || w == 16 || w == 32 || w == 64 || w == 128) { + MOA_Fill_Random_Region (ra, size); + while (rb < top) { + gf_general_set_random(&g, w, 0); + switch (w) { + case 8: + r8 = (uint8_t *) rb; + *r8 = g.w32; + break; + case 16: + r16 = (uint16_t *) rb; + *r16 = g.w32; + break; + case 32: + r32 = (uint32_t *) rb; + *r32 = g.w32; + break; + case 64: + r64 = (uint64_t *) rb; + *r64 = g.w64; + break; + case 128: + r64 = (uint64_t *) rb; + r64[0] = g.w128[0]; + r64[1] = g.w128[1]; + break; + } + rb = (uint8_t *)rb + (w/8); + } + } else if (w == 4) { + r8a = (uint8_t *) ra; + r8 = (uint8_t *) rb; + while (r8 < (uint8_t *) top) { + gf_general_set_random(&g, w, 1); + *r8a = g.w32; + gf_general_set_random(&g, w, 0); + *r8 = g.w32; + r8a++; + r8++; + } + } else { + r32 = (uint32_t *) ra; + for (i = 0; i < size/4; i++) r32[i] = MOA_Random_W(w, 1); + r32 = (uint32_t *) rb; + for (i = 0; i < size/4; i++) r32[i] = MOA_Random_W(w, 0); + } +} + +/* This sucks, but in order to time, you really need to avoid putting ifs in + the inner loops. So, I'm doing a separate timing test for each w: + (4 & 8), 16, 32, 64, 128 and everything else. Fortunately, the "everything else" + tests can be equivalent to w=32. + + I'm also putting the results back into ra, because otherwise, the optimizer might + figure out that we're not really doing anything in the inner loops and it + will chuck that. */ + +int gf_general_do_single_timing_test(gf_t *gf, void *ra, void *rb, int size, char test) +{ + gf_internal_t *h; + void *top; + uint8_t *r8a, *r8b, *top8; + uint16_t *r16a, *r16b, *top16; + uint32_t *r32a, *r32b, *top32; + uint64_t *r64a, *r64b, *top64, *r64c; + int w, rv; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + top = (uint8_t *)ra + size; + + if (w == 8 || w == 4) { + r8a = (uint8_t *) ra; + r8b = (uint8_t *) rb; + top8 = (uint8_t *) top; + if (test == 'M') { + while (r8a < top8) { + *r8a = gf->multiply.w32(gf, *r8a, *r8b); + r8a++; + r8b++; + } + } else if (test == 'D') { + while (r8a < top8) { + *r8a = gf->divide.w32(gf, *r8a, *r8b); + r8a++; + r8b++; + } + } else if (test == 'I') { + while (r8a < top8) { + *r8a = gf->inverse.w32(gf, *r8a); + r8a++; + } + } + return (top8 - (uint8_t *) ra); + } + + if (w == 16) { + r16a = (uint16_t *) ra; + r16b = (uint16_t *) rb; + top16 = (uint16_t *) top; + if (test == 'M') { + while (r16a < top16) { + *r16a = gf->multiply.w32(gf, *r16a, *r16b); + r16a++; + r16b++; + } + } else if (test == 'D') { + while (r16a < top16) { + *r16a = gf->divide.w32(gf, *r16a, *r16b); + r16a++; + r16b++; + } + } else if (test == 'I') { + while (r16a < top16) { + *r16a = gf->inverse.w32(gf, *r16a); + r16a++; + } + } + return (top16 - (uint16_t *) ra); + } + if (w <= 32) { + r32a = (uint32_t *) ra; + r32b = (uint32_t *) rb; + top32 = (uint32_t *) ra + (size/4); /* This is for the "everything elses" */ + + if (test == 'M') { + while (r32a < top32) { + *r32a = gf->multiply.w32(gf, *r32a, *r32b); + r32a++; + r32b++; + } + } else if (test == 'D') { + while (r32a < top32) { + *r32a = gf->divide.w32(gf, *r32a, *r32b); + r32a++; + r32b++; + } + } else if (test == 'I') { + while (r32a < top32) { + *r32a = gf->inverse.w32(gf, *r32a); + r32a++; + } + } + return (top32 - (uint32_t *) ra); + } + if (w == 64) { + r64a = (uint64_t *) ra; + r64b = (uint64_t *) rb; + top64 = (uint64_t *) top; + if (test == 'M') { + while (r64a < top64) { + *r64a = gf->multiply.w64(gf, *r64a, *r64b); + r64a++; + r64b++; + } + } else if (test == 'D') { + while (r64a < top64) { + *r64a = gf->divide.w64(gf, *r64a, *r64b); + r64a++; + r64b++; + } + } else if (test == 'I') { + while (r64a < top64) { + *r64a = gf->inverse.w64(gf, *r64a); + r64a++; + } + } + return (top64 - (uint64_t *) ra); + } + if (w == 128) { + r64a = (uint64_t *) ra; + r64c = r64a; + r64a += 2; + r64b = (uint64_t *) rb; + top64 = (uint64_t *) top; + rv = (top64 - r64a)/2; + if (test == 'M') { + while (r64a < top64) { + gf->multiply.w128(gf, r64a, r64b, r64c); + r64a += 2; + r64b += 2; + } + } else if (test == 'D') { + while (r64a < top64) { + gf->divide.w128(gf, r64a, r64b, r64c); + r64a += 2; + r64b += 2; + } + } else if (test == 'I') { + while (r64a < top64) { + gf->inverse.w128(gf, r64a, r64c); + r64a += 2; + } + } + return rv; + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_method.c b/src/erasure-code/jerasure/gf-complete/src/gf_method.c new file mode 100644 index 00000000..2210305d --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_method.c @@ -0,0 +1,193 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_method.c + * + * Parses argv to figure out the mult_type and arguments. Returns the gf. + */ + +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_int.h" +#include "gf_method.h" + +int create_gf_from_argv(gf_t *gf, int w, int argc, char **argv, int starting) +{ + int mult_type, divide_type, region_type; + int arg1, arg2; + uint64_t prim_poly; + gf_t *base; + + mult_type = GF_MULT_DEFAULT; + region_type = GF_REGION_DEFAULT; + divide_type = GF_DIVIDE_DEFAULT; + prim_poly = 0; + base = NULL; + arg1 = 0; + arg2 = 0; + while (1) { + if (argc > starting) { + if (strcmp(argv[starting], "-m") == 0) { + starting++; + if (mult_type != GF_MULT_DEFAULT) { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_TWOMULT; + return 0; + } + if (strcmp(argv[starting], "SHIFT") == 0) { + mult_type = GF_MULT_SHIFT; + starting++; + } else if (strcmp(argv[starting], "CARRY_FREE") == 0) { + mult_type = GF_MULT_CARRY_FREE; + starting++; + } else if (strcmp(argv[starting], "CARRY_FREE_GK") == 0) { + mult_type = GF_MULT_CARRY_FREE_GK; + starting++; + } else if (strcmp(argv[starting], "GROUP") == 0) { + mult_type = GF_MULT_GROUP; + if (argc < starting + 3) { + _gf_errno = GF_E_GROUPAR; + return 0; + } + if (sscanf(argv[starting+1], "%d", &arg1) == 0 || + sscanf(argv[starting+2], "%d", &arg2) == 0) { + _gf_errno = GF_E_GROUPNU; + return 0; + } + starting += 3; + } else if (strcmp(argv[starting], "BYTWO_p") == 0) { + mult_type = GF_MULT_BYTWO_p; + starting++; + } else if (strcmp(argv[starting], "BYTWO_b") == 0) { + mult_type = GF_MULT_BYTWO_b; + starting++; + } else if (strcmp(argv[starting], "TABLE") == 0) { + mult_type = GF_MULT_TABLE; + starting++; + } else if (strcmp(argv[starting], "LOG") == 0) { + mult_type = GF_MULT_LOG_TABLE; + starting++; + } else if (strcmp(argv[starting], "LOG_ZERO") == 0) { + mult_type = GF_MULT_LOG_ZERO; + starting++; + } else if (strcmp(argv[starting], "LOG_ZERO_EXT") == 0) { + mult_type = GF_MULT_LOG_ZERO_EXT; + starting++; + } else if (strcmp(argv[starting], "SPLIT") == 0) { + mult_type = GF_MULT_SPLIT_TABLE; + if (argc < starting + 3) { + _gf_errno = GF_E_SPLITAR; + return 0; + } + if (sscanf(argv[starting+1], "%d", &arg1) == 0 || + sscanf(argv[starting+2], "%d", &arg2) == 0) { + _gf_errno = GF_E_SPLITNU; + return 0; + } + starting += 3; + } else if (strcmp(argv[starting], "COMPOSITE") == 0) { + mult_type = GF_MULT_COMPOSITE; + if (argc < starting + 2) { _gf_errno = GF_E_FEWARGS; return 0; } + if (sscanf(argv[starting+1], "%d", &arg1) == 0) { + _gf_errno = GF_E_COMP_A2; + return 0; + } + starting += 2; + base = (gf_t *) malloc(sizeof(gf_t)); + starting = create_gf_from_argv(base, w/arg1, argc, argv, starting); + if (starting == 0) { + free(base); + return 0; + } + } else { + _gf_errno = GF_E_UNKNOWN; + return 0; + } + } else if (strcmp(argv[starting], "-r") == 0) { + starting++; + if (strcmp(argv[starting], "DOUBLE") == 0) { + region_type |= GF_REGION_DOUBLE_TABLE; + starting++; + } else if (strcmp(argv[starting], "QUAD") == 0) { + region_type |= GF_REGION_QUAD_TABLE; + starting++; + } else if (strcmp(argv[starting], "LAZY") == 0) { + region_type |= GF_REGION_LAZY; + starting++; + } else if (strcmp(argv[starting], "SIMD") == 0) { + region_type |= GF_REGION_SIMD; + starting++; + } else if (strcmp(argv[starting], "NOSIMD") == 0) { + region_type |= GF_REGION_NOSIMD; + starting++; + } else if (strcmp(argv[starting], "SSE") == 0) { + region_type |= GF_REGION_SIMD; + starting++; + } else if (strcmp(argv[starting], "NOSSE") == 0) { + region_type |= GF_REGION_NOSIMD; + starting++; + } else if (strcmp(argv[starting], "CAUCHY") == 0) { + region_type |= GF_REGION_CAUCHY; + starting++; + } else if (strcmp(argv[starting], "ALTMAP") == 0) { + region_type |= GF_REGION_ALTMAP; + starting++; + } else { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_UNK_REG; + return 0; + } + } else if (strcmp(argv[starting], "-p") == 0) { + starting++; + if (sscanf(argv[starting], "%llx", (long long unsigned int *)(&prim_poly)) == 0) { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_POLYSPC; + return 0; + } + starting++; + } else if (strcmp(argv[starting], "-d") == 0) { + starting++; + if (divide_type != GF_DIVIDE_DEFAULT) { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_TWO_DIV; + return 0; + } else if (strcmp(argv[starting], "EUCLID") == 0) { + divide_type = GF_DIVIDE_EUCLID; + starting++; + } else if (strcmp(argv[starting], "MATRIX") == 0) { + divide_type = GF_DIVIDE_MATRIX; + starting++; + } else { + _gf_errno = GF_E_UNK_DIV; + return 0; + } + } else if (strcmp(argv[starting], "-") == 0) { + /* + printf("Scratch size: %d\n", gf_scratch_size(w, + mult_type, region_type, divide_type, arg1, arg2)); + */ + if (gf_init_hard(gf, w, mult_type, region_type, divide_type, + prim_poly, arg1, arg2, base, NULL) == 0) { + if (base != NULL) gf_free(base, 1); + return 0; + } else + return starting + 1; + } else { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_UNKFLAG; + return 0; + } + } else { + if (base != NULL) gf_free(base, 1); + _gf_errno = GF_E_FEWARGS; + return 0; + } + } +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_rand.c b/src/erasure-code/jerasure/gf-complete/src/gf_rand.c new file mode 100644 index 00000000..a9aa7ad3 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_rand.c @@ -0,0 +1,80 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_rand.c -- Random number generator. + */ + +#include +#include +#include +#include "gf_rand.h" + +/* Lifted the "Mother of All" random number generator from http://www.agner.org/random/ */ + +static uint32_t MOA_X[5]; + +uint32_t MOA_Random_32() { + uint64_t sum; + sum = (uint64_t)2111111111UL * (uint64_t)MOA_X[3] + + (uint64_t)1492 * (uint64_t)(MOA_X[2]) + + (uint64_t)1776 * (uint64_t)(MOA_X[1]) + + (uint64_t)5115 * (uint64_t)(MOA_X[0]) + + (uint64_t)MOA_X[4]; + MOA_X[3] = MOA_X[2]; MOA_X[2] = MOA_X[1]; MOA_X[1] = MOA_X[0]; + MOA_X[4] = (uint32_t)(sum >> 32); + MOA_X[0] = (uint32_t)sum; + return MOA_X[0]; +} + +uint64_t MOA_Random_64() { + uint64_t sum; + + sum = MOA_Random_32(); + sum <<= 32; + sum |= MOA_Random_32(); + return sum; +} + +void MOA_Random_128(uint64_t *x) { + x[0] = MOA_Random_64(); + x[1] = MOA_Random_64(); + return; +} + +uint32_t MOA_Random_W(int w, int zero_ok) +{ + uint32_t b; + + do { + b = MOA_Random_32(); + if (w == 31) b &= 0x7fffffff; + if (w < 31) b %= (1 << w); + } while (!zero_ok && b == 0); + return b; +} + +void MOA_Seed(uint32_t seed) { + int i; + uint32_t s = seed; + for (i = 0; i < 5; i++) { + s = s * 29943829 - 1; + MOA_X[i] = s; + } + for (i=0; i<19; i++) MOA_Random_32(); +} + + +void MOA_Fill_Random_Region (void *reg, int size) +{ + uint32_t *r32; + uint8_t *r8; + int i; + + r32 = (uint32_t *) reg; + r8 = (uint8_t *) reg; + for (i = 0; i < size/4; i++) r32[i] = MOA_Random_32(); + for (i *= 4; i < size; i++) r8[i] = MOA_Random_W(8, 1); +} + diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w128.c b/src/erasure-code/jerasure/gf-complete/src/gf_w128.c new file mode 100644 index 00000000..3bc2d651 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w128.c @@ -0,0 +1,1776 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w128.c + * + * Routines for 128-bit Galois fields + */ + +#include "gf_int.h" +#include +#include +#include "gf_cpu.h" + +#define GF_FIELD_WIDTH (128) + +#define two_x(a) {\ + a[0] <<= 1; \ + if (a[1] & 1ULL << 63) a[0] ^= 1; \ + a[1] <<= 1; } + +#define a_get_b(a, i, b, j) {\ + a[i] = b[j]; \ + a[i + 1] = b[j + 1];} + +#define set_zero(a, i) {\ + a[i] = 0; \ + a[i + 1] = 0;} + +struct gf_w128_split_4_128_data { + uint64_t last_value[2]; + uint64_t tables[2][32][16]; +}; + +struct gf_w128_split_8_128_data { + uint64_t last_value[2]; + uint64_t tables[2][16][256]; +}; + +typedef struct gf_group_tables_s { + gf_val_128_t m_table; + gf_val_128_t r_table; +} gf_group_tables_t; + +#define MM_PRINT8(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 1) printf("%s%02x", (ii%4==0) ? " " : " ", blah[15-ii]); printf("\n"); } + +static +void +gf_w128_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, +int xor) +{ + uint32_t i; + gf_val_128_t s128; + gf_val_128_t d128; + uint64_t c128[2]; + gf_region_data rd; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + set_zero(c128, 0); + + s128 = (gf_val_128_t) src; + d128 = (gf_val_128_t) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) { + gf->multiply.w128(gf, &s128[i], val, c128); + d128[i] ^= c128[0]; + d128[i+1] ^= c128[1]; + } + } else { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) { + gf->multiply.w128(gf, &s128[i], val, &d128[i]); + } + } +} + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w128_clm_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, +int xor) +{ + uint32_t i; + gf_val_128_t s128; + gf_val_128_t d128; + gf_region_data rd; + __m128i a,b; + __m128i result0,result1; + __m128i prim_poly; + __m128i c,d,e,f; + gf_internal_t * h = gf->scratch; + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)h->prim_poly); + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + s128 = (gf_val_128_t) src; + d128 = (gf_val_128_t) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) { + a = _mm_insert_epi64 (_mm_setzero_si128(), s128[i+1], 0); + b = _mm_insert_epi64 (a, val[1], 0); + a = _mm_insert_epi64 (a, s128[i], 1); + b = _mm_insert_epi64 (b, val[0], 1); + + c = _mm_clmulepi64_si128 (a, b, 0x00); /*low-low*/ + f = _mm_clmulepi64_si128 (a, b, 0x01); /*high-low*/ + e = _mm_clmulepi64_si128 (a, b, 0x10); /*low-high*/ + d = _mm_clmulepi64_si128 (a, b, 0x11); /*high-high*/ + + /* now reusing a and b as temporary variables*/ + result0 = _mm_setzero_si128(); + result1 = result0; + + result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0)); + a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1)); + result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a)); + + a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0)); + result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a)); + result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1)); + /* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce. */ + + a = _mm_srli_si128 (result0, 8); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8)); + result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8)); + + a = _mm_insert_epi64 (result0, 0, 1); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result1 = _mm_xor_si128 (result1, b); + d128[i] ^= (uint64_t)_mm_extract_epi64(result1,1); + d128[i+1] ^= (uint64_t)_mm_extract_epi64(result1,0); + } + } else { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i += 2) { + a = _mm_insert_epi64 (_mm_setzero_si128(), s128[i+1], 0); + b = _mm_insert_epi64 (a, val[1], 0); + a = _mm_insert_epi64 (a, s128[i], 1); + b = _mm_insert_epi64 (b, val[0], 1); + + c = _mm_clmulepi64_si128 (a, b, 0x00); /*low-low*/ + f = _mm_clmulepi64_si128 (a, b, 0x01); /*high-low*/ + e = _mm_clmulepi64_si128 (a, b, 0x10); /*low-high*/ + d = _mm_clmulepi64_si128 (a, b, 0x11); /*high-high*/ + + /* now reusing a and b as temporary variables*/ + result0 = _mm_setzero_si128(); + result1 = result0; + + result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0)); + a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1)); + result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a)); + + a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0)); + result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a)); + result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1)); + /* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce.*/ + + a = _mm_srli_si128 (result0, 8); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8)); + result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8)); + + a = _mm_insert_epi64 (result0, 0, 1); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result1 = _mm_xor_si128 (result1, b); + d128[i] = (uint64_t)_mm_extract_epi64(result1,1); + d128[i+1] = (uint64_t)_mm_extract_epi64(result1,0); + } + } +} +#endif + +/* + * Some w128 notes: + * --Big Endian + * --return values allocated beforehand + */ + +#define GF_W128_IS_ZERO(val) (val[0] == 0 && val[1] == 0) + +void +gf_w128_shift_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + /* ordered highest bit to lowest l[0] l[1] r[0] r[1] */ + uint64_t pl[2], pr[2], ppl[2], ppr[2], i, a[2], bl[2], br[2], one, lbit; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if (GF_W128_IS_ZERO(a128) || GF_W128_IS_ZERO(b128)) { + set_zero(c128, 0); + return; + } + + a_get_b(a, 0, a128, 0); + a_get_b(br, 0, b128, 0); + set_zero(bl, 0); + + one = 1; + lbit = (one << 63); + + set_zero(pl, 0); + set_zero(pr, 0); + + /* Allen: a*b for right half of a */ + for (i = 0; i < GF_FIELD_WIDTH/2; i++) { + if (a[1] & (one << i)) { + pl[1] ^= bl[1]; + pr[0] ^= br[0]; + pr[1] ^= br[1]; + } + bl[1] <<= 1; + if (br[0] & lbit) bl[1] ^= 1; + br[0] <<= 1; + if (br[1] & lbit) br[0] ^= 1; + br[1] <<= 1; + } + + /* Allen: a*b for left half of a */ + for (i = 0; i < GF_FIELD_WIDTH/2; i++) { + if (a[0] & (one << i)) { + pl[0] ^= bl[0]; + pl[1] ^= bl[1]; + pr[0] ^= br[0]; + } + bl[0] <<= 1; + if (bl[1] & lbit) bl[0] ^= 1; + bl[1] <<= 1; + if (br[0] & lbit) bl[1] ^= 1; + br[0] <<= 1; + } + + /* Allen: do first half of reduction (based on left quarter of initial product) */ + one = lbit >> 1; + ppl[0] = one; /* Allen: introduce leading one of primitive polynomial */ + ppl[1] = h->prim_poly >> 2; + ppr[0] = h->prim_poly << (GF_FIELD_WIDTH/2-2); + ppr[1] = 0; + while (one != 0) { + if (pl[0] & one) { + pl[0] ^= ppl[0]; + pl[1] ^= ppl[1]; + pr[0] ^= ppr[0]; + pr[1] ^= ppr[1]; + } + one >>= 1; + ppr[1] >>= 1; + if (ppr[0] & 1) ppr[1] ^= lbit; + ppr[0] >>= 1; + if (ppl[1] & 1) ppr[0] ^= lbit; + ppl[1] >>= 1; + if (ppl[0] & 1) ppl[1] ^= lbit; + ppl[0] >>= 1; + } + + /* Allen: final half of reduction */ + one = lbit; + while (one != 0) { + if (pl[1] & one) { + pl[1] ^= ppl[1]; + pr[0] ^= ppr[0]; + pr[1] ^= ppr[1]; + } + one >>= 1; + ppr[1] >>= 1; + if (ppr[0] & 1) ppr[1] ^= lbit; + ppr[0] >>= 1; + if (ppl[1] & 1) ppr[0] ^= lbit; + ppl[1] >>= 1; + } + + /* Allen: if we really want to optimize this we can just be using c128 instead of pr all along */ + c128[0] = pr[0]; + c128[1] = pr[1]; + + return; +} + +#if defined(INTEL_SSE4_PCLMUL) + +void +gf_w128_clm_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + __m128i a,b; + __m128i result0,result1; + __m128i prim_poly; + __m128i c,d,e,f; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi64 (_mm_setzero_si128(), a128[1], 0); + b = _mm_insert_epi64 (a, b128[1], 0); + a = _mm_insert_epi64 (a, a128[0], 1); + b = _mm_insert_epi64 (b, b128[0], 1); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)h->prim_poly); + + /* we need to test algorithm 2 later*/ + c = _mm_clmulepi64_si128 (a, b, 0x00); /*low-low*/ + f = _mm_clmulepi64_si128 (a, b, 0x01); /*high-low*/ + e = _mm_clmulepi64_si128 (a, b, 0x10); /*low-high*/ + d = _mm_clmulepi64_si128 (a, b, 0x11); /*high-high*/ + + /* now reusing a and b as temporary variables*/ + result0 = _mm_setzero_si128(); + result1 = result0; + + result0 = _mm_xor_si128 (result0, _mm_insert_epi64 (d, 0, 0)); + a = _mm_xor_si128 (_mm_srli_si128 (e, 8), _mm_insert_epi64 (d, 0, 1)); + result0 = _mm_xor_si128 (result0, _mm_xor_si128 (_mm_srli_si128 (f, 8), a)); + + a = _mm_xor_si128 (_mm_slli_si128 (e, 8), _mm_insert_epi64 (c, 0, 0)); + result1 = _mm_xor_si128 (result1, _mm_xor_si128 (_mm_slli_si128 (f, 8), a)); + result1 = _mm_xor_si128 (result1, _mm_insert_epi64 (c, 0, 1)); + /* now we have constructed our 'result' with result0 being the carry bits, and we have to reduce.*/ + + a = _mm_srli_si128 (result0, 8); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result0 = _mm_xor_si128 (result0, _mm_srli_si128 (b, 8)); + result1 = _mm_xor_si128 (result1, _mm_slli_si128 (b, 8)); + + a = _mm_insert_epi64 (result0, 0, 1); + b = _mm_clmulepi64_si128 (a, prim_poly, 0x00); + result1 = _mm_xor_si128 (result1, b); + + c128[0] = (uint64_t)_mm_extract_epi64(result1,1); + c128[1] = (uint64_t)_mm_extract_epi64(result1,0); +} +#endif + +void +gf_w128_bytwo_p_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + uint64_t amask[2], pmask, pp, prod[2]; /*John: pmask is always the highest bit set, and the rest zeros. amask changes, it's a countdown.*/ + uint64_t topbit; /* this is used as a boolean value */ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + prod[0] = 0; + prod[1] = 0; + pmask = 0x8000000000000000ULL; + amask[0] = 0x8000000000000000ULL; + amask[1] = 0; + + while (amask[1] != 0 || amask[0] != 0) { + topbit = (prod[0] & pmask); + prod[0] <<= 1; + if (prod[1] & pmask) prod[0] ^= 1; + prod[1] <<= 1; + if (topbit) prod[1] ^= pp; + if ((a128[0] & amask[0]) || (a128[1] & amask[1])) { + prod[0] ^= b128[0]; + prod[1] ^= b128[1]; + } + amask[1] >>= 1; + if (amask[0] & 1) amask[1] ^= pmask; + amask[0] >>= 1; + } + c128[0] = prod [0]; + c128[1] = prod [1]; + return; +} + +#if defined(INTEL_SSE4) +void +gf_w128_sse_bytwo_p_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + int i; + __m128i a, b, pp, prod, amask, u_middle_one; + /*John: pmask is always the highest bit set, and the rest zeros. amask changes, it's a countdown.*/ + uint32_t topbit, middlebit, pmask; /* this is used as a boolean value */ + gf_internal_t *h; + + + h = (gf_internal_t *) gf->scratch; + pp = _mm_set_epi32(0, 0, 0, (uint32_t)h->prim_poly); + prod = _mm_setzero_si128(); + a = _mm_insert_epi64(prod, a128[1], 0x0); + a = _mm_insert_epi64(a, a128[0], 0x1); + b = _mm_insert_epi64(prod, b128[1], 0x0); + b = _mm_insert_epi64(b, b128[0], 0x1); + pmask = 0x80000000; + amask = _mm_insert_epi32(prod, 0x80000000, 0x3); + u_middle_one = _mm_insert_epi32(prod, 1, 0x2); + + for (i = 0; i < 64; i++) { + topbit = (_mm_extract_epi32(prod, 0x3) & pmask); + middlebit = (_mm_extract_epi32(prod, 0x1) & pmask); + prod = _mm_slli_epi64(prod, 1); /* this instruction loses the middle bit */ + if (middlebit) { + prod = _mm_xor_si128(prod, u_middle_one); + } + if (topbit) { + prod = _mm_xor_si128(prod, pp); + } + if (((uint64_t)_mm_extract_epi64(_mm_and_si128(a, amask), 1))) { + prod = _mm_xor_si128(prod, b); + } + amask = _mm_srli_epi64(amask, 1); /*so does this one, but we can just replace after loop*/ + } + amask = _mm_insert_epi32(amask, (gf_val_32_t)1 << 31, 0x1); + for (i = 64; i < 128; i++) { + topbit = (_mm_extract_epi32(prod, 0x3) & pmask); + middlebit = (_mm_extract_epi32(prod, 0x1) & pmask); + prod = _mm_slli_epi64(prod, 1); + if (middlebit) prod = _mm_xor_si128(prod, u_middle_one); + if (topbit) prod = _mm_xor_si128(prod, pp); + if (((uint64_t)_mm_extract_epi64(_mm_and_si128(a, amask), 0))) { + prod = _mm_xor_si128(prod, b); + } + amask = _mm_srli_epi64(amask, 1); + } + c128[0] = (uint64_t)_mm_extract_epi64(prod, 1); + c128[1] = (uint64_t)_mm_extract_epi64(prod, 0); + return; +} +#endif + + +/* Ben: This slow function implements sse instrutions for bytwo_b because why not */ +#if defined(INTEL_SSE4) +void +gf_w128_sse_bytwo_b_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + __m128i a, b, lmask, hmask, pp, c, middle_one; + gf_internal_t *h; + uint64_t topbit, middlebit; + + h = (gf_internal_t *) gf->scratch; + + c = _mm_setzero_si128(); + lmask = _mm_insert_epi64(c, 1ULL << 63, 0); + hmask = _mm_insert_epi64(c, 1ULL << 63, 1); + b = _mm_insert_epi64(c, a128[0], 1); + b = _mm_insert_epi64(b, a128[1], 0); + a = _mm_insert_epi64(c, b128[0], 1); + a = _mm_insert_epi64(a, b128[1], 0); + pp = _mm_insert_epi64(c, h->prim_poly, 0); + middle_one = _mm_insert_epi64(c, 1, 0x1); + + while (1) { + if (_mm_extract_epi32(a, 0x0) & 1) { + c = _mm_xor_si128(c, b); + } + middlebit = (_mm_extract_epi32(a, 0x2) & 1); + a = _mm_srli_epi64(a, 1); + if (middlebit) a = _mm_xor_si128(a, lmask); + if ((_mm_extract_epi64(a, 0x1) == 0ULL) && (_mm_extract_epi64(a, 0x0) == 0ULL)){ + c128[0] = _mm_extract_epi64(c, 0x1); + c128[1] = _mm_extract_epi64(c, 0x0); + return; + } + topbit = (_mm_extract_epi64(_mm_and_si128(b, hmask), 1)); + middlebit = (_mm_extract_epi64(_mm_and_si128(b, lmask), 0)); + b = _mm_slli_epi64(b, 1); + if (middlebit) b = _mm_xor_si128(b, middle_one); + if (topbit) b = _mm_xor_si128(b, pp); + } +} +#endif + +void +gf_w128_bytwo_b_multiply(gf_t *gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + uint64_t bmask, pp; + gf_internal_t *h; + uint64_t a[2], b[2], c[2]; + + h = (gf_internal_t *) gf->scratch; + + bmask = (1ULL << 63); + set_zero(c, 0); + b[0] = a128[0]; + b[1] = a128[1]; + a[0] = b128[0]; + a[1] = b128[1]; + + while (1) { + if (a[1] & 1) { + c[0] ^= b[0]; + c[1] ^= b[1]; + } + a[1] >>= 1; + if (a[0] & 1) a[1] ^= bmask; + a[0] >>= 1; + if (a[1] == 0 && a[0] == 0) { + c128[0] = c[0]; + c128[1] = c[1]; + return; + } + pp = (b[0] & bmask); + b[0] <<= 1; + if (b[1] & bmask) b[0] ^= 1; + b[1] <<= 1; + if (pp) b[1] ^= h->prim_poly; + } +} + +static +void +gf_w128_split_4_128_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + int i, j, k; + uint64_t pp; + gf_internal_t *h; + uint64_t *s64, *d64, *top; + gf_region_data rd; + uint64_t v[2], s; + struct gf_w128_split_4_128_data *ld; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + h = (gf_internal_t *) gf->scratch; + ld = (struct gf_w128_split_4_128_data *) h->private; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + if (val[0] != ld->last_value[0] || val[1] != ld->last_value[1]) { + v[0] = val[0]; + v[1] = val[1]; + for (i = 0; i < 32; i++) { + ld->tables[0][i][0] = 0; + ld->tables[1][i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[0][i][k^j] = (v[0] ^ ld->tables[0][i][k]); + ld->tables[1][i][k^j] = (v[1] ^ ld->tables[1][i][k]); + } + pp = (v[0] & (1ULL << 63)); + v[0] <<= 1; + if (v[1] & (1ULL << 63)) v[0] ^= 1; + v[1] <<= 1; + if (pp) v[1] ^= h->prim_poly; + } + } + } + ld->last_value[0] = val[0]; + ld->last_value[1] = val[1]; + +/* + for (i = 0; i < 32; i++) { + for (j = 0; j < 16; j++) { + printf("%2d %2d %016llx %016llx\n", i, j, ld->tables[0][i][j], ld->tables[1][i][j]); + } + printf("\n"); + } + */ + while (d64 < top) { + v[0] = (xor) ? d64[0] : 0; + v[1] = (xor) ? d64[1] : 0; + s = s64[1]; + i = 0; + while (s != 0) { + v[0] ^= ld->tables[0][i][s&0xf]; + v[1] ^= ld->tables[1][i][s&0xf]; + s >>= 4; + i++; + } + s = s64[0]; + i = 16; + while (s != 0) { + v[0] ^= ld->tables[0][i][s&0xf]; + v[1] ^= ld->tables[1][i][s&0xf]; + s >>= 4; + i++; + } + d64[0] = v[0]; + d64[1] = v[1]; + s64 += 2; + d64 += 2; + } +} + +#if defined(INTEL_SSSE3) && defined(INTEL_SSE4) +static +void +gf_w128_split_4_128_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint64_t pp, v[2], s, *s64, *d64, *top; + __m128i p, tables[32][16]; + struct gf_w128_split_4_128_data *ld; + gf_region_data rd; + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + h = (gf_internal_t *) gf->scratch; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 16); + + /* Doing this instead of gf_do_initial_region_alignment() because that doesn't hold 128-bit vals */ + + gf_w128_multiply_region_from_single(gf, src, dest, val, ((uint8_t *)rd.s_start-(uint8_t *)src), xor); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + ld = (struct gf_w128_split_4_128_data *) h->private; + + if (val[0] != ld->last_value[0] || val[1] != ld->last_value[1]) { + v[0] = val[0]; + v[1] = val[1]; + for (i = 0; i < 32; i++) { + ld->tables[0][i][0] = 0; + ld->tables[1][i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[0][i][k^j] = (v[0] ^ ld->tables[0][i][k]); + ld->tables[1][i][k^j] = (v[1] ^ ld->tables[1][i][k]); + } + pp = (v[0] & (1ULL << 63)); + v[0] <<= 1; + if (v[1] & (1ULL << 63)) v[0] ^= 1; + v[1] <<= 1; + if (pp) v[1] ^= h->prim_poly; + } + } + } + + ld->last_value[0] = val[0]; + ld->last_value[1] = val[1]; + + for (i = 0; i < 32; i++) { + for (j = 0; j < 16; j++) { + v[0] = ld->tables[0][i][j]; + v[1] = ld->tables[1][i][j]; + tables[i][j] = _mm_loadu_si128((__m128i *) v); + +/* + printf("%2d %2d: ", i, j); + MM_PRINT8("", tables[i][j]); */ + } + } + + while (d64 != top) { + + if (xor) { + p = _mm_load_si128 ((__m128i *) d64); + } else { + p = _mm_setzero_si128(); + } + s = *s64; + s64++; + for (i = 0; i < 16; i++) { + j = (s&0xf); + s >>= 4; + p = _mm_xor_si128(p, tables[16+i][j]); + } + s = *s64; + s64++; + for (i = 0; i < 16; i++) { + j = (s&0xf); + s >>= 4; + p = _mm_xor_si128(p, tables[i][j]); + } + _mm_store_si128((__m128i *) d64, p); + d64 += 2; + } + + /* Doing this instead of gf_do_final_region_alignment() because that doesn't hold 128-bit vals */ + + gf_w128_multiply_region_from_single(gf, rd.s_top, rd.d_top, val, ((uint8_t *)src+bytes)-(uint8_t *)rd.s_top, xor); +} +#endif + +#if defined(INTEL_SSSE3) && defined(INTEL_SSE4) +static +void +gf_w128_split_4_128_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint64_t pp, v[2], *s64, *d64, *top; + __m128i si, tables[32][16], p[16], v0, mask1; + struct gf_w128_split_4_128_data *ld; + uint8_t btable[16]; + gf_region_data rd; + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + h = (gf_internal_t *) gf->scratch; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 256); + + /* Doing this instead of gf_do_initial_region_alignment() because that doesn't hold 128-bit vals */ + + gf_w128_multiply_region_from_single(gf, src, dest, val, ((uint8_t *)rd.s_start-(uint8_t *)src), xor); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + ld = (struct gf_w128_split_4_128_data *) h->private; + + if (val[0] != ld->last_value[0] || val[1] != ld->last_value[1]) { + v[0] = val[0]; + v[1] = val[1]; + for (i = 0; i < 32; i++) { + ld->tables[0][i][0] = 0; + ld->tables[1][i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[0][i][k^j] = (v[0] ^ ld->tables[0][i][k]); + ld->tables[1][i][k^j] = (v[1] ^ ld->tables[1][i][k]); + } + pp = (v[0] & (1ULL << 63)); + v[0] <<= 1; + if (v[1] & (1ULL << 63)) v[0] ^= 1; + v[1] <<= 1; + if (pp) v[1] ^= h->prim_poly; + } + } + } + + ld->last_value[0] = val[0]; + ld->last_value[1] = val[1]; + + for (i = 0; i < 32; i++) { + for (j = 0; j < 16; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[1-(j/8)][i][k]; + ld->tables[1-(j/8)][i][k] >>= 8; + } + tables[i][j] = _mm_loadu_si128((__m128i *) btable); +/* + printf("%2d %2d: ", i, j); + MM_PRINT8("", tables[i][j]); + */ + } + } + + + mask1 = _mm_set1_epi8(0xf); + + while (d64 != top) { + + if (xor) { + for (i = 0; i < 16; i++) p[i] = _mm_load_si128 ((__m128i *) (d64+i*2)); + } else { + for (i = 0; i < 16; i++) p[i] = _mm_setzero_si128(); + } + i = 0; + for (k = 0; k < 16; k++) { + v0 = _mm_load_si128((__m128i *) s64); + s64 += 2; + + si = _mm_and_si128(v0, mask1); + + for (j = 0; j < 16; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + for (j = 0; j < 16; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + } + for (i = 0; i < 16; i++) { + _mm_store_si128((__m128i *) d64, p[i]); + d64 += 2; + } + } + /* Doing this instead of gf_do_final_region_alignment() because that doesn't hold 128-bit vals */ + + gf_w128_multiply_region_from_single(gf, rd.s_top, rd.d_top, val, ((uint8_t *)src+bytes)-(uint8_t *)rd.s_top, xor); +} +#endif + +static +void +gf_w128_split_8_128_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + int i, j, k; + uint64_t pp; + gf_internal_t *h; + uint64_t *s64, *d64, *top; + gf_region_data rd; + uint64_t v[2], s; + struct gf_w128_split_8_128_data *ld; + + /* Check on alignment. Ignore it otherwise. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + h = (gf_internal_t *) gf->scratch; + ld = (struct gf_w128_split_8_128_data *) h->private; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + if (val[0] != ld->last_value[0] || val[1] != ld->last_value[1]) { + v[0] = val[0]; + v[1] = val[1]; + for (i = 0; i < 16; i++) { + ld->tables[0][i][0] = 0; + ld->tables[1][i][0] = 0; + for (j = 1; j < (1 << 8); j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[0][i][k^j] = (v[0] ^ ld->tables[0][i][k]); + ld->tables[1][i][k^j] = (v[1] ^ ld->tables[1][i][k]); + } + pp = (v[0] & (1ULL << 63)); + v[0] <<= 1; + if (v[1] & (1ULL << 63)) v[0] ^= 1; + v[1] <<= 1; + if (pp) v[1] ^= h->prim_poly; + } + } + } + ld->last_value[0] = val[0]; + ld->last_value[1] = val[1]; + + while (d64 < top) { + v[0] = (xor) ? d64[0] : 0; + v[1] = (xor) ? d64[1] : 0; + s = s64[1]; + i = 0; + while (s != 0) { + v[0] ^= ld->tables[0][i][s&0xff]; + v[1] ^= ld->tables[1][i][s&0xff]; + s >>= 8; + i++; + } + s = s64[0]; + i = 8; + while (s != 0) { + v[0] ^= ld->tables[0][i][s&0xff]; + v[1] ^= ld->tables[1][i][s&0xff]; + s >>= 8; + i++; + } + d64[0] = v[0]; + d64[1] = v[1]; + s64 += 2; + d64 += 2; + } +} + +void +gf_w128_bytwo_b_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + uint64_t bmask, pp; + gf_internal_t *h; + uint64_t a[2], c[2], b[2], *s64, *d64, *top; + gf_region_data rd; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + h = (gf_internal_t *) gf->scratch; + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + bmask = (1ULL << 63); + + while (d64 < top) { + set_zero(c, 0); + b[0] = s64[0]; + b[1] = s64[1]; + a[0] = val[0]; + a[1] = val[1]; + + while (a[0] != 0) { + if (a[1] & 1) { + c[0] ^= b[0]; + c[1] ^= b[1]; + } + a[1] >>= 1; + if (a[0] & 1) a[1] ^= bmask; + a[0] >>= 1; + pp = (b[0] & bmask); + b[0] <<= 1; + if (b[1] & bmask) b[0] ^= 1; + b[1] <<= 1; + if (pp) b[1] ^= h->prim_poly; + } + while (1) { + if (a[1] & 1) { + c[0] ^= b[0]; + c[1] ^= b[1]; + } + a[1] >>= 1; + if (a[1] == 0) break; + pp = (b[0] & bmask); + b[0] <<= 1; + if (b[1] & bmask) b[0] ^= 1; + b[1] <<= 1; + if (pp) b[1] ^= h->prim_poly; + } + if (xor) { + d64[0] ^= c[0]; + d64[1] ^= c[1]; + } else { + d64[0] = c[0]; + d64[1] = c[1]; + } + s64 += 2; + d64 += 2; + } +} + +static +void gf_w128_group_m_init(gf_t *gf, gf_val_128_t b128) +{ + int i, j; + int g_m; + uint64_t prim_poly, lbit; + gf_internal_t *scratch; + gf_group_tables_t *gt; + uint64_t a128[2]; + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + g_m = scratch->arg1; + prim_poly = scratch->prim_poly; + + + set_zero(gt->m_table, 0); + a_get_b(gt->m_table, 2, b128, 0); + lbit = 1; + lbit <<= 63; + + for (i = 2; i < (1 << g_m); i <<= 1) { + a_get_b(a128, 0, gt->m_table, 2 * (i >> 1)); + two_x(a128); + a_get_b(gt->m_table, 2 * i, a128, 0); + if (gt->m_table[2 * (i >> 1)] & lbit) gt->m_table[(2 * i) + 1] ^= prim_poly; + for (j = 0; j < i; j++) { + gt->m_table[(2 * i) + (2 * j)] = gt->m_table[(2 * i)] ^ gt->m_table[(2 * j)]; + gt->m_table[(2 * i) + (2 * j) + 1] = gt->m_table[(2 * i) + 1] ^ gt->m_table[(2 * j) + 1]; + } + } + return; +} + +void +gf_w128_group_multiply(GFP gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + int i; + /* index_r, index_m, total_m (if g_r > g_m) */ + int i_r, i_m, t_m; + int mask_m, mask_r; + int g_m, g_r; + uint64_t p_i[2], a[2]; + gf_internal_t *scratch; + gf_group_tables_t *gt; + + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + g_m = scratch->arg1; + g_r = scratch->arg2; + + mask_m = (1 << g_m) - 1; + mask_r = (1 << g_r) - 1; + + if (b128[0] != gt->m_table[2] || b128[1] != gt->m_table[3]) { + gf_w128_group_m_init(gf, b128); + } + + p_i[0] = 0; + p_i[1] = 0; + a[0] = a128[0]; + a[1] = a128[1]; + + t_m = 0; + i_r = 0; + + /* Top 64 bits */ + for (i = ((GF_FIELD_WIDTH / 2) / g_m) - 1; i >= 0; i--) { + i_m = (a[0] >> (i * g_m)) & mask_m; + i_r ^= (p_i[0] >> (64 - g_m)) & mask_r; + p_i[0] <<= g_m; + p_i[0] ^= (p_i[1] >> (64-g_m)); + p_i[1] <<= g_m; + p_i[0] ^= gt->m_table[2 * i_m]; + p_i[1] ^= gt->m_table[(2 * i_m) + 1]; + t_m += g_m; + if (t_m == g_r) { + p_i[1] ^= gt->r_table[i_r]; + t_m = 0; + i_r = 0; + } else { + i_r <<= g_m; + } + } + + for (i = ((GF_FIELD_WIDTH / 2) / g_m) - 1; i >= 0; i--) { + i_m = (a[1] >> (i * g_m)) & mask_m; + i_r ^= (p_i[0] >> (64 - g_m)) & mask_r; + p_i[0] <<= g_m; + p_i[0] ^= (p_i[1] >> (64-g_m)); + p_i[1] <<= g_m; + p_i[0] ^= gt->m_table[2 * i_m]; + p_i[1] ^= gt->m_table[(2 * i_m) + 1]; + t_m += g_m; + if (t_m == g_r) { + p_i[1] ^= gt->r_table[i_r]; + t_m = 0; + i_r = 0; + } else { + i_r <<= g_m; + } + } + c128[0] = p_i[0]; + c128[1] = p_i[1]; +} + +static +void +gf_w128_group_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + int i; + int i_r, i_m, t_m; + int mask_m, mask_r; + int g_m, g_r; + uint64_t p_i[2], a[2]; + gf_internal_t *scratch; + gf_group_tables_t *gt; + gf_region_data rd; + uint64_t *a128, *c128, *top; + + /* We only do this to check on alignment. */ + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + if (val[0] == 0) { + if (val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val[1] == 1) { gf_multby_one(src, dest, bytes, xor); return; } + } + + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + g_m = scratch->arg1; + g_r = scratch->arg2; + + mask_m = (1 << g_m) - 1; + mask_r = (1 << g_r) - 1; + + if (val[0] != gt->m_table[2] || val[1] != gt->m_table[3]) { + gf_w128_group_m_init(gf, val); + } + + a128 = (uint64_t *) src; + c128 = (uint64_t *) dest; + top = (uint64_t *) rd.d_top; + + while (c128 < top) { + p_i[0] = 0; + p_i[1] = 0; + a[0] = a128[0]; + a[1] = a128[1]; + + t_m = 0; + i_r = 0; + + /* Top 64 bits */ + for (i = ((GF_FIELD_WIDTH / 2) / g_m) - 1; i >= 0; i--) { + i_m = (a[0] >> (i * g_m)) & mask_m; + i_r ^= (p_i[0] >> (64 - g_m)) & mask_r; + p_i[0] <<= g_m; + p_i[0] ^= (p_i[1] >> (64-g_m)); + p_i[1] <<= g_m; + + p_i[0] ^= gt->m_table[2 * i_m]; + p_i[1] ^= gt->m_table[(2 * i_m) + 1]; + t_m += g_m; + if (t_m == g_r) { + p_i[1] ^= gt->r_table[i_r]; + t_m = 0; + i_r = 0; + } else { + i_r <<= g_m; + } + } + for (i = ((GF_FIELD_WIDTH / 2) / g_m) - 1; i >= 0; i--) { + i_m = (a[1] >> (i * g_m)) & mask_m; + i_r ^= (p_i[0] >> (64 - g_m)) & mask_r; + p_i[0] <<= g_m; + p_i[0] ^= (p_i[1] >> (64-g_m)); + p_i[1] <<= g_m; + p_i[0] ^= gt->m_table[2 * i_m]; + p_i[1] ^= gt->m_table[(2 * i_m) + 1]; + t_m += g_m; + if (t_m == g_r) { + p_i[1] ^= gt->r_table[i_r]; + t_m = 0; + i_r = 0; + } else { + i_r <<= g_m; + } + } + + if (xor) { + c128[0] ^= p_i[0]; + c128[1] ^= p_i[1]; + } else { + c128[0] = p_i[0]; + c128[1] = p_i[1]; + } + a128 += 2; + c128 += 2; + } +} + +/* a^-1 -> b */ +void +gf_w128_euclid(GFP gf, gf_val_128_t a128, gf_val_128_t b128) +{ + uint64_t e_i[2], e_im1[2], e_ip1[2]; + uint64_t d_i, d_im1, d_ip1; + uint64_t y_i[2], y_im1[2], y_ip1[2]; + uint64_t c_i[2]; + uint64_t *b; + uint64_t one = 1; + + /* This needs to return some sort of error (in b128?) */ + if (a128[0] == 0 && a128[1] == 0) return; + + b = (uint64_t *) b128; + + e_im1[0] = 0; + e_im1[1] = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i[0] = a128[0]; + e_i[1] = a128[1]; + d_im1 = 128; + + //Allen: I think d_i starts at 63 here, and checks each bit of a, starting at MSB, looking for the first nonzero bit + //so d_i should be 0 if this half of a is all 0s, otherwise it should be the position from right of the first-from-left zero bit of this half of a. + //BUT if d_i is 0 at end we won't know yet if the rightmost bit of this half is 1 or not + + for (d_i = (d_im1-1) % 64; ((one << d_i) & e_i[0]) == 0 && d_i > 0; d_i--) ; + + //Allen: this is testing just the first half of the stop condition above, so if it holds we know we did not find a nonzero bit yet + + if (!((one << d_i) & e_i[0])) { + + //Allen: this is doing the same thing on the other half of a. In other words, we're still searching for a nonzero bit of a. + // but not bothering to test if d_i hits zero, which is fine because we've already tested for a=0. + + for (d_i = (d_im1-1) % 64; ((one << d_i) & e_i[1]) == 0; d_i--) ; + + } else { + + //Allen: if a 1 was found in more-significant half of a, make d_i the ACTUAL index of the first nonzero bit in the entire a. + + d_i += 64; + } + y_i[0] = 0; + y_i[1] = 1; + y_im1[0] = 0; + y_im1[1] = 0; + + while (!(e_i[0] == 0 && e_i[1] == 1)) { + + e_ip1[0] = e_im1[0]; + e_ip1[1] = e_im1[1]; + d_ip1 = d_im1; + c_i[0] = 0; + c_i[1] = 0; + + while (d_ip1 >= d_i) { + if ((d_ip1 - d_i) >= 64) { + c_i[0] ^= (one << ((d_ip1 - d_i) - 64)); + e_ip1[0] ^= (e_i[1] << ((d_ip1 - d_i) - 64)); + } else { + c_i[1] ^= (one << (d_ip1 - d_i)); + e_ip1[0] ^= (e_i[0] << (d_ip1 - d_i)); + if (d_ip1 - d_i > 0) e_ip1[0] ^= (e_i[1] >> (64 - (d_ip1 - d_i))); + e_ip1[1] ^= (e_i[1] << (d_ip1 - d_i)); + } + d_ip1--; + if (e_ip1[0] == 0 && e_ip1[1] == 0) { b[0] = 0; b[1] = 0; return; } + while (d_ip1 >= 64 && (e_ip1[0] & (one << (d_ip1 - 64))) == 0) d_ip1--; + while (d_ip1 < 64 && (e_ip1[1] & (one << d_ip1)) == 0) d_ip1--; + } + gf->multiply.w128(gf, c_i, y_i, y_ip1); + y_ip1[0] ^= y_im1[0]; + y_ip1[1] ^= y_im1[1]; + + y_im1[0] = y_i[0]; + y_im1[1] = y_i[1]; + + y_i[0] = y_ip1[0]; + y_i[1] = y_ip1[1]; + + e_im1[0] = e_i[0]; + e_im1[1] = e_i[1]; + d_im1 = d_i; + e_i[0] = e_ip1[0]; + e_i[1] = e_ip1[1]; + d_i = d_ip1; + } + + b[0] = y_i[0]; + b[1] = y_i[1]; + return; +} + +void +gf_w128_divide_from_inverse(GFP gf, gf_val_128_t a128, gf_val_128_t b128, gf_val_128_t c128) +{ + uint64_t d[2]; + gf->inverse.w128(gf, b128, d); + gf->multiply.w128(gf, a128, d, c128); + return; +} + +void +gf_w128_inverse_from_divide(GFP gf, gf_val_128_t a128, gf_val_128_t b128) +{ + uint64_t one128[2]; + one128[0] = 0; + one128[1] = 1; + gf->divide.w128(gf, one128, a128, b128); + return; +} + + +static +void +gf_w128_composite_inverse(gf_t *gf, gf_val_128_t a, gf_val_128_t inv) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint64_t a0 = a[1]; + uint64_t a1 = a[0]; + uint64_t c0, c1, d, tmp; + uint64_t a0inv, a1inv; + + if (a0 == 0) { + a1inv = base_gf->inverse.w64(base_gf, a1); + c0 = base_gf->multiply.w64(base_gf, a1inv, h->prim_poly); + c1 = a1inv; + } else if (a1 == 0) { + c0 = base_gf->inverse.w64(base_gf, a0); + c1 = 0; + } else { + a1inv = base_gf->inverse.w64(base_gf, a1); + a0inv = base_gf->inverse.w64(base_gf, a0); + + d = base_gf->multiply.w64(base_gf, a1, a0inv); + + tmp = (base_gf->multiply.w64(base_gf, a1, a0inv) ^ base_gf->multiply.w64(base_gf, a0, a1inv) ^ h->prim_poly); + tmp = base_gf->inverse.w64(base_gf, tmp); + + d = base_gf->multiply.w64(base_gf, d, tmp); + + c0 = base_gf->multiply.w64(base_gf, (d^1), a0inv); + c1 = base_gf->multiply.w64(base_gf, d, a1inv); + } + inv[0] = c1; + inv[1] = c0; +} + +static + void +gf_w128_composite_multiply(gf_t *gf, gf_val_128_t a, gf_val_128_t b, gf_val_128_t rv) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint64_t b0 = b[1]; + uint64_t b1 = b[0]; + uint64_t a0 = a[1]; + uint64_t a1 = a[0]; + uint64_t a1b1; + + a1b1 = base_gf->multiply.w64(base_gf, a1, b1); + + rv[1] = (base_gf->multiply.w64(base_gf, a0, b0) ^ a1b1); + rv[0] = base_gf->multiply.w64(base_gf, a1, b0) ^ + base_gf->multiply.w64(base_gf, a0, b1) ^ + base_gf->multiply.w64(base_gf, a1b1, h->prim_poly); +} + +static + void +gf_w128_composite_multiply_region(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint64_t b0 = val[1]; + uint64_t b1 = val[0]; + uint64_t *s64, *d64; + uint64_t *top; + uint64_t a0, a1, a1b1; + gf_region_data rd; + + if (val[0] == 0 && val[1] == 0) { gf_multby_zero(dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 8); + + s64 = rd.s_start; + d64 = rd.d_start; + top = rd.d_top; + + if (xor) { + while (d64 < top) { + a1 = s64[0]; + a0 = s64[1]; + a1b1 = base_gf->multiply.w64(base_gf, a1, b1); + + d64[1] ^= (base_gf->multiply.w64(base_gf, a0, b0) ^ a1b1); + d64[0] ^= (base_gf->multiply.w64(base_gf, a1, b0) ^ + base_gf->multiply.w64(base_gf, a0, b1) ^ + base_gf->multiply.w64(base_gf, a1b1, h->prim_poly)); + s64 += 2; + d64 += 2; + } + } else { + while (d64 < top) { + a1 = s64[0]; + a0 = s64[1]; + a1b1 = base_gf->multiply.w64(base_gf, a1, b1); + + d64[1] = (base_gf->multiply.w64(base_gf, a0, b0) ^ a1b1); + d64[0] = (base_gf->multiply.w64(base_gf, a1, b0) ^ + base_gf->multiply.w64(base_gf, a0, b1) ^ + base_gf->multiply.w64(base_gf, a1b1, h->prim_poly)); + s64 += 2; + d64 += 2; + } + } +} + +static +void +gf_w128_composite_multiply_region_alt(gf_t *gf, void *src, void *dest, gf_val_128_t val, int bytes, int + xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; gf_t *base_gf = h->base_gf; + gf_val_64_t val0 = val[1]; + gf_val_64_t val1 = val[0]; + uint8_t *slow, *shigh; + uint8_t *dlow, *dhigh, *top; + int sub_reg_size; + gf_region_data rd; + + gf_set_region_data(&rd, gf, src, dest, bytes, 0, xor, 64); + gf_w128_multiply_region_from_single(gf, src, dest, val, ((uint8_t *)rd.s_start-(uint8_t *)src), xor); + + slow = (uint8_t *) rd.s_start; + dlow = (uint8_t *) rd.d_start; + top = (uint8_t*) rd.d_top; + sub_reg_size = (top - dlow)/2; + shigh = slow + sub_reg_size; + dhigh = dlow + sub_reg_size; + + base_gf->multiply_region.w64(base_gf, slow, dlow, val0, sub_reg_size, xor); + base_gf->multiply_region.w64(base_gf, shigh, dlow, val1, sub_reg_size, 1); + base_gf->multiply_region.w64(base_gf, slow, dhigh, val1, sub_reg_size, xor); + base_gf->multiply_region.w64(base_gf, shigh, dhigh, val0, sub_reg_size, 1); + base_gf->multiply_region.w64(base_gf, shigh, dhigh, base_gf->multiply.w64(base_gf, h->prim_poly, val1 + ), sub_reg_size, 1); + + gf_w128_multiply_region_from_single(gf, rd.s_top, rd.d_top, val, ((uint8_t *)src+bytes)-(uint8_t *)rd.s_top, xor); +} + + + static +int gf_w128_composite_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (h->region_type & GF_REGION_ALTMAP) { + SET_FUNCTION(gf,multiply_region,w128,gf_w128_composite_multiply_region_alt) + } else { + SET_FUNCTION(gf,multiply_region,w128,gf_w128_composite_multiply_region) + } + + SET_FUNCTION(gf,multiply,w128,gf_w128_composite_multiply) + SET_FUNCTION(gf,divide,w128,gf_w128_divide_from_inverse) + SET_FUNCTION(gf,inverse,w128,gf_w128_composite_inverse) + + return 1; +} + +static +int gf_w128_cfm_init(gf_t *gf) +{ +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + SET_FUNCTION(gf,inverse,w128,gf_w128_euclid) + SET_FUNCTION(gf,multiply,w128,gf_w128_clm_multiply) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_clm_multiply_region_from_single) + return 1; + } +#endif + + return 0; +} + +static +int gf_w128_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w128,gf_w128_shift_multiply) + SET_FUNCTION(gf,inverse,w128,gf_w128_euclid) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_multiply_region_from_single) + return 1; +} + + static +int gf_w128_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + h = (gf_internal_t *) gf->scratch; + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w128,gf_w128_bytwo_p_multiply) + /*SET_FUNCTION(gf,multiply,w128,gf_w128_sse_bytwo_p_multiply)*/ + /* John: the sse function is slower.*/ + } else { + SET_FUNCTION(gf,multiply,w128,gf_w128_bytwo_b_multiply) + /*SET_FUNCTION(gf,multiply,w128,gf_w128_sse_bytwo_b_multiply) +Ben: This sse function is also slower. */ + } + SET_FUNCTION(gf,inverse,w128,gf_w128_euclid) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_bytwo_b_multiply_region) + return 1; +} + +/* + * Because the prim poly is only 8 bits and we are limiting g_r to 16, I do not need the high 64 + * bits in all of these numbers. + */ + static +void gf_w128_group_r_init(gf_t *gf) +{ + int i, j; + int g_r; + uint64_t pp; + gf_internal_t *scratch; + gf_group_tables_t *gt; + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + g_r = scratch->arg2; + pp = scratch->prim_poly; + + gt->r_table[0] = 0; + for (i = 1; i < (1 << g_r); i++) { + gt->r_table[i] = 0; + for (j = 0; j < g_r; j++) { + if (i & (1 << j)) { + gt->r_table[i] ^= (pp << j); + } + } + } + return; +} + +#if 0 // defined(INTEL_SSE4) + static +void gf_w128_group_r_sse_init(gf_t *gf) +{ + int i, j; + int g_r; + uint64_t pp; + gf_internal_t *scratch; + gf_group_tables_t *gt; + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + __m128i zero = _mm_setzero_si128(); + __m128i *table = (__m128i *)(gt->r_table); + g_r = scratch->arg2; + pp = scratch->prim_poly; + table[0] = zero; + for (i = 1; i < (1 << g_r); i++) { + table[i] = zero; + for (j = 0; j < g_r; j++) { + if (i & (1 << j)) { + table[i] = _mm_xor_si128(table[i], _mm_insert_epi64(zero, pp << j, 0)); + } + } + } + return; +} +#endif + + static +int gf_w128_split_init(gf_t *gf) +{ + struct gf_w128_split_4_128_data *sd4; + struct gf_w128_split_8_128_data *sd8; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + SET_FUNCTION(gf,multiply,w128,gf_w128_bytwo_p_multiply) +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul && !(h->region_type & GF_REGION_NOSIMD)){ + SET_FUNCTION(gf,multiply,w128,gf_w128_clm_multiply) + } +#endif + + SET_FUNCTION(gf,inverse,w128,gf_w128_euclid) + + if ((h->arg1 != 4 && h->arg2 != 4) || h->mult_type == GF_MULT_DEFAULT) { + sd8 = (struct gf_w128_split_8_128_data *) h->private; + sd8->last_value[0] = 0; + sd8->last_value[1] = 0; + SET_FUNCTION(gf,multiply_region,w128,gf_w128_split_8_128_multiply_region) + } else { + sd4 = (struct gf_w128_split_4_128_data *) h->private; + sd4->last_value[0] = 0; + sd4->last_value[1] = 0; + if((h->region_type & GF_REGION_ALTMAP)) + { + #ifdef INTEL_SSE4 + if(gf_cpu_supports_intel_sse4 && !(h->region_type & GF_REGION_NOSIMD)) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_split_4_128_sse_altmap_multiply_region) + else + #endif + return 0; + } + else { + #ifdef INTEL_SSE4 + if(gf_cpu_supports_intel_sse4 && !(h->region_type & GF_REGION_NOSIMD)) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_split_4_128_sse_multiply_region) + else + #endif + SET_FUNCTION(gf,multiply_region,w128,gf_w128_split_4_128_multiply_region) + } + } + return 1; +} + + +static +int gf_w128_group_init(gf_t *gf) +{ + gf_internal_t *scratch; + gf_group_tables_t *gt; + int g_r, size_r; + + scratch = (gf_internal_t *) gf->scratch; + gt = scratch->private; + g_r = scratch->arg2; + size_r = (1 << g_r); + + gt->r_table = (gf_val_128_t)((uint8_t *)scratch->private + (2 * sizeof(uint64_t *))); + gt->m_table = gt->r_table + size_r; + gt->m_table[2] = 0; + gt->m_table[3] = 0; + + SET_FUNCTION(gf,multiply,w128,gf_w128_group_multiply) + SET_FUNCTION(gf,inverse,w128,gf_w128_euclid) + SET_FUNCTION(gf,multiply_region,w128,gf_w128_group_multiply_region) + + gf_w128_group_r_init(gf); + + return 1; +} + +void gf_w128_extract_word(gf_t *gf, void *start, int bytes, int index, gf_val_128_t rv) +{ + gf_val_128_t s; + + s = (gf_val_128_t) start; + s += (index * 2); + memcpy(rv, s, 16); +} + +static void gf_w128_split_extract_word(gf_t *gf, void *start, int bytes, int index, gf_val_128_t rv) +{ + int i, blocks; + uint64_t *r64, tmp; + uint8_t *r8; + gf_region_data rd; + + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 256); + r64 = (uint64_t *) start; + if ((r64 + index*2 < (uint64_t *) rd.d_start) || + (r64 + index*2 >= (uint64_t *) rd.d_top)) { + memcpy(rv, r64+(index*2), 16); + return; + } + + index -= (((uint64_t *) rd.d_start) - r64)/2; + r64 = (uint64_t *) rd.d_start; + + blocks = index/16; + r64 += (blocks*32); + index %= 16; + r8 = (uint8_t *) r64; + r8 += index; + rv[0] = 0; + rv[1] = 0; + + for (i = 0; i < 8; i++) { + tmp = *r8; + rv[1] |= (tmp << (i*8)); + r8 += 16; + } + + for (i = 0; i < 8; i++) { + tmp = *r8; + rv[0] |= (tmp << (i*8)); + r8 += 16; + } + return; +} + + static +void gf_w128_composite_extract_word(gf_t *gf, void *start, int bytes, int index, gf_val_128_t rv) +{ + int sub_size; + gf_internal_t *h; + uint8_t *r8, *top; + uint64_t *r64; + gf_region_data rd; + + h = (gf_internal_t *) gf->scratch; + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 64); + r64 = (uint64_t *) start; + if ((r64 + index*2 < (uint64_t *) rd.d_start) || + (r64 + index*2 >= (uint64_t *) rd.d_top)) { + memcpy(rv, r64+(index*2), 16); + return; + } + index -= (((uint64_t *) rd.d_start) - r64)/2; + r8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_size = (top-r8)/2; + + rv[1] = h->base_gf->extract_word.w64(h->base_gf, r8, sub_size, index); + rv[0] = h->base_gf->extract_word.w64(h->base_gf, r8+sub_size, sub_size, index); + + return; +} + +int gf_w128_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + int size_m, size_r; + if (divide_type==GF_DIVIDE_MATRIX) return 0; + + switch(mult_type) + { + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t); + break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: + if ((arg1 == 4 && arg2 == 128) || (arg1 == 128 && arg2 == 4)) { + return sizeof(gf_internal_t) + sizeof(struct gf_w128_split_4_128_data) + 64; + } else if ((arg1 == 8 && arg2 == 128) || (arg1 == 128 && arg2 == 8) || mult_type == GF_MULT_DEFAULT) { + return sizeof(gf_internal_t) + sizeof(struct gf_w128_split_8_128_data) + 64; + } + return 0; + break; + case GF_MULT_GROUP: + /* JSP We've already error checked the arguments. */ + size_m = (1 << arg1) * 2 * sizeof(uint64_t); + size_r = (1 << arg2) * 2 * sizeof(uint64_t); + /* + * two pointers prepend the table data for structure + * because the tables are of dynamic size + */ + return sizeof(gf_internal_t) + size_m + size_r + 4 * sizeof(uint64_t *); + break; + case GF_MULT_COMPOSITE: + if (arg1 == 2) { + return sizeof(gf_internal_t) + 4; + } else { + return 0; + } + break; + + default: + return 0; + } +} + +int gf_w128_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set default primitive polynomial / irreducible polynomial if needed */ + + if (h->prim_poly == 0) { + if (h->mult_type == GF_MULT_COMPOSITE) { + h->prim_poly = gf_composite_get_default_poly(h->base_gf); + if (h->prim_poly == 0) return 0; /* This shouldn't happen */ + } else { + h->prim_poly = 0x87; /* Omitting the leftmost 1 as in w=32 */ + } + } + + SET_FUNCTION(gf,multiply,w128,NULL) + SET_FUNCTION(gf,divide,w128,NULL) + SET_FUNCTION(gf,inverse,w128,NULL) + SET_FUNCTION(gf,multiply_region,w128,NULL) + switch(h->mult_type) { + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w128_bytwo_init(gf) == 0) return 0; break; + case GF_MULT_CARRY_FREE: if (gf_w128_cfm_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w128_shift_init(gf) == 0) return 0; break; + case GF_MULT_GROUP: if (gf_w128_group_init(gf) == 0) return 0; break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: if (gf_w128_split_init(gf) == 0) return 0; break; + case GF_MULT_COMPOSITE: if (gf_w128_composite_init(gf) == 0) return 0; break; + default: return 0; + } + + /* Ben: Used to be h->region_type == GF_REGION_ALTMAP, but failed since there + are multiple flags in h->region_type */ + if (h->mult_type == GF_MULT_SPLIT_TABLE && (h->region_type & GF_REGION_ALTMAP)) { + SET_FUNCTION(gf,extract_word,w128,gf_w128_split_extract_word) + } else if (h->mult_type == GF_MULT_COMPOSITE && h->region_type == GF_REGION_ALTMAP) { + SET_FUNCTION(gf,extract_word,w128,gf_w128_composite_extract_word) + } else { + SET_FUNCTION(gf,extract_word,w128,gf_w128_extract_word) + } + + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w128,gf_w128_divide_from_inverse) + } + + if (gf->inverse.w128 != NULL && gf->divide.w128 == NULL) { + SET_FUNCTION(gf,divide,w128,gf_w128_divide_from_inverse) + } + if (gf->inverse.w128 == NULL && gf->divide.w128 != NULL) { + SET_FUNCTION(gf,inverse,w128,gf_w128_inverse_from_divide) + } + return 1; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w16.c b/src/erasure-code/jerasure/gf-complete/src/gf_w16.c new file mode 100644 index 00000000..83168926 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w16.c @@ -0,0 +1,2449 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w16.c + * + * Routines for 16-bit Galois fields + */ + +#include "gf_int.h" +#include +#include +#include "gf_w16.h" +#include "gf_cpu.h" + +#define AB2(ip, am1 ,am2, b, t1, t2) {\ + t1 = (b << 1) & am1;\ + t2 = b & am2; \ + t2 = ((t2 << 1) - (t2 >> (GF_FIELD_WIDTH-1))); \ + b = (t1 ^ (t2 & ip));} + +#define SSE_AB2(pp, m1 ,m2, va, t1, t2) {\ + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); \ + t2 = _mm_and_si128(va, m2); \ + t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \ + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); } + +#define MM_PRINT(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 2) printf(" %02x %02x", blah[15-ii], blah[14-ii]); printf("\n"); } + +#define GF_FIRST_BIT (1 << 15) +#define GF_MULTBY_TWO(p) (((p) & GF_FIRST_BIT) ? (((p) << 1) ^ h->prim_poly) : (p) << 1) + +static +inline +gf_val_32_t gf_w16_inverse_from_divide (gf_t *gf, gf_val_32_t a) +{ + return gf->divide.w32(gf, 1, a); +} + +static +inline +gf_val_32_t gf_w16_divide_from_inverse (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + b = gf->inverse.w32(gf, b); + return gf->multiply.w32(gf, a, b); +} + +static +void +gf_w16_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint16_t *s16; + uint16_t *d16; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + + if (xor) { + while (d16 < ((uint16_t *) rd.d_top)) { + *d16 ^= gf->multiply.w32(gf, val, *s16); + d16++; + s16++; + } + } else { + while (d16 < ((uint16_t *) rd.d_top)) { + *d16 = gf->multiply.w32(gf, val, *s16); + d16++; + s16++; + } + } + gf_do_final_region_alignment(&rd); +} + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w16_clm_multiply_region_from_single_2(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint16_t *s16; + uint16_t *d16; + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + + if (xor) { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } else { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w16_clm_multiply_region_from_single_3(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint16_t *s16; + uint16_t *d16; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + + if (xor) { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } else { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w16_clm_multiply_region_from_single_4(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint16_t *s16; + uint16_t *d16; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + + if (xor) { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } else { + while (d16 < ((uint16_t *) rd.d_top)) { + + /* see gf_w16_clm_multiply() to see explanation of method */ + + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s16), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + *d16 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d16++; + s16++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +static +inline +gf_val_32_t gf_w16_euclid (gf_t *gf, gf_val_32_t b) +{ + gf_val_32_t e_i, e_im1, e_ip1; + gf_val_32_t d_i, d_im1, d_ip1; + gf_val_32_t y_i, y_im1, y_ip1; + gf_val_32_t c_i; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = 16; + for (d_i = d_im1; ((1 << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (1 << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + if (e_ip1 == 0) return 0; + while ((e_ip1 & (1 << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w32(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +static +gf_val_32_t gf_w16_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint16_t *r16, rv; + + r16 = (uint16_t *) start; + rv = r16[index]; + return rv; +} + +static +gf_val_32_t gf_w16_composite_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int sub_size; + gf_internal_t *h; + uint8_t *r8, *top; + uint16_t a, b, *r16; + gf_region_data rd; + + h = (gf_internal_t *) gf->scratch; + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 32); + r16 = (uint16_t *) start; + if (r16 + index < (uint16_t *) rd.d_start) return r16[index]; + if (r16 + index >= (uint16_t *) rd.d_top) return r16[index]; + index -= (((uint16_t *) rd.d_start) - r16); + r8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_size = (top-r8)/2; + + a = h->base_gf->extract_word.w32(h->base_gf, r8, sub_size, index); + b = h->base_gf->extract_word.w32(h->base_gf, r8+sub_size, sub_size, index); + return (a | (b << 8)); +} + +static +gf_val_32_t gf_w16_split_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint16_t *r16, rv; + uint8_t *r8; + gf_region_data rd; + + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 32); + r16 = (uint16_t *) start; + if (r16 + index < (uint16_t *) rd.d_start) return r16[index]; + if (r16 + index >= (uint16_t *) rd.d_top) return r16[index]; + index -= (((uint16_t *) rd.d_start) - r16); + r8 = (uint8_t *) rd.d_start; + r8 += ((index & 0xfffffff0)*2); + r8 += (index & 0xf); + rv = (*r8 << 8); + r8 += 16; + rv |= *r8; + return rv; +} + +static +inline +gf_val_32_t gf_w16_matrix (gf_t *gf, gf_val_32_t b) +{ + return gf_bitmatrix_inverse(b, 16, ((gf_internal_t *) (gf->scratch))->prim_poly); +} + +/* JSP: GF_MULT_SHIFT: The world's dumbest multiplication algorithm. I only + include it for completeness. It does have the feature that it requires no + extra memory. + */ + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w16_clm_multiply_2 (gf_t *gf, gf_val_32_t a16, gf_val_32_t b16) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a16, 0); + b = _mm_insert_epi32 (a, b16, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + /* Ben: Do prim_poly reduction twice. We are guaranteed that we will only + have to do the reduction at most twice, because (w-2)/z == 2. Where + z is equal to the number of zeros after the leading 1 + + _mm_clmulepi64_si128 is the carryless multiply operation. Here + _mm_srli_si128 shifts the result to the right by 2 bytes. This allows + us to multiply the prim_poly by the leading bits of the result. We + then xor the result of that operation back with the result.*/ + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w16_clm_multiply_3 (gf_t *gf, gf_val_32_t a16, gf_val_32_t b16) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a16, 0); + b = _mm_insert_epi32 (a, b16, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w16_clm_multiply_4 (gf_t *gf, gf_val_32_t a16, gf_val_32_t b16) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a16, 0); + b = _mm_insert_epi32 (a, b16, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 2), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + + +static +inline + gf_val_32_t +gf_w16_shift_multiply (gf_t *gf, gf_val_32_t a16, gf_val_32_t b16) +{ + gf_val_32_t product, i, pp, a, b; + gf_internal_t *h; + + a = a16; + b = b16; + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + product = 0; + + for (i = 0; i < GF_FIELD_WIDTH; i++) { + if (a & (1 << i)) product ^= (b << i); + } + for (i = (GF_FIELD_WIDTH*2-2); i >= GF_FIELD_WIDTH; i--) { + if (product & (1 << i)) product ^= (pp << (i-GF_FIELD_WIDTH)); + } + return product; +} + +static +int gf_w16_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_w16_shift_multiply) + return 1; +} + +static +int gf_w16_cfm_init(gf_t *gf) +{ +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /*Ben: Determining how many reductions to do */ + + if ((0xfe00 & h->prim_poly) == 0) { + SET_FUNCTION(gf,multiply,w32,gf_w16_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_clm_multiply_region_from_single_2) + } else if((0xf000 & h->prim_poly) == 0) { + SET_FUNCTION(gf,multiply,w32,gf_w16_clm_multiply_3) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_clm_multiply_region_from_single_3) + } else if ((0xe000 & h->prim_poly) == 0) { + SET_FUNCTION(gf,multiply,w32,gf_w16_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_clm_multiply_region_from_single_4) + } else { + return 0; + } + return 1; + } +#endif + + return 0; +} + +/* KMG: GF_MULT_LOGTABLE: */ + +static +void +gf_w16_log_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint16_t *s16, *d16; + int lv; + struct gf_w16_logtable_data *ltd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + + lv = ltd->log_tbl[val]; + + if (xor) { + while (d16 < (uint16_t *) rd.d_top) { + *d16 ^= (*s16 == 0 ? 0 : ltd->antilog_tbl[lv + ltd->log_tbl[*s16]]); + d16++; + s16++; + } + } else { + while (d16 < (uint16_t *) rd.d_top) { + *d16 = (*s16 == 0 ? 0 : ltd->antilog_tbl[lv + ltd->log_tbl[*s16]]); + d16++; + s16++; + } + } + gf_do_final_region_alignment(&rd); +} + +static +inline +gf_val_32_t +gf_w16_log_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w16_logtable_data *ltd; + + ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (a == 0 || b == 0) ? 0 : ltd->antilog_tbl[(int) ltd->log_tbl[a] + (int) ltd->log_tbl[b]]; +} + +static +inline +gf_val_32_t +gf_w16_log_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int log_sum = 0; + struct gf_w16_logtable_data *ltd; + + if (a == 0 || b == 0) return 0; + ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + + log_sum = (int) ltd->log_tbl[a] - (int) ltd->log_tbl[b]; + return (ltd->d_antilog[log_sum]); +} + +static +gf_val_32_t +gf_w16_log_inverse(gf_t *gf, gf_val_32_t a) +{ + struct gf_w16_logtable_data *ltd; + + ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (ltd->inv_tbl[a]); +} + +static +int gf_w16_log_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w16_logtable_data *ltd; + int i, b; + int check = 0; + + h = (gf_internal_t *) gf->scratch; + ltd = h->private; + + for (i = 0; i < GF_MULT_GROUP_SIZE+1; i++) + ltd->log_tbl[i] = 0; + ltd->d_antilog = ltd->antilog_tbl + GF_MULT_GROUP_SIZE; + + b = 1; + for (i = 0; i < GF_MULT_GROUP_SIZE; i++) { + if (ltd->log_tbl[b] != 0) check = 1; + ltd->log_tbl[b] = i; + ltd->antilog_tbl[i] = b; + ltd->antilog_tbl[i+GF_MULT_GROUP_SIZE] = b; + b <<= 1; + if (b & GF_FIELD_SIZE) { + b = b ^ h->prim_poly; + } + } + + /* If you can't construct the log table, there's a problem. This code is used for + some other implementations (e.g. in SPLIT), so if the log table doesn't work in + that instance, use CARRY_FREE / SHIFT instead. */ + + if (check) { + if (h->mult_type != GF_MULT_LOG_TABLE) { + if (gf_cpu_supports_intel_pclmul) { + return gf_w16_cfm_init(gf); + } + return gf_w16_shift_init(gf); + } else { + _gf_errno = GF_E_LOGPOLY; + return 0; + } + } + + ltd->inv_tbl[0] = 0; /* Not really, but we need to fill it with something */ + ltd->inv_tbl[1] = 1; + for (i = 2; i < GF_FIELD_SIZE; i++) { + ltd->inv_tbl[i] = ltd->antilog_tbl[GF_MULT_GROUP_SIZE-ltd->log_tbl[i]]; + } + + SET_FUNCTION(gf,inverse,w32,gf_w16_log_inverse) + SET_FUNCTION(gf,divide,w32,gf_w16_log_divide) + SET_FUNCTION(gf,multiply,w32,gf_w16_log_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_log_multiply_region) + + return 1; +} + +/* JSP: GF_MULT_SPLIT_TABLE: Using 8 multiplication tables to leverage SSE instructions. +*/ + + +/* Ben: Does alternate mapping multiplication using a split table in the + lazy method without sse instructions*/ + +static +void +gf_w16_split_4_16_lazy_nosse_altmap_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t i, j, c, prod; + uint8_t *s8, *d8, *top; + uint16_t table[4][16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + /*Ben: Constructs lazy multiplication table*/ + + for (j = 0; j < 16; j++) { + for (i = 0; i < 4; i++) { + c = (j << (i*4)); + table[i][j] = gf->multiply.w32(gf, c, val); + } + } + + /*Ben: s8 is the start of source, d8 is the start of dest, top is end of dest region. */ + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + + + while (d8 < top) { + + /*Ben: Multiplies across 16 two byte quantities using alternate mapping + high bits are on the left, low bits are on the right. */ + + for (j=0;j<16;j++) { + + /*Ben: If the xor flag is set, the product should include what is in dest */ + prod = (xor) ? ((uint16_t)(*d8)<<8) ^ *(d8+16) : 0; + + /*Ben: xors all 4 table lookups into the product variable*/ + + prod ^= ((table[0][*(s8+16)&0xf]) ^ + (table[1][(*(s8+16)&0xf0)>>4]) ^ + (table[2][*(s8)&0xf]) ^ + (table[3][(*(s8)&0xf0)>>4])); + + /*Ben: Stores product in the destination and moves on*/ + + *d8 = (uint8_t)(prod >> 8); + *(d8+16) = (uint8_t)(prod & 0x00ff); + s8++; + d8++; + } + s8+=16; + d8+=16; + } + gf_do_final_region_alignment(&rd); +} + +static + void +gf_w16_split_4_16_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t i, j, a, c, prod; + uint16_t *s16, *d16, *top; + uint16_t table[4][16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + for (j = 0; j < 16; j++) { + for (i = 0; i < 4; i++) { + c = (j << (i*4)); + table[i][j] = gf->multiply.w32(gf, c, val); + } + } + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + top = (uint16_t *) rd.d_top; + + while (d16 < top) { + a = *s16; + prod = (xor) ? *d16 : 0; + for (i = 0; i < 4; i++) { + prod ^= table[i][a&0xf]; + a >>= 4; + } + *d16 = prod; + s16++; + d16++; + } +} + +static +void +gf_w16_split_8_16_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t j, k, v, a, prod, *s64, *d64, *top64; + gf_internal_t *h; + uint64_t htable[256], ltable[256]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + + v = val; + ltable[0] = 0; + for (j = 1; j < 256; j <<= 1) { + for (k = 0; k < j; k++) ltable[k^j] = (v ^ ltable[k]); + v = GF_MULTBY_TWO(v); + } + htable[0] = 0; + for (j = 1; j < 256; j <<= 1) { + for (k = 0; k < j; k++) htable[k^j] = (v ^ htable[k]); + v = GF_MULTBY_TWO(v); + } + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top64 = (uint64_t *) rd.d_top; + +/* Does Unrolling Matter? -- Doesn't seem to. + while (d64 != top64) { + a = *s64; + + prod = htable[a >> 56]; + a <<= 8; + prod ^= ltable[a >> 56]; + a <<= 8; + prod <<= 16; + + prod ^= htable[a >> 56]; + a <<= 8; + prod ^= ltable[a >> 56]; + a <<= 8; + prod <<= 16; + + prod ^= htable[a >> 56]; + a <<= 8; + prod ^= ltable[a >> 56]; + a <<= 8; + prod <<= 16; + + prod ^= htable[a >> 56]; + a <<= 8; + prod ^= ltable[a >> 56]; + prod ^= ((xor) ? *d64 : 0); + *d64 = prod; + s64++; + d64++; + } +*/ + + while (d64 != top64) { + a = *s64; + + prod = 0; + for (j = 0; j < 4; j++) { + prod <<= 16; + prod ^= htable[a >> 56]; + a <<= 8; + prod ^= ltable[a >> 56]; + a <<= 8; + } + + //JSP: We can move the conditional outside the while loop, but we need to fully test it to understand which is better. + + prod ^= ((xor) ? *d64 : 0); + *d64 = prod; + s64++; + d64++; + } + gf_do_final_region_alignment(&rd); +} + +static void +gf_w16_table_lazy_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t c; + gf_internal_t *h; + struct gf_w16_lazytable_data *ltd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + ltd = (struct gf_w16_lazytable_data *) h->private; + + ltd->lazytable[0] = 0; + + /* + a = val; + c = 1; + pp = h->prim_poly; + + do { + ltd->lazytable[c] = a; + c <<= 1; + if (c & (1 << GF_FIELD_WIDTH)) c ^= pp; + a <<= 1; + if (a & (1 << GF_FIELD_WIDTH)) a ^= pp; + } while (c != 1); + */ + + for (c = 1; c < GF_FIELD_SIZE; c++) { + ltd->lazytable[c] = gf_w16_shift_multiply(gf, c, val); + } + + gf_two_byte_region_table_multiply(&rd, ltd->lazytable); + gf_do_final_region_alignment(&rd); +} + +#ifdef INTEL_SSSE3 +static +void +gf_w16_split_4_16_lazy_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t i, j, *s64, *d64, *top64;; + uint64_t c, prod; + uint8_t low[4][16]; + uint8_t high[4][16]; + gf_region_data rd; + + __m128i mask, ta, tb, ti, tpl, tph, tlow[4], thigh[4], tta, ttb, lmask; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + for (j = 0; j < 16; j++) { + for (i = 0; i < 4; i++) { + c = (j << (i*4)); + prod = gf->multiply.w32(gf, c, val); + low[i][j] = (prod & 0xff); + high[i][j] = (prod >> 8); + } + } + + for (i = 0; i < 4; i++) { + tlow[i] = _mm_loadu_si128((__m128i *)low[i]); + thigh[i] = _mm_loadu_si128((__m128i *)high[i]); + } + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top64 = (uint64_t *) rd.d_top; + + mask = _mm_set1_epi8 (0x0f); + lmask = _mm_set1_epi16 (0xff); + + if (xor) { + while (d64 != top64) { + + ta = _mm_load_si128((__m128i *) s64); + tb = _mm_load_si128((__m128i *) (s64+2)); + + tta = _mm_srli_epi16(ta, 8); + ttb = _mm_srli_epi16(tb, 8); + tpl = _mm_and_si128(tb, lmask); + tph = _mm_and_si128(ta, lmask); + + tb = _mm_packus_epi16(tpl, tph); + ta = _mm_packus_epi16(ttb, tta); + + ti = _mm_and_si128 (mask, tb); + tph = _mm_shuffle_epi8 (thigh[0], ti); + tpl = _mm_shuffle_epi8 (tlow[0], ti); + + tb = _mm_srli_epi16(tb, 4); + ti = _mm_and_si128 (mask, tb); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph); + + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph); + + ta = _mm_srli_epi16(ta, 4); + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph); + + ta = _mm_unpackhi_epi8(tpl, tph); + tb = _mm_unpacklo_epi8(tpl, tph); + + tta = _mm_load_si128((__m128i *) d64); + ta = _mm_xor_si128(ta, tta); + ttb = _mm_load_si128((__m128i *) (d64+2)); + tb = _mm_xor_si128(tb, ttb); + _mm_store_si128 ((__m128i *)d64, ta); + _mm_store_si128 ((__m128i *)(d64+2), tb); + + d64 += 4; + s64 += 4; + + } + } else { + while (d64 != top64) { + + ta = _mm_load_si128((__m128i *) s64); + tb = _mm_load_si128((__m128i *) (s64+2)); + + tta = _mm_srli_epi16(ta, 8); + ttb = _mm_srli_epi16(tb, 8); + tpl = _mm_and_si128(tb, lmask); + tph = _mm_and_si128(ta, lmask); + + tb = _mm_packus_epi16(tpl, tph); + ta = _mm_packus_epi16(ttb, tta); + + ti = _mm_and_si128 (mask, tb); + tph = _mm_shuffle_epi8 (thigh[0], ti); + tpl = _mm_shuffle_epi8 (tlow[0], ti); + + tb = _mm_srli_epi16(tb, 4); + ti = _mm_and_si128 (mask, tb); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph); + + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph); + + ta = _mm_srli_epi16(ta, 4); + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph); + + ta = _mm_unpackhi_epi8(tpl, tph); + tb = _mm_unpacklo_epi8(tpl, tph); + + _mm_store_si128 ((__m128i *)d64, ta); + _mm_store_si128 ((__m128i *)(d64+2), tb); + + d64 += 4; + s64 += 4; + } + } + + gf_do_final_region_alignment(&rd); +} +#endif + +#ifdef INTEL_SSSE3 +static +void +gf_w16_split_4_16_lazy_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t i, j, *s64, *d64, *top64;; + uint64_t c, prod; + uint8_t low[4][16]; + uint8_t high[4][16]; + gf_region_data rd; + __m128i mask, ta, tb, ti, tpl, tph, tlow[4], thigh[4]; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + for (j = 0; j < 16; j++) { + for (i = 0; i < 4; i++) { + c = (j << (i*4)); + prod = gf->multiply.w32(gf, c, val); + low[i][j] = (prod & 0xff); + high[i][j] = (prod >> 8); + } + } + + for (i = 0; i < 4; i++) { + tlow[i] = _mm_loadu_si128((__m128i *)low[i]); + thigh[i] = _mm_loadu_si128((__m128i *)high[i]); + } + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top64 = (uint64_t *) rd.d_top; + + mask = _mm_set1_epi8 (0x0f); + + if (xor) { + while (d64 != top64) { + + ta = _mm_load_si128((__m128i *) s64); + tb = _mm_load_si128((__m128i *) (s64+2)); + + ti = _mm_and_si128 (mask, tb); + tph = _mm_shuffle_epi8 (thigh[0], ti); + tpl = _mm_shuffle_epi8 (tlow[0], ti); + + tb = _mm_srli_epi16(tb, 4); + ti = _mm_and_si128 (mask, tb); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph); + + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph); + + ta = _mm_srli_epi16(ta, 4); + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph); + + ta = _mm_load_si128((__m128i *) d64); + tph = _mm_xor_si128(tph, ta); + _mm_store_si128 ((__m128i *)d64, tph); + tb = _mm_load_si128((__m128i *) (d64+2)); + tpl = _mm_xor_si128(tpl, tb); + _mm_store_si128 ((__m128i *)(d64+2), tpl); + + d64 += 4; + s64 += 4; + } + } else { + while (d64 != top64) { + + ta = _mm_load_si128((__m128i *) s64); + tb = _mm_load_si128((__m128i *) (s64+2)); + + ti = _mm_and_si128 (mask, tb); + tph = _mm_shuffle_epi8 (thigh[0], ti); + tpl = _mm_shuffle_epi8 (tlow[0], ti); + + tb = _mm_srli_epi16(tb, 4); + ti = _mm_and_si128 (mask, tb); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[1], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[1], ti), tph); + + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[2], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[2], ti), tph); + + ta = _mm_srli_epi16(ta, 4); + ti = _mm_and_si128 (mask, ta); + tpl = _mm_xor_si128(_mm_shuffle_epi8 (tlow[3], ti), tpl); + tph = _mm_xor_si128(_mm_shuffle_epi8 (thigh[3], ti), tph); + + _mm_store_si128 ((__m128i *)d64, tph); + _mm_store_si128 ((__m128i *)(d64+2), tpl); + + d64 += 4; + s64 += 4; + + } + } + gf_do_final_region_alignment(&rd); + +} +#endif + +uint32_t +gf_w16_split_8_8_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t alow, blow; + struct gf_w16_split_8_8_data *d8; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + d8 = (struct gf_w16_split_8_8_data *) h->private; + + alow = a & 0xff; + blow = b & 0xff; + a >>= 8; + b >>= 8; + + return d8->tables[0][alow][blow] ^ + d8->tables[1][alow][b] ^ + d8->tables[1][a][blow] ^ + d8->tables[2][a][b]; +} + +static +int gf_w16_split_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w16_split_8_8_data *d8; + int i, j, exp; + uint32_t p, basep, tmp; + + h = (gf_internal_t *) gf->scratch; + + if (h->arg1 == 8 && h->arg2 == 8) { + d8 = (struct gf_w16_split_8_8_data *) h->private; + basep = 1; + for (exp = 0; exp < 3; exp++) { + for (j = 0; j < 256; j++) d8->tables[exp][0][j] = 0; + for (i = 0; i < 256; i++) d8->tables[exp][i][0] = 0; + d8->tables[exp][1][1] = basep; + for (i = 2; i < 256; i++) { + if (i&1) { + p = d8->tables[exp][i^1][1]; + d8->tables[exp][i][1] = p ^ basep; + } else { + p = d8->tables[exp][i>>1][1]; + d8->tables[exp][i][1] = GF_MULTBY_TWO(p); + } + } + for (i = 1; i < 256; i++) { + p = d8->tables[exp][i][1]; + for (j = 1; j < 256; j++) { + if (j&1) { + d8->tables[exp][i][j] = d8->tables[exp][i][j^1] ^ p; + } else { + tmp = d8->tables[exp][i][j>>1]; + d8->tables[exp][i][j] = GF_MULTBY_TWO(tmp); + } + } + } + for (i = 0; i < 8; i++) basep = GF_MULTBY_TWO(basep); + } + SET_FUNCTION(gf,multiply,w32,gf_w16_split_8_8_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_8_16_lazy_multiply_region) + return 1; + + } + + /* We'll be using LOG for multiplication, unless the pp isn't primitive. + In that case, we'll be using SHIFT. */ + + gf_w16_log_init(gf); + + /* Defaults */ + +#ifdef INTEL_SSSE3 + if (gf_cpu_supports_intel_ssse3) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_sse_multiply_region) + } else { +#elif ARM_NEON + if (gf_cpu_supports_arm_neon) { + gf_w16_neon_split_init(gf); + } else { +#endif + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_8_16_lazy_multiply_region) +#if defined(INTEL_SSSE3) || defined(ARM_NEON) + } +#endif + + if ((h->arg1 == 8 && h->arg2 == 16) || (h->arg2 == 8 && h->arg1 == 16)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_8_16_lazy_multiply_region) + + } else if ((h->arg1 == 4 && h->arg2 == 16) || (h->arg2 == 4 && h->arg1 == 16)) { +#if defined(INTEL_SSSE3) || defined(ARM_NEON) + if (gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon) { + if(h->region_type & GF_REGION_ALTMAP && h->region_type & GF_REGION_NOSIMD) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_nosse_altmap_multiply_region) + else if(h->region_type & GF_REGION_NOSIMD) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_multiply_region) +#if defined(INTEL_SSSE3) + else if(h->region_type & GF_REGION_ALTMAP && gf_cpu_supports_intel_ssse3) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_sse_altmap_multiply_region) +#endif + } else { +#endif + if(h->region_type & GF_REGION_SIMD) + return 0; + else if(h->region_type & GF_REGION_ALTMAP) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_nosse_altmap_multiply_region) + else + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_multiply_region) +#if defined(INTEL_SSSE3) || defined(ARM_NEON) + } +#endif + } + + return 1; +} + +static +int gf_w16_table_init(gf_t *gf) +{ + gf_w16_log_init(gf); + + SET_FUNCTION(gf,multiply_region,w32,gf_w16_table_lazy_multiply_region) + return 1; +} + +static +void +gf_w16_log_zero_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint16_t lv; + int i; + uint16_t *s16, *d16, *top16; + struct gf_w16_zero_logtable_data *ltd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + ltd = (struct gf_w16_zero_logtable_data*) ((gf_internal_t *) gf->scratch)->private; + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + top16 = (uint16_t *) rd.d_top; + bytes = top16 - d16; + + lv = ltd->log_tbl[val]; + + if (xor) { + for (i = 0; i < bytes; i++) { + d16[i] ^= (ltd->antilog_tbl[lv + ltd->log_tbl[s16[i]]]); + } + } else { + for (i = 0; i < bytes; i++) { + d16[i] = (ltd->antilog_tbl[lv + ltd->log_tbl[s16[i]]]); + } + } + + /* This isn't necessary. */ + + gf_do_final_region_alignment(&rd); +} + +/* Here -- double-check Kevin */ + +static +inline +gf_val_32_t +gf_w16_log_zero_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w16_zero_logtable_data *ltd; + + ltd = (struct gf_w16_zero_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return ltd->antilog_tbl[ltd->log_tbl[a] + ltd->log_tbl[b]]; +} + +static +inline +gf_val_32_t +gf_w16_log_zero_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int log_sum = 0; + struct gf_w16_zero_logtable_data *ltd; + + if (a == 0 || b == 0) return 0; + ltd = (struct gf_w16_zero_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + + log_sum = ltd->log_tbl[a] - ltd->log_tbl[b] + (GF_MULT_GROUP_SIZE); + return (ltd->antilog_tbl[log_sum]); +} + +static +gf_val_32_t +gf_w16_log_zero_inverse (gf_t *gf, gf_val_32_t a) +{ + struct gf_w16_zero_logtable_data *ltd; + + ltd = (struct gf_w16_zero_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (ltd->inv_tbl[a]); +} + +static +inline +gf_val_32_t +gf_w16_bytwo_p_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + + prod = 0; + pmask = 0x8000; + amask = 0x8000; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + +static +inline +gf_val_32_t +gf_w16_bytwo_b_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = 0x8000; + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static +void +gf_w16_bytwo_p_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, prod, amask; + gf_region_data rd; + struct gf_w16_bytwo_data *btd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w16_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x8000; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x8000; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +#define BYTWO_P_ONESTEP {\ + SSE_AB2(pp, m1 ,m2, prod, t1, t2); \ + t1 = _mm_and_si128(v, one); \ + t1 = _mm_sub_epi16(t1, one); \ + t1 = _mm_and_si128(t1, ta); \ + prod = _mm_xor_si128(prod, t1); \ + v = _mm_srli_epi64(v, 1); } + +#ifdef INTEL_SSE2 +static +void +gf_w16_bytwo_p_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + uint32_t vrev; + __m128i pp, m1, m2, ta, prod, t1, t2, tp, one, v; + struct gf_w16_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w16_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + vrev = 0; + for (i = 0; i < 16; i++) { + vrev <<= 1; + if (!(val & (1 << i))) vrev |= 1; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi16(btd->prim_poly&0xffff); + m1 = _mm_set1_epi16((btd->mask1)&0xffff); + m2 = _mm_set1_epi16((btd->mask2)&0xffff); + one = _mm_set1_epi16(1); + + while (d8 < (uint8_t *) rd.d_top) { + prod = _mm_setzero_si128(); + v = _mm_set1_epi16(vrev); + ta = _mm_load_si128((__m128i *) s8); + tp = (!xor) ? _mm_setzero_si128() : _mm_load_si128((__m128i *) d8); + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + _mm_store_si128((__m128i *) d8, _mm_xor_si128(prod, tp)); + d8 += 16; + s8 += 16; + } + gf_do_final_region_alignment(&rd); +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w16_bytwo_b_sse_region_2_noxor(gf_region_data *rd, struct gf_w16_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi16(btd->prim_poly&0xffff); + m1 = _mm_set1_epi16((btd->mask1)&0xffff); + m2 = _mm_set1_epi16((btd->mask2)&0xffff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w16_bytwo_b_sse_region_2_xor(gf_region_data *rd, struct gf_w16_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi16(btd->prim_poly&0xffff); + m1 = _mm_set1_epi16((btd->mask1)&0xffff); + m2 = _mm_set1_epi16((btd->mask2)&0xffff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + + +#ifdef INTEL_SSE2 +static +void +gf_w16_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int itb; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + struct gf_w16_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w16_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + if (val == 2) { + if (xor) { + gf_w16_bytwo_b_sse_region_2_xor(&rd, btd); + } else { + gf_w16_bytwo_b_sse_region_2_noxor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi16(btd->prim_poly&0xffff); + m1 = _mm_set1_epi16((btd->mask1)&0xffff); + m2 = _mm_set1_epi16((btd->mask2)&0xffff); + + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = (!xor) ? _mm_setzero_si128() : _mm_load_si128 ((__m128i *)(d8)); + itb = val; + while (1) { + if (itb & 1) vb = _mm_xor_si128(vb, va); + itb >>= 1; + if (itb == 0) break; + SSE_AB2(pp, m1, m2, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + + gf_do_final_region_alignment(&rd); +} +#endif + +static +void +gf_w16_bytwo_b_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, tb, prod; + struct gf_w16_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w16_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + switch (val) { + case 2: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 3: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 4: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 5: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + default: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + prod = *d64 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + prod = 0 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } + break; + } + gf_do_final_region_alignment(&rd); +} + +static +int gf_w16_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + uint64_t ip, m1, m2; + struct gf_w16_bytwo_data *btd; + + h = (gf_internal_t *) gf->scratch; + btd = (struct gf_w16_bytwo_data *) (h->private); + ip = h->prim_poly & 0xffff; + m1 = 0xfffe; + m2 = 0x8000; + btd->prim_poly = 0; + btd->mask1 = 0; + btd->mask2 = 0; + + while (ip != 0) { + btd->prim_poly |= ip; + btd->mask1 |= m1; + btd->mask2 |= m2; + ip <<= GF_FIELD_WIDTH; + m1 <<= GF_FIELD_WIDTH; + m2 <<= GF_FIELD_WIDTH; + } + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w32,gf_w16_bytwo_p_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_bytwo_p_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w16_bytwo_p_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } else { + SET_FUNCTION(gf,multiply,w32,gf_w16_bytwo_b_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_bytwo_b_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w16_bytwo_b_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } + + return 1; +} + +static +int gf_w16_log_zero_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w16_zero_logtable_data *ltd; + int i, b; + + h = (gf_internal_t *) gf->scratch; + ltd = h->private; + + ltd->log_tbl[0] = (-GF_MULT_GROUP_SIZE) + 1; + + bzero(&(ltd->_antilog_tbl[0]), sizeof(ltd->_antilog_tbl)); + + ltd->antilog_tbl = &(ltd->_antilog_tbl[GF_FIELD_SIZE * 2]); + + b = 1; + for (i = 0; i < GF_MULT_GROUP_SIZE; i++) { + ltd->log_tbl[b] = (uint16_t)i; + ltd->antilog_tbl[i] = (uint16_t)b; + ltd->antilog_tbl[i+GF_MULT_GROUP_SIZE] = (uint16_t)b; + b <<= 1; + if (b & GF_FIELD_SIZE) { + b = b ^ h->prim_poly; + } + } + ltd->inv_tbl[0] = 0; /* Not really, but we need to fill it with something */ + ltd->inv_tbl[1] = 1; + for (i = 2; i < GF_FIELD_SIZE; i++) { + ltd->inv_tbl[i] = ltd->antilog_tbl[GF_MULT_GROUP_SIZE-ltd->log_tbl[i]]; + } + + SET_FUNCTION(gf,inverse,w32,gf_w16_log_zero_inverse) + SET_FUNCTION(gf,divide,w32,gf_w16_log_zero_divide) + SET_FUNCTION(gf,multiply,w32,gf_w16_log_zero_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_log_zero_multiply_region) + return 1; +} + +static +gf_val_32_t +gf_w16_composite_multiply_recursive(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t b0 = b & 0x00ff; + uint8_t b1 = (b & 0xff00) >> 8; + uint8_t a0 = a & 0x00ff; + uint8_t a1 = (a & 0xff00) >> 8; + uint8_t a1b1; + uint16_t rv; + + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + rv = ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | ((base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 8)); + return rv; +} + +static +gf_val_32_t +gf_w16_composite_multiply_inline(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint8_t b0 = b & 0x00ff; + uint8_t b1 = (b & 0xff00) >> 8; + uint8_t a0 = a & 0x00ff; + uint8_t a1 = (a & 0xff00) >> 8; + uint8_t a1b1, *mt; + uint16_t rv; + struct gf_w16_composite_data *cd; + + cd = (struct gf_w16_composite_data *) h->private; + mt = cd->mult_table; + + a1b1 = GF_W8_INLINE_MULTDIV(mt, a1, b1); + + rv = ((GF_W8_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | ((GF_W8_INLINE_MULTDIV(mt, a1, b0) ^ GF_W8_INLINE_MULTDIV(mt, a0, b1) ^ GF_W8_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 8)); + return rv; +} + +/* + * Composite field division trick (explained in 2007 tech report) + * + * Compute a / b = a*b^-1, where p(x) = x^2 + sx + 1 + * + * let c = b^-1 + * + * c*b = (s*b1c1+b1c0+b0c1)x+(b1c1+b0c0) + * + * want (s*b1c1+b1c0+b0c1) = 0 and (b1c1+b0c0) = 1 + * + * let d = b1c1 and d+1 = b0c0 + * + * solve s*b1c1+b1c0+b0c1 = 0 + * + * solution: d = (b1b0^-1)(b1b0^-1+b0b1^-1+s)^-1 + * + * c0 = (d+1)b0^-1 + * c1 = d*b1^-1 + * + * a / b = a * c + */ + +static +gf_val_32_t +gf_w16_composite_inverse(gf_t *gf, gf_val_32_t a) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t a0 = a & 0x00ff; + uint8_t a1 = (a & 0xff00) >> 8; + uint8_t c0, c1, d, tmp; + uint16_t c; + uint8_t a0inv, a1inv; + + if (a0 == 0) { + a1inv = base_gf->inverse.w32(base_gf, a1); + c0 = base_gf->multiply.w32(base_gf, a1inv, h->prim_poly); + c1 = a1inv; + } else if (a1 == 0) { + c0 = base_gf->inverse.w32(base_gf, a0); + c1 = 0; + } else { + a1inv = base_gf->inverse.w32(base_gf, a1); + a0inv = base_gf->inverse.w32(base_gf, a0); + + d = base_gf->multiply.w32(base_gf, a1, a0inv); + + tmp = (base_gf->multiply.w32(base_gf, a1, a0inv) ^ base_gf->multiply.w32(base_gf, a0, a1inv) ^ h->prim_poly); + tmp = base_gf->inverse.w32(base_gf, tmp); + + d = base_gf->multiply.w32(base_gf, d, tmp); + + c0 = base_gf->multiply.w32(base_gf, (d^1), a0inv); + c1 = base_gf->multiply.w32(base_gf, d, a1inv); + } + + c = c0 | (c1 << 8); + + return c; +} + +static +void +gf_w16_composite_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t b0 = val & 0x00ff; + uint8_t b1 = (val & 0xff00) >> 8; + uint16_t *s16, *d16, *top; + uint8_t a0, a1, a1b1, *mt; + gf_region_data rd; + struct gf_w16_composite_data *cd; + + cd = (struct gf_w16_composite_data *) h->private; + mt = cd->mult_table; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + + s16 = rd.s_start; + d16 = rd.d_start; + top = rd.d_top; + + if (mt == NULL) { + if (xor) { + while (d16 < top) { + a0 = (*s16) & 0x00ff; + a1 = ((*s16) & 0xff00) >> 8; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + (*d16) ^= ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ + base_gf->multiply.w32(base_gf, a0, b1) ^ + base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 8)); + s16++; + d16++; + } + } else { + while (d16 < top) { + a0 = (*s16) & 0x00ff; + a1 = ((*s16) & 0xff00) >> 8; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + (*d16) = ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ + base_gf->multiply.w32(base_gf, a0, b1) ^ + base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 8)); + s16++; + d16++; + } + } + } else { + if (xor) { + while (d16 < top) { + a0 = (*s16) & 0x00ff; + a1 = ((*s16) & 0xff00) >> 8; + a1b1 = GF_W8_INLINE_MULTDIV(mt, a1, b1); + + (*d16) ^= ((GF_W8_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | + ((GF_W8_INLINE_MULTDIV(mt, a1, b0) ^ + GF_W8_INLINE_MULTDIV(mt, a0, b1) ^ + GF_W8_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 8)); + s16++; + d16++; + } + } else { + while (d16 < top) { + a0 = (*s16) & 0x00ff; + a1 = ((*s16) & 0xff00) >> 8; + a1b1 = GF_W8_INLINE_MULTDIV(mt, a1, b1); + + (*d16) = ((GF_W8_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | + ((GF_W8_INLINE_MULTDIV(mt, a1, b0) ^ + GF_W8_INLINE_MULTDIV(mt, a0, b1) ^ + GF_W8_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 8)); + s16++; + d16++; + } + } + } +} + +static +void +gf_w16_composite_multiply_region_alt(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t val0 = val & 0x00ff; + uint8_t val1 = (val & 0xff00) >> 8; + gf_region_data rd; + int sub_reg_size; + uint8_t *slow, *shigh; + uint8_t *dlow, *dhigh, *top;; + + /* JSP: I want the two pointers aligned wrt each other on 16 byte + boundaries. So I'm going to make sure that the area on + which the two operate is a multiple of 32. Of course, that + junks up the mapping, but so be it -- that's why we have extract_word.... */ + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + slow = (uint8_t *) rd.s_start; + dlow = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_reg_size = (top - dlow)/2; + shigh = slow + sub_reg_size; + dhigh = dlow + sub_reg_size; + + base_gf->multiply_region.w32(base_gf, slow, dlow, val0, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dlow, val1, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, slow, dhigh, val1, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, val0, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, base_gf->multiply.w32(base_gf, h->prim_poly, val1), sub_reg_size, 1); + + gf_do_final_region_alignment(&rd); +} + +static +int gf_w16_composite_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + struct gf_w16_composite_data *cd; + + if (h->base_gf == NULL) return 0; + + cd = (struct gf_w16_composite_data *) h->private; + cd->mult_table = gf_w8_get_mult_table(h->base_gf); + + if (h->region_type & GF_REGION_ALTMAP) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_composite_multiply_region_alt) + } else { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_composite_multiply_region) + } + + if (cd->mult_table == NULL) { + SET_FUNCTION(gf,multiply,w32,gf_w16_composite_multiply_recursive) + } else { + SET_FUNCTION(gf,multiply,w32,gf_w16_composite_multiply_inline) + } + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,gf_w16_composite_inverse) + + return 1; +} + +static +void +gf_w16_group_4_set_shift_tables(uint16_t *shift, uint16_t val, gf_internal_t *h) +{ + int i, j; + + shift[0] = 0; + for (i = 0; i < 16; i += 2) { + j = (shift[i>>1] << 1); + if (j & (1 << 16)) j ^= h->prim_poly; + shift[i] = j; + shift[i^1] = j^val; + } +} + +static +inline +gf_val_32_t +gf_w16_group_4_4_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint16_t p, l, ind, r, a16; + + struct gf_w16_group_4_4_data *d44; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + d44 = (struct gf_w16_group_4_4_data *) h->private; + gf_w16_group_4_set_shift_tables(d44->shift, b, h); + + a16 = a; + ind = a16 >> 12; + a16 <<= 4; + p = d44->shift[ind]; + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + a16 <<= 4; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + a16 <<= 4; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + return p; +} + +static +void gf_w16_group_4_4_region_multiply(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint16_t p, l, ind, r, a16, p16; + struct gf_w16_group_4_4_data *d44; + gf_region_data rd; + uint16_t *s16, *d16, *top; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + d44 = (struct gf_w16_group_4_4_data *) h->private; + gf_w16_group_4_set_shift_tables(d44->shift, val, h); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 2); + gf_do_initial_region_alignment(&rd); + + s16 = (uint16_t *) rd.s_start; + d16 = (uint16_t *) rd.d_start; + top = (uint16_t *) rd.d_top; + + while (d16 < top) { + a16 = *s16; + p16 = (xor) ? *d16 : 0; + ind = a16 >> 12; + a16 <<= 4; + p = d44->shift[ind]; + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + a16 <<= 4; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + a16 <<= 4; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + r = p & 0xfff; + l = p >> 12; + ind = a16 >> 12; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (r << 4)); + p ^= p16; + *d16 = p; + d16++; + s16++; + } + gf_do_final_region_alignment(&rd); +} + +static +int gf_w16_group_init(gf_t *gf) +{ + int i, j, p; + struct gf_w16_group_4_4_data *d44; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + d44 = (struct gf_w16_group_4_4_data *) h->private; + d44->reduce[0] = 0; + for (i = 0; i < 16; i++) { + p = 0; + for (j = 0; j < 4; j++) { + if (i & (1 << j)) p ^= (h->prim_poly << j); + } + d44->reduce[p>>16] = (p&0xffff); + } + + SET_FUNCTION(gf,multiply,w32,gf_w16_group_4_4_multiply) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_group_4_4_region_multiply) + + return 1; +} + +int gf_w16_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + switch(mult_type) + { + case GF_MULT_TABLE: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_lazytable_data) + 64; + break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_bytwo_data); + break; + case GF_MULT_LOG_ZERO: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_zero_logtable_data) + 64; + break; + case GF_MULT_LOG_TABLE: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_logtable_data) + 64; + break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: + if (arg1 == 8 && arg2 == 8) { + return sizeof(gf_internal_t) + sizeof(struct gf_w16_split_8_8_data) + 64; + } else if ((arg1 == 8 && arg2 == 16) || (arg2 == 8 && arg1 == 16)) { + return sizeof(gf_internal_t) + sizeof(struct gf_w16_logtable_data) + 64; + } else if (mult_type == GF_MULT_DEFAULT || + (arg1 == 4 && arg2 == 16) || (arg2 == 4 && arg1 == 16)) { + return sizeof(gf_internal_t) + sizeof(struct gf_w16_logtable_data) + 64; + } + return 0; + break; + case GF_MULT_GROUP: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_group_4_4_data) + 64; + break; + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + case GF_MULT_COMPOSITE: + return sizeof(gf_internal_t) + sizeof(struct gf_w16_composite_data) + 64; + break; + + default: + return 0; + } + return 0; +} + +int gf_w16_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set default primitive polynomial / irreducible polynomial if needed */ + + if (h->prim_poly == 0) { + if (h->mult_type == GF_MULT_COMPOSITE) { + h->prim_poly = gf_composite_get_default_poly(h->base_gf); + if (h->prim_poly == 0) return 0; + } else { + + /* Allen: use the following primitive polynomial to make + carryless multiply work more efficiently for GF(2^16). + + h->prim_poly = 0x1002d; + + The following is the traditional primitive polynomial for GF(2^16) */ + + h->prim_poly = 0x1100b; + } + } + + if (h->mult_type != GF_MULT_COMPOSITE) h->prim_poly |= (1 << 16); + + SET_FUNCTION(gf,multiply,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,NULL) + + switch(h->mult_type) { + case GF_MULT_LOG_ZERO: if (gf_w16_log_zero_init(gf) == 0) return 0; break; + case GF_MULT_LOG_TABLE: if (gf_w16_log_init(gf) == 0) return 0; break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: if (gf_w16_split_init(gf) == 0) return 0; break; + case GF_MULT_TABLE: if (gf_w16_table_init(gf) == 0) return 0; break; + case GF_MULT_CARRY_FREE: if (gf_w16_cfm_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w16_shift_init(gf) == 0) return 0; break; + case GF_MULT_COMPOSITE: if (gf_w16_composite_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w16_bytwo_init(gf) == 0) return 0; break; + case GF_MULT_GROUP: if (gf_w16_group_init(gf) == 0) return 0; break; + default: return 0; + } + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w32,gf_w16_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w16_euclid) + } else if (h->divide_type == GF_DIVIDE_MATRIX) { + SET_FUNCTION(gf,divide,w32,gf_w16_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w16_matrix) + } + + if (gf->divide.w32 == NULL) { + SET_FUNCTION(gf,divide,w32,gf_w16_divide_from_inverse) + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w16_euclid) + } + + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w16_inverse_from_divide) + + if (h->region_type & GF_REGION_ALTMAP) { + if (h->mult_type == GF_MULT_COMPOSITE) { + SET_FUNCTION(gf,extract_word,w32,gf_w16_composite_extract_word) + } else { + SET_FUNCTION(gf,extract_word,w32,gf_w16_split_extract_word) + } + } else if (h->region_type == GF_REGION_CAUCHY) { + SET_FUNCTION(gf,multiply_region,w32,gf_wgen_cauchy_region) + SET_FUNCTION(gf,extract_word,w32,gf_wgen_extract_word) + } else { + SET_FUNCTION(gf,extract_word,w32,gf_w16_extract_word) + } + if (gf->multiply_region.w32 == NULL) { + SET_FUNCTION(gf,multiply_region,w32,gf_w16_multiply_region_from_single) + } + return 1; +} + +/* Inline setup functions */ + +uint16_t *gf_w16_get_log_table(gf_t *gf) +{ + struct gf_w16_logtable_data *ltd; + + if (gf->multiply.w32 == gf_w16_log_multiply) { + ltd = (struct gf_w16_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (uint16_t *) ltd->log_tbl; + } + return NULL; +} + +uint16_t *gf_w16_get_mult_alog_table(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w16_logtable_data *ltd; + + h = (gf_internal_t *) gf->scratch; + if (gf->multiply.w32 == gf_w16_log_multiply) { + ltd = (struct gf_w16_logtable_data *) h->private; + return (uint16_t *) ltd->antilog_tbl; + } + return NULL; +} + +uint16_t *gf_w16_get_div_alog_table(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w16_logtable_data *ltd; + + h = (gf_internal_t *) gf->scratch; + if (gf->multiply.w32 == gf_w16_log_multiply) { + ltd = (struct gf_w16_logtable_data *) h->private; + return (uint16_t *) ltd->d_antilog; + } + return NULL; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w32.c b/src/erasure-code/jerasure/gf-complete/src/gf_w32.c new file mode 100644 index 00000000..976b68b2 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w32.c @@ -0,0 +1,2810 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w32.c + * + * Routines for 32-bit Galois fields + */ + + +#include "gf_int.h" +#include +#include +#include "gf_w32.h" +#include "gf_cpu.h" + +#define MM_PRINT32(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 4) printf(" %02x%02x%02x%02x", blah[15-ii], blah[14-ii], blah[13-ii], blah[12-ii]); printf("\n"); } + +#define MM_PRINT8(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 1) printf("%s%02x", (ii%4==0) ? " " : " ", blah[15-ii]); printf("\n"); } + +#define AB2(ip, am1 ,am2, b, t1, t2) {\ + t1 = (b << 1) & am1;\ + t2 = b & am2; \ + t2 = ((t2 << 1) - (t2 >> (GF_FIELD_WIDTH-1))); \ + b = (t1 ^ (t2 & ip));} + +#define SSE_AB2(pp, m1 ,m2, va, t1, t2) {\ + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); \ + t2 = _mm_and_si128(va, m2); \ + t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \ + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); } + +static +inline +uint32_t gf_w32_inverse_from_divide (gf_t *gf, uint32_t a) +{ + return gf->divide.w32(gf, 1, a); +} + +static +inline +uint32_t gf_w32_divide_from_inverse (gf_t *gf, uint32_t a, uint32_t b) +{ + b = gf->inverse.w32(gf, b); + return gf->multiply.w32(gf, a, b); +} + +static +void +gf_w32_multiply_region_from_single(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int +xor) +{ + uint32_t i; + uint32_t *s32; + uint32_t *d32; + + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + d32[i] ^= gf->multiply.w32(gf, val, s32[i]); + } + } else { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + d32[i] = gf->multiply.w32(gf, val, s32[i]); + } + } +} + +#if defined(INTEL_SSE4_PCLMUL) + +static +void +gf_w32_clm_multiply_region_from_single_2(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + + uint32_t i; + uint32_t *s32; + uint32_t *d32; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } else { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) + +static +void +gf_w32_clm_multiply_region_from_single_3(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + + uint32_t i; + uint32_t *s32; + uint32_t *d32; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } else { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w32_clm_multiply_region_from_single_4(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + uint32_t i; + uint32_t *s32; + uint32_t *d32; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } else { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } +} +#endif + +static +inline +uint32_t gf_w32_euclid (gf_t *gf, uint32_t b) +{ + uint32_t e_i, e_im1, e_ip1; + uint32_t d_i, d_im1, d_ip1; + uint32_t y_i, y_im1, y_ip1; + uint32_t c_i; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = 32; + for (d_i = d_im1-1; ((1 << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (1 << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + d_ip1--; + if (e_ip1 == 0) return 0; + while ((e_ip1 & (1 << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w32(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +static +gf_val_32_t gf_w32_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint32_t *r32, rv; + + r32 = (uint32_t *) start; + rv = r32[index]; + return rv; +} + +static +gf_val_32_t gf_w32_composite_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int sub_size; + gf_internal_t *h; + uint8_t *r8, *top; + uint32_t a, b, *r32; + gf_region_data rd; + + h = (gf_internal_t *) gf->scratch; + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 32); + r32 = (uint32_t *) start; + if (r32 + index < (uint32_t *) rd.d_start) return r32[index]; + if (r32 + index >= (uint32_t *) rd.d_top) return r32[index]; + index -= (((uint32_t *) rd.d_start) - r32); + r8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_size = (top-r8)/2; + + a = h->base_gf->extract_word.w32(h->base_gf, r8, sub_size, index); + b = h->base_gf->extract_word.w32(h->base_gf, r8+sub_size, sub_size, index); + return (a | (b << 16)); +} + +static +gf_val_32_t gf_w32_split_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int i; + uint32_t *r32, rv; + uint8_t *r8; + gf_region_data rd; + + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 64); + r32 = (uint32_t *) start; + if (r32 + index < (uint32_t *) rd.d_start) return r32[index]; + if (r32 + index >= (uint32_t *) rd.d_top) return r32[index]; + index -= (((uint32_t *) rd.d_start) - r32); + r8 = (uint8_t *) rd.d_start; + r8 += ((index & 0xfffffff0)*4); + r8 += (index & 0xf); + r8 += 48; + rv =0; + for (i = 0; i < 4; i++) { + rv <<= 8; + rv |= *r8; + r8 -= 16; + } + return rv; +} + + +static +inline +uint32_t gf_w32_matrix (gf_t *gf, uint32_t b) +{ + return gf_bitmatrix_inverse(b, 32, ((gf_internal_t *) (gf->scratch))->prim_poly); +} + +/* JSP: GF_MULT_SHIFT: The world's dumbest multiplication algorithm. I only + include it for completeness. It does have the feature that it requires no + extra memory. +*/ + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_32_t +gf_w32_cfmgk_multiply (gf_t *gf, gf_val_32_t a32, gf_val_32_t b32) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i w; + __m128i g, q; + gf_internal_t * h = gf->scratch; + uint64_t g_star, q_plus; + + q_plus = *(uint64_t *) h->private; + g_star = *((uint64_t *) h->private + 1); + + a = _mm_insert_epi32 (_mm_setzero_si128(), a32, 0); + b = _mm_insert_epi32 (a, b32, 0); + g = _mm_insert_epi64 (a, g_star, 0); + q = _mm_insert_epi64 (a, q_plus, 0); + + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (q, _mm_srli_si128 (result, 4), 0); + w = _mm_clmulepi64_si128 (g, _mm_srli_si128 (w, 4), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) + +static +void +gf_w32_cfmgk_multiply_region_from_single(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + + uint32_t i; + uint32_t *s32; + uint32_t *d32; + + __m128i a, b; + __m128i result; + __m128i w; + __m128i g, q; + gf_internal_t * h = gf->scratch; + uint64_t g_star, q_plus; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + q_plus = *(uint64_t *) h->private; + g_star = *((uint64_t *) h->private + 1); + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + g = _mm_insert_epi64 (a, g_star, 0); + q = _mm_insert_epi64 (a, q_plus, 0); + s32 = (uint32_t *) src; + d32 = (uint32_t *) dest; + + if (xor) { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (q, _mm_srli_si128 (result, 4), 0); + w = _mm_clmulepi64_si128 (g, _mm_srli_si128 (w, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } else { + for (i = 0; i < bytes/sizeof(uint32_t); i++) { + b = _mm_insert_epi32 (a, s32[i], 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (q, _mm_srli_si128 (result, 4), 0); + w = _mm_clmulepi64_si128 (g, _mm_srli_si128 (w, 4), 0); + result = _mm_xor_si128 (result, w); + d32[i] = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + } + } +} +#endif + + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_32_t +gf_w32_clm_multiply_2 (gf_t *gf, gf_val_32_t a32, gf_val_32_t b32) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + + a = _mm_insert_epi32 (_mm_setzero_si128(), a32, 0); + b = _mm_insert_epi32 (a, b32, 0); + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + /* Ben: Do prim_poly reduction twice. We are guaranteed that we will only + have to do the reduction at most twice, because (w-2)/z == 2. Where + z is equal to the number of zeros after the leading 1 + + _mm_clmulepi64_si128 is the carryless multiply operation. Here + _mm_srli_si128 shifts the result to the right by 4 bytes. This allows + us to multiply the prim_poly by the leading bits of the result. We + then xor the result of that operation back with the result.*/ + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_32_t +gf_w32_clm_multiply_3 (gf_t *gf, gf_val_32_t a32, gf_val_32_t b32) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + + a = _mm_insert_epi32 (_mm_setzero_si128(), a32, 0); + b = _mm_insert_epi32 (a, b32, 0); + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_32_t +gf_w32_clm_multiply_4 (gf_t *gf, gf_val_32_t a32, gf_val_32_t b32) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + + a = _mm_insert_epi32 (_mm_setzero_si128(), a32, 0); + b = _mm_insert_epi32 (a, b32, 0); + + prim_poly = _mm_set_epi32(0, 0, 1, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 4), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + return rv; +} +#endif + + +static +inline +uint32_t +gf_w32_shift_multiply (gf_t *gf, uint32_t a32, uint32_t b32) +{ + uint64_t product, i, pp, a, b, one; + gf_internal_t *h; + + a = a32; + b = b32; + h = (gf_internal_t *) gf->scratch; + one = 1; + pp = h->prim_poly | (one << 32); + + product = 0; + + for (i = 0; i < GF_FIELD_WIDTH; i++) { + if (a & (one << i)) product ^= (b << i); + } + for (i = (GF_FIELD_WIDTH*2-2); i >= GF_FIELD_WIDTH; i--) { + if (product & (one << i)) product ^= (pp << (i-GF_FIELD_WIDTH)); + } + return product; +} + + static +int gf_w32_cfmgk_init(gf_t *gf) +{ + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_multiply_region_from_single) + +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + SET_FUNCTION(gf,multiply,w32,gf_w32_cfmgk_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_cfmgk_multiply_region_from_single) + + uint64_t *q_plus = (uint64_t *) h->private; + uint64_t *g_star = (uint64_t *) h->private + 1; + + uint64_t tmp = h->prim_poly << 32; + *q_plus = 1ULL << 32; + + int i; + for(i = 63; i >= 32; i--) + if((1ULL << i) & tmp) + { + *q_plus |= 1ULL << (i-32); + tmp ^= h->prim_poly << (i-32); + } + + *g_star = h->prim_poly & ((1ULL << 32) - 1); + + return 1; + } +#endif + + return 0; +} + + static +int gf_w32_cfm_init(gf_t *gf) +{ + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_multiply_region_from_single) + + /*Ben: We also check to see if the prim poly will work for pclmul */ + /*Ben: Check to see how many reduction steps it will take*/ + +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if ((0xfffe0000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_clm_multiply_region_from_single_2) + }else if ((0xffc00000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_3) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_clm_multiply_region_from_single_3) + }else if ((0xfe000000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_clm_multiply_region_from_single_4) + } else { + return 0; + } + return 1; + } + #endif + + return 0; +} + + static +int gf_w32_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_multiply_region_from_single) + SET_FUNCTION(gf,multiply,w32,gf_w32_shift_multiply) + return 1; +} + +static + void +gf_w32_group_set_shift_tables(uint32_t *shift, uint32_t val, gf_internal_t *h) +{ + uint32_t i; + uint32_t j; + + shift[0] = 0; + + for (i = 1; i < ((uint32_t)1 << h->arg1); i <<= 1) { + for (j = 0; j < i; j++) shift[i|j] = shift[j]^val; + if (val & GF_FIRST_BIT) { + val <<= 1; + val ^= h->prim_poly; + } else { + val <<= 1; + } + } +} + + static +void gf_w32_group_s_equals_r_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int leftover, rs; + uint32_t p, l, ind, a32; + int bits_left; + int g_s; + gf_region_data rd; + uint32_t *s32, *d32, *top; + struct gf_w32_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gd = (struct gf_w32_group_data *) h->private; + g_s = h->arg1; + gf_w32_group_set_shift_tables(gd->shift, val, h); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + leftover = 32 % g_s; + if (leftover == 0) leftover = g_s; + + while (d32 < top) { + rs = 32 - leftover; + a32 = *s32; + ind = a32 >> rs; + a32 <<= leftover; + p = gd->shift[ind]; + + bits_left = rs; + rs = 32 - g_s; + + while (bits_left > 0) { + bits_left -= g_s; + ind = a32 >> rs; + a32 <<= g_s; + l = p >> rs; + p = (gd->shift[ind] ^ gd->reduce[l] ^ (p << g_s)); + } + if (xor) p ^= *d32; + *d32 = p; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + + static +void gf_w32_group_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint32_t *s32, *d32, *top; + int i; + int leftover; + uint64_t p, l, r; + uint32_t a32, ind; + int g_s, g_r; + struct gf_w32_group_data *gd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + g_r = h->arg2; + gd = (struct gf_w32_group_data *) h->private; + gf_w32_group_set_shift_tables(gd->shift, val, h); + + leftover = GF_FIELD_WIDTH % g_s; + if (leftover == 0) leftover = g_s; + + gd = (struct gf_w32_group_data *) h->private; + gf_w32_group_set_shift_tables(gd->shift, val, h); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + while (d32 < top) { + a32 = *s32; + ind = a32 >> (GF_FIELD_WIDTH - leftover); + p = gd->shift[ind]; + p <<= g_s; + a32 <<= leftover; + + i = (GF_FIELD_WIDTH - leftover); + while (i > g_s) { + ind = a32 >> (GF_FIELD_WIDTH-g_s); + p ^= gd->shift[ind]; + a32 <<= g_s; + p <<= g_s; + i -= g_s; + } + + ind = a32 >> (GF_FIELD_WIDTH-g_s); + p ^= gd->shift[ind]; + + for (i = gd->tshift ; i >= 0; i -= g_r) { + l = p & (gd->rmask << i); + r = gd->reduce[l >> (i+32)]; + r <<= (i); + p ^= r; + } + + if (xor) p ^= *d32; + *d32 = p; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + +static +inline +gf_val_32_t +gf_w32_group_s_equals_r_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int leftover, rs; + uint32_t p, l, ind, a32; + int bits_left; + int g_s; + + struct gf_w32_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + + gd = (struct gf_w32_group_data *) h->private; + gf_w32_group_set_shift_tables(gd->shift, b, h); + + leftover = 32 % g_s; + if (leftover == 0) leftover = g_s; + + rs = 32 - leftover; + a32 = a; + ind = a32 >> rs; + a32 <<= leftover; + p = gd->shift[ind]; + + bits_left = rs; + rs = 32 - g_s; + + while (bits_left > 0) { + bits_left -= g_s; + ind = a32 >> rs; + a32 <<= g_s; + l = p >> rs; + p = (gd->shift[ind] ^ gd->reduce[l] ^ (p << g_s)); + } + return p; +} + +static +inline +gf_val_32_t +gf_w32_group_4_4_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t p, l, ind, a32; + + struct gf_w32_group_data *d44; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + d44 = (struct gf_w32_group_data *) h->private; + gf_w32_group_set_shift_tables(d44->shift, b, h); + + a32 = a; + ind = a32 >> 28; + a32 <<= 4; + p = d44->shift[ind]; + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + a32 <<= 4; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + ind = a32 >> 28; + l = p >> 28; + p = (d44->shift[ind] ^ d44->reduce[l] ^ (p << 4)); + return p; +} + +static +inline +gf_val_32_t +gf_w32_group_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int i; + int leftover; + uint64_t p, l, r; + uint32_t a32, ind; + int g_s, g_r; + struct gf_w32_group_data *gd; + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + g_r = h->arg2; + gd = (struct gf_w32_group_data *) h->private; + gf_w32_group_set_shift_tables(gd->shift, b, h); + + leftover = GF_FIELD_WIDTH % g_s; + if (leftover == 0) leftover = g_s; + + a32 = a; + ind = a32 >> (GF_FIELD_WIDTH - leftover); + p = gd->shift[ind]; + p <<= g_s; + a32 <<= leftover; + + i = (GF_FIELD_WIDTH - leftover); + while (i > g_s) { + ind = a32 >> (GF_FIELD_WIDTH-g_s); + p ^= gd->shift[ind]; + a32 <<= g_s; + p <<= g_s; + i -= g_s; + } + + ind = a32 >> (GF_FIELD_WIDTH-g_s); + p ^= gd->shift[ind]; + + for (i = gd->tshift ; i >= 0; i -= g_r) { + l = p & (gd->rmask << i); + r = gd->reduce[l >> (i+32)]; + r <<= (i); + p ^= r; + } + return p; +} + +static +inline +gf_val_32_t +gf_w32_bytwo_b_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = 0x80000000; + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static +inline +gf_val_32_t +gf_w32_bytwo_p_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + + prod = 0; + pmask = 0x80000000; + amask = 0x80000000; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + +static +void +gf_w32_bytwo_p_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, prod, amask; + gf_region_data rd; + struct gf_w32_bytwo_data *btd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w32_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x80000000; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x80000000; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +#define BYTWO_P_ONESTEP {\ + SSE_AB2(pp, m1 ,m2, prod, t1, t2); \ + t1 = _mm_and_si128(v, one); \ + t1 = _mm_sub_epi32(t1, one); \ + t1 = _mm_and_si128(t1, ta); \ + prod = _mm_xor_si128(prod, t1); \ + v = _mm_srli_epi64(v, 1); } + +#ifdef INTEL_SSE2 +static +void +gf_w32_bytwo_p_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + uint32_t vrev; + __m128i pp, m1, m2, ta, prod, t1, t2, tp, one, v; + struct gf_w32_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w32_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + vrev = 0; + for (i = 0; i < 32; i++) { + vrev <<= 1; + if (!(val & ((gf_val_32_t)1 << i))) vrev |= 1; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi32(btd->prim_poly&0xffffffff); + m1 = _mm_set1_epi32((btd->mask1)&0xffffffff); + m2 = _mm_set1_epi32((btd->mask2)&0xffffffff); + one = _mm_set1_epi32(1); + + while (d8 < (uint8_t *) rd.d_top) { + prod = _mm_setzero_si128(); + v = _mm_set1_epi32(vrev); + ta = _mm_load_si128((__m128i *) s8); + tp = (!xor) ? _mm_setzero_si128() : _mm_load_si128((__m128i *) d8); + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + _mm_store_si128((__m128i *) d8, _mm_xor_si128(prod, tp)); + d8 += 16; + s8 += 16; + } + gf_do_final_region_alignment(&rd); +} +#endif + +static +void +gf_w32_bytwo_b_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, tb, prod; + struct gf_w32_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w32_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + switch (val) { + case 2: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 3: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 4: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 5: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + default: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + prod = *d64 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + prod = 0 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } + break; + } + gf_do_final_region_alignment(&rd); +} + +#ifdef INTEL_SSE2 +static +void +gf_w32_bytwo_b_sse_region_2_noxor(gf_region_data *rd, struct gf_w32_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi32(btd->prim_poly&0xffffffff); + m1 = _mm_set1_epi32((btd->mask1)&0xffffffff); + m2 = _mm_set1_epi32((btd->mask2)&0xffffffff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w32_bytwo_b_sse_region_2_xor(gf_region_data *rd, struct gf_w32_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi32(btd->prim_poly&0xffffffff); + m1 = _mm_set1_epi32((btd->mask1)&0xffffffff); + m2 = _mm_set1_epi32((btd->mask2)&0xffffffff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + + +#ifdef INTEL_SSE2 +static +void +gf_w32_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint32_t itb; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + struct gf_w32_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w32_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + if (val == 2) { + if (xor) { + gf_w32_bytwo_b_sse_region_2_xor(&rd, btd); + } else { + gf_w32_bytwo_b_sse_region_2_noxor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi32(btd->prim_poly&0xffffffff); + m1 = _mm_set1_epi32((btd->mask1)&0xffffffff); + m2 = _mm_set1_epi32((btd->mask2)&0xffffffff); + + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = (!xor) ? _mm_setzero_si128() : _mm_load_si128 ((__m128i *)(d8)); + itb = val; + while (1) { + if (itb & 1) vb = _mm_xor_si128(vb, va); + itb >>= 1; + if (itb == 0) break; + SSE_AB2(pp, m1, m2, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + + gf_do_final_region_alignment(&rd); +} +#endif + +static +int gf_w32_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + uint64_t ip, m1, m2; + struct gf_w32_bytwo_data *btd; + + h = (gf_internal_t *) gf->scratch; + btd = (struct gf_w32_bytwo_data *) (h->private); + ip = h->prim_poly & 0xffffffff; + m1 = 0xfffffffe; + m2 = 0x80000000; + btd->prim_poly = 0; + btd->mask1 = 0; + btd->mask2 = 0; + + while (ip != 0) { + btd->prim_poly |= ip; + btd->mask1 |= m1; + btd->mask2 |= m2; + ip <<= GF_FIELD_WIDTH; + m1 <<= GF_FIELD_WIDTH; + m2 <<= GF_FIELD_WIDTH; + } + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w32,gf_w32_bytwo_p_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_bytwo_p_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w32_bytwo_p_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } else { + SET_FUNCTION(gf,multiply,w32,gf_w32_bytwo_b_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_bytwo_b_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w32_bytwo_b_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } + + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + return 1; +} + +static +inline +uint32_t +gf_w32_split_8_8_multiply (gf_t *gf, uint32_t a32, uint32_t b32) +{ + uint32_t product, i, j, mask, tb; + gf_internal_t *h; + struct gf_w32_split_8_8_data *d8; + + h = (gf_internal_t *) gf->scratch; + d8 = (struct gf_w32_split_8_8_data *) h->private; + product = 0; + mask = 0xff; + + for (i = 0; i < 4; i++) { + tb = b32; + for (j = 0; j < 4; j++) { + product ^= d8->tables[i+j][a32&mask][tb&mask]; + tb >>= 8; + } + a32 >>= 8; + } + return product; +} + +static +inline +void +gf_w32_split_8_32_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + uint32_t *s32, *d32, *top, p, a, v; + struct gf_split_8_32_lazy_data *d8; + struct gf_w32_split_8_8_data *d88; + uint32_t *t[4]; + int i, j, k, change; + uint32_t pp; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + if (h->arg1 == 32 || h->arg2 == 32 || h->mult_type == GF_MULT_DEFAULT) { + d8 = (struct gf_split_8_32_lazy_data *) h->private; + for (i = 0; i < 4; i++) t[i] = d8->tables[i]; + change = (val != d8->last_value); + if (change) d8->last_value = val; + } else { + d88 = (struct gf_w32_split_8_8_data *) h->private; + for (i = 0; i < 4; i++) t[i] = d88->region_tables[i]; + change = (val != d88->last_value); + if (change) d88->last_value = val; + } + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + if (change) { + v = val; + for (i = 0; i < 4; i++) { + t[i][0] = 0; + for (j = 1; j < 256; j <<= 1) { + for (k = 0; k < j; k++) { + t[i][k^j] = (v ^ t[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + + while (d32 < top) { + p = (xor) ? *d32 : 0; + a = *s32; + i = 0; + while (a != 0) { + v = (a & 0xff); + p ^= t[i][v]; + a >>= 8; + i++; + } + *d32 = p; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + +static +inline +void +gf_w32_split_16_32_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + uint32_t *s32, *d32, *top, p, a, v; + struct gf_split_16_32_lazy_data *d16; + uint32_t *t[2]; + int i, j, k, change; + uint32_t pp; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + d16 = (struct gf_split_16_32_lazy_data *) h->private; + for (i = 0; i < 2; i++) t[i] = d16->tables[i]; + change = (val != d16->last_value); + if (change) d16->last_value = val; + + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + if (change) { + v = val; + for (i = 0; i < 2; i++) { + t[i][0] = 0; + for (j = 1; j < (1 << 16); j <<= 1) { + for (k = 0; k < j; k++) { + t[i][k^j] = (v ^ t[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + + while (d32 < top) { + p = (xor) ? *d32 : 0; + a = *s32; + i = 0; + while (a != 0 && i < 2) { + v = (a & 0xffff); + p ^= t[i][v]; + a >>= 16; + i++; + } + *d32 = p; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + +static +void +gf_w32_split_2_32_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + struct gf_split_2_32_lazy_data *ld; + int i; + uint32_t pp, v, v2, s, *s32, *d32, *top; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + ld = (struct gf_split_2_32_lazy_data *) h->private; + + if (ld->last_value != val) { + v = val; + for (i = 0; i < 16; i++) { + v2 = (v << 1); + if (v & GF_FIRST_BIT) v2 ^= pp; + ld->tables[i][0] = 0; + ld->tables[i][1] = v; + ld->tables[i][2] = v2; + ld->tables[i][3] = (v2 ^ v); + v = (v2 << 1); + if (v2 & GF_FIRST_BIT) v ^= pp; + } + } + ld->last_value = val; + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + while (d32 != top) { + v = (xor) ? *d32 : 0; + s = *s32; + i = 0; + while (s != 0) { + v ^= ld->tables[i][s&3]; + s >>= 2; + i++; + } + *d32 = v; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + +#ifdef INTEL_SSSE3 +static +void +gf_w32_split_2_32_lazy_sse_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, tindex; + uint32_t pp, v, v2, *s32, *d32, *top; + __m128i vi, si, pi, shuffler, tables[16], adder, xi, mask1, mask2; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + v = val; + for (i = 0; i < 16; i++) { + v2 = (v << 1); + if (v & GF_FIRST_BIT) v2 ^= pp; + tables[i] = _mm_set_epi32(v2 ^ v, v2, v, 0); + v = (v2 << 1); + if (v2 & GF_FIRST_BIT) v ^= pp; + } + + shuffler = _mm_set_epi8(0xc, 0xc, 0xc, 0xc, 8, 8, 8, 8, 4, 4, 4, 4, 0, 0, 0, 0); + adder = _mm_set_epi8(3, 2, 1, 0, 3, 2, 1, 0, 3, 2, 1, 0, 3, 2, 1, 0); + mask1 = _mm_set1_epi8(0x3); + mask2 = _mm_set1_epi8(0xc); + + while (d32 != top) { + pi = (xor) ? _mm_load_si128 ((__m128i *) d32) : _mm_setzero_si128(); + vi = _mm_load_si128((__m128i *) s32); + + tindex = 0; + for (i = 0; i < 4; i++) { + si = _mm_shuffle_epi8(vi, shuffler); + + xi = _mm_and_si128(si, mask1); + xi = _mm_slli_epi16(xi, 2); + xi = _mm_xor_si128(xi, adder); + pi = _mm_xor_si128(pi, _mm_shuffle_epi8(tables[tindex], xi)); + tindex++; + + xi = _mm_and_si128(si, mask2); + xi = _mm_xor_si128(xi, adder); + pi = _mm_xor_si128(pi, _mm_shuffle_epi8(tables[tindex], xi)); + si = _mm_srli_epi16(si, 2); + tindex++; + + xi = _mm_and_si128(si, mask2); + xi = _mm_xor_si128(xi, adder); + pi = _mm_xor_si128(pi, _mm_shuffle_epi8(tables[tindex], xi)); + si = _mm_srli_epi16(si, 2); + tindex++; + + xi = _mm_and_si128(si, mask2); + xi = _mm_xor_si128(xi, adder); + pi = _mm_xor_si128(pi, _mm_shuffle_epi8(tables[tindex], xi)); + tindex++; + + vi = _mm_srli_epi32(vi, 8); + } + _mm_store_si128((__m128i *) d32, pi); + d32 += 4; + s32 += 4; + } + + gf_do_final_region_alignment(&rd); + +} +#endif + +static +void +gf_w32_split_4_32_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + struct gf_split_4_32_lazy_data *ld; + int i, j, k; + uint32_t pp, v, s, *s32, *d32, *top; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + ld = (struct gf_split_4_32_lazy_data *) h->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + if (ld->last_value != val) { + v = val; + for (i = 0; i < 8; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + ld->last_value = val; + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + while (d32 != top) { + v = (xor) ? *d32 : 0; + s = *s32; + i = 0; + while (s != 0) { + v ^= ld->tables[i][s&0xf]; + s >>= 4; + i++; + } + *d32 = v; + d32++; + s32++; + } + gf_do_final_region_alignment(&rd); +} + +#ifdef INTEL_SSSE3 +static +void +gf_w32_split_4_32_lazy_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint32_t pp, v, *s32, *d32, *top; + __m128i si, tables[8][4], p0, p1, p2, p3, mask1, v0, v1, v2, v3; + struct gf_split_4_32_lazy_data *ld; + uint8_t btable[16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 64); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + ld = (struct gf_split_4_32_lazy_data *) h->private; + + v = val; + for (i = 0; i < 8; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + for (j = 0; j < 4; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[i][k]; + ld->tables[i][k] >>= 8; + } + tables[i][j] = _mm_loadu_si128((__m128i *) btable); + } + } + + mask1 = _mm_set1_epi8(0xf); + + if (xor) { + while (d32 != top) { + p0 = _mm_load_si128 ((__m128i *) d32); + p1 = _mm_load_si128 ((__m128i *) (d32+4)); + p2 = _mm_load_si128 ((__m128i *) (d32+8)); + p3 = _mm_load_si128 ((__m128i *) (d32+12)); + + v0 = _mm_load_si128((__m128i *) s32); s32 += 4; + v1 = _mm_load_si128((__m128i *) s32); s32 += 4; + v2 = _mm_load_si128((__m128i *) s32); s32 += 4; + v3 = _mm_load_si128((__m128i *) s32); s32 += 4; + + si = _mm_and_si128(v0, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[0][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[0][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[0][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[0][3], si)); + + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[1][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[1][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[1][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[1][3], si)); + + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[2][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[2][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[2][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[2][3], si)); + + v1 = _mm_srli_epi32(v1, 4); + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[3][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[3][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[3][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[3][3], si)); + + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[4][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[4][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[4][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[4][3], si)); + + v2 = _mm_srli_epi32(v2, 4); + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[5][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[5][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[5][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[5][3], si)); + + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[6][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[6][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[6][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[6][3], si)); + + v3 = _mm_srli_epi32(v3, 4); + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[7][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[7][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[7][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[7][3], si)); + + _mm_store_si128((__m128i *) d32, p0); + _mm_store_si128((__m128i *) (d32+4), p1); + _mm_store_si128((__m128i *) (d32+8), p2); + _mm_store_si128((__m128i *) (d32+12), p3); + d32 += 16; + } + } else { + while (d32 != top) { + + v0 = _mm_load_si128((__m128i *) s32); s32 += 4; + v1 = _mm_load_si128((__m128i *) s32); s32 += 4; + v2 = _mm_load_si128((__m128i *) s32); s32 += 4; + v3 = _mm_load_si128((__m128i *) s32); s32 += 4; + + si = _mm_and_si128(v0, mask1); + p0 = _mm_shuffle_epi8(tables[0][0], si); + p1 = _mm_shuffle_epi8(tables[0][1], si); + p2 = _mm_shuffle_epi8(tables[0][2], si); + p3 = _mm_shuffle_epi8(tables[0][3], si); + + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[1][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[1][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[1][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[1][3], si)); + + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[2][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[2][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[2][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[2][3], si)); + + v1 = _mm_srli_epi32(v1, 4); + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[3][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[3][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[3][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[3][3], si)); + + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[4][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[4][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[4][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[4][3], si)); + + v2 = _mm_srli_epi32(v2, 4); + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[5][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[5][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[5][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[5][3], si)); + + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[6][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[6][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[6][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[6][3], si)); + + v3 = _mm_srli_epi32(v3, 4); + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[7][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[7][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[7][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[7][3], si)); + + _mm_store_si128((__m128i *) d32, p0); + _mm_store_si128((__m128i *) (d32+4), p1); + _mm_store_si128((__m128i *) (d32+8), p2); + _mm_store_si128((__m128i *) (d32+12), p3); + d32 += 16; + } + } + + gf_do_final_region_alignment(&rd); +} +#endif + + +#ifdef INTEL_SSSE3 +static +void +gf_w32_split_4_32_lazy_sse_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint32_t pp, v, *s32, *d32, *top, tmp_table[16]; + __m128i si, tables[8][4], p0, p1, p2, p3, mask1, v0, v1, v2, v3, mask8; + __m128i tv1, tv2, tv3, tv0; + uint8_t btable[16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 64); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + v = val; + for (i = 0; i < 8; i++) { + tmp_table[0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + tmp_table[k^j] = (v ^ tmp_table[k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + for (j = 0; j < 4; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) tmp_table[k]; + tmp_table[k] >>= 8; + } + tables[i][j] = _mm_loadu_si128((__m128i *) btable); + } + } + + mask1 = _mm_set1_epi8(0xf); + mask8 = _mm_set1_epi16(0xff); + + if (xor) { + while (d32 != top) { + v0 = _mm_load_si128((__m128i *) s32); s32 += 4; + v1 = _mm_load_si128((__m128i *) s32); s32 += 4; + v2 = _mm_load_si128((__m128i *) s32); s32 += 4; + v3 = _mm_load_si128((__m128i *) s32); s32 += 4; + + p0 = _mm_srli_epi16(v0, 8); + p1 = _mm_srli_epi16(v1, 8); + p2 = _mm_srli_epi16(v2, 8); + p3 = _mm_srli_epi16(v3, 8); + + tv0 = _mm_and_si128(v0, mask8); + tv1 = _mm_and_si128(v1, mask8); + tv2 = _mm_and_si128(v2, mask8); + tv3 = _mm_and_si128(v3, mask8); + + v0 = _mm_packus_epi16(p1, p0); + v1 = _mm_packus_epi16(tv1, tv0); + v2 = _mm_packus_epi16(p3, p2); + v3 = _mm_packus_epi16(tv3, tv2); + + p0 = _mm_srli_epi16(v0, 8); + p1 = _mm_srli_epi16(v1, 8); + p2 = _mm_srli_epi16(v2, 8); + p3 = _mm_srli_epi16(v3, 8); + + tv0 = _mm_and_si128(v0, mask8); + tv1 = _mm_and_si128(v1, mask8); + tv2 = _mm_and_si128(v2, mask8); + tv3 = _mm_and_si128(v3, mask8); + + v0 = _mm_packus_epi16(p2, p0); + v1 = _mm_packus_epi16(p3, p1); + v2 = _mm_packus_epi16(tv2, tv0); + v3 = _mm_packus_epi16(tv3, tv1); + + si = _mm_and_si128(v0, mask1); + p0 = _mm_shuffle_epi8(tables[6][0], si); + p1 = _mm_shuffle_epi8(tables[6][1], si); + p2 = _mm_shuffle_epi8(tables[6][2], si); + p3 = _mm_shuffle_epi8(tables[6][3], si); + + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[7][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[7][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[7][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[7][3], si)); + + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[4][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[4][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[4][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[4][3], si)); + + v1 = _mm_srli_epi32(v1, 4); + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[5][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[5][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[5][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[5][3], si)); + + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[2][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[2][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[2][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[2][3], si)); + + v2 = _mm_srli_epi32(v2, 4); + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[3][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[3][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[3][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[3][3], si)); + + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[0][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[0][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[0][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[0][3], si)); + + v3 = _mm_srli_epi32(v3, 4); + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[1][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[1][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[1][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[1][3], si)); + + tv0 = _mm_unpackhi_epi8(p1, p3); + tv1 = _mm_unpackhi_epi8(p0, p2); + tv2 = _mm_unpacklo_epi8(p1, p3); + tv3 = _mm_unpacklo_epi8(p0, p2); + + p0 = _mm_unpackhi_epi8(tv1, tv0); + p1 = _mm_unpacklo_epi8(tv1, tv0); + p2 = _mm_unpackhi_epi8(tv3, tv2); + p3 = _mm_unpacklo_epi8(tv3, tv2); + + v0 = _mm_load_si128 ((__m128i *) d32); + v1 = _mm_load_si128 ((__m128i *) (d32+4)); + v2 = _mm_load_si128 ((__m128i *) (d32+8)); + v3 = _mm_load_si128 ((__m128i *) (d32+12)); + + p0 = _mm_xor_si128(p0, v0); + p1 = _mm_xor_si128(p1, v1); + p2 = _mm_xor_si128(p2, v2); + p3 = _mm_xor_si128(p3, v3); + + _mm_store_si128((__m128i *) d32, p0); + _mm_store_si128((__m128i *) (d32+4), p1); + _mm_store_si128((__m128i *) (d32+8), p2); + _mm_store_si128((__m128i *) (d32+12), p3); + d32 += 16; + } + } else { + while (d32 != top) { + v0 = _mm_load_si128((__m128i *) s32); s32 += 4; + v1 = _mm_load_si128((__m128i *) s32); s32 += 4; + v2 = _mm_load_si128((__m128i *) s32); s32 += 4; + v3 = _mm_load_si128((__m128i *) s32); s32 += 4; + + p0 = _mm_srli_epi16(v0, 8); + p1 = _mm_srli_epi16(v1, 8); + p2 = _mm_srli_epi16(v2, 8); + p3 = _mm_srli_epi16(v3, 8); + + tv0 = _mm_and_si128(v0, mask8); + tv1 = _mm_and_si128(v1, mask8); + tv2 = _mm_and_si128(v2, mask8); + tv3 = _mm_and_si128(v3, mask8); + + v0 = _mm_packus_epi16(p1, p0); + v1 = _mm_packus_epi16(tv1, tv0); + v2 = _mm_packus_epi16(p3, p2); + v3 = _mm_packus_epi16(tv3, tv2); + + p0 = _mm_srli_epi16(v0, 8); + p1 = _mm_srli_epi16(v1, 8); + p2 = _mm_srli_epi16(v2, 8); + p3 = _mm_srli_epi16(v3, 8); + + tv0 = _mm_and_si128(v0, mask8); + tv1 = _mm_and_si128(v1, mask8); + tv2 = _mm_and_si128(v2, mask8); + tv3 = _mm_and_si128(v3, mask8); + + v0 = _mm_packus_epi16(p2, p0); + v1 = _mm_packus_epi16(p3, p1); + v2 = _mm_packus_epi16(tv2, tv0); + v3 = _mm_packus_epi16(tv3, tv1); + + si = _mm_and_si128(v0, mask1); + p0 = _mm_shuffle_epi8(tables[6][0], si); + p1 = _mm_shuffle_epi8(tables[6][1], si); + p2 = _mm_shuffle_epi8(tables[6][2], si); + p3 = _mm_shuffle_epi8(tables[6][3], si); + + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[7][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[7][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[7][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[7][3], si)); + + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[4][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[4][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[4][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[4][3], si)); + + v1 = _mm_srli_epi32(v1, 4); + si = _mm_and_si128(v1, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[5][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[5][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[5][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[5][3], si)); + + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[2][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[2][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[2][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[2][3], si)); + + v2 = _mm_srli_epi32(v2, 4); + si = _mm_and_si128(v2, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[3][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[3][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[3][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[3][3], si)); + + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[0][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[0][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[0][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[0][3], si)); + + v3 = _mm_srli_epi32(v3, 4); + si = _mm_and_si128(v3, mask1); + p0 = _mm_xor_si128(p0, _mm_shuffle_epi8(tables[1][0], si)); + p1 = _mm_xor_si128(p1, _mm_shuffle_epi8(tables[1][1], si)); + p2 = _mm_xor_si128(p2, _mm_shuffle_epi8(tables[1][2], si)); + p3 = _mm_xor_si128(p3, _mm_shuffle_epi8(tables[1][3], si)); + + tv0 = _mm_unpackhi_epi8(p1, p3); + tv1 = _mm_unpackhi_epi8(p0, p2); + tv2 = _mm_unpacklo_epi8(p1, p3); + tv3 = _mm_unpacklo_epi8(p0, p2); + + p0 = _mm_unpackhi_epi8(tv1, tv0); + p1 = _mm_unpacklo_epi8(tv1, tv0); + p2 = _mm_unpackhi_epi8(tv3, tv2); + p3 = _mm_unpacklo_epi8(tv3, tv2); + + _mm_store_si128((__m128i *) d32, p0); + _mm_store_si128((__m128i *) (d32+4), p1); + _mm_store_si128((__m128i *) (d32+8), p2); + _mm_store_si128((__m128i *) (d32+12), p3); + d32 += 16; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +static +int gf_w32_split_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_split_2_32_lazy_data *ld2; + struct gf_split_4_32_lazy_data *ld4; + struct gf_w32_split_8_8_data *d8; + struct gf_split_8_32_lazy_data *d32; + struct gf_split_16_32_lazy_data *d16; + uint32_t p, basep; + int i, j, exp; + + h = (gf_internal_t *) gf->scratch; + + /* Defaults */ + + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + + /* JSP: First handle single multiplication: + If args == 8, then we're doing split 8 8. + Otherwise, if PCLMUL, we use that. + Otherwise, we use bytwo_p. + */ + + if (h->arg1 == 8 && h->arg2 == 8) { + SET_FUNCTION(gf,multiply,w32,gf_w32_split_8_8_multiply) +#if defined(INTEL_SSE4_PCLMUL) + } else if (gf_cpu_supports_intel_pclmul) { + if ((0xfffe0000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_2) + } else if ((0xffc00000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_3) + } else if ((0xfe000000 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w32_clm_multiply_4) + } +#endif + } else { + SET_FUNCTION(gf,multiply,w32,gf_w32_bytwo_p_multiply) + } + + /* Easy cases: 16/32 and 2/32 */ + + if ((h->arg1 == 16 && h->arg2 == 32) || (h->arg1 == 32 && h->arg2 == 16)) { + d16 = (struct gf_split_16_32_lazy_data *) h->private; + d16->last_value = 0; + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_16_32_lazy_multiply_region) + return 1; + } + + if ((h->arg1 == 2 && h->arg2 == 32) || (h->arg1 == 32 && h->arg2 == 2)) { + ld2 = (struct gf_split_2_32_lazy_data *) h->private; + ld2->last_value = 0; + #ifdef INTEL_SSSE3 + if (gf_cpu_supports_intel_ssse3 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_2_32_lazy_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_2_32_lazy_multiply_region) + if(h->region_type & GF_REGION_SIMD) return 0; + #ifdef INTEL_SSSE3 + } + #endif + return 1; + } + + /* 4/32 or Default + SSE - There is no ALTMAP/NOSSE. */ + + + if ((h->arg1 == 4 && h->arg2 == 32) || (h->arg1 == 32 && h->arg2 == 4) || + ((gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon) && h->mult_type == GF_REGION_DEFAULT)) { + ld4 = (struct gf_split_4_32_lazy_data *) h->private; + ld4->last_value = 0; + if ((h->region_type & GF_REGION_NOSIMD) || !(gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_4_32_lazy_multiply_region) + } else if (gf_cpu_supports_arm_neon) { +#ifdef ARM_NEON + gf_w32_neon_split_init(gf); +#endif + } else if (h->region_type & GF_REGION_ALTMAP) { +#ifdef INTEL_SSSE3 + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_4_32_lazy_sse_altmap_multiply_region) +#endif + } else { +#ifdef INTEL_SSSE3 + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_4_32_lazy_sse_multiply_region) +#endif + } + return 1; + } + + /* 8/32 or Default + no SSE */ + + if ((h->arg1 == 8 && h->arg2 == 32) || (h->arg1 == 32 && h->arg2 == 8) || + h->mult_type == GF_MULT_DEFAULT) { + d32 = (struct gf_split_8_32_lazy_data *) h->private; + d32->last_value = 0; + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_8_32_lazy_multiply_region) + return 1; + } + + /* Finally, if args == 8, then we have to set up the tables here. */ + + if (h->arg1 == 8 && h->arg2 == 8) { + d8 = (struct gf_w32_split_8_8_data *) h->private; + d8->last_value = 0; + SET_FUNCTION(gf,multiply,w32,gf_w32_split_8_8_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_8_32_lazy_multiply_region) + basep = 1; + for (exp = 0; exp < 7; exp++) { + for (j = 0; j < 256; j++) d8->tables[exp][0][j] = 0; + for (i = 0; i < 256; i++) d8->tables[exp][i][0] = 0; + d8->tables[exp][1][1] = basep; + for (i = 2; i < 256; i++) { + if (i&1) { + p = d8->tables[exp][i^1][1]; + d8->tables[exp][i][1] = p ^ basep; + } else { + p = d8->tables[exp][i>>1][1]; + d8->tables[exp][i][1] = GF_MULTBY_TWO(p); + } + } + for (i = 1; i < 256; i++) { + p = d8->tables[exp][i][1]; + for (j = 1; j < 256; j++) { + if (j&1) { + d8->tables[exp][i][j] = d8->tables[exp][i][j^1] ^ p; + } else { + d8->tables[exp][i][j] = GF_MULTBY_TWO(d8->tables[exp][i][j>>1]); + } + } + } + for (i = 0; i < 8; i++) basep = GF_MULTBY_TWO(basep); + } + return 1; + } + + /* If we get here, then the arguments were bad. */ + + return 0; +} + +static +int gf_w32_group_init(gf_t *gf) +{ + uint32_t i, j, p, index; + struct gf_w32_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint32_t g_r, g_s; + + g_s = h->arg1; + g_r = h->arg2; + + gd = (struct gf_w32_group_data *) h->private; + gd->shift = (uint32_t *) (&(gd->memory)); + gd->reduce = gd->shift + (1 << g_s); + + gd->rmask = (1 << g_r) - 1; + gd->rmask <<= 32; + + gd->tshift = 32 % g_s; + if (gd->tshift == 0) gd->tshift = g_s; + gd->tshift = (32 - gd->tshift); + gd->tshift = ((gd->tshift-1)/g_r) * g_r; + + gd->reduce[0] = 0; + for (i = 0; i < ((uint32_t)1 << g_r); i++) { + p = 0; + index = 0; + for (j = 0; j < g_r; j++) { + if (i & (1 << j)) { + p ^= (h->prim_poly << j); + index ^= (1 << j); + index ^= (h->prim_poly >> (32-j)); + } + } + gd->reduce[index] = p; + } + + if (g_s == g_r) { + SET_FUNCTION(gf,multiply,w32,gf_w32_group_s_equals_r_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_group_s_equals_r_multiply_region) + } else { + SET_FUNCTION(gf,multiply,w32,gf_w32_group_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_group_multiply_region) + } + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + + return 1; +} + + +static +uint32_t +gf_w32_composite_multiply_recursive(gf_t *gf, uint32_t a, uint32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint32_t b0 = b & 0x0000ffff; + uint32_t b1 = (b & 0xffff0000) >> 16; + uint32_t a0 = a & 0x0000ffff; + uint32_t a1 = (a & 0xffff0000) >> 16; + uint32_t a1b1; + uint32_t rv; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + rv = ((base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 16) | (base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1); + return rv; +} + +/* JSP: This could be made faster. Someday, when I'm bored. */ + +static +uint32_t +gf_w32_composite_multiply_inline(gf_t *gf, uint32_t a, uint32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint32_t b0 = b & 0x0000ffff; + uint32_t b1 = b >> 16; + uint32_t a0 = a & 0x0000ffff; + uint32_t a1 = a >> 16; + uint32_t a1b1, prod; + uint16_t *log, *alog; + struct gf_w32_composite_data *cd; + + cd = (struct gf_w32_composite_data *) h->private; + log = cd->log; + alog = cd->alog; + + a1b1 = GF_W16_INLINE_MULT(log, alog, a1, b1); + prod = GF_W16_INLINE_MULT(log, alog, a1, b0); + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b1); + prod ^= GF_W16_INLINE_MULT(log, alog, a1b1, h->prim_poly); + prod <<= 16; + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b0); + prod ^= a1b1; + return prod; +} + +/* + * Composite field division trick (explained in 2007 tech report) + * + * Compute a / b = a*b^-1, where p(x) = x^2 + sx + 1 + * + * let c = b^-1 + * + * c*b = (s*b1c1+b1c0+b0c1)x+(b1c1+b0c0) + * + * want (s*b1c1+b1c0+b0c1) = 0 and (b1c1+b0c0) = 1 + * + * let d = b1c1 and d+1 = b0c0 + * + * solve s*b1c1+b1c0+b0c1 = 0 + * + * solution: d = (b1b0^-1)(b1b0^-1+b0b1^-1+s)^-1 + * + * c0 = (d+1)b0^-1 + * c1 = d*b1^-1 + * + * a / b = a * c + */ + +static +uint32_t +gf_w32_composite_inverse(gf_t *gf, uint32_t a) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint16_t a0 = a & 0x0000ffff; + uint16_t a1 = (a & 0xffff0000) >> 16; + uint16_t c0, c1, d, tmp; + uint32_t c; + uint16_t a0inv, a1inv; + + if (a0 == 0) { + a1inv = base_gf->inverse.w32(base_gf, a1); + c0 = base_gf->multiply.w32(base_gf, a1inv, h->prim_poly); + c1 = a1inv; + } else if (a1 == 0) { + c0 = base_gf->inverse.w32(base_gf, a0); + c1 = 0; + } else { + a1inv = base_gf->inverse.w32(base_gf, a1); + a0inv = base_gf->inverse.w32(base_gf, a0); + + d = base_gf->multiply.w32(base_gf, a1, a0inv); + + tmp = (base_gf->multiply.w32(base_gf, a1, a0inv) ^ base_gf->multiply.w32(base_gf, a0, a1inv) ^ h->prim_poly); + tmp = base_gf->inverse.w32(base_gf, tmp); + + d = base_gf->multiply.w32(base_gf, d, tmp); + + c0 = base_gf->multiply.w32(base_gf, (d^1), a0inv); + c1 = base_gf->multiply.w32(base_gf, d, a1inv); + } + + c = c0 | (c1 << 16); + + return c; +} + +static +void +gf_w32_composite_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint32_t b0 = val & 0x0000ffff; + uint32_t b1 = (val & 0xffff0000) >> 16; + uint32_t *s32, *d32, *top; + uint16_t a0, a1, a1b1, *log, *alog; + uint32_t prod; + gf_region_data rd; + struct gf_w32_composite_data *cd; + + cd = (struct gf_w32_composite_data *) h->private; + log = cd->log; + alog = cd->alog; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + + s32 = rd.s_start; + d32 = rd.d_start; + top = rd.d_top; + + if (log == NULL) { + if (xor) { + while (d32 < top) { + a0 = *s32 & 0x0000ffff; + a1 = (*s32 & 0xffff0000) >> 16; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d32 ^= ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 16)); + s32++; + d32++; + } + } else { + while (d32 < top) { + a0 = *s32 & 0x0000ffff; + a1 = (*s32 & 0xffff0000) >> 16; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d32 = ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 16)); + s32++; + d32++; + } + } + } else { + if (xor) { + while (d32 < top) { + a0 = *s32 & 0x0000ffff; + a1 = (*s32 & 0xffff0000) >> 16; + a1b1 = GF_W16_INLINE_MULT(log, alog, a1, b1); + + prod = GF_W16_INLINE_MULT(log, alog, a1, b0); + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b1); + prod ^= GF_W16_INLINE_MULT(log, alog, a1b1, h->prim_poly); + prod <<= 16; + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b0); + prod ^= a1b1; + *d32 ^= prod; + s32++; + d32++; + } + } else { + while (d32 < top) { + a0 = *s32 & 0x0000ffff; + a1 = (*s32 & 0xffff0000) >> 16; + a1b1 = GF_W16_INLINE_MULT(log, alog, a1, b1); + + prod = GF_W16_INLINE_MULT(log, alog, a1, b0); + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b1); + prod ^= GF_W16_INLINE_MULT(log, alog, a1b1, h->prim_poly); + prod <<= 16; + prod ^= GF_W16_INLINE_MULT(log, alog, a0, b0); + prod ^= a1b1; + + *d32 = prod; + s32++; + d32++; + } + } + } +} + +static +void +gf_w32_composite_multiply_region_alt(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint16_t val0 = val & 0x0000ffff; + uint16_t val1 = (val & 0xffff0000) >> 16; + gf_region_data rd; + int sub_reg_size; + uint8_t *slow, *shigh; + uint8_t *dlow, *dhigh, *top; + + /* JSP: I want the two pointers aligned wrt each other on 16 byte + boundaries. So I'm going to make sure that the area on + which the two operate is a multiple of 32. Of course, that + junks up the mapping, but so be it -- that's why we have extract_word.... */ + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + slow = (uint8_t *) rd.s_start; + dlow = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_reg_size = (top - dlow)/2; + shigh = slow + sub_reg_size; + dhigh = dlow + sub_reg_size; + + base_gf->multiply_region.w32(base_gf, slow, dlow, val0, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dlow, val1, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, slow, dhigh, val1, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, val0, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, base_gf->multiply.w32(base_gf, h->prim_poly, val1), sub_reg_size, 1); + + gf_do_final_region_alignment(&rd); +} + +static +int gf_w32_composite_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + struct gf_w32_composite_data *cd; + + if (h->base_gf == NULL) return 0; + + cd = (struct gf_w32_composite_data *) h->private; + cd->log = gf_w16_get_log_table(h->base_gf); + cd->alog = gf_w16_get_mult_alog_table(h->base_gf); + + if (h->region_type & GF_REGION_ALTMAP) { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_composite_multiply_region_alt) + } else { + SET_FUNCTION(gf,multiply_region,w32,gf_w32_composite_multiply_region) + } + + if (cd->log == NULL) { + SET_FUNCTION(gf,multiply,w32,gf_w32_composite_multiply_recursive) + } else { + SET_FUNCTION(gf,multiply,w32,gf_w32_composite_multiply_inline) + } + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,gf_w32_composite_inverse) + + return 1; +} + + + +int gf_w32_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + switch(mult_type) + { + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t) + sizeof(struct gf_w32_bytwo_data) + 64; + break; + case GF_MULT_GROUP: + return sizeof(gf_internal_t) + sizeof(struct gf_w32_group_data) + + sizeof(uint32_t) * (1 << arg1) + + sizeof(uint32_t) * (1 << arg2) + 64; + break; + case GF_MULT_DEFAULT: + + case GF_MULT_SPLIT_TABLE: + if (arg1 == 8 && arg2 == 8){ + return sizeof(gf_internal_t) + sizeof(struct gf_w32_split_8_8_data) + 64; + } + if ((arg1 == 16 && arg2 == 32) || (arg2 == 16 && arg1 == 32)) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_16_32_lazy_data) + 64; + } + if ((arg1 == 2 && arg2 == 32) || (arg2 == 2 && arg1 == 32)) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_2_32_lazy_data) + 64; + } + if ((arg1 == 8 && arg2 == 32) || (arg2 == 8 && arg1 == 32) || + (mult_type == GF_MULT_DEFAULT && !(gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon))) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_8_32_lazy_data) + 64; + } + if ((arg1 == 4 && arg2 == 32) || + (arg2 == 4 && arg1 == 32) || + mult_type == GF_MULT_DEFAULT) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_4_32_lazy_data) + 64; + } + return 0; + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_CARRY_FREE_GK: + return sizeof(gf_internal_t) + sizeof(uint64_t)*2; + break; + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + case GF_MULT_COMPOSITE: + return sizeof(gf_internal_t) + sizeof(struct gf_w32_composite_data) + 64; + break; + + default: + return 0; + } + return 0; +} + +int gf_w32_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set default primitive polynomial / irreducible polynomial if needed */ + + if (h->prim_poly == 0) { + if (h->mult_type == GF_MULT_COMPOSITE) { + h->prim_poly = gf_composite_get_default_poly(h->base_gf); + if (h->prim_poly == 0) return 0; /* This shouldn't happen */ + } else { + + /* Allen: use the following primitive polynomial to make carryless multiply work more efficiently for GF(2^32).*/ + + /* h->prim_poly = 0xc5; */ + + /* Allen: The following is the traditional primitive polynomial for GF(2^32) */ + + h->prim_poly = 0x400007; + } + } + + /* No leading one */ + + if(h->mult_type != GF_MULT_COMPOSITE) h->prim_poly &= 0xffffffff; + + SET_FUNCTION(gf,multiply,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,NULL) + + switch(h->mult_type) { + case GF_MULT_CARRY_FREE: if (gf_w32_cfm_init(gf) == 0) return 0; break; + case GF_MULT_CARRY_FREE_GK: if (gf_w32_cfmgk_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w32_shift_init(gf) == 0) return 0; break; + case GF_MULT_COMPOSITE: if (gf_w32_composite_init(gf) == 0) return 0; break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: if (gf_w32_split_init(gf) == 0) return 0; break; + case GF_MULT_GROUP: if (gf_w32_group_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w32_bytwo_init(gf) == 0) return 0; break; + default: return 0; + } + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w32,gf_w32_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w32_euclid) + } else if (h->divide_type == GF_DIVIDE_MATRIX) { + SET_FUNCTION(gf,divide,w32,gf_w32_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w32_matrix) + } + + if (gf->inverse.w32 != NULL && gf->divide.w32 == NULL) { + SET_FUNCTION(gf,divide,w32,gf_w32_divide_from_inverse) + } + if (gf->inverse.w32 == NULL && gf->divide.w32 != NULL) { + SET_FUNCTION(gf,inverse,w32,gf_w32_inverse_from_divide) + } + if (h->region_type == GF_REGION_CAUCHY) { + SET_FUNCTION(gf,extract_word,w32,gf_wgen_extract_word) + SET_FUNCTION(gf,multiply_region,w32,gf_wgen_cauchy_region) + } else if (h->region_type & GF_REGION_ALTMAP) { + if (h->mult_type == GF_MULT_COMPOSITE) { + SET_FUNCTION(gf,extract_word,w32,gf_w32_composite_extract_word) + } else { + SET_FUNCTION(gf,extract_word,w32,gf_w32_split_extract_word) + } + } else { + SET_FUNCTION(gf,extract_word,w32,gf_w32_extract_word) + } + return 1; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w4.c b/src/erasure-code/jerasure/gf-complete/src/gf_w4.c new file mode 100644 index 00000000..3a7b9531 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w4.c @@ -0,0 +1,2047 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w4.c + * + * Routines for 4-bit Galois fields + */ + +#include "gf_int.h" +#include +#include +#include "gf_w4.h" +#include "gf_cpu.h" + +#define AB2(ip, am1 ,am2, b, t1, t2) {\ + t1 = (b << 1) & am1;\ + t2 = b & am2; \ + t2 = ((t2 << 1) - (t2 >> (GF_FIELD_WIDTH-1))); \ + b = (t1 ^ (t2 & ip));} + +// ToDo(KMG/JSP): Why is 0x88 hard-coded? +#define SSE_AB2(pp, m1, va, t1, t2) {\ + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); \ + t2 = _mm_and_si128(va, _mm_set1_epi8(0x88)); \ + t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \ + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); } + +/* ------------------------------------------------------------ + JSP: These are basic and work from multiple implementations. + */ + +static +inline +gf_val_32_t gf_w4_inverse_from_divide (gf_t *gf, gf_val_32_t a) +{ + return gf->divide.w32(gf, 1, a); +} + +static +inline +gf_val_32_t gf_w4_divide_from_inverse (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + b = gf->inverse.w32(gf, b); + return gf->multiply.w32(gf, a, b); +} + +static +inline +gf_val_32_t gf_w4_euclid (gf_t *gf, gf_val_32_t b) +{ + gf_val_32_t e_i, e_im1, e_ip1; + gf_val_32_t d_i, d_im1, d_ip1; + gf_val_32_t y_i, y_im1, y_ip1; + gf_val_32_t c_i; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = 4; + for (d_i = d_im1; ((1 << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (1 << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + if (e_ip1 == 0) return 0; + while ((e_ip1 & (1 << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w32(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +static +gf_val_32_t gf_w4_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint8_t *r8, v; + + r8 = (uint8_t *) start; + v = r8[index/2]; + if (index%2) { + return v >> 4; + } else { + return v&0xf; + } +} + + +static +inline +gf_val_32_t gf_w4_matrix (gf_t *gf, gf_val_32_t b) +{ + return gf_bitmatrix_inverse(b, 4, ((gf_internal_t *) (gf->scratch))->prim_poly); +} + + +static +inline +gf_val_32_t +gf_w4_shift_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint8_t product, i, pp; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + product = 0; + + for (i = 0; i < GF_FIELD_WIDTH; i++) { + if (a & (1 << i)) product ^= (b << i); + } + for (i = (GF_FIELD_WIDTH*2-2); i >= GF_FIELD_WIDTH; i--) { + if (product & (1 << i)) product ^= (pp << (i-GF_FIELD_WIDTH)); + } + return product; +} + +/* Ben: This function works, but it is 33% slower than the normal shift mult */ + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w4_clm_multiply (gf_t *gf, gf_val_32_t a4, gf_val_32_t b4) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a4, 0); + b = _mm_insert_epi32 (a, b4, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1fULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + /* Ben/JSP: Do prim_poly reduction once. We are guaranteed that we will only + have to do the reduction only once, because (w-2)/z == 1. Where + z is equal to the number of zeros after the leading 1. + + _mm_clmulepi64_si128 is the carryless multiply operation. Here + _mm_srli_epi64 shifts the result to the right by 4 bits. This allows + us to multiply the prim_poly by the leading bits of the result. We + then xor the result of that operation back with the result. */ + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_epi64 (result, 4), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + return rv; +} +#endif + +static +void +gf_w4_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int + xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) { + while (d8 < ((uint8_t *) rd.d_top)) { + *d8 ^= (gf->multiply.w32(gf, val, (*s8 & 0xf)) | + ((gf->multiply.w32(gf, val, (*s8 >> 4))) << 4)); + d8++; + s8++; + } + } else { + while (d8 < ((uint8_t *) rd.d_top)) { + *d8 = (gf->multiply.w32(gf, val, (*s8 & 0xf)) | + ((gf->multiply.w32(gf, val, (*s8 >> 4))) << 4)); + d8++; + s8++; + } + } + gf_do_final_region_alignment(&rd); +} + +/* ------------------------------------------------------------ + IMPLEMENTATION: LOG_TABLE: + + JSP: This is a basic log-antilog implementation. + I'm not going to spend any time optimizing it because the + other techniques are faster for both single and region + operations. + */ + +static +inline +gf_val_32_t +gf_w4_log_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_logtable_data *ltd; + + ltd = (struct gf_logtable_data *) ((gf_internal_t *) (gf->scratch))->private; + return (a == 0 || b == 0) ? 0 : ltd->antilog_tbl[(unsigned)(ltd->log_tbl[a] + ltd->log_tbl[b])]; +} + +static +inline +gf_val_32_t +gf_w4_log_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int log_sum = 0; + struct gf_logtable_data *ltd; + + if (a == 0 || b == 0) return 0; + ltd = (struct gf_logtable_data *) ((gf_internal_t *) (gf->scratch))->private; + + log_sum = ltd->log_tbl[a] - ltd->log_tbl[b]; + return (ltd->antilog_tbl_div[log_sum]); +} + +static +void +gf_w4_log_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t lv, b, c; + uint8_t *s8, *d8; + + struct gf_logtable_data *ltd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + ltd = (struct gf_logtable_data *) ((gf_internal_t *) (gf->scratch))->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + lv = ltd->log_tbl[val]; + + for (i = 0; i < bytes; i++) { + c = (xor) ? d8[i] : 0; + b = (s8[i] >> GF_FIELD_WIDTH); + c ^= (b == 0) ? 0 : (ltd->antilog_tbl[lv + ltd->log_tbl[b]] << GF_FIELD_WIDTH); + b = (s8[i] & 0xf); + c ^= (b == 0) ? 0 : ltd->antilog_tbl[lv + ltd->log_tbl[b]]; + d8[i] = c; + } +} + +static +int gf_w4_log_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_logtable_data *ltd; + int i, b; + + h = (gf_internal_t *) gf->scratch; + ltd = h->private; + + for (i = 0; i < GF_FIELD_SIZE; i++) + ltd->log_tbl[i]=0; + + ltd->antilog_tbl_div = ltd->antilog_tbl + (GF_FIELD_SIZE-1); + b = 1; + i = 0; + do { + if (ltd->log_tbl[b] != 0 && i != 0) { + fprintf(stderr, "Cannot construct log table: Polynomial is not primitive.\n\n"); + return 0; + } + ltd->log_tbl[b] = i; + ltd->antilog_tbl[i] = b; + ltd->antilog_tbl[i+GF_FIELD_SIZE-1] = b; + b <<= 1; + i++; + if (b & GF_FIELD_SIZE) b = b ^ h->prim_poly; + } while (b != 1); + + if (i != GF_FIELD_SIZE - 1) { + _gf_errno = GF_E_LOGPOLY; + return 0; + } + + SET_FUNCTION(gf,inverse,w32,gf_w4_inverse_from_divide) + SET_FUNCTION(gf,divide,w32,gf_w4_log_divide) + SET_FUNCTION(gf,multiply,w32,gf_w4_log_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w4_log_multiply_region) + return 1; +} + +/* ------------------------------------------------------------ + IMPLEMENTATION: SINGLE TABLE: JSP. + */ + +static +inline +gf_val_32_t +gf_w4_single_table_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_single_table_data *std; + + std = (struct gf_single_table_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->mult[a][b]; +} + +static +inline +gf_val_32_t +gf_w4_single_table_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_single_table_data *std; + + std = (struct gf_single_table_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->div[a][b]; +} + +static +void +gf_w4_single_table_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t b, c; + uint8_t *s8, *d8; + + struct gf_single_table_data *std; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + std = (struct gf_single_table_data *) ((gf_internal_t *) (gf->scratch))->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + for (i = 0; i < bytes; i++) { + c = (xor) ? d8[i] : 0; + b = (s8[i] >> GF_FIELD_WIDTH); + c ^= (std->mult[val][b] << GF_FIELD_WIDTH); + b = (s8[i] & 0xf); + c ^= (std->mult[val][b]); + d8[i] = c; + } +} + +#define MM_PRINT(s, r) { uint8_t blah[16]; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (i = 0; i < 16; i++) printf(" %02x", blah[i]); printf("\n"); } + +#ifdef INTEL_SSSE3 +static +void +gf_w4_single_table_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint8_t *base, *sptr, *dptr, *top; + __m128i tl, loset, r, va, th; + + struct gf_single_table_data *std; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + + std = (struct gf_single_table_data *) ((gf_internal_t *) (gf->scratch))->private; + base = (uint8_t *) std->mult; + base += (val << GF_FIELD_WIDTH); + + gf_do_initial_region_alignment(&rd); + + tl = _mm_loadu_si128((__m128i *)base); + th = _mm_slli_epi64(tl, 4); + loset = _mm_set1_epi8 (0x0f); + + sptr = rd.s_start; + dptr = rd.d_start; + top = rd.s_top; + + while (sptr < (uint8_t *) top) { + va = _mm_load_si128 ((__m128i *)(sptr)); + r = _mm_and_si128 (loset, va); + r = _mm_shuffle_epi8 (tl, r); + va = _mm_srli_epi64 (va, 4); + va = _mm_and_si128 (loset, va); + va = _mm_shuffle_epi8 (th, va); + r = _mm_xor_si128 (r, va); + va = (xor) ? _mm_load_si128 ((__m128i *)(dptr)) : _mm_setzero_si128(); + r = _mm_xor_si128 (r, va); + _mm_store_si128 ((__m128i *)(dptr), r); + dptr += 16; + sptr += 16; + } + gf_do_final_region_alignment(&rd); + +} +#endif + +static +int gf_w4_single_table_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_single_table_data *std; + int a, b, prod; + + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_single_table_data *)h->private; + + bzero(std->mult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(std->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + + for (a = 1; a < GF_FIELD_SIZE; a++) { + for (b = 1; b < GF_FIELD_SIZE; b++) { + prod = gf_w4_shift_multiply(gf, a, b); + std->mult[a][b] = prod; + std->div[prod][b] = a; + } + } + + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,divide,w32,gf_w4_single_table_divide) + SET_FUNCTION(gf,multiply,w32,gf_w4_single_table_multiply) + #if defined(INTEL_SSSE3) + if (gf_cpu_supports_intel_ssse3 && !(h->region_type & (GF_REGION_NOSIMD | GF_REGION_CAUCHY))) { + SET_FUNCTION(gf,multiply_region,w32,gf_w4_single_table_sse_multiply_region) + } else { + #elif defined(ARM_NEON) + if (gf_cpu_supports_arm_neon && !(h->region_type & (GF_REGION_NOSIMD | GF_REGION_CAUCHY))) { + gf_w4_neon_single_table_init(gf); + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w4_single_table_multiply_region) + if (h->region_type & GF_REGION_SIMD) return 0; + #if defined(INTEL_SSSE3) || defined(ARM_NEON) + } + #endif + + return 1; +} + +/* ------------------------------------------------------------ + IMPLEMENTATION: DOUBLE TABLE: JSP. + */ + +static +inline +gf_val_32_t +gf_w4_double_table_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_double_table_data *std; + + std = (struct gf_double_table_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->mult[a][b]; +} + +static +inline +gf_val_32_t +gf_w4_double_table_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_double_table_data *std; + + std = (struct gf_double_table_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->div[a][b]; +} + +static +void +gf_w4_double_table_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8, *base; + gf_region_data rd; + struct gf_double_table_data *std; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + + std = (struct gf_double_table_data *) ((gf_internal_t *) (gf->scratch))->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + base = (uint8_t *) std->mult; + base += (val << GF_DOUBLE_WIDTH); + + if (xor) { + for (i = 0; i < bytes; i++) d8[i] ^= base[s8[i]]; + } else { + for (i = 0; i < bytes; i++) d8[i] = base[s8[i]]; + } +} + +static +int gf_w4_double_table_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_double_table_data *std; + int a, b, c, prod, ab; + uint8_t mult[GF_FIELD_SIZE][GF_FIELD_SIZE]; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_double_table_data *)h->private; + + bzero(mult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(std->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + + for (a = 1; a < GF_FIELD_SIZE; a++) { + for (b = 1; b < GF_FIELD_SIZE; b++) { + prod = gf_w4_shift_multiply(gf, a, b); + mult[a][b] = prod; + std->div[prod][b] = a; + } + } + bzero(std->mult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE * GF_FIELD_SIZE); + for (a = 0; a < GF_FIELD_SIZE; a++) { + for (b = 0; b < GF_FIELD_SIZE; b++) { + ab = mult[a][b]; + for (c = 0; c < GF_FIELD_SIZE; c++) { + std->mult[a][(b << 4) | c] = ((ab << 4) | mult[a][c]); + } + } + } + + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,divide,w32,gf_w4_double_table_divide) + SET_FUNCTION(gf,multiply,w32,gf_w4_double_table_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w4_double_table_multiply_region) + return 1; +} + + +static +inline +gf_val_32_t +gf_w4_quad_table_lazy_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_quad_table_lazy_data *std; + + std = (struct gf_quad_table_lazy_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->div[a][b]; +} + +static +inline +gf_val_32_t +gf_w4_quad_table_lazy_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_quad_table_lazy_data *std; + + std = (struct gf_quad_table_lazy_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->smult[a][b]; +} + +static +inline +gf_val_32_t +gf_w4_quad_table_divide (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_quad_table_data *std; + + std = (struct gf_quad_table_data *) ((gf_internal_t *) (gf->scratch))->private; + return std->div[a][b]; +} + +static +inline +gf_val_32_t +gf_w4_quad_table_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_quad_table_data *std; + uint16_t v; + + std = (struct gf_quad_table_data *) ((gf_internal_t *) (gf->scratch))->private; + v = std->mult[a][b]; + return v; +} + +static +void +gf_w4_quad_table_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint16_t *base; + gf_region_data rd; + struct gf_quad_table_data *std; + struct gf_quad_table_lazy_data *ltd; + gf_internal_t *h; + int a, b, c, d, va, vb, vc, vd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) (gf->scratch); + if (h->region_type & GF_REGION_LAZY) { + ltd = (struct gf_quad_table_lazy_data *) ((gf_internal_t *) (gf->scratch))->private; + base = ltd->mult; + for (a = 0; a < 16; a++) { + va = (ltd->smult[val][a] << 12); + for (b = 0; b < 16; b++) { + vb = (ltd->smult[val][b] << 8); + for (c = 0; c < 16; c++) { + vc = (ltd->smult[val][c] << 4); + for (d = 0; d < 16; d++) { + vd = ltd->smult[val][d]; + base[(a << 12) | (b << 8) | (c << 4) | d ] = (va | vb | vc | vd); + } + } + } + } + } else { + std = (struct gf_quad_table_data *) ((gf_internal_t *) (gf->scratch))->private; + base = &(std->mult[val][0]); + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + gf_two_byte_region_table_multiply(&rd, base); + gf_do_final_region_alignment(&rd); +} + +static +int gf_w4_quad_table_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_quad_table_data *std; + int prod, val, a, b, c, d, va, vb, vc, vd; + uint8_t mult[GF_FIELD_SIZE][GF_FIELD_SIZE]; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_quad_table_data *)h->private; + + bzero(mult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(std->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + + for (a = 1; a < GF_FIELD_SIZE; a++) { + for (b = 1; b < GF_FIELD_SIZE; b++) { + prod = gf_w4_shift_multiply(gf, a, b); + mult[a][b] = prod; + std->div[prod][b] = a; + } + } + + for (val = 0; val < 16; val++) { + for (a = 0; a < 16; a++) { + va = (mult[val][a] << 12); + for (b = 0; b < 16; b++) { + vb = (mult[val][b] << 8); + for (c = 0; c < 16; c++) { + vc = (mult[val][c] << 4); + for (d = 0; d < 16; d++) { + vd = mult[val][d]; + std->mult[val][(a << 12) | (b << 8) | (c << 4) | d ] = (va | vb | vc | vd); + } + } + } + } + } + + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,divide,w32,gf_w4_quad_table_divide) + SET_FUNCTION(gf,multiply,w32,gf_w4_quad_table_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w4_quad_table_multiply_region) + return 1; +} +static +int gf_w4_quad_table_lazy_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_quad_table_lazy_data *std; + int a, b, prod, loga, logb; + uint8_t log_tbl[GF_FIELD_SIZE]; + uint8_t antilog_tbl[GF_FIELD_SIZE*2]; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_quad_table_lazy_data *)h->private; + + b = 1; + for (a = 0; a < GF_MULT_GROUP_SIZE; a++) { + log_tbl[b] = a; + antilog_tbl[a] = b; + antilog_tbl[a+GF_MULT_GROUP_SIZE] = b; + b <<= 1; + if (b & GF_FIELD_SIZE) { + b = b ^ h->prim_poly; + } + } + + bzero(std->smult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(std->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + + for (a = 1; a < GF_FIELD_SIZE; a++) { + loga = log_tbl[a]; + for (b = 1; b < GF_FIELD_SIZE; b++) { + logb = log_tbl[b]; + prod = antilog_tbl[loga+logb]; + std->smult[a][b] = prod; + std->div[prod][b] = a; + } + } + + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,divide,w32,gf_w4_quad_table_lazy_divide) + SET_FUNCTION(gf,multiply,w32,gf_w4_quad_table_lazy_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w4_quad_table_multiply_region) + return 1; +} + +static +int gf_w4_table_init(gf_t *gf) +{ + int rt; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + rt = (h->region_type); + + if (h->mult_type == GF_MULT_DEFAULT && + !(gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon)) + rt |= GF_REGION_DOUBLE_TABLE; + + if (rt & GF_REGION_DOUBLE_TABLE) { + return gf_w4_double_table_init(gf); + } else if (rt & GF_REGION_QUAD_TABLE) { + if (rt & GF_REGION_LAZY) { + return gf_w4_quad_table_lazy_init(gf); + } else { + return gf_w4_quad_table_init(gf); + } + } else { + return gf_w4_single_table_init(gf); + } + return 0; +} + +/* ------------------------------------------------------------ + JSP: GF_MULT_BYTWO_p and _b: See the paper. +*/ + +static +inline +gf_val_32_t +gf_w4_bytwo_p_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + + prod = 0; + pmask = 0x8; + amask = 0x8; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + +static +inline +gf_val_32_t +gf_w4_bytwo_b_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = 0x8; + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static +void +gf_w4_bytwo_p_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, prod, amask; + gf_region_data rd; + struct gf_bytwo_data *btd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x8; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x8; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +#define BYTWO_P_ONESTEP {\ + SSE_AB2(pp, m1, prod, t1, t2); \ + t1 = _mm_and_si128(v, one); \ + t1 = _mm_sub_epi8(t1, one); \ + t1 = _mm_and_si128(t1, ta); \ + prod = _mm_xor_si128(prod, t1); \ + v = _mm_srli_epi64(v, 1); } + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_p_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + uint8_t vrev; + __m128i pp, m1, ta, prod, t1, t2, tp, one, v; + struct gf_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + vrev = 0; + for (i = 0; i < 4; i++) { + vrev <<= 1; + if (!(val & (1 << i))) vrev |= 1; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + one = _mm_set1_epi8(1); + + while (d8 < (uint8_t *) rd.d_top) { + prod = _mm_setzero_si128(); + v = _mm_set1_epi8(vrev); + ta = _mm_load_si128((__m128i *) s8); + tp = (!xor) ? _mm_setzero_si128() : _mm_load_si128((__m128i *) d8); + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + _mm_store_si128((__m128i *) d8, _mm_xor_si128(prod, tp)); + d8 += 16; + s8 += 16; + } + gf_do_final_region_alignment(&rd); +} +#endif + +/* +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint8_t *d8, *s8, tb; + __m128i pp, m1, m2, t1, t2, va, vb; + struct gf_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + btd = (struct gf_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + + if (xor) { + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_load_si128 ((__m128i *)(d8)); + tb = val; + while (1) { + if (tb & 1) vb = _mm_xor_si128(vb, va); + tb >>= 1; + if (tb == 0) break; + SSE_AB2(pp, m1, m2, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + } else { + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_setzero_si128 (); + tb = val; + while (1) { + if (tb & 1) vb = _mm_xor_si128(vb, va); + tb >>= 1; + if (tb == 0) break; + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); + t2 = _mm_and_si128(va, m2); + t2 = _mm_sub_epi64 ( + _mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + } + gf_do_final_region_alignment(&rd); +} +#endif +*/ + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_2_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_2_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_4_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + SSE_AB2(pp, m1, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_4_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_3_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = va; + SSE_AB2(pp, m1, va, t1, t2); + va = _mm_xor_si128(va, vb); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_3_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_xor_si128(_mm_load_si128 ((__m128i *)(d8)), va); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_5_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = va; + SSE_AB2(pp, m1, va, t1, t2); + SSE_AB2(pp, m1, va, t1, t2); + va = _mm_xor_si128(va, vb); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_5_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_xor_si128(_mm_load_si128 ((__m128i *)(d8)), va); + SSE_AB2(pp, m1, va, t1, t2); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_7_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = va; + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(va, vb); + SSE_AB2(pp, m1, va, t1, t2); + va = _mm_xor_si128(va, vb); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_7_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_xor_si128(_mm_load_si128 ((__m128i *)(d8)), va); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(vb, va); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_6_noxor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + vb = va; + SSE_AB2(pp, m1, va, t1, t2); + va = _mm_xor_si128(va, vb); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_region_6_xor(gf_region_data *rd, struct gf_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(_mm_load_si128 ((__m128i *)(d8)), va); + SSE_AB2(pp, m1, va, t1, t2); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w4_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint8_t *d8, *s8, tb; + __m128i pp, m1, m2, t1, t2, va, vb; + struct gf_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + btd = (struct gf_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + switch (val) { + case 2: + if (!xor) { + gf_w4_bytwo_b_sse_region_2_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_2_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + case 3: + if (!xor) { + gf_w4_bytwo_b_sse_region_3_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_3_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + case 4: + if (!xor) { + gf_w4_bytwo_b_sse_region_4_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_4_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + case 5: + if (!xor) { + gf_w4_bytwo_b_sse_region_5_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_5_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + case 6: + if (!xor) { + gf_w4_bytwo_b_sse_region_6_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_6_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + case 7: + if (!xor) { + gf_w4_bytwo_b_sse_region_7_noxor(&rd, btd); + } else { + gf_w4_bytwo_b_sse_region_7_xor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + } + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + + if (xor) { + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_load_si128 ((__m128i *)(d8)); + tb = val; + while (1) { + if (tb & 1) vb = _mm_xor_si128(vb, va); + tb >>= 1; + if (tb == 0) break; + SSE_AB2(pp, m1, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + } else { + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = _mm_setzero_si128 (); + tb = val; + while (1) { + if (tb & 1) vb = _mm_xor_si128(vb, va); + tb >>= 1; + if (tb == 0) break; + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); + t2 = _mm_and_si128(va, m2); + t2 = _mm_sub_epi64 ( + _mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +static +void +gf_w4_bytwo_b_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, tb, prod; + struct gf_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + switch (val) { + case 1: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + *d64 ^= *s64; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + *d64 = *s64; + d64++; + s64++; + } + } + break; + case 2: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 3: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 4: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 5: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + case 6: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + case 7: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + case 8: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 9: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 10: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 11: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 12: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 13: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 14: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 15: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + default: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + prod = *d64 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + prod = 0 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } + break; + } + gf_do_final_region_alignment(&rd); +} + +static +int gf_w4_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + uint64_t ip, m1, m2; + struct gf_bytwo_data *btd; + + h = (gf_internal_t *) gf->scratch; + btd = (struct gf_bytwo_data *) (h->private); + ip = h->prim_poly & 0xf; + m1 = 0xe; + m2 = 0x8; + btd->prim_poly = 0; + btd->mask1 = 0; + btd->mask2 = 0; + + while (ip != 0) { + btd->prim_poly |= ip; + btd->mask1 |= m1; + btd->mask2 |= m2; + ip <<= GF_FIELD_WIDTH; + m1 <<= GF_FIELD_WIDTH; + m2 <<= GF_FIELD_WIDTH; + } + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w32,gf_w4_bytwo_p_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w4_bytwo_p_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w4_bytwo_p_nosse_multiply_region) + if (h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } else { + SET_FUNCTION(gf,multiply,w32,gf_w4_bytwo_b_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w4_bytwo_b_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w4_bytwo_b_nosse_multiply_region) + if (h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } + return 1; +} + + +static +int gf_w4_cfm_init(gf_t *gf) +{ +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + SET_FUNCTION(gf,multiply,w32,gf_w4_clm_multiply) + return 1; + } +#elif defined(ARM_NEON) + if (gf_cpu_supports_arm_neon) { + return gf_w4_neon_cfm_init(gf); + } +#endif + return 0; +} + +static +int gf_w4_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_w4_shift_multiply) + return 1; +} + +/* JSP: I'm putting all error-checking into gf_error_check(), so you don't + have to do error checking in scratch_size or in init */ + +int gf_w4_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + switch(mult_type) + { + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t) + sizeof(struct gf_bytwo_data); + break; + case GF_MULT_DEFAULT: + case GF_MULT_TABLE: + if (region_type == GF_REGION_CAUCHY) { + return sizeof(gf_internal_t) + sizeof(struct gf_single_table_data) + 64; + } + + if (mult_type == GF_MULT_DEFAULT && + !(gf_cpu_supports_arm_neon || gf_cpu_supports_intel_ssse3)) + region_type = GF_REGION_DOUBLE_TABLE; + + if (region_type & GF_REGION_DOUBLE_TABLE) { + return sizeof(gf_internal_t) + sizeof(struct gf_double_table_data) + 64; + } else if (region_type & GF_REGION_QUAD_TABLE) { + if ((region_type & GF_REGION_LAZY) == 0) { + return sizeof(gf_internal_t) + sizeof(struct gf_quad_table_data) + 64; + } else { + return sizeof(gf_internal_t) + sizeof(struct gf_quad_table_lazy_data) + 64; + } + } else { + return sizeof(gf_internal_t) + sizeof(struct gf_single_table_data) + 64; + } + break; + + case GF_MULT_LOG_TABLE: + return sizeof(gf_internal_t) + sizeof(struct gf_logtable_data) + 64; + break; + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + default: + return 0; + } + return 0; +} + +int +gf_w4_init (gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + if (h->prim_poly == 0) h->prim_poly = 0x13; + h->prim_poly |= 0x10; + SET_FUNCTION(gf,multiply,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,NULL) + SET_FUNCTION(gf,extract_word,w32,gf_w4_extract_word) + + switch(h->mult_type) { + case GF_MULT_CARRY_FREE: if (gf_w4_cfm_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w4_shift_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w4_bytwo_init(gf) == 0) return 0; break; + case GF_MULT_LOG_TABLE: if (gf_w4_log_init(gf) == 0) return 0; break; + case GF_MULT_DEFAULT: + case GF_MULT_TABLE: if (gf_w4_table_init(gf) == 0) return 0; break; + default: return 0; + } + + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w32,gf_w4_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w4_euclid) + } else if (h->divide_type == GF_DIVIDE_MATRIX) { + SET_FUNCTION(gf,divide,w32,gf_w4_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w4_matrix) + } + + if (gf->divide.w32 == NULL) { + SET_FUNCTION(gf,divide,w32,gf_w4_divide_from_inverse) + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w4_euclid) + } + + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w4_inverse_from_divide) + + if (h->region_type == GF_REGION_CAUCHY) { + SET_FUNCTION(gf,multiply_region,w32,gf_wgen_cauchy_region) + SET_FUNCTION(gf,extract_word,w32,gf_wgen_extract_word) + } + + if (gf->multiply_region.w32 == NULL) { + SET_FUNCTION(gf,multiply_region,w32,gf_w4_multiply_region_from_single) + } + + return 1; +} + +/* Inline setup functions */ + +uint8_t *gf_w4_get_mult_table(gf_t *gf) +{ + gf_internal_t *h; + struct gf_single_table_data *std; + + h = (gf_internal_t *) gf->scratch; + if (gf->multiply.w32 == gf_w4_single_table_multiply) { + std = (struct gf_single_table_data *) h->private; + return (uint8_t *) std->mult; + } + return NULL; +} + +uint8_t *gf_w4_get_div_table(gf_t *gf) +{ + gf_internal_t *h; + struct gf_single_table_data *std; + + h = (gf_internal_t *) gf->scratch; + if (gf->multiply.w32 == gf_w4_single_table_multiply) { + std = (struct gf_single_table_data *) h->private; + return (uint8_t *) std->div; + } + return NULL; +} + diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w64.c b/src/erasure-code/jerasure/gf-complete/src/gf_w64.c new file mode 100644 index 00000000..69e55dbd --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w64.c @@ -0,0 +1,2235 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w64.c + * + * Routines for 64-bit Galois fields + */ + +#include "gf_int.h" +#include +#include +#include "gf_w64.h" +#include "gf_cpu.h" + +static +inline +gf_val_64_t gf_w64_inverse_from_divide (gf_t *gf, gf_val_64_t a) +{ + return gf->divide.w64(gf, 1, a); +} + +#define MM_PRINT8(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 1) printf("%s%02x", (ii%4==0) ? " " : " ", blah[15-ii]); printf("\n"); } + +static +inline +gf_val_64_t gf_w64_divide_from_inverse (gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + b = gf->inverse.w64(gf, b); + return gf->multiply.w64(gf, a, b); +} + +static +void +gf_w64_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int +xor) +{ + uint32_t i; + gf_val_64_t *s64; + gf_val_64_t *d64; + + s64 = (gf_val_64_t *) src; + d64 = (gf_val_64_t *) dest; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + if (xor) { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i++) { + d64[i] ^= gf->multiply.w64(gf, val, s64[i]); + } + } else { + for (i = 0; i < bytes/sizeof(gf_val_64_t); i++) { + d64[i] = gf->multiply.w64(gf, val, s64[i]); + } + } +} + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w64_clm_multiply_region_from_single_2(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int +xor) +{ + gf_val_64_t *s64, *d64, *top; + gf_region_data rd; + + __m128i a, b; + __m128i result, r1; + __m128i prim_poly; + __m128i w; + __m128i m1, m3, m4; + gf_internal_t * h = gf->scratch; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0xffffffffULL)); + b = _mm_insert_epi64 (_mm_setzero_si128(), val, 0); + m1 = _mm_set_epi32(0, 0, 0, (uint32_t)0xffffffff); + m3 = _mm_slli_si128(m1, 8); + m4 = _mm_slli_si128(m3, 4); + + s64 = (gf_val_64_t *) rd.s_start; + d64 = (gf_val_64_t *) rd.d_start; + top = (gf_val_64_t *) rd.d_top; + + if (xor) { + while (d64 != top) { + a = _mm_load_si128((__m128i *) s64); + result = _mm_clmulepi64_si128 (a, b, 1); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + r1 = _mm_xor_si128 (result, w); + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + result = _mm_unpacklo_epi64(result, r1); + + r1 = _mm_load_si128((__m128i *) d64); + result = _mm_xor_si128(r1, result); + _mm_store_si128((__m128i *) d64, result); + d64 += 2; + s64 += 2; + } + } else { + while (d64 != top) { + + a = _mm_load_si128((__m128i *) s64); + result = _mm_clmulepi64_si128 (a, b, 1); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + r1 = _mm_xor_si128 (result, w); + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + result = _mm_unpacklo_epi64(result, r1); + + _mm_store_si128((__m128i *) d64, result); + d64 += 2; + s64 += 2; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w64_clm_multiply_region_from_single_4(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int +xor) +{ + gf_val_64_t *s64, *d64, *top; + gf_region_data rd; + + __m128i a, b; + __m128i result, r1; + __m128i prim_poly; + __m128i w; + __m128i m1, m3, m4; + gf_internal_t * h = gf->scratch; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0xffffffffULL)); + b = _mm_insert_epi64 (_mm_setzero_si128(), val, 0); + m1 = _mm_set_epi32(0, 0, 0, (uint32_t)0xffffffff); + m3 = _mm_slli_si128(m1, 8); + m4 = _mm_slli_si128(m3, 4); + + s64 = (gf_val_64_t *) rd.s_start; + d64 = (gf_val_64_t *) rd.d_start; + top = (gf_val_64_t *) rd.d_top; + + if (xor) { + while (d64 != top) { + a = _mm_load_si128((__m128i *) s64); + result = _mm_clmulepi64_si128 (a, b, 1); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + r1 = _mm_xor_si128 (result, w); + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + result = _mm_unpacklo_epi64(result, r1); + + r1 = _mm_load_si128((__m128i *) d64); + result = _mm_xor_si128(r1, result); + _mm_store_si128((__m128i *) d64, result); + d64 += 2; + s64 += 2; + } + } else { + while (d64 != top) { + a = _mm_load_si128((__m128i *) s64); + result = _mm_clmulepi64_si128 (a, b, 1); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + r1 = _mm_xor_si128 (result, w); + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m4), prim_poly, 1); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (_mm_and_si128(result, m3), prim_poly, 1); + result = _mm_xor_si128 (result, w); + + result = _mm_unpacklo_epi64(result, r1); + + _mm_store_si128((__m128i *) d64, result); + d64 += 2; + s64 += 2; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +static + inline +gf_val_64_t gf_w64_euclid (gf_t *gf, gf_val_64_t b) +{ + gf_val_64_t e_i, e_im1, e_ip1; + gf_val_64_t d_i, d_im1, d_ip1; + gf_val_64_t y_i, y_im1, y_ip1; + gf_val_64_t c_i; + gf_val_64_t one = 1; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = 64; + for (d_i = d_im1-1; ((one << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (one << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + d_ip1--; + if (e_ip1 == 0) return 0; + while ((e_ip1 & (one << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w64(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +/* JSP: GF_MULT_SHIFT: The world's dumbest multiplication algorithm. I only + include it for completeness. It does have the feature that it requires no + extra memory. +*/ + +static +inline +gf_val_64_t +gf_w64_shift_multiply (gf_t *gf, gf_val_64_t a64, gf_val_64_t b64) +{ + uint64_t pl, pr, ppl, ppr, i, a, bl, br, one, lbit; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set leading one of primitive polynomial */ + + a = a64; + bl = 0; + br = b64; + one = 1; + lbit = (one << 63); + + pl = 0; /* Allen: left side of product */ + pr = 0; /* Allen: right side of product */ + + /* Allen: unlike the corresponding functions for smaller word sizes, + * this loop carries out the initial carryless multiply by + * shifting b itself rather than simply looking at successively + * higher shifts of b */ + + for (i = 0; i < GF_FIELD_WIDTH; i++) { + if (a & (one << i)) { + pl ^= bl; + pr ^= br; + } + + bl <<= 1; + if (br & lbit) bl ^= 1; + br <<= 1; + } + + /* Allen: the name of the variable "one" is no longer descriptive at this point */ + + one = lbit >> 1; + ppl = (h->prim_poly >> 2) | one; + ppr = (h->prim_poly << (GF_FIELD_WIDTH-2)); + while (one != 0) { + if (pl & one) { + pl ^= ppl; + pr ^= ppr; + } + one >>= 1; + ppr >>= 1; + if (ppl & 1) ppr ^= lbit; + ppl >>= 1; + } + return pr; +} + +/* + * ELM: Use the Intel carryless multiply instruction to do very fast 64x64 multiply. + */ + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_64_t +gf_w64_clm_multiply_2 (gf_t *gf, gf_val_64_t a64, gf_val_64_t b64) +{ + gf_val_64_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i v, w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi64 (_mm_setzero_si128(), a64, 0); + b = _mm_insert_epi64 (a, b64, 0); + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0xffffffffULL)); + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + /* Mask off the high order 32 bits using subtraction of the polynomial. + * NOTE: this part requires that the polynomial have at least 32 leading 0 bits. + */ + + /* Adam: We cant include the leading one in the 64 bit pclmul, + so we need to split up the high 8 bytes of the result into two + parts before we multiply them with the prim_poly.*/ + + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + + rv = ((gf_val_64_t)_mm_extract_epi64(result, 0)); + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) + +static +inline +gf_val_64_t +gf_w64_clm_multiply_4 (gf_t *gf, gf_val_64_t a64, gf_val_64_t b64) +{ + gf_val_64_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i v, w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi64 (_mm_setzero_si128(), a64, 0); + b = _mm_insert_epi64 (a, b64, 0); + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + v = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, v, 0); + result = _mm_xor_si128 (result, w); + + rv = ((gf_val_64_t)_mm_extract_epi64(result, 0)); + return rv; +} +#endif + + +#if defined(INTEL_SSE4_PCLMUL) + void +gf_w64_clm_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + uint8_t *s8, *d8, *dtop; + gf_region_data rd; + __m128i v, b, m, prim_poly, c, fr, w, result; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + dtop = (uint8_t *) rd.d_top; + + v = _mm_insert_epi64(_mm_setzero_si128(), val, 0); + m = _mm_set_epi32(0, 0, 0xffffffff, 0xffffffff); + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0xffffffffULL)); + + if (xor) { + while (d8 != dtop) { + b = _mm_load_si128((__m128i *) s8); + result = _mm_clmulepi64_si128 (b, v, 0); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + fr = _mm_xor_si128 (result, w); + fr = _mm_and_si128 (fr, m); + + result = _mm_clmulepi64_si128 (b, v, 1); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + result = _mm_slli_si128 (result, 8); + fr = _mm_xor_si128 (result, fr); + result = _mm_load_si128((__m128i *) d8); + fr = _mm_xor_si128 (result, fr); + + _mm_store_si128((__m128i *) d8, fr); + d8 += 16; + s8 += 16; + } + } else { + while (d8 < dtop) { + b = _mm_load_si128((__m128i *) s8); + result = _mm_clmulepi64_si128 (b, v, 0); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + fr = _mm_xor_si128 (result, w); + fr = _mm_and_si128 (fr, m); + + result = _mm_clmulepi64_si128 (b, v, 1); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 0); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + c = _mm_insert_epi32 (_mm_srli_si128 (result, 8), 0, 1); + w = _mm_clmulepi64_si128 (prim_poly, c, 0); + result = _mm_xor_si128 (result, w); + result = _mm_slli_si128 (result, 8); + fr = _mm_xor_si128 (result, fr); + + _mm_store_si128((__m128i *) d8, fr); + d8 += 16; + s8 += 16; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +void +gf_w64_split_4_64_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + struct gf_split_4_64_lazy_data *ld; + int i, j, k; + uint64_t pp, v, s, *s64, *d64, *top; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + ld = (struct gf_split_4_64_lazy_data *) h->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + if (ld->last_value != val) { + v = val; + for (i = 0; i < 16; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + ld->last_value = val; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + while (d64 != top) { + v = (xor) ? *d64 : 0; + s = *s64; + i = 0; + while (s != 0) { + v ^= ld->tables[i][s&0xf]; + s >>= 4; + i++; + } + *d64 = v; + d64++; + s64++; + } + gf_do_final_region_alignment(&rd); +} + +static +inline +uint64_t +gf_w64_split_8_8_multiply (gf_t *gf, uint64_t a64, uint64_t b64) +{ + uint64_t product, i, j, mask, tb; + gf_internal_t *h; + struct gf_split_8_8_data *d8; + + h = (gf_internal_t *) gf->scratch; + d8 = (struct gf_split_8_8_data *) h->private; + product = 0; + mask = 0xff; + + for (i = 0; a64 != 0; i++) { + tb = b64; + for (j = 0; tb != 0; j++) { + product ^= d8->tables[i+j][a64&mask][tb&mask]; + tb >>= 8; + } + a64 >>= 8; + } + return product; +} + +void +gf_w64_split_8_64_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + struct gf_split_8_64_lazy_data *ld; + int i, j, k; + uint64_t pp, v, s, *s64, *d64, *top; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + ld = (struct gf_split_8_64_lazy_data *) h->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + if (ld->last_value != val) { + v = val; + for (i = 0; i < 8; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 256; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + ld->last_value = val; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + while (d64 != top) { + v = (xor) ? *d64 : 0; + s = *s64; + i = 0; + while (s != 0) { + v ^= ld->tables[i][s&0xff]; + s >>= 8; + i++; + } + *d64 = v; + d64++; + s64++; + } + gf_do_final_region_alignment(&rd); +} + +void +gf_w64_split_16_64_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + struct gf_split_16_64_lazy_data *ld; + int i, j, k; + uint64_t pp, v, s, *s64, *d64, *top; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + ld = (struct gf_split_16_64_lazy_data *) h->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + if (ld->last_value != val) { + v = val; + for (i = 0; i < 4; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < (1<<16); j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + } + ld->last_value = val; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + while (d64 != top) { + v = (xor) ? *d64 : 0; + s = *s64; + i = 0; + while (s != 0) { + v ^= ld->tables[i][s&0xffff]; + s >>= 16; + i++; + } + *d64 = v; + d64++; + s64++; + } + gf_do_final_region_alignment(&rd); +} + +static +int gf_w64_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w64,gf_w64_shift_multiply) + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_multiply_region_from_single) + return 1; +} + +static +int gf_w64_cfm_init(gf_t *gf) +{ + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_multiply_region_from_single) + +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if ((0xfffffffe00000000ULL & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w64,gf_w64_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_clm_multiply_region_from_single_2) + }else if((0xfffe000000000000ULL & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w64,gf_w64_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_clm_multiply_region_from_single_4) + } else { + return 0; + } + return 1; + } +#endif + + return 0; +} + +static +void +gf_w64_group_set_shift_tables(uint64_t *shift, uint64_t val, gf_internal_t *h) +{ + uint64_t i; + uint64_t j; + uint64_t one = 1; + int g_s; + + g_s = h->arg1; + shift[0] = 0; + + for (i = 1; i < ((uint64_t)1 << g_s); i <<= 1) { + for (j = 0; j < i; j++) shift[i|j] = shift[j]^val; + if (val & (one << 63)) { + val <<= 1; + val ^= h->prim_poly; + } else { + val <<= 1; + } + } +} + +static +inline +gf_val_64_t +gf_w64_group_multiply(gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + uint64_t top, bot, mask, tp; + int g_s, g_r, lshift, rshift; + struct gf_w64_group_data *gd; + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + g_r = h->arg2; + gd = (struct gf_w64_group_data *) h->private; + gf_w64_group_set_shift_tables(gd->shift, b, h); + + mask = (((uint64_t)1 << g_s) - 1); + top = 0; + bot = gd->shift[a&mask]; + a >>= g_s; + + if (a == 0) return bot; + lshift = 0; + rshift = 64; + + do { /* Shifting out is straightfoward */ + lshift += g_s; + rshift -= g_s; + tp = gd->shift[a&mask]; + top ^= (tp >> rshift); + bot ^= (tp << lshift); + a >>= g_s; + } while (a != 0); + + /* Reducing is a bit gross, because I don't zero out the index bits of top. + The reason is that we throw top away. Even better, that last (tp >> rshift) + is going to be ignored, so it doesn't matter how (tp >> 64) is implemented. */ + + lshift = ((lshift-1) / g_r) * g_r; + rshift = 64 - lshift; + mask = ((uint64_t)1 << g_r) - 1; + while (lshift >= 0) { + tp = gd->reduce[(top >> lshift) & mask]; + top ^= (tp >> rshift); + bot ^= (tp << lshift); + lshift -= g_r; + rshift += g_r; + } + + return bot; +} + +static +void gf_w64_group_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + int i, fzb; + uint64_t a64, smask, rmask, top, bot, tp; + int lshift, rshift, g_s, g_r; + gf_region_data rd; + uint64_t *s64, *d64, *dtop; + struct gf_w64_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gd = (struct gf_w64_group_data *) h->private; + g_s = h->arg1; + g_r = h->arg2; + gf_w64_group_set_shift_tables(gd->shift, val, h); + + for (i = 63; !(val & (1ULL << i)); i--) ; + i += g_s; + + /* i is the bit position of the first zero bit in any element of + gd->shift[] */ + + if (i > 64) i = 64; + + fzb = i; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + dtop = (uint64_t *) rd.d_top; + + smask = ((uint64_t)1 << g_s) - 1; + rmask = ((uint64_t)1 << g_r) - 1; + + while (d64 < dtop) { + a64 = *s64; + + top = 0; + bot = gd->shift[a64&smask]; + a64 >>= g_s; + i = fzb; + + if (a64 != 0) { + lshift = 0; + rshift = 64; + + do { + lshift += g_s; + rshift -= g_s; + tp = gd->shift[a64&smask]; + top ^= (tp >> rshift); + bot ^= (tp << lshift); + a64 >>= g_s; + } while (a64 != 0); + i += lshift; + + lshift = ((i-64-1) / g_r) * g_r; + rshift = 64 - lshift; + while (lshift >= 0) { + tp = gd->reduce[(top >> lshift) & rmask]; + top ^= (tp >> rshift); + bot ^= (tp << lshift); + lshift -= g_r; + rshift += g_r; + } + } + + if (xor) bot ^= *d64; + *d64 = bot; + d64++; + s64++; + } + gf_do_final_region_alignment(&rd); +} + +static +inline +gf_val_64_t +gf_w64_group_s_equals_r_multiply(gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + int leftover, rs; + uint64_t p, l, ind, a64; + int bits_left; + int g_s; + + struct gf_w64_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + + gd = (struct gf_w64_group_data *) h->private; + gf_w64_group_set_shift_tables(gd->shift, b, h); + + leftover = 64 % g_s; + if (leftover == 0) leftover = g_s; + + rs = 64 - leftover; + a64 = a; + ind = a64 >> rs; + a64 <<= leftover; + p = gd->shift[ind]; + + bits_left = rs; + rs = 64 - g_s; + + while (bits_left > 0) { + bits_left -= g_s; + ind = a64 >> rs; + a64 <<= g_s; + l = p >> rs; + p = (gd->shift[ind] ^ gd->reduce[l] ^ (p << g_s)); + } + return p; +} + +static +void gf_w64_group_s_equals_r_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + int leftover, rs; + uint64_t p, l, ind, a64; + int bits_left; + int g_s; + gf_region_data rd; + uint64_t *s64, *d64, *top; + struct gf_w64_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gd = (struct gf_w64_group_data *) h->private; + g_s = h->arg1; + gf_w64_group_set_shift_tables(gd->shift, val, h); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 4); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + leftover = 64 % g_s; + if (leftover == 0) leftover = g_s; + + while (d64 < top) { + rs = 64 - leftover; + a64 = *s64; + ind = a64 >> rs; + a64 <<= leftover; + p = gd->shift[ind]; + + bits_left = rs; + rs = 64 - g_s; + + while (bits_left > 0) { + bits_left -= g_s; + ind = a64 >> rs; + a64 <<= g_s; + l = p >> rs; + p = (gd->shift[ind] ^ gd->reduce[l] ^ (p << g_s)); + } + if (xor) p ^= *d64; + *d64 = p; + d64++; + s64++; + } + gf_do_final_region_alignment(&rd); +} + + +static +int gf_w64_group_init(gf_t *gf) +{ + uint64_t i, j, p, index; + struct gf_w64_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint64_t g_r, g_s; + + g_s = h->arg1; + g_r = h->arg2; + + gd = (struct gf_w64_group_data *) h->private; + gd->shift = (uint64_t *) (&(gd->memory)); + gd->reduce = gd->shift + (1 << g_s); + + gd->reduce[0] = 0; + for (i = 0; i < ((uint64_t)1 << g_r); i++) { + p = 0; + index = 0; + for (j = 0; j < g_r; j++) { + if (i & (1 << j)) { + p ^= (h->prim_poly << j); + index ^= (1 << j); + if (j > 0) index ^= (h->prim_poly >> (64-j)); + } + } + gd->reduce[index] = p; + } + + if (g_s == g_r) { + SET_FUNCTION(gf,multiply,w64,gf_w64_group_s_equals_r_multiply) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_group_s_equals_r_multiply_region) + } else { + SET_FUNCTION(gf,multiply,w64,gf_w64_group_multiply) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_group_multiply_region) + } + SET_FUNCTION(gf,divide,w64,NULL) + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + + return 1; +} + +static +gf_val_64_t gf_w64_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint64_t *r64, rv; + + r64 = (uint64_t *) start; + rv = r64[index]; + return rv; +} + +static +gf_val_64_t gf_w64_composite_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int sub_size; + gf_internal_t *h; + uint8_t *r8, *top; + uint64_t a, b, *r64; + gf_region_data rd; + + h = (gf_internal_t *) gf->scratch; + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 32); + r64 = (uint64_t *) start; + if (r64 + index < (uint64_t *) rd.d_start) return r64[index]; + if (r64 + index >= (uint64_t *) rd.d_top) return r64[index]; + index -= (((uint64_t *) rd.d_start) - r64); + r8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_size = (top-r8)/2; + + a = h->base_gf->extract_word.w32(h->base_gf, r8, sub_size, index); + b = h->base_gf->extract_word.w32(h->base_gf, r8+sub_size, sub_size, index); + return (a | ((uint64_t)b << 32)); +} + +static +gf_val_64_t gf_w64_split_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int i; + uint64_t *r64, rv; + uint8_t *r8; + gf_region_data rd; + + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 128); + r64 = (uint64_t *) start; + if (r64 + index < (uint64_t *) rd.d_start) return r64[index]; + if (r64 + index >= (uint64_t *) rd.d_top) return r64[index]; + index -= (((uint64_t *) rd.d_start) - r64); + r8 = (uint8_t *) rd.d_start; + r8 += ((index & 0xfffffff0)*8); + r8 += (index & 0xf); + r8 += 112; + rv =0; + for (i = 0; i < 8; i++) { + rv <<= 8; + rv |= *r8; + r8 -= 16; + } + return rv; +} + +static +inline +gf_val_64_t +gf_w64_bytwo_b_multiply (gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + uint64_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = 0x8000000000000000ULL; + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static +inline +gf_val_64_t +gf_w64_bytwo_p_multiply (gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + uint64_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + + /* changed from declare then shift to just declare.*/ + + pmask = 0x8000000000000000ULL; + amask = 0x8000000000000000ULL; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + +static +void +gf_w64_bytwo_p_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, ta, prod, amask, pmask, pp; + gf_region_data rd; + gf_internal_t *h; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + pmask = 0x80000000; + pmask <<= 32; + pp = h->prim_poly; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = pmask; + ta = *s64; + while (amask != 0) { + prod = (prod & pmask) ? ((prod << 1) ^ pp) : (prod << 1); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = pmask; + ta = *s64; + while (amask != 0) { + prod = (prod & pmask) ? ((prod << 1) ^ pp) : (prod << 1); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +static +void +gf_w64_bytwo_b_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, ta, tb, prod, bmask, pp; + gf_region_data rd; + gf_internal_t *h; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + bmask = 0x80000000; + bmask <<= 32; + pp = h->prim_poly; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + tb = val; + ta = *s64; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + ta = (ta & bmask) ? ((ta << 1) ^ pp) : (ta << 1); + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + tb = val; + ta = *s64; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + ta = (ta & bmask) ? ((ta << 1) ^ pp) : (ta << 1); + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +#define SSE_AB2(pp, m1 ,m2, va, t1, t2) {\ + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); \ + t2 = _mm_and_si128(va, m2); \ + t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \ + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); } + +#define BYTWO_P_ONESTEP {\ + SSE_AB2(pp, m1 ,m2, prod, t1, t2); \ + t1 = _mm_and_si128(v, one); \ + t1 = _mm_sub_epi64(t1, one); \ + t1 = _mm_and_si128(t1, ta); \ + prod = _mm_xor_si128(prod, t1); \ + v = _mm_srli_epi64(v, 1); } + + +#ifdef INTEL_SSE2 +void gf_w64_bytwo_p_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + uint64_t vrev, one64; + uint64_t amask; + __m128i pp, m1, m2, ta, prod, t1, t2, tp, one, v; + gf_region_data rd; + gf_internal_t *h; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + h = (gf_internal_t *) gf->scratch; + one64 = 1; + vrev = 0; + for (i = 0; i < 64; i++) { + vrev <<= 1; + if (!(val & (one64 << i))) vrev |= 1; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + amask = -1; + amask ^= 1; + pp = _mm_set1_epi64x(h->prim_poly); + m1 = _mm_set1_epi64x(amask); + m2 = _mm_set1_epi64x(one64 << 63); + one = _mm_set1_epi64x(1); + + while (d8 < (uint8_t *) rd.d_top) { + prod = _mm_setzero_si128(); + v = _mm_set1_epi64x(vrev); + ta = _mm_load_si128((__m128i *) s8); + tp = (!xor) ? _mm_setzero_si128() : _mm_load_si128((__m128i *) d8); + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; BYTWO_P_ONESTEP; + _mm_store_si128((__m128i *) d8, _mm_xor_si128(prod, tp)); + d8 += 16; + s8 += 16; + } + gf_do_final_region_alignment(&rd); +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w64_bytwo_b_sse_region_2_xor(gf_region_data *rd) +{ + uint64_t one64, amask; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + gf_internal_t *h; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + h = (gf_internal_t *) rd->gf->scratch; + one64 = 1; + amask = -1; + amask ^= 1; + pp = _mm_set1_epi64x(h->prim_poly); + m1 = _mm_set1_epi64x(amask); + m2 = _mm_set1_epi64x(one64 << 63); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w64_bytwo_b_sse_region_2_noxor(gf_region_data *rd) +{ + uint64_t one64, amask; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va; + gf_internal_t *h; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + h = (gf_internal_t *) rd->gf->scratch; + one64 = 1; + amask = -1; + amask ^= 1; + pp = _mm_set1_epi64x(h->prim_poly); + m1 = _mm_set1_epi64x(amask); + m2 = _mm_set1_epi64x(one64 << 63); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static +void +gf_w64_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + uint64_t itb, amask, one64; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + gf_region_data rd; + gf_internal_t *h; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + if (val == 2) { + if (xor) { + gf_w64_bytwo_b_sse_region_2_xor(&rd); + } else { + gf_w64_bytwo_b_sse_region_2_noxor(&rd); + } + gf_do_final_region_alignment(&rd); + return; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + h = (gf_internal_t *) gf->scratch; + + one64 = 1; + amask = -1; + amask ^= 1; + pp = _mm_set1_epi64x(h->prim_poly); + m1 = _mm_set1_epi64x(amask); + m2 = _mm_set1_epi64x(one64 << 63); + + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = (!xor) ? _mm_setzero_si128() : _mm_load_si128 ((__m128i *)(d8)); + itb = val; + while (1) { + if (itb & 1) vb = _mm_xor_si128(vb, va); + itb >>= 1; + if (itb == 0) break; + SSE_AB2(pp, m1, m2, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + + gf_do_final_region_alignment(&rd); +} +#endif + + +static +int gf_w64_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w64,gf_w64_bytwo_p_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_bytwo_p_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w64,gf_w64_bytwo_p_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } else { + SET_FUNCTION(gf,multiply,w64,gf_w64_bytwo_b_multiply) + #ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_bytwo_b_sse_multiply_region) + } else { + #endif + SET_FUNCTION(gf,multiply_region,w64,gf_w64_bytwo_b_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #ifdef INTEL_SSE2 + } + #endif + } + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + return 1; +} + + +static +gf_val_64_t +gf_w64_composite_multiply(gf_t *gf, gf_val_64_t a, gf_val_64_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint32_t b0 = b & 0x00000000ffffffff; + uint32_t b1 = (b & 0xffffffff00000000) >> 32; + uint32_t a0 = a & 0x00000000ffffffff; + uint32_t a1 = (a & 0xffffffff00000000) >> 32; + uint32_t a1b1; + + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + return ((uint64_t)(base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((uint64_t)(base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 32)); +} + +/* + * Composite field division trick (explained in 2007 tech report) + * + * Compute a / b = a*b^-1, where p(x) = x^2 + sx + 1 + * + * let c = b^-1 + * + * c*b = (s*b1c1+b1c0+b0c1)x+(b1c1+b0c0) + * + * want (s*b1c1+b1c0+b0c1) = 0 and (b1c1+b0c0) = 1 + * + * let d = b1c1 and d+1 = b0c0 + * + * solve s*b1c1+b1c0+b0c1 = 0 + * + * solution: d = (b1b0^-1)(b1b0^-1+b0b1^-1+s)^-1 + * + * c0 = (d+1)b0^-1 + * c1 = d*b1^-1 + * + * a / b = a * c + */ + +static +gf_val_64_t +gf_w64_composite_inverse(gf_t *gf, gf_val_64_t a) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint32_t a0 = a & 0x00000000ffffffff; + uint32_t a1 = (a & 0xffffffff00000000) >> 32; + uint32_t c0, c1, d, tmp; + uint64_t c; + uint32_t a0inv, a1inv; + + if (a0 == 0) { + a1inv = base_gf->inverse.w32(base_gf, a1); + c0 = base_gf->multiply.w32(base_gf, a1inv, h->prim_poly); + c1 = a1inv; + } else if (a1 == 0) { + c0 = base_gf->inverse.w32(base_gf, a0); + c1 = 0; + } else { + a1inv = base_gf->inverse.w32(base_gf, a1); + a0inv = base_gf->inverse.w32(base_gf, a0); + + d = base_gf->multiply.w32(base_gf, a1, a0inv); + + tmp = (base_gf->multiply.w32(base_gf, a1, a0inv) ^ base_gf->multiply.w32(base_gf, a0, a1inv) ^ h->prim_poly); + tmp = base_gf->inverse.w32(base_gf, tmp); + + d = base_gf->multiply.w32(base_gf, d, tmp); + + c0 = base_gf->multiply.w32(base_gf, (d^1), a0inv); + c1 = base_gf->multiply.w32(base_gf, d, a1inv); + } + + c = c0 | ((uint64_t)c1 << 32); + + return c; +} + +static +void +gf_w64_composite_multiply_region(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint32_t b0 = val & 0x00000000ffffffff; + uint32_t b1 = (val & 0xffffffff00000000) >> 32; + uint64_t *s64, *d64; + uint64_t *top; + uint64_t a0, a1, a1b1; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + + s64 = rd.s_start; + d64 = rd.d_start; + top = rd.d_top; + + if (xor) { + while (d64 < top) { + a0 = *s64 & 0x00000000ffffffff; + a1 = (*s64 & 0xffffffff00000000) >> 32; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d64 ^= ((uint64_t)(base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((uint64_t)(base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 32)); + s64++; + d64++; + } + } else { + while (d64 < top) { + a0 = *s64 & 0x00000000ffffffff; + a1 = (*s64 & 0xffffffff00000000) >> 32; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d64 = ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((uint64_t)(base_gf->multiply.w32(base_gf, a1, b0) ^ base_gf->multiply.w32(base_gf, a0, b1) ^ base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 32)); + s64++; + d64++; + } + } +} + +static +void +gf_w64_composite_multiply_region_alt(gf_t *gf, void *src, void *dest, gf_val_64_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + gf_val_32_t val0 = val & 0x00000000ffffffff; + gf_val_32_t val1 = (val & 0xffffffff00000000) >> 32; + uint8_t *slow, *shigh; + uint8_t *dlow, *dhigh, *top; + int sub_reg_size; + gf_region_data rd; + + if (!xor) { + memset(dest, 0, bytes); + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + slow = (uint8_t *) rd.s_start; + dlow = (uint8_t *) rd.d_start; + top = (uint8_t*) rd.d_top; + sub_reg_size = (top - dlow)/2; + shigh = slow + sub_reg_size; + dhigh = dlow + sub_reg_size; + + base_gf->multiply_region.w32(base_gf, slow, dlow, val0, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dlow, val1, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, slow, dhigh, val1, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, val0, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, shigh, dhigh, base_gf->multiply.w32(base_gf, h->prim_poly, val1), sub_reg_size, 1); + + gf_do_final_region_alignment(&rd); +} + + + +static +int gf_w64_composite_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (h->region_type & GF_REGION_ALTMAP) { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_composite_multiply_region_alt) + } else { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_composite_multiply_region) + } + + SET_FUNCTION(gf,multiply,w64,gf_w64_composite_multiply) + SET_FUNCTION(gf,divide,w64,NULL) + SET_FUNCTION(gf,inverse,w64,gf_w64_composite_inverse) + + return 1; +} + +#ifdef INTEL_SSSE3 +static + void +gf_w64_split_4_64_lazy_sse_altmap_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint64_t pp, v, *s64, *d64, *top; + __m128i si, tables[16][8], p[8], v0, mask1; + struct gf_split_4_64_lazy_data *ld; + uint8_t btable[16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 128); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + ld = (struct gf_split_4_64_lazy_data *) h->private; + + v = val; + for (i = 0; i < 16; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + for (j = 0; j < 8; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[i][k]; + ld->tables[i][k] >>= 8; + } + tables[i][j] = _mm_loadu_si128((__m128i *) btable); + } + } + + mask1 = _mm_set1_epi8(0xf); + + while (d64 != top) { + + if (xor) { + for (i = 0; i < 8; i++) p[i] = _mm_load_si128 ((__m128i *) (d64+i*2)); + } else { + for (i = 0; i < 8; i++) p[i] = _mm_setzero_si128(); + } + i = 0; + for (k = 0; k < 8; k++) { + v0 = _mm_load_si128((__m128i *) s64); + /* MM_PRINT8("v", v0); */ + s64 += 2; + + si = _mm_and_si128(v0, mask1); + + for (j = 0; j < 8; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + v0 = _mm_srli_epi32(v0, 4); + si = _mm_and_si128(v0, mask1); + for (j = 0; j < 8; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + } + for (i = 0; i < 8; i++) { + /* MM_PRINT8("v", p[i]); */ + _mm_store_si128((__m128i *) d64, p[i]); + d64 += 2; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#ifdef INTEL_SSE4 +static + void +gf_w64_split_4_64_lazy_sse_multiply_region(gf_t *gf, void *src, void *dest, uint64_t val, int bytes, int xor) +{ + gf_internal_t *h; + int i, j, k; + uint64_t pp, v, *s64, *d64, *top; + __m128i si, tables[16][8], p[8], st[8], mask1, mask8, mask16, t1; + struct gf_split_4_64_lazy_data *ld; + uint8_t btable[16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 128); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + ld = (struct gf_split_4_64_lazy_data *) h->private; + + v = val; + for (i = 0; i < 16; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + for (j = 0; j < 8; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[i][k]; + ld->tables[i][k] >>= 8; + } + tables[i][j] = _mm_loadu_si128((__m128i *) btable); + } + } + + mask1 = _mm_set1_epi8(0xf); + mask8 = _mm_set1_epi16(0xff); + mask16 = _mm_set1_epi32(0xffff); + + while (d64 != top) { + + for (i = 0; i < 8; i++) p[i] = _mm_setzero_si128(); + + for (k = 0; k < 8; k++) { + st[k] = _mm_load_si128((__m128i *) s64); + s64 += 2; + } + + for (k = 0; k < 4; k ++) { + st[k] = _mm_shuffle_epi32(st[k], _MM_SHUFFLE(3,1,2,0)); + st[k+4] = _mm_shuffle_epi32(st[k+4], _MM_SHUFFLE(2,0,3,1)); + t1 = _mm_blend_epi16(st[k], st[k+4], 0xf0); + st[k] = _mm_srli_si128(st[k], 8); + st[k+4] = _mm_slli_si128(st[k+4], 8); + st[k+4] = _mm_blend_epi16(st[k], st[k+4], 0xf0); + st[k] = t1; + } + +/* + printf("After pack pass 1\n"); + for (k = 0; k < 8; k++) { + MM_PRINT8("v", st[k]); + } + printf("\n"); + */ + + t1 = _mm_packus_epi32(_mm_and_si128(st[0], mask16), _mm_and_si128(st[2], mask16)); + st[2] = _mm_packus_epi32(_mm_srli_epi32(st[0], 16), _mm_srli_epi32(st[2], 16)); + st[0] = t1; + t1 = _mm_packus_epi32(_mm_and_si128(st[1], mask16), _mm_and_si128(st[3], mask16)); + st[3] = _mm_packus_epi32(_mm_srli_epi32(st[1], 16), _mm_srli_epi32(st[3], 16)); + st[1] = t1; + t1 = _mm_packus_epi32(_mm_and_si128(st[4], mask16), _mm_and_si128(st[6], mask16)); + st[6] = _mm_packus_epi32(_mm_srli_epi32(st[4], 16), _mm_srli_epi32(st[6], 16)); + st[4] = t1; + t1 = _mm_packus_epi32(_mm_and_si128(st[5], mask16), _mm_and_si128(st[7], mask16)); + st[7] = _mm_packus_epi32(_mm_srli_epi32(st[5], 16), _mm_srli_epi32(st[7], 16)); + st[5] = t1; + +/* + printf("After pack pass 2\n"); + for (k = 0; k < 8; k++) { + MM_PRINT8("v", st[k]); + } + printf("\n"); + */ + t1 = _mm_packus_epi16(_mm_and_si128(st[0], mask8), _mm_and_si128(st[1], mask8)); + st[1] = _mm_packus_epi16(_mm_srli_epi16(st[0], 8), _mm_srli_epi16(st[1], 8)); + st[0] = t1; + t1 = _mm_packus_epi16(_mm_and_si128(st[2], mask8), _mm_and_si128(st[3], mask8)); + st[3] = _mm_packus_epi16(_mm_srli_epi16(st[2], 8), _mm_srli_epi16(st[3], 8)); + st[2] = t1; + t1 = _mm_packus_epi16(_mm_and_si128(st[4], mask8), _mm_and_si128(st[5], mask8)); + st[5] = _mm_packus_epi16(_mm_srli_epi16(st[4], 8), _mm_srli_epi16(st[5], 8)); + st[4] = t1; + t1 = _mm_packus_epi16(_mm_and_si128(st[6], mask8), _mm_and_si128(st[7], mask8)); + st[7] = _mm_packus_epi16(_mm_srli_epi16(st[6], 8), _mm_srli_epi16(st[7], 8)); + st[6] = t1; + +/* + printf("After final pack pass 2\n"); + for (k = 0; k < 8; k++) { + MM_PRINT8("v", st[k]); + } + */ + i = 0; + for (k = 0; k < 8; k++) { + si = _mm_and_si128(st[k], mask1); + + for (j = 0; j < 8; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + st[k] = _mm_srli_epi32(st[k], 4); + si = _mm_and_si128(st[k], mask1); + for (j = 0; j < 8; j++) { + p[j] = _mm_xor_si128(p[j], _mm_shuffle_epi8(tables[i][j], si)); + } + i++; + } + + t1 = _mm_unpacklo_epi8(p[0], p[1]); + p[1] = _mm_unpackhi_epi8(p[0], p[1]); + p[0] = t1; + t1 = _mm_unpacklo_epi8(p[2], p[3]); + p[3] = _mm_unpackhi_epi8(p[2], p[3]); + p[2] = t1; + t1 = _mm_unpacklo_epi8(p[4], p[5]); + p[5] = _mm_unpackhi_epi8(p[4], p[5]); + p[4] = t1; + t1 = _mm_unpacklo_epi8(p[6], p[7]); + p[7] = _mm_unpackhi_epi8(p[6], p[7]); + p[6] = t1; + +/* + printf("After unpack pass 1:\n"); + for (i = 0; i < 8; i++) { + MM_PRINT8("v", p[i]); + } + */ + + t1 = _mm_unpacklo_epi16(p[0], p[2]); + p[2] = _mm_unpackhi_epi16(p[0], p[2]); + p[0] = t1; + t1 = _mm_unpacklo_epi16(p[1], p[3]); + p[3] = _mm_unpackhi_epi16(p[1], p[3]); + p[1] = t1; + t1 = _mm_unpacklo_epi16(p[4], p[6]); + p[6] = _mm_unpackhi_epi16(p[4], p[6]); + p[4] = t1; + t1 = _mm_unpacklo_epi16(p[5], p[7]); + p[7] = _mm_unpackhi_epi16(p[5], p[7]); + p[5] = t1; + +/* + printf("After unpack pass 2:\n"); + for (i = 0; i < 8; i++) { + MM_PRINT8("v", p[i]); + } + */ + + t1 = _mm_unpacklo_epi32(p[0], p[4]); + p[4] = _mm_unpackhi_epi32(p[0], p[4]); + p[0] = t1; + t1 = _mm_unpacklo_epi32(p[1], p[5]); + p[5] = _mm_unpackhi_epi32(p[1], p[5]); + p[1] = t1; + t1 = _mm_unpacklo_epi32(p[2], p[6]); + p[6] = _mm_unpackhi_epi32(p[2], p[6]); + p[2] = t1; + t1 = _mm_unpacklo_epi32(p[3], p[7]); + p[7] = _mm_unpackhi_epi32(p[3], p[7]); + p[3] = t1; + + if (xor) { + for (i = 0; i < 8; i++) { + t1 = _mm_load_si128((__m128i *) d64); + _mm_store_si128((__m128i *) d64, _mm_xor_si128(p[i], t1)); + d64 += 2; + } + } else { + for (i = 0; i < 8; i++) { + _mm_store_si128((__m128i *) d64, p[i]); + d64 += 2; + } + } + + } + + gf_do_final_region_alignment(&rd); +} +#endif + +#define GF_MULTBY_TWO(p) (((p) & GF_FIRST_BIT) ? (((p) << 1) ^ h->prim_poly) : (p) << 1); + +static +int gf_w64_split_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_split_4_64_lazy_data *d4; + struct gf_split_8_64_lazy_data *d8; + struct gf_split_8_8_data *d88; + struct gf_split_16_64_lazy_data *d16; + uint64_t p, basep; + int exp, i, j; + + h = (gf_internal_t *) gf->scratch; + + /* Defaults */ + + SET_FUNCTION(gf,multiply_region,w64,gf_w64_multiply_region_from_single) + + SET_FUNCTION(gf,multiply,w64,gf_w64_bytwo_p_multiply) + +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + if ((!(h->region_type & GF_REGION_NOSIMD) && + (h->arg1 == 64 || h->arg2 == 64)) || + h->mult_type == GF_MULT_DEFAULT){ + + if ((0xfffffffe00000000ULL & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w64,gf_w64_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_clm_multiply_region_from_single_2) + }else if((0xfffe000000000000ULL & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w64,gf_w64_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_clm_multiply_region_from_single_4) + }else{ + return 0; + } + } + } +#endif + + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + + /* Allen: set region pointers for default mult type. Single pointers are + * taken care of above (explicitly for sse, implicitly for no sse). */ + + if (h->mult_type == GF_MULT_DEFAULT) { +#if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + if (gf_cpu_supports_intel_sse4 || gf_cpu_supports_arm_neon) { + d4 = (struct gf_split_4_64_lazy_data *) h->private; + d4->last_value = 0; +#if defined(INTEL_SSE4) + if (gf_cpu_supports_intel_sse4) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_sse_multiply_region) +#elif defined(ARCH_AARCH64) + if (gf_cpu_supports_arm_neon) + gf_w64_neon_split_init(gf); +#endif + } else { +#endif + d8 = (struct gf_split_8_64_lazy_data *) h->private; + d8->last_value = 0; + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_8_64_lazy_multiply_region) +#if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + } +#endif + } + + if ((h->arg1 == 4 && h->arg2 == 64) || (h->arg1 == 64 && h->arg2 == 4)) { + d4 = (struct gf_split_4_64_lazy_data *) h->private; + d4->last_value = 0; + + if((h->region_type & GF_REGION_ALTMAP) && (h->region_type & GF_REGION_NOSIMD)) return 0; + if(h->region_type & GF_REGION_ALTMAP) + { + #ifdef INTEL_SSSE3 + if (gf_cpu_supports_intel_ssse3) { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_sse_altmap_multiply_region) + } else + #elif defined(ARCH_AARCH64) + if (gf_cpu_supports_arm_neon) { + gf_w64_neon_split_init(gf); + } else + #endif + return 0; + } + else //no altmap + { + #if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + if(gf_cpu_supports_intel_sse4 || gf_cpu_supports_arm_neon) { + if (h->region_type & GF_REGION_NOSIMD) { + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_multiply_region) + } else + #if defined(INTEL_SSE4) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_sse_multiply_region) + #elif defined(ARCH_AARCH64) + gf_w64_neon_split_init(gf); + #endif + } else { + #endif + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + } + #endif + } + } + if ((h->arg1 == 8 && h->arg2 == 64) || (h->arg1 == 64 && h->arg2 == 8)) { + d8 = (struct gf_split_8_64_lazy_data *) h->private; + d8->last_value = 0; + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_8_64_lazy_multiply_region) + } + if ((h->arg1 == 16 && h->arg2 == 64) || (h->arg1 == 64 && h->arg2 == 16)) { + d16 = (struct gf_split_16_64_lazy_data *) h->private; + d16->last_value = 0; + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_16_64_lazy_multiply_region) + } + if ((h->arg1 == 8 && h->arg2 == 8)) { + d88 = (struct gf_split_8_8_data *) h->private; + SET_FUNCTION(gf,multiply,w64,gf_w64_split_8_8_multiply) + + /* The performance of this guy sucks, so don't bother with a region op */ + + basep = 1; + for (exp = 0; exp < 15; exp++) { + for (j = 0; j < 256; j++) d88->tables[exp][0][j] = 0; + for (i = 0; i < 256; i++) d88->tables[exp][i][0] = 0; + d88->tables[exp][1][1] = basep; + for (i = 2; i < 256; i++) { + if (i&1) { + p = d88->tables[exp][i^1][1]; + d88->tables[exp][i][1] = p ^ basep; + } else { + p = d88->tables[exp][i>>1][1]; + d88->tables[exp][i][1] = GF_MULTBY_TWO(p); + } + } + for (i = 1; i < 256; i++) { + p = d88->tables[exp][i][1]; + for (j = 1; j < 256; j++) { + if (j&1) { + d88->tables[exp][i][j] = d88->tables[exp][i][j^1] ^ p; + } else { + d88->tables[exp][i][j] = GF_MULTBY_TWO(d88->tables[exp][i][j>>1]); + } + } + } + for (i = 0; i < 8; i++) basep = GF_MULTBY_TWO(basep); + } + } + return 1; +} + +int gf_w64_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + switch(mult_type) + { + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t); + break; + + case GF_MULT_DEFAULT: + + /* Allen: set the *local* arg1 and arg2, just for scratch size purposes, + * then fall through to split table scratch size code. */ + +#if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + if (gf_cpu_supports_intel_sse4 || gf_cpu_supports_arm_neon) { + arg1 = 64; + arg2 = 4; + } else { +#endif + arg1 = 64; + arg2 = 8; +#if defined(INTEL_SSE4) || defined(ARCH_AARCH64) + } +#endif + + case GF_MULT_SPLIT_TABLE: + if (arg1 == 8 && arg2 == 8) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_8_8_data) + 64; + } + if ((arg1 == 16 && arg2 == 64) || (arg2 == 16 && arg1 == 64)) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_16_64_lazy_data) + 64; + } + if ((arg1 == 8 && arg2 == 64) || (arg2 == 8 && arg1 == 64)) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_8_64_lazy_data) + 64; + } + + if ((arg1 == 64 && arg2 == 4) || (arg1 == 4 && arg2 == 64)) { + return sizeof(gf_internal_t) + sizeof(struct gf_split_4_64_lazy_data) + 64; + } + return 0; + case GF_MULT_GROUP: + return sizeof(gf_internal_t) + sizeof(struct gf_w64_group_data) + + sizeof(uint64_t) * (1 << arg1) + + sizeof(uint64_t) * (1 << arg2) + 64; + break; + case GF_MULT_COMPOSITE: + if (arg1 == 2) return sizeof(gf_internal_t) + 64; + return 0; + break; + default: + return 0; + } +} + +int gf_w64_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set default primitive polynomial / irreducible polynomial if needed */ + + /* Omitting the leftmost 1 as in w=32 */ + + if (h->prim_poly == 0) { + if (h->mult_type == GF_MULT_COMPOSITE) { + h->prim_poly = gf_composite_get_default_poly(h->base_gf); + if (h->prim_poly == 0) return 0; /* This shouldn't happen */ + } else { + h->prim_poly = 0x1b; + } + } + + SET_FUNCTION(gf,multiply,w64,NULL) + SET_FUNCTION(gf,divide,w64,NULL) + SET_FUNCTION(gf,inverse,w64,NULL) + SET_FUNCTION(gf,multiply_region,w64,NULL) + + switch(h->mult_type) { + case GF_MULT_CARRY_FREE: if (gf_w64_cfm_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w64_shift_init(gf) == 0) return 0; break; + case GF_MULT_COMPOSITE: if (gf_w64_composite_init(gf) == 0) return 0; break; + case GF_MULT_DEFAULT: + case GF_MULT_SPLIT_TABLE: if (gf_w64_split_init(gf) == 0) return 0; break; + case GF_MULT_GROUP: if (gf_w64_group_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w64_bytwo_init(gf) == 0) return 0; break; + default: return 0; + } + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w64,gf_w64_divide_from_inverse) + SET_FUNCTION(gf,inverse,w64,gf_w64_euclid) + } + + if (gf->inverse.w64 != NULL && gf->divide.w64 == NULL) { + SET_FUNCTION(gf,divide,w64,gf_w64_divide_from_inverse) + } + if (gf->inverse.w64 == NULL && gf->divide.w64 != NULL) { + SET_FUNCTION(gf,inverse,w64,gf_w64_inverse_from_divide) + } + + if (h->region_type == GF_REGION_CAUCHY) return 0; + + if (h->region_type & GF_REGION_ALTMAP) { + if (h->mult_type == GF_MULT_COMPOSITE) { + SET_FUNCTION(gf,extract_word,w64,gf_w64_composite_extract_word) + } else if (h->mult_type == GF_MULT_SPLIT_TABLE) { + SET_FUNCTION(gf,extract_word,w64,gf_w64_split_extract_word) + } + } else { + SET_FUNCTION(gf,extract_word,w64,gf_w64_extract_word) + } + + return 1; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_w8.c b/src/erasure-code/jerasure/gf-complete/src/gf_w8.c new file mode 100644 index 00000000..f647a31b --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_w8.c @@ -0,0 +1,2398 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_w8.c + * + * Routines for 8-bit Galois fields + */ + +#include "gf_int.h" +#include "gf_w8.h" +#include +#include +#include +#include "gf_cpu.h" + +#define AB2(ip, am1 ,am2, b, t1, t2) {\ + t1 = (b << 1) & am1;\ + t2 = b & am2; \ + t2 = ((t2 << 1) - (t2 >> (GF_FIELD_WIDTH-1))); \ + b = (t1 ^ (t2 & ip));} + +#define SSE_AB2(pp, m1 ,m2, va, t1, t2) {\ + t1 = _mm_and_si128(_mm_slli_epi64(va, 1), m1); \ + t2 = _mm_and_si128(va, m2); \ + t2 = _mm_sub_epi64 (_mm_slli_epi64(t2, 1), _mm_srli_epi64(t2, (GF_FIELD_WIDTH-1))); \ + va = _mm_xor_si128(t1, _mm_and_si128(t2, pp)); } + +#define MM_PRINT(s, r) { uint8_t blah[16], ii; printf("%-12s", s); _mm_storeu_si128((__m128i *)blah, r); for (ii = 0; ii < 16; ii += 2) printf(" %02x %02x", blah[15-ii], blah[14-ii]); printf("\n"); } + +static +inline +uint32_t gf_w8_inverse_from_divide (gf_t *gf, uint32_t a) +{ + return gf->divide.w32(gf, 1, a); +} + +static +inline +uint32_t gf_w8_divide_from_inverse (gf_t *gf, uint32_t a, uint32_t b) +{ + b = gf->inverse.w32(gf, b); + return gf->multiply.w32(gf, a, b); +} + +static +inline +uint32_t gf_w8_euclid (gf_t *gf, uint32_t b) +{ + uint32_t e_i, e_im1, e_ip1; + uint32_t d_i, d_im1, d_ip1; + uint32_t y_i, y_im1, y_ip1; + uint32_t c_i; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = 8; + for (d_i = d_im1; ((1 << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (1 << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + if (e_ip1 == 0) return 0; + while ((e_ip1 & (1 << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w32(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +static +gf_val_32_t gf_w8_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint8_t *r8; + + r8 = (uint8_t *) start; + return r8[index]; +} + +static +gf_val_32_t gf_w8_composite_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + int sub_size; + gf_internal_t *h; + uint8_t *r8, *top; + uint8_t a, b; + gf_region_data rd; + + h = (gf_internal_t *) gf->scratch; + gf_set_region_data(&rd, gf, start, start, bytes, 0, 0, 32); + r8 = (uint8_t *) start; + if (r8 + index < (uint8_t *) rd.d_start) return r8[index]; + if (r8 + index >= (uint8_t *) rd.d_top) return r8[index]; + index -= (((uint8_t *) rd.d_start) - r8); + r8 = (uint8_t *) rd.d_start; + top = (uint8_t *) rd.d_top; + sub_size = (top-r8)/2; + + a = h->base_gf->extract_word.w32(h->base_gf, r8, sub_size, index); + b = h->base_gf->extract_word.w32(h->base_gf, r8+sub_size, sub_size, index); + return (a | (b << 4)); +} + +static +inline +uint32_t gf_w8_matrix (gf_t *gf, uint32_t b) +{ + return gf_bitmatrix_inverse(b, 8, ((gf_internal_t *) (gf->scratch))->prim_poly); +} + + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w8_clm_multiply_2 (gf_t *gf, gf_val_32_t a8, gf_val_32_t b8) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a8, 0); + b = _mm_insert_epi32 (a, b8, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + /* Ben: Do prim_poly reduction twice. We are guaranteed that we will only + have to do the reduction at most twice, because (w-2)/z == 2. Where + z is equal to the number of zeros after the leading 1 + + _mm_clmulepi64_si128 is the carryless multiply operation. Here + _mm_srli_si128 shifts the result to the right by 1 byte. This allows + us to multiply the prim_poly by the leading bits of the result. We + then xor the result of that operation back with the result.*/ + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w8_clm_multiply_3 (gf_t *gf, gf_val_32_t a8, gf_val_32_t b8) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a8, 0); + b = _mm_insert_epi32 (a, b8, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +inline +gf_val_32_t +gf_w8_clm_multiply_4 (gf_t *gf, gf_val_32_t a8, gf_val_32_t b8) +{ + gf_val_32_t rv = 0; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + a = _mm_insert_epi32 (_mm_setzero_si128(), a8, 0); + b = _mm_insert_epi32 (a, b8, 0); + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + /* Do the initial multiply */ + + result = _mm_clmulepi64_si128 (a, b, 0); + + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + + /* Extracts 32 bit value from result. */ + rv = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + + return rv; +} +#endif + + +static +void +gf_w8_multiply_region_from_single(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int + xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) { + while (d8 < ((uint8_t *) rd.d_top)) { + *d8 ^= gf->multiply.w32(gf, val, *s8); + d8++; + s8++; + } + } else { + while (d8 < ((uint8_t *) rd.d_top)) { + *d8 = gf->multiply.w32(gf, val, *s8); + d8++; + s8++; + } + } + gf_do_final_region_alignment(&rd); +} + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w8_clm_multiply_region_from_single_2(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int + xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } else { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w8_clm_multiply_region_from_single_3(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int + xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } else { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +#if defined(INTEL_SSE4_PCLMUL) +static +void +gf_w8_clm_multiply_region_from_single_4(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int + xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + __m128i a, b; + __m128i result; + __m128i prim_poly; + __m128i w; + gf_internal_t * h = gf->scratch; + + prim_poly = _mm_set_epi32(0, 0, 0, (uint32_t)(h->prim_poly & 0x1ffULL)); + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + a = _mm_insert_epi32 (_mm_setzero_si128(), val, 0); + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 ^= ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } else { + while (d8 < ((uint8_t *) rd.d_top)) { + b = _mm_insert_epi32 (a, (gf_val_32_t)(*s8), 0); + result = _mm_clmulepi64_si128 (a, b, 0); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + w = _mm_clmulepi64_si128 (prim_poly, _mm_srli_si128 (result, 1), 0); + result = _mm_xor_si128 (result, w); + *d8 = ((gf_val_32_t)_mm_extract_epi32(result, 0)); + d8++; + s8++; + } + } + gf_do_final_region_alignment(&rd); +} +#endif + +/* ------------------------------------------------------------ +IMPLEMENTATION: SHIFT: + +JSP: The world's dumbest multiplication algorithm. I only +include it for completeness. It does have the feature that it requires no +extra memory. + */ + +static +inline + uint32_t +gf_w8_shift_multiply (gf_t *gf, uint32_t a8, uint32_t b8) +{ + uint16_t product, i, pp, a, b; + gf_internal_t *h; + + a = a8; + b = b8; + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + product = 0; + + for (i = 0; i < GF_FIELD_WIDTH; i++) { + if (a & (1 << i)) product ^= (b << i); + } + for (i = (GF_FIELD_WIDTH*2-2); i >= GF_FIELD_WIDTH; i--) { + if (product & (1 << i)) product ^= (pp << (i-GF_FIELD_WIDTH)); + } + return product; +} + +static +int gf_w8_cfm_init(gf_t *gf) +{ +#if defined(INTEL_SSE4_PCLMUL) + if (gf_cpu_supports_intel_pclmul) { + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if ((0xe0 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_clm_multiply_region_from_single_2) + }else if ((0xc0 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_clm_multiply_3) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_clm_multiply_region_from_single_3) + }else if ((0x80 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_clm_multiply_region_from_single_4) + }else{ + return 0; + } + return 1; + } +#elif defined(ARM_NEON) + if (gf_cpu_supports_arm_neon) { + return gf_w8_neon_cfm_init(gf); + } +#endif + + return 0; + +} + +static +int gf_w8_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_w8_shift_multiply) /* The others will be set automatically */ + return 1; +} + +/* ------------------------------------------------------------ +IMPLEMENTATION: LOG_TABLE: + +JSP: Kevin wrote this, and I'm converting it to my structure. +*/ + +static +inline + uint32_t +gf_w8_logzero_multiply (gf_t *gf, uint32_t a, uint32_t b) +{ + struct gf_w8_logzero_table_data *ltd; + + ltd = (struct gf_w8_logzero_table_data *) ((gf_internal_t *) gf->scratch)->private; + return ltd->antilog_tbl[ltd->log_tbl[a] + ltd->log_tbl[b]]; +} + +static +inline + uint32_t +gf_w8_logzero_divide (gf_t *gf, uint32_t a, uint32_t b) +{ + struct gf_w8_logzero_table_data *ltd; + + ltd = (struct gf_w8_logzero_table_data *) ((gf_internal_t *) gf->scratch)->private; + return ltd->div_tbl[ltd->log_tbl[a] - ltd->log_tbl[b]]; +} + +static +inline + uint32_t +gf_w8_logzero_small_multiply (gf_t *gf, uint32_t a, uint32_t b) +{ + struct gf_w8_logzero_small_table_data *std; + + std = (struct gf_w8_logzero_small_table_data *) ((gf_internal_t *) gf->scratch)->private; + if (b == 0) return 0; + return std->antilog_tbl[std->log_tbl[a] + std->log_tbl[b]]; +} + +static +inline + uint32_t +gf_w8_logzero_small_divide (gf_t *gf, uint32_t a, uint32_t b) +{ + struct gf_w8_logzero_small_table_data *std; + + std = (struct gf_w8_logzero_small_table_data *) ((gf_internal_t *) gf->scratch)->private; + return std->div_tbl[std->log_tbl[a] - std->log_tbl[b]]; +} + +static +inline + uint32_t +gf_w8_log_multiply (gf_t *gf, uint32_t a, uint32_t b) +{ + struct gf_w8_logtable_data *ltd; + + ltd = (struct gf_w8_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (a == 0 || b == 0) ? 0 : ltd->antilog_tbl[(unsigned)(ltd->log_tbl[a] + ltd->log_tbl[b])]; +} + +static +inline + uint32_t +gf_w8_log_divide (gf_t *gf, uint32_t a, uint32_t b) +{ + int log_sum = 0; + struct gf_w8_logtable_data *ltd; + + if (a == 0 || b == 0) return 0; + ltd = (struct gf_w8_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + + log_sum = ltd->log_tbl[a] - ltd->log_tbl[b] + (GF_MULT_GROUP_SIZE); + return (ltd->antilog_tbl[log_sum]); +} + +static + uint32_t +gf_w8_log_inverse (gf_t *gf, uint32_t a) +{ + struct gf_w8_logtable_data *ltd; + + ltd = (struct gf_w8_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + return (ltd->inv_tbl[a]); +} + +static + uint32_t +gf_w8_logzero_inverse (gf_t *gf, uint32_t a) +{ + struct gf_w8_logzero_table_data *ltd; + + ltd = (struct gf_w8_logzero_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (ltd->inv_tbl[a]); +} + +static + uint32_t +gf_w8_logzero_small_inverse (gf_t *gf, uint32_t a) +{ + struct gf_w8_logzero_small_table_data *std; + + std = (struct gf_w8_logzero_small_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (std->inv_tbl[a]); +} + +static + void +gf_w8_log_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + int i; + uint8_t lv; + uint8_t *s8, *d8; + struct gf_w8_logtable_data *ltd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + ltd = (struct gf_w8_logtable_data *) ((gf_internal_t *) gf->scratch)->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + lv = ltd->log_tbl[val]; + + if (xor) { + for (i = 0; i < bytes; i++) { + d8[i] ^= (s8[i] == 0 ? 0 : ltd->antilog_tbl[lv + ltd->log_tbl[s8[i]]]); + } + } else { + for (i = 0; i < bytes; i++) { + d8[i] = (s8[i] == 0 ? 0 : ltd->antilog_tbl[lv + ltd->log_tbl[s8[i]]]); + } + } +} + +static + void +gf_w8_logzero_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor) +{ + int i; + uint8_t lv; + uint8_t *s8, *d8; + struct gf_w8_logzero_table_data *ltd; + struct gf_w8_logzero_small_table_data *std; + short *log; + uint8_t *alt; + gf_internal_t *h; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + + if (h->arg1 == 1) { + std = (struct gf_w8_logzero_small_table_data *) h->private; + log = std->log_tbl; + alt = std->antilog_tbl; + } else { + ltd = (struct gf_w8_logzero_table_data *) h->private; + log = ltd->log_tbl; + alt = ltd->antilog_tbl; + } + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + lv = log[val]; + + if (xor) { + for (i = 0; i < bytes; i++) { + d8[i] ^= (alt[lv + log[s8[i]]]); + } + } else { + for (i = 0; i < bytes; i++) { + d8[i] = (alt[lv + log[s8[i]]]); + } + } +} + + static +int gf_w8_log_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w8_logtable_data *ltd = NULL; + struct gf_w8_logzero_table_data *ztd = NULL; + struct gf_w8_logzero_small_table_data *std = NULL; + uint8_t *alt; + uint8_t *inv; + int i, b; + int check = 0; + + h = (gf_internal_t *) gf->scratch; + if (h->mult_type == GF_MULT_LOG_TABLE) { + ltd = h->private; + alt = ltd->antilog_tbl; + inv = ltd->inv_tbl; + } else if (h->mult_type == GF_MULT_LOG_ZERO) { + std = h->private; + alt = std->antilog_tbl; + std->div_tbl = (alt + 255); + inv = std->inv_tbl; + } else { + ztd = h->private; + alt = ztd->antilog_tbl; + ztd->inv_tbl = (alt + 512 + 256); + ztd->div_tbl = (alt + 255); + inv = ztd->inv_tbl; + } + + for (i = 0; i < GF_MULT_GROUP_SIZE+1; i++) { + if (h->mult_type == GF_MULT_LOG_TABLE) + ltd->log_tbl[i] = 0; + else if (h->mult_type == GF_MULT_LOG_ZERO) + std->log_tbl[i] = 0; + else + ztd->log_tbl[i] = 0; + } + + if (h->mult_type == GF_MULT_LOG_TABLE) { + ltd->log_tbl[0] = 0; + } else if (h->mult_type == GF_MULT_LOG_ZERO) { + std->log_tbl[0] = 510; + } else { + ztd->log_tbl[0] = 512; + } + + b = 1; + for (i = 0; i < GF_MULT_GROUP_SIZE; i++) { + if (h->mult_type == GF_MULT_LOG_TABLE) { + if (ltd->log_tbl[b] != 0) check = 1; + ltd->log_tbl[b] = i; + } else if (h->mult_type == GF_MULT_LOG_ZERO) { + if (std->log_tbl[b] != 0) check = 1; + std->log_tbl[b] = i; + } else { + if (ztd->log_tbl[b] != 0) check = 1; + ztd->log_tbl[b] = i; + } + alt[i] = b; + alt[i+GF_MULT_GROUP_SIZE] = b; + b <<= 1; + if (b & GF_FIELD_SIZE) { + b = b ^ h->prim_poly; + } + } + if (check) { + _gf_errno = GF_E_LOGPOLY; + return 0; + } + + if (h->mult_type == GF_MULT_LOG_ZERO) bzero(alt+510, 255); + + if (h->mult_type == GF_MULT_LOG_ZERO_EXT) { + bzero(alt+512, 255); + alt[512+512] = 0; + } + + inv[0] = 0; /* Not really, but we need to fill it with something */ + i = 1; + b = GF_MULT_GROUP_SIZE; + do { + inv[i] = alt[b]; + i <<= 1; + if (i & (1 << 8)) i ^= h->prim_poly; + b--; + } while (i != 1); + + if (h->mult_type == GF_MULT_LOG_TABLE) { + SET_FUNCTION(gf,inverse,w32,gf_w8_log_inverse) + SET_FUNCTION(gf,divide,w32,gf_w8_log_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_log_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_log_multiply_region) + } else if (h->mult_type == GF_MULT_LOG_ZERO) { + SET_FUNCTION(gf,inverse,w32,gf_w8_logzero_small_inverse) + SET_FUNCTION(gf,divide,w32,gf_w8_logzero_small_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_logzero_small_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_logzero_multiply_region) + } else { + SET_FUNCTION(gf,inverse,w32,gf_w8_logzero_inverse) + SET_FUNCTION(gf,divide,w32,gf_w8_logzero_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_logzero_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_logzero_multiply_region) + } + return 1; +} + +/* ------------------------------------------------------------ +IMPLEMENTATION: FULL_TABLE: + +JSP: Kevin wrote this, and I'm converting it to my structure. + */ + +static + gf_val_32_t +gf_w8_table_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_single_table_data *ftd; + + ftd = (struct gf_w8_single_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->multtable[a][b]); +} + +static + gf_val_32_t +gf_w8_table_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_single_table_data *ftd; + + ftd = (struct gf_w8_single_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->divtable[a][b]); +} + +static + gf_val_32_t +gf_w8_default_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_default_data *ftd; + + ftd = (struct gf_w8_default_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->multtable[a][b]); +} + +#if defined(INTEL_SSSE3) || defined(ARM_NEON) +static + gf_val_32_t +gf_w8_default_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_default_data *ftd; + + ftd = (struct gf_w8_default_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->divtable[a][b]); +} +#endif + +static + gf_val_32_t +gf_w8_double_table_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_double_table_data *ftd; + + ftd = (struct gf_w8_double_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->mult[a][b]); +} + +static + gf_val_32_t +gf_w8_double_table_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_double_table_data *ftd; + + ftd = (struct gf_w8_double_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->div[a][b]); +} + +static + void +gf_w8_double_table_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint16_t *base; + uint32_t b, c, vc, vb; + gf_internal_t *h; + struct gf_w8_double_table_data *dtd; + struct gf_w8_double_table_lazy_data *ltd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) (gf->scratch); + if (h->region_type & GF_REGION_LAZY) { + ltd = (struct gf_w8_double_table_lazy_data *) h->private; + base = ltd->mult; + for (b = 0; b < GF_FIELD_SIZE; b++) { + vb = (ltd->smult[val][b] << 8); + for (c = 0; c < GF_FIELD_SIZE; c++) { + vc = ltd->smult[val][c]; + base[(b << 8)| c] = (vb | vc); + } + } + + } else { + dtd = (struct gf_w8_double_table_data *) h->private; + base = &(dtd->mult[val][0]); + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + gf_two_byte_region_table_multiply(&rd, base); + gf_do_final_region_alignment(&rd); +} + +static + gf_val_32_t +gf_w8_double_table_lazy_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_double_table_lazy_data *ftd; + + ftd = (struct gf_w8_double_table_lazy_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->smult[a][b]); +} + +static + gf_val_32_t +gf_w8_double_table_lazy_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_double_table_lazy_data *ftd; + + ftd = (struct gf_w8_double_table_lazy_data *) ((gf_internal_t *) gf->scratch)->private; + return (ftd->div[a][b]); +} + +static + void +gf_w8_table_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + struct gf_w8_single_table_data *ftd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + ftd = (struct gf_w8_single_table_data *) ((gf_internal_t *) gf->scratch)->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + if (xor) { + for (i = 0; i < bytes; i++) { + d8[i] ^= ftd->multtable[s8[i]][val]; + } + } else { + for (i = 0; i < bytes; i++) { + d8[i] = ftd->multtable[s8[i]][val]; + } + } +} + +#ifdef INTEL_SSSE3 +static + void +gf_w8_split_multiply_region_sse(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint8_t *bh, *bl, *sptr, *dptr; + __m128i loset, t1, r, va, mth, mtl; + struct gf_w8_half_table_data *htd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + htd = (struct gf_w8_half_table_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + bh = (uint8_t *) htd->high; + bh += (val << 4); + bl = (uint8_t *) htd->low; + bl += (val << 4); + + sptr = rd.s_start; + dptr = rd.d_start; + + mth = _mm_loadu_si128 ((__m128i *)(bh)); + mtl = _mm_loadu_si128 ((__m128i *)(bl)); + loset = _mm_set1_epi8 (0x0f); + + if (xor) { + while (sptr < (uint8_t *) rd.s_top) { + va = _mm_load_si128 ((__m128i *)(sptr)); + t1 = _mm_and_si128 (loset, va); + r = _mm_shuffle_epi8 (mtl, t1); + va = _mm_srli_epi64 (va, 4); + t1 = _mm_and_si128 (loset, va); + r = _mm_xor_si128 (r, _mm_shuffle_epi8 (mth, t1)); + va = _mm_load_si128 ((__m128i *)(dptr)); + r = _mm_xor_si128 (r, va); + _mm_store_si128 ((__m128i *)(dptr), r); + dptr += 16; + sptr += 16; + } + } else { + while (sptr < (uint8_t *) rd.s_top) { + va = _mm_load_si128 ((__m128i *)(sptr)); + t1 = _mm_and_si128 (loset, va); + r = _mm_shuffle_epi8 (mtl, t1); + va = _mm_srli_epi64 (va, 4); + t1 = _mm_and_si128 (loset, va); + r = _mm_xor_si128 (r, _mm_shuffle_epi8 (mth, t1)); + _mm_store_si128 ((__m128i *)(dptr), r); + dptr += 16; + sptr += 16; + } + } + + gf_do_final_region_alignment(&rd); +} +#endif + + +/* ------------------------------------------------------------ +IMPLEMENTATION: FULL_TABLE: + */ + +static + gf_val_32_t +gf_w8_split_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + struct gf_w8_half_table_data *htd; + htd = (struct gf_w8_half_table_data *) ((gf_internal_t *) gf->scratch)->private; + + return htd->high[b][a>>4] ^ htd->low[b][a&0xf]; +} + +static + void +gf_w8_split_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + struct gf_w8_half_table_data *htd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + htd = (struct gf_w8_half_table_data *) ((gf_internal_t *) gf->scratch)->private; + s8 = (uint8_t *) src; + d8 = (uint8_t *) dest; + + if (xor) { + for (i = 0; i < bytes; i++) { + d8[i] ^= (htd->high[val][s8[i]>>4] ^ htd->low[val][s8[i]&0xf]); + } + } else { + for (i = 0; i < bytes; i++) { + d8[i] = (htd->high[val][s8[i]>>4] ^ htd->low[val][s8[i]&0xf]); + } + } +} + + + static +int gf_w8_split_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w8_half_table_data *htd; + int a, b; + + h = (gf_internal_t *) gf->scratch; + htd = (struct gf_w8_half_table_data *)h->private; + + bzero(htd->high, sizeof(uint8_t)*GF_FIELD_SIZE*GF_HALF_SIZE); + bzero(htd->low, sizeof(uint8_t)*GF_FIELD_SIZE*GF_HALF_SIZE); + + for (a = 1; a < GF_FIELD_SIZE; a++) { + for (b = 1; b < GF_HALF_SIZE; b++) { + htd->low[a][b] = gf_w8_shift_multiply(gf,a,b); + htd->high[a][b] = gf_w8_shift_multiply(gf,a,b<<4); + } + } + + SET_FUNCTION(gf,multiply,w32,gf_w8_split_multiply) + + #if defined(INTEL_SSSE3) + if (gf_cpu_supports_intel_ssse3 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_split_multiply_region_sse) + } else { + #elif defined(ARM_NEON) + if (gf_cpu_supports_arm_neon && !(h->region_type & GF_REGION_NOSIMD)) { + gf_w8_neon_split_init(gf); + } else { + #endif + SET_FUNCTION(gf,multiply_region,w32,gf_w8_split_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; + #if defined(INTEL_SSSE3) || defined(ARM_NEON) + } + #endif + + return 1; +} + +/* JSP: This is disgusting, but it is what it is. If there is no SSE, + then the default is equivalent to single table. If there is SSE, then + we use the "gf_w8_default_data" which is a hybrid of SPLIT & TABLE. */ + +static +int gf_w8_table_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w8_single_table_data *ftd = NULL; + struct gf_w8_double_table_data *dtd = NULL; + struct gf_w8_double_table_lazy_data *ltd = NULL; + struct gf_w8_default_data *dd = NULL; + int a, b, c, prod, scase; + + h = (gf_internal_t *) gf->scratch; + + if (h->mult_type == GF_MULT_DEFAULT && + (gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon)) { + dd = (struct gf_w8_default_data *)h->private; + scase = 3; + bzero(dd->high, sizeof(uint8_t) * GF_FIELD_SIZE * GF_HALF_SIZE); + bzero(dd->low, sizeof(uint8_t) * GF_FIELD_SIZE * GF_HALF_SIZE); + bzero(dd->divtable, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(dd->multtable, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + } else if (h->mult_type == GF_MULT_DEFAULT || + h->region_type == 0 || (h->region_type & GF_REGION_CAUCHY)) { + ftd = (struct gf_w8_single_table_data *)h->private; + bzero(ftd->divtable, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(ftd->multtable, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + scase = 0; + } else if (h->region_type == GF_REGION_DOUBLE_TABLE) { + dtd = (struct gf_w8_double_table_data *)h->private; + bzero(dtd->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(dtd->mult, sizeof(uint16_t) * GF_FIELD_SIZE * GF_FIELD_SIZE * GF_FIELD_SIZE); + scase = 1; + } else if (h->region_type == (GF_REGION_DOUBLE_TABLE | GF_REGION_LAZY)) { + ltd = (struct gf_w8_double_table_lazy_data *)h->private; + bzero(ltd->div, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + bzero(ltd->smult, sizeof(uint8_t) * GF_FIELD_SIZE * GF_FIELD_SIZE); + scase = 2; + } else { + fprintf(stderr, "Internal error in gf_w8_table_init\n"); + assert(0); + } + + for (a = 1; a < GF_FIELD_SIZE; a++) { + for (b = 1; b < GF_FIELD_SIZE; b++) { + prod = gf_w8_shift_multiply(gf,a,b); + switch (scase) { + case 0: + ftd->multtable[a][b] = prod; + ftd->divtable[prod][b] = a; + break; + case 1: + dtd->div[prod][b] = a; + for (c = 0; c < GF_FIELD_SIZE; c++) { + dtd->mult[a][(c<<8)|b] |= prod; + dtd->mult[a][(b<<8)|c] |= (prod<<8); + } + break; + case 2: + ltd->div[prod][b] = a; + ltd->smult[a][b] = prod; + break; + case 3: + dd->multtable[a][b] = prod; + dd->divtable[prod][b] = a; + if ((b & 0xf) == b) { dd->low[a][b] = prod; } + if ((b & 0xf0) == b) { dd->high[a][b>>4] = prod; } + break; + } + } + } + + SET_FUNCTION(gf,inverse,w32,NULL) /* Will set from divide */ + switch (scase) { + case 0: + SET_FUNCTION(gf,divide,w32,gf_w8_table_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_table_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_table_multiply_region) + break; + case 1: + SET_FUNCTION(gf,divide,w32,gf_w8_double_table_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_double_table_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_double_table_multiply_region) + break; + case 2: + SET_FUNCTION(gf,divide,w32,gf_w8_double_table_lazy_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_double_table_lazy_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_double_table_multiply_region) + break; + case 3: +#if defined(INTEL_SSSE3) || defined(ARM_NEON) + if (gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon) { + SET_FUNCTION(gf,divide,w32,gf_w8_default_divide) + SET_FUNCTION(gf,multiply,w32,gf_w8_default_multiply) +#if defined(INTEL_SSSE3) + if (gf_cpu_supports_intel_ssse3) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_split_multiply_region_sse) + } +#elif defined(ARM_NEON) + if (gf_cpu_supports_arm_neon) { + gf_w8_neon_split_init(gf); + } +#endif + } +#endif + break; + } + return 1; +} + +static + void +gf_w8_composite_multiply_region_alt(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t val0 = val & 0x0f; + uint8_t val1 = (val & 0xf0) >> 4; + gf_region_data rd; + int sub_reg_size; + + if (val == 0) { + if (xor) return; + bzero(dest, bytes); + return; + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + sub_reg_size = ((uint8_t *)rd.d_top - (uint8_t *)rd.d_start) / 2; + + base_gf->multiply_region.w32(base_gf, rd.s_start, rd.d_start, val0, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, (uint8_t *)rd.s_start+sub_reg_size, rd.d_start, val1, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, rd.s_start, (uint8_t *)rd.d_start+sub_reg_size, val1, sub_reg_size, xor); + base_gf->multiply_region.w32(base_gf, (uint8_t *)rd.s_start+sub_reg_size, (uint8_t *)rd.d_start+sub_reg_size, val0, sub_reg_size, 1); + base_gf->multiply_region.w32(base_gf, (uint8_t *)rd.s_start+sub_reg_size, (uint8_t *)rd.d_start+sub_reg_size, base_gf->multiply.w32(base_gf, h->prim_poly, val1), sub_reg_size, 1); + + gf_do_final_region_alignment(&rd); +} + +static +gf_val_32_t +gf_w8_composite_multiply_recursive(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t b0 = b & 0x0f; + uint8_t b1 = (b & 0xf0) >> 4; + uint8_t a0 = a & 0x0f; + uint8_t a1 = (a & 0xf0) >> 4; + uint8_t a1b1; + + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + return ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ + base_gf->multiply.w32(base_gf, a0, b1) ^ + base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 4)); +} + +static +gf_val_32_t +gf_w8_composite_multiply_inline(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint8_t b0 = b & 0x0f; + uint8_t b1 = (b & 0xf0) >> 4; + uint8_t a0 = a & 0x0f; + uint8_t a1 = (a & 0xf0) >> 4; + uint8_t a1b1, *mt; + struct gf_w8_composite_data *cd; + + cd = (struct gf_w8_composite_data *) h->private; + mt = cd->mult_table; + + a1b1 = GF_W4_INLINE_MULTDIV(mt, a1, b1); + + return ((GF_W4_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | + ((GF_W4_INLINE_MULTDIV(mt, a1, b0) ^ + GF_W4_INLINE_MULTDIV(mt, a0, b1) ^ + GF_W4_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 4)); +} + +/* + * Composite field division trick (explained in 2007 tech report) + * + * Compute a / b = a*b^-1, where p(x) = x^2 + sx + 1 + * + * let c = b^-1 + * + * c*b = (s*b1c1+b1c0+b0c1)x+(b1c1+b0c0) + * + * want (s*b1c1+b1c0+b0c1) = 0 and (b1c1+b0c0) = 1 + * + * let d = b1c1 and d+1 = b0c0 + * + * solve s*b1c1+b1c0+b0c1 = 0 + * + * solution: d = (b1b0^-1)(b1b0^-1+b0b1^-1+s)^-1 + * + * c0 = (d+1)b0^-1 + * c1 = d*b1^-1 + * + * a / b = a * c + */ + +static +gf_val_32_t +gf_w8_composite_inverse(gf_t *gf, gf_val_32_t a) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t a0 = a & 0x0f; + uint8_t a1 = (a & 0xf0) >> 4; + uint8_t c0, c1, c, d, tmp; + uint8_t a0inv, a1inv; + + if (a0 == 0) { + a1inv = base_gf->inverse.w32(base_gf, a1) & 0xf; + c0 = base_gf->multiply.w32(base_gf, a1inv, h->prim_poly); + c1 = a1inv; + } else if (a1 == 0) { + c0 = base_gf->inverse.w32(base_gf, a0); + c1 = 0; + } else { + a1inv = base_gf->inverse.w32(base_gf, a1) & 0xf; + a0inv = base_gf->inverse.w32(base_gf, a0) & 0xf; + + d = base_gf->multiply.w32(base_gf, a1, a0inv) & 0xf; + + tmp = (base_gf->multiply.w32(base_gf, a1, a0inv) ^ base_gf->multiply.w32(base_gf, a0, a1inv) ^ h->prim_poly) & 0xf; + tmp = base_gf->inverse.w32(base_gf, tmp) & 0xf; + + d = base_gf->multiply.w32(base_gf, d, tmp) & 0xf; + + c0 = base_gf->multiply.w32(base_gf, (d^1), a0inv) & 0xf; + c1 = base_gf->multiply.w32(base_gf, d, a1inv) & 0xf; + } + + c = c0 | (c1 << 4); + + return c; +} + +static +void +gf_w8_composite_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + gf_t *base_gf = h->base_gf; + uint8_t b0 = val & 0x0f; + uint8_t b1 = (val & 0xf0) >> 4; + uint8_t *s8; + uint8_t *d8; + uint8_t *mt; + uint8_t a0, a1, a1b1; + struct gf_w8_composite_data *cd; + + cd = (struct gf_w8_composite_data *) h->private; + + if (val == 0) { + if (xor) return; + bzero(dest, bytes); + return; + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 1); + gf_do_initial_region_alignment(&rd); + + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + mt = cd->mult_table; + if (mt == NULL) { + if (xor) { + while (d8 < (uint8_t *) rd.d_top) { + a0 = *s8 & 0x0f; + a1 = (*s8 & 0xf0) >> 4; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d8 ^= ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ + base_gf->multiply.w32(base_gf, a0, b1) ^ + base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 4)); + s8++; + d8++; + } + } else { + while (d8 < (uint8_t *) rd.d_top) { + a0 = *s8 & 0x0f; + a1 = (*s8 & 0xf0) >> 4; + a1b1 = base_gf->multiply.w32(base_gf, a1, b1); + + *d8 = ((base_gf->multiply.w32(base_gf, a0, b0) ^ a1b1) | + ((base_gf->multiply.w32(base_gf, a1, b0) ^ + base_gf->multiply.w32(base_gf, a0, b1) ^ + base_gf->multiply.w32(base_gf, a1b1, h->prim_poly)) << 4)); + s8++; + d8++; + } + } + } else { + if (xor) { + while (d8 < (uint8_t *) rd.d_top) { + a0 = *s8 & 0x0f; + a1 = (*s8 & 0xf0) >> 4; + a1b1 = GF_W4_INLINE_MULTDIV(mt, a1, b1); + + *d8 ^= ((GF_W4_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | + ((GF_W4_INLINE_MULTDIV(mt, a1, b0) ^ + GF_W4_INLINE_MULTDIV(mt, a0, b1) ^ + GF_W4_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 4)); + s8++; + d8++; + } + } else { + while (d8 < (uint8_t *) rd.d_top) { + a0 = *s8 & 0x0f; + a1 = (*s8 & 0xf0) >> 4; + a1b1 = GF_W4_INLINE_MULTDIV(mt, a1, b1); + + *d8 = ((GF_W4_INLINE_MULTDIV(mt, a0, b0) ^ a1b1) | + ((GF_W4_INLINE_MULTDIV(mt, a1, b0) ^ + GF_W4_INLINE_MULTDIV(mt, a0, b1) ^ + GF_W4_INLINE_MULTDIV(mt, a1b1, h->prim_poly)) << 4)); + s8++; + d8++; + } + } + } + gf_do_final_region_alignment(&rd); + return; +} + +static +int gf_w8_composite_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + struct gf_w8_composite_data *cd; + + if (h->base_gf == NULL) return 0; + + cd = (struct gf_w8_composite_data *) h->private; + cd->mult_table = gf_w4_get_mult_table(h->base_gf); + + if (h->region_type & GF_REGION_ALTMAP) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_composite_multiply_region_alt) + } else { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_composite_multiply_region) + } + + if (cd->mult_table == NULL) { + SET_FUNCTION(gf,multiply,w32,gf_w8_composite_multiply_recursive) + } else { + SET_FUNCTION(gf,multiply,w32,gf_w8_composite_multiply_inline) + } + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,gf_w8_composite_inverse) + + return 1; +} + +static +inline + gf_val_32_t +gf_w8_bytwo_p_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + + prod = 0; + pmask = 0x80; + amask = 0x80; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + +static +inline + gf_val_32_t +gf_w8_bytwo_b_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = 0x80; + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static + void +gf_w8_bytwo_p_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, prod, amask; + gf_region_data rd; + struct gf_w8_bytwo_data *btd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w8_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 8); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + if (xor) { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x80; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 ^= prod; + d64++; + s64++; + } + } else { + while (s64 < (uint64_t *) rd.s_top) { + prod = 0; + amask = 0x80; + ta = *s64; + while (amask != 0) { + AB2(btd->prim_poly, btd->mask1, btd->mask2, prod, t1, t2); + if (val & amask) prod ^= ta; + amask >>= 1; + } + *d64 = prod; + d64++; + s64++; + } + } + gf_do_final_region_alignment(&rd); +} + +#define BYTWO_P_ONESTEP {\ + SSE_AB2(pp, m1 ,m2, prod, t1, t2); \ + t1 = _mm_and_si128(v, one); \ + t1 = _mm_sub_epi8(t1, one); \ + t1 = _mm_and_si128(t1, ta); \ + prod = _mm_xor_si128(prod, t1); \ + v = _mm_srli_epi64(v, 1); } + +#ifdef INTEL_SSE2 +static + void +gf_w8_bytwo_p_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int i; + uint8_t *s8, *d8; + uint8_t vrev; + __m128i pp, m1, m2, ta, prod, t1, t2, tp, one, v; + struct gf_w8_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + btd = (struct gf_w8_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + vrev = 0; + for (i = 0; i < 8; i++) { + vrev <<= 1; + if (!(val & (1 << i))) vrev |= 1; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + one = _mm_set1_epi8(1); + + while (d8 < (uint8_t *) rd.d_top) { + prod = _mm_setzero_si128(); + v = _mm_set1_epi8(vrev); + ta = _mm_load_si128((__m128i *) s8); + tp = (!xor) ? _mm_setzero_si128() : _mm_load_si128((__m128i *) d8); + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + BYTWO_P_ONESTEP; + _mm_store_si128((__m128i *) d8, _mm_xor_si128(prod, tp)); + d8 += 16; + s8 += 16; + } + gf_do_final_region_alignment(&rd); +} +#endif + +#ifdef INTEL_SSE2 +static + void +gf_w8_bytwo_b_sse_region_2_noxor(gf_region_data *rd, struct gf_w8_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + _mm_store_si128((__m128i *)d8, va); + d8 += 16; + s8 += 16; + } +} +#endif + +#ifdef INTEL_SSE2 +static + void +gf_w8_bytwo_b_sse_region_2_xor(gf_region_data *rd, struct gf_w8_bytwo_data *btd) +{ + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + + s8 = (uint8_t *) rd->s_start; + d8 = (uint8_t *) rd->d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + + while (d8 < (uint8_t *) rd->d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + SSE_AB2(pp, m1, m2, va, t1, t2); + vb = _mm_load_si128 ((__m128i *)(d8)); + vb = _mm_xor_si128(vb, va); + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } +} +#endif + + +#ifdef INTEL_SSE2 +static + void +gf_w8_bytwo_b_sse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + int itb; + uint8_t *d8, *s8; + __m128i pp, m1, m2, t1, t2, va, vb; + struct gf_w8_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w8_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + + if (val == 2) { + if (xor) { + gf_w8_bytwo_b_sse_region_2_xor(&rd, btd); + } else { + gf_w8_bytwo_b_sse_region_2_noxor(&rd, btd); + } + gf_do_final_region_alignment(&rd); + return; + } + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + pp = _mm_set1_epi8(btd->prim_poly&0xff); + m1 = _mm_set1_epi8((btd->mask1)&0xff); + m2 = _mm_set1_epi8((btd->mask2)&0xff); + + while (d8 < (uint8_t *) rd.d_top) { + va = _mm_load_si128 ((__m128i *)(s8)); + vb = (!xor) ? _mm_setzero_si128() : _mm_load_si128 ((__m128i *)(d8)); + itb = val; + while (1) { + if (itb & 1) vb = _mm_xor_si128(vb, va); + itb >>= 1; + if (itb == 0) break; + SSE_AB2(pp, m1, m2, va, t1, t2); + } + _mm_store_si128((__m128i *)d8, vb); + d8 += 16; + s8 += 16; + } + + gf_do_final_region_alignment(&rd); +} +#endif + +static + void +gf_w8_bytwo_b_nosse_multiply_region(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint64_t *s64, *d64, t1, t2, ta, tb, prod; + struct gf_w8_bytwo_data *btd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + btd = (struct gf_w8_bytwo_data *) ((gf_internal_t *) (gf->scratch))->private; + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + + switch (val) { + case 2: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 3: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 4: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + case 5: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + case 6: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + /* + case 7: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta ^ prod; + d64++; + s64++; + } + } + break; + */ + case 8: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= ta; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = ta; + d64++; + s64++; + } + } + break; + /* + case 9: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 10: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 11: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 12: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 13: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 14: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + case 15: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 ^= (ta ^ prod); + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + ta = *s64; + prod = ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + prod ^= ta; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + *d64 = (ta ^ prod); + d64++; + s64++; + } + } + break; + */ + default: + if (xor) { + while (d64 < (uint64_t *) rd.d_top) { + prod = *d64 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } else { + while (d64 < (uint64_t *) rd.d_top) { + prod = 0 ; + ta = *s64; + tb = val; + while (1) { + if (tb & 1) prod ^= ta; + tb >>= 1; + if (tb == 0) break; + AB2(btd->prim_poly, btd->mask1, btd->mask2, ta, t1, t2); + } + *d64 = prod; + d64++; + s64++; + } + } + break; + } + gf_do_final_region_alignment(&rd); +} + + static +int gf_w8_bytwo_init(gf_t *gf) +{ + gf_internal_t *h; + uint64_t ip, m1, m2; + struct gf_w8_bytwo_data *btd; + + h = (gf_internal_t *) gf->scratch; + btd = (struct gf_w8_bytwo_data *) (h->private); + ip = h->prim_poly & 0xff; + m1 = 0xfe; + m2 = 0x80; + btd->prim_poly = 0; + btd->mask1 = 0; + btd->mask2 = 0; + + while (ip != 0) { + btd->prim_poly |= ip; + btd->mask1 |= m1; + btd->mask2 |= m2; + ip <<= GF_FIELD_WIDTH; + m1 <<= GF_FIELD_WIDTH; + m2 <<= GF_FIELD_WIDTH; + } + + if (h->mult_type == GF_MULT_BYTWO_p) { + SET_FUNCTION(gf,multiply,w32,gf_w8_bytwo_p_multiply) +#ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_bytwo_p_sse_multiply_region) + } else { +#endif + SET_FUNCTION(gf,multiply_region,w32,gf_w8_bytwo_p_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; +#ifdef INTEL_SSE2 + } +#endif + } else { + SET_FUNCTION(gf,multiply,w32,gf_w8_bytwo_b_multiply) +#ifdef INTEL_SSE2 + if (gf_cpu_supports_intel_sse2 && !(h->region_type & GF_REGION_NOSIMD)) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_bytwo_b_sse_multiply_region) + } else { +#endif + SET_FUNCTION(gf,multiply_region,w32,gf_w8_bytwo_b_nosse_multiply_region) + if(h->region_type & GF_REGION_SIMD) + return 0; +#ifdef INTEL_SSE2 + } +#endif + } + return 1; +} + + +/* ------------------------------------------------------------ + General procedures. + You don't need to error check here on in init, because it's done + for you in gf_error_check(). + */ + +int gf_w8_scratch_size(int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + switch(mult_type) + { + case GF_MULT_DEFAULT: + if (gf_cpu_supports_intel_ssse3 || gf_cpu_supports_arm_neon) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_default_data) + 64; + } + return sizeof(gf_internal_t) + sizeof(struct gf_w8_single_table_data) + 64; + case GF_MULT_TABLE: + if (region_type == GF_REGION_CAUCHY) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_single_table_data) + 64; + } + + if (region_type == GF_REGION_DEFAULT) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_single_table_data) + 64; + } + if (region_type & GF_REGION_DOUBLE_TABLE) { + if (region_type == GF_REGION_DOUBLE_TABLE) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_double_table_data) + 64; + } else if (region_type == (GF_REGION_DOUBLE_TABLE | GF_REGION_LAZY)) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_double_table_lazy_data) + 64; + } else { + return 0; + } + } + return 0; + break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: + return sizeof(gf_internal_t) + sizeof(struct gf_w8_bytwo_data); + break; + case GF_MULT_SPLIT_TABLE: + if ((arg1 == 4 && arg2 == 8) || (arg1 == 8 && arg2 == 4)) { + return sizeof(gf_internal_t) + sizeof(struct gf_w8_half_table_data) + 64; + } + break; + case GF_MULT_LOG_TABLE: + return sizeof(gf_internal_t) + sizeof(struct gf_w8_logtable_data) + 64; + break; + case GF_MULT_LOG_ZERO: + return sizeof(gf_internal_t) + sizeof(struct gf_w8_logzero_small_table_data) + 64; + break; + case GF_MULT_LOG_ZERO_EXT: + return sizeof(gf_internal_t) + sizeof(struct gf_w8_logzero_table_data) + 64; + break; + case GF_MULT_CARRY_FREE: + return sizeof(gf_internal_t); + break; + case GF_MULT_SHIFT: + return sizeof(gf_internal_t); + break; + case GF_MULT_COMPOSITE: + return sizeof(gf_internal_t) + sizeof(struct gf_w8_composite_data) + 64; + default: + return 0; + } + return 0; +} + +int gf_w8_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + /* Allen: set default primitive polynomial / irreducible polynomial if needed */ + + if (h->prim_poly == 0) { + if (h->mult_type == GF_MULT_COMPOSITE) { + h->prim_poly = gf_composite_get_default_poly(h->base_gf); + if (h->prim_poly == 0) return 0; /* JSP: This shouldn't happen, but just in case. */ + } else { + h->prim_poly = 0x11d; + } + } + if (h->mult_type != GF_MULT_COMPOSITE) { + h->prim_poly |= 0x100; + } + + SET_FUNCTION(gf,multiply,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,NULL) + SET_FUNCTION(gf,extract_word,w32,gf_w8_extract_word) + + switch(h->mult_type) { + case GF_MULT_DEFAULT: + case GF_MULT_TABLE: if (gf_w8_table_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: + case GF_MULT_BYTWO_b: if (gf_w8_bytwo_init(gf) == 0) return 0; break; + case GF_MULT_LOG_ZERO: + case GF_MULT_LOG_ZERO_EXT: + case GF_MULT_LOG_TABLE: if (gf_w8_log_init(gf) == 0) return 0; break; + case GF_MULT_CARRY_FREE: if (gf_w8_cfm_init(gf) == 0) return 0; break; + case GF_MULT_SHIFT: if (gf_w8_shift_init(gf) == 0) return 0; break; + case GF_MULT_SPLIT_TABLE: if (gf_w8_split_init(gf) == 0) return 0; break; + case GF_MULT_COMPOSITE: if (gf_w8_composite_init(gf) == 0) return 0; break; + default: return 0; + } + + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w32,gf_w8_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w8_euclid) + } else if (h->divide_type == GF_DIVIDE_MATRIX) { + SET_FUNCTION(gf,divide,w32,gf_w8_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_w8_matrix) + } + + if (gf->divide.w32 == NULL) { + SET_FUNCTION(gf,divide,w32,gf_w8_divide_from_inverse) + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w8_euclid) + } + + if (gf->inverse.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_w8_inverse_from_divide) + + if (h->mult_type == GF_MULT_COMPOSITE && (h->region_type & GF_REGION_ALTMAP)) { + SET_FUNCTION(gf,extract_word,w32,gf_w8_composite_extract_word) + } + + if (h->region_type == GF_REGION_CAUCHY) { + SET_FUNCTION(gf,multiply_region,w32,gf_wgen_cauchy_region) + SET_FUNCTION(gf,extract_word,w32,gf_wgen_extract_word) + } + + if (gf->multiply_region.w32 == NULL) { + SET_FUNCTION(gf,multiply_region,w32,gf_w8_multiply_region_from_single) + } + + return 1; +} + + +/* Inline setup functions */ + +uint8_t *gf_w8_get_mult_table(gf_t *gf) +{ + gf_internal_t *h; + struct gf_w8_default_data *ftd; + struct gf_w8_single_table_data *std; + + h = (gf_internal_t *) gf->scratch; + if (gf->multiply.w32 == gf_w8_default_multiply) { + ftd = (struct gf_w8_default_data *) h->private; + return (uint8_t *) ftd->multtable; + } else if (gf->multiply.w32 == gf_w8_table_multiply) { + std = (struct gf_w8_single_table_data *) h->private; + return (uint8_t *) std->multtable; + } + return NULL; +} + +uint8_t *gf_w8_get_div_table(gf_t *gf) +{ + struct gf_w8_default_data *ftd; + struct gf_w8_single_table_data *std; + + if (gf->multiply.w32 == gf_w8_default_multiply) { + ftd = (struct gf_w8_default_data *) ((gf_internal_t *) gf->scratch)->private; + return (uint8_t *) ftd->divtable; + } else if (gf->multiply.w32 == gf_w8_table_multiply) { + std = (struct gf_w8_single_table_data *) ((gf_internal_t *) gf->scratch)->private; + return (uint8_t *) std->divtable; + } + return NULL; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/gf_wgen.c b/src/erasure-code/jerasure/gf-complete/src/gf_wgen.c new file mode 100644 index 00000000..1e3d2e0c --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/gf_wgen.c @@ -0,0 +1,1019 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_wgen.c + * + * Routines for Galois fields for general w < 32. For specific w, + like 4, 8, 16, 32, 64 and 128, see the other files. + */ + +#include "gf_int.h" +#include +#include + +struct gf_wgen_table_w8_data { + uint8_t *mult; + uint8_t *div; + uint8_t base; +}; + +struct gf_wgen_table_w16_data { + uint16_t *mult; + uint16_t *div; + uint16_t base; +}; + +struct gf_wgen_log_w8_data { + uint8_t *log; + uint8_t *anti; + uint8_t *danti; + uint8_t base; +}; + +struct gf_wgen_log_w16_data { + uint16_t *log; + uint16_t *anti; + uint16_t *danti; + uint16_t base; +}; + +struct gf_wgen_log_w32_data { + uint32_t *log; + uint32_t *anti; + uint32_t *danti; + uint32_t base; +}; + +struct gf_wgen_group_data { + uint32_t *reduce; + uint32_t *shift; + uint32_t mask; + uint64_t rmask; + int tshift; + uint32_t memory; +}; + +static +inline +gf_val_32_t gf_wgen_inverse_from_divide (gf_t *gf, gf_val_32_t a) +{ + return gf->divide.w32(gf, 1, a); +} + +static +inline +gf_val_32_t gf_wgen_divide_from_inverse (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + b = gf->inverse.w32(gf, b); + return gf->multiply.w32(gf, a, b); +} + +static +inline +gf_val_32_t gf_wgen_euclid (gf_t *gf, gf_val_32_t b) +{ + + gf_val_32_t e_i, e_im1, e_ip1; + gf_val_32_t d_i, d_im1, d_ip1; + gf_val_32_t y_i, y_im1, y_ip1; + gf_val_32_t c_i; + + if (b == 0) return -1; + e_im1 = ((gf_internal_t *) (gf->scratch))->prim_poly; + e_i = b; + d_im1 = ((gf_internal_t *) (gf->scratch))->w; + for (d_i = d_im1; ((1 << d_i) & e_i) == 0; d_i--) ; + y_i = 1; + y_im1 = 0; + + while (e_i != 1) { + + e_ip1 = e_im1; + d_ip1 = d_im1; + c_i = 0; + + while (d_ip1 >= d_i) { + c_i ^= (1 << (d_ip1 - d_i)); + e_ip1 ^= (e_i << (d_ip1 - d_i)); + if (e_ip1 == 0) return 0; + while ((e_ip1 & (1 << d_ip1)) == 0) d_ip1--; + } + + y_ip1 = y_im1 ^ gf->multiply.w32(gf, c_i, y_i); + y_im1 = y_i; + y_i = y_ip1; + + e_im1 = e_i; + d_im1 = d_i; + e_i = e_ip1; + d_i = d_ip1; + } + + return y_i; +} + +gf_val_32_t gf_wgen_extract_word(gf_t *gf, void *start, int bytes, int index) +{ + uint8_t *ptr; + uint32_t rv; + int rs; + int byte, bit, i; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + rs = bytes / h->w; + byte = index/8; + bit = index%8; + + ptr = (uint8_t *) start; + ptr += bytes; + ptr -= rs; + ptr += byte; + + rv = 0; + for (i = 0; i < h->w; i++) { + rv <<= 1; + if ((*ptr) & (1 << bit)) rv |= 1; + ptr -= rs; + } + + return rv; +} + +static +inline +gf_val_32_t gf_wgen_matrix (gf_t *gf, gf_val_32_t b) +{ + return gf_bitmatrix_inverse(b, ((gf_internal_t *) (gf->scratch))->w, + ((gf_internal_t *) (gf->scratch))->prim_poly); +} + +static +inline +uint32_t +gf_wgen_shift_multiply (gf_t *gf, uint32_t a32, uint32_t b32) +{ + uint64_t product, i, pp, a, b, one; + gf_internal_t *h; + + a = a32; + b = b32; + h = (gf_internal_t *) gf->scratch; + one = 1; + pp = h->prim_poly | (one << h->w); + + product = 0; + + for (i = 0; i < (uint64_t)h->w; i++) { + if (a & (one << i)) product ^= (b << i); + } + for (i = h->w*2-1; i >= (uint64_t)h->w; i--) { + if (product & (one << i)) product ^= (pp << (i-h->w)); + } + return product; +} + +static +int gf_wgen_shift_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_wgen_shift_multiply) + SET_FUNCTION(gf,inverse,w32,gf_wgen_euclid) + return 1; +} + +static +gf_val_32_t +gf_wgen_bytwo_b_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, bmask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + bmask = (1 << (h->w-1)); + + while (1) { + if (a & 1) prod ^= b; + a >>= 1; + if (a == 0) return prod; + if (b & bmask) { + b = ((b << 1) ^ pp); + } else { + b <<= 1; + } + } +} + +static +int gf_wgen_bytwo_b_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_wgen_bytwo_b_multiply) + SET_FUNCTION(gf,inverse,w32,gf_wgen_euclid) + return 1; +} + +static +inline +gf_val_32_t +gf_wgen_bytwo_p_multiply (gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + uint32_t prod, pp, pmask, amask; + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + prod = 0; + pmask = (1 << ((h->w)-1)); /*Ben: Had an operator precedence warning here*/ + amask = pmask; + + while (amask != 0) { + if (prod & pmask) { + prod = ((prod << 1) ^ pp); + } else { + prod <<= 1; + } + if (a & amask) prod ^= b; + amask >>= 1; + } + return prod; +} + + +static +int gf_wgen_bytwo_p_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply,w32,gf_wgen_bytwo_p_multiply) + SET_FUNCTION(gf,inverse,w32,gf_wgen_euclid) + return 1; +} + +static +void +gf_wgen_group_set_shift_tables(uint32_t *shift, uint32_t val, gf_internal_t *h) +{ + uint32_t i; + uint32_t j; + int g_s; + + if (h->mult_type == GF_MULT_DEFAULT) { + g_s = 2; + } else { + g_s = h->arg1; + } + + shift[0] = 0; + + for (i = 1; i < ((uint32_t)1 << g_s); i <<= 1) { + for (j = 0; j < i; j++) shift[i|j] = shift[j]^val; + if (val & (1 << (h->w-1))) { + val <<= 1; + val ^= h->prim_poly; + } else { + val <<= 1; + } + } +} + +static +inline +gf_val_32_t +gf_wgen_group_s_equals_r_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int leftover, rs; + uint32_t p, l, ind, a32; + int bits_left; + int g_s; + int w; + + struct gf_wgen_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + g_s = h->arg1; + w = h->w; + + gd = (struct gf_wgen_group_data *) h->private; + gf_wgen_group_set_shift_tables(gd->shift, b, h); + + leftover = w % g_s; + if (leftover == 0) leftover = g_s; + + rs = w - leftover; + a32 = a; + ind = a32 >> rs; + a32 <<= leftover; + a32 &= gd->mask; + p = gd->shift[ind]; + + bits_left = rs; + rs = w - g_s; + + while (bits_left > 0) { + bits_left -= g_s; + ind = a32 >> rs; + a32 <<= g_s; + a32 &= gd->mask; + l = p >> rs; + p = (gd->shift[ind] ^ gd->reduce[l] ^ (p << g_s)) & gd->mask; + } + return p; +} + +char *bits(uint32_t v) +{ + char *rv; + int i, j; + + rv = malloc(30); + j = 0; + for (i = 27; i >= 0; i--) { + rv[j] = '0' + ((v & (1 << i)) ? 1 : 0); + j++; + } + rv[j] = '\0'; + return rv; +} +char *bits_56(uint64_t v) +{ + char *rv; + int i, j; + uint64_t one; + + one = 1; + + rv = malloc(60); + j = 0; + for (i = 55; i >= 0; i--) { + rv[j] = '0' + ((v & (one << i)) ? 1 : 0); + j++; + } + rv[j] = '\0'; + return rv; +} + +static +inline +gf_val_32_t +gf_wgen_group_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + int i; + int leftover; + uint64_t p, l, r; + uint32_t a32, ind; + int g_s, g_r; + struct gf_wgen_group_data *gd; + int w; + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + if (h->mult_type == GF_MULT_DEFAULT) { + g_s = 2; + g_r = 8; + } else { + g_s = h->arg1; + g_r = h->arg2; + } + w = h->w; + gd = (struct gf_wgen_group_data *) h->private; + gf_wgen_group_set_shift_tables(gd->shift, b, h); + + leftover = w % g_s; + if (leftover == 0) leftover = g_s; + + a32 = a; + ind = a32 >> (w - leftover); + p = gd->shift[ind]; + p <<= g_s; + a32 <<= leftover; + a32 &= gd->mask; + + i = (w - leftover); + while (i > g_s) { + ind = a32 >> (w-g_s); + p ^= gd->shift[ind]; + a32 <<= g_s; + a32 &= gd->mask; + p <<= g_s; + i -= g_s; + } + + ind = a32 >> (h->w-g_s); + p ^= gd->shift[ind]; + + for (i = gd->tshift ; i >= 0; i -= g_r) { + l = p & (gd->rmask << i); + r = gd->reduce[l >> (i+w)]; + r <<= (i); + p ^= r; + } + return p & gd->mask; +} + +static +int gf_wgen_group_init(gf_t *gf) +{ + uint32_t i, j, p, index; + struct gf_wgen_group_data *gd; + gf_internal_t *h = (gf_internal_t *) gf->scratch; + uint32_t g_s, g_r; + + if (h->mult_type == GF_MULT_DEFAULT) { + g_s = 2; + g_r = 8; + } else { + g_s = h->arg1; + g_r = h->arg2; + } + gd = (struct gf_wgen_group_data *) h->private; + gd->shift = &(gd->memory); + gd->reduce = gd->shift + (1 << g_s); + gd->mask = (h->w != 31) ? ((1 << h->w)-1) : 0x7fffffff; + + gd->rmask = (1 << g_r) - 1; + gd->rmask <<= h->w; + + gd->tshift = h->w % g_s; + if (gd->tshift == 0) gd->tshift = g_s; + gd->tshift = (h->w - gd->tshift); + gd->tshift = ((gd->tshift-1)/g_r) * g_r; + + gd->reduce[0] = 0; + for (i = 0; i < ((uint32_t)1 << g_r); i++) { + p = 0; + index = 0; + for (j = 0; j < g_r; j++) { + if (i & (1 << j)) { + p ^= (h->prim_poly << j); + index ^= (h->prim_poly >> (h->w-j)); + } + } + gd->reduce[index] = (p & gd->mask); + } + + if (g_s == g_r) { + SET_FUNCTION(gf,multiply,w32,gf_wgen_group_s_equals_r_multiply) + } else { + SET_FUNCTION(gf,multiply,w32,gf_wgen_group_multiply) + } + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + return 1; +} + + +static +gf_val_32_t +gf_wgen_table_8_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_table_w8_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_table_w8_data *) h->private; + + return (std->mult[(a<w)+b]); +} + +static +gf_val_32_t +gf_wgen_table_8_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_table_w8_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_table_w8_data *) h->private; + + return (std->div[(a<w)+b]); +} + +static +int gf_wgen_table_8_init(gf_t *gf) +{ + gf_internal_t *h; + int w; + struct gf_wgen_table_w8_data *std; + uint32_t a, b, p; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + std = (struct gf_wgen_table_w8_data *) h->private; + + std->mult = &(std->base); + std->div = std->mult + ((1<w)*(1<w)); + + for (a = 0; a < ((uint32_t)1 << w); a++) { + std->mult[a] = 0; + std->mult[a<div[a] = 0; + std->div[a<mult[(a<div[(p<scratch; + std = (struct gf_wgen_table_w16_data *) h->private; + + return (std->mult[(a<w)+b]); +} + +static +gf_val_32_t +gf_wgen_table_16_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_table_w16_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_table_w16_data *) h->private; + + return (std->div[(a<w)+b]); +} + +static +int gf_wgen_table_16_init(gf_t *gf) +{ + gf_internal_t *h; + int w; + struct gf_wgen_table_w16_data *std; + uint32_t a, b, p; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + std = (struct gf_wgen_table_w16_data *) h->private; + + std->mult = &(std->base); + std->div = std->mult + ((1<w)*(1<w)); + + for (a = 0; a < ((uint32_t)1 << w); a++) { + std->mult[a] = 0; + std->mult[a<div[a] = 0; + std->div[a<mult[(a<div[(p<scratch; + if (h->w <= 8) return gf_wgen_table_8_init(gf); + if (h->w <= 14) return gf_wgen_table_16_init(gf); + + /* Returning zero to make the compiler happy, but this won't get + executed, because it is tested in _scratch_space. */ + + return 0; +} + +static +gf_val_32_t +gf_wgen_log_8_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w8_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w8_data *) h->private; + + if (a == 0 || b == 0) return 0; + return (std->anti[std->log[a]+std->log[b]]); +} + +static +gf_val_32_t +gf_wgen_log_8_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w8_data *std; + int index; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w8_data *) h->private; + + if (a == 0 || b == 0) return 0; + index = std->log[a]; + index -= std->log[b]; + + return (std->danti[index]); +} + +static +int gf_wgen_log_8_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_wgen_log_w8_data *std; + int w; + uint32_t a, i; + int check = 0; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + std = (struct gf_wgen_log_w8_data *) h->private; + + std->log = &(std->base); + std->anti = std->log + (1<w); + std->danti = std->anti + (1<w)-1; + + for (i = 0; i < ((uint32_t)1 << w); i++) + std->log[i] = 0; + + a = 1; + for(i=0; i < ((uint32_t)1<log[a] != 0) check = 1; + std->log[a] = i; + std->anti[i] = a; + std->danti[i] = a; + a <<= 1; + if(a & (1<prim_poly; + //a &= ((1 << w)-1); + } + + if (check != 0) { + _gf_errno = GF_E_LOGPOLY; + return 0; + } + + SET_FUNCTION(gf,multiply,w32,gf_wgen_log_8_multiply) + SET_FUNCTION(gf,divide,w32,gf_wgen_log_8_divide) + return 1; +} + +static +gf_val_32_t +gf_wgen_log_16_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w16_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w16_data *) h->private; + + if (a == 0 || b == 0) return 0; + return (std->anti[std->log[a]+std->log[b]]); +} + +static +gf_val_32_t +gf_wgen_log_16_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w16_data *std; + int index; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w16_data *) h->private; + + if (a == 0 || b == 0) return 0; + index = std->log[a]; + index -= std->log[b]; + + return (std->danti[index]); +} + +static +int gf_wgen_log_16_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_wgen_log_w16_data *std; + int w; + uint32_t a, i; + int check = 0; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + std = (struct gf_wgen_log_w16_data *) h->private; + + std->log = &(std->base); + std->anti = std->log + (1<w); + std->danti = std->anti + (1<w)-1; + + for (i = 0; i < ((uint32_t)1 << w); i++) + std->log[i] = 0; + + a = 1; + for(i=0; i < ((uint32_t)1<log[a] != 0) check = 1; + std->log[a] = i; + std->anti[i] = a; + std->danti[i] = a; + a <<= 1; + if(a & (1<prim_poly; + //a &= ((1 << w)-1); + } + + if (check) { + if (h->mult_type != GF_MULT_LOG_TABLE) return gf_wgen_shift_init(gf); + _gf_errno = GF_E_LOGPOLY; + return 0; + } + + SET_FUNCTION(gf,multiply,w32,gf_wgen_log_16_multiply) + SET_FUNCTION(gf,divide,w32,gf_wgen_log_16_divide) + return 1; +} + +static +gf_val_32_t +gf_wgen_log_32_multiply(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w32_data *std; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w32_data *) h->private; + + if (a == 0 || b == 0) return 0; + return (std->anti[std->log[a]+std->log[b]]); +} + +static +gf_val_32_t +gf_wgen_log_32_divide(gf_t *gf, gf_val_32_t a, gf_val_32_t b) +{ + gf_internal_t *h; + struct gf_wgen_log_w32_data *std; + int index; + + h = (gf_internal_t *) gf->scratch; + std = (struct gf_wgen_log_w32_data *) h->private; + + if (a == 0 || b == 0) return 0; + index = std->log[a]; + index -= std->log[b]; + + return (std->danti[index]); +} + +static +int gf_wgen_log_32_init(gf_t *gf) +{ + gf_internal_t *h; + struct gf_wgen_log_w32_data *std; + int w; + uint32_t a, i; + int check = 0; + + h = (gf_internal_t *) gf->scratch; + w = h->w; + std = (struct gf_wgen_log_w32_data *) h->private; + + std->log = &(std->base); + std->anti = std->log + (1<w); + std->danti = std->anti + (1<w)-1; + + for (i = 0; i < ((uint32_t)1 << w); i++) + std->log[i] = 0; + + a = 1; + for(i=0; i < ((uint32_t)1<log[a] != 0) check = 1; + std->log[a] = i; + std->anti[i] = a; + std->danti[i] = a; + a <<= 1; + if(a & (1<prim_poly; + //a &= ((1 << w)-1); + } + + if (check != 0) { + _gf_errno = GF_E_LOGPOLY; + return 0; + } + + SET_FUNCTION(gf,multiply,w32,gf_wgen_log_32_multiply) + SET_FUNCTION(gf,divide,w32,gf_wgen_log_32_divide) + return 1; +} + +static +int gf_wgen_log_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + if (h->w <= 8) return gf_wgen_log_8_init(gf); + if (h->w <= 16) return gf_wgen_log_16_init(gf); + if (h->w <= 32) return gf_wgen_log_32_init(gf); + + /* Returning zero to make the compiler happy, but this won't get + executed, because it is tested in _scratch_space. */ + + return 0; +} + +int gf_wgen_scratch_size(int w, int mult_type, int region_type, int divide_type, int arg1, int arg2) +{ + + switch(mult_type) + { + case GF_MULT_DEFAULT: + if (w <= 8) { + return sizeof(gf_internal_t) + sizeof(struct gf_wgen_table_w8_data) + + sizeof(uint8_t)*(1 << w)*(1<scratch; + rs = bytes / (h->w); + + written = (xor) ? 0xffffffff : 0; + for (i = 0; i < h->w; i++) { + for (j = 0; j < h->w; j++) { + if (val & (1 << j)) { + gf_multby_one(src, ((uint8_t *)dest) + j*rs, rs, (written & (1 << j))); + written |= (1 << j); + } + } + src = (uint8_t *)src + rs; + val = gf->multiply.w32(gf, val, 2); + } +} + +int gf_wgen_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + if (h->prim_poly == 0) { + switch (h->w) { + case 1: h->prim_poly = 1; break; + case 2: h->prim_poly = 7; break; + case 3: h->prim_poly = 013; break; + case 4: h->prim_poly = 023; break; + case 5: h->prim_poly = 045; break; + case 6: h->prim_poly = 0103; break; + case 7: h->prim_poly = 0211; break; + case 8: h->prim_poly = 0435; break; + case 9: h->prim_poly = 01021; break; + case 10: h->prim_poly = 02011; break; + case 11: h->prim_poly = 04005; break; + case 12: h->prim_poly = 010123; break; + case 13: h->prim_poly = 020033; break; + case 14: h->prim_poly = 042103; break; + case 15: h->prim_poly = 0100003; break; + case 16: h->prim_poly = 0210013; break; + case 17: h->prim_poly = 0400011; break; + case 18: h->prim_poly = 01000201; break; + case 19: h->prim_poly = 02000047; break; + case 20: h->prim_poly = 04000011; break; + case 21: h->prim_poly = 010000005; break; + case 22: h->prim_poly = 020000003; break; + case 23: h->prim_poly = 040000041; break; + case 24: h->prim_poly = 0100000207; break; + case 25: h->prim_poly = 0200000011; break; + case 26: h->prim_poly = 0400000107; break; + case 27: h->prim_poly = 01000000047; break; + case 28: h->prim_poly = 02000000011; break; + case 29: h->prim_poly = 04000000005; break; + case 30: h->prim_poly = 010040000007; break; + case 31: h->prim_poly = 020000000011; break; + case 32: h->prim_poly = 00020000007; break; + default: fprintf(stderr, "gf_wgen_init: w not defined yet\n"); exit(1); + } + } else { + if (h->w == 32) { + h->prim_poly &= 0xffffffff; + } else { + h->prim_poly |= (1 << h->w); + if (h->prim_poly & ~((1ULL<<(h->w+1))-1)) return 0; + } + } + + SET_FUNCTION(gf,multiply,w32,NULL) + SET_FUNCTION(gf,divide,w32,NULL) + SET_FUNCTION(gf,inverse,w32,NULL) + SET_FUNCTION(gf,multiply_region,w32,gf_wgen_cauchy_region) + SET_FUNCTION(gf,extract_word,w32,gf_wgen_extract_word) + + switch(h->mult_type) { + case GF_MULT_DEFAULT: + if (h->w <= 8) { + if (gf_wgen_table_init(gf) == 0) return 0; + } else if (h->w <= 16) { + if (gf_wgen_log_init(gf) == 0) return 0; + } else { + if (gf_wgen_bytwo_p_init(gf) == 0) return 0; + } + break; + case GF_MULT_SHIFT: if (gf_wgen_shift_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_b: if (gf_wgen_bytwo_b_init(gf) == 0) return 0; break; + case GF_MULT_BYTWO_p: if (gf_wgen_bytwo_p_init(gf) == 0) return 0; break; + case GF_MULT_GROUP: if (gf_wgen_group_init(gf) == 0) return 0; break; + case GF_MULT_TABLE: if (gf_wgen_table_init(gf) == 0) return 0; break; + case GF_MULT_LOG_TABLE: if (gf_wgen_log_init(gf) == 0) return 0; break; + default: return 0; + } + if (h->divide_type == GF_DIVIDE_EUCLID) { + SET_FUNCTION(gf,divide,w32,gf_wgen_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_wgen_euclid) + } else if (h->divide_type == GF_DIVIDE_MATRIX) { + SET_FUNCTION(gf,divide,w32,gf_wgen_divide_from_inverse) + SET_FUNCTION(gf,inverse,w32,gf_wgen_matrix) + } + + if (gf->inverse.w32== NULL && gf->divide.w32 == NULL) SET_FUNCTION(gf,inverse,w32,gf_wgen_euclid) + + if (gf->inverse.w32 != NULL && gf->divide.w32 == NULL) { + SET_FUNCTION(gf,divide,w32,gf_wgen_divide_from_inverse) + } + if (gf->inverse.w32 == NULL && gf->divide.w32 != NULL) { + SET_FUNCTION(gf,inverse,w32,gf_wgen_inverse_from_divide) + } + return 1; +} diff --git a/src/erasure-code/jerasure/gf-complete/src/neon/gf_w16_neon.c b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w16_neon.c new file mode 100644 index 00000000..477ee635 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w16_neon.c @@ -0,0 +1,276 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * Copyright (c) 2014: Janne Grunau + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * + * gf_w16_neon.c + * + * Neon routines for 16-bit Galois fields + * + */ + +#include "gf_int.h" +#include +#include +#include "gf_w16.h" + +#ifndef ARCH_AARCH64 +#define vqtbl1q_u8(tbl, v) vcombine_u8(vtbl2_u8(tbl, vget_low_u8(v)), \ + vtbl2_u8(tbl, vget_high_u8(v))) +#endif + +static +inline +void +neon_w16_split_4_multiply_region(gf_t *gf, uint16_t *src, uint16_t *dst, + uint16_t *d_end, uint8_t *tbl, + gf_val_32_t val, int xor) +{ + unsigned i; + uint8_t *high = tbl + 4 * 16; + uint8x16_t loset, rl, rh; + uint8x16x2_t va; + +#ifdef ARCH_AARCH64 + uint8x16_t tbl_h[4], tbl_l[4]; + for (i = 0; i < 4; i++) { + tbl_l[i] = vld1q_u8(tbl + i*16); + tbl_h[i] = vld1q_u8(high + i*16); + } +#else + uint8x8x2_t tbl_h[4], tbl_l[4]; + for (i = 0; i < 4; i++) { + tbl_l[i].val[0] = vld1_u8(tbl + i*16); + tbl_l[i].val[1] = vld1_u8(tbl + i*16 + 8); + tbl_h[i].val[0] = vld1_u8(high + i*16); + tbl_h[i].val[1] = vld1_u8(high + i*16 + 8); + } +#endif + + loset = vdupq_n_u8(0xf); + + if (xor) { + uint8x16x2_t vb; + while (dst < d_end) { + va = vld2q_u8((uint8_t*)src); + vb = vld2q_u8((uint8_t*)dst); + + rl = vqtbl1q_u8(tbl_l[0], vandq_u8(va.val[0], loset)); + rh = vqtbl1q_u8(tbl_h[0], vandq_u8(va.val[0], loset)); + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[2], vandq_u8(va.val[1], loset))); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[2], vandq_u8(va.val[1], loset))); + + va.val[0] = vshrq_n_u8(va.val[0], 4); + va.val[1] = vshrq_n_u8(va.val[1], 4); + + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[1], va.val[0])); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[1], va.val[0])); + va.val[0] = veorq_u8(rl, vqtbl1q_u8(tbl_l[3], va.val[1])); + va.val[1] = veorq_u8(rh, vqtbl1q_u8(tbl_h[3], va.val[1])); + + va.val[0] = veorq_u8(va.val[0], vb.val[0]); + va.val[1] = veorq_u8(va.val[1], vb.val[1]); + vst2q_u8((uint8_t*)dst, va); + + src += 16; + dst += 16; + } + } else { + while (dst < d_end) { + va = vld2q_u8((uint8_t*)src); + + rl = vqtbl1q_u8(tbl_l[0], vandq_u8(va.val[0], loset)); + rh = vqtbl1q_u8(tbl_h[0], vandq_u8(va.val[0], loset)); + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[2], vandq_u8(va.val[1], loset))); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[2], vandq_u8(va.val[1], loset))); + + va.val[0] = vshrq_n_u8(va.val[0], 4); + va.val[1] = vshrq_n_u8(va.val[1], 4); + + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[1], va.val[0])); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[1], va.val[0])); + va.val[0] = veorq_u8(rl, vqtbl1q_u8(tbl_l[3], va.val[1])); + va.val[1] = veorq_u8(rh, vqtbl1q_u8(tbl_h[3], va.val[1])); + + vst2q_u8((uint8_t*)dst, va); + + src += 16; + dst += 16; + } + } +} + +static +inline +void +neon_w16_split_4_altmap_multiply_region(gf_t *gf, uint8_t *src, + uint8_t *dst, uint8_t *d_end, + uint8_t *tbl, gf_val_32_t val, + int xor) +{ + unsigned i; + uint8_t *high = tbl + 4 * 16; + uint8x16_t vh, vl, rh, rl; + uint8x16_t loset; + +#ifdef ARCH_AARCH64 + uint8x16_t tbl_h[4], tbl_l[4]; +#else + uint8x8x2_t tbl_h[4], tbl_l[4]; +#endif + for (i = 0; i < 4; i++) { +#ifdef ARCH_AARCH64 + tbl_l[i] = vld1q_u8(tbl + i*16); + tbl_h[i] = vld1q_u8(high + i*16); +#else + tbl_l[i].val[0] = vld1_u8(tbl + i*16); + tbl_l[i].val[1] = vld1_u8(tbl + i*16 + 8); + tbl_h[i].val[0] = vld1_u8(high + i*16); + tbl_h[i].val[1] = vld1_u8(high + i*16 + 8); +#endif + } + + loset = vdupq_n_u8(0xf); + + while (dst < d_end) { + vh = vld1q_u8(src); + vl = vld1q_u8(src + 16); + + rl = vqtbl1q_u8(tbl_l[0], vandq_u8(vl, loset)); + rh = vqtbl1q_u8(tbl_h[0], vandq_u8(vl, loset)); + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[2], vandq_u8(vh, loset))); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[2], vandq_u8(vh, loset))); + + vl = vshrq_n_u8(vl, 4); + vh = vshrq_n_u8(vh, 4); + + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[1], vl)); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[1], vl)); + rl = veorq_u8(rl, vqtbl1q_u8(tbl_l[3], vh)); + rh = veorq_u8(rh, vqtbl1q_u8(tbl_h[3], vh)); + + if (xor) { + vh = vld1q_u8(dst); + vl = vld1q_u8(dst + 16); + rh = veorq_u8(rh, vh); + rl = veorq_u8(rl, vl); + } + vst1q_u8(dst, rh); + vst1q_u8(dst + 16, rl); + + src += 32; + dst += 32; + } +} + + + +static +inline +void +neon_w16_split_4_16_lazy_multiply_region(gf_t *gf, void *src, void *dest, + gf_val_32_t val, int bytes, int xor, + int altmap) +{ + gf_region_data rd; + unsigned i, j; + uint64_t c, prod; + uint8_t tbl[2 * 4 * 16]; + uint8_t *high = tbl + 4 * 16; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + for (i = 0; i < 4; i++) { + for (j = 0; j < 16; j++) { + c = (j << (i*4)); + prod = gf->multiply.w32(gf, c, val); + tbl[i*16 + j] = prod & 0xff; + high[i*16 + j] = prod >> 8; + } + } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 32); + gf_do_initial_region_alignment(&rd); + + if (altmap) { + uint8_t *s8 = rd.s_start; + uint8_t *d8 = rd.d_start; + uint8_t *end8 = rd.d_top; + if (xor) + neon_w16_split_4_altmap_multiply_region(gf, s8, d8, end8, tbl, val, 1); + else + neon_w16_split_4_altmap_multiply_region(gf, s8, d8, end8, tbl, val, 0); + } else { + uint16_t *s16 = rd.s_start; + uint16_t *d16 = rd.d_start; + uint16_t *end16 = rd.d_top; + if (xor) + neon_w16_split_4_multiply_region(gf, s16, d16, end16, tbl, val, 1); + else + neon_w16_split_4_multiply_region(gf, s16, d16, end16, tbl, val, 0); + } + + gf_do_final_region_alignment(&rd); +} + +static +void +gf_w16_split_4_16_lazy_multiply_region_neon(gf_t *gf, void *src, void *dest, + gf_val_32_t val, int bytes, int xor) +{ + neon_w16_split_4_16_lazy_multiply_region(gf, src, dest, val, bytes, xor, 0); +} + +static +void +gf_w16_split_4_16_lazy_altmap_multiply_region_neon(gf_t *gf, void *src, + void *dest, + gf_val_32_t val, int bytes, + int xor) +{ + neon_w16_split_4_16_lazy_multiply_region(gf, src, dest, val, bytes, xor, 1); +} + + +void gf_w16_neon_split_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (h->region_type & GF_REGION_ALTMAP) + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_altmap_multiply_region_neon) + else + SET_FUNCTION(gf,multiply_region,w32,gf_w16_split_4_16_lazy_multiply_region_neon) +} diff --git a/src/erasure-code/jerasure/gf-complete/src/neon/gf_w32_neon.c b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w32_neon.c new file mode 100644 index 00000000..7fd13290 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w32_neon.c @@ -0,0 +1,269 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * Copyright (c) 2014: Janne Grunau + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * gf_w32_neon.c + * + * Neon routines for 32-bit Galois fields + * + */ + + +#include "gf_int.h" +#include +#include +#include "gf_w32.h" + +#ifndef ARCH_AARCH64 +#define vqtbl1q_u8(tbl, v) vcombine_u8(vtbl2_u8(tbl, vget_low_u8(v)), \ + vtbl2_u8(tbl, vget_high_u8(v))) +#endif + +static +void +neon_w32_split_4_32_multiply_region(gf_t *gf, uint32_t *src, uint32_t *dst, + uint32_t *d_end, uint8_t btable[8][4][16], + uint32_t val, int xor, int altmap) +{ + int i, j; +#ifdef ARCH_AARCH64 + uint8x16_t tables[8][4]; +#else + uint8x8x2_t tables[8][4]; +#endif + uint32x4_t v0, v1, v2, v3, s0, s1, s2, s3; + uint8x16_t p0, p1, p2, p3, si, mask1; + uint16x8x2_t r0, r1; + uint8x16x2_t q0, q1; + + for (i = 0; i < 8; i++) { + for (j = 0; j < 4; j++) { +#ifdef ARCH_AARCH64 + tables[i][j] = vld1q_u8(btable[i][j]); +#else + tables[i][j].val[0] = vld1_u8(btable[i][j]); + tables[i][j].val[1] = vld1_u8(btable[i][j] + 8); +#endif + } + } + + mask1 = vdupq_n_u8(0xf); + + while (dst < d_end) { + + v0 = vld1q_u32(src); src += 4; + v1 = vld1q_u32(src); src += 4; + v2 = vld1q_u32(src); src += 4; + v3 = vld1q_u32(src); src += 4; + + if (altmap) { + q0.val[0] = vreinterpretq_u8_u32(v0); + q0.val[1] = vreinterpretq_u8_u32(v1); + q1.val[0] = vreinterpretq_u8_u32(v2); + q1.val[1] = vreinterpretq_u8_u32(v3); + } else { + r0 = vtrnq_u16(vreinterpretq_u16_u32(v0), vreinterpretq_u16_u32(v2)); + r1 = vtrnq_u16(vreinterpretq_u16_u32(v1), vreinterpretq_u16_u32(v3)); + + q0 = vtrnq_u8(vreinterpretq_u8_u16(r0.val[0]), + vreinterpretq_u8_u16(r1.val[0])); + q1 = vtrnq_u8(vreinterpretq_u8_u16(r0.val[1]), + vreinterpretq_u8_u16(r1.val[1])); + } + + si = vandq_u8(q0.val[0], mask1); + p0 = vqtbl1q_u8(tables[0][0], si); + p1 = vqtbl1q_u8(tables[0][1], si); + p2 = vqtbl1q_u8(tables[0][2], si); + p3 = vqtbl1q_u8(tables[0][3], si); + + si = vshrq_n_u8(q0.val[0], 4); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[1][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[1][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[1][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[1][3], si)); + + si = vandq_u8(q0.val[1], mask1); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[2][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[2][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[2][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[2][3], si)); + + si = vshrq_n_u8(q0.val[1], 4); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[3][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[3][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[3][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[3][3], si)); + + si = vandq_u8(q1.val[0], mask1); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[4][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[4][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[4][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[4][3], si)); + + si = vshrq_n_u8(q1.val[0], 4); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[5][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[5][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[5][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[5][3], si)); + + si = vandq_u8(q1.val[1], mask1); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[6][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[6][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[6][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[6][3], si)); + + si = vshrq_n_u8(q1.val[1], 4); + p0 = veorq_u8(p0, vqtbl1q_u8(tables[7][0], si)); + p1 = veorq_u8(p1, vqtbl1q_u8(tables[7][1], si)); + p2 = veorq_u8(p2, vqtbl1q_u8(tables[7][2], si)); + p3 = veorq_u8(p3, vqtbl1q_u8(tables[7][3], si)); + + if (altmap) { + s0 = vreinterpretq_u32_u8(p0); + s1 = vreinterpretq_u32_u8(p1); + s2 = vreinterpretq_u32_u8(p2); + s3 = vreinterpretq_u32_u8(p3); + } else { + q0 = vtrnq_u8(p0, p1); + q1 = vtrnq_u8(p2, p3); + + r0 = vtrnq_u16(vreinterpretq_u16_u8(q0.val[0]), + vreinterpretq_u16_u8(q1.val[0])); + r1 = vtrnq_u16(vreinterpretq_u16_u8(q0.val[1]), + vreinterpretq_u16_u8(q1.val[1])); + + s0 = vreinterpretq_u32_u16(r0.val[0]); + s1 = vreinterpretq_u32_u16(r1.val[0]); + s2 = vreinterpretq_u32_u16(r0.val[1]); + s3 = vreinterpretq_u32_u16(r1.val[1]); + } + + if (xor) { + v0 = vld1q_u32(dst); + v1 = vld1q_u32(dst + 4); + v2 = vld1q_u32(dst + 8); + v3 = vld1q_u32(dst + 12); + s0 = veorq_u32(s0, v0); + s1 = veorq_u32(s1, v1); + s2 = veorq_u32(s2, v2); + s3 = veorq_u32(s3, v3); + } + + vst1q_u32(dst, s0); + vst1q_u32(dst + 4, s1); + vst1q_u32(dst + 8, s2); + vst1q_u32(dst + 12, s3); + + dst += 16; + } +} + +static +inline +void +neon_w32_split_4_32_lazy_multiply_region(gf_t *gf, void *src, void *dest, uint32_t val, int bytes, int xor, int altmap) +{ + gf_internal_t *h; + int i, j, k; + uint32_t pp, v, *s32, *d32, *top, tmp_table[16]; + uint8_t btable[8][4][16]; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 64); + gf_do_initial_region_alignment(&rd); + + s32 = (uint32_t *) rd.s_start; + d32 = (uint32_t *) rd.d_start; + top = (uint32_t *) rd.d_top; + + v = val; + for (i = 0; i < 8; i++) { + tmp_table[0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + tmp_table[k^j] = (v ^ tmp_table[k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + for (j = 0; j < 4; j++) { + for (k = 0; k < 16; k++) { + btable[i][j][k] = (uint8_t) tmp_table[k]; + tmp_table[k] >>= 8; + } + } + } + + if (xor) + neon_w32_split_4_32_multiply_region(gf, s32, d32, top, btable, val, 1, altmap); + else + neon_w32_split_4_32_multiply_region(gf, s32, d32, top, btable, val, 0, altmap); + + gf_do_final_region_alignment(&rd); +} + +static +void +gf_w32_split_4_32_lazy_multiply_region_neon(gf_t *gf, void *src, void *dest, + gf_val_32_t val, int bytes, int xor) +{ + neon_w32_split_4_32_lazy_multiply_region(gf, src, dest, val, bytes, xor, 0); +} + +static +void +gf_w32_split_4_32_lazy_altmap_multiply_region_neon(gf_t *gf, void *src, + void *dest, gf_val_32_t val, + int bytes, int xor) +{ + neon_w32_split_4_32_lazy_multiply_region(gf, src, dest, val, bytes, xor, 1); +} + +void gf_w32_neon_split_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (h->region_type & GF_REGION_ALTMAP) + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_4_32_lazy_altmap_multiply_region_neon) + else + SET_FUNCTION(gf,multiply_region,w32,gf_w32_split_4_32_lazy_multiply_region_neon) + +} diff --git a/src/erasure-code/jerasure/gf-complete/src/neon/gf_w4_neon.c b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w4_neon.c new file mode 100644 index 00000000..5f35c863 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w4_neon.c @@ -0,0 +1,247 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * Copyright (c) 2014: Janne Grunau + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * gf_w4_neon.c + * + * Neon routines for 4-bit Galois fields + * + */ + +#include "gf_int.h" +#include +#include +#include "gf_w4.h" + +static +gf_val_32_t +gf_w4_neon_clm_multiply (gf_t *gf, gf_val_32_t a4, gf_val_32_t b4) +{ + gf_val_32_t rv = 0; + poly8x8_t result, prim_poly; + poly8x8_t a, b, w; + uint8x8_t v; + gf_internal_t * h = gf->scratch; + + a = vdup_n_p8 (a4); + b = vdup_n_p8 (b4); + + prim_poly = vdup_n_p8 ((uint32_t)(h->prim_poly & 0x1fULL)); + + /* Do the initial multiply */ + result = vmul_p8 (a, b); + v = vshr_n_u8 (vreinterpret_u8_p8(result), 4); + w = vmul_p8 (prim_poly, vreinterpret_p8_u8(v)); + result = vreinterpret_p8_u8 (veor_u8 (vreinterpret_u8_p8(result), vreinterpret_u8_p8(w))); + + /* Extracts 32 bit value from result. */ + rv = (gf_val_32_t)vget_lane_u8 (vreinterpret_u8_p8 (result), 0); + + return rv; +} + +static inline void +neon_clm_multiply_region_from_single (gf_t *gf, uint8_t *s8, uint8_t *d8, + gf_val_32_t val, uint8_t *d_end, int xor) +{ + gf_internal_t * h = gf->scratch; + poly8x8_t prim_poly; + poly8x8_t a, w, even, odd; + uint8x8_t b, c, v, mask; + + a = vdup_n_p8 (val); + mask = vdup_n_u8 (0xf); + prim_poly = vdup_n_p8 ((uint8_t)(h->prim_poly & 0x1fULL)); + + while (d8 < d_end) { + b = vld1_u8 (s8); + + even = vreinterpret_p8_u8 (vand_u8 (b, mask)); + odd = vreinterpret_p8_u8 (vshr_n_u8 (b, 4)); + + if (xor) + c = vld1_u8 (d8); + + even = vmul_p8 (a, even); + odd = vmul_p8 (a, odd); + + v = vshr_n_u8 (vreinterpret_u8_p8(even), 4); + w = vmul_p8 (prim_poly, vreinterpret_p8_u8(v)); + even = vreinterpret_p8_u8 (veor_u8 (vreinterpret_u8_p8(even), vreinterpret_u8_p8(w))); + + v = vshr_n_u8 (vreinterpret_u8_p8(odd), 4); + w = vmul_p8 (prim_poly, vreinterpret_p8_u8(v)); + odd = vreinterpret_p8_u8 (veor_u8 (vreinterpret_u8_p8(odd), vreinterpret_u8_p8(w))); + + v = veor_u8 (vreinterpret_u8_p8 (even), vshl_n_u8 (vreinterpret_u8_p8 (odd), 4)); + + if (xor) + v = veor_u8 (c, v); + + vst1_u8 (d8, v); + + d8 += 8; + s8 += 8; + } +} + + +static void +gf_w4_neon_clm_multiply_region_from_single (gf_t *gf, void *src, void *dest, + gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint8_t *s8; + uint8_t *d8; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + s8 = (uint8_t *) rd.s_start; + d8 = (uint8_t *) rd.d_start; + + if (xor) + neon_clm_multiply_region_from_single (gf, s8, d8, val, rd.d_top, 1); + else + neon_clm_multiply_region_from_single (gf, s8, d8, val, rd.d_top, 0); + + gf_do_final_region_alignment(&rd); +} + +#ifndef ARCH_AARCH64 +#define vqtbl1q_u8(tbl, v) vcombine_u8(vtbl2_u8(tbl, vget_low_u8(v)), \ + vtbl2_u8(tbl, vget_high_u8(v))) +#endif + +static +inline +void +w4_single_table_multiply_region_neon(gf_t *gf, uint8_t *src, uint8_t *dst, + uint8_t * d_end, gf_val_32_t val, int xor) +{ + struct gf_single_table_data *std; + uint8_t *base; + uint8x16_t r, va, vh, vl, loset; + +#ifdef ARCH_AARCH64 + uint8x16_t th, tl; +#else + uint8x8x2_t th, tl; +#endif + + std = (struct gf_single_table_data *) ((gf_internal_t *) (gf->scratch))->private; + base = (uint8_t *) std->mult; + base += (val << GF_FIELD_WIDTH); + +#ifdef ARCH_AARCH64 + tl = vld1q_u8 (base); + th = vshlq_n_u8 (tl, 4); +#else + tl.val[0] = vld1_u8 (base); + tl.val[1] = vld1_u8 (base + 8); + th.val[0] = vshl_n_u8 (tl.val[0], 4); + th.val[1] = vshl_n_u8 (tl.val[1], 4); +#endif + + loset = vdupq_n_u8(0xf); + + while (dst < d_end) { + va = vld1q_u8 (src); + + vh = vshrq_n_u8 (va, 4); + vl = vandq_u8 (va, loset); + + if (xor) + va = vld1q_u8 (dst); + + vh = vqtbl1q_u8 (th, vh); + vl = vqtbl1q_u8 (tl, vl); + + r = veorq_u8 (vh, vl); + + if (xor) + r = veorq_u8 (va, r); + + vst1q_u8 (dst, r); + + dst += 16; + src += 16; + } +} + +static +void +gf_w4_single_table_multiply_region_neon(gf_t *gf, void *src, void *dest, + gf_val_32_t val, int bytes, int xor) +{ + gf_region_data rd; + uint8_t *sptr, *dptr, *top; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + sptr = rd.s_start; + dptr = rd.d_start; + top = rd.d_top; + + if (xor) + w4_single_table_multiply_region_neon(gf, sptr, dptr, top, val, 1); + else + w4_single_table_multiply_region_neon(gf, sptr, dptr, top, val, 0); + + gf_do_final_region_alignment(&rd); + +} + + +int gf_w4_neon_cfm_init(gf_t *gf) +{ + // single clm multiplication probably pointless + SET_FUNCTION(gf,multiply,w32,gf_w4_neon_clm_multiply) + SET_FUNCTION(gf,multiply_region,w32,gf_w4_neon_clm_multiply_region_from_single) + + return 1; +} + +void gf_w4_neon_single_table_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply_region,w32,gf_w4_single_table_multiply_region_neon) +} diff --git a/src/erasure-code/jerasure/gf-complete/src/neon/gf_w64_neon.c b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w64_neon.c new file mode 100644 index 00000000..24098232 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w64_neon.c @@ -0,0 +1,333 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * Copyright (c) 2014: Janne Grunau + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * gf_w64_neon.c + * + * Neon routines for 64-bit Galois fields + * + */ + +#include "gf_int.h" +#include +#include +#include "gf_w64.h" + + +#ifndef ARCH_AARCH64 +#define vqtbl1q_u8(tbl, v) vcombine_u8(vtbl2_u8(tbl, vget_low_u8(v)), \ + vtbl2_u8(tbl, vget_high_u8(v))) +#endif + +static +inline +void +neon_w64_split_4_lazy_altmap_multiply_region(gf_t *gf, uint64_t *src, + uint64_t *dst, uint64_t *d_end, + uint64_t val, int xor) +{ + unsigned i, j, k; + uint8_t btable[16]; +#ifdef ARCH_AARCH64 + uint8x16_t tables[16][8]; +#else + uint8x8x2_t tables[16][8]; +#endif + uint8x16_t p[8], mask1, si; + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + struct gf_split_4_64_lazy_data *ld = (struct gf_split_4_64_lazy_data *) h->private; + + for (i = 0; i < 16; i++) { + for (j = 0; j < 8; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[i][k]; + ld->tables[i][k] >>= 8; + } +#ifdef ARCH_AARCH64 + tables[i][j] = vld1q_u8(btable); +#else + tables[i][j].val[0] = vld1_u8(btable); + tables[i][j].val[1] = vld1_u8(btable + 8); +#endif + } + } + + mask1 = vdupq_n_u8(0xf); + + while (dst < d_end) { + + if (xor) { + for (i = 0; i < 8; i++) + p[i] = vld1q_u8((uint8_t *) (dst + i * 2)); + } else { + for (i = 0; i < 8; i++) + p[i] = vdupq_n_u8(0); + } + + i = 0; + for (k = 0; k < 8; k++) { + uint8x16_t v0 = vld1q_u8((uint8_t *) src); + src += 2; + + si = vandq_u8(v0, mask1); + for (j = 0; j < 8; j++) { + p[j] = veorq_u8(p[j], vqtbl1q_u8(tables[i][j], si)); + } + i++; + si = vshrq_n_u8(v0, 4); + for (j = 0; j < 8; j++) { + p[j] = veorq_u8(p[j], vqtbl1q_u8(tables[i][j], si)); + } + i++; + + } + for (i = 0; i < 8; i++) { + vst1q_u8((uint8_t *) dst, p[i]); + dst += 2; + } + } +} + +static +inline +void +neon_w64_split_4_lazy_multiply_region(gf_t *gf, uint64_t *src, uint64_t *dst, + uint64_t *d_end, uint64_t val, int xor) +{ + unsigned i, j, k; + uint8_t btable[16]; +#ifdef ARCH_AARCH64 + uint8x16_t tables[16][8]; +#else + uint8x8x2_t tables[16][8]; +#endif + uint8x16_t p[8], mask1, si; + uint64x2_t st[8]; + uint32x4x2_t s32[4]; + uint16x8x2_t s16[4]; + uint8x16x2_t s8[4]; + + gf_internal_t *h = (gf_internal_t *) gf->scratch; + struct gf_split_4_64_lazy_data *ld = (struct gf_split_4_64_lazy_data *) h->private; + + for (i = 0; i < 16; i++) { + for (j = 0; j < 8; j++) { + for (k = 0; k < 16; k++) { + btable[k] = (uint8_t) ld->tables[i][k]; + ld->tables[i][k] >>= 8; + } +#ifdef ARCH_AARCH64 + tables[i][j] = vld1q_u8(btable); +#else + tables[i][j].val[0] = vld1_u8(btable); + tables[i][j].val[1] = vld1_u8(btable + 8); +#endif + } + } + + mask1 = vdupq_n_u8(0xf); + + while (dst < d_end) { + + for (k = 0; k < 8; k++) { + st[k] = vld1q_u64(src); + src += 2; + p[k] = vdupq_n_u8(0); + } + + s32[0] = vuzpq_u32(vreinterpretq_u32_u64(st[0]), + vreinterpretq_u32_u64(st[1])); + s32[1] = vuzpq_u32(vreinterpretq_u32_u64(st[2]), + vreinterpretq_u32_u64(st[3])); + s32[2] = vuzpq_u32(vreinterpretq_u32_u64(st[4]), + vreinterpretq_u32_u64(st[5])); + s32[3] = vuzpq_u32(vreinterpretq_u32_u64(st[6]), + vreinterpretq_u32_u64(st[7])); + + s16[0] = vuzpq_u16(vreinterpretq_u16_u32(s32[0].val[0]), + vreinterpretq_u16_u32(s32[1].val[0])); + s16[1] = vuzpq_u16(vreinterpretq_u16_u32(s32[2].val[0]), + vreinterpretq_u16_u32(s32[3].val[0])); + s16[2] = vuzpq_u16(vreinterpretq_u16_u32(s32[0].val[1]), + vreinterpretq_u16_u32(s32[1].val[1])); + s16[3] = vuzpq_u16(vreinterpretq_u16_u32(s32[2].val[1]), + vreinterpretq_u16_u32(s32[3].val[1])); + + s8[0] = vuzpq_u8(vreinterpretq_u8_u16(s16[0].val[0]), + vreinterpretq_u8_u16(s16[1].val[0])); + s8[1] = vuzpq_u8(vreinterpretq_u8_u16(s16[0].val[1]), + vreinterpretq_u8_u16(s16[1].val[1])); + s8[2] = vuzpq_u8(vreinterpretq_u8_u16(s16[2].val[0]), + vreinterpretq_u8_u16(s16[3].val[0])); + s8[3] = vuzpq_u8(vreinterpretq_u8_u16(s16[2].val[1]), + vreinterpretq_u8_u16(s16[3].val[1])); + + i = 0; + for (k = 0; k < 8; k++) { + si = vandq_u8(s8[k >> 1].val[k & 1], mask1); + for (j = 0; j < 8; j++) { + p[j] = veorq_u8(p[j], vqtbl1q_u8(tables[i][j], si)); + } + i++; + si = vshrq_n_u8(s8[k >> 1].val[k & 1], 4); + for (j = 0; j < 8; j++) { + p[j] = veorq_u8(p[j], vqtbl1q_u8(tables[i][j], si)); + } + i++; + } + + s8[0] = vzipq_u8(p[0], p[1]); + s8[1] = vzipq_u8(p[2], p[3]); + s8[2] = vzipq_u8(p[4], p[5]); + s8[3] = vzipq_u8(p[6], p[7]); + + s16[0] = vzipq_u16(vreinterpretq_u16_u8(s8[0].val[0]), + vreinterpretq_u16_u8(s8[1].val[0])); + s16[1] = vzipq_u16(vreinterpretq_u16_u8(s8[2].val[0]), + vreinterpretq_u16_u8(s8[3].val[0])); + s16[2] = vzipq_u16(vreinterpretq_u16_u8(s8[0].val[1]), + vreinterpretq_u16_u8(s8[1].val[1])); + s16[3] = vzipq_u16(vreinterpretq_u16_u8(s8[2].val[1]), + vreinterpretq_u16_u8(s8[3].val[1])); + + s32[0] = vzipq_u32(vreinterpretq_u32_u16(s16[0].val[0]), + vreinterpretq_u32_u16(s16[1].val[0])); + s32[1] = vzipq_u32(vreinterpretq_u32_u16(s16[0].val[1]), + vreinterpretq_u32_u16(s16[1].val[1])); + s32[2] = vzipq_u32(vreinterpretq_u32_u16(s16[2].val[0]), + vreinterpretq_u32_u16(s16[3].val[0])); + s32[3] = vzipq_u32(vreinterpretq_u32_u16(s16[2].val[1]), + vreinterpretq_u32_u16(s16[3].val[1])); + + for (k = 0; k < 8; k ++) { + st[k] = vreinterpretq_u64_u32(s32[k >> 1].val[k & 1]); + } + + if (xor) { + for (i = 0; i < 8; i++) { + uint64x2_t t1 = vld1q_u64(dst); + vst1q_u64(dst, veorq_u64(st[i], t1)); + dst += 2; + } + } else { + for (i = 0; i < 8; i++) { + vst1q_u64(dst, st[i]); + dst += 2; + } + } + + } +} + +static +void +gf_w64_neon_split_4_lazy_multiply_region(gf_t *gf, void *src, void *dest, + uint64_t val, int bytes, int xor, + int altmap) +{ + gf_internal_t *h; + int i, j, k; + uint64_t pp, v, *s64, *d64, *top; + struct gf_split_4_64_lazy_data *ld; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 128); + gf_do_initial_region_alignment(&rd); + + s64 = (uint64_t *) rd.s_start; + d64 = (uint64_t *) rd.d_start; + top = (uint64_t *) rd.d_top; + + h = (gf_internal_t *) gf->scratch; + pp = h->prim_poly; + ld = (struct gf_split_4_64_lazy_data *) h->private; + + v = val; + for (i = 0; i < 16; i++) { + ld->tables[i][0] = 0; + for (j = 1; j < 16; j <<= 1) { + for (k = 0; k < j; k++) { + ld->tables[i][k^j] = (v ^ ld->tables[i][k]); + } + v = (v & GF_FIRST_BIT) ? ((v << 1) ^ pp) : (v << 1); + } + } + + if (altmap) { + if (xor) + neon_w64_split_4_lazy_altmap_multiply_region(gf, s64, d64, top, val, 1); + else + neon_w64_split_4_lazy_altmap_multiply_region(gf, s64, d64, top, val, 0); + } else { + if (xor) + neon_w64_split_4_lazy_multiply_region(gf, s64, d64, top, val, 1); + else + neon_w64_split_4_lazy_multiply_region(gf, s64, d64, top, val, 0); + } + + gf_do_final_region_alignment(&rd); +} + +static +void +gf_w64_split_4_64_lazy_multiply_region_neon(gf_t *gf, void *src, void *dest, + uint64_t val, int bytes, int xor) +{ + gf_w64_neon_split_4_lazy_multiply_region(gf, src, dest, val, bytes, xor, 0); +} + +static +void +gf_w64_split_4_64_lazy_altmap_multiply_region_neon(gf_t *gf, void *src, + void *dest, uint64_t val, + int bytes, int xor) +{ + gf_w64_neon_split_4_lazy_multiply_region(gf, src, dest, val, bytes, xor, 1); +} + +void gf_w64_neon_split_init(gf_t *gf) +{ + gf_internal_t *h = (gf_internal_t *) gf->scratch; + + if (h->region_type & GF_REGION_ALTMAP) + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_altmap_multiply_region_neon) + else + SET_FUNCTION(gf,multiply_region,w64,gf_w64_split_4_64_lazy_multiply_region_neon) + +} diff --git a/src/erasure-code/jerasure/gf-complete/src/neon/gf_w8_neon.c b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w8_neon.c new file mode 100644 index 00000000..0cce5ba7 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/src/neon/gf_w8_neon.c @@ -0,0 +1,302 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * Copyright (c) 2014: Janne Grunau + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * gf_w8_neon.c + * + * Neon optimized routines for 8-bit Galois fields + * + */ + +#include "gf_int.h" +#include "gf_w8.h" +#include +#include + +/* ARM NEON reducing macro for the carry free multiplication + * vmull_p8 is the carryless multiply operation. Here vshrn_n_u16 shifts + * the result to the right by 1 byte. This allows us to multiply + * the prim_poly by the leading bits of the result. We then xor the result + * of that operation back with the result. */ +#define NEON_CFM_REDUCE(v, w, result, prim_poly, initial) \ + do { \ + if (initial) \ + v = vshrn_n_u16 (vreinterpretq_u16_p16(result), 8); \ + else \ + v = veor_u8 (v, vshrn_n_u16 (vreinterpretq_u16_p16(result), 8)); \ + w = vmull_p8 (prim_poly, vreinterpret_p8_u8(v)); \ + result = vreinterpretq_p16_u16 (veorq_u16 (vreinterpretq_u16_p16(result), vreinterpretq_u16_p16(w))); \ + } while (0) + +static +inline +gf_val_32_t +gf_w8_neon_clm_multiply_x (gf_t *gf, gf_val_32_t a8, gf_val_32_t b8, int x) +{ + gf_val_32_t rv = 0; + poly8x8_t a, b; + uint8x8_t v; + poly16x8_t result; + poly8x8_t prim_poly; + poly16x8_t w; + gf_internal_t * h = gf->scratch; + + a = vdup_n_p8 (a8); + b = vdup_n_p8 (b8); + + prim_poly = vdup_n_p8 ((uint32_t)(h->prim_poly & 0x1ffULL)); + + /* Do the initial multiply */ + result = vmull_p8 (a, b); + + /* Ben: Do prim_poly reduction twice. We are guaranteed that we will only + have to do the reduction at most twice, because (w-2)/z == 2. Where + z is equal to the number of zeros after the leading 1 */ + NEON_CFM_REDUCE (v, w, result, prim_poly, 1); + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + if (x >= 3) { + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + } + if (x >= 4) { + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + } + /* Extracts 32 bit value from result. */ + rv = (gf_val_32_t)vget_lane_u8 (vmovn_u16 (vreinterpretq_u16_p16 (result)), 0); + + return rv; +} + +#define CLM_MULTIPLY(x) \ +static gf_val_32_t gf_w8_neon_clm_multiply_ ## x (gf_t *gf, gf_val_32_t a8, gf_val_32_t b8) \ +{\ + return gf_w8_neon_clm_multiply_x (gf, a8, b8, x);\ +} + +CLM_MULTIPLY(2) +CLM_MULTIPLY(3) +CLM_MULTIPLY(4) + +static inline void +neon_clm_multiply_region_from_single_x(gf_t *gf, uint8_t *s8, uint8_t *d8, + gf_val_32_t val, uint8_t *d_end, + int xor, int x) +{ + gf_internal_t * h = gf->scratch; + poly8x8_t a, b; + uint8x8_t c, v; + poly16x8_t result; + poly8x8_t prim_poly; + poly16x8_t w; + + a = vdup_n_p8 (val); + prim_poly = vdup_n_p8 ((uint8_t)(h->prim_poly & 0xffULL)); + + while (d8 < d_end) { + b = vld1_p8 ((poly8_t *) s8); + + if (xor) + c = vld1_u8 (d8); + + result = vmull_p8 (a, b); + + NEON_CFM_REDUCE(v, w, result, prim_poly, 1); + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + if (x >= 3) { + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + } + if (x >= 4) { + NEON_CFM_REDUCE (v, w, result, prim_poly, 0); + } + v = vmovn_u16 (vreinterpretq_u16_p16 (result)); + if (xor) + v = veor_u8 (c, v); + + vst1_u8 (d8, v); + + d8 += 8; + s8 += 8; + } +} + +#define CLM_MULT_REGION(x) \ +static void \ +gf_w8_neon_clm_multiply_region_from_single_ ## x (gf_t *gf, void *src, \ + void *dest, \ + gf_val_32_t val, int bytes, \ + int xor) \ +{ \ + gf_region_data rd; \ + uint8_t *s8; \ + uint8_t *d8; \ + \ + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } \ + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } \ + \ + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); \ + gf_do_initial_region_alignment(&rd); \ + s8 = (uint8_t *) rd.s_start; \ + d8 = (uint8_t *) rd.d_start; \ + \ + if (xor) \ + neon_clm_multiply_region_from_single_x (gf, s8, d8, val, rd.d_top, 1, x); \ + else \ + neon_clm_multiply_region_from_single_x (gf, s8, d8, val, rd.d_top, 0, x);\ + gf_do_final_region_alignment(&rd); \ +} + +CLM_MULT_REGION(2) +CLM_MULT_REGION(3) +CLM_MULT_REGION(4) + + +int gf_w8_neon_cfm_init(gf_t *gf) +{ + gf_internal_t *h; + + h = (gf_internal_t *) gf->scratch; + + if ((0xe0 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_neon_clm_multiply_2) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_neon_clm_multiply_region_from_single_2) + }else if ((0xc0 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_neon_clm_multiply_3) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_neon_clm_multiply_region_from_single_3) + }else if ((0x80 & h->prim_poly) == 0){ + SET_FUNCTION(gf,multiply,w32,gf_w8_neon_clm_multiply_4) + SET_FUNCTION(gf,multiply_region,w32,gf_w8_neon_clm_multiply_region_from_single_4) + }else{ + return 0; + } + return 1; +} + +#ifndef ARCH_AARCH64 +#define vqtbl1q_u8(tbl, v) vcombine_u8(vtbl2_u8(tbl, vget_low_u8(v)), \ + vtbl2_u8(tbl, vget_high_u8(v))) +#endif + +static +void +gf_w8_split_multiply_region_neon(gf_t *gf, void *src, void *dest, gf_val_32_t val, int bytes, int xor) +{ + uint8_t *bh, *bl, *sptr, *dptr; + uint8x16_t r, va, vh, vl, loset; +#ifdef ARCH_AARCH64 + uint8x16_t mth, mtl; +#else + uint8x8x2_t mth, mtl; +#endif + struct gf_w8_half_table_data *htd; + gf_region_data rd; + + if (val == 0) { gf_multby_zero(dest, bytes, xor); return; } + if (val == 1) { gf_multby_one(src, dest, bytes, xor); return; } + + htd = (struct gf_w8_half_table_data *) ((gf_internal_t *) (gf->scratch))->private; + + gf_set_region_data(&rd, gf, src, dest, bytes, val, xor, 16); + gf_do_initial_region_alignment(&rd); + + bh = (uint8_t *) htd->high; + bh += (val << 4); + bl = (uint8_t *) htd->low; + bl += (val << 4); + + sptr = rd.s_start; + dptr = rd.d_start; + +#ifdef ARCH_AARCH64 + mth = vld1q_u8 (bh); + mtl = vld1q_u8 (bl); +#else + mth.val[0] = vld1_u8 (bh); + mtl.val[0] = vld1_u8 (bl); + mth.val[1] = vld1_u8 (bh + 8); + mtl.val[1] = vld1_u8 (bl + 8); +#endif + + loset = vdupq_n_u8(0xf); + + if (xor) { + while (sptr < (uint8_t *) rd.s_top) { + va = vld1q_u8 (sptr); + + vh = vshrq_n_u8 (va, 4); + vl = vandq_u8 (va, loset); + va = vld1q_u8 (dptr); + + vh = vqtbl1q_u8 (mth, vh); + vl = vqtbl1q_u8 (mtl, vl); + + r = veorq_u8 (vh, vl); + + vst1q_u8 (dptr, veorq_u8 (va, r)); + + dptr += 16; + sptr += 16; + } + } else { + while (sptr < (uint8_t *) rd.s_top) { + va = vld1q_u8 (sptr); + + vh = vshrq_n_u8 (va, 4); + vl = vandq_u8 (va, loset); +#ifdef ARCH_AARCH64 + vh = vqtbl1q_u8 (mth, vh); + vl = vqtbl1q_u8 (mtl, vl); +#else + vh = vcombine_u8 (vtbl2_u8 (mth, vget_low_u8 (vh)), + vtbl2_u8 (mth, vget_high_u8 (vh))); + vl = vcombine_u8 (vtbl2_u8 (mtl, vget_low_u8 (vl)), + vtbl2_u8 (mtl, vget_high_u8 (vl))); +#endif + + r = veorq_u8 (vh, vl); + + vst1q_u8(dptr, r); + + dptr += 16; + sptr += 16; + } + } + + gf_do_final_region_alignment(&rd); +} + + +void gf_w8_neon_split_init(gf_t *gf) +{ + SET_FUNCTION(gf,multiply_region,w32,gf_w8_split_multiply_region_neon) +} diff --git a/src/erasure-code/jerasure/gf-complete/test/Makefile.am b/src/erasure-code/jerasure/gf-complete/test/Makefile.am new file mode 100644 index 00000000..f590ecca --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/test/Makefile.am @@ -0,0 +1,11 @@ +# GF-Complete 'test' AM file + +AM_CPPFLAGS = -I$(top_builddir)/include -I$(top_srcdir)/include +AM_CFLAGS = -O3 -fPIC + +bin_PROGRAMS = gf_unit + +gf_unit_SOURCES = gf_unit.c +#gf_unit_LDFLAGS = -lgf_complete +gf_unit_LDADD = ../src/libgf_complete.la + diff --git a/src/erasure-code/jerasure/gf-complete/test/gf_unit.c b/src/erasure-code/jerasure/gf-complete/test/gf_unit.c new file mode 100644 index 00000000..db26849d --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/test/gf_unit.c @@ -0,0 +1,458 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_unit.c + * + * Performs unit testing for gf arithmetic + */ + +#include "config.h" + +#ifdef HAVE_POSIX_MEMALIGN +#ifndef _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 +#endif +#endif + +#include +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_int.h" +#include "gf_method.h" +#include "gf_rand.h" +#include "gf_general.h" + +#define REGION_SIZE (16384) +#define RMASK (0x00000000ffffffffLL) +#define LMASK (0xffffffff00000000LL) + +void problem(char *s) +{ + fprintf(stderr, "Unit test failed.\n"); + fprintf(stderr, "%s\n", s); + exit(1); +} + +char *BM = "Bad Method: "; + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_unit w tests seed [method] - does unit testing in GF(2^w)\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Legal w are: 1 - 32, 64 and 128\n"); + fprintf(stderr, " 128 is hex only (i.e. '128' will be an error - do '128h')\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Tests may be any combination of:\n"); + fprintf(stderr, " A: All\n"); + fprintf(stderr, " S: Single operations (multiplication/division)\n"); + fprintf(stderr, " R: Region operations\n"); + fprintf(stderr, " V: Verbose Output\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Use -1 for time(0) as a seed.\n"); + fprintf(stderr, "\n"); + if (s == BM) { + fprintf(stderr, "%s", BM); + gf_error(); + } else if (s != NULL) { + fprintf(stderr, "%s\n", s); + } + exit(1); +} + +void SigHandler(int v) +{ + fprintf(stderr, "Problem: SegFault!\n"); + fflush(stdout); + exit(2); +} + +int main(int argc, char **argv) +{ + signal(SIGSEGV, SigHandler); + + int w, i, verbose, single, region, top; + int s_start, d_start, bytes, xor, alignment_test; + gf_t gf, gf_def; + time_t t0; + gf_internal_t *h; + gf_general_t *a, *b, *c, *d; + uint8_t a8, b8, c8, *mult4 = NULL, *mult8 = NULL; + uint16_t a16, b16, c16, *log16 = NULL, *alog16 = NULL; + char as[50], bs[50], cs[50], ds[50]; + uint32_t mask = 0; + char *ra, *rb, *rc, *rd, *target; + int align; +#ifndef HAVE_POSIX_MEMALIGN + char *malloc_ra, *malloc_rb, *malloc_rc, *malloc_rd; +#endif + + + if (argc < 4) usage(NULL); + + if (sscanf(argv[1], "%d", &w) == 0){ + usage("Bad w\n"); + } + + if (sscanf(argv[3], "%ld", &t0) == 0) usage("Bad seed\n"); + if (t0 == -1) t0 = time(0); + MOA_Seed(t0); + + if (w > 32 && w != 64 && w != 128) usage("Bad w"); + + if (create_gf_from_argv(&gf, w, argc, argv, 4) == 0) { + usage(BM); + } + + printf("Args: "); + for (i = 1; i < argc; i++) { + printf ("%s ", argv[i]); + } + printf("/ size (bytes): %d\n", gf_size(&gf)); + + for (i = 0; i < strlen(argv[2]); i++) { + if (strchr("ASRV", argv[2][i]) == NULL) usage("Bad test\n"); + } + + h = (gf_internal_t *) gf.scratch; + a = (gf_general_t *) malloc(sizeof(gf_general_t)); + b = (gf_general_t *) malloc(sizeof(gf_general_t)); + c = (gf_general_t *) malloc(sizeof(gf_general_t)); + d = (gf_general_t *) malloc(sizeof(gf_general_t)); + +#if HAVE_POSIX_MEMALIGN + if (posix_memalign((void **) &ra, 16, sizeof(char)*REGION_SIZE)) + ra = NULL; + if (posix_memalign((void **) &rb, 16, sizeof(char)*REGION_SIZE)) + rb = NULL; + if (posix_memalign((void **) &rc, 16, sizeof(char)*REGION_SIZE)) + rc = NULL; + if (posix_memalign((void **) &rd, 16, sizeof(char)*REGION_SIZE)) + rd = NULL; +#else + //15 bytes extra to make sure it's 16byte aligned + malloc_ra = (char *) malloc(sizeof(char)*REGION_SIZE+15); + malloc_rb = (char *) malloc(sizeof(char)*REGION_SIZE+15); + malloc_rc = (char *) malloc(sizeof(char)*REGION_SIZE+15); + malloc_rd = (char *) malloc(sizeof(char)*REGION_SIZE+15); + ra = (uint8_t *) (((uintptr_t) malloc_ra + 15) & ~((uintptr_t) 0xf)); + rb = (uint8_t *) (((uintptr_t) malloc_rb + 15) & ~((uintptr_t) 0xf)); + rc = (uint8_t *) (((uintptr_t) malloc_rc + 15) & ~((uintptr_t) 0xf)); + rd = (uint8_t *) (((uintptr_t) malloc_rd + 15) & ~((uintptr_t) 0xf)); +#endif + + if (w <= 32) { + mask = 0; + for (i = 0; i < w; i++) mask |= (1 << i); + } + + verbose = (strchr(argv[2], 'V') != NULL); + single = (strchr(argv[2], 'S') != NULL || strchr(argv[2], 'A') != NULL); + region = (strchr(argv[2], 'R') != NULL || strchr(argv[2], 'A') != NULL); + + if (!gf_init_hard(&gf_def, w, GF_MULT_DEFAULT, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT, + (h->mult_type != GF_MULT_COMPOSITE) ? h->prim_poly : 0, 0, 0, NULL, NULL)) + problem("No default for this value of w"); + + if (w == 4) { + mult4 = gf_w4_get_mult_table(&gf); + } else if (w == 8) { + mult8 = gf_w8_get_mult_table(&gf); + } else if (w == 16) { + log16 = gf_w16_get_log_table(&gf); + alog16 = gf_w16_get_mult_alog_table(&gf); + } + + if (verbose) printf("Seed: %ld\n", t0); + + if (single) { + + if (gf.multiply.w32 == NULL) problem("No multiplication operation defined."); + if (verbose) { printf("Testing single multiplications/divisions.\n"); fflush(stdout); } + if (w <= 10) { + top = (1 << w)*(1 << w); + } else { + top = 1024*1024; + } + for (i = 0; i < top; i++) { + if (w <= 10) { + a->w32 = i % (1 << w); + b->w32 = (i >> w); + + //Allen: the following conditions were being run 10 times each. That didn't seem like nearly enough to + //me for these special cases, so I converted to doing this mod stuff to easily make the number of times + //run both larger and proportional to the total size of the run. + } else { + switch (i % 32) + { + case 0: + gf_general_set_zero(a, w); + gf_general_set_random(b, w, 1); + break; + case 1: + gf_general_set_random(a, w, 1); + gf_general_set_zero(b, w); + break; + case 2: + gf_general_set_one(a, w); + gf_general_set_random(b, w, 1); + break; + case 3: + gf_general_set_random(a, w, 1); + gf_general_set_one(b, w); + break; + default: + gf_general_set_random(a, w, 1); + gf_general_set_random(b, w, 1); + } + } + + //Allen: the following special cases for w=64 are based on the code below for w=128. + //These w=64 cases are based on Dr. Plank's suggestion because some of the methods for w=64 + //involve splitting it in two. I think they're less likely to give errors than the 128-bit case + //though, because the 128 bit case is always split in two. + //As with w=128, I'm arbitrarily deciding to do this sort of thing with a quarter of the cases + if (w == 64) { + switch (i % 32) + { + case 0: if (!gf_general_is_one(a, w)) a->w64 &= RMASK; break; + case 1: if (!gf_general_is_one(a, w)) a->w64 &= LMASK; break; + case 2: if (!gf_general_is_one(a, w)) a->w64 &= RMASK; if (!gf_general_is_one(b, w)) b->w64 &= RMASK; break; + case 3: if (!gf_general_is_one(a, w)) a->w64 &= RMASK; if (!gf_general_is_one(b, w)) b->w64 &= LMASK; break; + case 4: if (!gf_general_is_one(a, w)) a->w64 &= LMASK; if (!gf_general_is_one(b, w)) b->w64 &= RMASK; break; + case 5: if (!gf_general_is_one(a, w)) a->w64 &= LMASK; if (!gf_general_is_one(b, w)) b->w64 &= LMASK; break; + case 6: if (!gf_general_is_one(b, w)) b->w64 &= RMASK; break; + case 7: if (!gf_general_is_one(b, w)) b->w64 &= LMASK; break; + } + } + + //Allen: for w=128, we have important special cases where one half or the other of the number is all + //zeros. The probability of hitting such a number randomly is 1^-64, so if we don't force these cases + //we'll probably never hit them. This could be implemented more efficiently by changing the set-random + //function for w=128, but I think this is easier to follow. + //I'm arbitrarily deciding to do this sort of thing with a quarter of the cases + if (w == 128) { + switch (i % 32) + { + case 0: if (!gf_general_is_one(a, w)) a->w128[0] = 0; break; + case 1: if (!gf_general_is_one(a, w)) a->w128[1] = 0; break; + case 2: if (!gf_general_is_one(a, w)) a->w128[0] = 0; if (!gf_general_is_one(b, w)) b->w128[0] = 0; break; + case 3: if (!gf_general_is_one(a, w)) a->w128[0] = 0; if (!gf_general_is_one(b, w)) b->w128[1] = 0; break; + case 4: if (!gf_general_is_one(a, w)) a->w128[1] = 0; if (!gf_general_is_one(b, w)) b->w128[0] = 0; break; + case 5: if (!gf_general_is_one(a, w)) a->w128[1] = 0; if (!gf_general_is_one(b, w)) b->w128[1] = 0; break; + case 6: if (!gf_general_is_one(b, w)) b->w128[0] = 0; break; + case 7: if (!gf_general_is_one(b, w)) b->w128[1] = 0; break; + } + } + + gf_general_multiply(&gf, a, b, c); + + /* If w is 4, 8 or 16, then there are inline multiplication/division methods. + Test them here. */ + + if (w == 4 && mult4 != NULL) { + a8 = a->w32; + b8 = b->w32; + c8 = GF_W4_INLINE_MULTDIV(mult4, a8, b8); + if (c8 != c->w32) { + printf("Error in inline multiplication. %d * %d. Inline = %d. Default = %d.\n", + a8, b8, c8, c->w32); + exit(1); + } + } + + if (w == 8 && mult8 != NULL) { + a8 = a->w32; + b8 = b->w32; + c8 = GF_W8_INLINE_MULTDIV(mult8, a8, b8); + if (c8 != c->w32) { + printf("Error in inline multiplication. %d * %d. Inline = %d. Default = %d.\n", + a8, b8, c8, c->w32); + exit(1); + } + } + + if (w == 16 && log16 != NULL) { + a16 = a->w32; + b16 = b->w32; + c16 = GF_W16_INLINE_MULT(log16, alog16, a16, b16); + if (c16 != c->w32) { + printf("Error in inline multiplication. %d * %d. Inline = %d. Default = %d.\n", + a16, b16, c16, c->w32); + printf("%d %d\n", log16[a16], log16[b16]); + top = log16[a16] + log16[b16]; + printf("%d %d\n", top, alog16[top]); + exit(1); + } + } + + /* If this is not composite, then first test against the default: */ + + if (h->mult_type != GF_MULT_COMPOSITE) { + gf_general_multiply(&gf_def, a, b, d); + + if (!gf_general_are_equal(c, d, w)) { + gf_general_val_to_s(a, w, as, 1); + gf_general_val_to_s(b, w, bs, 1); + gf_general_val_to_s(c, w, cs, 1); + gf_general_val_to_s(d, w, ds, 1); + printf("Error in single multiplication (all numbers in hex):\n\n"); + printf(" gf.multiply(gf, %s, %s) = %s\n", as, bs, cs); + printf(" The default gf multiplier returned %s\n", ds); + exit(1); + } + } + + /* Now, we also need to double-check by other means, in case the default is wanky, + and when we're performing composite operations. Start with 0 and 1, where we know + what the result should be. */ + + if (gf_general_is_zero(a, w) || gf_general_is_zero(b, w) || + gf_general_is_one(a, w) || gf_general_is_one(b, w)) { + if (((gf_general_is_zero(a, w) || gf_general_is_zero(b, w)) && !gf_general_is_zero(c, w)) || + (gf_general_is_one(a, w) && !gf_general_are_equal(b, c, w)) || + (gf_general_is_one(b, w) && !gf_general_are_equal(a, c, w))) { + gf_general_val_to_s(a, w, as, 1); + gf_general_val_to_s(b, w, bs, 1); + gf_general_val_to_s(c, w, cs, 1); + printf("Error in single multiplication (all numbers in hex):\n\n"); + printf(" gf.multiply(gf, %s, %s) = %s, which is clearly wrong.\n", as, bs, cs); + exit(1); + } + } + + /* Dumb check to make sure that it's not returning numbers that are too big: */ + + if (w < 32 && (c->w32 & mask) != c->w32) { + gf_general_val_to_s(a, w, as, 1); + gf_general_val_to_s(b, w, bs, 1); + gf_general_val_to_s(c, w, cs, 1); + printf("Error in single multiplication (all numbers in hex):\n\n"); + printf(" gf.multiply.w32(gf, %s, %s) = %s, which is too big.\n", as, bs, cs); + exit(1); + } + + /* Finally, let's check to see that multiplication and division work together */ + + if (!gf_general_is_zero(a, w)) { + gf_general_divide(&gf, c, a, d); + if (!gf_general_are_equal(b, d, w)) { + gf_general_val_to_s(a, w, as, 1); + gf_general_val_to_s(b, w, bs, 1); + gf_general_val_to_s(c, w, cs, 1); + gf_general_val_to_s(d, w, ds, 1); + printf("Error in single multiplication/division (all numbers in hex):\n\n"); + printf(" gf.multiply(gf, %s, %s) = %s, but gf.divide(gf, %s, %s) = %s\n", as, bs, cs, cs, as, ds); + exit(1); + } + } + + } + } + + if (region) { + if (verbose) { printf("Testing region multiplications\n"); fflush(stdout); } + for (i = 0; i < 1024; i++) { + //Allen: changing to a switch thing as with the single ops to make things proportional + switch (i % 32) + { + case 0: + gf_general_set_zero(a, w); + break; + case 1: + gf_general_set_one(a, w); + break; + case 2: + gf_general_set_two(a, w); + break; + default: + gf_general_set_random(a, w, 1); + } + MOA_Fill_Random_Region(ra, REGION_SIZE); + MOA_Fill_Random_Region(rb, REGION_SIZE); + xor = (i/32)%2; + align = w/8; + if (align == 0) align = 1; + if (align > 16) align = 16; + + /* JSP - Cauchy test. When w < 32 & it doesn't equal 4, 8 or 16, the default is + equal to GF_REGION_CAUCHY, even if GF_REGION_CAUCHY is not set. We are testing + three alignments here: + + 1. Anything goes -- no alignment guaranteed. + 2. Perfect alignment. Here src and dest must be aligned wrt each other, + and bytes must be a multiple of 16*w. + 3. Imperfect alignment. Here we'll have src and dest be aligned wrt each + other, but bytes is simply a multiple of w. That means some XOR's will + be aligned, and some won't. + */ + + if ((h->region_type & GF_REGION_CAUCHY) || (w < 32 && w != 4 && w != 8 && w != 16)) { + alignment_test = (i%3); + + s_start = MOA_Random_W(5, 1); + if (alignment_test == 0) { + d_start = MOA_Random_W(5, 1); + } else { + d_start = s_start; + } + + bytes = (d_start > s_start) ? REGION_SIZE - d_start : REGION_SIZE - s_start; + bytes -= MOA_Random_W(5, 1); + if (alignment_test == 1) { + bytes -= (bytes % (w*16)); + } else { + bytes -= (bytes % w); + } + + target = rb; + + /* JSP - Otherwise, we're testing a non-cauchy test, and alignment + must be more strict. We have to make sure that the regions are + aligned wrt each other on 16-byte pointers. */ + + } else { + s_start = MOA_Random_W(5, 1) * align; + d_start = s_start; + bytes = REGION_SIZE - s_start - MOA_Random_W(5, 1); + bytes -= (bytes % align); + + if (h->mult_type == GF_MULT_COMPOSITE && (h->region_type & GF_REGION_ALTMAP)) { + target = rb ; + } else { + target = (i/64)%2 ? rb : ra; + } + } + + memcpy(rc, ra, REGION_SIZE); + memcpy(rd, target, REGION_SIZE); + gf_general_do_region_multiply(&gf, a, ra+s_start, target+d_start, bytes, xor); + gf_general_do_region_check(&gf, a, rc+s_start, rd+d_start, target+d_start, bytes, xor); + } + } + + free(a); + free(b); + free(c); + free(d); +#ifdef HAVE_POSIX_MEMALIGN + free(ra); + free(rb); + free(rc); + free(rd); +#else + free(malloc_ra); + free(malloc_rb); + free(malloc_rc); + free(malloc_rd); +#endif + + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/Makefile.am b/src/erasure-code/jerasure/gf-complete/tools/Makefile.am new file mode 100644 index 00000000..4ca9131a --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/Makefile.am @@ -0,0 +1,56 @@ +# GF-Complete 'tools' AM file + +AM_CPPFLAGS = -I$(top_builddir)/include -I$(top_srcdir)/include +AM_CFLAGS = -O3 -fPIC + +bin_PROGRAMS = gf_mult gf_div gf_add gf_time gf_methods gf_poly gf_inline_time + +gf_mult_SOURCES = gf_mult.c +#gf_mult_LDFLAGS = -lgf_complete +gf_mult_LDADD = ../src/libgf_complete.la + +gf_div_SOURCES = gf_div.c +#gf_div_LDFLAGS = -lgf_complete +gf_div_LDADD = ../src/libgf_complete.la + +gf_add_SOURCES = gf_add.c +#gf_add_LDFLAGS = -lgf_complete +gf_add_LDADD = ../src/libgf_complete.la + +gf_time_SOURCES = gf_time.c +#gf_time_LDFLAGS = -lgf_complete +gf_time_LDADD = ../src/libgf_complete.la + +gf_methods_SOURCES = gf_methods.c +#gf_methods_LDFLAGS = -lgf_complete +gf_methods_LDADD = ../src/libgf_complete.la + +gf_poly_SOURCES = gf_poly.c +#gf_poly_LDFLAGS = -lgf_complete +gf_poly_LDADD = ../src/libgf_complete.la + +gf_inline_time_SOURCES = gf_inline_time.c +#gf_inline_time_LDFLAGS = -lgf_complete +gf_inline_time_LDADD = ../src/libgf_complete.la + +# gf_unit 8 A -1 -m LOG_ZERO_EXT is excluded until http://lab.jerasure.org/jerasure/gf-complete/issues/13 is resolved +if ENABLE_VALGRIND +VALGRIND = | perl -p -e 's|^|../libtool --mode=execute valgrind --quiet --error-exitcode=1 --tool=memcheck | if(!/gf_unit 8 A -1 -m LOG_ZERO_EXT/)' +endif + +# gf_unit tests as generated by gf_methods +gf_unit_w%.sh: gf_methods + ./$^ $(@:gf_unit_w%.sh=%) -A -U ${VALGRIND} > $@ || rm $@ + +TESTS = gf_unit_w128.sh \ + gf_unit_w64.sh \ + gf_unit_w32.sh \ + gf_unit_w16.sh \ + gf_unit_w8.sh \ + gf_unit_w4.sh + +TEST_EXTENSIONS = .sh +SH_LOG_COMPILER = $(SHELL) +AM_SH_LOG_FLAGS = -e + +CLEANFILES = $(TESTS) diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_add.c b/src/erasure-code/jerasure/gf-complete/tools/gf_add.c new file mode 100644 index 00000000..28cc12c1 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_add.c @@ -0,0 +1,114 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_add.c + * + * Adds two numbers in gf_2^w + */ + +#include +#include +#include +#include +#include + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_add a b w - does addition of a and b in GF(2^w)\n"); + fprintf(stderr, " If w has an h on the end, treat a, b and the sum as hexadecimal (no 0x required)\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " legal w are: 1-32, 64 and 128\n"); + fprintf(stderr, " 128 is hex only (i.e. '128' will be an error - do '128h')\n"); + + if (s != NULL) fprintf(stderr, "%s", s); + exit(1); +} + +int read_128(char *s, uint64_t *v) +{ + int l, t; + char save; + + l = strlen(s); + if (l > 32) return 0; + + if (l > 16) { + if (sscanf(s + (l-16), "%llx", (long long unsigned int *) &(v[1])) == 0) return 0; + save = s[l-16]; + s[l-16] = '\0'; + t = sscanf(s, "%llx", (long long unsigned int *) &(v[0])); + s[l-16] = save; + return t; + } else { + v[0] = 0; + return sscanf(s, "%llx", (long long unsigned int *)&(v[1])); + } + return 1; +} + +void print_128(uint64_t *v) +{ + if (v[0] > 0) { + printf("%llx", (long long unsigned int) v[0]); + printf("%016llx", (long long unsigned int) v[1]); + } else { + printf("%llx", (long long unsigned int) v[1]); + } + printf("\n"); +} + + +int main(int argc, char **argv) +{ + int hex, w; + uint32_t a, b, c, top; + uint64_t a64, b64, c64; + uint64_t a128[2], b128[2], c128[2]; + char *format; + + if (argc != 4) usage(NULL); + if (sscanf(argv[3], "%d", &w) == 0) usage("Bad w\n"); + + if (w <= 0 || (w > 32 && w != 64 && w != 128)) usage("Bad w"); + + hex = (strchr(argv[3], 'h') != NULL); + + if (!hex && w == 128) usage(NULL); + + if (w <= 32) { + format = (hex) ? "%x" : "%u"; + if (sscanf(argv[1], format, &a) == 0) usage("Bad a\n"); + if (sscanf(argv[2], format, &b) == 0) usage("Bad b\n"); + + if (w < 32) { + top = (w == 31) ? 0x80000000 : (1 << w); + if (w != 32 && a >= top) usage("a is too large\n"); + if (w != 32 && b >= top) usage("b is too large\n"); + } + + c = a ^ b; + printf(format, c); + printf("\n"); + + } else if (w == 64) { + format = (hex) ? "%llx" : "%llu"; + if (sscanf(argv[1], format, &a64) == 0) usage("Bad a\n"); + if (sscanf(argv[2], format, &b64) == 0) usage("Bad b\n"); + c64 = a64 ^ b64; + + printf(format, c64); + printf("\n"); + + } else if (w == 128) { + + if (read_128(argv[1], a128) == 0) usage("Bad a\n"); + if (read_128(argv[2], b128) == 0) usage("Bad b\n"); + c128[0] = a128[0] ^ b128[0]; + c128[1] = a128[1] ^ b128[1]; + + print_128(c128); + } + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_div.c b/src/erasure-code/jerasure/gf-complete/tools/gf_div.c new file mode 100644 index 00000000..9797f07d --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_div.c @@ -0,0 +1,68 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_div.c + * + * Multiplies two numbers in gf_2^w + */ + +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_method.h" +#include "gf_general.h" + +void usage(int why) +{ + fprintf(stderr, "usage: gf_div a b w [method] - does division of a and b in GF(2^w)\n"); + if (why == 'W') { + fprintf(stderr, "Bad w.\n"); + fprintf(stderr, "Legal w are: 1 - 32, 64 and 128.\n"); + fprintf(stderr, "Append 'h' to w to treat a, b and the quotient as hexadecimal.\n"); + fprintf(stderr, "w=128 is hex only (i.e. '128' will be an error - do '128h')\n"); + } + if (why == 'A') fprintf(stderr, "Bad a\n"); + if (why == 'B') fprintf(stderr, "Bad b\n"); + if (why == 'M') { + fprintf(stderr, "Bad Method Specification: "); + gf_error(); + } + exit(1); +} + +int main(int argc, char **argv) +{ + int hex, w; + gf_t gf; + gf_general_t a, b, c; + char output[50]; + + if (argc < 4) usage(' '); + + if (sscanf(argv[3], "%d", &w) == 0) usage('W'); + if (w <= 0 || (w > 32 && w != 64 && w != 128)) usage('W'); + + hex = (strchr(argv[3], 'h') != NULL); + if (!hex && w == 128) usage('W'); + + if (argc == 4) { + if (gf_init_easy(&gf, w) == 0) usage('M'); + } else { + if (create_gf_from_argv(&gf, w, argc, argv, 4) == 0) usage('M'); + } + + if (!gf_general_s_to_val(&a, w, argv[1], hex)) usage('A'); + if (!gf_general_s_to_val(&b, w, argv[2], hex)) usage('B'); + + gf_general_divide(&gf, &a, &b, &c); + gf_general_val_to_s(&c, w, output, hex); + + printf("%s\n", output); + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_inline_time.c b/src/erasure-code/jerasure/gf-complete/tools/gf_inline_time.c new file mode 100644 index 00000000..f8119da6 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_inline_time.c @@ -0,0 +1,170 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_inline_time.c + * + * Times inline single multiplication when w = 4, 8 or 16 + */ + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_rand.h" + +void +timer_start (double *t) +{ + struct timeval tv; + + gettimeofday (&tv, NULL); + *t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6; +} + +double +timer_split (const double *t) +{ + struct timeval tv; + double cur_t; + + gettimeofday (&tv, NULL); + cur_t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6; + return (cur_t - *t); +} + +void problem(char *s) +{ + fprintf(stderr, "Timing test failed.\n"); + fprintf(stderr, "%s\n", s); + exit(1); +} + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_inline_time w seed #elts iterations - does timing of single multiplies\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Legal w are: 4, 8 or 16\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Use -1 for time(0) as a seed.\n"); + fprintf(stderr, "\n"); + if (s != NULL) fprintf(stderr, "%s\n", s); + exit(1); +} + +int main(int argc, char **argv) +{ + int w, j, i, size, iterations; + gf_t gf; + double timer, elapsed, dnum, num; + uint8_t *ra = NULL, *rb = NULL, *mult4, *mult8; + uint16_t *ra16 = NULL, *rb16 = NULL, *log16, *alog16; + time_t t0; + + if (argc != 5) usage(NULL); + if (sscanf(argv[1], "%d", &w) == 0) usage("Bad w\n"); + if (w != 4 && w != 8 && w != 16) usage("Bad w\n"); + if (sscanf(argv[2], "%ld", &t0) == 0) usage("Bad seed\n"); + if (sscanf(argv[3], "%d", &size) == 0) usage("Bad #elts\n"); + if (sscanf(argv[4], "%d", &iterations) == 0) usage("Bad iterations\n"); + if (t0 == -1) t0 = time(0); + MOA_Seed(t0); + + num = size; + + gf_init_easy(&gf, w); + + printf("Seed: %ld\n", t0); + + if (w == 4 || w == 8) { + ra = (uint8_t *) malloc(size); + rb = (uint8_t *) malloc(size); + + if (ra == NULL || rb == NULL) { perror("malloc"); exit(1); } + } else if (w == 16) { + ra16 = (uint16_t *) malloc(size*2); + rb16 = (uint16_t *) malloc(size*2); + + if (ra16 == NULL || rb16 == NULL) { perror("malloc"); exit(1); } + } + + if (w == 4) { + mult4 = gf_w4_get_mult_table(&gf); + if (mult4 == NULL) { + printf("Couldn't get inline multiplication table.\n"); + exit(1); + } + elapsed = 0; + dnum = 0; + for (i = 0; i < iterations; i++) { + for (j = 0; j < size; j++) { + ra[j] = MOA_Random_W(w, 1); + rb[j] = MOA_Random_W(w, 1); + } + timer_start(&timer); + for (j = 0; j < size; j++) { + ra[j] = GF_W4_INLINE_MULTDIV(mult4, ra[j], rb[j]); + } + dnum += num; + elapsed += timer_split(&timer); + } + printf("Inline mult: %10.6lf s Mops: %10.3lf %10.3lf Mega-ops/s\n", + elapsed, dnum/1024.0/1024.0, dnum/1024.0/1024.0/elapsed); + + } else if (w == 8) { + mult8 = gf_w8_get_mult_table(&gf); + if (mult8 == NULL) { + printf("Couldn't get inline multiplication table.\n"); + exit(1); + } + elapsed = 0; + dnum = 0; + for (i = 0; i < iterations; i++) { + for (j = 0; j < size; j++) { + ra[j] = MOA_Random_W(w, 1); + rb[j] = MOA_Random_W(w, 1); + } + timer_start(&timer); + for (j = 0; j < size; j++) { + ra[j] = GF_W8_INLINE_MULTDIV(mult8, ra[j], rb[j]); + } + dnum += num; + elapsed += timer_split(&timer); + } + printf("Inline mult: %10.6lf s Mops: %10.3lf %10.3lf Mega-ops/s\n", + elapsed, dnum/1024.0/1024.0, dnum/1024.0/1024.0/elapsed); + } else if (w == 16) { + log16 = gf_w16_get_log_table(&gf); + alog16 = gf_w16_get_mult_alog_table(&gf); + if (log16 == NULL) { + printf("Couldn't get inline multiplication table.\n"); + exit(1); + } + elapsed = 0; + dnum = 0; + for (i = 0; i < iterations; i++) { + for (j = 0; j < size; j++) { + ra16[j] = MOA_Random_W(w, 1); + rb16[j] = MOA_Random_W(w, 1); + } + timer_start(&timer); + for (j = 0; j < size; j++) { + ra16[j] = GF_W16_INLINE_MULT(log16, alog16, ra16[j], rb16[j]); + } + dnum += num; + elapsed += timer_split(&timer); + } + printf("Inline mult: %10.6lf s Mops: %10.3lf %10.3lf Mega-ops/s\n", + elapsed, dnum/1024.0/1024.0, dnum/1024.0/1024.0/elapsed); + } + free (ra); + free (rb); + free (ra16); + free (rb16); + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_methods.c b/src/erasure-code/jerasure/gf-complete/tools/gf_methods.c new file mode 100644 index 00000000..b016c33c --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_methods.c @@ -0,0 +1,246 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_methods.c + * + * Lists supported methods (incomplete w.r.t. GROUP and COMPOSITE) + */ + +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_method.h" +#include "gf_int.h" + +#define BNMULTS (8) +static char *BMULTS[BNMULTS] = { "CARRY_FREE", "GROUP48", + "TABLE", "LOG", "SPLIT4", "SPLIT8", "SPLIT88", "COMPOSITE" }; +#define NMULTS (17) +static char *MULTS[NMULTS] = { "SHIFT", "CARRY_FREE", "CARRY_FREE_GK", "GROUP44", "GROUP48", "BYTWO_p", "BYTWO_b", + "TABLE", "LOG", "LOG_ZERO", "LOG_ZERO_EXT", "SPLIT2", + "SPLIT4", "SPLIT8", "SPLIT16", "SPLIT88", "COMPOSITE" }; + +/* Make sure CAUCHY is last */ + +#define NREGIONS (7) +static char *REGIONS[NREGIONS] = { "DOUBLE", "QUAD", "LAZY", "SIMD", "NOSIMD", + "ALTMAP", "CAUCHY" }; + +#define BNREGIONS (4) +static char *BREGIONS[BNREGIONS] = { "DOUBLE", "QUAD", "ALTMAP", "CAUCHY" }; + +#define NDIVS (2) +static char *divides[NDIVS] = { "MATRIX", "EUCLID" }; + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_methods w -BADC -LXUMDRB\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " w can be 1-32, 64, 128\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " -B lists basic methods that are useful\n"); + fprintf(stderr, " -A does a nearly exhaustive listing\n"); + fprintf(stderr, " -D adds EUCLID and MATRIX division\n"); + fprintf(stderr, " -C adds CAUCHY when possible\n"); + fprintf(stderr, " Combinations are fine.\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " -L Simply lists methods\n"); + fprintf(stderr, " -X List methods and functions selected (compile with DEBUG_FUNCTIONS)\n"); + fprintf(stderr, " -U Produces calls to gf_unit\n"); + fprintf(stderr, " -M Produces calls to time_tool.sh for single multiplications\n"); + fprintf(stderr, " -D Produces calls to time_tool.sh for single divisions\n"); + fprintf(stderr, " -R Produces calls to time_tool.sh for region multiplications\n"); + fprintf(stderr, " -B Produces calls to time_tool.sh for the fastest region multiplications\n"); + fprintf(stderr, " Cannot combine L, U, T.\n"); + if (s != NULL) { + fprintf(stderr, "\n"); + fprintf(stderr, "%s\n", s); + } + exit(1); +} + +void print_methods(gf_t *gf) +{ +#ifdef DEBUG_FUNCTIONS + gf_internal_t *h = (gf_internal_t*) gf->scratch; + + printf("multiply = %s\n", h->multiply); + printf("divide = %s\n", h->divide); + printf("inverse = %s\n", h->inverse); + printf("multiply_region = %s\n", h->multiply_region); + printf("extract_word = %s\n", h->extract_word); +#endif +} + +int main(int argc, char *argv[]) +{ + int m, r, d, w, i, sa, j, k, reset, ok; + int nregions; + int nmults; + char **regions; + char **mults; + int exhaustive = 0; + int divide = 0; + int cauchy = 0; + int listing; + char *gf_argv[50], *x; + gf_t gf; + char ls[10]; + char * w_str; + + if (argc != 4) usage(NULL); + w = atoi(argv[1]); + ok = (w >= 1 && w <= 32); + if (w == 64) ok = 1; + if (w == 128) ok = 1; + if (!ok) usage("Bad w"); + + if (argv[2][0] != '-' || argv[3][0] != '-' || strlen(argv[2]) == 1 || strlen(argv[3]) != 2) { + usage(NULL); + } + for (i = 1; argv[2][i] != '\0'; i++) { + switch(argv[2][i]) { + case 'B': exhaustive = 0; break; + case 'A': exhaustive = 1; break; + case 'D': divide = 1; break; + case 'C': cauchy = 1; break; + default: usage("Bad -BADC"); + } + } + + if (strchr("LXUMDRB", argv[3][1]) == NULL) { usage("Bad -LXUMDRB"); } + listing = argv[3][1]; + + if (listing == 'U') { + w_str = "../test/gf_unit %d A -1"; + } else if (listing == 'L' || listing == 'X') { + w_str = "w=%d:"; + } else { + w_str = strdup("sh time_tool.sh X %d"); + x = strchr(w_str, 'X'); + *x = listing; + } + + gf_argv[0] = "-"; + if (create_gf_from_argv(&gf, w, 1, gf_argv, 0) > 0) { + printf(w_str, w); + printf(" - \n"); + gf_free(&gf, 1); + } else if (_gf_errno == GF_E_DEFAULT) { + fprintf(stderr, "Unlabeled failed method: w=%d: -\n", 2); + exit(1); + } + + nregions = (exhaustive) ? NREGIONS : BNREGIONS; + if (!cauchy) nregions--; + regions = (exhaustive) ? REGIONS : BREGIONS; + mults = (exhaustive) ? MULTS : BMULTS; + nmults = (exhaustive) ? NMULTS : BNMULTS; + + + for (m = 0; m < nmults; m++) { + sa = 0; + gf_argv[sa++] = "-m"; + if (strcmp(mults[m], "GROUP44") == 0) { + gf_argv[sa++] = "GROUP"; + gf_argv[sa++] = "4"; + gf_argv[sa++] = "4"; + } else if (strcmp(mults[m], "GROUP48") == 0) { + gf_argv[sa++] = "GROUP"; + gf_argv[sa++] = "4"; + gf_argv[sa++] = "8"; + } else if (strcmp(mults[m], "SPLIT2") == 0) { + gf_argv[sa++] = "SPLIT"; + sprintf(ls, "%d", w); + gf_argv[sa++] = ls; + gf_argv[sa++] = "2"; + } else if (strcmp(mults[m], "SPLIT4") == 0) { + gf_argv[sa++] = "SPLIT"; + sprintf(ls, "%d", w); + gf_argv[sa++] = ls; + gf_argv[sa++] = "4"; + } else if (strcmp(mults[m], "SPLIT8") == 0) { + gf_argv[sa++] = "SPLIT"; + sprintf(ls, "%d", w); + gf_argv[sa++] = ls; + gf_argv[sa++] = "8"; + } else if (strcmp(mults[m], "SPLIT16") == 0) { + gf_argv[sa++] = "SPLIT"; + sprintf(ls, "%d", w); + gf_argv[sa++] = ls; + gf_argv[sa++] = "16"; + } else if (strcmp(mults[m], "SPLIT88") == 0) { + gf_argv[sa++] = "SPLIT"; + gf_argv[sa++] = "8"; + gf_argv[sa++] = "8"; + } else if (strcmp(mults[m], "COMPOSITE") == 0) { + gf_argv[sa++] = "COMPOSITE"; + gf_argv[sa++] = "2"; + gf_argv[sa++] = "-"; + } else { + gf_argv[sa++] = mults[m]; + } + reset = sa; + + + for (r = 0; r < (1 << nregions); r++) { + sa = reset; + for (k = 0; k < nregions; k++) { + if (r & (1 << k)) { + gf_argv[sa++] = "-r"; + gf_argv[sa++] = regions[k]; + } + } + gf_argv[sa++] = "-"; + + /* printf("Hmmmm. %s", gf_argv[0]); + for (j = 0; j < sa; j++) printf(" %s", gf_argv[j]); + printf("\n"); */ + + if (create_gf_from_argv(&gf, w, sa, gf_argv, 0) > 0) { + printf(w_str, w); + for (j = 0; j < sa; j++) printf(" %s", gf_argv[j]); + printf("\n"); + if (listing == 'X') + print_methods(&gf); + gf_free(&gf, 1); + } else if (_gf_errno == GF_E_DEFAULT) { + fprintf(stderr, "Unlabeled failed method: w=%d:", w); + for (j = 0; j < sa; j++) fprintf(stderr, " %s", gf_argv[j]); + fprintf(stderr, "\n"); + exit(1); + } + sa--; + if (divide) { + for (d = 0; d < NDIVS; d++) { + gf_argv[sa++] = "-d"; + gf_argv[sa++] = divides[d]; + /* printf("w=%d:", w); + for (j = 0; j < sa; j++) printf(" %s", gf_argv[j]); + printf("\n"); */ + gf_argv[sa++] = "-"; + if (create_gf_from_argv(&gf, w, sa, gf_argv, 0) > 0) { + printf(w_str, w); + for (j = 0; j < sa; j++) printf(" %s", gf_argv[j]); + printf("\n"); + if (listing == 'X') + print_methods(&gf); + gf_free(&gf, 1); + } else if (_gf_errno == GF_E_DEFAULT) { + fprintf(stderr, "Unlabeled failed method: w=%d:", w); + for (j = 0; j < sa; j++) fprintf(stderr, " %s", gf_argv[j]); + fprintf(stderr, "\n"); + exit(1); + } + sa-=3; + } + } + } + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_mult.c b/src/erasure-code/jerasure/gf-complete/tools/gf_mult.c new file mode 100644 index 00000000..815bd8b2 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_mult.c @@ -0,0 +1,68 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_mult.c + * + * Multiplies two numbers in gf_2^w + */ + +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_method.h" +#include "gf_general.h" + +void usage(int why) +{ + fprintf(stderr, "usage: gf_mult a b w [method] - does multiplication of a and b in GF(2^w)\n"); + if (why == 'W') { + fprintf(stderr, "Bad w.\n"); + fprintf(stderr, "Legal w are: 1 - 32, 64 and 128.\n"); + fprintf(stderr, "Append 'h' to w to treat a, b and the product as hexadecimal.\n"); + fprintf(stderr, "w=128 is hex only (i.e. '128' will be an error - do '128h')\n"); + } + if (why == 'A') fprintf(stderr, "Bad a\n"); + if (why == 'B') fprintf(stderr, "Bad b\n"); + if (why == 'M') { + fprintf(stderr, "Bad Method Specification: "); + gf_error(); + } + exit(1); +} + +int main(int argc, char **argv) +{ + int hex, w; + gf_t gf; + gf_general_t a, b, c; + char output[50]; + + if (argc < 4) usage(' '); + + if (sscanf(argv[3], "%d", &w) == 0) usage('W'); + if (w <= 0 || (w > 32 && w != 64 && w != 128)) usage('W'); + + hex = (strchr(argv[3], 'h') != NULL); + if (!hex && w == 128) usage('W'); + + if (argc == 4) { + if (gf_init_easy(&gf, w) == 0) usage('M'); + } else { + if (create_gf_from_argv(&gf, w, argc, argv, 4) == 0) usage('M'); + } + + if (!gf_general_s_to_val(&a, w, argv[1], hex)) usage('A'); + if (!gf_general_s_to_val(&b, w, argv[2], hex)) usage('B'); + + gf_general_multiply(&gf, &a, &b, &c); + gf_general_val_to_s(&c, w, output, hex); + + printf("%s\n", output); + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_poly.c b/src/erasure-code/jerasure/gf-complete/tools/gf_poly.c new file mode 100644 index 00000000..b3faf254 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_poly.c @@ -0,0 +1,275 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_poly.c - program to help find irreducible polynomials in composite fields, + * using the Ben-Or algorithm. + * + * (This one was written by Jim) + * + * Please see the following paper for a description of the Ben-Or algorithm: + * + * author S. Gao and D. Panario + * title Tests and Constructions of Irreducible Polynomials over Finite Fields + * booktitle Foundations of Computational Mathematics + * year 1997 + * publisher Springer Verlag + * pages 346-361 + * + * The basic technique is this. You have a polynomial f(x) whose coefficients are + * in a base field GF(2^w). The polynomial is of degree n. You need to do the + * following for all i from 1 to n/2: + * + * Construct x^(2^w)^i modulo f. That will be a polynomial of maximum degree n-1 + * with coefficients in GF(2^w). You construct that polynomial by starting with x + * and doubling it w times, each time taking the result modulo f. Then you + * multiply that by itself i times, again each time taking the result modulo f. + * + * When you're done, you need to "subtract" x -- since addition = subtraction = + * XOR, that means XOR x. + * + * Now, find the GCD of that last polynomial and f, using Euclid's algorithm. If + * the GCD is not one, then f is reducible. If it is not reducible for each of + * those i, then it is irreducible. + * + * In this code, I am using a gf_general_t to represent elements of GF(2^w). This + * is so that I can use base fields that are GF(2^64) or GF(2^128). + * + * I have two main procedures. The first is x_to_q_to_i_minus_x, which calculates + * x^(2^w)^i - x, putting the result into a gf_general_t * called retval. + * + * The second is gcd_one, which takes a polynomial of degree n and a second one + * of degree n-1, and uses Euclid's algorithm to decide if their GCD == 1. + * + * These can be made faster (e.g. calculate x^(2^w) once and store it). + */ + +#include "gf_complete.h" +#include "gf_method.h" +#include "gf_general.h" +#include "gf_int.h" +#include +#include +#include +#include + +char *BM = "Bad Method: "; + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_poly w(base-field) method power:coef [ power:coef .. ]\n"); + fprintf(stderr, "\n"); + fprintf(stderr, " use - for the default method.\n"); + fprintf(stderr, " use 0x in front of the coefficient if it's in hex\n"); + fprintf(stderr, " \n"); + fprintf(stderr, " For example, to test whether x^2 + 2x + 1 is irreducible\n"); + fprintf(stderr, " in GF(2^16), the call is:\n"); + fprintf(stderr, " \n"); + fprintf(stderr, " gf_poly 16 - 2:1 1:2 0:1\n"); + fprintf(stderr, " \n"); + fprintf(stderr, " See the user's manual for more information.\n"); + if (s != NULL) { + fprintf(stderr, "\n"); + if (s == BM) { + fprintf(stderr, "%s", s); + gf_error(); + } else { + fprintf(stderr, "%s\n", s); + } + } + exit(1); +} + +int gcd_one(gf_t *gf, int w, int n, gf_general_t *poly, gf_general_t *prod) +{ + gf_general_t *a, *b, zero, factor, p; + int i, j, da, db; + + gf_general_set_zero(&zero, w); + + a = (gf_general_t *) malloc(sizeof(gf_general_t) * n+1); + b = (gf_general_t *) malloc(sizeof(gf_general_t) * n); + for (i = 0; i <= n; i++) gf_general_add(gf, &zero, poly+i, a+i); + for (i = 0; i < n; i++) gf_general_add(gf, &zero, prod+i, b+i); + + da = n; + while (1) { + for (db = n-1; db >= 0 && gf_general_is_zero(b+db, w); db--) ; + if (db < 0) return 0; + if (db == 0) return 1; + for (j = da; j >= db; j--) { + if (!gf_general_is_zero(a+j, w)) { + gf_general_divide(gf, a+j, b+db, &factor); + for (i = 0; i <= db; i++) { + gf_general_multiply(gf, b+i, &factor, &p); + gf_general_add(gf, &p, a+(i+j-db), a+(i+j-db)); + } + } + } + for (i = 0; i < n; i++) { + gf_general_add(gf, a+i, &zero, &p); + gf_general_add(gf, b+i, &zero, a+i); + gf_general_add(gf, &p, &zero, b+i); + } + } + +} + +void x_to_q_to_i_minus_x(gf_t *gf, int w, int n, gf_general_t *poly, int logq, int i, gf_general_t *retval) +{ + gf_general_t x; + gf_general_t *x_to_q; + gf_general_t *product; + gf_general_t p, zero, factor; + int j, k, lq; + + gf_general_set_zero(&zero, w); + product = (gf_general_t *) malloc(sizeof(gf_general_t) * n*2); + x_to_q = (gf_general_t *) malloc(sizeof(gf_general_t) * n); + for (j = 0; j < n; j++) gf_general_set_zero(x_to_q+j, w); + gf_general_set_one(x_to_q+1, w); + + for (lq = 0; lq < logq; lq++) { + for (j = 0; j < n*2; j++) gf_general_set_zero(product+j, w); + for (j = 0; j < n; j++) { + for (k = 0; k < n; k++) { + gf_general_multiply(gf, x_to_q+j, x_to_q+k, &p); + gf_general_add(gf, product+(j+k), &p, product+(j+k)); + } + } + for (j = n*2-1; j >= n; j--) { + if (!gf_general_is_zero(product+j, w)) { + gf_general_add(gf, product+j, &zero, &factor); + for (k = 0; k <= n; k++) { + gf_general_multiply(gf, poly+k, &factor, &p); + gf_general_add(gf, product+(j-n+k), &p, product+(j-n+k)); + } + } + } + for (j = 0; j < n; j++) gf_general_add(gf, product+j, &zero, x_to_q+j); + } + for (j = 0; j < n; j++) gf_general_set_zero(retval+j, w); + gf_general_set_one(retval, w); + + while (i > 0) { + for (j = 0; j < n*2; j++) gf_general_set_zero(product+j, w); + for (j = 0; j < n; j++) { + for (k = 0; k < n; k++) { + gf_general_multiply(gf, x_to_q+j, retval+k, &p); + gf_general_add(gf, product+(j+k), &p, product+(j+k)); + } + } + for (j = n*2-1; j >= n; j--) { + if (!gf_general_is_zero(product+j, w)) { + gf_general_add(gf, product+j, &zero, &factor); + for (k = 0; k <= n; k++) { + gf_general_multiply(gf, poly+k, &factor, &p); + gf_general_add(gf, product+(j-n+k), &p, product+(j-n+k)); + } + } + } + for (j = 0; j < n; j++) gf_general_add(gf, product+j, &zero, retval+j); + i--; + } + + gf_general_set_one(&x, w); + gf_general_add(gf, &x, retval+1, retval+1); + + free(product); + free(x_to_q); +} + +int main(int argc, char **argv) +{ + int w, i, power, n, ap, success; + gf_t gf; + gf_general_t *poly, *prod; + char *string, *ptr; + char buf[100]; + + if (argc < 4) usage(NULL); + + if (sscanf(argv[1], "%d", &w) != 1 || w <= 0) usage("Bad w."); + ap = create_gf_from_argv(&gf, w, argc, argv, 2); + + if (ap == 0) usage(BM); + + if (ap == argc) usage("No powers/coefficients given."); + + n = -1; + for (i = ap; i < argc; i++) { + if (strchr(argv[i], ':') == NULL || sscanf(argv[i], "%d:", &power) != 1) { + string = (char *) malloc(sizeof(char)*(strlen(argv[i]+100))); + sprintf(string, "Argument '%s' not in proper format of power:coefficient\n", argv[i]); + usage(string); + } + if (power < 0) { + usage("Can't have negative powers\n"); + } else { + n = power; + } + } + // in case the for-loop header fails + assert (n >= 0); + + poly = (gf_general_t *) malloc(sizeof(gf_general_t)*(n+1)); + for (i = 0; i <= n; i++) gf_general_set_zero(poly+i, w); + prod = (gf_general_t *) malloc(sizeof(gf_general_t)*n); + + for (i = ap; i < argc; i++) { + sscanf(argv[i], "%d:", &power); + ptr = strchr(argv[i], ':'); + ptr++; + if (strncmp(ptr, "0x", 2) == 0) { + success = gf_general_s_to_val(poly+power, w, ptr+2, 1); + } else { + success = gf_general_s_to_val(poly+power, w, ptr, 0); + } + if (success == 0) { + string = (char *) malloc(sizeof(char)*(strlen(argv[i]+100))); + sprintf(string, "Argument '%s' not in proper format of power:coefficient\n", argv[i]); + usage(string); + } + } + + printf("Poly:"); + for (power = n; power >= 0; power--) { + if (!gf_general_is_zero(poly+power, w)) { + printf("%s", (power == n) ? " " : " + "); + if (!gf_general_is_one(poly+power, w)) { + gf_general_val_to_s(poly+power, w, buf, 1); + if (n > 0) { + printf("(0x%s)", buf); + } else { + printf("0x%s", buf); + } + } + if (power == 0) { + if (gf_general_is_one(poly+power, w)) printf("1"); + } else if (power == 1) { + printf("x"); + } else { + printf("x^%d", power); + } + } + } + printf("\n"); + + if (!gf_general_is_one(poly+n, w)) { + printf("\n"); + printf("Can't do Ben-Or, because the polynomial is not monic.\n"); + exit(0); + } + + for (i = 1; i <= n/2; i++) { + x_to_q_to_i_minus_x(&gf, w, n, poly, w, i, prod); + if (!gcd_one(&gf, w, n, poly, prod)) { + printf("Reducible.\n"); + exit(0); + } + } + + printf("Irreducible.\n"); + exit(0); +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/gf_time.c b/src/erasure-code/jerasure/gf-complete/tools/gf_time.c new file mode 100644 index 00000000..7402ab5c --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/gf_time.c @@ -0,0 +1,232 @@ +/* + * GF-Complete: A Comprehensive Open Source Library for Galois Field Arithmetic + * James S. Plank, Ethan L. Miller, Kevin M. Greenan, + * Benjamin A. Arnold, John A. Burnum, Adam W. Disney, Allen C. McBride. + * + * gf_time.c + * + * Performs timing for gf arithmetic + */ + +#include "config.h" + +#ifdef HAVE_POSIX_MEMALIGN +#ifndef _XOPEN_SOURCE +#define _XOPEN_SOURCE 600 +#endif +#endif + +#include +#include +#include +#include +#include +#include + +#include "gf_complete.h" +#include "gf_method.h" +#include "gf_rand.h" +#include "gf_general.h" + +void +timer_start (double *t) +{ + struct timeval tv; + + gettimeofday (&tv, NULL); + *t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6; +} + +double +timer_split (const double *t) +{ + struct timeval tv; + double cur_t; + + gettimeofday (&tv, NULL); + cur_t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6; + return (cur_t - *t); +} + +void problem(char *s) +{ + fprintf(stderr, "Timing test failed.\n"); + fprintf(stderr, "%s\n", s); + exit(1); +} + +char *BM = "Bad Method: "; + +void usage(char *s) +{ + fprintf(stderr, "usage: gf_time w tests seed size(bytes) iterations [method [params]] - does timing\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "does unit testing in GF(2^w)\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Legal w are: 1 - 32, 64 and 128\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Tests may be any combination of:\n"); + fprintf(stderr, " A: All\n"); + fprintf(stderr, " S: All Single Operations\n"); + fprintf(stderr, " R: All Region Operations\n"); + fprintf(stderr, " M: Single: Multiplications\n"); + fprintf(stderr, " D: Single: Divisions\n"); + fprintf(stderr, " I: Single: Inverses\n"); + fprintf(stderr, " G: Region: Buffer-Constant Multiplication\n"); + fprintf(stderr, " 0: Region: Doing nothing, and bzero()\n"); + fprintf(stderr, " 1: Region: Memcpy() and XOR\n"); + fprintf(stderr, " 2: Region: Multiplying by two\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "Use -1 for time(0) as a seed.\n"); + fprintf(stderr, "\n"); + if (s == BM) { + fprintf(stderr, "%s", BM); + gf_error(); + } else if (s != NULL) { + fprintf(stderr, "%s\n", s); + } + exit(1); +} + +int main(int argc, char **argv) +{ + int w, it, i, size, iterations, xor; + char tests[100]; + char test; + char *single_tests = "MDI"; + char *region_tests = "G012"; + char *tstrings[256]; + void *tmethods[256]; + gf_t gf; + double timer, elapsed, ds, di, dnum; + int num; + time_t t0; + uint8_t *ra, *rb; + gf_general_t a; +#ifndef HAVE_POSIX_MEMALIGN + uint8_t *malloc_ra, *malloc_rb; +#endif + + + if (argc < 6) usage(NULL); + + if (sscanf(argv[1], "%d", &w) == 0){ + usage("Bad w[-pp]\n"); + } + + + if (sscanf(argv[3], "%ld", &t0) == 0) usage("Bad seed\n"); + if (sscanf(argv[4], "%d", &size) == 0) usage("Bad size\n"); + if (sscanf(argv[5], "%d", &iterations) == 0) usage("Bad iterations\n"); + if (t0 == -1) t0 = time(0); + MOA_Seed(t0); + + ds = size; + di = iterations; + + if ((w > 32 && w != 64 && w != 128) || w < 0) usage("Bad w"); + if ((size * 8) % w != 0) usage ("Bad size -- must be a multiple of w*8\n"); + + if (!create_gf_from_argv(&gf, w, argc, argv, 6)) usage(BM); + + strcpy(tests, ""); + for (i = 0; argv[2][i] != '\0'; i++) { + switch(argv[2][i]) { + case 'A': strcat(tests, single_tests); + strcat(tests, region_tests); + break; + case 'S': strcat(tests, single_tests); break; + case 'R': strcat(tests, region_tests); break; + case 'G': strcat(tests, "G"); break; + case '0': strcat(tests, "0"); break; + case '1': strcat(tests, "1"); break; + case '2': strcat(tests, "2"); break; + case 'M': strcat(tests, "M"); break; + case 'D': strcat(tests, "D"); break; + case 'I': strcat(tests, "I"); break; + default: usage("Bad tests"); + } + } + + tstrings['M'] = "Multiply"; + tstrings['D'] = "Divide"; + tstrings['I'] = "Inverse"; + tstrings['G'] = "Region-Random"; + tstrings['0'] = "Region-By-Zero"; + tstrings['1'] = "Region-By-One"; + tstrings['2'] = "Region-By-Two"; + + tmethods['M'] = (void *) gf.multiply.w32; + tmethods['D'] = (void *) gf.divide.w32; + tmethods['I'] = (void *) gf.inverse.w32; + tmethods['G'] = (void *) gf.multiply_region.w32; + tmethods['0'] = (void *) gf.multiply_region.w32; + tmethods['1'] = (void *) gf.multiply_region.w32; + tmethods['2'] = (void *) gf.multiply_region.w32; + + printf("Seed: %ld\n", t0); + +#ifdef HAVE_POSIX_MEMALIGN + if (posix_memalign((void **) &ra, 16, size)) + ra = NULL; + if (posix_memalign((void **) &rb, 16, size)) + rb = NULL; +#else + malloc_ra = (uint8_t *) malloc(size + 15); + malloc_rb = (uint8_t *) malloc(size + 15); + ra = (uint8_t *) (((uintptr_t) malloc_ra + 15) & ~((uintptr_t) 0xf)); + rb = (uint8_t *) (((uintptr_t) malloc_rb + 15) & ~((uintptr_t) 0xf)); +#endif + + if (ra == NULL || rb == NULL) { perror("malloc"); exit(1); } + + for (i = 0; i < 3; i++) { + test = single_tests[i]; + if (strchr(tests, test) != NULL) { + if (tmethods[(int)test] == NULL) { + printf("No %s method.\n", tstrings[(int)test]); + } else { + elapsed = 0; + dnum = 0; + for (it = 0; it < iterations; it++) { + gf_general_set_up_single_timing_test(w, ra, rb, size); + timer_start(&timer); + num = gf_general_do_single_timing_test(&gf, ra, rb, size, test); + dnum += num; + elapsed += timer_split(&timer); + } + printf("%14s: %10.6lf s Mops: %10.3lf %10.3lf Mega-ops/s\n", + tstrings[(int)test], elapsed, + dnum/1024.0/1024.0, dnum/1024.0/1024.0/elapsed); + } + } + } + + for (i = 0; i < 4; i++) { + test = region_tests[i]; + if (strchr(tests, test) != NULL) { + if (tmethods[(int)test] == NULL) { + printf("No %s method.\n", tstrings[(int)test]); + } else { + if (test == '0') gf_general_set_zero(&a, w); + if (test == '1') gf_general_set_one(&a, w); + if (test == '2') gf_general_set_two(&a, w); + + for (xor = 0; xor < 2; xor++) { + elapsed = 0; + for (it = 0; it < iterations; it++) { + if (test == 'G') gf_general_set_random(&a, w, 1); + gf_general_set_up_single_timing_test(8, ra, rb, size); + timer_start(&timer); + gf_general_do_region_multiply(&gf, &a, ra, rb, size, xor); + elapsed += timer_split(&timer); + } + printf("%14s: XOR: %d %10.6lf s MB: %10.3lf %10.3lf MB/s\n", + tstrings[(int)test], xor, elapsed, + ds*di/1024.0/1024.0, ds*di/1024.0/1024.0/elapsed); + } + } + } + } + return 0; +} diff --git a/src/erasure-code/jerasure/gf-complete/tools/test_simd.sh b/src/erasure-code/jerasure/gf-complete/tools/test_simd.sh new file mode 100755 index 00000000..e514e4f6 --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/test_simd.sh @@ -0,0 +1,367 @@ +#!/bin/bash -e + +# this scripts has a number of tests for SIMD. It can be invoked +# on the host or on a QEMU machine. + +script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" +host_cpu=`uname -p` +results=${script_dir}/test_simd.results +nprocs=$(grep -c ^processor /proc/cpuinfo) + +# runs unit tests and save the results +test_unit(){ + { ./configure && make clean && make; } || { echo "Compile FAILED" >> ${results}; return 1; } + make -j$nprocs check || { echo "gf_methods $i FAILED" >> ${results}; ((++failed)); } + cat tools/test-suite.log >> ${results} || true +} + +# build with DEBUG_FUNCTIONS and save all methods selected +# to a results file +test_functions() { + failed=0 + + { ./configure --enable-debug-func && make clean && make; } || { echo "Compile FAILED" >> ${results}; return 1; } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${results}; } || { echo "gf_methods $i FAILED" >> ${results}; ((++failed)); } + done + + return ${failed} +} + +# build with DEBUG_CPU_FUNCTIONS and print out CPU detection +test_detection() { + failed=0 + + { ./configure --enable-debug-cpu && make clean && make; } || { echo "Compile FAILED" >> ${results}; return 1; } + { ${script_dir}/gf_methods 32 -ACD -L | grep '#' >> ${results}; } || { echo "gf_methods $i FAILED" >> ${results}; ((++failed)); } + + return ${failed} +} + +compile_arm() { + failed=0 + + echo -n "Compiling with NO SIMD support..." >> ${results} + { ./configure --disable-neon && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with FULL SIMD support..." >> ${results} + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + return ${failed} +} + +compile_intel() { + failed=0 + + echo -n "Compiling with NO SIMD support..." >> ${results} + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with SSE2 only..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=no + export ax_cv_have_ssse3_ext=no + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with SSE2,SSE3 only..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=no + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with SSE2,SSE3,SSSE3 only..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with SSE2,SSE3,SSSE3,SSE4_1 only..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=yes + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with SSE2,SSE3,SSSE3,SSE4_2 only..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=yes + export ax_cv_have_pclmuldq_ext=no + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + echo -n "Compiling with FULL SIMD support..." >> ${results} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=yes + export ax_cv_have_sse42_ext=yes + export ax_cv_have_pclmuldq_ext=yes + { ./configure && make clean && make && echo "SUCCESS" >> ${results}; } || { echo "FAIL" >> ${results}; ((++failed)); } + + return ${failed} +} + +# test that we can compile the source code with different +# SIMD options. We assume that we are running on processor +# full SIMD support +test_compile() { + case $host_cpu in + aarch64*|arm*) compile_arm ;; + i[[3456]]86*|x86_64*|amd64*) compile_intel ;; + esac +} + +# disable through build flags +runtime_arm_flags() { + failed=0 + + echo "====NO SIMD support..." >> ${1} + { ./configure --disable-neon --enable-debug-func && make clean && make; } || { echo "Compile FAILED" >> ${1}; return 1; } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====FULL SIMD support..." >> ${1} + { ./configure --enable-debug-func && make clean && make; } || { echo "Compile FAILED" >> ${1}; return 1; } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + return ${failed} +} + +# build once with FULL SIMD and disable at runtime through environment +runtime_arm_env() { + failed=0 + + { ./configure --enable-debug-func && make clean && make; } || { echo "Compile FAILED" >> ${1}; return 1; } + + echo "====NO SIMD support..." >> ${1} + export GF_COMPLETE_DISABLE_NEON=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====FULL SIMD support..." >> ${1} + unset GF_COMPLETE_DISABLE_NEON + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + return ${failed} +} + +runtime_intel_flags() { + failed=0 + + echo "====NO SIMD support..." >> ${1} + { ./configure --disable-sse --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2 support..." >> ${1} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=no + export ax_cv_have_ssse3_ext=no + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3 support..." >> ${1} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=no + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3 support..." >> ${1} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3,SSE4_1 support..." >> ${1} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=yes + export ax_cv_have_sse42_ext=no + export ax_cv_have_pclmuldq_ext=no + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3,SSE4_2 support..." >> ${1} + export ax_cv_have_sse_ext=no + export ax_cv_have_sse2_ext=yes + export ax_cv_have_sse3_ext=yes + export ax_cv_have_ssse3_ext=yes + export ax_cv_have_sse41_ext=no + export ax_cv_have_sse42_ext=yes + export ax_cv_have_pclmuldq_ext=no + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====FULL SIMD support..." >> ${1} + { ./configure --enable-debug-func && make clean && make; } || { echo "FAIL" >> ${1}; ((++failed)); } + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + return ${failed} +} + +runtime_intel_env() { + failed=0 + + # compile a build with full SIMD support + { ./configure --enable-debug-func && make clean && make; } || { echo "Compile FAILED" >> ${1}; return 1; } + + echo "====NO SIMD support..." >> ${1} + export GF_COMPLETE_DISABLE_SSE2=1 + export GF_COMPLETE_DISABLE_SSE3=1 + export GF_COMPLETE_DISABLE_SSSE3=1 + export GF_COMPLETE_DISABLE_SSE4=1 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2 support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + export GF_COMPLETE_DISABLE_SSE3=1 + export GF_COMPLETE_DISABLE_SSSE3=1 + export GF_COMPLETE_DISABLE_SSE4=1 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3 support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + unset GF_COMPLETE_DISABLE_SSE3 + export GF_COMPLETE_DISABLE_SSSE3=1 + export GF_COMPLETE_DISABLE_SSE4=1 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3 support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + unset GF_COMPLETE_DISABLE_SSE3 + unset GF_COMPLETE_DISABLE_SSSE3 + export GF_COMPLETE_DISABLE_SSE4=1 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3,SSE4_1 support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + unset GF_COMPLETE_DISABLE_SSE3 + unset GF_COMPLETE_DISABLE_SSSE3 + unset GF_COMPLETE_DISABLE_SSE4 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====SSE2,SSE3,SSSE3,SSE4_2 support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + unset GF_COMPLETE_DISABLE_SSE3 + unset GF_COMPLETE_DISABLE_SSSE3 + unset GF_COMPLETE_DISABLE_SSE4 + export GF_COMPLETE_DISABLE_SSE4_PCLMUL=1 + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + echo "====FULL SIMD support..." >> ${1} + unset GF_COMPLETE_DISABLE_SSE2 + unset GF_COMPLETE_DISABLE_SSE3 + unset GF_COMPLETE_DISABLE_SSSE3 + unset GF_COMPLETE_DISABLE_SSE4 + unset GF_COMPLETE_DISABLE_SSE4_PCLMUL + for i in 128 64 32 16 8 4; do + { ${script_dir}/gf_methods $i -ACD -X >> ${1}; } || { echo "gf_methods $i FAILED" >> ${1}; ((++failed)); } + done + + return ${failed} +} + +test_runtime() { + rm -f ${results}.left + rm -f ${results}.right + + case $host_cpu in + aarch64*|arm*) + runtime_arm_flags ${results}.left + runtime_arm_env ${results}.right + ;; + i[[3456]]86*|x86_64*|amd64*) + runtime_intel_flags ${results}.left + runtime_intel_env ${results}.right + ;; + esac + + echo "======LEFT======" > ${results} + cat ${results}.left >> ${results} + echo "======RIGHT======" >> ${results} + cat ${results}.right >> ${results} + echo "======RESULT======" >> ${results} + if diff "${results}.left" "${results}.right"; then + echo SUCCESS >> ${results} + return 0 + else + echo SUCCESS >> ${results} + return 1 + fi +} + +cd ${script_dir}/.. +rm -f ${results} + +test_$1 +exit $? diff --git a/src/erasure-code/jerasure/gf-complete/tools/test_simd_qemu.sh b/src/erasure-code/jerasure/gf-complete/tools/test_simd_qemu.sh new file mode 100755 index 00000000..5771874f --- /dev/null +++ b/src/erasure-code/jerasure/gf-complete/tools/test_simd_qemu.sh @@ -0,0 +1,258 @@ +#!/bin/bash -e + +# This script will use QEMU to test gf-complete especially SIMD support +# on different architectures and cpus. It will boot a qemu machine +# and run an Ubuntu cloud image. All testing will happen inside the +# QEMU machine. + +# The following packages are required: +# qemu-system-aarch64 +# qemu-system-arm +# qemu-system-x86_64 +# genisoimage + + +script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" +qemu_dir="${script_dir}/.qemu" +ssh_port=2222 +ssh_pubkey_file="${qemu_dir}/qemu.pub" +ssh_key_file="${qemu_dir}/qemu" + +mkdir -p "${qemu_dir}" + +cleanup() { + if [[ -n "$(jobs -p)" ]]; then + echo killing qemu processes "$(jobs -p)" + kill $(jobs -p) + fi +} + +trap cleanup EXIT + +start_qemu() { + arch=$1 + cpu=$2 + + image_version="xenial" + image_url_base="http://cloud-images.ubuntu.com/${image_version}/current" + + case $arch in + i[[3456]]86*|x86_64*|amd64*) + image_kernel="${image_version}-server-cloudimg-amd64-vmlinuz-generic" + image_initrd="${image_version}-server-cloudimg-amd64-initrd-generic" + image_disk="${image_version}-server-cloudimg-amd64-disk1.img" + ;; + aarch64*) + image_kernel="${image_version}-server-cloudimg-arm64-vmlinuz-generic" + image_initrd="${image_version}-server-cloudimg-arm64-initrd-generic" + image_disk="${image_version}-server-cloudimg-arm64-disk1.img" + ;; + arm*) + image_kernel="${image_version}-server-cloudimg-armhf-vmlinuz-lpae" + image_initrd="${image_version}-server-cloudimg-armhf-initrd-generic-lpae" + image_disk="${image_version}-server-cloudimg-armhf-disk1.img" + ;; + *) die "Unsupported arch" ;; + esac + + [[ -f ${qemu_dir}/${image_kernel} ]] || wget -O ${qemu_dir}/${image_kernel} ${image_url_base}/unpacked/${image_kernel} + [[ -f ${qemu_dir}/${image_initrd} ]] || wget -O ${qemu_dir}/${image_initrd} ${image_url_base}/unpacked/${image_initrd} + [[ -f ${qemu_dir}/${image_disk} ]] || wget -O ${qemu_dir}/${image_disk} ${image_url_base}/${image_disk} + + #create a delta disk to keep the original image clean + delta_disk="${qemu_dir}/disk.img" + rm -f ${delta_disk} + qemu-img create -q -f qcow2 -b "${qemu_dir}/${image_disk}" ${delta_disk} + + # generate an ssh keys + [[ -f ${ssh_pubkey_file} ]] || ssh-keygen -q -N "" -f ${ssh_key_file} + + # create a config disk to set the SSH keys + cat > "${qemu_dir}/meta-data" < "${qemu_dir}/user-data" <&2 + exit 1 +fi + +op=$1 +w=$2 + +shift ; shift + +method="$*" + +if [ $op != M -a $op != D -a $op != R -a $op != B ]; then + echo 'usage sh time_tool.sh M|D|R|B w method' >&2 + echo 'You have to specify a test: ' >&2 + echo ' M=Multiplication' >&2 + echo ' D=Division' >&2 + echo ' R=Regions' >&2 + echo ' B=Best-Region' >&2 + exit 1 +fi + +# First, use a 16K buffer to test the performance of single multiplies. + +fac=`echo $w | awk '{ n = $1; while (n != 0 && n%2==0) n /= 2; print n }'` +if [ $fac -eq 0 ]; then + echo 'usage sh time_tool.sh M|D|R|B w method' >&2 + echo 'Bad w' >&2 + exit 1 +fi + +bsize=16384 +bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'` + +if [ `./gf_time $w M -1 $bsize 1 $method 2>&1 | wc | awk '{ print $1 }'` -gt 2 ]; then + echo 'usage sh time_tool.sh w method' >&2 + echo "Bad method" + exit 1 +fi + +if [ $op = M -o $op = D ]; then + iter=1 + c1=`./gf_time $w $op -1 $bsize $iter $method` + t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'` + s=`echo $c1 | awk '{ print $8 }'` + bs=$s + + while [ $t -lt 1 ]; do + bs=$s + iter=`echo $iter | awk '{ print $1*2 }'` + c1=`./gf_time $w $op -1 $bsize $iter $method` + t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'` + s=`echo $c1 | awk '{ print $8 }'` + done + + echo $op $bs | awk '{ printf "%s speed (MB/s): %8.2lf W-Method: ", $1, $2 }' + echo $w $method + exit 0 +fi + +bsize=16384 +bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'` + +best=0 +while [ $bsize -le 4194304 ]; do + iter=1 + c1=`./gf_time $w G -1 $bsize $iter $method` + t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'` + s=`echo $c1 | awk '{ print $10 }'` + bs=$s + + while [ $t -lt 1 ]; do + bs=$s + iter=`echo $iter | awk '{ print $1*2 }'` + c1=`./gf_time $w G -1 $bsize $iter $method` + t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'` + s=`echo $c1 | awk '{ print $10 }'` + done + if [ $bsize -lt 1048576 ]; then + str=`echo $bsize | awk '{ printf "%3dK\n", $1/1024 }'` + else + str=`echo $bsize | awk '{ printf "%3dM\n", $1/1024/1024 }'` + fi + if [ $op = R ]; then + echo $str $bs | awk '{ printf "Region Buffer-Size: %4s (MB/s): %8.2lf W-Method: ", $1, $2 }' + echo $w $method + fi + best=`echo $best $bs | awk '{ print ($1 > $2) ? $1 : $2 }'` + bsize=`echo $bsize | awk '{ print $1 * 2 }'` +done +echo $best | awk '{ printf "Region Best (MB/s): %8.2lf W-Method: ", $1 }' +echo $w $method diff --git a/src/erasure-code/jerasure/jerasure/.gitignore b/src/erasure-code/jerasure/jerasure/.gitignore new file mode 100644 index 00000000..a356bf32 --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/.gitignore @@ -0,0 +1,26 @@ +/INSTALL +Makefile +Makefile.in +/aclocal.m4 +/autom4te.cache/ +/autoscan.log +/build-aux/ +/config.log +/config.status +/configure +/configure.scan +.deps/ +/include/config.h +/include/config.h.in +/include/stamp-h1 +.libs/ +/libtool +/m4/libtool.m4 +/m4/ltoptions.m4 +/m4/ltsugar.m4 +/m4/ltversion.m4 +/m4/lt~obsolete.m4 +*.l[ao] +*.[ao] +*~ +.dirstamp diff --git a/src/erasure-code/jerasure/jerasure/AUTHORS b/src/erasure-code/jerasure/jerasure/AUTHORS new file mode 100644 index 00000000..e69de29b diff --git a/src/erasure-code/jerasure/jerasure/COPYING b/src/erasure-code/jerasure/jerasure/COPYING new file mode 100644 index 00000000..20ffbd2d --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/COPYING @@ -0,0 +1,37 @@ + +Copyright (c) 2013, James S. Plank and Kevin Greenan +All rights reserved. + +Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure Coding Techniques + +Revision 2.0: Galois Field backend now links to GF-Complete + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + + - Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + + - Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in + the documentation and/or other materials provided with the + distribution. + + - Neither the name of the University of Tennessee nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY +WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. + diff --git a/src/erasure-code/jerasure/jerasure/ChangeLog b/src/erasure-code/jerasure/jerasure/ChangeLog new file mode 100644 index 00000000..e69de29b diff --git a/src/erasure-code/jerasure/jerasure/Examples/.gitignore b/src/erasure-code/jerasure/jerasure/Examples/.gitignore new file mode 100644 index 00000000..97bbded0 --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/Examples/.gitignore @@ -0,0 +1,8 @@ +/cauchy_[0-9][0-9] +/decoder +/encoder +/jerasure_[0-9][0-9] +/liberation_[0-9][0-9] +/reed_sol_[0-9][0-9] +/reed_sol_test_gf +/reed_sol_time_gf \ No newline at end of file diff --git a/src/erasure-code/jerasure/jerasure/Examples/Makefile.am b/src/erasure-code/jerasure/jerasure/Examples/Makefile.am new file mode 100644 index 00000000..75633c6e --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/Examples/Makefile.am @@ -0,0 +1,89 @@ +# Jerasure AM file + +INCLUDES=-I../ +AM_CFLAGS = -O3 $(SIMD_FLAGS) -fPIC $(INCLUDES) + +bin_PROGRAMS = jerasure_01 \ + jerasure_02 \ + jerasure_03 \ + jerasure_04 \ + jerasure_05 \ + jerasure_06 \ + jerasure_07 \ + jerasure_08 \ + reed_sol_01 \ + reed_sol_02 \ + reed_sol_03 \ + reed_sol_04 \ + reed_sol_test_gf \ + reed_sol_time_gf \ + cauchy_01 \ + cauchy_02 \ + cauchy_03 \ + cauchy_04 \ + liberation_01 \ + encoder \ + decoder + +jerasure_01_SOURCES = jerasure_01.c +jerasure_01_LDADD = ../src/libJerasure.la + +jerasure_02_SOURCES = jerasure_02.c +jerasure_02_LDADD = ../src/libJerasure.la + +jerasure_03_SOURCES = jerasure_03.c +jerasure_03_LDADD = ../src/libJerasure.la + +jerasure_04_SOURCES = jerasure_04.c +jerasure_04_LDADD = ../src/libJerasure.la + +jerasure_05_SOURCES = jerasure_05.c +jerasure_05_LDADD = ../src/libJerasure.la + +jerasure_06_SOURCES = jerasure_06.c +jerasure_06_LDADD = ../src/libJerasure.la + +jerasure_07_SOURCES = jerasure_07.c +jerasure_07_LDADD = ../src/libJerasure.la + +jerasure_08_SOURCES = jerasure_08.c +jerasure_08_LDADD = ../src/libJerasure.la + +reed_sol_01_SOURCES = reed_sol_01.c +reed_sol_01_LDADD = ../src/libJerasure.la + +reed_sol_02_SOURCES = reed_sol_02.c +reed_sol_02_LDADD = ../src/libJerasure.la + +reed_sol_03_SOURCES = reed_sol_03.c +reed_sol_03_LDADD = ../src/libJerasure.la + +reed_sol_04_SOURCES = reed_sol_04.c +reed_sol_04_LDADD = ../src/libJerasure.la + +reed_sol_test_gf_SOURCES = reed_sol_test_gf.c +reed_sol_test_gf_LDADD = ../src/libJerasure.la + +reed_sol_time_gf_SOURCES = reed_sol_time_gf.c +reed_sol_time_gf_LDADD = ../src/libJerasure.la + +cauchy_01_SOURCES = cauchy_01.c +cauchy_01_LDADD = ../src/libJerasure.la + +cauchy_02_SOURCES = cauchy_02.c +cauchy_02_LDADD = ../src/libJerasure.la + +cauchy_03_SOURCES = cauchy_03.c +cauchy_03_LDADD = ../src/libJerasure.la + +cauchy_04_SOURCES = cauchy_04.c +cauchy_04_LDADD = ../src/libJerasure.la + +liberation_01_SOURCES = liberation_01.c +liberation_01_LDADD = ../src/libJerasure.la + +encoder_SOURCES = encoder.c +encoder_LDADD = ../src/libJerasure.la + +decoder_SOURCES = decoder.c +decoder_LDADD = ../src/libJerasure.la diff --git a/src/erasure-code/jerasure/jerasure/Examples/Makefile.in b/src/erasure-code/jerasure/jerasure/Examples/Makefile.in new file mode 100644 index 00000000..db88309f --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/Examples/Makefile.in @@ -0,0 +1,688 @@ +# Makefile.in generated by automake 1.11.3 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software +# Foundation, Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +# Jerasure AM file + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +bin_PROGRAMS = jerasure_01$(EXEEXT) jerasure_02$(EXEEXT) \ + jerasure_03$(EXEEXT) jerasure_04$(EXEEXT) jerasure_05$(EXEEXT) \ + jerasure_06$(EXEEXT) jerasure_07$(EXEEXT) jerasure_08$(EXEEXT) \ + reed_sol_01$(EXEEXT) reed_sol_02$(EXEEXT) reed_sol_03$(EXEEXT) \ + reed_sol_04$(EXEEXT) reed_sol_test_gf$(EXEEXT) \ + reed_sol_time_gf$(EXEEXT) \ + cauchy_01$(EXEEXT) cauchy_02$(EXEEXT) cauchy_03$(EXEEXT) \ + cauchy_04$(EXEEXT) liberation_01$(EXEEXT) encoder$(EXEEXT) \ + decoder$(EXEEXT) +subdir = Examples +DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_compile_flag.m4 \ + $(top_srcdir)/m4/ax_ext.m4 \ + $(top_srcdir)/m4/ax_gcc_x86_avx_xgetbv.m4 \ + $(top_srcdir)/m4/ax_gcc_x86_cpuid.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \ + $(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 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+distclean-compile: + -rm -f *.tab.c + +.c.o: + $(COMPILE) -c $< + +.c.obj: + $(COMPILE) -c `$(CYGPATH_W) '$<'` + +.c.lo: + $(LTCOMPILE) -c -o $@ $< + +mostlyclean-libtool: + -rm -f *.lo + +clean-libtool: + -rm -rf .libs _libs + +ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES) + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + mkid -fID $$unique +tags: TAGS + +TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \ + $(TAGS_FILES) $(LISP) + set x; \ + here=`pwd`; \ + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + shift; \ + if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \ + test -n "$$unique" || unique=$$empty_fix; \ + if test $$# -gt 0; then \ + $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ + "$$@" $$unique; \ + else \ + $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ + $$unique; \ + fi; \ + fi +ctags: CTAGS +CTAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \ + $(TAGS_FILES) $(LISP) + list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ + unique=`for i in $$list; do \ + if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ + done | \ + $(AWK) '{ files[$$0] = 1; nonempty = 1; } \ + END { if (nonempty) { for (i in files) print i; }; }'`; \ + test -z "$(CTAGS_ARGS)$$unique" \ + || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \ + $$unique + +GTAGS: + here=`$(am__cd) $(top_builddir) && pwd` \ + && $(am__cd) $(top_srcdir) \ + && gtags -i $(GTAGS_ARGS) "$$here" + +distclean-tags: + -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags + +distdir: $(DISTFILES) + @srcdirstrip=`echo 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+ else \ + test -f "$(distdir)/$$file" \ + || cp -p $$d/$$file "$(distdir)/$$file" \ + || exit 1; \ + fi; \ + done +check-am: all-am +check: check-am +all-am: Makefile $(PROGRAMS) +installdirs: + for dir in "$(DESTDIR)$(bindir)"; do \ + test -z "$$dir" || $(MKDIR_P) "$$dir"; \ + done +install: install-am +install-exec: install-exec-am +install-data: install-data-am +uninstall: uninstall-am + +install-am: all-am + @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am + +installcheck: installcheck-am +install-strip: + if test -z '$(STRIP)'; then \ + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ + install; \ + else \ + $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ + install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \ + "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \ + fi +mostlyclean-generic: + +clean-generic: + +distclean-generic: + -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES) + -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES) + +maintainer-clean-generic: + @echo "This command is intended for maintainers to use" + @echo "it deletes files that may require special tools to rebuild." +clean: clean-am + +clean-am: clean-binPROGRAMS clean-generic clean-libtool mostlyclean-am + +distclean: distclean-am + -rm -f Makefile +distclean-am: clean-am distclean-compile distclean-generic \ + distclean-tags + +dvi: dvi-am + +dvi-am: + +html: html-am + +html-am: + +info: info-am + +info-am: + +install-data-am: + +install-dvi: install-dvi-am + +install-dvi-am: + +install-exec-am: install-binPROGRAMS + +install-html: install-html-am + +install-html-am: + +install-info: install-info-am + +install-info-am: + +install-man: + +install-pdf: install-pdf-am + +install-pdf-am: + +install-ps: install-ps-am + +install-ps-am: + +installcheck-am: + +maintainer-clean: maintainer-clean-am + -rm -f Makefile +maintainer-clean-am: distclean-am maintainer-clean-generic + +mostlyclean: mostlyclean-am + +mostlyclean-am: mostlyclean-compile mostlyclean-generic \ + mostlyclean-libtool + +pdf: pdf-am + +pdf-am: + +ps: ps-am + +ps-am: + +uninstall-am: uninstall-binPROGRAMS + +.MAKE: install-am install-strip + +.PHONY: CTAGS GTAGS all all-am check check-am clean clean-binPROGRAMS \ + clean-generic clean-libtool ctags distclean distclean-compile \ + distclean-generic distclean-libtool distclean-tags distdir dvi \ + dvi-am html html-am info info-am install install-am \ + install-binPROGRAMS install-data install-data-am install-dvi \ + install-dvi-am install-exec install-exec-am install-html \ + install-html-am install-info install-info-am install-man \ + install-pdf install-pdf-am install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-compile mostlyclean-generic mostlyclean-libtool \ + pdf pdf-am ps ps-am tags uninstall uninstall-am \ + uninstall-binPROGRAMS + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/erasure-code/jerasure/jerasure/Examples/cauchy_01.c b/src/erasure-code/jerasure/jerasure/Examples/cauchy_01.c new file mode 100644 index 00000000..870ea129 --- /dev/null +++ b/src/erasure-code/jerasure/jerasure/Examples/cauchy_01.c @@ -0,0 +1,110 @@ +/* * + * Copyright (c) 2014, James S. Plank and Kevin Greenan + * All rights reserved. + * + * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure + * Coding Techniques + * + * Revision 2.0: Galois Field backend now links to GF-Complete + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * - Neither the name of the University of Tennessee nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY + * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +/* Jerasure's authors: + + Revision 2.x - 2014: James S. Plank and Kevin M. Greenan + Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman. + Revision 1.0 - 2007: James S. Plank + */ + +#include +#include +#include +#include +#include "jerasure.h" +#include "reed_sol.h" + +#define talloc(type, num) (type *) malloc(sizeof(type)*(num)) + +usage(char *s) +{ + fprintf(stderr, "usage: cauchy_01 n w - Converts the value n to a bitmatrix using GF(2^w).\n"); + fprintf(stderr, " \n"); + fprintf(stderr, " It prints the bitmatrix, and reports on the numberof ones.\n"); + fprintf(stderr, " Use 0x to input n in hexadecimal.\n"); + fprintf(stderr, " W must be <= 32.\n"); + fprintf(stderr, " \n"); + fprintf(stderr, "This demonstrates: cauchy_n_ones()\n"); + fprintf(stderr, " jerasure_matrix_to_bitmatrix()\n"); + fprintf(stderr, " jerasure_print_bitmatrix()\n"); + if (s != NULL) fprintf(stderr, "\n%s\n", s); + exit(1); +} + +int main(int argc, char **argv) +{ + uint32_t n; + int i, no, w; + int *bitmatrix; + + if (argc != 3) usage(NULL); + if (sscanf(argv[1], "0x%x", &n) == 0) { + if (sscanf(argv[1], "%d", &n) == 0) usage("Bad n"); + } + if (sscanf(argv[2], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w"); + if (w == 31) { + if (n & 0x80000000L) usage("Bad n/w combination (n not between 0 and 2^w-1)\n"); + } else if (w < 31) { + if (n >= (1 << w)) usage("Bad n/w combination (n not between 0 and 2^w-1)\n"); + } + + bitmatrix = jerasure_matrix_to_bitmatrix(1, 1, w, &n); + printf("cauchy_01 %u %d\n", w, n); + printf("

    cauchy_01 %u %d

    \n", w, n); + printf("
    \n");
+  if (w == 32) {
+    printf("Converted the value 0x%x to the following bitmatrix:\n\n", n);
+  } else {
+    printf("Converted the value %d (0x%x) to the following bitmatrix:\n\n", n, n);
+  }
+  jerasure_print_bitmatrix(bitmatrix, w, w, w);
+  printf("\n");
+
+  no = 0;
+  for (i = 0; i < w*w; i++) no += bitmatrix[i];
+  if (no != cauchy_n_ones(n, w)) { 
+    fprintf(stderr, "Jerasure error: # ones in the bitmatrix (%d) doesn't match cauchy_n_ones() (%d).\n",
+       no, cauchy_n_ones(n, w));
+    exit(1);
+  }
+
+  printf("# Ones: %d\n", cauchy_n_ones(n, w));
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/cauchy_02.c b/src/erasure-code/jerasure/jerasure/Examples/cauchy_02.c
new file mode 100644
index 00000000..d5d37ee7
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/cauchy_02.c
@@ -0,0 +1,270 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+ 
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "cauchy.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: cauchy_02 k m w seed - CRS coding example using Bloemer's original matrix.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "k+m must be <= 2^w\n");
+  fprintf(stderr, "This sets up a generator matrix (G^T) in GF(2^w) whose last m rows are\n");
+  fprintf(stderr, "created from a Cauchy matrix, using the original definition from [Bloemer95].\n");
+  fprintf(stderr, "It converts this matrix to a bitmatrix, and then it encodes w packets from\n");
+  fprintf(stderr, "each of k disks (simulated) onto w packets on each of m disks.  Packets are \n");
+  fprintf(stderr, "simply longs.  Then, it deletes m random disks, and decodes.  \n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "The encoding and decoding are done twice, first, with jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "and jerasure_bitmatrix_decode(), and second using 'smart' scheduling with\n");
+  fprintf(stderr, "jerasure_schedule_encode() and jerasure_schedule_decode_lazy().\n");
+
+  fprintf(stderr, "\n");
+  fprintf(stderr, "This demonstrates: cauchy_original_coding_matrix()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_decode()\n");
+  fprintf(stderr, "                   cauchy_n_ones()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_lazy()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+  
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  int k, w, i, j, m;
+  int *matrix, *bitmatrix, **schedule;
+  char **data, **coding, **ptrs, **dcopy, **ccopy;
+  int no;
+  int *erasures, *erased;
+  double mstats[3], sstats[3];
+  uint32_t seed;
+  
+  if (argc != 5) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+
+  matrix = cauchy_original_coding_matrix(k, m, w);
+  if (matrix == NULL) {
+    usage("couldn't make coding matrix");
+  }
+
+  /* Print out header information to the output file. */
+  printf("\n");
+  printf("Jerasure Example Output: cauchy_02 %d %d %d %d\n", k, m, w, seed);
+  printf("
    Jerasure Example Output: cauchy_02 %d %d %d %d
    \n", k, m, w, seed);
+
+  printf("
    \n");
+  printf("Parameters:\n");
+  printf("
    •  Number of data disks (k): %d\n", k);
+  printf("
    •  Number of coding disks (m): %d\n", m);
+  printf("
    •  Word size of the Galois Field: (w): %d\n", w);
+  printf("
    •  Seed for the random number generator: %d\n", seed);
+  printf("
    •  Number of bytes stored per disk: %ld\n", sizeof(long)*w);
+  printf("
    •  Number of packets stored per disk: %d\n", w);
+  printf("
    •  Number of bytes per packet: %ld\n", sizeof(long));
+  printf("
    \n");
+
+  /* Print out the matrix and the bitmatrix */
+  printf("
    \n");
+  printf("Here is the matrix, which was created with cauchy_original_coding_matrix().\n");
+  printf("This is not the best matrix to use, but we include it to show an example\n");
+  printf("of cauchy_original_coding_matrix().  For the best matrix and encoding/decoding\n");
+  printf("methodology, see cauchy_04.
    \n");
+
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("
    \n");
+
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  no = 0;
+  for (i = 0; i < k*m; i++) {
+    no += cauchy_n_ones(matrix[i], w);
+  }
+
+  printf("The bitmatrix, which has %d one%s:
    \n", no, (no == 1) ? "" : "s");
+  jerasure_print_bitmatrix(bitmatrix, m*w, k*w, w);
+  printf("
    \n");
+  printf("
    \n");
+  MOA_Seed(seed);
+
+  data = talloc(char *, k);
+  dcopy = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    dcopy[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+    memcpy(dcopy[i], data[i], sizeof(long)*w);
+  }
+
+  printf("Here are the packets on the data disks:
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+
+  coding = talloc(char *, m);
+  ccopy = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+    ccopy[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_bitmatrix_encode(k, m, w, bitmatrix, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+  jerasure_schedule_encode(k, m, w, schedule, data, ccopy, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(sstats);
+
+  printf("
    Encoding with jerasure_bitmatrix_encode() - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+  printf("Encoding with jerasure_schedule_encode() - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < m; i++) {
+    if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+      printf("Problem: the two encodings don't match on disk C%x\n", i);
+      exit(0);
+    }
+  }
+
+  printf("Here are the packets on the coding disks.
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(31, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+  printf("Erasures on the following devices:");
+  for (i = 0; erasures[i] != -1; i++) {
+    printf(" %c%x", ((erasures[i] < k) ? 'D' : 'C'), (erasures[i] < k ? erasures[i] : erasures[i]-k));
+  }
+  printf("
    \nHere is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_bitmatrix_decode(k, m, w, bitmatrix, 0, erasures, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  printf("
    Decoded with jerasure_bitmatrix_decode - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  for (i = 0; erasures[i] != -1; i++) {
+    bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+  }
+
+  jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, w*sizeof(long), sizeof(long), 1);
+  jerasure_get_stats(sstats);
+
+  printf("jerasure_schedule_decode_lazy - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  printf("Here is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/cauchy_03.c b/src/erasure-code/jerasure/jerasure/Examples/cauchy_03.c
new file mode 100644
index 00000000..b391da51
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/cauchy_03.c
@@ -0,0 +1,288 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+ 
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "cauchy.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: cauchy_03 k m w seed - CRS coding example improving the matrix.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "k+m must be <= 2^w\n");
+  fprintf(stderr, "This sets up a generator matrix (G^T) in GF(2^w) whose last m rows are\n");
+  fprintf(stderr, "created from a Cauchy matrix, using the original definition from [Bloemer95].\n");
+  fprintf(stderr, "This is done with cauchy_xy_coding_matrix().\n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "It then it improves the matrix, which yields a different bitmatrix that is\n");
+  fprintf(stderr, "MDS like the original bitmatrix, but it will yield a bitmatrix with fewer ones.\n");
+  fprintf(stderr, "Then, it encodes w packets from each of k disks (simulated) onto w packets on\n");
+  fprintf(stderr, "on each of m disks.  Packets are longs.  Then, it deletes m random disks, and decodes.\n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "The encoding and decoding are done twice, first, with jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "and jerasure_bitmatrix_decode(), and second using 'smart' scheduling with\n");
+  fprintf(stderr, "jerasure_schedule_encode() and jerasure_schedule_decode_lazy().\n");
+
+  fprintf(stderr, "\n");
+  fprintf(stderr, "This demonstrates: cauchy_xy_coding_matrix()\n");
+  fprintf(stderr, "                   cauchy_improve_coding_matrix()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_decode()\n");
+  fprintf(stderr, "                   cauchy_n_ones()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_lazy()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+  
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  int k, w, i, j, m;
+  int *matrix, *bitmatrix, **schedule;
+  char **data, **coding, **ptrs, **dcopy, **ccopy;
+  int no;
+  int *erasures, *erased;
+  double mstats[3], sstats[3];
+  uint32_t seed;
+  int *X, *Y;
+  
+  if (argc != 5) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+
+  X = talloc(int, m);
+  Y = talloc(int, k);
+  for (i = 0; i < m; i++) X[i] = i;
+  for (i = 0; i < k; i++) Y[i] = m+i;
+
+  matrix = cauchy_xy_coding_matrix(k, m, w, X, Y);
+  if (matrix == NULL) {
+    usage("couldn't make coding matrix");
+  }
+
+  /* Print out header information to the output file. */
+  printf("\n");
+  printf("Jerasure Example Output: cauchy_03 %d %d %d %d\n", k, m, w, seed);
+  printf("
    Jerasure Example Output: cauchy_03 %d %d %d %d
    \n", k, m, w, seed);
+
+  printf("
    \n");
+  printf("Parameters:\n");
+  printf("
    •  Number of data disks (k): %d\n", k);
+  printf("
    •  Number of coding disks (m): %d\n", m);
+  printf("
    •  Word size of the Galois Field: (w): %d\n", w);
+  printf("
    •  Seed for the random number generator: %d\n", seed);
+  printf("
    •  Number of bytes stored per disk: %ld\n", sizeof(long)*w);
+  printf("
    •  Number of packets stored per disk: %d\n", w);
+  printf("
    •  Number of bytes per packet: %ld\n", sizeof(long));
+  printf("
    \n");
+
+  /* Print out the matrix and the bitmatrix */
+  printf("
    \n");
+  printf("Here is the matrix, which was created with cauchy_xy_coding_matrix().\n");
+
+  printf("
    \n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("
    \n");
+
+  cauchy_improve_coding_matrix(k, m, w, matrix);
+
+  printf("
    \n");
+  printf("Here is the matrix improved with cauchy_improve_coding_matrix().\n");
+
+  printf("
    \n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("
    \n");
+
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  no = 0;
+  for (i = 0; i < k*m; i++) {
+    no += cauchy_n_ones(matrix[i], w);
+  }
+
+  printf("The bitmatrix, which has %d one%s:
    \n", no, (no == 1) ? "" : "s");
+  jerasure_print_bitmatrix(bitmatrix, m*w, k*w, w);
+  printf("
    \n");
+  printf("
    \n");
+
+  MOA_Seed(seed);
+
+  data = talloc(char *, k);
+  dcopy = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    dcopy[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+    memcpy(dcopy[i], data[i], sizeof(long)*w);
+  }
+
+  printf("Here are the packets on the data disks:
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+
+  coding = talloc(char *, m);
+  ccopy = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+    ccopy[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_bitmatrix_encode(k, m, w, bitmatrix, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+  jerasure_schedule_encode(k, m, w, schedule, data, ccopy, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(sstats);
+
+  printf("
    Encoding with jerasure_bitmatrix_encode() - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+  printf("Encoding with jerasure_schedule_encode() - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < m; i++) {
+    if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+      printf("Problem: the two encodings don't match on disk C%x\n", i);
+      exit(0);
+    }
+  }
+
+  printf("Here are the packets on the coding disks.
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(31, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+  printf("Erasures on the following devices:");
+  for (i = 0; erasures[i] != -1; i++) {
+    printf(" %c%x", ((erasures[i] < k) ? 'D' : 'C'), (erasures[i] < k ? erasures[i] : erasures[i]-k));
+  }
+  printf("
    \nHere is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_bitmatrix_decode(k, m, w, bitmatrix, 0, erasures, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  printf("
    Decoded with jerasure_bitmatrix_decode - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  for (i = 0; erasures[i] != -1; i++) {
+    bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+  }
+
+  jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, w*sizeof(long), sizeof(long), 1);
+  jerasure_get_stats(sstats);
+
+  printf("jerasure_schedule_decode_lazy - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  printf("Here is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/cauchy_04.c b/src/erasure-code/jerasure/jerasure/Examples/cauchy_04.c
new file mode 100644
index 00000000..6525de36
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/cauchy_04.c
@@ -0,0 +1,270 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+ 
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "cauchy.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: cauchy_04 k m w seed - CRS coding example improving the matrix.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "k+m must be <= 2^w\n");
+  fprintf(stderr, "This sets up a generator matrix (G^T) in GF(2^w) whose last m rows are\n");
+  fprintf(stderr, "a 'good' matrix, created with cauchy_good_general_coding_matrix().\n");
+  fprintf(stderr, "It converts this matrix to a bitmatrix.\n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "Then, it encodes w packets from each of k disks (simulated) onto w packets on\n");
+  fprintf(stderr, "on each of m disks.  Packets are longs.  Then, it deletes m random disks, and decodes.\n");
+  fprintf(stderr, "\n");
+  fprintf(stderr, "The encoding and decoding are done twice, first, with jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "and jerasure_bitmatrix_decode(), and second using 'smart' scheduling with\n");
+  fprintf(stderr, "jerasure_schedule_encode() and jerasure_schedule_decode_lazy().\n");
+
+  fprintf(stderr, "\n");
+  fprintf(stderr, "This demonstrates: cauchy_good_general_coding_matrix()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_decode()\n");
+  fprintf(stderr, "                   cauchy_n_ones()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_lazy()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+  
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  int k, w, i, j, m;
+  int *matrix, *bitmatrix, **schedule;
+  char **data, **coding, **ptrs, **dcopy, **ccopy;
+  int no;
+  int *erasures, *erased;
+  double mstats[3], sstats[3];
+  uint32_t seed;
+  
+  if (argc != 5) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+
+  matrix = cauchy_good_general_coding_matrix(k, m, w);
+  if (matrix == NULL) {
+    usage("couldn't make coding matrix");
+  }
+
+  /* Print out header information to the output file. */
+  printf("\n");
+  printf("Jerasure Example Output: cauchy_04 %d %d %d %d\n", k, m, w, seed);
+  printf("
    Jerasure Example Output: cauchy_04 %d %d %d %d
    \n", k, m, w, seed);
+
+  printf("
    \n");
+  printf("Parameters:\n");
+  printf("
    •  Number of data disks (k): %d\n", k);
+  printf("
    •  Number of coding disks (m): %d\n", m);
+  printf("
    •  Word size of the Galois Field: (w): %d\n", w);
+  printf("
    •  Seed for the random number generator: %d\n", seed);
+  printf("
    •  Number of bytes stored per disk: %ld\n", sizeof(long)*w);
+  printf("
    •  Number of packets stored per disk: %d\n", w);
+  printf("
    •  Number of bytes per packet: %ld\n", sizeof(long));
+  printf("
    \n");
+
+  /* Print out the matrix and the bitmatrix */
+  printf("
    \n");
+  printf("Here is the matrix, which was created with cauchy_good_general_coding_matrix().\n");
+
+  printf("
    \n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("
    \n");
+
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  no = 0;
+  for (i = 0; i < k*m; i++) {
+    no += cauchy_n_ones(matrix[i], w);
+  }
+
+  printf("The bitmatrix, which has %d one%s:
    \n", no, (no == 1) ? "" : "s");
+  jerasure_print_bitmatrix(bitmatrix, m*w, k*w, w);
+  printf("
    \n");
+  printf("
    \n");
+
+  MOA_Seed(seed);
+
+  data = talloc(char *, k);
+  dcopy = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    dcopy[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+    memcpy(dcopy[i], data[i], sizeof(long)*w);
+  }
+
+  printf("Here are the packets on the data disks:
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+
+  coding = talloc(char *, m);
+  ccopy = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+    ccopy[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_bitmatrix_encode(k, m, w, bitmatrix, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+  jerasure_schedule_encode(k, m, w, schedule, data, ccopy, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(sstats);
+
+  printf("
    Encoding with jerasure_bitmatrix_encode() - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+  printf("Encoding with jerasure_schedule_encode() - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < m; i++) {
+    if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+      printf("Problem: the two encodings don't match on disk C%x\n", i);
+      exit(0);
+    }
+  }
+
+  printf("Here are the packets on the coding disks.
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(31, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+  printf("Erasures on the following devices:");
+  for (i = 0; erasures[i] != -1; i++) {
+    printf(" %c%x", ((erasures[i] < k) ? 'D' : 'C'), (erasures[i] < k ? erasures[i] : erasures[i]-k));
+  }
+  printf("
    \nHere is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_bitmatrix_decode(k, m, w, bitmatrix, 0, erasures, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(mstats);
+
+  printf("
    Decoded with jerasure_bitmatrix_decode - Bytes XOR'd: %.0lf.
    \n", mstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  for (i = 0; erasures[i] != -1; i++) {
+    bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+  }
+
+  jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, w*sizeof(long), sizeof(long), 1);
+  jerasure_get_stats(sstats);
+
+  printf("jerasure_schedule_decode_lazy - Bytes XOR'd: %.0lf.
    \n", sstats[0]);
+
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)*w) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  printf("Here is the state of the system:\n
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/decoder.c b/src/erasure-code/jerasure/jerasure/Examples/decoder.c
new file mode 100644
index 00000000..b01e538b
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/decoder.c
@@ -0,0 +1,410 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+/* 
+This program takes as input an inputfile, k, m, a coding
+technique, w, and packetsize.  It is the companion program
+of encoder.c, which creates k+m files.  This program assumes 
+that up to m erasures have occurred in the k+m files.  It
+reads in the k+m files or marks the file as erased. It then
+recreates the original file and creates a new file with the
+suffix "decoded" with the decoded contents of the file.
+
+This program does not error check command line arguments because 
+it is assumed that encoder.c has been called previously with the
+same arguments, and encoder.c does error check.
+*/
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+#include "galois.h"
+#include "cauchy.h"
+#include "liberation.h"
+
+#define N 10
+
+enum Coding_Technique {Reed_Sol_Van, Reed_Sol_R6_Op, Cauchy_Orig, Cauchy_Good, Liberation, Blaum_Roth, Liber8tion, RDP, EVENODD, No_Coding};
+
+char *Methods[N] = {"reed_sol_van", "reed_sol_r6_op", "cauchy_orig", "cauchy_good", "liberation", "blaum_roth", "liber8tion", "rdp", "evenodd", "no_coding"};
+
+/* Global variables for signal handler */
+enum Coding_Technique method;
+int readins, n;
+
+/* Function prototype */
+void ctrl_bs_handler(int dummy);
+
+int main (int argc, char **argv) {
+	FILE *fp;				// File pointer
+
+	/* Jerasure arguments */
+	char **data;
+	char **coding;
+	int *erasures;
+	int *erased;
+	int *matrix;
+	int *bitmatrix;
+	
+	/* Parameters */
+	int k, m, w, packetsize, buffersize;
+	int tech;
+	char *c_tech;
+	
+	int i, j;				// loop control variable, s
+	int blocksize;			// size of individual files
+	int origsize;			// size of file before padding
+	int total;				// used to write data, not padding to file
+	struct stat status;		// used to find size of individual files
+	int numerased;			// number of erased files
+        int dummy;
+		
+	/* Used to recreate file names */
+	char *temp;
+	char *cs1, *cs2, *extension;
+	char *fname;
+	int md;
+	char *curdir;
+
+	/* Used to time decoding */
+	struct timeval t1, t2, t3, t4;
+	struct timezone tz;
+	double tsec;
+	double totalsec;
+
+	
+	signal(SIGQUIT, ctrl_bs_handler);
+
+	matrix = NULL;
+	bitmatrix = NULL;
+	totalsec = 0.0;
+	
+	/* Start timing */
+	gettimeofday(&t1, &tz);
+
+	/* Error checking parameters */
+	if (argc != 2) {
+		fprintf(stderr, "usage: inputfile\n");
+		exit(0);
+	}
+	curdir = (char *)malloc(sizeof(char)*100);
+	getcwd(curdir, 100);
+	
+	/* Begin recreation of file names */
+	cs1 = (char*)malloc(sizeof(char)*strlen(argv[1]));
+	cs2 = strrchr(argv[1], '/');
+	if (cs2 != NULL) {
+		cs2++;
+		strcpy(cs1, cs2);
+	}
+	else {
+		strcpy(cs1, argv[1]);
+	}
+	cs2 = strchr(cs1, '.');
+	if (cs2 != NULL) {
+                extension = strdup(cs2);
+		*cs2 = '\0';
+	} else {
+           extension = strdup("");
+        }	
+	fname = (char *)malloc(sizeof(char*)*(100+strlen(argv[1])+20));
+
+	/* Read in parameters from metadata file */
+	sprintf(fname, "%s/Coding/%s_meta.txt", curdir, cs1);
+
+	fp = fopen(fname, "rb");
+        if (fp == NULL) {
+          fprintf(stderr, "Error: no metadata file %s\n", fname);
+          exit(1);
+        }
+	temp = (char *)malloc(sizeof(char)*(strlen(argv[1])+20));
+	if (fscanf(fp, "%s", temp) != 1) {
+		fprintf(stderr, "Metadata file - bad format\n");
+		exit(0);
+	}
+	
+	if (fscanf(fp, "%d", &origsize) != 1) {
+		fprintf(stderr, "Original size is not valid\n");
+		exit(0);
+	}
+	if (fscanf(fp, "%d %d %d %d %d", &k, &m, &w, &packetsize, &buffersize) != 5) {
+		fprintf(stderr, "Parameters are not correct\n");
+		exit(0);
+	}
+	c_tech = (char *)malloc(sizeof(char)*(strlen(argv[1])+20));
+	if (fscanf(fp, "%s", c_tech) != 1) {
+		fprintf(stderr, "Metadata file - bad format\n");
+		exit(0);
+	}
+	if (fscanf(fp, "%d", &tech) != 1) {
+		fprintf(stderr, "Metadata file - bad format\n");
+		exit(0);
+	}
+	method = tech;
+	if (fscanf(fp, "%d", &readins) != 1) {
+		fprintf(stderr, "Metadata file - bad format\n");
+		exit(0);
+	}
+	fclose(fp);	
+
+	/* Allocate memory */
+	erased = (int *)malloc(sizeof(int)*(k+m));
+	for (i = 0; i < k+m; i++)
+		erased[i] = 0;
+	erasures = (int *)malloc(sizeof(int)*(k+m));
+
+	data = (char **)malloc(sizeof(char *)*k);
+	coding = (char **)malloc(sizeof(char *)*m);
+	if (buffersize != origsize) {
+		for (i = 0; i < k; i++) {
+			data[i] = (char *)malloc(sizeof(char)*(buffersize/k));
+		}
+		for (i = 0; i < m; i++) {
+			coding[i] = (char *)malloc(sizeof(char)*(buffersize/k));
+		}
+		blocksize = buffersize/k;
+	}
+
+	sprintf(temp, "%d", k);
+	md = strlen(temp);
+	gettimeofday(&t3, &tz);
+
+	/* Create coding matrix or bitmatrix */
+	switch(tech) {
+		case No_Coding:
+			break;
+		case Reed_Sol_Van:
+			matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+			break;
+		case Reed_Sol_R6_Op:
+			matrix = reed_sol_r6_coding_matrix(k, w);
+			break;
+		case Cauchy_Orig:
+			matrix = cauchy_original_coding_matrix(k, m, w);
+			bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+			break;
+		case Cauchy_Good:
+			matrix = cauchy_good_general_coding_matrix(k, m, w);
+			bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+			break;
+		case Liberation:
+			bitmatrix = liberation_coding_bitmatrix(k, w);
+			break;
+		case Blaum_Roth:
+			bitmatrix = blaum_roth_coding_bitmatrix(k, w);
+			break;
+		case Liber8tion:
+			bitmatrix = liber8tion_coding_bitmatrix(k);
+	}
+	gettimeofday(&t4, &tz);
+	tsec = 0.0;
+	tsec += t4.tv_usec;
+	tsec -= t3.tv_usec;
+	tsec /= 1000000.0;
+	tsec += t4.tv_sec;
+	tsec -= t3.tv_sec;
+	totalsec += tsec;
+	
+	/* Begin decoding process */
+	total = 0;
+	n = 1;	
+	while (n <= readins) {
+		numerased = 0;
+		/* Open files, check for erasures, read in data/coding */	
+		for (i = 1; i <= k; i++) {
+			sprintf(fname, "%s/Coding/%s_k%0*d%s", curdir, cs1, md, i, extension);
+			fp = fopen(fname, "rb");
+			if (fp == NULL) {
+				erased[i-1] = 1;
+				erasures[numerased] = i-1;
+				numerased++;
+				//printf("%s failed\n", fname);
+			}
+			else {
+				if (buffersize == origsize) {
+					stat(fname, &status);
+					blocksize = status.st_size;
+					data[i-1] = (char *)malloc(sizeof(char)*blocksize);
+					dummy = fread(data[i-1], sizeof(char), blocksize, fp);
+				}
+				else {
+					fseek(fp, blocksize*(n-1), SEEK_SET); 
+					dummy = fread(data[i-1], sizeof(char), buffersize/k, fp);
+				}
+				fclose(fp);
+			}
+		}
+		for (i = 1; i <= m; i++) {
+			sprintf(fname, "%s/Coding/%s_m%0*d%s", curdir, cs1, md, i, extension);
+				fp = fopen(fname, "rb");
+			if (fp == NULL) {
+				erased[k+(i-1)] = 1;
+				erasures[numerased] = k+i-1;
+				numerased++;
+				//printf("%s failed\n", fname);
+			}
+			else {
+				if (buffersize == origsize) {
+					stat(fname, &status);
+					blocksize = status.st_size;
+					coding[i-1] = (char *)malloc(sizeof(char)*blocksize);
+					dummy = fread(coding[i-1], sizeof(char), blocksize, fp);
+				}
+				else {
+					fseek(fp, blocksize*(n-1), SEEK_SET);
+					dummy = fread(coding[i-1], sizeof(char), blocksize, fp);
+				}	
+				fclose(fp);
+			}
+		}
+		/* Finish allocating data/coding if needed */
+		if (n == 1) {
+			for (i = 0; i < numerased; i++) {
+				if (erasures[i] < k) {
+					data[erasures[i]] = (char *)malloc(sizeof(char)*blocksize);
+				}
+				else {
+					coding[erasures[i]-k] = (char *)malloc(sizeof(char)*blocksize);
+				}
+			}
+		}
+		
+		erasures[numerased] = -1;
+		gettimeofday(&t3, &tz);
+	
+		/* Choose proper decoding method */
+		if (tech == Reed_Sol_Van || tech == Reed_Sol_R6_Op) {
+			i = jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, blocksize);
+		}
+		else if (tech == Cauchy_Orig || tech == Cauchy_Good || tech == Liberation || tech == Blaum_Roth || tech == Liber8tion) {
+			i = jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, blocksize, packetsize, 1);
+		}
+		else {
+			fprintf(stderr, "Not a valid coding technique.\n");
+			exit(0);
+		}
+		gettimeofday(&t4, &tz);
+	
+		/* Exit if decoding was unsuccessful */
+		if (i == -1) {
+			fprintf(stderr, "Unsuccessful!\n");
+			exit(0);
+		}
+	
+		/* Create decoded file */
+		sprintf(fname, "%s/Coding/%s_decoded%s", curdir, cs1, extension);
+		if (n == 1) {
+			fp = fopen(fname, "wb");
+		}
+		else {
+			fp = fopen(fname, "ab");
+		}
+		for (i = 0; i < k; i++) {
+			if (total+blocksize <= origsize) {
+				fwrite(data[i], sizeof(char), blocksize, fp);
+				total+= blocksize;
+			}
+			else {
+				for (j = 0; j < blocksize; j++) {
+					if (total < origsize) {
+						fprintf(fp, "%c", data[i][j]);
+						total++;
+					}
+					else {
+						break;
+					}
+					
+				}
+			}
+		}
+		n++;
+		fclose(fp);
+		tsec = 0.0;
+		tsec += t4.tv_usec;
+		tsec -= t3.tv_usec;
+		tsec /= 1000000.0;
+		tsec += t4.tv_sec;
+		tsec -= t3.tv_sec;
+		totalsec += tsec;
+	}
+	
+	/* Free allocated memory */
+	free(cs1);
+	free(extension);
+	free(fname);
+	free(data);
+	free(coding);
+	free(erasures);
+	free(erased);
+	
+	/* Stop timing and print time */
+	gettimeofday(&t2, &tz);
+	tsec = 0;
+	tsec += t2.tv_usec;
+	tsec -= t1.tv_usec;
+	tsec /= 1000000.0;
+	tsec += t2.tv_sec;
+	tsec -= t1.tv_sec;
+	printf("Decoding (MB/sec): %0.10f\n", (((double) origsize)/1024.0/1024.0)/totalsec);
+	printf("De_Total (MB/sec): %0.10f\n\n", (((double) origsize)/1024.0/1024.0)/tsec);
+}	
+
+void ctrl_bs_handler(int dummy) {
+	time_t mytime;
+	mytime = time(0);
+	fprintf(stderr, "\n%s\n", ctime(&mytime));
+	fprintf(stderr, "You just typed ctrl-\\ in decoder.c\n");
+	fprintf(stderr, "Total number of read ins = %d\n", readins);
+	fprintf(stderr, "Current read in: %d\n", n);
+	fprintf(stderr, "Method: %s\n\n", Methods[method]);
+	signal(SIGQUIT, ctrl_bs_handler);
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/encoder.c b/src/erasure-code/jerasure/jerasure/Examples/encoder.c
new file mode 100644
index 00000000..6e01acfb
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/encoder.c
@@ -0,0 +1,635 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+/* 
+
+This program takes as input an inputfile, k, m, a coding 
+technique, w, and packetsize.  It creates k+m files from 
+the original file so that k of these files are parts of 
+the original file and m of the files are encoded based on 
+the given coding technique. The format of the created files 
+is the file name with "_k#" or "_m#" and then the extension.  
+(For example, inputfile test.txt would yield file "test_k1.txt".)
+*/
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+#include "cauchy.h"
+#include "liberation.h"
+
+#define N 10
+
+enum Coding_Technique {Reed_Sol_Van, Reed_Sol_R6_Op, Cauchy_Orig, Cauchy_Good, Liberation, Blaum_Roth, Liber8tion, RDP, EVENODD, No_Coding};
+
+char *Methods[N] = {"reed_sol_van", "reed_sol_r6_op", "cauchy_orig", "cauchy_good", "liberation", "blaum_roth", "liber8tion", "no_coding"};
+
+/* Global variables for signal handler */
+int readins, n;
+enum Coding_Technique method;
+
+/* Function prototypes */
+int is_prime(int w);
+void ctrl_bs_handler(int dummy);
+
+int jfread(void *ptr, int size, int nmembers, FILE *stream)
+{
+  int nd;
+  int *li, i;
+  if (stream != NULL) return fread(ptr, size, nmembers, stream);
+
+  MOA_Fill_Random_Region(ptr, size);
+  return size;
+}
+
+
+int main (int argc, char **argv) {
+	FILE *fp, *fp2;				// file pointers
+	char *memblock;				// reading in file
+	char *block;				// padding file
+	int size, newsize;			// size of file and temp size 
+	struct stat status;			// finding file size
+
+	
+	enum Coding_Technique tech;		// coding technique (parameter)
+	int k, m, w, packetsize;		// parameters
+	int buffersize;					// paramter
+	int i, j;						// loop control variables
+	int blocksize;					// size of k+m files
+	int total;
+	int extra;
+	
+	/* Jerasure Arguments */
+	char **data;				
+	char **coding;
+	int *matrix;
+	int *bitmatrix;
+	int **schedule;
+	int *erasure;
+	int *erased;
+	
+	/* Creation of file name variables */
+	char temp[5];
+	char *s1, *s2, *extension;
+	char *fname;
+	int md;
+	char *curdir;
+	
+	/* Timing variables */
+	struct timeval t1, t2, t3, t4;
+	struct timezone tz;
+	double tsec;
+	double totalsec;
+	struct timeval start, stop;
+
+	/* Find buffersize */
+	int up, down;
+
+
+	signal(SIGQUIT, ctrl_bs_handler);
+
+	/* Start timing */
+	gettimeofday(&t1, &tz);
+	totalsec = 0.0;
+	matrix = NULL;
+	bitmatrix = NULL;
+	schedule = NULL;
+	
+	/* Error check Arguments*/
+	if (argc != 8) {
+		fprintf(stderr,  "usage: inputfile k m coding_technique w packetsize buffersize\n");
+		fprintf(stderr,  "\nChoose one of the following coding techniques: \nreed_sol_van, \nreed_sol_r6_op, \ncauchy_orig, \ncauchy_good, \nliberation, \nblaum_roth, \nliber8tion");
+		fprintf(stderr,  "\n\nPacketsize is ignored for the reed_sol's");
+		fprintf(stderr,  "\nBuffersize of 0 means the buffersize is chosen automatically.\n");
+		fprintf(stderr,  "\nIf you just want to test speed, use an inputfile of \"-number\" where number is the size of the fake file you want to test.\n\n");
+		exit(0);
+	}
+	/* Conversion of parameters and error checking */	
+	if (sscanf(argv[2], "%d", &k) == 0 || k <= 0) {
+		fprintf(stderr,  "Invalid value for k\n");
+		exit(0);
+	}
+	if (sscanf(argv[3], "%d", &m) == 0 || m < 0) {
+		fprintf(stderr,  "Invalid value for m\n");
+		exit(0);
+	}
+	if (sscanf(argv[5],"%d", &w) == 0 || w <= 0) {
+		fprintf(stderr,  "Invalid value for w.\n");
+		exit(0);
+	}
+	if (argc == 6) {
+		packetsize = 0;
+	}
+	else {
+		if (sscanf(argv[6], "%d", &packetsize) == 0 || packetsize < 0) {
+			fprintf(stderr,  "Invalid value for packetsize.\n");
+			exit(0);
+		}
+	}
+	if (argc != 8) {
+		buffersize = 0;
+	}
+	else {
+		if (sscanf(argv[7], "%d", &buffersize) == 0 || buffersize < 0) {
+			fprintf(stderr, "Invalid value for buffersize\n");
+			exit(0);
+		}
+		
+	}
+
+	/* Determine proper buffersize by finding the closest valid buffersize to the input value  */
+	if (buffersize != 0) {
+		if (packetsize != 0 && buffersize%(sizeof(long)*w*k*packetsize) != 0) { 
+			up = buffersize;
+			down = buffersize;
+			while (up%(sizeof(long)*w*k*packetsize) != 0 && (down%(sizeof(long)*w*k*packetsize) != 0)) {
+				up++;
+				if (down == 0) {
+					down--;
+				}
+			}
+			if (up%(sizeof(long)*w*k*packetsize) == 0) {
+				buffersize = up;
+			}
+			else {
+				if (down != 0) {
+					buffersize = down;
+				}
+			}
+		}
+		else if (packetsize == 0 && buffersize%(sizeof(long)*w*k) != 0) {
+			up = buffersize;
+			down = buffersize;
+			while (up%(sizeof(long)*w*k) != 0 && down%(sizeof(long)*w*k) != 0) {
+				up++;
+				down--;
+			}
+			if (up%(sizeof(long)*w*k) == 0) {
+				buffersize = up;
+			}
+			else {
+				buffersize = down;
+			}
+		}
+	}
+
+	/* Setting of coding technique and error checking */
+	
+	if (strcmp(argv[4], "no_coding") == 0) {
+		tech = No_Coding;
+	}
+	else if (strcmp(argv[4], "reed_sol_van") == 0) {
+		tech = Reed_Sol_Van;
+		if (w != 8 && w != 16 && w != 32) {
+			fprintf(stderr,  "w must be one of {8, 16, 32}\n");
+			exit(0);
+		}
+	}
+	else if (strcmp(argv[4], "reed_sol_r6_op") == 0) {
+		if (m != 2) {
+			fprintf(stderr,  "m must be equal to 2\n");
+			exit(0);
+		}
+		if (w != 8 && w != 16 && w != 32) {
+			fprintf(stderr,  "w must be one of {8, 16, 32}\n");
+			exit(0);
+		}
+		tech = Reed_Sol_R6_Op;
+	}
+	else if (strcmp(argv[4], "cauchy_orig") == 0) {
+		tech = Cauchy_Orig;
+		if (packetsize == 0) {
+			fprintf(stderr, "Must include packetsize.\n");
+			exit(0);
+		}
+	}
+	else if (strcmp(argv[4], "cauchy_good") == 0) {
+		tech = Cauchy_Good;
+		if (packetsize == 0) {
+			fprintf(stderr, "Must include packetsize.\n");
+			exit(0);
+		}
+	}
+	else if (strcmp(argv[4], "liberation") == 0) {
+		if (k > w) {
+			fprintf(stderr,  "k must be less than or equal to w\n");
+			exit(0);
+		}
+		if (w <= 2 || !(w%2) || !is_prime(w)) {
+			fprintf(stderr,  "w must be greater than two and w must be prime\n");
+			exit(0);
+		}
+		if (packetsize == 0) {
+			fprintf(stderr, "Must include packetsize.\n");
+			exit(0);
+		}
+		if ((packetsize%(sizeof(long))) != 0) {
+			fprintf(stderr,  "packetsize must be a multiple of sizeof(long)\n");
+			exit(0);
+		}
+		tech = Liberation;
+	}
+	else if (strcmp(argv[4], "blaum_roth") == 0) {
+		if (k > w) {
+			fprintf(stderr,  "k must be less than or equal to w\n");
+			exit(0);
+		}
+		if (w <= 2 || !((w+1)%2) || !is_prime(w+1)) {
+			fprintf(stderr,  "w must be greater than two and w+1 must be prime\n");
+			exit(0);
+		}
+		if (packetsize == 0) {
+			fprintf(stderr, "Must include packetsize.\n");
+			exit(0);
+		}
+		if ((packetsize%(sizeof(long))) != 0) {
+			fprintf(stderr,  "packetsize must be a multiple of sizeof(long)\n");
+			exit(0);
+		}
+		tech = Blaum_Roth;
+	}
+	else if (strcmp(argv[4], "liber8tion") == 0) {
+		if (packetsize == 0) {
+			fprintf(stderr, "Must include packetsize\n");
+			exit(0);
+		}
+		if (w != 8) {
+			fprintf(stderr, "w must equal 8\n");
+			exit(0);
+		}
+		if (m != 2) {
+			fprintf(stderr, "m must equal 2\n");
+			exit(0);
+		}
+		if (k > w) {
+			fprintf(stderr, "k must be less than or equal to w\n");
+			exit(0);
+		}
+		tech = Liber8tion;
+	}
+	else {
+		fprintf(stderr,  "Not a valid coding technique. Choose one of the following: reed_sol_van, reed_sol_r6_op, cauchy_orig, cauchy_good, liberation, blaum_roth, liber8tion, no_coding\n");
+		exit(0);
+	}
+
+	/* Set global variable method for signal handler */
+	method = tech;
+
+	/* Get current working directory for construction of file names */
+	curdir = (char*)malloc(sizeof(char)*1000);	
+	getcwd(curdir, 1000);
+
+        if (argv[1][0] != '-') {
+
+		/* Open file and error check */
+		fp = fopen(argv[1], "rb");
+		if (fp == NULL) {
+			fprintf(stderr,  "Unable to open file.\n");
+			exit(0);
+		}
+	
+		/* Create Coding directory */
+		i = mkdir("Coding", S_IRWXU);
+		if (i == -1 && errno != EEXIST) {
+			fprintf(stderr, "Unable to create Coding directory.\n");
+			exit(0);
+		}
+	
+		/* Determine original size of file */
+		stat(argv[1], &status);	
+		size = status.st_size;
+        } else {
+        	if (sscanf(argv[1]+1, "%d", &size) != 1 || size <= 0) {
+                	fprintf(stderr, "Files starting with '-' should be sizes for randomly created input\n");
+			exit(1);
+		}
+        	fp = NULL;
+		MOA_Seed(time(0));
+        }
+
+	newsize = size;
+	
+	/* Find new size by determining next closest multiple */
+	if (packetsize != 0) {
+		if (size%(k*w*packetsize*sizeof(long)) != 0) {
+			while (newsize%(k*w*packetsize*sizeof(long)) != 0) 
+				newsize++;
+		}
+	}
+	else {
+		if (size%(k*w*sizeof(long)) != 0) {
+			while (newsize%(k*w*sizeof(long)) != 0) 
+				newsize++;
+		}
+	}
+	
+	if (buffersize != 0) {
+		while (newsize%buffersize != 0) {
+			newsize++;
+		}
+	}
+
+
+	/* Determine size of k+m files */
+	blocksize = newsize/k;
+
+	/* Allow for buffersize and determine number of read-ins */
+	if (size > buffersize && buffersize != 0) {
+		if (newsize%buffersize != 0) {
+			readins = newsize/buffersize;
+		}
+		else {
+			readins = newsize/buffersize;
+		}
+		block = (char *)malloc(sizeof(char)*buffersize);
+		blocksize = buffersize/k;
+	}
+	else {
+		readins = 1;
+		buffersize = size;
+		block = (char *)malloc(sizeof(char)*newsize);
+	}
+	
+	/* Break inputfile name into the filename and extension */	
+	s1 = (char*)malloc(sizeof(char)*(strlen(argv[1])+20));
+	s2 = strrchr(argv[1], '/');
+	if (s2 != NULL) {
+		s2++;
+		strcpy(s1, s2);
+	}
+	else {
+		strcpy(s1, argv[1]);
+	}
+	s2 = strchr(s1, '.');
+	if (s2 != NULL) {
+          extension = strdup(s2);
+          *s2 = '\0';
+	} else {
+          extension = strdup("");
+        }
+	
+	/* Allocate for full file name */
+	fname = (char*)malloc(sizeof(char)*(strlen(argv[1])+strlen(curdir)+20));
+	sprintf(temp, "%d", k);
+	md = strlen(temp);
+	
+	/* Allocate data and coding */
+	data = (char **)malloc(sizeof(char*)*k);
+	coding = (char **)malloc(sizeof(char*)*m);
+	for (i = 0; i < m; i++) {
+		coding[i] = (char *)malloc(sizeof(char)*blocksize);
+                if (coding[i] == NULL) { perror("malloc"); exit(1); }
+	}
+
+	
+
+	/* Create coding matrix or bitmatrix and schedule */
+	gettimeofday(&t3, &tz);
+	switch(tech) {
+		case No_Coding:
+			break;
+		case Reed_Sol_Van:
+			matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+			break;
+		case Cauchy_Orig:
+			matrix = cauchy_original_coding_matrix(k, m, w);
+			bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+			schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+			break;
+		case Cauchy_Good:
+			matrix = cauchy_good_general_coding_matrix(k, m, w);
+			bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+			schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+			break;	
+		case Liberation:
+			bitmatrix = liberation_coding_bitmatrix(k, w);
+			schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+			break;
+		case Blaum_Roth:
+			bitmatrix = blaum_roth_coding_bitmatrix(k, w);
+			schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+			break;
+		case Liber8tion:
+			bitmatrix = liber8tion_coding_bitmatrix(k);
+			schedule = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+			break;
+	}
+	gettimeofday(&start, &tz);	
+	gettimeofday(&t4, &tz);
+	tsec = 0.0;
+	tsec += t4.tv_usec;
+	tsec -= t3.tv_usec;
+	tsec /= 1000000.0;
+	tsec += t4.tv_sec;
+	tsec -= t3.tv_sec;
+	totalsec += tsec;
+
+	
+
+	/* Read in data until finished */
+	n = 1;
+	total = 0;
+
+	while (n <= readins) {
+		/* Check if padding is needed, if so, add appropriate 
+		   number of zeros */
+		if (total < size && total+buffersize <= size) {
+			total += jfread(block, sizeof(char), buffersize, fp);
+		}
+		else if (total < size && total+buffersize > size) {
+			extra = jfread(block, sizeof(char), buffersize, fp);
+			for (i = extra; i < buffersize; i++) {
+				block[i] = '0';
+			}
+		}
+		else if (total == size) {
+			for (i = 0; i < buffersize; i++) {
+				block[i] = '0';
+			}
+		}
+	
+		/* Set pointers to point to file data */
+		for (i = 0; i < k; i++) {
+			data[i] = block+(i*blocksize);
+		}
+
+ 	 	gettimeofday(&t3, &tz);
+		/* Encode according to coding method */
+		switch(tech) {	
+			case No_Coding:
+				break;
+			case Reed_Sol_Van:
+				jerasure_matrix_encode(k, m, w, matrix, data, coding, blocksize);
+				break;
+			case Reed_Sol_R6_Op:
+				reed_sol_r6_encode(k, w, data, coding, blocksize);
+				break;
+			case Cauchy_Orig:
+				jerasure_schedule_encode(k, m, w, schedule, data, coding, blocksize, packetsize);
+				break;
+			case Cauchy_Good:
+				jerasure_schedule_encode(k, m, w, schedule, data, coding, blocksize, packetsize);
+				break;
+			case Liberation:
+				jerasure_schedule_encode(k, m, w, schedule, data, coding, blocksize, packetsize);
+				break;
+			case Blaum_Roth:
+				jerasure_schedule_encode(k, m, w, schedule, data, coding, blocksize, packetsize);
+				break;
+			case Liber8tion:
+				jerasure_schedule_encode(k, m, w, schedule, data, coding, blocksize, packetsize);
+				break;
+		}
+		gettimeofday(&t4, &tz);
+	
+		/* Write data and encoded data to k+m files */
+		for	(i = 1; i <= k; i++) {
+			if (fp == NULL) {
+				bzero(data[i-1], blocksize);
+ 			} else {
+				sprintf(fname, "%s/Coding/%s_k%0*d%s", curdir, s1, md, i, extension);
+				if (n == 1) {
+					fp2 = fopen(fname, "wb");
+				}
+				else {
+					fp2 = fopen(fname, "ab");
+				}
+				fwrite(data[i-1], sizeof(char), blocksize, fp2);
+				fclose(fp2);
+			}
+			
+		}
+		for	(i = 1; i <= m; i++) {
+			if (fp == NULL) {
+				bzero(data[i-1], blocksize);
+ 			} else {
+				sprintf(fname, "%s/Coding/%s_m%0*d%s", curdir, s1, md, i, extension);
+				if (n == 1) {
+					fp2 = fopen(fname, "wb");
+				}
+				else {
+					fp2 = fopen(fname, "ab");
+				}
+				fwrite(coding[i-1], sizeof(char), blocksize, fp2);
+				fclose(fp2);
+			}
+		}
+		n++;
+		/* Calculate encoding time */
+		tsec = 0.0;
+		tsec += t4.tv_usec;
+		tsec -= t3.tv_usec;
+		tsec /= 1000000.0;
+		tsec += t4.tv_sec;
+		tsec -= t3.tv_sec;
+		totalsec += tsec;
+	}
+
+	/* Create metadata file */
+        if (fp != NULL) {
+		sprintf(fname, "%s/Coding/%s_meta.txt", curdir, s1);
+		fp2 = fopen(fname, "wb");
+		fprintf(fp2, "%s\n", argv[1]);
+		fprintf(fp2, "%d\n", size);
+		fprintf(fp2, "%d %d %d %d %d\n", k, m, w, packetsize, buffersize);
+		fprintf(fp2, "%s\n", argv[4]);
+		fprintf(fp2, "%d\n", tech);
+		fprintf(fp2, "%d\n", readins);
+		fclose(fp2);
+	}
+
+
+	/* Free allocated memory */
+	free(s1);
+	free(fname);
+	free(block);
+	free(curdir);
+	
+	/* Calculate rate in MB/sec and print */
+	gettimeofday(&t2, &tz);
+	tsec = 0.0;
+	tsec += t2.tv_usec;
+	tsec -= t1.tv_usec;
+	tsec /= 1000000.0;
+	tsec += t2.tv_sec;
+	tsec -= t1.tv_sec;
+	printf("Encoding (MB/sec): %0.10f\n", (((double) size)/1024.0/1024.0)/totalsec);
+	printf("En_Total (MB/sec): %0.10f\n", (((double) size)/1024.0/1024.0)/tsec);
+}
+
+/* is_prime returns 1 if number if prime, 0 if not prime */
+int is_prime(int w) {
+	int prime55[] = {2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,
+	    73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,
+		    181,191,193,197,199,211,223,227,229,233,239,241,251,257};
+	int i;
+	for (i = 0; i < 55; i++) {
+		if (w%prime55[i] == 0) {
+			if (w == prime55[i]) return 1;
+			else { return 0; }
+		}
+	}
+}
+
+/* Handles ctrl-\ event */
+void ctrl_bs_handler(int dummy) {
+	time_t mytime;
+	mytime = time(0);
+	fprintf(stderr, "\n%s\n", ctime(&mytime));
+	fprintf(stderr, "You just typed ctrl-\\ in encoder.c.\n");
+	fprintf(stderr, "Total number of read ins = %d\n", readins);
+	fprintf(stderr, "Current read in: %d\n", n);
+	fprintf(stderr, "Method: %s\n\n", Methods[method]);	
+	signal(SIGQUIT, ctrl_bs_handler);
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_01.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_01.c
new file mode 100644
index 00000000..b6717c43
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_01.c
@@ -0,0 +1,92 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_01 r c w - creates and prints out a matrix in GF(2^w).\n\n");
+  fprintf(stderr, "       Element i,j is equal to 2^(i*c+j)\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates jerasure_print_matrix().\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  int r, c, w, i, n;
+  int *matrix;
+
+  if (argc != 4) usage(NULL);
+  if (sscanf(argv[1], "%d", &r) == 0 || r <= 0) usage("Bad r");
+  if (sscanf(argv[2], "%d", &c) == 0 || c <= 0) usage("Bad c");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0) usage("Bad w");
+
+  matrix = talloc(int, r*c);
+
+  n = 1;
+  for (i = 0; i < r*c; i++) {
+    matrix[i] = n;
+    n = galois_single_multiply(n, 2, w);
+  }
+
+  printf("jerasure_01");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_01");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  jerasure_print_matrix(matrix, r, c, w);
+  return 0;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_02.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_02.c
new file mode 100644
index 00000000..9f806bcd
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_02.c
@@ -0,0 +1,94 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_02 r c w - Converts the matrix of jerasure_01 to a bit matrix.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates jerasure_print_bitmatrix() and jerasure_matrix_to_bitmatrix().\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  int r, c, w, i, n;
+  int *matrix;
+  int *bitmatrix;
+
+  if (argc != 4) usage(NULL);
+  if (sscanf(argv[1], "%d", &r) == 0 || r <= 0) usage("Bad r");
+  if (sscanf(argv[2], "%d", &c) == 0 || c <= 0) usage("Bad c");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0) usage("Bad w");
+
+  matrix = talloc(int, r*c);
+
+  n = 1;
+  for (i = 0; i < r*c; i++) {
+    matrix[i] = n;
+    n = galois_single_multiply(n, 2, w);
+  }
+
+  bitmatrix = jerasure_matrix_to_bitmatrix(c, r, w, matrix);
+
+  printf("jerasure_02");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_02");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  jerasure_print_bitmatrix(bitmatrix, r*w, c*w, w);
+  return 0;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_03.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_03.c
new file mode 100644
index 00000000..1d1317b2
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_03.c
@@ -0,0 +1,119 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_03 k w - Creates a kxk Cauchy matrix in GF(2^w). \n\n");
+  fprintf(stderr, "       k must be < 2^w.  Element i,j is 1/(i+(2^w-j-1)).  (If that is\n");
+  fprintf(stderr, "       If that is 1/0, then it sets it to zero).  \n");
+  fprintf(stderr, "       It then tests whether that matrix is invertible.\n");
+  fprintf(stderr, "       If it is invertible, then it prints out the inverse.\n");
+  fprintf(stderr, "       Finally, it prints the product of the matrix and its inverse.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_print_matrix()\n");
+  fprintf(stderr, "                   jerasure_invertible_matrix()\n");
+  fprintf(stderr, "                   jerasure_invert_matrix()\n");
+  fprintf(stderr, "                   jerasure_matrix_multiply().\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  unsigned int k, w, i, j, n;
+  int *matrix;
+  int *matrix_copy;
+  int *inverse;
+  int *identity;
+
+  if (argc != 3) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &w) == 0 || w <= 0 || w > 31) usage("Bad w");
+  if (k >= (1 << w)) usage("K too big");
+
+  matrix = talloc(int, k*k);
+  matrix_copy = talloc(int, k*k);
+  inverse = talloc(int, k*k);
+
+  for (i = 0; i < k; i++) {
+    for (j = 0; j < k; j++) {
+      n = i ^ ((1 << w)-1-j);
+      matrix[i*k+j] = (n == 0) ? 0 : galois_single_divide(1, n, w);
+    }
+  }
+
+  printf("jerasure_03");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_03");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("The Cauchy Matrix:\n");
+  jerasure_print_matrix(matrix, k, k, w);
+  memcpy(matrix_copy, matrix, sizeof(int)*k*k);
+  i = jerasure_invertible_matrix(matrix_copy, k, w);
+  printf("\nInvertible: %s\n", (i == 1) ? "Yes" : "No");
+  if (i == 1) {
+    printf("\nInverse:\n");
+    memcpy(matrix_copy, matrix, sizeof(int)*k*k);
+    i = jerasure_invert_matrix(matrix_copy, inverse, k, w);
+    jerasure_print_matrix(inverse, k, k, w);
+    identity = jerasure_matrix_multiply(inverse, matrix, k, k, k, k, w);
+    printf("\nInverse times matrix (should be identity):\n");
+    jerasure_print_matrix(identity, k, k, w);
+  }
+  return 0;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_04.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_04.c
new file mode 100644
index 00000000..e550e3ff
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_04.c
@@ -0,0 +1,118 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_04 k w - Performs the analogous bit-matrix operations to jerasure_03.\n\n");
+  fprintf(stderr, "       It converts the matrix to a kw*kw bit matrix and does the same operations.\n");
+  fprintf(stderr, "       k must be < 2^w.\n");
+  fprintf(stderr, "This demonstrates: jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_matrix_to_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_invertible_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_invert_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_matrix_multiply().\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  unsigned int k, w, i, j, n;
+  int *matrix;
+  int *bitmatrix;
+  int *bitmatrix_copy;
+  int *inverse;
+  int *identity;
+
+  if (argc != 3) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &w) == 0 || w <= 0 || w > 31) usage("Bad w");
+  if (k >= (1 << w)) usage("K too big");
+
+  matrix = talloc(int, k*k);
+  bitmatrix_copy = talloc(int, k*w*k*w);
+  inverse = talloc(int, k*w*k*w);
+
+  for (i = 0; i < k; i++) {
+    for (j = 0; j < k; j++) {
+      n = i ^ ((1 << w)-1-j);
+      matrix[i*k+j] = (n == 0) ? 0 : galois_single_divide(1, n, w);
+    }
+  }
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, k, w, matrix);
+
+  printf("jerasure_04");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_04");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("The Cauchy Bit-Matrix:\n");
+  jerasure_print_bitmatrix(bitmatrix, k*w, k*w, w);
+  memcpy(bitmatrix_copy, bitmatrix, sizeof(int)*k*w*k*w);
+  i = jerasure_invertible_bitmatrix(bitmatrix_copy, k*w);
+  printf("\nInvertible: %s\n", (i == 1) ? "Yes" : "No");
+  if (i == 1) {
+    printf("\nInverse:\n");
+    memcpy(bitmatrix_copy, bitmatrix, sizeof(int)*k*w*k*w);
+    i = jerasure_invert_bitmatrix(bitmatrix_copy, inverse, k*w);
+    jerasure_print_bitmatrix(inverse, k*w, k*w, w);
+    identity = jerasure_matrix_multiply(inverse, bitmatrix, k*w, k*w, k*w, k*w, 2);
+    printf("\nInverse times matrix (should be identity):\n");
+    jerasure_print_bitmatrix(identity, k*w, k*w, w);
+  }
+  return 0;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_05.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_05.c
new file mode 100644
index 00000000..b74901d6
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_05.c
@@ -0,0 +1,220 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_05 k m w size seed - Does a simple Reed-Solomon coding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       k+m must be <= 2^w.  w can be 8, 16 or 32.\n");
+  fprintf(stderr, "       It sets up a Cauchy generator matrix and encodes\n");
+  fprintf(stderr, "       k devices of size bytes with it.  Then it decodes.\n");
+  fprintf(stderr, "       After that, it decodes device 0 by using jerasure_make_decoding_matrix()\n");
+  fprintf(stderr, "       and jerasure_matrix_dotprod().\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_matrix_encode()\n");
+  fprintf(stderr, "                   jerasure_matrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   jerasure_make_decoding_matrix()\n");
+  fprintf(stderr, "                   jerasure_matrix_dotprod()\n");
+  if (s != NULL) fprintf(stderr, "\n%s\n\n", s);
+  exit(1);
+}
+
+static void print_data_and_coding(int k, int m, int w, int size, 
+		char **data, char **coding) 
+{
+  int i, j, x;
+  int n, sp;
+  long l;
+
+  if(k > m) n = k;
+  else n = m;
+  sp = size * 2 + size/(w/8) + 8;
+
+  printf("%-*sCoding\n", sp, "Data");
+  for(i = 0; i < n; i++) {
+	  if(i < k) {
+		  printf("D%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)data[i][j+x]);
+			  }
+		  }
+		  printf("    ");
+	  }
+	  else printf("%*s", sp, "");
+	  if(i < m) {
+		  printf("C%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)coding[i][j+x]);
+			  }
+		  }
+	  }
+	  printf("\n");
+  }
+	printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, m, w, size;
+  int i, j;
+  int *matrix;
+  char **data, **coding;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  uint32_t seed;
+  
+  if (argc != 6) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (w < 32 && k + m > (1 << w)) usage("k + m must be <= 2 ^ w");
+  if (sscanf(argv[4], "%d", &size) == 0 || size % sizeof(long) != 0) 
+		usage("size must be multiple of sizeof(long)");
+  if (sscanf(argv[5], "%d", &seed) == 0) usage("Bad seed");
+
+  matrix = talloc(int, m*k);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[i*k+j] = galois_single_divide(1, i ^ (m + j), w);
+    }
+  }
+
+  printf("jerasure_05");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_05");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("The Coding Matrix (the last m rows of the Generator Matrix G^T):\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  MOA_Seed(seed);
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, size);
+    MOA_Fill_Random_Region(data[i], size);
+  }
+
+  coding = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, size);
+  }
+
+  jerasure_matrix_encode(k, m, w, matrix, data, coding, size);
+  
+  printf("Encoding Complete:\n\n");
+  print_data_and_coding(k, m, w, size, data, coding);
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  l = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = (MOA_Random_W(w, 1))%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+	  
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], size);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  print_data_and_coding(k, m, w, size, data, coding);
+  
+  i = jerasure_matrix_decode(k, m, w, matrix, 0, erasures, data, coding, size);
+
+  printf("State of the system after decoding:\n\n");
+  print_data_and_coding(k, m, w, size, data, coding);
+  
+  decoding_matrix = talloc(int, k*k);
+  dm_ids = talloc(int, k);
+
+  for (i = 0; i < m; i++) erased[i] = 1;
+  for (; i < k+m; i++) erased[i] = 0;
+
+  jerasure_make_decoding_matrix(k, m, w, matrix, erased, decoding_matrix, dm_ids);
+
+  printf("Suppose we erase the first %d devices.  Here is the decoding matrix:\n\n", m);
+  jerasure_print_matrix(decoding_matrix, k, k, w);
+  printf("\n");
+  printf("And dm_ids:\n\n");
+  jerasure_print_matrix(dm_ids, 1, k, w);
+
+  bzero(data[0], size);
+  jerasure_matrix_dotprod(k, w, decoding_matrix, dm_ids, 0, data, coding, size);
+
+  printf("\nAfter calling jerasure_matrix_dotprod, we calculate the value of device #0 to be:\n\n");
+  printf("D0 :");
+  for(i=0;i< size; i+=(w/8)) {
+	  printf(" ");
+	  for(j=0;j < w/8;j++){
+		printf("%02x", (unsigned char)data[0][i+j]);
+	  }
+  }
+  printf("\n\n");
+
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_06.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_06.c
new file mode 100644
index 00000000..69f83575
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_06.c
@@ -0,0 +1,234 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_06 k m w packetsize seed\n");
+  fprintf(stderr, "Does a simple Cauchy Reed-Solomon coding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       k+m must be < 2^w.  Packetsize must be a multiple of sizeof(long)\n");
+  fprintf(stderr, "       It sets up a Cauchy generator matrix and encodes k devices of w*packetsize bytes.\n");
+  fprintf(stderr, "       After that, it decodes device 0 by using jerasure_make_decoding_bitmatrix()\n");
+  fprintf(stderr, "       and jerasure_bitmatrix_dotprod().\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_bitmatrix_encode()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_make_decoding_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_bitmatrix_dotprod()\n");
+  if (s != NULL) fprintf(stderr, "\n%s\n\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m, psize, x;
+  int *matrix, *bitmatrix;
+  char **data, **coding;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  uint32_t seed;
+  
+  if (argc != 6) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+  if (sscanf(argv[4], "%d", &psize) == 0 || psize <= 0) usage("Bad packetsize");
+  if(psize%sizeof(long) != 0) usage("Packetsize must be multiple of sizeof(long)");
+  if (sscanf(argv[5], "%d", &seed) == 0) usage("Bad seed");
+
+  MOA_Seed(seed);
+  matrix = talloc(int, m*k);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[i*k+j] = galois_single_divide(1, i ^ (m + j), w);
+    }
+  }
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  printf("jerasure_06");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_06");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+
+  printf("
    \n");
+  printf("Last (m * w) rows of the Generator Matrix: (G^T):\n
    \n");
+  jerasure_print_bitmatrix(bitmatrix, w*m, w*k, w);
+  printf("
    \n");
+
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, psize*w);
+    MOA_Fill_Random_Region(data[i], psize*w);
+  }
+
+  coding = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, psize*w);
+  }
+
+  jerasure_bitmatrix_encode(k, m, w, bitmatrix, data, coding, w*psize, psize);
+  
+  printf("Encoding Complete - Here is the state of the system\n\n");
+  printf("
    \n");
+  print_array(data, k, psize*w, psize, "D");
+  printf("
    \n");
+  print_array(coding, m, psize*w, psize, "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(w, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], psize*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:", m);
+  for (i = 0; erasures[i] != -1; i++) {
+    printf(" %c%x", ((erasures[i] < k) ? 'D' : 'C'), (erasures[i] < k ? erasures[i] : erasures[i]-k));
+  }
+  printf(". Here is the state of the system:\n");
+
+  printf("
    \n");
+  print_array(data, k, psize*w, psize, "D");
+  printf("
    \n");
+  print_array(coding, m, psize*w, psize, "C");
+  printf("
    \n");
+
+  i = jerasure_bitmatrix_decode(k, m, w, bitmatrix, 0, erasures, data, coding, 
+		  w*psize, psize);
+
+  printf("Here is the state of the system after decoding:\n\n");
+  printf("
    \n");
+  print_array(data, k, psize*w, psize, "D");
+  printf("
    \n");
+  print_array(coding, m, psize*w, psize, "C");
+  printf("
    \n");
+
+  decoding_matrix = talloc(int, k*k*w*w);
+  dm_ids = talloc(int, k);
+
+  x = (m < k) ? m : k;
+
+  for (i = 0; i < x; i++) erased[i] = 1;
+  for (; i < k+m; i++) erased[i] = 0;
+
+  jerasure_make_decoding_bitmatrix(k, m, w, bitmatrix, erased, decoding_matrix, dm_ids);
+
+  printf("Suppose we erase the first %d devices.  Here is the decoding matrix:\n
    \n", x);
+  jerasure_print_bitmatrix(decoding_matrix, k*w, k*w, w);
+  printf("
    \n");
+  printf("And dm_ids:\n
    \n");
+  jerasure_print_matrix(dm_ids, 1, k, w);
+  printf("
    \n");
+
+  for (i = 0; i < x; i++) bzero(data[i], w*psize);
+
+  printf("Here is the state of the system after the erasures:\n\n");
+  printf("
    \n");
+  print_array(data, k, psize*w, psize, "D");
+  printf("
    \n");
+  print_array(coding, m, psize*w, psize, "C");
+  printf("
    \n");
+
+  for (i = 0; i < x; i++) {
+    jerasure_bitmatrix_dotprod(k, w, decoding_matrix+i*(k*w*w), dm_ids, i, data, coding, w*psize, psize);
+  }
+
+  printf("Here is the state of the system after calling jerasure_bitmatrix_dotprod() %d time%s with the decoding matrix:\n\n", x, (x == 1) ? "" : "s");
+  printf("
    \n");
+  print_array(data, k, psize*w, psize, "D");
+  printf("
    \n");
+  print_array(coding, m, psize*w, psize, "C");
+  printf("
    \n");
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_07.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_07.c
new file mode 100644
index 00000000..74794c37
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_07.c
@@ -0,0 +1,224 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_07 k m w seed - Scheduled Cauchy Reed-Solomon coding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       k+m must be <= 2^w.  It sets up a Cauchy generator matrix and encodes\n");
+  fprintf(stderr, "       k sets of w*%ld bytes. It uses bit-matrix scheduling, both smart and dumb.\n", sizeof(long));
+  fprintf(stderr, "       It decodes using bit-matrix scheduling, then shows an example of\n");
+  fprintf(stderr, "       using jerasure_do_scheduled_operations().\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_dumb_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_lazy()\n");
+  fprintf(stderr, "                   jerasure_do_scheduled_operations()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *matrix, *bitmatrix;
+  char **data, **coding, **ptrs;
+  int **smart, **dumb;
+  int *erasures, *erased;
+  double stats[3];
+  uint32_t seed;
+  
+  if (argc != 5) usage("Wrong number of arguments");
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+
+  matrix = talloc(int, m*k);
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[i*k+j] = galois_single_divide(1, i ^ (m + j), w);
+    }
+  }
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  printf("jerasure_07");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_07");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("Last m*w rows of the generator matrix (G^T):\n
    \n");
+  jerasure_print_bitmatrix(bitmatrix, w*m, w*k, w);
+  printf("
    \n");
+  
+  dumb = jerasure_dumb_bitmatrix_to_schedule(k, m, w, bitmatrix);
+  smart = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+
+  MOA_Seed(seed);
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+  }
+
+  coding = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_schedule_encode(k, m, w, dumb, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+  printf("Dumb Encoding Complete: - %.0lf XOR'd bytes.  State of the system:\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_schedule_encode(k, m, w, smart, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+  printf("Smart Encoding Complete: - %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(w, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, w*sizeof(long), sizeof(long), 1);
+  jerasure_get_stats(stats);
+
+  printf("State of the system after decoding: %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  ptrs = talloc(char *, (k+m));
+  for (i = 0; i < k; i++) ptrs[i] = data[i];
+  for (i = 0; i < m; i++) ptrs[k+i] = coding[i];
+
+  for (j = 0; j < m; j++) bzero(coding[j], sizeof(long)*w);
+  printf("State of the system after erasing the coding devices:\n");
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  jerasure_do_scheduled_operations(ptrs, smart, sizeof(long));
+  printf("And using jerasure_do_scheduled_operations(): %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/jerasure_08.c b/src/erasure-code/jerasure/jerasure/Examples/jerasure_08.c
new file mode 100644
index 00000000..1894a7fb
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/jerasure_08.c
@@ -0,0 +1,233 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: jerasure_08 k w seed - Example schedule cache usage with RAID-6\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       m=2.  k+m must be <= 2^w.  It sets up a RAID-6 generator matrix and encodes\n");
+  fprintf(stderr, "       k sets of w*%ld bytes. It creates a schedule cache for decoding.\n", sizeof(long));
+  fprintf(stderr, "       It demonstrates using the schedule cache for both encoding and decoding.\n");
+  fprintf(stderr, "       Then it demonstrates using jerasure_do_parity() to re-encode the first.\n");
+  fprintf(stderr, "       coding device\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_generate_schedule_cache()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_cache()\n");
+  fprintf(stderr, "                   jerasure_free_schedule()\n");
+  fprintf(stderr, "                   jerasure_free_schedule_cache()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  fprintf(stderr, "                   jerasure_do_parity()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *matrix, *bitmatrix;
+  char **data, **coding, **ptrs;
+  int **smart, ***cache;
+  int *erasures, *erased;
+  double stats[3];
+  uint32_t seed;
+  
+  if (argc != 4) usage("Wrong number of arguments");
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad m");
+  if (sscanf(argv[3], "%d", &seed) == 0) usage("Bad seed");
+  m = 2;
+  if (w < 30 && (k+m) > (1 << w)) usage("k + m is too big");
+
+  MOA_Seed(seed);
+
+  matrix = talloc(int, m*k);
+  for (j = 0; j < k; j++) matrix[j] = 1;
+  i = 1;
+  for (j = 0; j < k; j++) {
+    matrix[k+j] = i;
+    i = galois_single_multiply(i, 2, w);
+  }
+  bitmatrix = jerasure_matrix_to_bitmatrix(k, m, w, matrix);
+
+  smart = jerasure_smart_bitmatrix_to_schedule(k, m, w, bitmatrix);
+  cache = jerasure_generate_schedule_cache(k, m, w, bitmatrix, 1);
+
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+  }
+
+  coding = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_schedule_encode(k, m, w, smart, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+
+  printf("jerasure_08");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    jerasure_08");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("Encoding Complete: - %.0lf XOR'd bytes.  Here is the state of the system:\n
    \n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erasures[0] = k;
+  erasures[1] = k+1;
+  erasures[2] = -1;
+  for (j = 0; j < m; j++) bzero(coding[j], sizeof(long)*w);
+
+  jerasure_schedule_decode_cache(k, m, w, cache, erasures, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+  printf("Encoding Using the Schedule Cache: - %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(w, 1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  jerasure_schedule_decode_cache(k, m, w, cache, erasures, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+
+  printf("State of the system after decoding: %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  bzero(coding[0], sizeof(long)*w);
+  printf("Erased the first coding device:\n\n", m);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  jerasure_do_parity(k, data, coding[0], sizeof(long)*w);
+  printf("State of the system after using\n");
+  printf("jerasure_do_parity() to re-encode it:\n\n");
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  jerasure_free_schedule(smart);
+  jerasure_free_schedule_cache(k, m, cache);
+  
+  printf("Smart schedule and cache freed.\n\n");
+
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/liberation_01.c b/src/erasure-code/jerasure/jerasure/Examples/liberation_01.c
new file mode 100644
index 00000000..2cd1862f
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/liberation_01.c
@@ -0,0 +1,193 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "liberation.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: liberation_01 k w seed - Liberation RAID-6 coding/decoding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       w must be prime and k <= w.  It sets up a Liberation bit-matrix\n");
+  fprintf(stderr, "       then it encodes k devices of w*%ld bytes using dumb bit-matrix scheduling.\n", sizeof(long));
+  fprintf(stderr, "       It decodes using smart bit-matrix scheduling.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: liberation_coding_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_smart_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_dumb_bitmatrix_to_schedule()\n");
+  fprintf(stderr, "                   jerasure_schedule_encode()\n");
+  fprintf(stderr, "                   jerasure_schedule_decode_lazy()\n");
+  fprintf(stderr, "                   jerasure_print_bitmatrix()\n");
+  fprintf(stderr, "                   jerasure_get_stats()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static print_array(char **ptrs, int ndevices, int size, int packetsize, char *label)
+{
+  int i, j, x;
+  unsigned char *up;
+
+  printf("
    \n");
+
+  for (i = 0; i < ndevices; i++) printf("\n", label, i);
+  printf("\n");
+  printf("\n");
+  for (i = 0; i < ndevices; i++) {
+    printf("\n");
+  }
+  printf("
    %s%x
    ");
+  for (j = 0; j < size/packetsize; j++) printf("Packet %d\n", j);
+  printf("
    ");
+    up = (unsigned char *) ptrs[i];
+    for (j = 0; j < size/packetsize; j++) {
+      for (x = 0; x < packetsize; x++) {
+        if (x > 0 && x%4 == 0) printf(" ");
+        printf("%02x", up[j*packetsize+x]);
+      }
+      printf("\n");
+    }
+    printf("
    \n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *bitmatrix;
+  char **data, **coding, **ptrs;
+  int **dumb;
+  int *erasures, *erased;
+  double stats[3];
+  uint32_t seed;
+  
+  if (argc != 4) usage("Wrong number of arguments");
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (sscanf(argv[3], "%u", &seed) == 0) usage("Bad seed");
+  m = 2;
+  if (w < k) usage("k is too big");
+  for (i = 2; i*i <= w; i++) if (w%i == 0) usage("w isn't prime");
+
+  bitmatrix = liberation_coding_bitmatrix(k, w);
+  if (bitmatrix == NULL) {
+    usage("couldn't make coding matrix");
+  }
+
+  printf("liberation_01");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    liberation_01");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("Coding Bit-Matrix:\n
    \n");
+  jerasure_print_bitmatrix(bitmatrix, w*m, w*k, w);
+  printf("
    \n");
+
+  dumb = jerasure_dumb_bitmatrix_to_schedule(k, m, w, bitmatrix);
+
+  MOA_Seed(seed);
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long)*w);
+    MOA_Fill_Random_Region(data[i], sizeof(long)*w);
+  }
+
+  coding = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long)*w);
+  }
+
+  jerasure_schedule_encode(k, m, w, dumb, data, coding, w*sizeof(long), sizeof(long));
+  jerasure_get_stats(stats);
+  printf("Smart Encoding Complete: - %.0lf XOR'd bytes.  State of the system:\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(30,1)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], sizeof(long)*w);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  jerasure_schedule_decode_lazy(k, m, w, bitmatrix, erasures, data, coding, w*sizeof(long), sizeof(long), 1);
+  jerasure_get_stats(stats);
+
+  printf("State of the system after decoding: %.0lf XOR'd bytes\n\n", stats[0]);
+  printf("
    \n");
+  print_array(data, k, sizeof(long)*w, sizeof(long), "D");
+  printf("
    \n");
+  print_array(coding, m, sizeof(long)*w, sizeof(long), "C");
+  printf("
    \n");
+  
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/makefile.orig b/src/erasure-code/jerasure/jerasure/Examples/makefile.orig
new file mode 100644
index 00000000..d838ee66
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/makefile.orig
@@ -0,0 +1,203 @@
+# Examples/makefile
+# Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure Coding Techniques
+# 
+# Revision 1.2A
+# May 24, 2011
+# 
+# James S. Plank
+# Department of Electrical Engineering and Computer Science
+# University of Tennessee
+# Knoxville, TN 37996
+# plank@cs.utk.edu
+# 
+# Copyright (c) 2011, James S. Plank
+# All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 
+#  - Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 
+#  - Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 
+#  - Neither the name of the University of Tennessee nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+# WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+
+PREFIX=/usr/local
+BINDIR=${PREFIX}/bin
+LIBDIR=${PREFIX}/lib
+INCDIR=${PREFIX}/include
+CC = gcc  
+CFLAGS = -O2 -I$(HOME)/include
+
+ALL =	jerasure_01 \
+        jerasure_02 \
+        jerasure_03 \
+        jerasure_04 \
+        jerasure_05 \
+        jerasure_06 \
+        jerasure_07 \
+        jerasure_08 \
+        reed_sol_01 \
+        reed_sol_02 \
+        reed_sol_03 \
+        reed_sol_04 \
+        reed_sol_test_gf \
+        reed_sol_time_gf \
+        reed_sol_hard_time_gf \
+        cauchy_01 \
+        cauchy_02 \
+        cauchy_03 \
+        cauchy_04 \
+        liberation_01 \
+		encoder \
+		decoder \
+
+all: $(ALL)
+
+clean:
+	rm -f core *.o $(ALL) a.out cauchy.h cauchy.c liberation.h liberation.c reed_sol.c reed_sol.h\
+              jerasure.c jerasure.h galois.c galois.h
+
+.SUFFIXES: .c .o
+.c.o:
+	$(CC) $(CFLAGS) -c $*.c
+
+liberation.h: ../liberation.h
+	rm -f liberation.h ; cp ../liberation.h . ; chmod 0444 liberation.h
+
+liberation.c: ../liberation.c
+	rm -f liberation.c ; cp ../liberation.c . ; chmod 0444 liberation.c
+
+cauchy.h: ../cauchy.h
+	rm -f cauchy.h ; cp ../cauchy.h . ; chmod 0444 cauchy.h
+
+cauchy.c: ../cauchy.c
+	rm -f cauchy.c ; cp ../cauchy.c . ; chmod 0444 cauchy.c
+
+reed_sol.h: ../reed_sol.h
+	rm -f reed_sol.h ; cp ../reed_sol.h . ; chmod 0444 reed_sol.h
+
+reed_sol.c: ../reed_sol.c
+	rm -f reed_sol.c ; cp ../reed_sol.c . ; chmod 0444 reed_sol.c
+
+jerasure.h: ../jerasure.h
+	rm -f jerasure.h ; cp ../jerasure.h . ; chmod 0444 jerasure.h
+
+jerasure.c: ../jerasure.c
+	rm -f jerasure.c ; cp ../jerasure.c . ; chmod 0444 jerasure.c
+
+galois.h: ../galois.h
+	rm -f galois.h ; cp ../galois.h . ; chmod 0444 galois.h
+
+galois.c: ../galois.c
+	rm -f galois.c ; cp ../galois.c . ; chmod 0444 galois.c
+
+jerasure.o: jerasure.h galois.h
+
+jerasure_01.o: galois.h jerasure.h 
+jerasure_01: jerasure_01.o galois.o jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_01 jerasure_01.o jerasure.o galois.o -lgf_complete
+
+jerasure_02.o: galois.h jerasure.h 
+jerasure_02: jerasure_02.o galois.o jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_02 jerasure_02.o jerasure.o galois.o -lgf_complete
+
+jerasure_03.o: galois.h jerasure.h 
+jerasure_03: jerasure_03.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_03 jerasure_03.o jerasure.o galois.o -lgf_complete
+
+jerasure_04.o: galois.h jerasure.h 
+jerasure_04: jerasure_04.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_04 jerasure_04.o jerasure.o galois.o -lgf_complete
+
+jerasure_05.o: galois.h jerasure.h 
+jerasure_05: jerasure_05.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_05 jerasure_05.o jerasure.o galois.o -lgf_complete
+
+jerasure_06.o: galois.h jerasure.h 
+jerasure_06: jerasure_06.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_06 jerasure_06.o jerasure.o galois.o -lgf_complete
+
+jerasure_07.o: galois.h jerasure.h 
+jerasure_07: jerasure_07.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_07 jerasure_07.o jerasure.o galois.o -lgf_complete
+
+jerasure_08.o: galois.h jerasure.h 
+jerasure_08: jerasure_08.o galois.o  jerasure.o
+	$(CC) $(CFLAGS) -o jerasure_08 jerasure_08.o jerasure.o galois.o -lgf_complete
+
+reed_sol_01.o: galois.h reed_sol.h jerasure.h
+reed_sol_01: reed_sol_01.o galois.o  jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_01 reed_sol_01.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+reed_sol_02.o: galois.h reed_sol.h jerasure.h
+reed_sol_02: reed_sol_02.o galois.o  jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_02 reed_sol_02.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+reed_sol_03.o: galois.h reed_sol.h jerasure.h
+reed_sol_03: reed_sol_03.o galois.o  jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_03 reed_sol_03.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+reed_sol_04.o: galois.h reed_sol.h jerasure.h
+reed_sol_04: reed_sol_04.o galois.o  jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_04 reed_sol_04.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+cauchy_01.o: galois.h cauchy.h jerasure.h
+cauchy_01: cauchy_01.o galois.o  jerasure.o cauchy.o
+	$(CC) $(CFLAGS) -o cauchy_01 cauchy_01.o cauchy.o jerasure.o galois.o -lgf_complete
+
+cauchy_02.o: galois.h cauchy.h jerasure.h
+cauchy_02: cauchy_02.o galois.o  jerasure.o cauchy.o
+	$(CC) $(CFLAGS) -o cauchy_02 cauchy_02.o cauchy.o jerasure.o galois.o -lgf_complete
+
+cauchy_03.o: galois.h cauchy.h jerasure.h
+cauchy_03: cauchy_03.o galois.o  jerasure.o cauchy.o
+	$(CC) $(CFLAGS) -o cauchy_03 cauchy_03.o cauchy.o jerasure.o galois.o -lgf_complete
+
+cauchy_04.o: galois.h cauchy.h jerasure.h
+cauchy_04: cauchy_04.o galois.o  jerasure.o cauchy.o
+	$(CC) $(CFLAGS) -o cauchy_04 cauchy_04.o cauchy.o jerasure.o galois.o -lgf_complete
+
+liberation_01.o: galois.h liberation.h jerasure.h
+liberation_01: liberation_01.o galois.o  jerasure.o liberation.o
+	$(CC) $(CFLAGS) -o liberation_01 liberation_01.o liberation.o jerasure.o galois.o -lgf_complete
+
+encoder.o: galois.h liberation.h jerasure.h reed_sol.h cauchy.h
+encoder: encoder.o galois.o  jerasure.o liberation.o reed_sol.o cauchy.o
+	$(CC) $(CFLAGS) -o encoder encoder.o liberation.o jerasure.o galois.o  reed_sol.o cauchy.o -lgf_complete
+
+decoder.o: galois.h liberation.h jerasure.h reed_sol.h cauchy.h
+decoder: decoder.o galois.o  jerasure.o liberation.o reed_sol.o cauchy.o
+	$(CC) $(CFLAGS) -o decoder decoder.o liberation.o jerasure.o galois.o  reed_sol.o cauchy.o -lgf_complete
+
+reed_sol_test_gf.o: galois.h reed_sol.h jerasure.h
+reed_sol_test_gf: reed_sol_test_gf.o galois.o jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_test_gf reed_sol_test_gf.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+reed_sol_time_gf.o: galois.h reed_sol.h jerasure.h
+reed_sol_time_gf: reed_sol_time_gf.o galois.o jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_time_gf reed_sol_time_gf.o reed_sol.o jerasure.o galois.o -lgf_complete
+
+reed_sol_hard_time_gf.o: galois.h reed_sol.h jerasure.h
+reed_sol_hard_time_gf: reed_sol_hard_time_gf.o galois.o jerasure.o reed_sol.o
+	$(CC) $(CFLAGS) -o reed_sol_hard_time_gf reed_sol_hard_time_gf.o reed_sol.o jerasure.o galois.o -lgf_complete
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_01.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_01.c
new file mode 100644
index 00000000..32641b55
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_01.c
@@ -0,0 +1,197 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_01 k m w seed - Does a simple Reed-Solomon coding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "w must be 8, 16 or 32.  k+m must be <= 2^w.  It sets up a classic\n");
+  fprintf(stderr, "Vandermonde-based generator matrix and encodes k devices of\n");
+  fprintf(stderr, "%ld bytes each with it.  Then it decodes.\n", sizeof(long));
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: jerasure_matrix_encode()\n");
+  fprintf(stderr, "                   jerasure_matrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   reed_sol_vandermonde_coding_matrix()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+static void print_data_and_coding(int k, int m, int w, int size, 
+		char **data, char **coding) 
+{
+  int i, j, x;
+  int n, sp;
+  long l;
+
+  if(k > m) n = k;
+  else n = m;
+  sp = size * 2 + size/(w/8) + 8;
+
+  printf("%-*sCoding\n", sp, "Data");
+  for(i = 0; i < n; i++) {
+	  if(i < k) {
+		  printf("D%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)data[i][j+x]);
+			  }
+		  }
+		  printf("    ");
+	  }
+	  else printf("%*s", sp, "");
+	  if(i < m) {
+		  printf("C%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)coding[i][j+x]);
+			  }
+		  }
+	  }
+	  printf("\n");
+  }
+	printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *matrix;
+  char **data, **coding, **dcopy, **ccopy;
+  unsigned char uc;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  uint32_t seed;
+  
+  if (argc != 5) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (sscanf(argv[4], "%u", &seed) == 0) usage("Bad seed");
+  if (w <= 16 && k + m > (1 << w)) usage("k + m is too big");
+
+  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+
+  printf("reed_sol_01 %d %d %d %d\n", k, m, w, seed);
+  printf("
    reed_sol_01 %d %d %d %d
    \n", k, m, w, seed);
+  printf("
    \n");
+  printf("Last m rows of the generator Matrix (G^T):\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  MOA_Seed(seed);
+  data = talloc(char *, k);
+  dcopy = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long));
+    dcopy[i] = talloc(char, sizeof(long));
+    for (j = 0; j < sizeof(long); j++) {
+      uc = MOA_Random_W(8, 1);
+      data[i][j] = (char) uc;
+    }
+    memcpy(dcopy[i], data[i], sizeof(long));
+  }
+
+  coding = talloc(char *, m);
+  ccopy = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long));
+    ccopy[i] = talloc(char, sizeof(long));
+  }
+
+  jerasure_matrix_encode(k, m, w, matrix, data, coding, sizeof(long));
+
+  for (i = 0; i < m; i++) {
+    memcpy(ccopy[i], coding[i], sizeof(long));
+  }
+  
+  printf("Encoding Complete:\n\n");
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  l = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = MOA_Random_W(31, 0)%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      memcpy((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], &l, sizeof(long));
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+  
+  i = jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, sizeof(long));
+
+  printf("State of the system after decoding:\n\n");
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+  
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_02.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_02.c
new file mode 100644
index 00000000..445e91e1
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_02.c
@@ -0,0 +1,105 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_02 k m w - Vandermonde matrices in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       k+m must be <= 2^w.  This simply prints out the \n");
+  fprintf(stderr, "       Vandermonde matrix in GF(2^w), and then the generator\n");
+  fprintf(stderr, "       matrix that is constructed from it.  See [Plank-Ding-05] for\n");
+  fprintf(stderr, "       information on how this construction proceeds\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: reed_sol_extended_vandermonde_matrix()\n");
+  fprintf(stderr, "                   reed_sol_big_vandermonde_coding_matrix()\n");
+  fprintf(stderr, "                   reed_sol_vandermonde_coding_matrix()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *matrix;
+  
+  if (argc != 4) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || w <= 0 || w > 32) usage("Bad w");
+  if (w <= 30 && k + m > (1 << w)) usage("k + m is too big");
+
+  matrix = reed_sol_extended_vandermonde_matrix(k+m, k, w);
+
+  printf("reed_sol_02 %d %d %d\n", k, m, w);
+  printf("
    reed_sol_02 %d %d %d
    \n", k, m, w);
+  printf("
    \n");
+  printf("Extended Vandermonde Matrix:\n\n");
+  jerasure_print_matrix(matrix, k+m, k, w);
+  printf("\n");
+
+  matrix = reed_sol_big_vandermonde_distribution_matrix(k+m, k, w);
+  printf("Vandermonde Generator Matrix (G^T):\n\n");
+  jerasure_print_matrix(matrix, k+m, k, w);
+  printf("\n");
+
+  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+  printf("Vandermonde Coding Matrix:\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_03.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_03.c
new file mode 100644
index 00000000..54407957
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_03.c
@@ -0,0 +1,197 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_03 k w seed - Does a simple RAID-6 coding example in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       w must be 8, 16 or 32.  k+2 must be <= 2^w.  It sets up a classic\n");
+  fprintf(stderr, "       RAID-6 coding matrix based on Anvin's optimization and encodes\n");
+  fprintf(stderr, "       %ld-byte devices with it.  Then it decodes.\n", sizeof(long));
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: reed_sol_r6_encode()\n");
+  fprintf(stderr, "                   reed_sol_r6_coding_matrix()\n");
+  fprintf(stderr, "                   jerasure_matrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+
+static void print_data_and_coding(int k, int m, int w, int size, 
+		char **data, char **coding) 
+{
+  int i, j, x;
+  int n, sp;
+  long l;
+
+  if(k > m) n = k;
+  else n = m;
+  sp = size * 2 + size/(w/8) + 8;
+
+  printf("%-*sCoding\n", sp, "Data");
+  for(i = 0; i < n; i++) {
+	  if(i < k) {
+		  printf("D%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)data[i][j+x]);
+			  }
+		  }
+		  printf("    ");
+	  }
+	  else printf("%*s", sp, "");
+	  if(i < m) {
+		  printf("C%-2d:", i);
+		  for(j=0;j< size; j+=(w/8)) { 
+			  printf(" ");
+			  for(x=0;x < w/8;x++){
+				printf("%02x", (unsigned char)coding[i][j+x]);
+			  }
+		  }
+	  }
+	  printf("\n");
+  }
+	printf("\n");
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  unsigned char uc;
+  int k, w, i, j, m;
+  int *matrix;
+  char **data, **coding, **dcopy, **ccopy;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  uint32_t seed;
+  
+  if (argc != 4) usage(NULL);
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (sscanf(argv[3], "%d", &seed) == 0) usage("Bad seed");
+  m = 2;
+  if (w <= 16 && k + m > (1 << w)) usage("k + m is too big");
+
+  MOA_Seed(seed);
+  matrix = reed_sol_r6_coding_matrix(k, w);
+
+  printf("reed_sol_03 %d %d %d\n", k, w, seed);
+  printf("
    reed_sol_03 %d %d %d
    \n", k, w, seed);
+  printf("
    \n");
+
+  printf("Last 2 rows of the Generator Matrix:\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  data = talloc(char *, k);
+  dcopy = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, sizeof(long));
+    dcopy[i] = talloc(char, sizeof(long));
+    for (j = 0; j < sizeof(long); j++) {
+      uc = MOA_Random_W(8, 1) %256;
+      data[i][j] = (char) uc;   
+    }
+    memcpy(dcopy[i], data[i], sizeof(long));
+  }
+
+  coding = talloc(char *, m);
+  ccopy = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, sizeof(long));
+    ccopy[i] = talloc(char, sizeof(long));
+  }
+
+  reed_sol_r6_encode(k, w, data, coding, sizeof(long));
+  for (i = 0; i < m; i++) {
+    memcpy(ccopy[i], coding[i], sizeof(long));
+  }
+  
+  printf("Encoding Complete:\n\n");
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  l = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = ((unsigned int) MOA_Random_W(w, 1))%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      memcpy((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], &l, sizeof(long));
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  printf("Erased %d random devices:\n\n", m);
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+  
+  i = jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, sizeof(long));
+
+  printf("State of the system after decoding:\n\n");
+  print_data_and_coding(k, m, w, sizeof(long), data, coding);
+  
+  for (i = 0; i < k; i++) if (memcmp(data[i], dcopy[i], sizeof(long)) != 0) {
+    printf("ERROR: D%x after decoding does not match its state before decoding!
    \n", i);
+  }
+  for (i = 0; i < m; i++) if (memcmp(coding[i], ccopy[i], sizeof(long)) != 0) {
+    printf("ERROR: C%x after decoding does not match its state before decoding!
    \n", i);
+  }
+
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_04.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_04.c
new file mode 100644
index 00000000..79fae548
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_04.c
@@ -0,0 +1,118 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_04 w seed - Shows reed_sol_galois_wXX_region_multby_2\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       w must be 8, 16 or 32.  Sets up an array of 4 random words in\n");
+  fprintf(stderr, "       GF(2^w) and multiplies them by two.  \n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This demonstrates: reed_sol_galois_w08_region_multby_2()\n");
+  fprintf(stderr, "                   reed_sol_galois_w16_region_multby_2()\n");
+  fprintf(stderr, "                   reed_sol_galois_w32_region_multby_2()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+int main(int argc, char **argv)
+{
+  unsigned char *x, *y;
+  unsigned short *xs, *ys;
+  unsigned int *xi, *yi;
+  uint32_t seed;
+  int *a32, *copy;
+  int i;
+  int w;
+  
+  if (argc != 3) usage(NULL);
+  if (sscanf(argv[1], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (sscanf(argv[2], "%d", &seed) == 0) usage("Bad seed");
+
+  printf("reed_sol_04 %d %d\n", w, seed);
+  printf("
    reed_sol_04 %d %d
    \n", w, seed);
+  printf("
    \n");
+
+  MOA_Seed(seed);
+  a32 = talloc(int, 4);
+  copy = talloc(int, 4);
+  y = (unsigned char *) a32;
+  for (i = 0; i < 4*sizeof(int); i++) y[i] = MOA_Random_W(8, 1);
+  memcpy(copy, a32, sizeof(int)*4);
+
+  if (w == 8) {
+    x = (unsigned char *) copy;
+    y = (unsigned char *) a32;
+    reed_sol_galois_w08_region_multby_2((char *) a32, sizeof(int)*4);
+    for (i = 0; i < 4*sizeof(int)/sizeof(char); i++) {
+       printf("Char %2d: %3u *2 = %3u\n", i, x[i], y[i]);
+    }
+  } else if (w == 16) {
+    xs = (unsigned short *) copy;
+    ys = (unsigned short *) a32;
+    reed_sol_galois_w16_region_multby_2((char *) a32, sizeof(int)*4);
+    for (i = 0; i < 4*sizeof(int)/sizeof(short); i++) {
+       printf("Short %2d: %5u *2 = %5u\n", i, xs[i], ys[i]);
+    }
+  } else if (w == 32) {
+    xi = (unsigned int *) copy;
+    yi = (unsigned int *) a32;
+    reed_sol_galois_w16_region_multby_2((char *) a32, sizeof(int)*4);
+    for (i = 0; i < 4*sizeof(int)/sizeof(int); i++) {
+       printf("Int %2d: %10u *2 = %10u\n", i, xi[i], yi[i]);
+    }
+  } 
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_test_gf.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_test_gf.c
new file mode 100644
index 00000000..95ea54e8
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_test_gf.c
@@ -0,0 +1,189 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define BUFSIZE 4096
+
+static void *malloc16(int size) {
+    void *mem = malloc(size+16+sizeof(void*));
+    void **ptr = (void**)((long)(mem+16+sizeof(void*)) & ~(15));
+    ptr[-1] = mem;
+    return ptr;
+}
+
+static void free16(void *ptr) {
+    free(((void**)ptr)[-1]);
+}
+
+#define talloc(type, num) (type *) malloc16(sizeof(type)*(num))
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_test_gf k m w seed (additional GF args) - Tests Reed-Solomon in GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       w must be 8, 16 or 32.  k+m must be <= 2^w.\n");
+  fprintf(stderr, "       See the README for information on the additional GF args.\n");
+  fprintf(stderr, "       Set up a Vandermonde-based distribution matrix and encodes k devices of\n");
+  fprintf(stderr, "       %d bytes each with it.  Then it decodes.\n", BUFSIZE);
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This tests:        jerasure_matrix_encode()\n");
+  fprintf(stderr, "                   jerasure_matrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   galois_change_technique()\n");
+  fprintf(stderr, "                   reed_sol_vandermonde_coding_matrix()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+gf_t* get_gf(int w, int argc, char **argv, int starting)
+{
+  gf_t *gf = (gf_t*)malloc(sizeof(gf_t));
+  if (create_gf_from_argv(gf, w, argc, argv, starting) == 0) {
+    free(gf);
+    gf = NULL;
+  }
+  return gf;
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m;
+  int *matrix;
+  char **data, **coding, **old_values;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  gf_t *gf = NULL;
+  uint32_t seed;
+  
+  if (argc < 6) usage("Not enough command line arguments");  
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (w <= 16 && k + m > (1 << w)) usage("k + m is too big");
+
+  MOA_Seed(seed);
+
+  gf = get_gf(w, argc, argv, 5); 
+
+  if (gf == NULL) {
+    usage("Invalid arguments given for GF!\n");
+  }
+
+  galois_change_technique(gf, w); 
+
+  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+
+  printf("reed_sol_test_gf");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    reed_sol_test_gf");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("Last m rows of the generator matrix (G^T):\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, BUFSIZE);
+    MOA_Fill_Random_Region(data[i], BUFSIZE);
+  }
+
+  coding = talloc(char *, m);
+  old_values = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, BUFSIZE);
+    old_values[i] = talloc(char, BUFSIZE);
+  }
+
+  jerasure_matrix_encode(k, m, w, matrix, data, coding, BUFSIZE);
+  
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  l = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = ((unsigned int)MOA_Random_W(w,1))%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      memcpy(old_values[i], (erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], BUFSIZE);
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], BUFSIZE);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  i = jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, BUFSIZE);
+
+  for (i = 0; i < m; i++) {
+    if (erasures[i] < k) {
+      if (memcmp(data[erasures[i]], old_values[i], BUFSIZE)) {
+        fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
+        exit(1);
+      }
+    } else {
+      if (memcmp(coding[erasures[i]-k], old_values[i], BUFSIZE)) {
+        fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
+        exit(1);
+      }
+    }
+  }
+  
+  printf("Encoding and decoding were both successful.\n");
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/reed_sol_time_gf.c b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_time_gf.c
new file mode 100644
index 00000000..ca5923b9
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/reed_sol_time_gf.c
@@ -0,0 +1,222 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan.
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank.
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include "jerasure.h"
+#include "reed_sol.h"
+
+static void *malloc16(int size) {
+    void *mem = malloc(size+16+sizeof(void*));
+    void **ptr = (void**)((long)(mem+16+sizeof(void*)) & ~(15));
+    ptr[-1] = mem;
+    return ptr;
+}
+
+static void free16(void *ptr) {
+    free(((void**)ptr)[-1]);
+}
+
+#define talloc(type, num) (type *) malloc16(sizeof(type)*(num))
+
+void
+timer_start (double *t)
+{
+    struct timeval  tv;
+
+    gettimeofday (&tv, NULL);
+    *t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
+}
+
+double
+timer_split (const double *t)
+{
+    struct timeval  tv;
+    double  cur_t;
+
+    gettimeofday (&tv, NULL);
+    cur_t = (double)tv.tv_sec + (double)tv.tv_usec * 1e-6;
+    return (cur_t - *t);
+}
+
+usage(char *s)
+{
+  fprintf(stderr, "usage: reed_sol_time_gf k m w seed iterations bufsize (additional GF args) - Test and time Reed-Solomon in a particular GF(2^w).\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "       w must be 8, 16 or 32.  k+m must be <= 2^w.\n");
+  fprintf(stderr, "       See the README for information on the additional GF args.\n");
+  fprintf(stderr, "       Set up a Vandermonde-based distribution matrix and encodes k devices of\n");
+  fprintf(stderr, "       bufsize bytes each with it.  Then it decodes.\n");
+  fprintf(stderr, "       \n");
+  fprintf(stderr, "This tests:        jerasure_matrix_encode()\n");
+  fprintf(stderr, "                   jerasure_matrix_decode()\n");
+  fprintf(stderr, "                   jerasure_print_matrix()\n");
+  fprintf(stderr, "                   galois_change_technique()\n");
+  fprintf(stderr, "                   reed_sol_vandermonde_coding_matrix()\n");
+  if (s != NULL) fprintf(stderr, "%s\n", s);
+  exit(1);
+}
+
+gf_t* get_gf(int w, int argc, char **argv, int starting)
+{
+  gf_t *gf = (gf_t*)malloc(sizeof(gf_t));
+  if (create_gf_from_argv(gf, w, argc, argv, starting) == 0) {
+    free(gf);
+    gf = NULL;
+  }
+  return gf;
+}
+
+int main(int argc, char **argv)
+{
+  long l;
+  int k, w, i, j, m, iterations, bufsize;
+  int *matrix;
+  char **data, **coding, **old_values;
+  int *erasures, *erased;
+  int *decoding_matrix, *dm_ids;
+  uint32_t seed;
+  double t = 0, total_time = 0;
+  gf_t *gf = NULL;
+  
+  if (argc < 8) usage(NULL);  
+  if (sscanf(argv[1], "%d", &k) == 0 || k <= 0) usage("Bad k");
+  if (sscanf(argv[2], "%d", &m) == 0 || m <= 0) usage("Bad m");
+  if (sscanf(argv[3], "%d", &w) == 0 || (w != 8 && w != 16 && w != 32)) usage("Bad w");
+  if (sscanf(argv[4], "%d", &seed) == 0) usage("Bad seed");
+  if (sscanf(argv[5], "%d", &iterations) == 0) usage("Bad iterations");
+  if (sscanf(argv[6], "%d", &bufsize) == 0) usage("Bad bufsize");
+  if (w <= 16 && k + m > (1 << w)) usage("k + m is too big");
+
+  MOA_Seed(seed);
+
+  gf = get_gf(w, argc, argv, 7); 
+
+  if (gf == NULL) {
+    usage("Invalid arguments given for GF!\n");
+  }
+
+  galois_change_technique(gf, w); 
+
+  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+
+  printf("reed_sol_time_gf");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("\n");
+  printf("
    reed_sol_time_gf");
+  for (i = 1; i < argc; i++) printf(" %s", argv[i]);
+  printf("
    \n");
+  printf("
    \n");
+
+  printf("Last m rows of the generator matrix (G^T):\n\n");
+  jerasure_print_matrix(matrix, m, k, w);
+  printf("\n");
+
+  data = talloc(char *, k);
+  for (i = 0; i < k; i++) {
+    data[i] = talloc(char, bufsize);
+    MOA_Fill_Random_Region(data[i], bufsize);
+  }
+
+  coding = talloc(char *, m);
+  old_values = talloc(char *, m);
+  for (i = 0; i < m; i++) {
+    coding[i] = talloc(char, bufsize);
+    old_values[i] = talloc(char, bufsize);
+  }
+
+  for (i = 0; i < iterations; i++) {
+    timer_start(&t);
+    jerasure_matrix_encode(k, m, w, matrix, data, coding, bufsize);
+    total_time += timer_split(&t);
+  }
+
+  printf("Encode throughput for %d iterations: %.2f MB/s (%.2f sec)\n", iterations, (double)(k*iterations*bufsize/1024/1024) / total_time, total_time);
+  
+  erasures = talloc(int, (m+1));
+  erased = talloc(int, (k+m));
+  for (i = 0; i < m+k; i++) erased[i] = 0;
+  l = 0;
+  for (i = 0; i < m; ) {
+    erasures[i] = ((unsigned int)MOA_Random_W(w, 1))%(k+m);
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      memcpy(old_values[i], (erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], bufsize);
+      bzero((erasures[i] < k) ? data[erasures[i]] : coding[erasures[i]-k], bufsize);
+      i++;
+    }
+  }
+  erasures[i] = -1;
+
+  for (i = 0; i < iterations; i++) {
+    timer_start(&t);
+    jerasure_matrix_decode(k, m, w, matrix, 1, erasures, data, coding, bufsize);
+    total_time += timer_split(&t);
+  }
+  
+  printf("Decode throughput for %d iterations: %.2f MB/s (%.2f sec)\n", iterations, (double)(k*iterations*bufsize/1024/1024) / total_time, total_time);
+
+  for (i = 0; i < m; i++) {
+    if (erasures[i] < k) {
+      if (memcmp(data[erasures[i]], old_values[i], bufsize)) {
+        fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
+        exit(1);
+      }
+    } else {
+      if (memcmp(coding[erasures[i]-k], old_values[i], bufsize)) {
+        fprintf(stderr, "Decoding failed for %d!\n", erasures[i]);
+        exit(1);
+      }
+    }
+  }
+  
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure/Examples/test_all_gfs.sh b/src/erasure-code/jerasure/jerasure/Examples/test_all_gfs.sh
new file mode 100755
index 00000000..03e5e9b4
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/test_all_gfs.sh
@@ -0,0 +1,94 @@
+#
+#
+# Copyright (c) 2013, James S. Plank and Kevin Greenan
+# All rights reserved.
+#
+# Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+# Coding Techniques
+#
+# Revision 2.0: Galois Field backend now links to GF-Complete
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#  - Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  - Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+#  - Neither the name of the University of Tennessee nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+# WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+GF_COMPLETE_DIR=/usr/local/bin
+GF_METHODS=${GF_COMPLETE_DIR}/gf_methods
+k=12
+m=3
+seed=1370
+
+# Test all w=8
+${GF_METHODS} 8 -B -L | awk -F: '{ if ($1 == "w=8") print $2; }' |
+while read method; do
+  echo "Testing ${k} ${m} 8 $seed ${method}"
+  ./reed_sol_test_gf ${k} ${m} 8 $seed ${method} | tail -n 1
+  if [[ $? != "0" ]]; then
+    echo "Failed test for ${k} ${m} 8 $seed ${method}"
+    exit 1
+  fi
+done
+
+if [[ $? == "1" ]]; then
+  exit 1
+fi
+
+
+# Test all w=16
+${GF_METHODS} 16 -B -L | awk -F: '{ if ($1 == "w=16") print $2; }' |
+while read method; do
+  echo "Testing ${k} ${m} 16 $seed ${method}"
+  ./reed_sol_test_gf ${k} ${m} 16 $seed ${method} | tail -n 1
+  if [[ $? != "0" ]]; then
+    echo "Failed test for ${k} ${m} 16 $seed ${method}"
+    exit 1
+  fi
+done
+
+
+if [[ $? == "1" ]]; then
+  exit 1
+fi
+
+# Test all w=32
+${GF_METHODS} 32 -B -L | awk -F: '{ if ($1 == "w=32") print $2; }' |
+while read method; do
+  echo "Testing ${k} ${m} 32 $seed ${method}"
+  ./reed_sol_test_gf ${k} ${m} 32 $seed ${method} | tail -n 1
+  if [[ $? != "0" ]]; then
+    echo "Failed test for ${k} ${m} 32 $seed ${method}"
+    exit 1
+  fi
+done
+
+
+if [[ $? == "1" ]]; then
+  exit 1
+fi
+
+echo "Passed all tests!"
diff --git a/src/erasure-code/jerasure/jerasure/Examples/time_all_gfs_argv_init.sh b/src/erasure-code/jerasure/jerasure/Examples/time_all_gfs_argv_init.sh
new file mode 100755
index 00000000..737652a7
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Examples/time_all_gfs_argv_init.sh
@@ -0,0 +1,64 @@
+#
+#
+# Copyright (c) 2013, James S. Plank and Kevin Greenan
+# All rights reserved.
+#
+# Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+# Coding Techniques
+#
+# Revision 2.0: Galois Field backend now links to GF-Complete
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+#  - Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  - Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+#  - Neither the name of the University of Tennessee nor the names of its
+#    contributors may be used to endorse or promote products derived
+#    from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+# WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+GF_COMPLETE_DIR=/usr/local/bin
+GF_METHODS=${GF_COMPLETE_DIR}/gf_methods
+ITERATIONS=128
+BUFSIZE=65536
+k=12
+m=3
+seed=1370
+
+for w in 8 16 32 ; do 
+  ${GF_METHODS} $w -B -L | awk -F: '{ if ($1 == "w='$w'") print $2; }' |
+  while read method; do
+    echo "Testing ${k} ${m} ${w} ${seed} ${ITERATIONS} ${BUFSIZE} ${method}"
+    ./reed_sol_time_gf ${k} ${m} ${w} ${seed} ${ITERATIONS} ${BUFSIZE} ${method} | tail -n 2
+    if [[ $? != "0" ]]; then
+      echo "Failed test for ${k} ${m} ${w} ${seed} ${ITERATIONS} ${BUFSIZE} ${method}"
+      exit 1
+    fi
+  done
+
+  if [[ $? == "1" ]]; then
+    exit 1
+  fi
+done
+
+echo "Passed all tests!"
diff --git a/src/erasure-code/jerasure/jerasure/INSTALL b/src/erasure-code/jerasure/jerasure/INSTALL
new file mode 100644
index 00000000..a1e89e18
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/INSTALL
@@ -0,0 +1,370 @@
+Installation Instructions
+*************************
+
+Copyright (C) 1994-1996, 1999-2002, 2004-2011 Free Software Foundation,
+Inc.
+
+   Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.  This file is offered as-is,
+without warranty of any kind.
+
+Basic Installation
+==================
+
+   Briefly, the shell commands `./configure; make; make install' should
+configure, build, and install this package.  The following
+more-detailed instructions are generic; see the `README' file for
+instructions specific to this package.  Some packages provide this
+`INSTALL' file but do not implement all of the features documented
+below.  The lack of an optional feature in a given package is not
+necessarily a bug.  More recommendations for GNU packages can be found
+in *note Makefile Conventions: (standards)Makefile Conventions.
+
+   The `configure' shell script attempts to guess correct values for
+various system-dependent variables used during compilation.  It uses
+those values to create a `Makefile' in each directory of the package.
+It may also create one or more `.h' files containing system-dependent
+definitions.  Finally, it creates a shell script `config.status' that
+you can run in the future to recreate the current configuration, and a
+file `config.log' containing compiler output (useful mainly for
+debugging `configure').
+
+   It can also use an optional file (typically called `config.cache'
+and enabled with `--cache-file=config.cache' or simply `-C') that saves
+the results of its tests to speed up reconfiguring.  Caching is
+disabled by default to prevent problems with accidental use of stale
+cache files.
+
+   If you need to do unusual things to compile the package, please try
+to figure out how `configure' could check whether to do them, and mail
+diffs or instructions to the address given in the `README' so they can
+be considered for the next release.  If you are using the cache, and at
+some point `config.cache' contains results you don't want to keep, you
+may remove or edit it.
+
+   The file `configure.ac' (or `configure.in') is used to create
+`configure' by a program called `autoconf'.  You need `configure.ac' if
+you want to change it or regenerate `configure' using a newer version
+of `autoconf'.
+
+   The simplest way to compile this package is:
+
+  1. `cd' to the directory containing the package's source code and type
+     `./configure' to configure the package for your system.
+
+     Running `configure' might take a while.  While running, it prints
+     some messages telling which features it is checking for.
+
+  2. Type `make' to compile the package.
+
+  3. Optionally, type `make check' to run any self-tests that come with
+     the package, generally using the just-built uninstalled binaries.
+
+  4. Type `make install' to install the programs and any data files and
+     documentation.  When installing into a prefix owned by root, it is
+     recommended that the package be configured and built as a regular
+     user, and only the `make install' phase executed with root
+     privileges.
+
+  5. Optionally, type `make installcheck' to repeat any self-tests, but
+     this time using the binaries in their final installed location.
+     This target does not install anything.  Running this target as a
+     regular user, particularly if the prior `make install' required
+     root privileges, verifies that the installation completed
+     correctly.
+
+  6. You can remove the program binaries and object files from the
+     source code directory by typing `make clean'.  To also remove the
+     files that `configure' created (so you can compile the package for
+     a different kind of computer), type `make distclean'.  There is
+     also a `make maintainer-clean' target, but that is intended mainly
+     for the package's developers.  If you use it, you may have to get
+     all sorts of other programs in order to regenerate files that came
+     with the distribution.
+
+  7. Often, you can also type `make uninstall' to remove the installed
+     files again.  In practice, not all packages have tested that
+     uninstallation works correctly, even though it is required by the
+     GNU Coding Standards.
+
+  8. Some packages, particularly those that use Automake, provide `make
+     distcheck', which can by used by developers to test that all other
+     targets like `make install' and `make uninstall' work correctly.
+     This target is generally not run by end users.
+
+Compilers and Options
+=====================
+
+   Some systems require unusual options for compilation or linking that
+the `configure' script does not know about.  Run `./configure --help'
+for details on some of the pertinent environment variables.
+
+   You can give `configure' initial values for configuration parameters
+by setting variables in the command line or in the environment.  Here
+is an example:
+
+     ./configure CC=c99 CFLAGS=-g LIBS=-lposix
+
+   *Note Defining Variables::, for more details.
+
+Compiling For Multiple Architectures
+====================================
+
+   You can compile the package for more than one kind of computer at the
+same time, by placing the object files for each architecture in their
+own directory.  To do this, you can use GNU `make'.  `cd' to the
+directory where you want the object files and executables to go and run
+the `configure' script.  `configure' automatically checks for the
+source code in the directory that `configure' is in and in `..'.  This
+is known as a "VPATH" build.
+
+   With a non-GNU `make', it is safer to compile the package for one
+architecture at a time in the source code directory.  After you have
+installed the package for one architecture, use `make distclean' before
+reconfiguring for another architecture.
+
+   On MacOS X 10.5 and later systems, you can create libraries and
+executables that work on multiple system types--known as "fat" or
+"universal" binaries--by specifying multiple `-arch' options to the
+compiler but only a single `-arch' option to the preprocessor.  Like
+this:
+
+     ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+                 CPP="gcc -E" CXXCPP="g++ -E"
+
+   This is not guaranteed to produce working output in all cases, you
+may have to build one architecture at a time and combine the results
+using the `lipo' tool if you have problems.
+
+Installation Names
+==================
+
+   By default, `make install' installs the package's commands under
+`/usr/local/bin', include files under `/usr/local/include', etc.  You
+can specify an installation prefix other than `/usr/local' by giving
+`configure' the option `--prefix=PREFIX', where PREFIX must be an
+absolute file name.
+
+   You can specify separate installation prefixes for
+architecture-specific files and architecture-independent files.  If you
+pass the option `--exec-prefix=PREFIX' to `configure', the package uses
+PREFIX as the prefix for installing programs and libraries.
+Documentation and other data files still use the regular prefix.
+
+   In addition, if you use an unusual directory layout you can give
+options like `--bindir=DIR' to specify different values for particular
+kinds of files.  Run `configure --help' for a list of the directories
+you can set and what kinds of files go in them.  In general, the
+default for these options is expressed in terms of `${prefix}', so that
+specifying just `--prefix' will affect all of the other directory
+specifications that were not explicitly provided.
+
+   The most portable way to affect installation locations is to pass the
+correct locations to `configure'; however, many packages provide one or
+both of the following shortcuts of passing variable assignments to the
+`make install' command line to change installation locations without
+having to reconfigure or recompile.
+
+   The first method involves providing an override variable for each
+affected directory.  For example, `make install
+prefix=/alternate/directory' will choose an alternate location for all
+directory configuration variables that were expressed in terms of
+`${prefix}'.  Any directories that were specified during `configure',
+but not in terms of `${prefix}', must each be overridden at install
+time for the entire installation to be relocated.  The approach of
+makefile variable overrides for each directory variable is required by
+the GNU Coding Standards, and ideally causes no recompilation.
+However, some platforms have known limitations with the semantics of
+shared libraries that end up requiring recompilation when using this
+method, particularly noticeable in packages that use GNU Libtool.
+
+   The second method involves providing the `DESTDIR' variable.  For
+example, `make install DESTDIR=/alternate/directory' will prepend
+`/alternate/directory' before all installation names.  The approach of
+`DESTDIR' overrides is not required by the GNU Coding Standards, and
+does not work on platforms that have drive letters.  On the other hand,
+it does better at avoiding recompilation issues, and works well even
+when some directory options were not specified in terms of `${prefix}'
+at `configure' time.
+
+Optional Features
+=================
+
+   If the package supports it, you can cause programs to be installed
+with an extra prefix or suffix on their names by giving `configure' the
+option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'.
+
+   Some packages pay attention to `--enable-FEATURE' options to
+`configure', where FEATURE indicates an optional part of the package.
+They may also pay attention to `--with-PACKAGE' options, where PACKAGE
+is something like `gnu-as' or `x' (for the X Window System).  The
+`README' should mention any `--enable-' and `--with-' options that the
+package recognizes.
+
+   For packages that use the X Window System, `configure' can usually
+find the X include and library files automatically, but if it doesn't,
+you can use the `configure' options `--x-includes=DIR' and
+`--x-libraries=DIR' to specify their locations.
+
+   Some packages offer the ability to configure how verbose the
+execution of `make' will be.  For these packages, running `./configure
+--enable-silent-rules' sets the default to minimal output, which can be
+overridden with `make V=1'; while running `./configure
+--disable-silent-rules' sets the default to verbose, which can be
+overridden with `make V=0'.
+
+Particular systems
+==================
+
+   On HP-UX, the default C compiler is not ANSI C compatible.  If GNU
+CC is not installed, it is recommended to use the following options in
+order to use an ANSI C compiler:
+
+     ./configure CC="cc -Ae -D_XOPEN_SOURCE=500"
+
+and if that doesn't work, install pre-built binaries of GCC for HP-UX.
+
+   HP-UX `make' updates targets which have the same time stamps as
+their prerequisites, which makes it generally unusable when shipped
+generated files such as `configure' are involved.  Use GNU `make'
+instead.
+
+   On OSF/1 a.k.a. Tru64, some versions of the default C compiler cannot
+parse its `' header file.  The option `-nodtk' can be used as
+a workaround.  If GNU CC is not installed, it is therefore recommended
+to try
+
+     ./configure CC="cc"
+
+and if that doesn't work, try
+
+     ./configure CC="cc -nodtk"
+
+   On Solaris, don't put `/usr/ucb' early in your `PATH'.  This
+directory contains several dysfunctional programs; working variants of
+these programs are available in `/usr/bin'.  So, if you need `/usr/ucb'
+in your `PATH', put it _after_ `/usr/bin'.
+
+   On Haiku, software installed for all users goes in `/boot/common',
+not `/usr/local'.  It is recommended to use the following options:
+
+     ./configure --prefix=/boot/common
+
+Specifying the System Type
+==========================
+
+   There may be some features `configure' cannot figure out
+automatically, but needs to determine by the type of machine the package
+will run on.  Usually, assuming the package is built to be run on the
+_same_ architectures, `configure' can figure that out, but if it prints
+a message saying it cannot guess the machine type, give it the
+`--build=TYPE' option.  TYPE can either be a short name for the system
+type, such as `sun4', or a canonical name which has the form:
+
+     CPU-COMPANY-SYSTEM
+
+where SYSTEM can have one of these forms:
+
+     OS
+     KERNEL-OS
+
+   See the file `config.sub' for the possible values of each field.  If
+`config.sub' isn't included in this package, then this package doesn't
+need to know the machine type.
+
+   If you are _building_ compiler tools for cross-compiling, you should
+use the option `--target=TYPE' to select the type of system they will
+produce code for.
+
+   If you want to _use_ a cross compiler, that generates code for a
+platform different from the build platform, you should specify the
+"host" platform (i.e., that on which the generated programs will
+eventually be run) with `--host=TYPE'.
+
+Sharing Defaults
+================
+
+   If you want to set default values for `configure' scripts to share,
+you can create a site shell script called `config.site' that gives
+default values for variables like `CC', `cache_file', and `prefix'.
+`configure' looks for `PREFIX/share/config.site' if it exists, then
+`PREFIX/etc/config.site' if it exists.  Or, you can set the
+`CONFIG_SITE' environment variable to the location of the site script.
+A warning: not all `configure' scripts look for a site script.
+
+Defining Variables
+==================
+
+   Variables not defined in a site shell script can be set in the
+environment passed to `configure'.  However, some packages may run
+configure again during the build, and the customized values of these
+variables may be lost.  In order to avoid this problem, you should set
+them in the `configure' command line, using `VAR=value'.  For example:
+
+     ./configure CC=/usr/local2/bin/gcc
+
+causes the specified `gcc' to be used as the C compiler (unless it is
+overridden in the site shell script).
+
+Unfortunately, this technique does not work for `CONFIG_SHELL' due to
+an Autoconf bug.  Until the bug is fixed you can use this workaround:
+
+     CONFIG_SHELL=/bin/bash /bin/bash ./configure CONFIG_SHELL=/bin/bash
+
+`configure' Invocation
+======================
+
+   `configure' recognizes the following options to control how it
+operates.
+
+`--help'
+`-h'
+     Print a summary of all of the options to `configure', and exit.
+
+`--help=short'
+`--help=recursive'
+     Print a summary of the options unique to this package's
+     `configure', and exit.  The `short' variant lists options used
+     only in the top level, while the `recursive' variant lists options
+     also present in any nested packages.
+
+`--version'
+`-V'
+     Print the version of Autoconf used to generate the `configure'
+     script, and exit.
+
+`--cache-file=FILE'
+     Enable the cache: use and save the results of the tests in FILE,
+     traditionally `config.cache'.  FILE defaults to `/dev/null' to
+     disable caching.
+
+`--config-cache'
+`-C'
+     Alias for `--cache-file=config.cache'.
+
+`--quiet'
+`--silent'
+`-q'
+     Do not print messages saying which checks are being made.  To
+     suppress all normal output, redirect it to `/dev/null' (any error
+     messages will still be shown).
+
+`--srcdir=DIR'
+     Look for the package's source code in directory DIR.  Usually
+     `configure' can determine that directory automatically.
+
+`--prefix=DIR'
+     Use DIR as the installation prefix.  *note Installation Names::
+     for more details, including other options available for fine-tuning
+     the installation locations.
+
+`--no-create'
+`-n'
+     Run the configure checks, but stop before creating any output
+     files.
+
+`configure' also accepts some other, not widely useful, options.  Run
+`configure --help' for more details.
+
diff --git a/src/erasure-code/jerasure/jerasure/License.txt b/src/erasure-code/jerasure/jerasure/License.txt
new file mode 100644
index 00000000..20ffbd2d
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/License.txt
@@ -0,0 +1,37 @@
+
+Copyright (c) 2013, James S. Plank and Kevin Greenan
+All rights reserved.
+
+Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure Coding Techniques
+
+Revision 2.0: Galois Field backend now links to GF-Complete
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+ - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+
+ - Neither the name of the University of Tennessee nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/src/erasure-code/jerasure/jerasure/Makefile.am b/src/erasure-code/jerasure/jerasure/Makefile.am
new file mode 100644
index 00000000..2ff83af6
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Makefile.am
@@ -0,0 +1,6 @@
+# Jerasure AM file
+
+SUBDIRS = src Examples
+
+ACLOCAL_AMFLAGS = -I m4
+
diff --git a/src/erasure-code/jerasure/jerasure/Makefile.in b/src/erasure-code/jerasure/jerasure/Makefile.in
new file mode 100644
index 00000000..a98918e8
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/Makefile.in
@@ -0,0 +1,745 @@
+# Makefile.in generated by automake 1.11.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Jerasure AM file
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = .
+DIST_COMMON = README $(am__configure_deps) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in $(top_srcdir)/configure \
+	$(top_srcdir)/include/config.h.in AUTHORS COPYING ChangeLog \
+	INSTALL NEWS config.guess config.sub install-sh ltmain.sh \
+	missing
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/m4/ax_ext.m4 \
+	$(top_srcdir)/m4/ax_gcc_x86_avx_xgetbv.m4 \
+	$(top_srcdir)/m4/ax_gcc_x86_cpuid.m4 \
+	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \
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+	  && $(MAKE) $(AM_MAKEFLAGS) install \
+	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	  && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	  && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+	        distuninstallcheck \
+	  && chmod -R a-w "$$dc_install_base" \
+	  && ({ \
+	       (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+	            distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+	      } || { rm -rf "$$dc_destdir"; exit 1; }) \
+	  && rm -rf "$$dc_destdir" \
+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
+	  && rm -rf $(DIST_ARCHIVES) \
+	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
+	  && cd "$$am__cwd" \
+	  || exit 1
+	$(am__remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
+	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
+distuninstallcheck:
+	@test -n '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
+	   || { echo "ERROR: files left after uninstall:" ; \
+	        if test -n "$(DESTDIR)"; then \
+	          echo "  (check DESTDIR support)"; \
+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+	  || { echo "ERROR: files left in build directory after distclean:" ; \
+	       $(distcleancheck_listfiles) ; \
+	       exit 1; } >&2
+check-am: all-am
+check: check-recursive
+all-am: Makefile
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info: info-recursive
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) ctags-recursive \
+	install-am install-strip tags-recursive
+
+.PHONY: $(RECURSIVE_CLEAN_TARGETS) $(RECURSIVE_TARGETS) CTAGS GTAGS \
+	all all-am am--refresh check check-am clean clean-generic \
+	clean-libtool ctags ctags-recursive dist dist-all dist-bzip2 \
+	dist-gzip dist-lzip dist-lzma dist-shar dist-tarZ dist-xz \
+	dist-zip distcheck distclean distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags distcleancheck distdir \
+	distuninstallcheck dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
+	ps ps-am tags tags-recursive uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/erasure-code/jerasure/jerasure/Manual.pdf b/src/erasure-code/jerasure/jerasure/Manual.pdf
new file mode 100644
index 00000000..e596023e
Binary files /dev/null and b/src/erasure-code/jerasure/jerasure/Manual.pdf differ
diff --git a/src/erasure-code/jerasure/jerasure/NEWS b/src/erasure-code/jerasure/jerasure/NEWS
new file mode 100644
index 00000000..e69de29b
diff --git a/src/erasure-code/jerasure/jerasure/PERF.txt b/src/erasure-code/jerasure/jerasure/PERF.txt
new file mode 100644
index 00000000..ee27826e
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/PERF.txt
@@ -0,0 +1,243 @@
+This reflects time_all_gfs_argv_init.sh run on a MacBook Air with 4 GB of memory and a 1.7 GHz Intel Core i5
+
+#uname -a 
+11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64
+
+ 
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diff --git a/src/erasure-code/jerasure/jerasure/README b/src/erasure-code/jerasure/jerasure/README
new file mode 100644
index 00000000..1d901515
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/README
@@ -0,0 +1,62 @@
+This is revision 2.0 of Jerasure.  This is pretty much Jerasure 1.2 without the
+original Galois Field backend.  Version 2.0 links directly to GF-Complete, which 
+is more flexible than the original, and *much* faster, because it leverages SIMD
+instructions.
+Authors: James S. Plank (University of Tennessee)
+         Kevin M. Greenan (Box)
+
+------------------------------------------------------------
+
+External Documentation:
+
+See the file Manual.pdf for the programmer's manual and tutorial.  This manual
+is also available at http://web.eecs.utk.edu/~plank/plank/papers/UT-EECS-14-721.html.
+
+See https://bitbucket.org/jimplank/gf-complete for GF-Complete.
+
+NOTE: You must have GF-Complete installed (or compiled) in order to use Jerasure 2.0.
+
+There are two directories of source code:
+
+The src directory contains the jerasure code.
+The Examples directory contains the example programs.  
+
+------------------------------------------------------------
+
+The makefile assumes that Examples is a subdirectory of the home directory.
+
+Installing if you are allowed to install GF-Complete on your machine:
+
+1.) Install GF-Complete
+2.) ./configure
+3.) make
+4.) sudo make install 
+
+This will install the library into your machine's lib directory,
+the headers into include, and the example programs into bin.
+
+------------------------------------------------------------
+
+Installing if you can compile GF-Complete, but you cannot install it:
+
+1.) Install GF-Complete.  Let's suppose the full path to GF-Complete is
+    in the environment variable  GFP
+2A.) On Linux, set the environment variable LD_LIBRARY_PATH so that it 
+     includes $GFP/src/.libs
+2B.) On a mac, set the environment variable DYLD_LIBRARY_PATH so that it
+     includes $GFP/src/.libs
+2.) ./configure LDFLAGS=-L$GFP/src/.libs/ CPPFLAGS=-I$GFP/include
+3.) make
+
+The examples will be in the directory Examples.  The include files will
+be in the directory include, and the library will be called libJerasure.a
+in the directory src/.libs.
+
+------------------------------------------------------------
+
+As long as GF-Complete is installed, Jerasure 2.0 can be used just as previous
+versions.  There is no need to define custom Galois Fields.  Jerasure will 
+determine the default field to use, if one is not specified.
+
+If you would like to explore a using a different Galois Field implementation,
+please see the manual.
diff --git a/src/erasure-code/jerasure/jerasure/README.nd b/src/erasure-code/jerasure/jerasure/README.nd
new file mode 100644
index 00000000..1d901515
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/README.nd
@@ -0,0 +1,62 @@
+This is revision 2.0 of Jerasure.  This is pretty much Jerasure 1.2 without the
+original Galois Field backend.  Version 2.0 links directly to GF-Complete, which 
+is more flexible than the original, and *much* faster, because it leverages SIMD
+instructions.
+Authors: James S. Plank (University of Tennessee)
+         Kevin M. Greenan (Box)
+
+------------------------------------------------------------
+
+External Documentation:
+
+See the file Manual.pdf for the programmer's manual and tutorial.  This manual
+is also available at http://web.eecs.utk.edu/~plank/plank/papers/UT-EECS-14-721.html.
+
+See https://bitbucket.org/jimplank/gf-complete for GF-Complete.
+
+NOTE: You must have GF-Complete installed (or compiled) in order to use Jerasure 2.0.
+
+There are two directories of source code:
+
+The src directory contains the jerasure code.
+The Examples directory contains the example programs.  
+
+------------------------------------------------------------
+
+The makefile assumes that Examples is a subdirectory of the home directory.
+
+Installing if you are allowed to install GF-Complete on your machine:
+
+1.) Install GF-Complete
+2.) ./configure
+3.) make
+4.) sudo make install 
+
+This will install the library into your machine's lib directory,
+the headers into include, and the example programs into bin.
+
+------------------------------------------------------------
+
+Installing if you can compile GF-Complete, but you cannot install it:
+
+1.) Install GF-Complete.  Let's suppose the full path to GF-Complete is
+    in the environment variable  GFP
+2A.) On Linux, set the environment variable LD_LIBRARY_PATH so that it 
+     includes $GFP/src/.libs
+2B.) On a mac, set the environment variable DYLD_LIBRARY_PATH so that it
+     includes $GFP/src/.libs
+2.) ./configure LDFLAGS=-L$GFP/src/.libs/ CPPFLAGS=-I$GFP/include
+3.) make
+
+The examples will be in the directory Examples.  The include files will
+be in the directory include, and the library will be called libJerasure.a
+in the directory src/.libs.
+
+------------------------------------------------------------
+
+As long as GF-Complete is installed, Jerasure 2.0 can be used just as previous
+versions.  There is no need to define custom Galois Fields.  Jerasure will 
+determine the default field to use, if one is not specified.
+
+If you would like to explore a using a different Galois Field implementation,
+please see the manual.
diff --git a/src/erasure-code/jerasure/jerasure/README.txt b/src/erasure-code/jerasure/jerasure/README.txt
new file mode 100644
index 00000000..1d901515
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/README.txt
@@ -0,0 +1,62 @@
+This is revision 2.0 of Jerasure.  This is pretty much Jerasure 1.2 without the
+original Galois Field backend.  Version 2.0 links directly to GF-Complete, which 
+is more flexible than the original, and *much* faster, because it leverages SIMD
+instructions.
+Authors: James S. Plank (University of Tennessee)
+         Kevin M. Greenan (Box)
+
+------------------------------------------------------------
+
+External Documentation:
+
+See the file Manual.pdf for the programmer's manual and tutorial.  This manual
+is also available at http://web.eecs.utk.edu/~plank/plank/papers/UT-EECS-14-721.html.
+
+See https://bitbucket.org/jimplank/gf-complete for GF-Complete.
+
+NOTE: You must have GF-Complete installed (or compiled) in order to use Jerasure 2.0.
+
+There are two directories of source code:
+
+The src directory contains the jerasure code.
+The Examples directory contains the example programs.  
+
+------------------------------------------------------------
+
+The makefile assumes that Examples is a subdirectory of the home directory.
+
+Installing if you are allowed to install GF-Complete on your machine:
+
+1.) Install GF-Complete
+2.) ./configure
+3.) make
+4.) sudo make install 
+
+This will install the library into your machine's lib directory,
+the headers into include, and the example programs into bin.
+
+------------------------------------------------------------
+
+Installing if you can compile GF-Complete, but you cannot install it:
+
+1.) Install GF-Complete.  Let's suppose the full path to GF-Complete is
+    in the environment variable  GFP
+2A.) On Linux, set the environment variable LD_LIBRARY_PATH so that it 
+     includes $GFP/src/.libs
+2B.) On a mac, set the environment variable DYLD_LIBRARY_PATH so that it
+     includes $GFP/src/.libs
+2.) ./configure LDFLAGS=-L$GFP/src/.libs/ CPPFLAGS=-I$GFP/include
+3.) make
+
+The examples will be in the directory Examples.  The include files will
+be in the directory include, and the library will be called libJerasure.a
+in the directory src/.libs.
+
+------------------------------------------------------------
+
+As long as GF-Complete is installed, Jerasure 2.0 can be used just as previous
+versions.  There is no need to define custom Galois Fields.  Jerasure will 
+determine the default field to use, if one is not specified.
+
+If you would like to explore a using a different Galois Field implementation,
+please see the manual.
diff --git a/src/erasure-code/jerasure/jerasure/aclocal.m4 b/src/erasure-code/jerasure/jerasure/aclocal.m4
new file mode 100644
index 00000000..6e4e5f1f
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/aclocal.m4
@@ -0,0 +1,662 @@
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+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
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+    CYGPATH_W=echo
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+fi
+AC_SUBST([CYGPATH_W])
+
+# Define the identity of the package.
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+ AC_SUBST([PACKAGE], [$1])dnl
+ AC_SUBST([VERSION], [$2])],
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+dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
+m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
+  [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
+ AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+ AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
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+_AM_IF_OPTION([no-define],,
+[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
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+AM_MISSING_PROG(AUTOHEADER, autoheader)
+AM_MISSING_PROG(MAKEINFO, makeinfo)
+AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
+AC_REQUIRE([AM_PROG_MKDIR_P])dnl
+# We need awk for the "check" target.  The system "awk" is bad on
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+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+_AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
+	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
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+_AM_IF_OPTION([no-dependencies],,
+[AC_PROVIDE_IFELSE([AC_PROG_CC],
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+AC_PROVIDE_IFELSE([AC_PROG_CXX],
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+AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+		  [_AM_DEPENDENCIES(OBJC)],
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+])
+_AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
+dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
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+[m4_provide_if([_AM_COMPILER_EXEEXT],
+  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+])
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+dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
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+dnl mangled by Autoconf and run in a shell conditional statement.
+m4_define([_AC_COMPILER_EXEEXT],
+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated.  The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001, 2003, 2005, 2008, 2011 Free Software Foundation,
+# Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+AC_SUBST(install_sh)])
+
+# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 6
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it supports --run.
+# If it does, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+  am_missing_run="$MISSING --run "
+else
+  am_missing_run=
+  AC_MSG_WARN([`missing' script is too old or missing])
+fi
+])
+
+# Copyright (C) 2003, 2004, 2005, 2006, 2011 Free Software Foundation,
+# Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# AM_PROG_MKDIR_P
+# ---------------
+# Check for `mkdir -p'.
+AC_DEFUN([AM_PROG_MKDIR_P],
+[AC_PREREQ([2.60])dnl
+AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+dnl Automake 1.8 to 1.9.6 used to define mkdir_p.  We now use MKDIR_P,
+dnl while keeping a definition of mkdir_p for backward compatibility.
+dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+dnl Makefile.ins that do not define MKDIR_P, so we do our own
+dnl adjustment using top_builddir (which is defined more often than
+dnl MKDIR_P).
+AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+case $mkdir_p in
+  [[\\/$]]* | ?:[[\\/]]*) ;;
+  */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001, 2002, 2003, 2005, 2008, 2010 Free Software
+# Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# --------------------
+# Set option NAME.  Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+# Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 5
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+   if test "$[*]" = "X"; then
+      # -L didn't work.
+      set X `ls -t "$srcdir/configure" conftest.file`
+   fi
+   rm -f conftest.file
+   if test "$[*]" != "X $srcdir/configure conftest.file" \
+      && test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+alias in your environment])
+   fi
+
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT(yes)])
+
+# Copyright (C) 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor `install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in `make install-strip', and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'.  However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be `maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006, 2008, 2010 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 3
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# --------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004, 2005, 2012 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 2
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of `v7', `ustar', or `pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AC_SUBST([AMTAR], ['$${TAR-tar}'])
+m4_if([$1], [v7],
+     [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+     [m4_case([$1], [ustar],, [pax],,
+              [m4_fatal([Unknown tar format])])
+AC_MSG_CHECKING([how to create a $1 tar archive])
+# Loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+_am_tools=${am_cv_prog_tar_$1-$_am_tools}
+# Do not fold the above two line into one, because Tru64 sh and
+# Solaris sh will not grok spaces in the rhs of `-'.
+for _am_tool in $_am_tools
+do
+  case $_am_tool in
+  gnutar)
+    for _am_tar in tar gnutar gtar;
+    do
+      AM_RUN_LOG([$_am_tar --version]) && break
+    done
+    am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+    am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+    am__untar="$_am_tar -xf -"
+    ;;
+  plaintar)
+    # Must skip GNU tar: if it does not support --format= it doesn't create
+    # ustar tarball either.
+    (tar --version) >/dev/null 2>&1 && continue
+    am__tar='tar chf - "$$tardir"'
+    am__tar_='tar chf - "$tardir"'
+    am__untar='tar xf -'
+    ;;
+  pax)
+    am__tar='pax -L -x $1 -w "$$tardir"'
+    am__tar_='pax -L -x $1 -w "$tardir"'
+    am__untar='pax -r'
+    ;;
+  cpio)
+    am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+    am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+    am__untar='cpio -i -H $1 -d'
+    ;;
+  none)
+    am__tar=false
+    am__tar_=false
+    am__untar=false
+    ;;
+  esac
+
+  # If the value was cached, stop now.  We just wanted to have am__tar
+  # and am__untar set.
+  test -n "${am_cv_prog_tar_$1}" && break
+
+  # tar/untar a dummy directory, and stop if the command works
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  echo GrepMe > conftest.dir/file
+  AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+  rm -rf conftest.dir
+  if test -s conftest.tar; then
+    AM_RUN_LOG([$am__untar /dev/null 2>&1 && break
+  fi
+done
+rm -rf conftest.dir
+
+AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
+m4_include([m4/ax_check_compile_flag.m4])
+m4_include([m4/ax_ext.m4])
+m4_include([m4/ax_gcc_x86_avx_xgetbv.m4])
+m4_include([m4/ax_gcc_x86_cpuid.m4])
+m4_include([m4/libtool.m4])
+m4_include([m4/ltoptions.m4])
+m4_include([m4/ltsugar.m4])
+m4_include([m4/ltversion.m4])
+m4_include([m4/lt~obsolete.m4])
diff --git a/src/erasure-code/jerasure/jerasure/autogen.sh b/src/erasure-code/jerasure/jerasure/autogen.sh
new file mode 100755
index 00000000..b483139f
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/autogen.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+autoreconf --force --install -I m4
diff --git a/src/erasure-code/jerasure/jerasure/config.guess b/src/erasure-code/jerasure/jerasure/config.guess
new file mode 100755
index 00000000..d622a44e
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/config.guess
@@ -0,0 +1,1530 @@
+#! /bin/sh
+# Attempt to guess a canonical system name.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012 Free Software Foundation, Inc.
+
+timestamp='2012-02-10'
+
+# This file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see .
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Originally written by Per Bothner.  Please send patches (context
+# diff format) to  and include a ChangeLog
+# entry.
+#
+# This script attempts to guess a canonical system name similar to
+# config.sub.  If it succeeds, it prints the system name on stdout, and
+# exits with 0.  Otherwise, it exits with 1.
+#
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION]
+
+Output the configuration name of the system \`$me' is run on.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to ."
+
+version="\
+GNU config.guess ($timestamp)
+
+Originally written by Per Bothner.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help" >&2
+       exit 1 ;;
+    * )
+       break ;;
+  esac
+done
+
+if test $# != 0; then
+  echo "$me: too many arguments$help" >&2
+  exit 1
+fi
+
+trap 'exit 1' 1 2 15
+
+# CC_FOR_BUILD -- compiler used by this script. Note that the use of a
+# compiler to aid in system detection is discouraged as it requires
+# temporary files to be created and, as you can see below, it is a
+# headache to deal with in a portable fashion.
+
+# Historically, `CC_FOR_BUILD' used to be named `HOST_CC'. We still
+# use `HOST_CC' if defined, but it is deprecated.
+
+# Portable tmp directory creation inspired by the Autoconf team.
+
+set_cc_for_build='
+trap "exitcode=\$?; (rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null) && exit \$exitcode" 0 ;
+trap "rm -f \$tmpfiles 2>/dev/null; rmdir \$tmp 2>/dev/null; exit 1" 1 2 13 15 ;
+: ${TMPDIR=/tmp} ;
+ { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n "$tmp" && test -d "$tmp" ; } ||
+ { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir $tmp) ; } ||
+ { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir $tmp) && echo "Warning: creating insecure temp directory" >&2 ; } ||
+ { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 1 ; } ;
+dummy=$tmp/dummy ;
+tmpfiles="$dummy.c $dummy.o $dummy.rel $dummy" ;
+case $CC_FOR_BUILD,$HOST_CC,$CC in
+ ,,)    echo "int x;" > $dummy.c ;
+	for c in cc gcc c89 c99 ; do
+	  if ($c -c -o $dummy.o $dummy.c) >/dev/null 2>&1 ; then
+	     CC_FOR_BUILD="$c"; break ;
+	  fi ;
+	done ;
+	if test x"$CC_FOR_BUILD" = x ; then
+	  CC_FOR_BUILD=no_compiler_found ;
+	fi
+	;;
+ ,,*)   CC_FOR_BUILD=$CC ;;
+ ,*,*)  CC_FOR_BUILD=$HOST_CC ;;
+esac ; set_cc_for_build= ;'
+
+# This is needed to find uname on a Pyramid OSx when run in the BSD universe.
+# (ghazi@noc.rutgers.edu 1994-08-24)
+if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
+	PATH=$PATH:/.attbin ; export PATH
+fi
+
+UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
+UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
+UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
+UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+
+# Note: order is significant - the case branches are not exclusive.
+
+case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
+    *:NetBSD:*:*)
+	# NetBSD (nbsd) targets should (where applicable) match one or
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
+	# switched to ELF, *-*-netbsd* would select the old
+	# object file format.  This provides both forward
+	# compatibility and a consistent mechanism for selecting the
+	# object file format.
+	#
+	# Note: NetBSD doesn't particularly care about the vendor
+	# portion of the name.  We always set it to "unknown".
+	sysctl="sysctl -n hw.machine_arch"
+	UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
+	    /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
+	case "${UNAME_MACHINE_ARCH}" in
+	    armeb) machine=armeb-unknown ;;
+	    arm*) machine=arm-unknown ;;
+	    sh3el) machine=shl-unknown ;;
+	    sh3eb) machine=sh-unknown ;;
+	    sh5el) machine=sh5le-unknown ;;
+	    *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
+	esac
+	# The Operating System including object format, if it has switched
+	# to ELF recently, or will in the future.
+	case "${UNAME_MACHINE_ARCH}" in
+	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
+		eval $set_cc_for_build
+		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
+			| grep -q __ELF__
+		then
+		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
+		    # Return netbsd for either.  FIX?
+		    os=netbsd
+		else
+		    os=netbsdelf
+		fi
+		;;
+	    *)
+		os=netbsd
+		;;
+	esac
+	# The OS release
+	# Debian GNU/NetBSD machines have a different userland, and
+	# thus, need a distinct triplet. However, they do not need
+	# kernel version information, so it can be replaced with a
+	# suitable tag, in the style of linux-gnu.
+	case "${UNAME_VERSION}" in
+	    Debian*)
+		release='-gnu'
+		;;
+	    *)
+		release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
+		;;
+	esac
+	# Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
+	# contains redundant information, the shorter form:
+	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
+	echo "${machine}-${os}${release}"
+	exit ;;
+    *:OpenBSD:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
+	exit ;;
+    *:ekkoBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
+	exit ;;
+    *:SolidBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
+	exit ;;
+    macppc:MirBSD:*:*)
+	echo powerpc-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    *:MirBSD:*:*)
+	echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
+	exit ;;
+    alpha:OSF1:*:*)
+	case $UNAME_RELEASE in
+	*4.0)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+		;;
+	*5.*)
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		;;
+	esac
+	# According to Compaq, /usr/sbin/psrinfo has been available on
+	# OSF/1 and Tru64 systems produced since 1995.  I hope that
+	# covers most systems running today.  This code pipes the CPU
+	# types through head -n 1, so we only detect the type of CPU 0.
+	ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) processor.*$/\1/p' | head -n 1`
+	case "$ALPHA_CPU_TYPE" in
+	    "EV4 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV4.5 (21064)")
+		UNAME_MACHINE="alpha" ;;
+	    "LCA4 (21066/21068)")
+		UNAME_MACHINE="alpha" ;;
+	    "EV5 (21164)")
+		UNAME_MACHINE="alphaev5" ;;
+	    "EV5.6 (21164A)")
+		UNAME_MACHINE="alphaev56" ;;
+	    "EV5.6 (21164PC)")
+		UNAME_MACHINE="alphapca56" ;;
+	    "EV5.7 (21164PC)")
+		UNAME_MACHINE="alphapca57" ;;
+	    "EV6 (21264)")
+		UNAME_MACHINE="alphaev6" ;;
+	    "EV6.7 (21264A)")
+		UNAME_MACHINE="alphaev67" ;;
+	    "EV6.8CB (21264C)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8AL (21264B)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.8CX (21264D)")
+		UNAME_MACHINE="alphaev68" ;;
+	    "EV6.9A (21264/EV69A)")
+		UNAME_MACHINE="alphaev69" ;;
+	    "EV7 (21364)")
+		UNAME_MACHINE="alphaev7" ;;
+	    "EV7.9 (21364A)")
+		UNAME_MACHINE="alphaev79" ;;
+	esac
+	# A Pn.n version is a patched version.
+	# A Vn.n version is a released version.
+	# A Tn.n version is a released field test version.
+	# A Xn.n version is an unreleased experimental baselevel.
+	# 1.2 uses "1.2" for uname -r.
+	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
+    Alpha\ *:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# Should we change UNAME_MACHINE based on the output of uname instead
+	# of the specific Alpha model?
+	echo alpha-pc-interix
+	exit ;;
+    21064:Windows_NT:50:3)
+	echo alpha-dec-winnt3.5
+	exit ;;
+    Amiga*:UNIX_System_V:4.0:*)
+	echo m68k-unknown-sysv4
+	exit ;;
+    *:[Aa]miga[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-amigaos
+	exit ;;
+    *:[Mm]orph[Oo][Ss]:*:*)
+	echo ${UNAME_MACHINE}-unknown-morphos
+	exit ;;
+    *:OS/390:*:*)
+	echo i370-ibm-openedition
+	exit ;;
+    *:z/VM:*:*)
+	echo s390-ibm-zvmoe
+	exit ;;
+    *:OS400:*:*)
+	echo powerpc-ibm-os400
+	exit ;;
+    arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
+	echo arm-acorn-riscix${UNAME_RELEASE}
+	exit ;;
+    arm:riscos:*:*|arm:RISCOS:*:*)
+	echo arm-unknown-riscos
+	exit ;;
+    SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
+	echo hppa1.1-hitachi-hiuxmpp
+	exit ;;
+    Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
+	# akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
+	if test "`(/bin/universe) 2>/dev/null`" = att ; then
+		echo pyramid-pyramid-sysv3
+	else
+		echo pyramid-pyramid-bsd
+	fi
+	exit ;;
+    NILE*:*:*:dcosx)
+	echo pyramid-pyramid-svr4
+	exit ;;
+    DRS?6000:unix:4.0:6*)
+	echo sparc-icl-nx6
+	exit ;;
+    DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
+	case `/usr/bin/uname -p` in
+	    sparc) echo sparc-icl-nx7; exit ;;
+	esac ;;
+    s390x:SunOS:*:*)
+	echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4H:SunOS:5.*:*)
+	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
+	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	echo i386-pc-auroraux${UNAME_RELEASE}
+	exit ;;
+    i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
+	eval $set_cc_for_build
+	SUN_ARCH="i386"
+	# If there is a compiler, see if it is configured for 64-bit objects.
+	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
+	# This test works for both compilers.
+	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
+		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		grep IS_64BIT_ARCH >/dev/null
+	    then
+		SUN_ARCH="x86_64"
+	    fi
+	fi
+	echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:6*:*)
+	# According to config.sub, this is the proper way to canonicalize
+	# SunOS6.  Hard to guess exactly what SunOS6 will be like, but
+	# it's likely to be more like Solaris than SunOS4.
+	echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    sun4*:SunOS:*:*)
+	case "`/usr/bin/arch -k`" in
+	    Series*|S4*)
+		UNAME_RELEASE=`uname -v`
+		;;
+	esac
+	# Japanese Language versions have a version number like `4.1.3-JL'.
+	echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
+	exit ;;
+    sun3*:SunOS:*:*)
+	echo m68k-sun-sunos${UNAME_RELEASE}
+	exit ;;
+    sun*:*:4.2BSD:*)
+	UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
+	test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
+	case "`/bin/arch`" in
+	    sun3)
+		echo m68k-sun-sunos${UNAME_RELEASE}
+		;;
+	    sun4)
+		echo sparc-sun-sunos${UNAME_RELEASE}
+		;;
+	esac
+	exit ;;
+    aushp:SunOS:*:*)
+	echo sparc-auspex-sunos${UNAME_RELEASE}
+	exit ;;
+    # The situation for MiNT is a little confusing.  The machine name
+    # can be virtually everything (everything which is not
+    # "atarist" or "atariste" at least should have a processor
+    # > m68000).  The system name ranges from "MiNT" over "FreeMiNT"
+    # to the lowercase version "mint" (or "freemint").  Finally
+    # the system name "TOS" denotes a system which is actually not
+    # MiNT.  But MiNT is downward compatible to TOS, so this should
+    # be no problem.
+    atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
+	echo m68k-atari-mint${UNAME_RELEASE}
+	exit ;;
+    milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
+	echo m68k-milan-mint${UNAME_RELEASE}
+	exit ;;
+    hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
+	echo m68k-hades-mint${UNAME_RELEASE}
+	exit ;;
+    *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
+	echo m68k-unknown-mint${UNAME_RELEASE}
+	exit ;;
+    m68k:machten:*:*)
+	echo m68k-apple-machten${UNAME_RELEASE}
+	exit ;;
+    powerpc:machten:*:*)
+	echo powerpc-apple-machten${UNAME_RELEASE}
+	exit ;;
+    RISC*:Mach:*:*)
+	echo mips-dec-mach_bsd4.3
+	exit ;;
+    RISC*:ULTRIX:*:*)
+	echo mips-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    VAX*:ULTRIX*:*:*)
+	echo vax-dec-ultrix${UNAME_RELEASE}
+	exit ;;
+    2020:CLIX:*:* | 2430:CLIX:*:*)
+	echo clipper-intergraph-clix${UNAME_RELEASE}
+	exit ;;
+    mips:*:*:UMIPS | mips:*:*:RISCos)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+#ifdef __cplusplus
+#include   /* for printf() prototype */
+	int main (int argc, char *argv[]) {
+#else
+	int main (argc, argv) int argc; char *argv[]; {
+#endif
+	#if defined (host_mips) && defined (MIPSEB)
+	#if defined (SYSTYPE_SYSV)
+	  printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_SVR4)
+	  printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
+	#endif
+	#if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
+	  printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
+	#endif
+	#endif
+	  exit (-1);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c &&
+	  dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
+	  SYSTEM_NAME=`$dummy $dummyarg` &&
+	    { echo "$SYSTEM_NAME"; exit; }
+	echo mips-mips-riscos${UNAME_RELEASE}
+	exit ;;
+    Motorola:PowerMAX_OS:*:*)
+	echo powerpc-motorola-powermax
+	exit ;;
+    Motorola:*:4.3:PL8-*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
+	echo powerpc-harris-powermax
+	exit ;;
+    Night_Hawk:Power_UNIX:*:*)
+	echo powerpc-harris-powerunix
+	exit ;;
+    m88k:CX/UX:7*:*)
+	echo m88k-harris-cxux7
+	exit ;;
+    m88k:*:4*:R4*)
+	echo m88k-motorola-sysv4
+	exit ;;
+    m88k:*:3*:R3*)
+	echo m88k-motorola-sysv3
+	exit ;;
+    AViiON:dgux:*:*)
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
+	then
+	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
+	       [ ${TARGET_BINARY_INTERFACE}x = x ]
+	    then
+		echo m88k-dg-dgux${UNAME_RELEASE}
+	    else
+		echo m88k-dg-dguxbcs${UNAME_RELEASE}
+	    fi
+	else
+	    echo i586-dg-dgux${UNAME_RELEASE}
+	fi
+	exit ;;
+    M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
+	echo m88k-dolphin-sysv3
+	exit ;;
+    M88*:*:R3*:*)
+	# Delta 88k system running SVR3
+	echo m88k-motorola-sysv3
+	exit ;;
+    XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
+	echo m88k-tektronix-sysv3
+	exit ;;
+    Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
+	echo m68k-tektronix-bsd
+	exit ;;
+    *:IRIX*:*:*)
+	echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
+	exit ;;
+    ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
+	echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
+	exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
+    i*86:AIX:*:*)
+	echo i386-ibm-aix
+	exit ;;
+    ia64:AIX:*:*)
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:2:3)
+	if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
+		eval $set_cc_for_build
+		sed 's/^		//' << EOF >$dummy.c
+		#include 
+
+		main()
+			{
+			if (!__power_pc())
+				exit(1);
+			puts("powerpc-ibm-aix3.2.5");
+			exit(0);
+			}
+EOF
+		if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
+		then
+			echo "$SYSTEM_NAME"
+		else
+			echo rs6000-ibm-aix3.2.5
+		fi
+	elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
+		echo rs6000-ibm-aix3.2.4
+	else
+		echo rs6000-ibm-aix3.2
+	fi
+	exit ;;
+    *:AIX:*:[4567])
+	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
+	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
+		IBM_ARCH=rs6000
+	else
+		IBM_ARCH=powerpc
+	fi
+	if [ -x /usr/bin/oslevel ] ; then
+		IBM_REV=`/usr/bin/oslevel`
+	else
+		IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
+	fi
+	echo ${IBM_ARCH}-ibm-aix${IBM_REV}
+	exit ;;
+    *:AIX:*:*)
+	echo rs6000-ibm-aix
+	exit ;;
+    ibmrt:4.4BSD:*|romp-ibm:BSD:*)
+	echo romp-ibm-bsd4.4
+	exit ;;
+    ibmrt:*BSD:*|romp-ibm:BSD:*)            # covers RT/PC BSD and
+	echo romp-ibm-bsd${UNAME_RELEASE}   # 4.3 with uname added to
+	exit ;;                             # report: romp-ibm BSD 4.3
+    *:BOSX:*:*)
+	echo rs6000-bull-bosx
+	exit ;;
+    DPX/2?00:B.O.S.:*:*)
+	echo m68k-bull-sysv3
+	exit ;;
+    9000/[34]??:4.3bsd:1.*:*)
+	echo m68k-hp-bsd
+	exit ;;
+    hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
+	echo m68k-hp-bsd4.4
+	exit ;;
+    9000/[34678]??:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	case "${UNAME_MACHINE}" in
+	    9000/31? )            HP_ARCH=m68000 ;;
+	    9000/[34]?? )         HP_ARCH=m68k ;;
+	    9000/[678][0-9][0-9])
+		if [ -x /usr/bin/getconf ]; then
+		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
+		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+		    case "${sc_cpu_version}" in
+		      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case "${sc_kernel_bits}" in
+			  32) HP_ARCH="hppa2.0n" ;;
+			  64) HP_ARCH="hppa2.0w" ;;
+			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
+			esac ;;
+		    esac
+		fi
+		if [ "${HP_ARCH}" = "" ]; then
+		    eval $set_cc_for_build
+		    sed 's/^		//' << EOF >$dummy.c
+
+		#define _HPUX_SOURCE
+		#include 
+		#include 
+
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
+
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
+EOF
+		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
+		    test -z "$HP_ARCH" && HP_ARCH=hppa
+		fi ;;
+	esac
+	if [ ${HP_ARCH} = "hppa2.0w" ]
+	then
+	    eval $set_cc_for_build
+
+	    # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
+	    # 32-bit code.  hppa64-hp-hpux* has the same kernel and a compiler
+	    # generating 64-bit code.  GNU and HP use different nomenclature:
+	    #
+	    # $ CC_FOR_BUILD=cc ./config.guess
+	    # => hppa2.0w-hp-hpux11.23
+	    # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
+	    # => hppa64-hp-hpux11.23
+
+	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
+		grep -q __LP64__
+	    then
+		HP_ARCH="hppa2.0w"
+	    else
+		HP_ARCH="hppa64"
+	    fi
+	fi
+	echo ${HP_ARCH}-hp-hpux${HPUX_REV}
+	exit ;;
+    ia64:HP-UX:*:*)
+	HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
+	echo ia64-hp-hpux${HPUX_REV}
+	exit ;;
+    3050*:HI-UX:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#include 
+	int
+	main ()
+	{
+	  long cpu = sysconf (_SC_CPU_VERSION);
+	  /* The order matters, because CPU_IS_HP_MC68K erroneously returns
+	     true for CPU_PA_RISC1_0.  CPU_IS_PA_RISC returns correct
+	     results, however.  */
+	  if (CPU_IS_PA_RISC (cpu))
+	    {
+	      switch (cpu)
+		{
+		  case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
+		  case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
+		  default: puts ("hppa-hitachi-hiuxwe2"); break;
+		}
+	    }
+	  else if (CPU_IS_HP_MC68K (cpu))
+	    puts ("m68k-hitachi-hiuxwe2");
+	  else puts ("unknown-hitachi-hiuxwe2");
+	  exit (0);
+	}
+EOF
+	$CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
+		{ echo "$SYSTEM_NAME"; exit; }
+	echo unknown-hitachi-hiuxwe2
+	exit ;;
+    9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
+	echo hppa1.1-hp-bsd
+	exit ;;
+    9000/8??:4.3bsd:*:*)
+	echo hppa1.0-hp-bsd
+	exit ;;
+    *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
+	echo hppa1.0-hp-mpeix
+	exit ;;
+    hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
+	echo hppa1.1-hp-osf
+	exit ;;
+    hp8??:OSF1:*:*)
+	echo hppa1.0-hp-osf
+	exit ;;
+    i*86:OSF1:*:*)
+	if [ -x /usr/sbin/sysversion ] ; then
+	    echo ${UNAME_MACHINE}-unknown-osf1mk
+	else
+	    echo ${UNAME_MACHINE}-unknown-osf1
+	fi
+	exit ;;
+    parisc*:Lites*:*:*)
+	echo hppa1.1-hp-lites
+	exit ;;
+    C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
+	echo c1-convex-bsd
+	exit ;;
+    C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
+	echo c34-convex-bsd
+	exit ;;
+    C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
+	echo c38-convex-bsd
+	exit ;;
+    C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
+	echo c4-convex-bsd
+	exit ;;
+    CRAY*Y-MP:*:*:*)
+	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*[A-Z]90:*:*:*)
+	echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
+	| sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
+	      -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
+	      -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*TS:*:*:*)
+	echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*T3E:*:*:*)
+	echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    CRAY*SV1:*:*:*)
+	echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    *:UNICOS/mp:*:*)
+	echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
+	exit ;;
+    F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
+	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
+	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    5000:UNIX_System_V:4.*:*)
+	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
+    i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
+	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
+	exit ;;
+    sparc*:BSD/OS:*:*)
+	echo sparc-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:BSD/OS:*:*)
+	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
+	exit ;;
+    *:FreeBSD:*:*)
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case ${UNAME_PROCESSOR} in
+	    amd64)
+		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	    *)
+		echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	esac
+	exit ;;
+    i*:CYGWIN*:*)
+	echo ${UNAME_MACHINE}-pc-cygwin
+	exit ;;
+    *:MINGW*:*)
+	echo ${UNAME_MACHINE}-pc-mingw32
+	exit ;;
+    i*:MSYS*:*)
+	echo ${UNAME_MACHINE}-pc-msys
+	exit ;;
+    i*:windows32*:*)
+	# uname -m includes "-pc" on this system.
+	echo ${UNAME_MACHINE}-mingw32
+	exit ;;
+    i*:PW*:*)
+	echo ${UNAME_MACHINE}-pc-pw32
+	exit ;;
+    *:Interix*:*)
+	case ${UNAME_MACHINE} in
+	    x86)
+		echo i586-pc-interix${UNAME_RELEASE}
+		exit ;;
+	    authenticamd | genuineintel | EM64T)
+		echo x86_64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	    IA64)
+		echo ia64-unknown-interix${UNAME_RELEASE}
+		exit ;;
+	esac ;;
+    [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
+	echo i${UNAME_MACHINE}-pc-mks
+	exit ;;
+    8664:Windows_NT:*)
+	echo x86_64-pc-mks
+	exit ;;
+    i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
+	# How do we know it's Interix rather than the generic POSIX subsystem?
+	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
+	# UNAME_MACHINE based on the output of uname instead of i386?
+	echo i586-pc-interix
+	exit ;;
+    i*:UWIN*:*)
+	echo ${UNAME_MACHINE}-pc-uwin
+	exit ;;
+    amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
+	echo x86_64-unknown-cygwin
+	exit ;;
+    p*:CYGWIN*:*)
+	echo powerpcle-unknown-cygwin
+	exit ;;
+    prep*:SunOS:5.*:*)
+	echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
+    *:GNU:*:*)
+	# the GNU system
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	exit ;;
+    *:GNU/*:*:*)
+	# other systems with GNU libc and userland
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	exit ;;
+    i*86:Minix:*:*)
+	echo ${UNAME_MACHINE}-pc-minix
+	exit ;;
+    aarch64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    alpha:Linux:*:*)
+	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
+	  EV5)   UNAME_MACHINE=alphaev5 ;;
+	  EV56)  UNAME_MACHINE=alphaev56 ;;
+	  PCA56) UNAME_MACHINE=alphapca56 ;;
+	  PCA57) UNAME_MACHINE=alphapca56 ;;
+	  EV6)   UNAME_MACHINE=alphaev6 ;;
+	  EV67)  UNAME_MACHINE=alphaev67 ;;
+	  EV68*) UNAME_MACHINE=alphaev68 ;;
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	exit ;;
+    arm*:Linux:*:*)
+	eval $set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo ${UNAME_MACHINE}-unknown-linux-gnu
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+	    else
+		echo ${UNAME_MACHINE}-unknown-linux-gnueabihf
+	    fi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    cris:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-gnu
+	exit ;;
+    crisv32:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-gnu
+	exit ;;
+    frv:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    hexagon:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    i*86:Linux:*:*)
+	LIBC=gnu
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#ifdef __dietlibc__
+	LIBC=dietlibc
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
+	exit ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef ${UNAME_MACHINE}
+	#undef ${UNAME_MACHINE}el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=${UNAME_MACHINE}el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=${UNAME_MACHINE}
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
+	;;
+    or32:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    padre:Linux:*:*)
+	echo sparc-unknown-linux-gnu
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-gnu
+	exit ;;
+    parisc:Linux:*:* | hppa:Linux:*:*)
+	# Look for CPU level
+	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
+	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
+	  *)    echo hppa-unknown-linux-gnu ;;
+	esac
+	exit ;;
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-gnu
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-gnu
+	exit ;;
+    s390:Linux:*:* | s390x:Linux:*:*)
+	echo ${UNAME_MACHINE}-ibm-linux
+	exit ;;
+    sh64*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    sh*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    sparc:Linux:*:* | sparc64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    tile*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    vax:Linux:*:*)
+	echo ${UNAME_MACHINE}-dec-linux-gnu
+	exit ;;
+    x86_64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    xtensa*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    i*86:DYNIX/ptx:4*:*)
+	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
+	# earlier versions are messed up and put the nodename in both
+	# sysname and nodename.
+	echo i386-sequent-sysv4
+	exit ;;
+    i*86:UNIX_SV:4.2MP:2.*)
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
+	# I just have to hope.  -- rms.
+	# Use sysv4.2uw... so that sysv4* matches it.
+	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
+	exit ;;
+    i*86:OS/2:*:*)
+	# If we were able to find `uname', then EMX Unix compatibility
+	# is probably installed.
+	echo ${UNAME_MACHINE}-pc-os2-emx
+	exit ;;
+    i*86:XTS-300:*:STOP)
+	echo ${UNAME_MACHINE}-unknown-stop
+	exit ;;
+    i*86:atheos:*:*)
+	echo ${UNAME_MACHINE}-unknown-atheos
+	exit ;;
+    i*86:syllable:*:*)
+	echo ${UNAME_MACHINE}-pc-syllable
+	exit ;;
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
+	echo i386-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    i*86:*DOS:*:*)
+	echo ${UNAME_MACHINE}-pc-msdosdjgpp
+	exit ;;
+    i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
+	UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
+	if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
+		echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
+	else
+		echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
+	fi
+	exit ;;
+    i*86:*:5:[678]*)
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	case `/bin/uname -X | grep "^Machine"` in
+	    *486*)	     UNAME_MACHINE=i486 ;;
+	    *Pentium)	     UNAME_MACHINE=i586 ;;
+	    *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
+	esac
+	echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
+	exit ;;
+    i*86:*:3.2:*)
+	if test -f /usr/options/cb.name; then
+		UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then
+		UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+		(/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
+		(/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
+			&& UNAME_MACHINE=i586
+		(/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		(/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
+			&& UNAME_MACHINE=i686
+		echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
+	else
+		echo ${UNAME_MACHINE}-pc-sysv32
+	fi
+	exit ;;
+    pc:*:*:*)
+	# Left here for compatibility:
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configury will decide that
+	# this is a cross-build.
+	echo i586-pc-msdosdjgpp
+	exit ;;
+    Intel:Mach:3*:*)
+	echo i386-pc-mach3
+	exit ;;
+    paragon:*:*:*)
+	echo i860-intel-osf1
+	exit ;;
+    i860:*:4.*:*) # i860-SVR4
+	if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
+	  echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
+	else # Add other i860-SVR4 vendors below as they are discovered.
+	  echo i860-unknown-sysv${UNAME_RELEASE}  # Unknown i860-SVR4
+	fi
+	exit ;;
+    mini*:CTIX:SYS*5:*)
+	# "miniframe"
+	echo m68010-convergent-sysv
+	exit ;;
+    mc68k:UNIX:SYSTEM5:3.51m)
+	echo m68k-convergent-sysv
+	exit ;;
+    M680?0:D-NIX:5.3:*)
+	echo m68k-diab-dnix
+	exit ;;
+    M68*:*:R3V[5678]*:*)
+	test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
+    3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
+	OS_REL=''
+	test -r /etc/.relid \
+	&& OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
+    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
+	echo m68k-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    mc68030:UNIX_System_V:4.*:*)
+	echo m68k-atari-sysv4
+	exit ;;
+    TSUNAMI:LynxOS:2.*:*)
+	echo sparc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    rs6000:LynxOS:2.*:*)
+	echo rs6000-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
+	echo powerpc-unknown-lynxos${UNAME_RELEASE}
+	exit ;;
+    SM[BE]S:UNIX_SV:*:*)
+	echo mips-dde-sysv${UNAME_RELEASE}
+	exit ;;
+    RM*:ReliantUNIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    RM*:SINIX-*:*:*)
+	echo mips-sni-sysv4
+	exit ;;
+    *:SINIX-*:*:*)
+	if uname -p 2>/dev/null >/dev/null ; then
+		UNAME_MACHINE=`(uname -p) 2>/dev/null`
+		echo ${UNAME_MACHINE}-sni-sysv4
+	else
+		echo ns32k-sni-sysv
+	fi
+	exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says 
+	echo i586-unisys-sysv4
+	exit ;;
+    *:UNIX_System_V:4*:FTX*)
+	# From Gerald Hewes .
+	# How about differentiating between stratus architectures? -djm
+	echo hppa1.1-stratus-sysv4
+	exit ;;
+    *:*:*:FTX*)
+	# From seanf@swdc.stratus.com.
+	echo i860-stratus-sysv4
+	exit ;;
+    i*86:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo ${UNAME_MACHINE}-stratus-vos
+	exit ;;
+    *:VOS:*:*)
+	# From Paul.Green@stratus.com.
+	echo hppa1.1-stratus-vos
+	exit ;;
+    mc68*:A/UX:*:*)
+	echo m68k-apple-aux${UNAME_RELEASE}
+	exit ;;
+    news*:NEWS-OS:6*:*)
+	echo mips-sony-newsos6
+	exit ;;
+    R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
+	if [ -d /usr/nec ]; then
+		echo mips-nec-sysv${UNAME_RELEASE}
+	else
+		echo mips-unknown-sysv${UNAME_RELEASE}
+	fi
+	exit ;;
+    BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
+	echo powerpc-be-beos
+	exit ;;
+    BeMac:BeOS:*:*)	# BeOS running on Mac or Mac clone, PPC only.
+	echo powerpc-apple-beos
+	exit ;;
+    BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
+	echo i586-pc-beos
+	exit ;;
+    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
+	echo i586-pc-haiku
+	exit ;;
+    SX-4:SUPER-UX:*:*)
+	echo sx4-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-5:SUPER-UX:*:*)
+	echo sx5-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-6:SUPER-UX:*:*)
+	echo sx6-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-7:SUPER-UX:*:*)
+	echo sx7-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8:SUPER-UX:*:*)
+	echo sx8-nec-superux${UNAME_RELEASE}
+	exit ;;
+    SX-8R:SUPER-UX:*:*)
+	echo sx8r-nec-superux${UNAME_RELEASE}
+	exit ;;
+    Power*:Rhapsody:*:*)
+	echo powerpc-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Rhapsody:*:*)
+	echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
+	exit ;;
+    *:Darwin:*:*)
+	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
+	case $UNAME_PROCESSOR in
+	    i386)
+		eval $set_cc_for_build
+		if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
+		  if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		      (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		      grep IS_64BIT_ARCH >/dev/null
+		  then
+		      UNAME_PROCESSOR="x86_64"
+		  fi
+		fi ;;
+	    unknown) UNAME_PROCESSOR=powerpc ;;
+	esac
+	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
+	exit ;;
+    *:procnto*:*:* | *:QNX:[0123456789]*:*)
+	UNAME_PROCESSOR=`uname -p`
+	if test "$UNAME_PROCESSOR" = "x86"; then
+		UNAME_PROCESSOR=i386
+		UNAME_MACHINE=pc
+	fi
+	echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
+	exit ;;
+    *:QNX:*:4*)
+	echo i386-pc-qnx
+	exit ;;
+    NEO-?:NONSTOP_KERNEL:*:*)
+	echo neo-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSE-?:NONSTOP_KERNEL:*:*)
+	echo nse-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSR-?:NONSTOP_KERNEL:*:*)
+	echo nsr-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    *:NonStop-UX:*:*)
+	echo mips-compaq-nonstopux
+	exit ;;
+    BS2000:POSIX*:*:*)
+	echo bs2000-siemens-sysv
+	exit ;;
+    DS/*:UNIX_System_V:*:*)
+	echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
+	exit ;;
+    *:Plan9:*:*)
+	# "uname -m" is not consistent, so use $cputype instead. 386
+	# is converted to i386 for consistency with other x86
+	# operating systems.
+	if test "$cputype" = "386"; then
+	    UNAME_MACHINE=i386
+	else
+	    UNAME_MACHINE="$cputype"
+	fi
+	echo ${UNAME_MACHINE}-unknown-plan9
+	exit ;;
+    *:TOPS-10:*:*)
+	echo pdp10-unknown-tops10
+	exit ;;
+    *:TENEX:*:*)
+	echo pdp10-unknown-tenex
+	exit ;;
+    KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
+	echo pdp10-dec-tops20
+	exit ;;
+    XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
+	echo pdp10-xkl-tops20
+	exit ;;
+    *:TOPS-20:*:*)
+	echo pdp10-unknown-tops20
+	exit ;;
+    *:ITS:*:*)
+	echo pdp10-unknown-its
+	exit ;;
+    SEI:*:*:SEIUX)
+	echo mips-sei-seiux${UNAME_RELEASE}
+	exit ;;
+    *:DragonFly:*:*)
+	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
+	exit ;;
+    *:*VMS:*:*)
+	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	case "${UNAME_MACHINE}" in
+	    A*) echo alpha-dec-vms ; exit ;;
+	    I*) echo ia64-dec-vms ; exit ;;
+	    V*) echo vax-dec-vms ; exit ;;
+	esac ;;
+    *:XENIX:*:SysV)
+	echo i386-pc-xenix
+	exit ;;
+    i*86:skyos:*:*)
+	echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
+	exit ;;
+    i*86:rdos:*:*)
+	echo ${UNAME_MACHINE}-pc-rdos
+	exit ;;
+    i*86:AROS:*:*)
+	echo ${UNAME_MACHINE}-pc-aros
+	exit ;;
+    x86_64:VMkernel:*:*)
+	echo ${UNAME_MACHINE}-unknown-esx
+	exit ;;
+esac
+
+#echo '(No uname command or uname output not recognized.)' 1>&2
+#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
+
+eval $set_cc_for_build
+cat >$dummy.c <
+# include 
+#endif
+main ()
+{
+#if defined (sony)
+#if defined (MIPSEB)
+  /* BFD wants "bsd" instead of "newsos".  Perhaps BFD should be changed,
+     I don't know....  */
+  printf ("mips-sony-bsd\n"); exit (0);
+#else
+#include 
+  printf ("m68k-sony-newsos%s\n",
+#ifdef NEWSOS4
+	"4"
+#else
+	""
+#endif
+	); exit (0);
+#endif
+#endif
+
+#if defined (__arm) && defined (__acorn) && defined (__unix)
+  printf ("arm-acorn-riscix\n"); exit (0);
+#endif
+
+#if defined (hp300) && !defined (hpux)
+  printf ("m68k-hp-bsd\n"); exit (0);
+#endif
+
+#if defined (NeXT)
+#if !defined (__ARCHITECTURE__)
+#define __ARCHITECTURE__ "m68k"
+#endif
+  int version;
+  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  if (version < 4)
+    printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
+  else
+    printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
+  exit (0);
+#endif
+
+#if defined (MULTIMAX) || defined (n16)
+#if defined (UMAXV)
+  printf ("ns32k-encore-sysv\n"); exit (0);
+#else
+#if defined (CMU)
+  printf ("ns32k-encore-mach\n"); exit (0);
+#else
+  printf ("ns32k-encore-bsd\n"); exit (0);
+#endif
+#endif
+#endif
+
+#if defined (__386BSD__)
+  printf ("i386-pc-bsd\n"); exit (0);
+#endif
+
+#if defined (sequent)
+#if defined (i386)
+  printf ("i386-sequent-dynix\n"); exit (0);
+#endif
+#if defined (ns32000)
+  printf ("ns32k-sequent-dynix\n"); exit (0);
+#endif
+#endif
+
+#if defined (_SEQUENT_)
+    struct utsname un;
+
+    uname(&un);
+
+    if (strncmp(un.version, "V2", 2) == 0) {
+	printf ("i386-sequent-ptx2\n"); exit (0);
+    }
+    if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
+	printf ("i386-sequent-ptx1\n"); exit (0);
+    }
+    printf ("i386-sequent-ptx\n"); exit (0);
+
+#endif
+
+#if defined (vax)
+# if !defined (ultrix)
+#  include 
+#  if defined (BSD)
+#   if BSD == 43
+      printf ("vax-dec-bsd4.3\n"); exit (0);
+#   else
+#    if BSD == 199006
+      printf ("vax-dec-bsd4.3reno\n"); exit (0);
+#    else
+      printf ("vax-dec-bsd\n"); exit (0);
+#    endif
+#   endif
+#  else
+    printf ("vax-dec-bsd\n"); exit (0);
+#  endif
+# else
+    printf ("vax-dec-ultrix\n"); exit (0);
+# endif
+#endif
+
+#if defined (alliant) && defined (i860)
+  printf ("i860-alliant-bsd\n"); exit (0);
+#endif
+
+  exit (1);
+}
+EOF
+
+$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
+	{ echo "$SYSTEM_NAME"; exit; }
+
+# Apollos put the system type in the environment.
+
+test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
+
+# Convex versions that predate uname can use getsysinfo(1)
+
+if [ -x /usr/convex/getsysinfo ]
+then
+    case `getsysinfo -f cpu_type` in
+    c1*)
+	echo c1-convex-bsd
+	exit ;;
+    c2*)
+	if getsysinfo -f scalar_acc
+	then echo c32-convex-bsd
+	else echo c2-convex-bsd
+	fi
+	exit ;;
+    c34*)
+	echo c34-convex-bsd
+	exit ;;
+    c38*)
+	echo c38-convex-bsd
+	exit ;;
+    c4*)
+	echo c4-convex-bsd
+	exit ;;
+    esac
+fi
+
+cat >&2 < in order to provide the needed
+information to handle your system.
+
+config.guess timestamp = $timestamp
+
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+
+hostinfo               = `(hostinfo) 2>/dev/null`
+/bin/universe          = `(/bin/universe) 2>/dev/null`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
+/bin/arch              = `(/bin/arch) 2>/dev/null`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+
+UNAME_MACHINE = ${UNAME_MACHINE}
+UNAME_RELEASE = ${UNAME_RELEASE}
+UNAME_SYSTEM  = ${UNAME_SYSTEM}
+UNAME_VERSION = ${UNAME_VERSION}
+EOF
+
+exit 1
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/erasure-code/jerasure/jerasure/config.sub b/src/erasure-code/jerasure/jerasure/config.sub
new file mode 100755
index 00000000..c894da45
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/config.sub
@@ -0,0 +1,1773 @@
+#! /bin/sh
+# Configuration validation subroutine script.
+#   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012 Free Software Foundation, Inc.
+
+timestamp='2012-02-10'
+
+# This file is (in principle) common to ALL GNU software.
+# The presence of a machine in this file suggests that SOME GNU software
+# can handle that machine.  It does not imply ALL GNU software can.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see .
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+
+# Please send patches to .  Submit a context
+# diff and a properly formatted GNU ChangeLog entry.
+#
+# Configuration subroutine to validate and canonicalize a configuration type.
+# Supply the specified configuration type as an argument.
+# If it is invalid, we print an error message on stderr and exit with code 1.
+# Otherwise, we print the canonical config type on stdout and succeed.
+
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+
+# This file is supposed to be the same for all GNU packages
+# and recognize all the CPU types, system types and aliases
+# that are meaningful with *any* GNU software.
+# Each package is responsible for reporting which valid configurations
+# it does not support.  The user should be able to distinguish
+# a failure to support a valid configuration from a meaningless
+# configuration.
+
+# The goal of this file is to map all the various variations of a given
+# machine specification into a single specification in the form:
+#	CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or in some cases, the newer four-part form:
+#	CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# It is wrong to echo any other type of specification.
+
+me=`echo "$0" | sed -e 's,.*/,,'`
+
+usage="\
+Usage: $0 [OPTION] CPU-MFR-OPSYS
+       $0 [OPTION] ALIAS
+
+Canonicalize a configuration name.
+
+Operation modes:
+  -h, --help         print this help, then exit
+  -t, --time-stamp   print date of last modification, then exit
+  -v, --version      print version number, then exit
+
+Report bugs and patches to ."
+
+version="\
+GNU config.sub ($timestamp)
+
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+Free Software Foundation, Inc.
+
+This is free software; see the source for copying conditions.  There is NO
+warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
+
+help="
+Try \`$me --help' for more information."
+
+# Parse command line
+while test $# -gt 0 ; do
+  case $1 in
+    --time-stamp | --time* | -t )
+       echo "$timestamp" ; exit ;;
+    --version | -v )
+       echo "$version" ; exit ;;
+    --help | --h* | -h )
+       echo "$usage"; exit ;;
+    -- )     # Stop option processing
+       shift; break ;;
+    - )	# Use stdin as input.
+       break ;;
+    -* )
+       echo "$me: invalid option $1$help"
+       exit 1 ;;
+
+    *local*)
+       # First pass through any local machine types.
+       echo $1
+       exit ;;
+
+    * )
+       break ;;
+  esac
+done
+
+case $# in
+ 0) echo "$me: missing argument$help" >&2
+    exit 1;;
+ 1) ;;
+ *) echo "$me: too many arguments$help" >&2
+    exit 1;;
+esac
+
+# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
+# Here we must recognize all the valid KERNEL-OS combinations.
+maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
+case $maybe_os in
+  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+  linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  knetbsd*-gnu* | netbsd*-gnu* | \
+  kopensolaris*-gnu* | \
+  storm-chaos* | os2-emx* | rtmk-nova*)
+    os=-$maybe_os
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
+    ;;
+  android-linux)
+    os=-linux-android
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
+    ;;
+  *)
+    basic_machine=`echo $1 | sed 's/-[^-]*$//'`
+    if [ $basic_machine != $1 ]
+    then os=`echo $1 | sed 's/.*-/-/'`
+    else os=; fi
+    ;;
+esac
+
+### Let's recognize common machines as not being operating systems so
+### that things like config.sub decstation-3100 work.  We also
+### recognize some manufacturers as not being operating systems, so we
+### can provide default operating systems below.
+case $os in
+	-sun*os*)
+		# Prevent following clause from handling this invalid input.
+		;;
+	-dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
+	-att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
+	-unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
+	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
+	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
+	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
+	-apple | -axis | -knuth | -cray | -microblaze)
+		os=
+		basic_machine=$1
+		;;
+	-bluegene*)
+		os=-cnk
+		;;
+	-sim | -cisco | -oki | -wec | -winbond)
+		os=
+		basic_machine=$1
+		;;
+	-scout)
+		;;
+	-wrs)
+		os=-vxworks
+		basic_machine=$1
+		;;
+	-chorusos*)
+		os=-chorusos
+		basic_machine=$1
+		;;
+	-chorusrdb)
+		os=-chorusrdb
+		basic_machine=$1
+		;;
+	-hiux*)
+		os=-hiuxwe2
+		;;
+	-sco6)
+		os=-sco5v6
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5)
+		os=-sco3.2v5
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco4)
+		os=-sco3.2v4
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2.[4-9]*)
+		os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco3.2v[4-9]*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco5v6*)
+		# Don't forget version if it is 3.2v4 or newer.
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-sco*)
+		os=-sco3.2v2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-udk*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-isc)
+		os=-isc2.2
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-clix*)
+		basic_machine=clipper-intergraph
+		;;
+	-isc*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
+		;;
+	-lynx*)
+		os=-lynxos
+		;;
+	-ptx*)
+		basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
+		;;
+	-windowsnt*)
+		os=`echo $os | sed -e 's/windowsnt/winnt/'`
+		;;
+	-psos*)
+		os=-psos
+		;;
+	-mint | -mint[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+esac
+
+# Decode aliases for certain CPU-COMPANY combinations.
+case $basic_machine in
+	# Recognize the basic CPU types without company name.
+	# Some are omitted here because they have special meanings below.
+	1750a | 580 \
+	| a29k \
+	| aarch64 | aarch64_be \
+	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
+	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
+	| am33_2.0 \
+	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+        | be32 | be64 \
+	| bfin \
+	| c4x | clipper \
+	| d10v | d30v | dlx | dsp16xx \
+	| epiphany \
+	| fido | fr30 | frv \
+	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| hexagon \
+	| i370 | i860 | i960 | ia64 \
+	| ip2k | iq2000 \
+	| le32 | le64 \
+	| lm32 \
+	| m32c | m32r | m32rle | m68000 | m68k | m88k \
+	| maxq | mb | microblaze | mcore | mep | metag \
+	| mips | mipsbe | mipseb | mipsel | mipsle \
+	| mips16 \
+	| mips64 | mips64el \
+	| mips64octeon | mips64octeonel \
+	| mips64orion | mips64orionel \
+	| mips64r5900 | mips64r5900el \
+	| mips64vr | mips64vrel \
+	| mips64vr4100 | mips64vr4100el \
+	| mips64vr4300 | mips64vr4300el \
+	| mips64vr5000 | mips64vr5000el \
+	| mips64vr5900 | mips64vr5900el \
+	| mipsisa32 | mipsisa32el \
+	| mipsisa32r2 | mipsisa32r2el \
+	| mipsisa64 | mipsisa64el \
+	| mipsisa64r2 | mipsisa64r2el \
+	| mipsisa64sb1 | mipsisa64sb1el \
+	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipstx39 | mipstx39el \
+	| mn10200 | mn10300 \
+	| moxie \
+	| mt \
+	| msp430 \
+	| nds32 | nds32le | nds32be \
+	| nios | nios2 \
+	| ns16k | ns32k \
+	| open8 \
+	| or32 \
+	| pdp10 | pdp11 | pj | pjl \
+	| powerpc | powerpc64 | powerpc64le | powerpcle \
+	| pyramid \
+	| rl78 | rx \
+	| score \
+	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh64 | sh64le \
+	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
+	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
+	| spu \
+	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
+	| ubicom32 \
+	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
+	| we32k \
+	| x86 | xc16x | xstormy16 | xtensa \
+	| z8k | z80)
+		basic_machine=$basic_machine-unknown
+		;;
+	c54x)
+		basic_machine=tic54x-unknown
+		;;
+	c55x)
+		basic_machine=tic55x-unknown
+		;;
+	c6x)
+		basic_machine=tic6x-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | picochip)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
+		;;
+	ms1)
+		basic_machine=mt-unknown
+		;;
+
+	strongarm | thumb | xscale)
+		basic_machine=arm-unknown
+		;;
+	xgate)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	xscaleeb)
+		basic_machine=armeb-unknown
+		;;
+
+	xscaleel)
+		basic_machine=armel-unknown
+		;;
+
+	# We use `pc' rather than `unknown'
+	# because (1) that's what they normally are, and
+	# (2) the word "unknown" tends to confuse beginning users.
+	i*86 | x86_64)
+	  basic_machine=$basic_machine-pc
+	  ;;
+	# Object if more than one company name word.
+	*-*-*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+	# Recognize the basic CPU types with company name.
+	580-* \
+	| a29k-* \
+	| aarch64-* | aarch64_be-* \
+	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
+	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
+	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
+	| avr-* | avr32-* \
+	| be32-* | be64-* \
+	| bfin-* | bs2000-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* \
+	| clipper-* | craynv-* | cydra-* \
+	| d10v-* | d30v-* | dlx-* \
+	| elxsi-* \
+	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
+	| h8300-* | h8500-* \
+	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| hexagon-* \
+	| i*86-* | i860-* | i960-* | ia64-* \
+	| ip2k-* | iq2000-* \
+	| le32-* | le64-* \
+	| lm32-* \
+	| m32c-* | m32r-* | m32rle-* \
+	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \
+	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
+	| mips16-* \
+	| mips64-* | mips64el-* \
+	| mips64octeon-* | mips64octeonel-* \
+	| mips64orion-* | mips64orionel-* \
+	| mips64r5900-* | mips64r5900el-* \
+	| mips64vr-* | mips64vrel-* \
+	| mips64vr4100-* | mips64vr4100el-* \
+	| mips64vr4300-* | mips64vr4300el-* \
+	| mips64vr5000-* | mips64vr5000el-* \
+	| mips64vr5900-* | mips64vr5900el-* \
+	| mipsisa32-* | mipsisa32el-* \
+	| mipsisa32r2-* | mipsisa32r2el-* \
+	| mipsisa64-* | mipsisa64el-* \
+	| mipsisa64r2-* | mipsisa64r2el-* \
+	| mipsisa64sb1-* | mipsisa64sb1el-* \
+	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipstx39-* | mipstx39el-* \
+	| mmix-* \
+	| mt-* \
+	| msp430-* \
+	| nds32-* | nds32le-* | nds32be-* \
+	| nios-* | nios2-* \
+	| none-* | np1-* | ns16k-* | ns32k-* \
+	| open8-* \
+	| orion-* \
+	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
+	| pyramid-* \
+	| rl78-* | romp-* | rs6000-* | rx-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
+	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
+	| sparclite-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
+	| tahoe-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tile*-* \
+	| tron-* \
+	| ubicom32-* \
+	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
+	| vax-* \
+	| we32k-* \
+	| x86-* | x86_64-* | xc16x-* | xps100-* \
+	| xstormy16-* | xtensa*-* \
+	| ymp-* \
+	| z8k-* | z80-*)
+		;;
+	# Recognize the basic CPU types without company name, with glob match.
+	xtensa*)
+		basic_machine=$basic_machine-unknown
+		;;
+	# Recognize the various machine names and aliases which stand
+	# for a CPU type and a company and sometimes even an OS.
+	386bsd)
+		basic_machine=i386-unknown
+		os=-bsd
+		;;
+	3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
+		basic_machine=m68000-att
+		;;
+	3b*)
+		basic_machine=we32k-att
+		;;
+	a29khif)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	abacus)
+		basic_machine=abacus-unknown
+		;;
+	adobe68k)
+		basic_machine=m68010-adobe
+		os=-scout
+		;;
+	alliant | fx80)
+		basic_machine=fx80-alliant
+		;;
+	altos | altos3068)
+		basic_machine=m68k-altos
+		;;
+	am29k)
+		basic_machine=a29k-none
+		os=-bsd
+		;;
+	amd64)
+		basic_machine=x86_64-pc
+		;;
+	amd64-*)
+		basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	amdahl)
+		basic_machine=580-amdahl
+		os=-sysv
+		;;
+	amiga | amiga-*)
+		basic_machine=m68k-unknown
+		;;
+	amigaos | amigados)
+		basic_machine=m68k-unknown
+		os=-amigaos
+		;;
+	amigaunix | amix)
+		basic_machine=m68k-unknown
+		os=-sysv4
+		;;
+	apollo68)
+		basic_machine=m68k-apollo
+		os=-sysv
+		;;
+	apollo68bsd)
+		basic_machine=m68k-apollo
+		os=-bsd
+		;;
+	aros)
+		basic_machine=i386-pc
+		os=-aros
+		;;
+	aux)
+		basic_machine=m68k-apple
+		os=-aux
+		;;
+	balance)
+		basic_machine=ns32k-sequent
+		os=-dynix
+		;;
+	blackfin)
+		basic_machine=bfin-unknown
+		os=-linux
+		;;
+	blackfin-*)
+		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	bluegene*)
+		basic_machine=powerpc-ibm
+		os=-cnk
+		;;
+	c54x-*)
+		basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c55x-*)
+		basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c6x-*)
+		basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c90)
+		basic_machine=c90-cray
+		os=-unicos
+		;;
+	cegcc)
+		basic_machine=arm-unknown
+		os=-cegcc
+		;;
+	convex-c1)
+		basic_machine=c1-convex
+		os=-bsd
+		;;
+	convex-c2)
+		basic_machine=c2-convex
+		os=-bsd
+		;;
+	convex-c32)
+		basic_machine=c32-convex
+		os=-bsd
+		;;
+	convex-c34)
+		basic_machine=c34-convex
+		os=-bsd
+		;;
+	convex-c38)
+		basic_machine=c38-convex
+		os=-bsd
+		;;
+	cray | j90)
+		basic_machine=j90-cray
+		os=-unicos
+		;;
+	craynv)
+		basic_machine=craynv-cray
+		os=-unicosmp
+		;;
+	cr16 | cr16-*)
+		basic_machine=cr16-unknown
+		os=-elf
+		;;
+	crds | unos)
+		basic_machine=m68k-crds
+		;;
+	crisv32 | crisv32-* | etraxfs*)
+		basic_machine=crisv32-axis
+		;;
+	cris | cris-* | etrax*)
+		basic_machine=cris-axis
+		;;
+	crx)
+		basic_machine=crx-unknown
+		os=-elf
+		;;
+	da30 | da30-*)
+		basic_machine=m68k-da30
+		;;
+	decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
+		basic_machine=mips-dec
+		;;
+	decsystem10* | dec10*)
+		basic_machine=pdp10-dec
+		os=-tops10
+		;;
+	decsystem20* | dec20*)
+		basic_machine=pdp10-dec
+		os=-tops20
+		;;
+	delta | 3300 | motorola-3300 | motorola-delta \
+	      | 3300-motorola | delta-motorola)
+		basic_machine=m68k-motorola
+		;;
+	delta88)
+		basic_machine=m88k-motorola
+		os=-sysv3
+		;;
+	dicos)
+		basic_machine=i686-pc
+		os=-dicos
+		;;
+	djgpp)
+		basic_machine=i586-pc
+		os=-msdosdjgpp
+		;;
+	dpx20 | dpx20-*)
+		basic_machine=rs6000-bull
+		os=-bosx
+		;;
+	dpx2* | dpx2*-bull)
+		basic_machine=m68k-bull
+		os=-sysv3
+		;;
+	ebmon29k)
+		basic_machine=a29k-amd
+		os=-ebmon
+		;;
+	elxsi)
+		basic_machine=elxsi-elxsi
+		os=-bsd
+		;;
+	encore | umax | mmax)
+		basic_machine=ns32k-encore
+		;;
+	es1800 | OSE68k | ose68k | ose | OSE)
+		basic_machine=m68k-ericsson
+		os=-ose
+		;;
+	fx2800)
+		basic_machine=i860-alliant
+		;;
+	genix)
+		basic_machine=ns32k-ns
+		;;
+	gmicro)
+		basic_machine=tron-gmicro
+		os=-sysv
+		;;
+	go32)
+		basic_machine=i386-pc
+		os=-go32
+		;;
+	h3050r* | hiux*)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	h8300hms)
+		basic_machine=h8300-hitachi
+		os=-hms
+		;;
+	h8300xray)
+		basic_machine=h8300-hitachi
+		os=-xray
+		;;
+	h8500hms)
+		basic_machine=h8500-hitachi
+		os=-hms
+		;;
+	harris)
+		basic_machine=m88k-harris
+		os=-sysv3
+		;;
+	hp300-*)
+		basic_machine=m68k-hp
+		;;
+	hp300bsd)
+		basic_machine=m68k-hp
+		os=-bsd
+		;;
+	hp300hpux)
+		basic_machine=m68k-hp
+		os=-hpux
+		;;
+	hp3k9[0-9][0-9] | hp9[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k2[0-9][0-9] | hp9k31[0-9])
+		basic_machine=m68000-hp
+		;;
+	hp9k3[2-9][0-9])
+		basic_machine=m68k-hp
+		;;
+	hp9k6[0-9][0-9] | hp6[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hp9k7[0-79][0-9] | hp7[0-79][0-9])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k78[0-9] | hp78[0-9])
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
+		# FIXME: really hppa2.0-hp
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][13679] | hp8[0-9][13679])
+		basic_machine=hppa1.1-hp
+		;;
+	hp9k8[0-9][0-9] | hp8[0-9][0-9])
+		basic_machine=hppa1.0-hp
+		;;
+	hppa-next)
+		os=-nextstep3
+		;;
+	hppaosf)
+		basic_machine=hppa1.1-hp
+		os=-osf
+		;;
+	hppro)
+		basic_machine=hppa1.1-hp
+		os=-proelf
+		;;
+	i370-ibm* | ibm*)
+		basic_machine=i370-ibm
+		;;
+	i*86v32)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv32
+		;;
+	i*86v4*)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv4
+		;;
+	i*86v)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-sysv
+		;;
+	i*86sol2)
+		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
+		os=-solaris2
+		;;
+	i386mach)
+		basic_machine=i386-mach
+		os=-mach
+		;;
+	i386-vsta | vsta)
+		basic_machine=i386-unknown
+		os=-vsta
+		;;
+	iris | iris4d)
+		basic_machine=mips-sgi
+		case $os in
+		    -irix*)
+			;;
+		    *)
+			os=-irix4
+			;;
+		esac
+		;;
+	isi68 | isi)
+		basic_machine=m68k-isi
+		os=-sysv
+		;;
+	m68knommu)
+		basic_machine=m68k-unknown
+		os=-linux
+		;;
+	m68knommu-*)
+		basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	m88k-omron*)
+		basic_machine=m88k-omron
+		;;
+	magnum | m3230)
+		basic_machine=mips-mips
+		os=-sysv
+		;;
+	merlin)
+		basic_machine=ns32k-utek
+		os=-sysv
+		;;
+	microblaze)
+		basic_machine=microblaze-xilinx
+		;;
+	mingw32)
+		basic_machine=i386-pc
+		os=-mingw32
+		;;
+	mingw32ce)
+		basic_machine=arm-unknown
+		os=-mingw32ce
+		;;
+	miniframe)
+		basic_machine=m68000-convergent
+		;;
+	*mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
+		basic_machine=m68k-atari
+		os=-mint
+		;;
+	mips3*-*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
+		;;
+	mips3*)
+		basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
+		;;
+	monitor)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	morphos)
+		basic_machine=powerpc-unknown
+		os=-morphos
+		;;
+	msdos)
+		basic_machine=i386-pc
+		os=-msdos
+		;;
+	ms1-*)
+		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
+		;;
+	msys)
+		basic_machine=i386-pc
+		os=-msys
+		;;
+	mvs)
+		basic_machine=i370-ibm
+		os=-mvs
+		;;
+	nacl)
+		basic_machine=le32-unknown
+		os=-nacl
+		;;
+	ncr3000)
+		basic_machine=i486-ncr
+		os=-sysv4
+		;;
+	netbsd386)
+		basic_machine=i386-unknown
+		os=-netbsd
+		;;
+	netwinder)
+		basic_machine=armv4l-rebel
+		os=-linux
+		;;
+	news | news700 | news800 | news900)
+		basic_machine=m68k-sony
+		os=-newsos
+		;;
+	news1000)
+		basic_machine=m68030-sony
+		os=-newsos
+		;;
+	news-3600 | risc-news)
+		basic_machine=mips-sony
+		os=-newsos
+		;;
+	necv70)
+		basic_machine=v70-nec
+		os=-sysv
+		;;
+	next | m*-next )
+		basic_machine=m68k-next
+		case $os in
+		    -nextstep* )
+			;;
+		    -ns2*)
+		      os=-nextstep2
+			;;
+		    *)
+		      os=-nextstep3
+			;;
+		esac
+		;;
+	nh3000)
+		basic_machine=m68k-harris
+		os=-cxux
+		;;
+	nh[45]000)
+		basic_machine=m88k-harris
+		os=-cxux
+		;;
+	nindy960)
+		basic_machine=i960-intel
+		os=-nindy
+		;;
+	mon960)
+		basic_machine=i960-intel
+		os=-mon960
+		;;
+	nonstopux)
+		basic_machine=mips-compaq
+		os=-nonstopux
+		;;
+	np1)
+		basic_machine=np1-gould
+		;;
+	neo-tandem)
+		basic_machine=neo-tandem
+		;;
+	nse-tandem)
+		basic_machine=nse-tandem
+		;;
+	nsr-tandem)
+		basic_machine=nsr-tandem
+		;;
+	op50n-* | op60c-*)
+		basic_machine=hppa1.1-oki
+		os=-proelf
+		;;
+	openrisc | openrisc-*)
+		basic_machine=or32-unknown
+		;;
+	os400)
+		basic_machine=powerpc-ibm
+		os=-os400
+		;;
+	OSE68000 | ose68000)
+		basic_machine=m68000-ericsson
+		os=-ose
+		;;
+	os68k)
+		basic_machine=m68k-none
+		os=-os68k
+		;;
+	pa-hitachi)
+		basic_machine=hppa1.1-hitachi
+		os=-hiuxwe2
+		;;
+	paragon)
+		basic_machine=i860-intel
+		os=-osf
+		;;
+	parisc)
+		basic_machine=hppa-unknown
+		os=-linux
+		;;
+	parisc-*)
+		basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
+		os=-linux
+		;;
+	pbd)
+		basic_machine=sparc-tti
+		;;
+	pbb)
+		basic_machine=m68k-tti
+		;;
+	pc532 | pc532-*)
+		basic_machine=ns32k-pc532
+		;;
+	pc98)
+		basic_machine=i386-pc
+		;;
+	pc98-*)
+		basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium | p5 | k5 | k6 | nexgen | viac3)
+		basic_machine=i586-pc
+		;;
+	pentiumpro | p6 | 6x86 | athlon | athlon_*)
+		basic_machine=i686-pc
+		;;
+	pentiumii | pentium2 | pentiumiii | pentium3)
+		basic_machine=i686-pc
+		;;
+	pentium4)
+		basic_machine=i786-pc
+		;;
+	pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
+		basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumpro-* | p6-* | 6x86-* | athlon-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
+		basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pentium4-*)
+		basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	pn)
+		basic_machine=pn-gould
+		;;
+	power)	basic_machine=power-ibm
+		;;
+	ppc | ppcbe)	basic_machine=powerpc-unknown
+		;;
+	ppc-* | ppcbe-*)
+		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppcle | powerpclittle | ppc-le | powerpc-little)
+		basic_machine=powerpcle-unknown
+		;;
+	ppcle-* | powerpclittle-*)
+		basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64)	basic_machine=powerpc64-unknown
+		;;
+	ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ppc64le | powerpc64little | ppc64-le | powerpc64-little)
+		basic_machine=powerpc64le-unknown
+		;;
+	ppc64le-* | powerpc64little-*)
+		basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	ps2)
+		basic_machine=i386-ibm
+		;;
+	pw32)
+		basic_machine=i586-unknown
+		os=-pw32
+		;;
+	rdos)
+		basic_machine=i386-pc
+		os=-rdos
+		;;
+	rom68k)
+		basic_machine=m68k-rom68k
+		os=-coff
+		;;
+	rm[46]00)
+		basic_machine=mips-siemens
+		;;
+	rtpc | rtpc-*)
+		basic_machine=romp-ibm
+		;;
+	s390 | s390-*)
+		basic_machine=s390-ibm
+		;;
+	s390x | s390x-*)
+		basic_machine=s390x-ibm
+		;;
+	sa29200)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	sb1)
+		basic_machine=mipsisa64sb1-unknown
+		;;
+	sb1el)
+		basic_machine=mipsisa64sb1el-unknown
+		;;
+	sde)
+		basic_machine=mipsisa32-sde
+		os=-elf
+		;;
+	sei)
+		basic_machine=mips-sei
+		os=-seiux
+		;;
+	sequent)
+		basic_machine=i386-sequent
+		;;
+	sh)
+		basic_machine=sh-hitachi
+		os=-hms
+		;;
+	sh5el)
+		basic_machine=sh5le-unknown
+		;;
+	sh64)
+		basic_machine=sh64-unknown
+		;;
+	sparclite-wrs | simso-wrs)
+		basic_machine=sparclite-wrs
+		os=-vxworks
+		;;
+	sps7)
+		basic_machine=m68k-bull
+		os=-sysv2
+		;;
+	spur)
+		basic_machine=spur-unknown
+		;;
+	st2000)
+		basic_machine=m68k-tandem
+		;;
+	stratus)
+		basic_machine=i860-stratus
+		os=-sysv4
+		;;
+	strongarm-* | thumb-*)
+		basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	sun2)
+		basic_machine=m68000-sun
+		;;
+	sun2os3)
+		basic_machine=m68000-sun
+		os=-sunos3
+		;;
+	sun2os4)
+		basic_machine=m68000-sun
+		os=-sunos4
+		;;
+	sun3os3)
+		basic_machine=m68k-sun
+		os=-sunos3
+		;;
+	sun3os4)
+		basic_machine=m68k-sun
+		os=-sunos4
+		;;
+	sun4os3)
+		basic_machine=sparc-sun
+		os=-sunos3
+		;;
+	sun4os4)
+		basic_machine=sparc-sun
+		os=-sunos4
+		;;
+	sun4sol2)
+		basic_machine=sparc-sun
+		os=-solaris2
+		;;
+	sun3 | sun3-*)
+		basic_machine=m68k-sun
+		;;
+	sun4)
+		basic_machine=sparc-sun
+		;;
+	sun386 | sun386i | roadrunner)
+		basic_machine=i386-sun
+		;;
+	sv1)
+		basic_machine=sv1-cray
+		os=-unicos
+		;;
+	symmetry)
+		basic_machine=i386-sequent
+		os=-dynix
+		;;
+	t3e)
+		basic_machine=alphaev5-cray
+		os=-unicos
+		;;
+	t90)
+		basic_machine=t90-cray
+		os=-unicos
+		;;
+	tile*)
+		basic_machine=$basic_machine-unknown
+		os=-linux-gnu
+		;;
+	tx39)
+		basic_machine=mipstx39-unknown
+		;;
+	tx39el)
+		basic_machine=mipstx39el-unknown
+		;;
+	toad1)
+		basic_machine=pdp10-xkl
+		os=-tops20
+		;;
+	tower | tower-32)
+		basic_machine=m68k-ncr
+		;;
+	tpf)
+		basic_machine=s390x-ibm
+		os=-tpf
+		;;
+	udi29k)
+		basic_machine=a29k-amd
+		os=-udi
+		;;
+	ultra3)
+		basic_machine=a29k-nyu
+		os=-sym1
+		;;
+	v810 | necv810)
+		basic_machine=v810-nec
+		os=-none
+		;;
+	vaxv)
+		basic_machine=vax-dec
+		os=-sysv
+		;;
+	vms)
+		basic_machine=vax-dec
+		os=-vms
+		;;
+	vpp*|vx|vx-*)
+		basic_machine=f301-fujitsu
+		;;
+	vxworks960)
+		basic_machine=i960-wrs
+		os=-vxworks
+		;;
+	vxworks68)
+		basic_machine=m68k-wrs
+		os=-vxworks
+		;;
+	vxworks29k)
+		basic_machine=a29k-wrs
+		os=-vxworks
+		;;
+	w65*)
+		basic_machine=w65-wdc
+		os=-none
+		;;
+	w89k-*)
+		basic_machine=hppa1.1-winbond
+		os=-proelf
+		;;
+	xbox)
+		basic_machine=i686-pc
+		os=-mingw32
+		;;
+	xps | xps100)
+		basic_machine=xps100-honeywell
+		;;
+	xscale-* | xscalee[bl]-*)
+		basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
+		;;
+	ymp)
+		basic_machine=ymp-cray
+		os=-unicos
+		;;
+	z8k-*-coff)
+		basic_machine=z8k-unknown
+		os=-sim
+		;;
+	z80-*-coff)
+		basic_machine=z80-unknown
+		os=-sim
+		;;
+	none)
+		basic_machine=none-none
+		os=-none
+		;;
+
+# Here we handle the default manufacturer of certain CPU types.  It is in
+# some cases the only manufacturer, in others, it is the most popular.
+	w89k)
+		basic_machine=hppa1.1-winbond
+		;;
+	op50n)
+		basic_machine=hppa1.1-oki
+		;;
+	op60c)
+		basic_machine=hppa1.1-oki
+		;;
+	romp)
+		basic_machine=romp-ibm
+		;;
+	mmix)
+		basic_machine=mmix-knuth
+		;;
+	rs6000)
+		basic_machine=rs6000-ibm
+		;;
+	vax)
+		basic_machine=vax-dec
+		;;
+	pdp10)
+		# there are many clones, so DEC is not a safe bet
+		basic_machine=pdp10-unknown
+		;;
+	pdp11)
+		basic_machine=pdp11-dec
+		;;
+	we32k)
+		basic_machine=we32k-att
+		;;
+	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+		basic_machine=sh-unknown
+		;;
+	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
+		basic_machine=sparc-sun
+		;;
+	cydra)
+		basic_machine=cydra-cydrome
+		;;
+	orion)
+		basic_machine=orion-highlevel
+		;;
+	orion105)
+		basic_machine=clipper-highlevel
+		;;
+	mac | mpw | mac-mpw)
+		basic_machine=m68k-apple
+		;;
+	pmac | pmac-mpw)
+		basic_machine=powerpc-apple
+		;;
+	*-unknown)
+		# Make sure to match an already-canonicalized machine name.
+		;;
+	*)
+		echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
+		exit 1
+		;;
+esac
+
+# Here we canonicalize certain aliases for manufacturers.
+case $basic_machine in
+	*-digital*)
+		basic_machine=`echo $basic_machine | sed 's/digital.*/dec/'`
+		;;
+	*-commodore*)
+		basic_machine=`echo $basic_machine | sed 's/commodore.*/cbm/'`
+		;;
+	*)
+		;;
+esac
+
+# Decode manufacturer-specific aliases for certain operating systems.
+
+if [ x"$os" != x"" ]
+then
+case $os in
+	# First match some system type aliases
+	# that might get confused with valid system types.
+	# -solaris* is a basic system type, with this one exception.
+	-auroraux)
+		os=-auroraux
+		;;
+	-solaris1 | -solaris1.*)
+		os=`echo $os | sed -e 's|solaris1|sunos4|'`
+		;;
+	-solaris)
+		os=-solaris2
+		;;
+	-svr4*)
+		os=-sysv4
+		;;
+	-unixware*)
+		os=-sysv4.2uw
+		;;
+	-gnu/linux*)
+		os=`echo $os | sed -e 's|gnu/linux|linux-gnu|'`
+		;;
+	# First accept the basic system types.
+	# The portable systems comes first.
+	# Each alternative MUST END IN A *, to match a version number.
+	# -sysv* is not here because it comes later, after sysvr4.
+	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+	      | -sym* | -kopensolaris* \
+	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
+	      | -aos* | -aros* \
+	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
+	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
+	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
+	      | -openbsd* | -solidbsd* \
+	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
+	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
+	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+	      | -chorusos* | -chorusrdb* | -cegcc* \
+	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-uclibc* \
+	      | -uxpv* | -beos* | -mpeix* | -udk* \
+	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
+	      | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
+	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
+	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
+	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
+	# Remember, each alternative MUST END IN *, to match a version number.
+		;;
+	-qnx*)
+		case $basic_machine in
+		    x86-* | i*86-*)
+			;;
+		    *)
+			os=-nto$os
+			;;
+		esac
+		;;
+	-nto-qnx*)
+		;;
+	-nto*)
+		os=`echo $os | sed -e 's|nto|nto-qnx|'`
+		;;
+	-sim | -es1800* | -hms* | -xray | -os68k* | -none* | -v88r* \
+	      | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
+	      | -macos* | -mpw* | -magic* | -mmixware* | -mon960* | -lnews*)
+		;;
+	-mac*)
+		os=`echo $os | sed -e 's|mac|macos|'`
+		;;
+	-linux-dietlibc)
+		os=-linux-dietlibc
+		;;
+	-linux*)
+		os=`echo $os | sed -e 's|linux|linux-gnu|'`
+		;;
+	-sunos5*)
+		os=`echo $os | sed -e 's|sunos5|solaris2|'`
+		;;
+	-sunos6*)
+		os=`echo $os | sed -e 's|sunos6|solaris3|'`
+		;;
+	-opened*)
+		os=-openedition
+		;;
+	-os400*)
+		os=-os400
+		;;
+	-wince*)
+		os=-wince
+		;;
+	-osfrose*)
+		os=-osfrose
+		;;
+	-osf*)
+		os=-osf
+		;;
+	-utek*)
+		os=-bsd
+		;;
+	-dynix*)
+		os=-bsd
+		;;
+	-acis*)
+		os=-aos
+		;;
+	-atheos*)
+		os=-atheos
+		;;
+	-syllable*)
+		os=-syllable
+		;;
+	-386bsd)
+		os=-bsd
+		;;
+	-ctix* | -uts*)
+		os=-sysv
+		;;
+	-nova*)
+		os=-rtmk-nova
+		;;
+	-ns2 )
+		os=-nextstep2
+		;;
+	-nsk*)
+		os=-nsk
+		;;
+	# Preserve the version number of sinix5.
+	-sinix5.*)
+		os=`echo $os | sed -e 's|sinix|sysv|'`
+		;;
+	-sinix*)
+		os=-sysv4
+		;;
+	-tpf*)
+		os=-tpf
+		;;
+	-triton*)
+		os=-sysv3
+		;;
+	-oss*)
+		os=-sysv3
+		;;
+	-svr4)
+		os=-sysv4
+		;;
+	-svr3)
+		os=-sysv3
+		;;
+	-sysvr4)
+		os=-sysv4
+		;;
+	# This must come after -sysvr4.
+	-sysv*)
+		;;
+	-ose*)
+		os=-ose
+		;;
+	-es1800*)
+		os=-ose
+		;;
+	-xenix)
+		os=-xenix
+		;;
+	-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+		os=-mint
+		;;
+	-aros*)
+		os=-aros
+		;;
+	-kaos*)
+		os=-kaos
+		;;
+	-zvmoe)
+		os=-zvmoe
+		;;
+	-dicos*)
+		os=-dicos
+		;;
+	-nacl*)
+		;;
+	-none)
+		;;
+	*)
+		# Get rid of the `-' at the beginning of $os.
+		os=`echo $os | sed 's/[^-]*-//'`
+		echo Invalid configuration \`$1\': system \`$os\' not recognized 1>&2
+		exit 1
+		;;
+esac
+else
+
+# Here we handle the default operating systems that come with various machines.
+# The value should be what the vendor currently ships out the door with their
+# machine or put another way, the most popular os provided with the machine.
+
+# Note that if you're going to try to match "-MANUFACTURER" here (say,
+# "-sun"), then you have to tell the case statement up towards the top
+# that MANUFACTURER isn't an operating system.  Otherwise, code above
+# will signal an error saying that MANUFACTURER isn't an operating
+# system, and we'll never get to this point.
+
+case $basic_machine in
+	score-*)
+		os=-elf
+		;;
+	spu-*)
+		os=-elf
+		;;
+	*-acorn)
+		os=-riscix1.2
+		;;
+	arm*-rebel)
+		os=-linux
+		;;
+	arm*-semi)
+		os=-aout
+		;;
+	c4x-* | tic4x-*)
+		os=-coff
+		;;
+	tic54x-*)
+		os=-coff
+		;;
+	tic55x-*)
+		os=-coff
+		;;
+	tic6x-*)
+		os=-coff
+		;;
+	# This must come before the *-dec entry.
+	pdp10-*)
+		os=-tops20
+		;;
+	pdp11-*)
+		os=-none
+		;;
+	*-dec | vax-*)
+		os=-ultrix4.2
+		;;
+	m68*-apollo)
+		os=-domain
+		;;
+	i386-sun)
+		os=-sunos4.0.2
+		;;
+	m68000-sun)
+		os=-sunos3
+		;;
+	m68*-cisco)
+		os=-aout
+		;;
+	mep-*)
+		os=-elf
+		;;
+	mips*-cisco)
+		os=-elf
+		;;
+	mips*-*)
+		os=-elf
+		;;
+	or32-*)
+		os=-coff
+		;;
+	*-tti)	# must be before sparc entry or we get the wrong os.
+		os=-sysv3
+		;;
+	sparc-* | *-sun)
+		os=-sunos4.1.1
+		;;
+	*-be)
+		os=-beos
+		;;
+	*-haiku)
+		os=-haiku
+		;;
+	*-ibm)
+		os=-aix
+		;;
+	*-knuth)
+		os=-mmixware
+		;;
+	*-wec)
+		os=-proelf
+		;;
+	*-winbond)
+		os=-proelf
+		;;
+	*-oki)
+		os=-proelf
+		;;
+	*-hp)
+		os=-hpux
+		;;
+	*-hitachi)
+		os=-hiux
+		;;
+	i860-* | *-att | *-ncr | *-altos | *-motorola | *-convergent)
+		os=-sysv
+		;;
+	*-cbm)
+		os=-amigaos
+		;;
+	*-dg)
+		os=-dgux
+		;;
+	*-dolphin)
+		os=-sysv3
+		;;
+	m68k-ccur)
+		os=-rtu
+		;;
+	m88k-omron*)
+		os=-luna
+		;;
+	*-next )
+		os=-nextstep
+		;;
+	*-sequent)
+		os=-ptx
+		;;
+	*-crds)
+		os=-unos
+		;;
+	*-ns)
+		os=-genix
+		;;
+	i370-*)
+		os=-mvs
+		;;
+	*-next)
+		os=-nextstep3
+		;;
+	*-gould)
+		os=-sysv
+		;;
+	*-highlevel)
+		os=-bsd
+		;;
+	*-encore)
+		os=-bsd
+		;;
+	*-sgi)
+		os=-irix
+		;;
+	*-siemens)
+		os=-sysv4
+		;;
+	*-masscomp)
+		os=-rtu
+		;;
+	f30[01]-fujitsu | f700-fujitsu)
+		os=-uxpv
+		;;
+	*-rom68k)
+		os=-coff
+		;;
+	*-*bug)
+		os=-coff
+		;;
+	*-apple)
+		os=-macos
+		;;
+	*-atari*)
+		os=-mint
+		;;
+	*)
+		os=-none
+		;;
+esac
+fi
+
+# Here we handle the case where we know the os, and the CPU type, but not the
+# manufacturer.  We pick the logical manufacturer.
+vendor=unknown
+case $basic_machine in
+	*-unknown)
+		case $os in
+			-riscix*)
+				vendor=acorn
+				;;
+			-sunos*)
+				vendor=sun
+				;;
+			-cnk*|-aix*)
+				vendor=ibm
+				;;
+			-beos*)
+				vendor=be
+				;;
+			-hpux*)
+				vendor=hp
+				;;
+			-mpeix*)
+				vendor=hp
+				;;
+			-hiux*)
+				vendor=hitachi
+				;;
+			-unos*)
+				vendor=crds
+				;;
+			-dgux*)
+				vendor=dg
+				;;
+			-luna*)
+				vendor=omron
+				;;
+			-genix*)
+				vendor=ns
+				;;
+			-mvs* | -opened*)
+				vendor=ibm
+				;;
+			-os400*)
+				vendor=ibm
+				;;
+			-ptx*)
+				vendor=sequent
+				;;
+			-tpf*)
+				vendor=ibm
+				;;
+			-vxsim* | -vxworks* | -windiss*)
+				vendor=wrs
+				;;
+			-aux*)
+				vendor=apple
+				;;
+			-hms*)
+				vendor=hitachi
+				;;
+			-mpw* | -macos*)
+				vendor=apple
+				;;
+			-*mint | -mint[0-9]* | -*MiNT | -MiNT[0-9]*)
+				vendor=atari
+				;;
+			-vos*)
+				vendor=stratus
+				;;
+		esac
+		basic_machine=`echo $basic_machine | sed "s/unknown/$vendor/"`
+		;;
+esac
+
+echo $basic_machine$os
+exit
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "timestamp='"
+# time-stamp-format: "%:y-%02m-%02d"
+# time-stamp-end: "'"
+# End:
diff --git a/src/erasure-code/jerasure/jerasure/configure b/src/erasure-code/jerasure/jerasure/configure
new file mode 100755
index 00000000..c25de1ab
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/configure
@@ -0,0 +1,14766 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.68 for Jerasure 2.0.
+#
+#
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
+# Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+
+  test -n \"\${ZSH_VERSION+set}\${BASH_VERSION+set}\" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    ECHO=\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO\$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test \"X\`printf %s \$ECHO\`\" = \"X\$ECHO\" \\
+      || test \"X\`print -r -- \$ECHO\`\" = \"X\$ECHO\" ) || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  # We cannot yet assume a decent shell, so we have to provide a
+	# neutralization value for shells without unset; and this also
+	# works around shells that cannot unset nonexistent variables.
+	# Preserve -v and -x to the replacement shell.
+	BASH_ENV=/dev/null
+	ENV=/dev/null
+	(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+	export CONFIG_SHELL
+	case $- in # ((((
+	  *v*x* | *x*v* ) as_opts=-vx ;;
+	  *v* ) as_opts=-v ;;
+	  *x* ) as_opts=-x ;;
+	  * ) as_opts= ;;
+	esac
+	exec "$CONFIG_SHELL" $as_opts "$as_myself" ${1+"$@"}
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+
+test -n "$DJDIR" || exec 7<&0 &1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='Jerasure'
+PACKAGE_TARNAME='jerasure'
+PACKAGE_VERSION='2.0'
+PACKAGE_STRING='Jerasure 2.0'
+PACKAGE_BUGREPORT=''
+PACKAGE_URL=''
+
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include 
+#ifdef HAVE_SYS_TYPES_H
+# include 
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include 
+#endif
+#ifdef STDC_HEADERS
+# include 
+# include 
+#else
+# ifdef HAVE_STDLIB_H
+#  include 
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+#  include 
+# endif
+# include 
+#endif
+#ifdef HAVE_STRINGS_H
+# include 
+#endif
+#ifdef HAVE_INTTYPES_H
+# include 
+#endif
+#ifdef HAVE_STDINT_H
+# include 
+#endif
+#ifdef HAVE_UNISTD_H
+# include 
+#endif"
+
+ac_subst_vars='am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+LIBOBJS
+SIMD_FLAGS
+CPP
+OTOOL64
+OTOOL
+LIPO
+NMEDIT
+DSYMUTIL
+MANIFEST_TOOL
+RANLIB
+ac_ct_AR
+AR
+DLLTOOL
+OBJDUMP
+LN_S
+NM
+ac_ct_DUMPBIN
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+SED
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+LIBTOOL
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+am__tar
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+MAKEINFO
+AUTOHEADER
+AUTOMAKE
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+ACLOCAL
+VERSION
+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_shared
+enable_static
+with_pic
+enable_fast_install
+with_gnu_ld
+with_sysroot
+enable_libtool_lock
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
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+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
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+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
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+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
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+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
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+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
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+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
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+  as_fn_error $? "missing argument to $ac_option"
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+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    $as_echo "$as_me: WARNING: if you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used" >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures Jerasure 2.0 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/jerasure]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+Program names:
+  --program-prefix=PREFIX            prepend PREFIX to installed program names
+  --program-suffix=SUFFIX            append SUFFIX to installed program names
+  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names
+
+System types:
+  --build=BUILD     configure for building on BUILD [guessed]
+  --host=HOST       cross-compile to build programs to run on HOST [BUILD]
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of Jerasure 2.0:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-shared[=PKGS]  build shared libraries [default=yes]
+  --enable-static[=PKGS]  build static libraries [default=yes]
+  --enable-fast-install[=PKGS]
+                          optimize for fast installation [default=yes]
+  --disable-libtool-lock  avoid locking (might break parallel builds)
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --with-pic[=PKGS]       try to use only PIC/non-PIC objects [default=use
+                          both]
+  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]
+  --with-sysroot=DIR Search for dependent libraries within DIR
+                        (or the compiler's sysroot if not specified).
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L if you have libraries in a
+              nonstandard directory 
+  LIBS        libraries to pass to the linker, e.g. -l
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I if
+              you have headers in a nonstandard directory 
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+Jerasure configure 2.0
+generated by GNU Autoconf 2.68
+
+Copyright (C) 2010 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 $as_test_x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case  declares $2.
+   For example, HP-UX 11i  declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer  to  if __STDC__ is defined, since
+     exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include 
+#else
+# include 
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if eval \${$3+:} false; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_header_compiler=yes
+else
+  ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ac_header_preproc=yes
+else
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+  yes:no: )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+  no:yes:* )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_mongrel
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by Jerasure $as_me 2.0, which was
+generated by GNU Autoconf 2.68.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+am__api_version='1.11'
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+  if test -f "$ac_dir/install-sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f "$ac_dir/install.sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f "$ac_dir/shtool"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if ${ac_cv_path_install+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+  ./ | .// | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Just in case
+sleep 1
+echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[\\\"\#\$\&\'\`$am_lf]*)
+    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+  *[\\\"\#\$\&\'\`$am_lf\ \	]*)
+    as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
+esac
+
+# Do `set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+   if test "$*" = "X"; then
+      # -L didn't work.
+      set X `ls -t "$srcdir/configure" conftest.file`
+   fi
+   rm -f conftest.file
+   if test "$*" != "X $srcdir/configure conftest.file" \
+      && test "$*" != "X conftest.file $srcdir/configure"; then
+
+      # If neither matched, then we have a broken ls.  This can happen
+      # if, for instance, CONFIG_SHELL is bash and it inherits a
+      # broken ls alias from the environment.  This has actually
+      # happened.  Such a system could not be considered "sane".
+      as_fn_error $? "ls -t appears to fail.  Make sure there is not a broken
+alias in your environment" "$LINENO" 5
+   fi
+
+   test "$2" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   as_fn_error $? "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+test "$program_prefix" != NONE &&
+  program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+# expand $ac_aux_dir to an absolute path
+am_aux_dir=`cd $ac_aux_dir && pwd`
+
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --run true"; then
+  am_missing_run="$MISSING --run "
+else
+  am_missing_run=
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+
+# Installed binaries are usually stripped using `strip' when the user
+# run `make install-strip'.  However `strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the `STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+  if ${ac_cv_path_mkdir+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in mkdir gmkdir; do
+	 for ac_exec_ext in '' $ac_executable_extensions; do
+	   { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
+	   case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+	     'mkdir (GNU coreutils) '* | \
+	     'mkdir (coreutils) '* | \
+	     'mkdir (fileutils) '4.1*)
+	       ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+	       break 3;;
+	   esac
+	 done
+       done
+  done
+IFS=$as_save_IFS
+
+fi
+
+  test -d ./--version && rmdir ./--version
+  if test "${ac_cv_path_mkdir+set}" = set; then
+    MKDIR_P="$ac_cv_path_mkdir -p"
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for MKDIR_P within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    MKDIR_P="$ac_install_sh -d"
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+mkdir_p="$MKDIR_P"
+case $mkdir_p in
+  [\\/$]* | ?:[\\/]*) ;;
+  */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+esac
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AWK+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+  SET_MAKE=
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  am__isrc=' -I$(srcdir)'
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='jerasure'
+ VERSION='2.0'
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE "$PACKAGE"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define VERSION "$VERSION"
+_ACEOF
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# We need awk for the "check" target.  The system "awk" is bad on
+# some platforms.
+# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AMTAR='$${TAR-tar}'
+
+am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
+
+
+
+
+
+case `pwd` in
+  *\ * | *\	*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
+$as_echo "$as_me: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&2;} ;;
+esac
+
+
+
+macro_version='2.4.2'
+macro_revision='1.3337'
+
+
+
+
+
+
+
+
+
+
+
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+# Make sure we can run config.sub.
+$SHELL "$ac_aux_dir/config.sub" sun4 >/dev/null 2>&1 ||
+  as_fn_error $? "cannot run $SHELL $ac_aux_dir/config.sub" "$LINENO" 5
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking build system type" >&5
+$as_echo_n "checking build system type... " >&6; }
+if ${ac_cv_build+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_build_alias=$build_alias
+test "x$ac_build_alias" = x &&
+  ac_build_alias=`$SHELL "$ac_aux_dir/config.guess"`
+test "x$ac_build_alias" = x &&
+  as_fn_error $? "cannot guess build type; you must specify one" "$LINENO" 5
+ac_cv_build=`$SHELL "$ac_aux_dir/config.sub" $ac_build_alias` ||
+  as_fn_error $? "$SHELL $ac_aux_dir/config.sub $ac_build_alias failed" "$LINENO" 5
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_build" >&5
+$as_echo "$ac_cv_build" >&6; }
+case $ac_cv_build in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+esac
+build=$ac_cv_build
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_build
+shift
+build_cpu=$1
+build_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+build_os=$*
+IFS=$ac_save_IFS
+case $build_os in *\ *) build_os=`echo "$build_os" | sed 's/ /-/g'`;; esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking host system type" >&5
+$as_echo_n "checking host system type... " >&6; }
+if ${ac_cv_host+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "x$host_alias" = x; then
+  ac_cv_host=$ac_cv_build
+else
+  ac_cv_host=`$SHELL "$ac_aux_dir/config.sub" $host_alias` ||
+    as_fn_error $? "$SHELL $ac_aux_dir/config.sub $host_alias failed" "$LINENO" 5
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_host" >&5
+$as_echo "$ac_cv_host" >&6; }
+case $ac_cv_host in
+*-*-*) ;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+esac
+host=$ac_cv_host
+ac_save_IFS=$IFS; IFS='-'
+set x $ac_cv_host
+shift
+host_cpu=$1
+host_vendor=$2
+shift; shift
+# Remember, the first character of IFS is used to create $*,
+# except with old shells:
+host_os=$*
+IFS=$ac_save_IFS
+case $host_os in *\ *) host_os=`echo "$host_os" | sed 's/ /-/g'`;; esac
+
+
+# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+
+ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to print strings" >&5
+$as_echo_n "checking how to print strings... " >&6; }
+# Test print first, because it will be a builtin if present.
+if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO ""
+}
+
+case "$ECHO" in
+  printf*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: printf" >&5
+$as_echo "printf" >&6; } ;;
+  print*) { $as_echo "$as_me:${as_lineno-$LINENO}: result: print -r" >&5
+$as_echo "print -r" >&6; } ;;
+  *) { $as_echo "$as_me:${as_lineno-$LINENO}: result: cat" >&5
+$as_echo "cat" >&6; } ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+if test -z "$ac_file"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if ${ac_cv_objext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+#include 
+#include 
+#include 
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a sed that does not truncate output" >&5
+$as_echo_n "checking for a sed that does not truncate output... " >&6; }
+if ${ac_cv_path_SED+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+            ac_script=s/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/
+     for ac_i in 1 2 3 4 5 6 7; do
+       ac_script="$ac_script$as_nl$ac_script"
+     done
+     echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed
+     { ac_script=; unset ac_script;}
+     if test -z "$SED"; then
+  ac_path_SED_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_SED="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_SED" && $as_test_x "$ac_path_SED"; } || continue
+# Check for GNU ac_path_SED and select it if it is found.
+  # Check for GNU $ac_path_SED
+case `"$ac_path_SED" --version 2>&1` in
+*GNU*)
+  ac_cv_path_SED="$ac_path_SED" ac_path_SED_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo '' >> "conftest.nl"
+    "$ac_path_SED" -f conftest.sed < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_SED_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_SED="$ac_path_SED"
+      ac_path_SED_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_SED_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_SED"; then
+    as_fn_error $? "no acceptable sed could be found in \$PATH" "$LINENO" 5
+  fi
+else
+  ac_cv_path_SED=$SED
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_SED" >&5
+$as_echo "$ac_cv_path_SED" >&6; }
+ SED="$ac_cv_path_SED"
+  rm -f conftest.sed
+
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_GREP" && $as_test_x "$ac_path_GREP"; } || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_EGREP" && $as_test_x "$ac_path_EGREP"; } || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for fgrep" >&5
+$as_echo_n "checking for fgrep... " >&6; }
+if ${ac_cv_path_FGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1
+   then ac_cv_path_FGREP="$GREP -F"
+   else
+     if test -z "$FGREP"; then
+  ac_path_FGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in fgrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_FGREP="$as_dir/$ac_prog$ac_exec_ext"
+      { test -f "$ac_path_FGREP" && $as_test_x "$ac_path_FGREP"; } || continue
+# Check for GNU ac_path_FGREP and select it if it is found.
+  # Check for GNU $ac_path_FGREP
+case `"$ac_path_FGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_FGREP="$ac_path_FGREP" ac_path_FGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'FGREP' >> "conftest.nl"
+    "$ac_path_FGREP" FGREP < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_FGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_FGREP="$ac_path_FGREP"
+      ac_path_FGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_FGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_FGREP"; then
+    as_fn_error $? "no acceptable fgrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_FGREP=$FGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_FGREP" >&5
+$as_echo "$ac_cv_path_FGREP" >&6; }
+ FGREP="$ac_cv_path_FGREP"
+
+
+test -z "$GREP" && GREP=grep
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then :
+  withval=$with_gnu_ld; test "$withval" = no || with_gnu_ld=yes
+else
+  with_gnu_ld=no
+fi
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld used by $CC" >&5
+$as_echo_n "checking for ld used by $CC... " >&6; }
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [\\/]* | ?:[\\/]*)
+      re_direlt='/[^/][^/]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
+$as_echo_n "checking for GNU ld... " >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
+$as_echo_n "checking for non-GNU ld... " >&6; }
+fi
+if ${lt_cv_path_LD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 &5
+$as_echo "$LD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+test -z "$LD" && as_fn_error $? "no acceptable ld found in \$PATH" "$LINENO" 5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
+$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
+if ${lt_cv_prog_gnu_ld+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  # I'd rather use --version here, but apparently some GNU lds only accept -v.
+case `$LD -v 2>&1 &5
+$as_echo "$lt_cv_prog_gnu_ld" >&6; }
+with_gnu_ld=$lt_cv_prog_gnu_ld
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
+$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
+if ${lt_cv_path_NM+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
+$as_echo "$lt_cv_path_NM" >&6; }
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    if test -n "$ac_tool_prefix"; then
+  for ac_prog in dumpbin "link -dump"
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DUMPBIN+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DUMPBIN"; then
+  ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DUMPBIN="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DUMPBIN=$ac_cv_prog_DUMPBIN
+if test -n "$DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DUMPBIN" >&5
+$as_echo "$DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$DUMPBIN" && break
+  done
+fi
+if test -z "$DUMPBIN"; then
+  ac_ct_DUMPBIN=$DUMPBIN
+  for ac_prog in dumpbin "link -dump"
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DUMPBIN+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DUMPBIN"; then
+  ac_cv_prog_ac_ct_DUMPBIN="$ac_ct_DUMPBIN" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DUMPBIN="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
+if test -n "$ac_ct_DUMPBIN"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DUMPBIN" >&5
+$as_echo "$ac_ct_DUMPBIN" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_DUMPBIN" && break
+done
+
+  if test "x$ac_ct_DUMPBIN" = x; then
+    DUMPBIN=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DUMPBIN=$ac_ct_DUMPBIN
+  fi
+fi
+
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
+$as_echo_n "checking the name lister ($NM) interface... " >&6; }
+if ${lt_cv_nm_interface+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&5
+  (eval echo "\"\$as_me:$LINENO: output\"" >&5)
+  cat conftest.out >&5
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
+$as_echo "$lt_cv_nm_interface" >&6; }
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
+$as_echo_n "checking whether ln -s works... " >&6; }
+LN_S=$as_ln_s
+if test "$LN_S" = "ln -s"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
+$as_echo "no, using $LN_S" >&6; }
+fi
+
+# find the maximum length of command line arguments
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
+$as_echo_n "checking the maximum length of command line arguments... " >&6; }
+if ${lt_cv_sys_max_cmd_len+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+    i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  os2*)
+    # The test takes a long time on OS/2.
+    lt_cv_sys_max_cmd_len=8192
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[	 ]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+
+fi
+
+if test -n $lt_cv_sys_max_cmd_len ; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
+$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
+$as_echo "none" >&6; }
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+
+
+
+
+
+
+: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
+$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},${_lt_dummy#??}"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,b/c, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
+$as_echo "$xsi_shell" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
+$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
+$as_echo "$lt_shell_append" >&6; }
+
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+
+
+
+
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to $host format" >&5
+$as_echo_n "checking how to convert $build file names to $host format... " >&6; }
+if ${lt_cv_to_host_file_cmd+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $host in
+  *-*-mingw* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
+        ;;
+      *-*-cygwin* )
+        lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
+        ;;
+      * ) # otherwise, assume *nix
+        lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
+        ;;
+    esac
+    ;;
+  *-*-cygwin* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
+        ;;
+      *-*-cygwin* )
+        lt_cv_to_host_file_cmd=func_convert_file_noop
+        ;;
+      * ) # otherwise, assume *nix
+        lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
+        ;;
+    esac
+    ;;
+  * ) # unhandled hosts (and "normal" native builds)
+    lt_cv_to_host_file_cmd=func_convert_file_noop
+    ;;
+esac
+
+fi
+
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5
+$as_echo "$lt_cv_to_host_file_cmd" >&6; }
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5
+$as_echo_n "checking how to convert $build file names to toolchain format... " >&6; }
+if ${lt_cv_to_tool_file_cmd+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  #assume ordinary cross tools, or native build.
+lt_cv_to_tool_file_cmd=func_convert_file_noop
+case $host in
+  *-*-mingw* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
+        ;;
+    esac
+    ;;
+esac
+
+fi
+
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5
+$as_echo "$lt_cv_to_tool_file_cmd" >&6; }
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
+$as_echo_n "checking for $LD option to reload object files... " >&6; }
+if ${lt_cv_ld_reload_flag+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_reload_flag='-r'
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
+$as_echo "$lt_cv_ld_reload_flag" >&6; }
+reload_flag=$lt_cv_ld_reload_flag
+case $reload_flag in
+"" | " "*) ;;
+*) reload_flag=" $reload_flag" ;;
+esac
+reload_cmds='$LD$reload_flag -o $output$reload_objs'
+case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    if test "$GCC" != yes; then
+      reload_cmds=false
+    fi
+    ;;
+  darwin*)
+    if test "$GCC" = yes; then
+      reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
+    else
+      reload_cmds='$LD$reload_flag -o $output$reload_objs'
+    fi
+    ;;
+esac
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
+set dummy ${ac_tool_prefix}objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OBJDUMP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OBJDUMP"; then
+  ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OBJDUMP=$ac_cv_prog_OBJDUMP
+if test -n "$OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
+$as_echo "$OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OBJDUMP"; then
+  ac_ct_OBJDUMP=$OBJDUMP
+  # Extract the first word of "objdump", so it can be a program name with args.
+set dummy objdump; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OBJDUMP"; then
+  ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OBJDUMP="objdump"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
+if test -n "$ac_ct_OBJDUMP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
+$as_echo "$ac_ct_OBJDUMP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OBJDUMP" = x; then
+    OBJDUMP="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OBJDUMP=$ac_ct_OBJDUMP
+  fi
+else
+  OBJDUMP="$ac_cv_prog_OBJDUMP"
+fi
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
+$as_echo_n "checking how to recognize dependent libraries... " >&6; }
+if ${lt_cv_deplibs_check_method+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_file_magic_cmd='$MAGIC_CMD'
+lt_cv_file_magic_test_file=
+lt_cv_deplibs_check_method='unknown'
+# Need to set the preceding variable on all platforms that support
+# interlibrary dependencies.
+# 'none' -- dependencies not supported.
+# `unknown' -- same as none, but documents that we really don't know.
+# 'pass_all' -- all dependencies passed with no checks.
+# 'test_compile' -- check by making test program.
+# 'file_magic [[regex]]' -- check by looking for files in library path
+# which responds to the $file_magic_cmd with a given extended regex.
+# If you have `file' or equivalent on your system and you're not sure
+# whether `pass_all' will *always* work, you probably want this one.
+
+case $host_os in
+aix[4-9]*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+beos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+bsdi[45]*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
+  lt_cv_file_magic_cmd='/usr/bin/file -L'
+  lt_cv_file_magic_test_file=/shlib/libc.so
+  ;;
+
+cygwin*)
+  # func_win32_libid is a shell function defined in ltmain.sh
+  lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+  lt_cv_file_magic_cmd='func_win32_libid'
+  ;;
+
+mingw* | pw32*)
+  # Base MSYS/MinGW do not provide the 'file' command needed by
+  # func_win32_libid shell function, so use a weaker test based on 'objdump',
+  # unless we find 'file', for example because we are cross-compiling.
+  # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
+  if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    # Keep this pattern in sync with the one in func_win32_libid.
+    lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]'
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[3-9]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be glibc/ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd* | netbsdelf*-gnu)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
+$as_echo "$lt_cv_deplibs_check_method" >&6; }
+
+file_magic_glob=
+want_nocaseglob=no
+if test "$build" = "$host"; then
+  case $host_os in
+  mingw* | pw32*)
+    if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
+      want_nocaseglob=yes
+    else
+      file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"`
+    fi
+    ;;
+  esac
+fi
+
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DLLTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DLLTOOL"; then
+  ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DLLTOOL=$ac_cv_prog_DLLTOOL
+if test -n "$DLLTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
+$as_echo "$DLLTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DLLTOOL"; then
+  ac_ct_DLLTOOL=$DLLTOOL
+  # Extract the first word of "dlltool", so it can be a program name with args.
+set dummy dlltool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DLLTOOL"; then
+  ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DLLTOOL="dlltool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
+if test -n "$ac_ct_DLLTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
+$as_echo "$ac_ct_DLLTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_DLLTOOL" = x; then
+    DLLTOOL="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DLLTOOL=$ac_ct_DLLTOOL
+  fi
+else
+  DLLTOOL="$ac_cv_prog_DLLTOOL"
+fi
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5
+$as_echo_n "checking how to associate runtime and link libraries... " >&6; }
+if ${lt_cv_sharedlib_from_linklib_cmd+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_sharedlib_from_linklib_cmd='unknown'
+
+case $host_os in
+cygwin* | mingw* | pw32* | cegcc*)
+  # two different shell functions defined in ltmain.sh
+  # decide which to use based on capabilities of $DLLTOOL
+  case `$DLLTOOL --help 2>&1` in
+  *--identify-strict*)
+    lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
+    ;;
+  *)
+    lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
+    ;;
+  esac
+  ;;
+*)
+  # fallback: assume linklib IS sharedlib
+  lt_cv_sharedlib_from_linklib_cmd="$ECHO"
+  ;;
+esac
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5
+$as_echo "$lt_cv_sharedlib_from_linklib_cmd" >&6; }
+sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
+test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
+
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  for ac_prog in ar
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AR"; then
+  ac_cv_prog_AR="$AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_AR="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AR=$ac_cv_prog_AR
+if test -n "$AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
+$as_echo "$AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$AR" && break
+  done
+fi
+if test -z "$AR"; then
+  ac_ct_AR=$AR
+  for ac_prog in ar
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_AR+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_AR"; then
+  ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_AR="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_AR=$ac_cv_prog_ac_ct_AR
+if test -n "$ac_ct_AR"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
+$as_echo "$ac_ct_AR" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_AR" && break
+done
+
+  if test "x$ac_ct_AR" = x; then
+    AR="false"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    AR=$ac_ct_AR
+  fi
+fi
+
+: ${AR=ar}
+: ${AR_FLAGS=cru}
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5
+$as_echo_n "checking for archiver @FILE support... " >&6; }
+if ${lt_cv_ar_at_file+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ar_at_file=no
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  echo conftest.$ac_objext > conftest.lst
+      lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5'
+      { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
+  (eval $lt_ar_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+      if test "$ac_status" -eq 0; then
+	# Ensure the archiver fails upon bogus file names.
+	rm -f conftest.$ac_objext libconftest.a
+	{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
+  (eval $lt_ar_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+	if test "$ac_status" -ne 0; then
+          lt_cv_ar_at_file=@
+        fi
+      fi
+      rm -f conftest.* libconftest.a
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5
+$as_echo "$lt_cv_ar_at_file" >&6; }
+
+if test "x$lt_cv_ar_at_file" = xno; then
+  archiver_list_spec=
+else
+  archiver_list_spec=$lt_cv_ar_at_file
+fi
+
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+test -z "$STRIP" && STRIP=:
+
+
+
+
+
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
+set dummy ${ac_tool_prefix}ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$RANLIB"; then
+  ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+RANLIB=$ac_cv_prog_RANLIB
+if test -n "$RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
+$as_echo "$RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_RANLIB"; then
+  ac_ct_RANLIB=$RANLIB
+  # Extract the first word of "ranlib", so it can be a program name with args.
+set dummy ranlib; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_RANLIB+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_RANLIB"; then
+  ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_RANLIB="ranlib"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
+if test -n "$ac_ct_RANLIB"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
+$as_echo "$ac_ct_RANLIB" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_RANLIB" = x; then
+    RANLIB=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    RANLIB=$ac_ct_RANLIB
+  fi
+else
+  RANLIB="$ac_cv_prog_RANLIB"
+fi
+
+test -z "$RANLIB" && RANLIB=:
+
+
+
+
+
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
+$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
+if ${lt_cv_sys_global_symbol_pipe+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[BCDEGRST]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[BCDT]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[ABCDGISTW]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[ABCDEGRST]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[BCDEGRST]'
+  ;;
+osf*)
+  symcode='[BCDEGQRST]'
+  ;;
+solaris*)
+  symcode='[BDRT]'
+  ;;
+sco3.2v5*)
+  symcode='[DT]'
+  ;;
+sysv4.2uw2*)
+  symcode='[DT]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[ABDT]'
+  ;;
+sysv4)
+  symcode='[DFNSTU]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[ABCDGIRSTW]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\)[ ]*$/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\)[ ]*$/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK '"\
+"     {last_section=section; section=\$ 3};"\
+"     /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[	 ]\($symcode$symcode*\)[	 ][	 ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5
+  (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests.  */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+   relocations are performed -- see ld's documentation on pseudo-relocs.  */
+# define LT_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data.  */
+# define LT_DLSYM_CONST
+#else
+# define LT_DLSYM_CONST const
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+LT_DLSYM_CONST struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_globsym_save_LIBS=$LIBS
+	  lt_globsym_save_CFLAGS=$CFLAGS
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS=$lt_globsym_save_LIBS
+	  CFLAGS=$lt_globsym_save_CFLAGS
+	else
+	  echo "cannot find nm_test_func in $nlist" >&5
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&5
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
+    fi
+  else
+    echo "$progname: failed program was:" >&5
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+
+fi
+
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
+$as_echo "failed" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
+$as_echo "ok" >&6; }
+fi
+
+# Response file support.
+if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+  nm_file_list_spec='@'
+elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then
+  nm_file_list_spec='@'
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5
+$as_echo_n "checking for sysroot... " >&6; }
+
+# Check whether --with-sysroot was given.
+if test "${with_sysroot+set}" = set; then :
+  withval=$with_sysroot;
+else
+  with_sysroot=no
+fi
+
+
+lt_sysroot=
+case ${with_sysroot} in #(
+ yes)
+   if test "$GCC" = yes; then
+     lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+   fi
+   ;; #(
+ /*)
+   lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+   ;; #(
+ no|'')
+   ;; #(
+ *)
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_sysroot}" >&5
+$as_echo "${with_sysroot}" >&6; }
+   as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5
+   ;;
+esac
+
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5
+$as_echo "${lt_sysroot:-no}" >&6; }
+
+
+
+
+
+# Check whether --enable-libtool-lock was given.
+if test "${enable_libtool_lock+set}" = set; then :
+  enableval=$enable_libtool_lock;
+fi
+
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '#line '$LINENO' "configure"' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_i386"
+	    ;;
+	  ppc64-*linux*|powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  ppc*-*linux*|powerpc*-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
+$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
+if ${lt_cv_cc_needs_belf+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+     cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_cc_needs_belf=yes
+else
+  lt_cv_cc_needs_belf=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+     ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
+$as_echo "$lt_cv_cc_needs_belf" >&6; }
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*)
+        case $host in
+        i?86-*-solaris*)
+          LD="${LD-ld} -m elf_x86_64"
+          ;;
+        sparc*-*-solaris*)
+          LD="${LD-ld} -m elf64_sparc"
+          ;;
+        esac
+        # GNU ld 2.21 introduced _sol2 emulations.  Use them if available.
+        if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
+          LD="${LD-ld}_sol2"
+        fi
+        ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args.
+set dummy ${ac_tool_prefix}mt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_MANIFEST_TOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$MANIFEST_TOOL"; then
+  ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL
+if test -n "$MANIFEST_TOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5
+$as_echo "$MANIFEST_TOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_MANIFEST_TOOL"; then
+  ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL
+  # Extract the first word of "mt", so it can be a program name with args.
+set dummy mt; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_MANIFEST_TOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_MANIFEST_TOOL"; then
+  ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_MANIFEST_TOOL="mt"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL
+if test -n "$ac_ct_MANIFEST_TOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5
+$as_echo "$ac_ct_MANIFEST_TOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_MANIFEST_TOOL" = x; then
+    MANIFEST_TOOL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL
+  fi
+else
+  MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL"
+fi
+
+test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5
+$as_echo_n "checking if $MANIFEST_TOOL is a manifest tool... " >&6; }
+if ${lt_cv_path_mainfest_tool+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_path_mainfest_tool=no
+  echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5
+  $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
+  cat conftest.err >&5
+  if $GREP 'Manifest Tool' conftest.out > /dev/null; then
+    lt_cv_path_mainfest_tool=yes
+  fi
+  rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5
+$as_echo "$lt_cv_path_mainfest_tool" >&6; }
+if test "x$lt_cv_path_mainfest_tool" != xyes; then
+  MANIFEST_TOOL=:
+fi
+
+
+
+
+
+
+  case $host_os in
+    rhapsody* | darwin*)
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
+set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_DSYMUTIL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$DSYMUTIL"; then
+  ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+DSYMUTIL=$ac_cv_prog_DSYMUTIL
+if test -n "$DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
+$as_echo "$DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_DSYMUTIL"; then
+  ac_ct_DSYMUTIL=$DSYMUTIL
+  # Extract the first word of "dsymutil", so it can be a program name with args.
+set dummy dsymutil; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_DSYMUTIL"; then
+  ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
+if test -n "$ac_ct_DSYMUTIL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
+$as_echo "$ac_ct_DSYMUTIL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_DSYMUTIL" = x; then
+    DSYMUTIL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    DSYMUTIL=$ac_ct_DSYMUTIL
+  fi
+else
+  DSYMUTIL="$ac_cv_prog_DSYMUTIL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
+set dummy ${ac_tool_prefix}nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_NMEDIT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$NMEDIT"; then
+  ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+NMEDIT=$ac_cv_prog_NMEDIT
+if test -n "$NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
+$as_echo "$NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_NMEDIT"; then
+  ac_ct_NMEDIT=$NMEDIT
+  # Extract the first word of "nmedit", so it can be a program name with args.
+set dummy nmedit; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_NMEDIT"; then
+  ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_NMEDIT="nmedit"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
+if test -n "$ac_ct_NMEDIT"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
+$as_echo "$ac_ct_NMEDIT" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_NMEDIT" = x; then
+    NMEDIT=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    NMEDIT=$ac_ct_NMEDIT
+  fi
+else
+  NMEDIT="$ac_cv_prog_NMEDIT"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
+set dummy ${ac_tool_prefix}lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_LIPO+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$LIPO"; then
+  ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+LIPO=$ac_cv_prog_LIPO
+if test -n "$LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
+$as_echo "$LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_LIPO"; then
+  ac_ct_LIPO=$LIPO
+  # Extract the first word of "lipo", so it can be a program name with args.
+set dummy lipo; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_LIPO+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_LIPO"; then
+  ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_LIPO="lipo"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
+if test -n "$ac_ct_LIPO"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
+$as_echo "$ac_ct_LIPO" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_LIPO" = x; then
+    LIPO=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    LIPO=$ac_ct_LIPO
+  fi
+else
+  LIPO="$ac_cv_prog_LIPO"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL"; then
+  ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL=$ac_cv_prog_OTOOL
+if test -n "$OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
+$as_echo "$OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL"; then
+  ac_ct_OTOOL=$OTOOL
+  # Extract the first word of "otool", so it can be a program name with args.
+set dummy otool; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OTOOL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL"; then
+  ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OTOOL="otool"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
+if test -n "$ac_ct_OTOOL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
+$as_echo "$ac_ct_OTOOL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL" = x; then
+    OTOOL=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL=$ac_ct_OTOOL
+  fi
+else
+  OTOOL="$ac_cv_prog_OTOOL"
+fi
+
+    if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
+set dummy ${ac_tool_prefix}otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_OTOOL64+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$OTOOL64"; then
+  ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+OTOOL64=$ac_cv_prog_OTOOL64
+if test -n "$OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
+$as_echo "$OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_OTOOL64"; then
+  ac_ct_OTOOL64=$OTOOL64
+  # Extract the first word of "otool64", so it can be a program name with args.
+set dummy otool64; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_OTOOL64"; then
+  ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_OTOOL64="otool64"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
+if test -n "$ac_ct_OTOOL64"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
+$as_echo "$ac_ct_OTOOL64" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_OTOOL64" = x; then
+    OTOOL64=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    OTOOL64=$ac_ct_OTOOL64
+  fi
+else
+  OTOOL64="$ac_cv_prog_OTOOL64"
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
+$as_echo_n "checking for -single_module linker flag... " >&6; }
+if ${lt_cv_apple_cc_single_mod+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&5
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	# If there is a non-empty error log, and "single_module"
+	# appears in it, assume the flag caused a linker warning
+        if test -s conftest.err && $GREP single_module conftest.err; then
+	  cat conftest.err >&5
+	# Otherwise, if the output was created with a 0 exit code from
+	# the compiler, it worked.
+	elif test -f libconftest.dylib && test $_lt_result -eq 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&5
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
+$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
+$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
+if ${lt_cv_ld_exported_symbols_list+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_ld_exported_symbols_list=yes
+else
+  lt_cv_ld_exported_symbols_list=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+	LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
+$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5
+$as_echo_n "checking for -force_load linker flag... " >&6; }
+if ${lt_cv_ld_force_load+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
+      echo "$AR cru libconftest.a conftest.o" >&5
+      $AR cru libconftest.a conftest.o 2>&5
+      echo "$RANLIB libconftest.a" >&5
+      $RANLIB libconftest.a 2>&5
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -s conftest.err && $GREP force_load conftest.err; then
+	cat conftest.err >&5
+      elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&5
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5
+$as_echo "$lt_cv_ld_force_load" >&6; }
+    case $host_os in
+    rhapsody* | darwin1.[012])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    darwin*) # darwin 5.x on
+      # if running on 10.5 or later, the deployment target defaults
+      # to the OS version, if on x86, and 10.4, the deployment
+      # target defaults to 10.4. Don't you love it?
+      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+	10.0,*86*-darwin8*|10.0,*-darwin[91]*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+	10.[012]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+	10.*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+      esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if ${ac_cv_prog_CPP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer  to  if __STDC__ is defined, since
+  #  exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include 
+#else
+# include 
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer  to  if __STDC__ is defined, since
+  #  exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include 
+#else
+# include 
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if ${ac_cv_header_stdc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+#include 
+#include 
+#include 
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+#include 
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+for ac_header in dlfcn.h
+do :
+  ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
+"
+if test "x$ac_cv_header_dlfcn_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DLFCN_H 1
+_ACEOF
+
+fi
+
+done
+
+
+
+
+
+# Set options
+
+
+
+        enable_dlopen=no
+
+
+  enable_win32_dll=no
+
+
+            # Check whether --enable-shared was given.
+if test "${enable_shared+set}" = set; then :
+  enableval=$enable_shared; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_shared=yes
+fi
+
+
+
+
+
+
+
+
+
+  # Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+  enableval=$enable_static; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_static=yes
+fi
+
+
+
+
+
+
+
+
+
+
+# Check whether --with-pic was given.
+if test "${with_pic+set}" = set; then :
+  withval=$with_pic; lt_p=${PACKAGE-default}
+    case $withval in
+    yes|no) pic_mode=$withval ;;
+    *)
+      pic_mode=default
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for lt_pkg in $withval; do
+	IFS="$lt_save_ifs"
+	if test "X$lt_pkg" = "X$lt_p"; then
+	  pic_mode=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  pic_mode=default
+fi
+
+
+test -z "$pic_mode" && pic_mode=default
+
+
+
+
+
+
+
+  # Check whether --enable-fast-install was given.
+if test "${enable_fast_install+set}" = set; then :
+  enableval=$enable_fast_install; p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac
+else
+  enable_fast_install=yes
+fi
+
+
+
+
+
+
+
+
+
+
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+test -z "$LN_S" && LN_S="ln -s"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
+$as_echo_n "checking for objdir... " >&6; }
+if ${lt_cv_objdir+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
+$as_echo "$lt_cv_objdir" >&6; }
+objdir=$lt_cv_objdir
+
+
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define LT_OBJDIR "$lt_cv_objdir/"
+_ACEOF
+
+
+
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+for cc_temp in $compiler""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
+$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/${ac_tool_prefix}file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+
+
+
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
+$as_echo_n "checking for file... " >&6; }
+if ${lt_cv_path_MAGIC_CMD+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $MAGIC_CMD in
+[\\/*] |  ?:[\\/]*)
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/file; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/file"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac
+fi
+
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
+$as_echo "$MAGIC_CMD" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  else
+    MAGIC_CMD=:
+  fi
+fi
+
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+
+lt_save_CC="$CC"
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+objext=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+
+
+
+
+
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+
+lt_prog_compiler_no_builtin_flag=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;;
+  *)
+    lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;;
+  esac
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
+$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
+if ${lt_cv_prog_compiler_rtti_exceptions+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_rtti_exceptions=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="-fno-rtti -fno-exceptions"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_rtti_exceptions=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
+$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
+
+if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
+    lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
+else
+    :
+fi
+
+fi
+
+
+
+
+
+
+  lt_prog_compiler_wl=
+lt_prog_compiler_pic=
+lt_prog_compiler_static=
+
+
+  if test "$GCC" = yes; then
+    lt_prog_compiler_wl='-Wl,'
+    lt_prog_compiler_static='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            lt_prog_compiler_pic='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      lt_prog_compiler_pic='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      lt_prog_compiler_static=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[3-9]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      lt_prog_compiler_can_build_shared=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	lt_prog_compiler_pic=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      lt_prog_compiler_pic='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      lt_prog_compiler_wl='-Xlinker '
+      if test -n "$lt_prog_compiler_pic"; then
+        lt_prog_compiler_pic="-Xcompiler $lt_prog_compiler_pic"
+      fi
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      lt_prog_compiler_wl='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	lt_prog_compiler_static='-Bstatic'
+      else
+	lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      lt_prog_compiler_pic='-DDLL_EXPORT'
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	lt_prog_compiler_pic='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      lt_prog_compiler_static='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      lt_prog_compiler_wl='-Wl,'
+      # PIC (with -KPIC) is the default.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-KPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fPIC'
+	lt_prog_compiler_static='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='--shared'
+	lt_prog_compiler_static='--static'
+	;;
+      nagfor*)
+	# NAG Fortran compiler
+	lt_prog_compiler_wl='-Wl,-Wl,,'
+	lt_prog_compiler_pic='-PIC'
+	lt_prog_compiler_static='-Bstatic'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-fpic'
+	lt_prog_compiler_static='-Bstatic'
+        ;;
+      ccc*)
+        lt_prog_compiler_wl='-Wl,'
+        # All Alpha code is PIC.
+        lt_prog_compiler_static='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	lt_prog_compiler_wl='-Wl,'
+	lt_prog_compiler_pic='-qpic'
+	lt_prog_compiler_static='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl=''
+	  ;;
+	*Sun\ F* | *Sun*Fortran*)
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl='-Qoption ld '
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  lt_prog_compiler_pic='-KPIC'
+	  lt_prog_compiler_static='-Bstatic'
+	  lt_prog_compiler_wl='-Wl,'
+	  ;;
+        *Intel*\ [CF]*Compiler*)
+	  lt_prog_compiler_wl='-Wl,'
+	  lt_prog_compiler_pic='-fPIC'
+	  lt_prog_compiler_static='-static'
+	  ;;
+	*Portland\ Group*)
+	  lt_prog_compiler_wl='-Wl,'
+	  lt_prog_compiler_pic='-fpic'
+	  lt_prog_compiler_static='-Bstatic'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      lt_prog_compiler_pic='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      lt_prog_compiler_wl='-Wl,'
+      # All OSF/1 code is PIC.
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    rdos*)
+      lt_prog_compiler_static='-non_shared'
+      ;;
+
+    solaris*)
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+	lt_prog_compiler_wl='-Qoption ld ';;
+      *)
+	lt_prog_compiler_wl='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      lt_prog_compiler_wl='-Qoption ld '
+      lt_prog_compiler_pic='-PIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	lt_prog_compiler_pic='-Kconform_pic'
+	lt_prog_compiler_static='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_pic='-KPIC'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    unicos*)
+      lt_prog_compiler_wl='-Wl,'
+      lt_prog_compiler_can_build_shared=no
+      ;;
+
+    uts4*)
+      lt_prog_compiler_pic='-pic'
+      lt_prog_compiler_static='-Bstatic'
+      ;;
+
+    *)
+      lt_prog_compiler_can_build_shared=no
+      ;;
+    esac
+  fi
+
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    lt_prog_compiler_pic=
+    ;;
+  *)
+    lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
+    ;;
+esac
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
+$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
+if ${lt_cv_prog_compiler_pic+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_pic=$lt_prog_compiler_pic
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic" >&5
+$as_echo "$lt_cv_prog_compiler_pic" >&6; }
+lt_prog_compiler_pic=$lt_cv_prog_compiler_pic
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$lt_prog_compiler_pic"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
+$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
+if ${lt_cv_prog_compiler_pic_works+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_pic_works=no
+   ac_outfile=conftest.$ac_objext
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_pic_works=yes
+     fi
+   fi
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
+$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
+    case $lt_prog_compiler_pic in
+     "" | " "*) ;;
+     *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
+     esac
+else
+    lt_prog_compiler_pic=
+     lt_prog_compiler_can_build_shared=no
+fi
+
+fi
+
+
+
+
+
+
+
+
+
+
+
+#
+# Check to make sure the static flag actually works.
+#
+wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
+$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
+if ${lt_cv_prog_compiler_static_works+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_static_works=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler_static_works=yes
+       fi
+     else
+       lt_cv_prog_compiler_static_works=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
+$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
+
+if test x"$lt_cv_prog_compiler_static_works" = xyes; then
+    :
+else
+    lt_prog_compiler_static=
+fi
+
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if ${lt_cv_prog_compiler_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
+$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
+if ${lt_cv_prog_compiler_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler_c_o=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&5
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       lt_cv_prog_compiler_c_o=yes
+     fi
+   fi
+   chmod u+w . 2>&5
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_c_o" >&5
+$as_echo "$lt_cv_prog_compiler_c_o" >&6; }
+
+
+
+
+hard_links="nottested"
+if test "$lt_cv_prog_compiler_c_o" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if we can lock with hard links" >&5
+$as_echo_n "checking if we can lock with hard links... " >&6; }
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $hard_links" >&5
+$as_echo "$hard_links" >&6; }
+  if test "$hard_links" = no; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&5
+$as_echo "$as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2;}
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+
+
+
+
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $compiler linker ($LD) supports shared libraries" >&5
+$as_echo_n "checking whether the $compiler linker ($LD) supports shared libraries... " >&6; }
+
+  runpath_var=
+  allow_undefined_flag=
+  always_export_symbols=no
+  archive_cmds=
+  archive_expsym_cmds=
+  compiler_needs_object=no
+  enable_shared_with_static_runtimes=no
+  export_dynamic_flag_spec=
+  export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  hardcode_automatic=no
+  hardcode_direct=no
+  hardcode_direct_absolute=no
+  hardcode_libdir_flag_spec=
+  hardcode_libdir_separator=
+  hardcode_minus_L=no
+  hardcode_shlibpath_var=unsupported
+  inherit_rpath=no
+  link_all_deplibs=unknown
+  module_cmds=
+  module_expsym_cmds=
+  old_archive_from_new_cmds=
+  old_archive_from_expsyms_cmds=
+  thread_safe_flag_spec=
+  whole_archive_flag_spec=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  include_expsyms=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  exclude_expsyms='_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*'
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  linux* | k*bsd*-gnu | gnu*)
+    link_all_deplibs=no
+    ;;
+  esac
+
+  ld_shlibs=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[2-9]*) ;;
+	  *\ \(GNU\ Binutils\)\ [3-9]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+    export_dynamic_flag_spec='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      whole_archive_flag_spec="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      whole_archive_flag_spec=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [01].* | *\ 2.[0-9].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	allow_undefined_flag=unsupported
+	# Joseph Beckenbach  says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	archive_cmds='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+      # as there is no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      export_dynamic_flag_spec='${wl}--export-all-symbols'
+      allow_undefined_flag=unsupported
+      always_export_symbols=no
+      enable_shared_with_static_runtimes=yes
+      export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1 DATA/;s/^.*[ ]__nm__\([^ ]*\)[ ][^ ]*/\1 DATA/;/^I[ ]/d;/^[AITW][ ]/s/.* //'\'' | sort | uniq > $export_symbols'
+      exclude_expsyms='[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname'
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    haiku*)
+      archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      link_all_deplibs=yes
+      ;;
+
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      export_dynamic_flag_spec='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=' $pic_flag'
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  whole_archive_flag_spec=
+	  tmp_sharedflag='--shared' ;;
+	xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  whole_archive_flag_spec='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  whole_archive_flag_spec='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  compiler_needs_object=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  whole_archive_flag_spec='--whole-archive$convenience --no-whole-archive'
+	  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+	  archive_cmds='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    archive_expsym_cmds='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        ld_shlibs=no
+      fi
+      ;;
+
+    netbsd* | netbsdelf*-gnu)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+	ld_shlibs=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+	    archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    ld_shlibs=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	ld_shlibs=no
+      fi
+      ;;
+    esac
+
+    if test "$ld_shlibs" = no; then
+      runpath_var=
+      hardcode_libdir_flag_spec=
+      export_dynamic_flag_spec=
+      whole_archive_flag_spec=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      allow_undefined_flag=unsupported
+      always_export_symbols=yes
+      archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	hardcode_direct=unsupported
+      fi
+      ;;
+
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      archive_cmds=''
+      hardcode_direct=yes
+      hardcode_direct_absolute=yes
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      file_list_spec='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[012]|aix4.[012].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  hardcode_direct=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  hardcode_minus_L=yes
+	  hardcode_libdir_flag_spec='-L$libdir'
+	  hardcode_libdir_separator=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+	link_all_deplibs=no
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      export_dynamic_flag_spec='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      always_export_symbols=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	allow_undefined_flag='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        if test "${lt_cv_aix_libpath+set}" = set; then
+  aix_libpath=$lt_cv_aix_libpath
+else
+  if ${lt_cv_aix_libpath_+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+  lt_aix_libpath_sed='
+      /Import File Strings/,/^$/ {
+	  /^0/ {
+	      s/^0  *\([^ ]*\) *$/\1/
+	      p
+	  }
+      }'
+  lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  # Check for a 64-bit object if we didn't find anything.
+  if test -z "$lt_cv_aix_libpath_"; then
+    lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  if test -z "$lt_cv_aix_libpath_"; then
+    lt_cv_aix_libpath_="/usr/lib:/lib"
+  fi
+
+fi
+
+  aix_libpath=$lt_cv_aix_libpath_
+fi
+
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+	  allow_undefined_flag="-z nodefs"
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 if test "${lt_cv_aix_libpath+set}" = set; then
+  aix_libpath=$lt_cv_aix_libpath
+else
+  if ${lt_cv_aix_libpath_+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+
+  lt_aix_libpath_sed='
+      /Import File Strings/,/^$/ {
+	  /^0/ {
+	      s/^0  *\([^ ]*\) *$/\1/
+	      p
+	  }
+      }'
+  lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  # Check for a 64-bit object if we didn't find anything.
+  if test -z "$lt_cv_aix_libpath_"; then
+    lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+  if test -z "$lt_cv_aix_libpath_"; then
+    lt_cv_aix_libpath_="/usr/lib:/lib"
+  fi
+
+fi
+
+  aix_libpath=$lt_cv_aix_libpath_
+fi
+
+	 hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  no_undefined_flag=' ${wl}-bernotok'
+	  allow_undefined_flag=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    whole_archive_flag_spec='$convenience'
+	  fi
+	  archive_cmds_need_lc=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            archive_expsym_cmds=''
+        ;;
+      m68k)
+            archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_minus_L=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[45]*)
+      export_dynamic_flag_spec=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      case $cc_basename in
+      cl*)
+	# Native MSVC
+	hardcode_libdir_flag_spec=' '
+	allow_undefined_flag=unsupported
+	always_export_symbols=yes
+	file_list_spec='@'
+	# Tell ltmain to make .lib files, not .a files.
+	libext=lib
+	# Tell ltmain to make .dll files, not .so files.
+	shrext_cmds=".dll"
+	# FIXME: Setting linknames here is a bad hack.
+	archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+	archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	    sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+	  else
+	    sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+	  fi~
+	  $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+	  linknames='
+	# The linker will not automatically build a static lib if we build a DLL.
+	# _LT_TAGVAR(old_archive_from_new_cmds, )='true'
+	enable_shared_with_static_runtimes=yes
+	exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+	export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
+	# Don't use ranlib
+	old_postinstall_cmds='chmod 644 $oldlib'
+	postlink_cmds='lt_outputfile="@OUTPUT@"~
+	  lt_tool_outputfile="@TOOL_OUTPUT@"~
+	  case $lt_outputfile in
+	    *.exe|*.EXE) ;;
+	    *)
+	      lt_outputfile="$lt_outputfile.exe"
+	      lt_tool_outputfile="$lt_tool_outputfile.exe"
+	      ;;
+	  esac~
+	  if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+	    $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+	    $RM "$lt_outputfile.manifest";
+	  fi'
+	;;
+      *)
+	# Assume MSVC wrapper
+	hardcode_libdir_flag_spec=' '
+	allow_undefined_flag=unsupported
+	# Tell ltmain to make .lib files, not .a files.
+	libext=lib
+	# Tell ltmain to make .dll files, not .so files.
+	shrext_cmds=".dll"
+	# FIXME: Setting linknames here is a bad hack.
+	archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+	# The linker will automatically build a .lib file if we build a DLL.
+	old_archive_from_new_cmds='true'
+	# FIXME: Should let the user specify the lib program.
+	old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
+	enable_shared_with_static_runtimes=yes
+	;;
+      esac
+      ;;
+
+    darwin* | rhapsody*)
+
+
+  archive_cmds_need_lc=no
+  hardcode_direct=no
+  hardcode_automatic=yes
+  hardcode_shlibpath_var=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    whole_archive_flag_spec='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+
+  else
+    whole_archive_flag_spec=''
+  fi
+  link_all_deplibs=yes
+  allow_undefined_flag="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+
+  else
+  ld_shlibs=no
+  fi
+
+      ;;
+
+    dgux*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	archive_cmds='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      export_dynamic_flag_spec='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_separator=:
+	hardcode_direct=yes
+	hardcode_direct_absolute=yes
+	export_dynamic_flag_spec='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	hardcode_minus_L=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5
+$as_echo_n "checking if $CC understands -b... " >&6; }
+if ${lt_cv_prog_compiler__b+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_prog_compiler__b=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS -b"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&5
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         lt_cv_prog_compiler__b=yes
+       fi
+     else
+       lt_cv_prog_compiler__b=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5
+$as_echo "$lt_cv_prog_compiler__b" >&6; }
+
+if test x"$lt_cv_prog_compiler__b" = xyes; then
+    archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+else
+    archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+fi
+
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+	hardcode_libdir_separator=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  hardcode_direct=no
+	  hardcode_shlibpath_var=no
+	  ;;
+	*)
+	  hardcode_direct=yes
+	  hardcode_direct_absolute=yes
+	  export_dynamic_flag_spec='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  hardcode_minus_L=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+	# This should be the same for all languages, so no per-tag cache variable.
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5
+$as_echo_n "checking whether the $host_os linker accepts -exported_symbol... " >&6; }
+if ${lt_cv_irix_exported_symbol+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  save_LDFLAGS="$LDFLAGS"
+	   LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+	   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int foo (void) { return 0; }
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  lt_cv_irix_exported_symbol=yes
+else
+  lt_cv_irix_exported_symbol=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+           LDFLAGS="$save_LDFLAGS"
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5
+$as_echo "$lt_cv_irix_exported_symbol" >&6; }
+	if test "$lt_cv_irix_exported_symbol" = yes; then
+          archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+	fi
+      else
+	archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      inherit_rpath=yes
+      link_all_deplibs=yes
+      ;;
+
+    netbsd* | netbsdelf*-gnu)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    newsos6)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_shlibpath_var=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	hardcode_direct=yes
+	hardcode_shlibpath_var=no
+	hardcode_direct_absolute=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	  export_dynamic_flag_spec='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+	     archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     hardcode_libdir_flag_spec='-R$libdir'
+	     ;;
+	   *)
+	     archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	ld_shlibs=no
+      fi
+      ;;
+
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      allow_undefined_flag=unsupported
+      archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+	allow_undefined_flag=' -expect_unresolved \*'
+	archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      archive_cmds_need_lc='no'
+      hardcode_libdir_separator=:
+      ;;
+
+    solaris*)
+      no_undefined_flag=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	archive_cmds='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_shlibpath_var=no
+      case $host_os in
+      solaris2.[0-5] | solaris2.[0-5].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      link_all_deplibs=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  reload_cmds='$CC -r -o $output$reload_objs'
+	  hardcode_direct=no
+        ;;
+	motorola)
+	  archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      hardcode_shlibpath_var=no
+      ;;
+
+    sysv4.3*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_shlibpath_var=no
+      export_dynamic_flag_spec='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	hardcode_shlibpath_var=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	ld_shlibs=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      no_undefined_flag='${wl}-z,text'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      no_undefined_flag='${wl}-z,text'
+      allow_undefined_flag='${wl}-z,nodefs'
+      archive_cmds_need_lc=no
+      hardcode_shlibpath_var=no
+      hardcode_libdir_flag_spec='${wl}-R,$libdir'
+      hardcode_libdir_separator=':'
+      link_all_deplibs=yes
+      export_dynamic_flag_spec='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_shlibpath_var=no
+      ;;
+
+    *)
+      ld_shlibs=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	export_dynamic_flag_spec='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
+$as_echo "$ld_shlibs" >&6; }
+test "$ld_shlibs" = no && can_build_shared=no
+
+with_gnu_ld=$with_gnu_ld
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$archive_cmds_need_lc" in
+x|xyes)
+  # Assume -lc should be added
+  archive_cmds_need_lc=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $archive_cmds in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
+$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
+if ${lt_cv_archive_cmds_need_lc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  $RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$lt_prog_compiler_wl
+	  pic_flag=$lt_prog_compiler_pic
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$allow_undefined_flag
+	  allow_undefined_flag=
+	  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
+  (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+	  then
+	    lt_cv_archive_cmds_need_lc=no
+	  else
+	    lt_cv_archive_cmds_need_lc=yes
+	  fi
+	  allow_undefined_flag=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_archive_cmds_need_lc" >&5
+$as_echo "$lt_cv_archive_cmds_need_lc" >&6; }
+      archive_cmds_need_lc=$lt_cv_archive_cmds_need_lc
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+
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+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
+$as_echo_n "checking dynamic linker characteristics... " >&6; }
+
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([A-Za-z]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[lt_foo]++; }
+  if (lt_freq[lt_foo] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([A-Za-z]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[4-9]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[01] | aix4.[01].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib.so
+      # instead of lib.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[45]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$cc_basename in
+  yes,*)
+    # gcc
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    dynamic_linker='Win32 ld.exe'
+    ;;
+
+  *,cl*)
+    # Native MSVC
+    libname_spec='$name'
+    soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+    library_names_spec='${libname}.dll.lib'
+
+    case $build_os in
+    mingw*)
+      sys_lib_search_path_spec=
+      lt_save_ifs=$IFS
+      IFS=';'
+      for lt_path in $LIB
+      do
+        IFS=$lt_save_ifs
+        # Let DOS variable expansion print the short 8.3 style file name.
+        lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
+        sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
+      done
+      IFS=$lt_save_ifs
+      # Convert to MSYS style.
+      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
+      ;;
+    cygwin*)
+      # Convert to unix form, then to dos form, then back to unix form
+      # but this time dos style (no spaces!) so that the unix form looks
+      # like /cygdrive/c/PROGRA~1:/cygdr...
+      sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
+      sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
+      sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+      ;;
+    *)
+      sys_lib_search_path_spec="$LIB"
+      if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then
+        # It is most probably a Windows format PATH.
+        sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+      else
+        sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+      fi
+      # FIXME: find the short name or the path components, as spaces are
+      # common. (e.g. "Program Files" -> "PROGRA~1")
+      ;;
+    esac
+
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+    dynamic_linker='Win32 link.exe'
+    ;;
+
+  *)
+    # Assume MSVC wrapper
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    dynamic_linker='Win32 ld.exe'
+    ;;
+  esac
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[23].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[01]* | freebsdelf3.[01]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
+  freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+gnu*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+haiku*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[3-9]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux # correct to gnu/linux during the next big refactor
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be glibc/ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  if ${lt_cv_shlibpath_overrides_runpath+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
+	 LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  if  ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
+  lt_cv_shlibpath_overrides_runpath=yes
+fi
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+
+fi
+
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsdelf*-gnu)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='NetBSD ld.elf_so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[89] | openbsd2.[89].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux # correct to gnu/linux during the next big refactor
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
+$as_echo "$dynamic_linker" >&6; }
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+
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+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
+$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
+hardcode_action=
+if test -n "$hardcode_libdir_flag_spec" ||
+   test -n "$runpath_var" ||
+   test "X$hardcode_automatic" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$hardcode_direct" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
+     test "$hardcode_minus_L" != no; then
+    # Linking always hardcodes the temporary library directory.
+    hardcode_action=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    hardcode_action=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  hardcode_action=unsupported
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
+$as_echo "$hardcode_action" >&6; }
+
+if test "$hardcode_action" = relink ||
+   test "$inherit_rpath" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+
+
+
+
+
+
+  if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if ${ac_cv_lib_dl_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+
+fi
+
+    ;;
+
+  *)
+    ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
+if test "x$ac_cv_func_shl_load" = xyes; then :
+  lt_cv_dlopen="shl_load"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
+$as_echo_n "checking for shl_load in -ldld... " >&6; }
+if ${ac_cv_lib_dld_shl_load+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char shl_load ();
+int
+main ()
+{
+return shl_load ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_shl_load=yes
+else
+  ac_cv_lib_dld_shl_load=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
+$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
+if test "x$ac_cv_lib_dld_shl_load" = xyes; then :
+  lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
+else
+  ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
+if test "x$ac_cv_func_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
+$as_echo_n "checking for dlopen in -ldl... " >&6; }
+if ${ac_cv_lib_dl_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dl_dlopen=yes
+else
+  ac_cv_lib_dl_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
+$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
+if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
+$as_echo_n "checking for dlopen in -lsvld... " >&6; }
+if ${ac_cv_lib_svld_dlopen+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsvld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_svld_dlopen=yes
+else
+  ac_cv_lib_svld_dlopen=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
+$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
+if test "x$ac_cv_lib_svld_dlopen" = xyes; then :
+  lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
+$as_echo_n "checking for dld_link in -ldld... " >&6; }
+if ${ac_cv_lib_dld_dld_link+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldld  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dld_link ();
+int
+main ()
+{
+return dld_link ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_dld_dld_link=yes
+else
+  ac_cv_lib_dld_dld_link=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
+$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
+if test "x$ac_cv_lib_dld_dld_link" = xyes; then :
+  lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
+$as_echo_n "checking whether a program can dlopen itself... " >&6; }
+if ${lt_cv_dlopen_self+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line $LINENO "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include 
+#endif
+
+#include 
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+int fnord () __attribute__((visibility("default")));
+#endif
+
+int fnord () { return 42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
+$as_echo "$lt_cv_dlopen_self" >&6; }
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
+$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
+if ${lt_cv_dlopen_self_static+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  	  if test "$cross_compiling" = yes; then :
+  lt_cv_dlopen_self_static=cross
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+#line $LINENO "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include 
+#endif
+
+#include 
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+int fnord () __attribute__((visibility("default")));
+#endif
+
+int fnord () { return 42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}
+_LT_EOF
+  if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&5 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
+      x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
+    esac
+  else :
+    # compilation failed
+    lt_cv_dlopen_self_static=no
+  fi
+fi
+rm -fr conftest*
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
+$as_echo "$lt_cv_dlopen_self_static" >&6; }
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+striplib=
+old_striplib=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
+$as_echo_n "checking whether stripping libraries is possible... " >&6; }
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+    else
+      { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    fi
+    ;;
+  *)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+    ;;
+  esac
+fi
+
+
+
+
+
+
+
+
+
+
+
+
+  # Report which library types will actually be built
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking if libtool supports shared libraries" >&5
+$as_echo_n "checking if libtool supports shared libraries... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $can_build_shared" >&5
+$as_echo "$can_build_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build shared libraries" >&5
+$as_echo_n "checking whether to build shared libraries... " >&6; }
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[4-9]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_shared" >&5
+$as_echo "$enable_shared" >&6; }
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to build static libraries" >&5
+$as_echo_n "checking whether to build static libraries... " >&6; }
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_static" >&5
+$as_echo "$enable_static" >&6; }
+
+
+
+
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+CC="$lt_save_CC"
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        ac_config_commands="$ac_config_commands libtool"
+
+
+
+
+# Only expand once:
+
+ # libtool
+
+ac_config_headers="$ac_config_headers include/config.h"
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+#include 
+#include 
+#include 
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+# Check for gf_complete headers
+for ac_header in gf_complete.h gf_general.h gf_int.h gf_method.h gf_rand.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for gf_init_easy in -lgf_complete" >&5
+$as_echo_n "checking for gf_init_easy in -lgf_complete... " >&6; }
+if ${ac_cv_lib_gf_complete_gf_init_easy+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lgf_complete  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char gf_init_easy ();
+int
+main ()
+{
+return gf_init_easy ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_gf_complete_gf_init_easy=yes
+else
+  ac_cv_lib_gf_complete_gf_init_easy=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_gf_complete_gf_init_easy" >&5
+$as_echo "$ac_cv_lib_gf_complete_gf_init_easy" >&6; }
+if test "x$ac_cv_lib_gf_complete_gf_init_easy" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBGF_COMPLETE 1
+_ACEOF
+
+  LIBS="-lgf_complete $LIBS"
+
+else
+
+              echo "Error! You need to have gf_complete installed."
+              echo "gf_complete is available from http://web.eecs.utk.edu/~plank/plank/papers/CS-13-703.html"
+              exit -1
+
+fi
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86 cpuid  output" >&5
+$as_echo_n "checking for x86 cpuid  output... " >&6; }
+if ${ax_cv_gcc_x86_cpuid_+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "$cross_compiling" = yes; then :
+  ax_cv_gcc_x86_cpuid_=unknown
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+int
+main ()
+{
+
+     int op = , eax, ebx, ecx, edx;
+     FILE *f;
+      __asm__("cpuid"
+        : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+        : "a" (op));
+     f = fopen("conftest_cpuid", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
+     fclose(f);
+     return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ax_cv_gcc_x86_cpuid_=`cat conftest_cpuid`; rm -f conftest_cpuid
+else
+  ax_cv_gcc_x86_cpuid_=unknown; rm -f conftest_cpuid
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_gcc_x86_cpuid_" >&5
+$as_echo "$ax_cv_gcc_x86_cpuid_" >&6; }
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86-AVX xgetbv  output" >&5
+$as_echo_n "checking for x86-AVX xgetbv  output... " >&6; }
+if ${ax_cv_gcc_x86_avx_xgetbv_+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "$cross_compiling" = yes; then :
+  ax_cv_gcc_x86_avx_xgetbv_=unknown
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+int
+main ()
+{
+
+     int op = , eax, edx;
+     FILE *f;
+      /* Opcodes for xgetbv */
+      __asm__(".byte 0x0f, 0x01, 0xd0"
+        : "=a" (eax), "=d" (edx)
+        : "c" (op));
+     f = fopen("conftest_xgetbv", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x\n", eax, edx);
+     fclose(f);
+     return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ax_cv_gcc_x86_avx_xgetbv_=`cat conftest_xgetbv`; rm -f conftest_xgetbv
+else
+  ax_cv_gcc_x86_avx_xgetbv_=unknown; rm -f conftest_xgetbv
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_gcc_x86_avx_xgetbv_" >&5
+$as_echo "$ax_cv_gcc_x86_avx_xgetbv_" >&6; }
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+  case $host_cpu in
+    powerpc*)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether altivec is supported" >&5
+$as_echo_n "checking whether altivec is supported... " >&6; }
+if ${ax_cv_have_altivec_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+            if test `/usr/sbin/sysctl -a 2>/dev/null| grep -c hw.optional.altivec` != 0; then
+                if test `/usr/sbin/sysctl -n hw.optional.altivec` = 1; then
+                  ax_cv_have_altivec_ext=yes
+                fi
+            fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_altivec_ext" >&5
+$as_echo "$ax_cv_have_altivec_ext" >&6; }
+
+          if test "$ax_cv_have_altivec_ext" = yes; then
+
+$as_echo "#define HAVE_ALTIVEC /**/" >>confdefs.h
+
+            { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -faltivec" >&5
+$as_echo_n "checking whether C compiler accepts -faltivec... " >&6; }
+if ${ax_cv_check_cflags___faltivec+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -faltivec"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___faltivec=yes
+else
+  ax_cv_check_cflags___faltivec=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___faltivec" >&5
+$as_echo "$ax_cv_check_cflags___faltivec" >&6; }
+if test x"$ax_cv_check_cflags___faltivec" = xyes; then :
+  SIMD_FLAGS="$SIMD_FLAGS -faltivec"
+else
+  :
+fi
+
+          fi
+    ;;
+
+
+    i[3456]86*|x86_64*|amd64*)
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86 cpuid 0x00000001 output" >&5
+$as_echo_n "checking for x86 cpuid 0x00000001 output... " >&6; }
+if ${ax_cv_gcc_x86_cpuid_0x00000001+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "$cross_compiling" = yes; then :
+  ax_cv_gcc_x86_cpuid_0x00000001=unknown
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+int
+main ()
+{
+
+     int op = 0x00000001, eax, ebx, ecx, edx;
+     FILE *f;
+      __asm__("cpuid"
+        : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+        : "a" (op));
+     f = fopen("conftest_cpuid", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
+     fclose(f);
+     return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ax_cv_gcc_x86_cpuid_0x00000001=`cat conftest_cpuid`; rm -f conftest_cpuid
+else
+  ax_cv_gcc_x86_cpuid_0x00000001=unknown; rm -f conftest_cpuid
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_gcc_x86_cpuid_0x00000001" >&5
+$as_echo "$ax_cv_gcc_x86_cpuid_0x00000001" >&6; }
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+      ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
+      edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether mmx is supported" >&5
+$as_echo_n "checking whether mmx is supported... " >&6; }
+if ${ax_cv_have_mmx_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_mmx_ext=no
+        if test "$((0x$edx>>23&0x01))" = 1; then
+          ax_cv_have_mmx_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_mmx_ext" >&5
+$as_echo "$ax_cv_have_mmx_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sse is supported" >&5
+$as_echo_n "checking whether sse is supported... " >&6; }
+if ${ax_cv_have_sse_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_sse_ext=no
+        if test "$((0x$edx>>25&0x01))" = 1; then
+          ax_cv_have_sse_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_sse_ext" >&5
+$as_echo "$ax_cv_have_sse_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sse2 is supported" >&5
+$as_echo_n "checking whether sse2 is supported... " >&6; }
+if ${ax_cv_have_sse2_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_sse2_ext=no
+        if test "$((0x$edx>>26&0x01))" = 1; then
+          ax_cv_have_sse2_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_sse2_ext" >&5
+$as_echo "$ax_cv_have_sse2_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sse3 is supported" >&5
+$as_echo_n "checking whether sse3 is supported... " >&6; }
+if ${ax_cv_have_sse3_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_sse3_ext=no
+        if test "$((0x$ecx&0x01))" = 1; then
+          ax_cv_have_sse3_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_sse3_ext" >&5
+$as_echo "$ax_cv_have_sse3_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ssse3 is supported" >&5
+$as_echo_n "checking whether ssse3 is supported... " >&6; }
+if ${ax_cv_have_ssse3_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_ssse3_ext=no
+        if test "$((0x$ecx>>9&0x01))" = 1; then
+          ax_cv_have_ssse3_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_ssse3_ext" >&5
+$as_echo "$ax_cv_have_ssse3_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sse4.1 is supported" >&5
+$as_echo_n "checking whether sse4.1 is supported... " >&6; }
+if ${ax_cv_have_sse41_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_sse41_ext=no
+        if test "$((0x$ecx>>19&0x01))" = 1; then
+          ax_cv_have_sse41_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_sse41_ext" >&5
+$as_echo "$ax_cv_have_sse41_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether sse4.2 is supported" >&5
+$as_echo_n "checking whether sse4.2 is supported... " >&6; }
+if ${ax_cv_have_sse42_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_sse42_ext=no
+        if test "$((0x$ecx>>20&0x01))" = 1; then
+          ax_cv_have_sse42_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_sse42_ext" >&5
+$as_echo "$ax_cv_have_sse42_ext" >&6; }
+
+      { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether avx is supported by processor" >&5
+$as_echo_n "checking whether avx is supported by processor... " >&6; }
+if ${ax_cv_have_avx_cpu_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+        ax_cv_have_avx_cpu_ext=no
+        if test "$((0x$ecx>>28&0x01))" = 1; then
+          ax_cv_have_avx_cpu_ext=yes
+        fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_avx_cpu_ext" >&5
+$as_echo "$ax_cv_have_avx_cpu_ext" >&6; }
+
+      if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86-AVX xgetbv 0x00000000 output" >&5
+$as_echo_n "checking for x86-AVX xgetbv 0x00000000 output... " >&6; }
+if ${ax_cv_gcc_x86_avx_xgetbv_0x00000000+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test "$cross_compiling" = yes; then :
+  ax_cv_gcc_x86_avx_xgetbv_0x00000000=unknown
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include 
+int
+main ()
+{
+
+     int op = 0x00000000, eax, edx;
+     FILE *f;
+      /* Opcodes for xgetbv */
+      __asm__(".byte 0x0f, 0x01, 0xd0"
+        : "=a" (eax), "=d" (edx)
+        : "c" (op));
+     f = fopen("conftest_xgetbv", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x\n", eax, edx);
+     fclose(f);
+     return 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  ax_cv_gcc_x86_avx_xgetbv_0x00000000=`cat conftest_xgetbv`; rm -f conftest_xgetbv
+else
+  ax_cv_gcc_x86_avx_xgetbv_0x00000000=unknown; rm -f conftest_xgetbv
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_gcc_x86_avx_xgetbv_0x00000000" >&5
+$as_echo "$ax_cv_gcc_x86_avx_xgetbv_0x00000000" >&6; }
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+        xgetbv_eax="0"
+        if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then
+          xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1`
+        fi
+
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether avx is supported by operating system" >&5
+$as_echo_n "checking whether avx is supported by operating system... " >&6; }
+if ${ax_cv_have_avx_ext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+          ax_cv_have_avx_ext=no
+
+          if test "$((0x$ecx>>27&0x01))" = 1; then
+            if test "$((0x$xgetbv_eax&0x6))" = 6; then
+              ax_cv_have_avx_ext=yes
+            fi
+          fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have_avx_ext" >&5
+$as_echo "$ax_cv_have_avx_ext" >&6; }
+        if test x"$ax_cv_have_avx_ext" = x"no"; then
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports AVX, but your operating system doesn't" >&5
+$as_echo "$as_me: WARNING: Your processor supports AVX, but your operating system doesn't" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_mmx_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -mmmx" >&5
+$as_echo_n "checking whether C compiler accepts -mmmx... " >&6; }
+if ${ax_cv_check_cflags___mmmx+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -mmmx"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___mmmx=yes
+else
+  ax_cv_check_cflags___mmmx=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___mmmx" >&5
+$as_echo "$ax_cv_check_cflags___mmmx" >&6; }
+if test x"$ax_cv_check_cflags___mmmx" = xyes; then :
+  ax_cv_support_mmx_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_mmx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mmmx"
+
+$as_echo "#define HAVE_MMX /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports mmx instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports mmx instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ac_cv_sizeof_long" -eq 8; then
+          SIMD_FLAGS="$SIMD_FLAGS -DARCH_64"
+      fi
+
+      if test "$ax_cv_have_sse_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse" >&5
+$as_echo_n "checking whether C compiler accepts -msse... " >&6; }
+if ${ax_cv_check_cflags___msse+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -msse"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___msse=yes
+else
+  ax_cv_check_cflags___msse=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___msse" >&5
+$as_echo "$ax_cv_check_cflags___msse" >&6; }
+if test x"$ax_cv_check_cflags___msse" = xyes; then :
+  ax_cv_support_sse_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_sse_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse -DINTEL_SSE"
+
+$as_echo "#define HAVE_SSE /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports sse instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports sse instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_sse2_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse2" >&5
+$as_echo_n "checking whether C compiler accepts -msse2... " >&6; }
+if ${ax_cv_check_cflags___msse2+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -msse2"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___msse2=yes
+else
+  ax_cv_check_cflags___msse2=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___msse2" >&5
+$as_echo "$ax_cv_check_cflags___msse2" >&6; }
+if test x"$ax_cv_check_cflags___msse2" = xyes; then :
+  ax_cv_support_sse2_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_sse2_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse2 -DINTEL_SSE2"
+
+$as_echo "#define HAVE_SSE2 /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports sse2 instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports sse2 instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_sse3_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse3" >&5
+$as_echo_n "checking whether C compiler accepts -msse3... " >&6; }
+if ${ax_cv_check_cflags___msse3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -msse3"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___msse3=yes
+else
+  ax_cv_check_cflags___msse3=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___msse3" >&5
+$as_echo "$ax_cv_check_cflags___msse3" >&6; }
+if test x"$ax_cv_check_cflags___msse3" = xyes; then :
+  ax_cv_support_sse3_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_sse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse3 -DINTEL_SSE3"
+
+$as_echo "#define HAVE_SSE3 /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports sse3 instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports sse3 instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_ssse3_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -mssse3" >&5
+$as_echo_n "checking whether C compiler accepts -mssse3... " >&6; }
+if ${ax_cv_check_cflags___mssse3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -mssse3"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___mssse3=yes
+else
+  ax_cv_check_cflags___mssse3=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___mssse3" >&5
+$as_echo "$ax_cv_check_cflags___mssse3" >&6; }
+if test x"$ax_cv_check_cflags___mssse3" = xyes; then :
+  ax_cv_support_ssse3_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mssse3"
+
+$as_echo "#define HAVE_SSSE3 /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports ssse3 instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports ssse3 instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_sse41_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse4.1" >&5
+$as_echo_n "checking whether C compiler accepts -msse4.1... " >&6; }
+if ${ax_cv_check_cflags___msse4_1+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -msse4.1"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___msse4_1=yes
+else
+  ax_cv_check_cflags___msse4_1=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___msse4_1" >&5
+$as_echo "$ax_cv_check_cflags___msse4_1" >&6; }
+if test x"$ax_cv_check_cflags___msse4_1" = xyes; then :
+  ax_cv_support_sse41_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_sse41_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.1 -DINTEL_SSE4"
+
+$as_echo "#define HAVE_SSE4_1 /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports sse4.1 instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports sse4.1 instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_sse42_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -msse4.2" >&5
+$as_echo_n "checking whether C compiler accepts -msse4.2... " >&6; }
+if ${ax_cv_check_cflags___msse4_2+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -msse4.2"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___msse4_2=yes
+else
+  ax_cv_check_cflags___msse4_2=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___msse4_2" >&5
+$as_echo "$ax_cv_check_cflags___msse4_2" >&6; }
+if test x"$ax_cv_check_cflags___msse4_2" = xyes; then :
+  ax_cv_support_sse42_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_sse42_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.2 -DINTEL_SSE4"
+
+$as_echo "#define HAVE_SSE4_2 /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports sse4.2 instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports sse4.2 instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+      if test "$ax_cv_have_avx_ext" = yes; then
+        { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts -mavx" >&5
+$as_echo_n "checking whether C compiler accepts -mavx... " >&6; }
+if ${ax_cv_check_cflags___mavx+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+
+  ax_check_save_flags=$CFLAGS
+  CFLAGS="$CFLAGS  -mavx"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ax_cv_check_cflags___mavx=yes
+else
+  ax_cv_check_cflags___mavx=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  CFLAGS=$ax_check_save_flags
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_check_cflags___mavx" >&5
+$as_echo "$ax_cv_check_cflags___mavx" >&6; }
+if test x"$ax_cv_check_cflags___mavx" = xyes; then :
+  ax_cv_support_avx_ext=yes
+else
+  :
+fi
+
+        if test x"$ax_cv_support_avx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mavx"
+
+$as_echo "#define HAVE_AVX /**/" >>confdefs.h
+
+        else
+          { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Your processor supports avx instructions but not your compiler, can you try another compiler?" >&5
+$as_echo "$as_me: WARNING: Your processor supports avx instructions but not your compiler, can you try another compiler?" >&2;}
+        fi
+      fi
+
+  ;;
+  esac
+
+
+
+
+ac_config_files="$ac_config_files Makefile Examples/Makefile src/Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+ if test -n "$EXEEXT"; then
+  am__EXEEXT_TRUE=
+  am__EXEEXT_FALSE='#'
+else
+  am__EXEEXT_TRUE='#'
+  am__EXEEXT_FALSE=
+fi
+
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -p'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -p'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -p'
+  fi
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+if test -x / >/dev/null 2>&1; then
+  as_test_x='test -x'
+else
+  if ls -dL / >/dev/null 2>&1; then
+    as_ls_L_option=L
+  else
+    as_ls_L_option=
+  fi
+  as_test_x='
+    eval sh -c '\''
+      if test -d "$1"; then
+	test -d "$1/.";
+      else
+	case $1 in #(
+	-*)set "./$1";;
+	esac;
+	case `ls -ld'$as_ls_L_option' "$1" 2>/dev/null` in #((
+	???[sx]*):;;*)false;;esac;fi
+    '\'' sh
+  '
+fi
+as_executable_p=$as_test_x
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by Jerasure $as_me 2.0, which was
+generated by GNU Autoconf 2.68.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+Jerasure config.status 2.0
+configured by $0, generated by GNU Autoconf 2.68,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2010 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    $as_echo "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X '$SHELL' '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+macro_version='`$ECHO "$macro_version" | $SED "$delay_single_quote_subst"`'
+macro_revision='`$ECHO "$macro_revision" | $SED "$delay_single_quote_subst"`'
+enable_shared='`$ECHO "$enable_shared" | $SED "$delay_single_quote_subst"`'
+enable_static='`$ECHO "$enable_static" | $SED "$delay_single_quote_subst"`'
+pic_mode='`$ECHO "$pic_mode" | $SED "$delay_single_quote_subst"`'
+enable_fast_install='`$ECHO "$enable_fast_install" | $SED "$delay_single_quote_subst"`'
+SHELL='`$ECHO "$SHELL" | $SED "$delay_single_quote_subst"`'
+ECHO='`$ECHO "$ECHO" | $SED "$delay_single_quote_subst"`'
+PATH_SEPARATOR='`$ECHO "$PATH_SEPARATOR" | $SED "$delay_single_quote_subst"`'
+host_alias='`$ECHO "$host_alias" | $SED "$delay_single_quote_subst"`'
+host='`$ECHO "$host" | $SED "$delay_single_quote_subst"`'
+host_os='`$ECHO "$host_os" | $SED "$delay_single_quote_subst"`'
+build_alias='`$ECHO "$build_alias" | $SED "$delay_single_quote_subst"`'
+build='`$ECHO "$build" | $SED "$delay_single_quote_subst"`'
+build_os='`$ECHO "$build_os" | $SED "$delay_single_quote_subst"`'
+SED='`$ECHO "$SED" | $SED "$delay_single_quote_subst"`'
+Xsed='`$ECHO "$Xsed" | $SED "$delay_single_quote_subst"`'
+GREP='`$ECHO "$GREP" | $SED "$delay_single_quote_subst"`'
+EGREP='`$ECHO "$EGREP" | $SED "$delay_single_quote_subst"`'
+FGREP='`$ECHO "$FGREP" | $SED "$delay_single_quote_subst"`'
+LD='`$ECHO "$LD" | $SED "$delay_single_quote_subst"`'
+NM='`$ECHO "$NM" | $SED "$delay_single_quote_subst"`'
+LN_S='`$ECHO "$LN_S" | $SED "$delay_single_quote_subst"`'
+max_cmd_len='`$ECHO "$max_cmd_len" | $SED "$delay_single_quote_subst"`'
+ac_objext='`$ECHO "$ac_objext" | $SED "$delay_single_quote_subst"`'
+exeext='`$ECHO "$exeext" | $SED "$delay_single_quote_subst"`'
+lt_unset='`$ECHO "$lt_unset" | $SED "$delay_single_quote_subst"`'
+lt_SP2NL='`$ECHO "$lt_SP2NL" | $SED "$delay_single_quote_subst"`'
+lt_NL2SP='`$ECHO "$lt_NL2SP" | $SED "$delay_single_quote_subst"`'
+lt_cv_to_host_file_cmd='`$ECHO "$lt_cv_to_host_file_cmd" | $SED "$delay_single_quote_subst"`'
+lt_cv_to_tool_file_cmd='`$ECHO "$lt_cv_to_tool_file_cmd" | $SED "$delay_single_quote_subst"`'
+reload_flag='`$ECHO "$reload_flag" | $SED "$delay_single_quote_subst"`'
+reload_cmds='`$ECHO "$reload_cmds" | $SED "$delay_single_quote_subst"`'
+OBJDUMP='`$ECHO "$OBJDUMP" | $SED "$delay_single_quote_subst"`'
+deplibs_check_method='`$ECHO "$deplibs_check_method" | $SED "$delay_single_quote_subst"`'
+file_magic_cmd='`$ECHO "$file_magic_cmd" | $SED "$delay_single_quote_subst"`'
+file_magic_glob='`$ECHO "$file_magic_glob" | $SED "$delay_single_quote_subst"`'
+want_nocaseglob='`$ECHO "$want_nocaseglob" | $SED "$delay_single_quote_subst"`'
+DLLTOOL='`$ECHO "$DLLTOOL" | $SED "$delay_single_quote_subst"`'
+sharedlib_from_linklib_cmd='`$ECHO "$sharedlib_from_linklib_cmd" | $SED "$delay_single_quote_subst"`'
+AR='`$ECHO "$AR" | $SED "$delay_single_quote_subst"`'
+AR_FLAGS='`$ECHO "$AR_FLAGS" | $SED "$delay_single_quote_subst"`'
+archiver_list_spec='`$ECHO "$archiver_list_spec" | $SED "$delay_single_quote_subst"`'
+STRIP='`$ECHO "$STRIP" | $SED "$delay_single_quote_subst"`'
+RANLIB='`$ECHO "$RANLIB" | $SED "$delay_single_quote_subst"`'
+old_postinstall_cmds='`$ECHO "$old_postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_postuninstall_cmds='`$ECHO "$old_postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_cmds='`$ECHO "$old_archive_cmds" | $SED "$delay_single_quote_subst"`'
+lock_old_archive_extraction='`$ECHO "$lock_old_archive_extraction" | $SED "$delay_single_quote_subst"`'
+CC='`$ECHO "$CC" | $SED "$delay_single_quote_subst"`'
+CFLAGS='`$ECHO "$CFLAGS" | $SED "$delay_single_quote_subst"`'
+compiler='`$ECHO "$compiler" | $SED "$delay_single_quote_subst"`'
+GCC='`$ECHO "$GCC" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_pipe='`$ECHO "$lt_cv_sys_global_symbol_pipe" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_cdecl='`$ECHO "$lt_cv_sys_global_symbol_to_cdecl" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address" | $SED "$delay_single_quote_subst"`'
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix='`$ECHO "$lt_cv_sys_global_symbol_to_c_name_address_lib_prefix" | $SED "$delay_single_quote_subst"`'
+nm_file_list_spec='`$ECHO "$nm_file_list_spec" | $SED "$delay_single_quote_subst"`'
+lt_sysroot='`$ECHO "$lt_sysroot" | $SED "$delay_single_quote_subst"`'
+objdir='`$ECHO "$objdir" | $SED "$delay_single_quote_subst"`'
+MAGIC_CMD='`$ECHO "$MAGIC_CMD" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_no_builtin_flag='`$ECHO "$lt_prog_compiler_no_builtin_flag" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_pic='`$ECHO "$lt_prog_compiler_pic" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_wl='`$ECHO "$lt_prog_compiler_wl" | $SED "$delay_single_quote_subst"`'
+lt_prog_compiler_static='`$ECHO "$lt_prog_compiler_static" | $SED "$delay_single_quote_subst"`'
+lt_cv_prog_compiler_c_o='`$ECHO "$lt_cv_prog_compiler_c_o" | $SED "$delay_single_quote_subst"`'
+need_locks='`$ECHO "$need_locks" | $SED "$delay_single_quote_subst"`'
+MANIFEST_TOOL='`$ECHO "$MANIFEST_TOOL" | $SED "$delay_single_quote_subst"`'
+DSYMUTIL='`$ECHO "$DSYMUTIL" | $SED "$delay_single_quote_subst"`'
+NMEDIT='`$ECHO "$NMEDIT" | $SED "$delay_single_quote_subst"`'
+LIPO='`$ECHO "$LIPO" | $SED "$delay_single_quote_subst"`'
+OTOOL='`$ECHO "$OTOOL" | $SED "$delay_single_quote_subst"`'
+OTOOL64='`$ECHO "$OTOOL64" | $SED "$delay_single_quote_subst"`'
+libext='`$ECHO "$libext" | $SED "$delay_single_quote_subst"`'
+shrext_cmds='`$ECHO "$shrext_cmds" | $SED "$delay_single_quote_subst"`'
+extract_expsyms_cmds='`$ECHO "$extract_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds_need_lc='`$ECHO "$archive_cmds_need_lc" | $SED "$delay_single_quote_subst"`'
+enable_shared_with_static_runtimes='`$ECHO "$enable_shared_with_static_runtimes" | $SED "$delay_single_quote_subst"`'
+export_dynamic_flag_spec='`$ECHO "$export_dynamic_flag_spec" | $SED "$delay_single_quote_subst"`'
+whole_archive_flag_spec='`$ECHO "$whole_archive_flag_spec" | $SED "$delay_single_quote_subst"`'
+compiler_needs_object='`$ECHO "$compiler_needs_object" | $SED "$delay_single_quote_subst"`'
+old_archive_from_new_cmds='`$ECHO "$old_archive_from_new_cmds" | $SED "$delay_single_quote_subst"`'
+old_archive_from_expsyms_cmds='`$ECHO "$old_archive_from_expsyms_cmds" | $SED "$delay_single_quote_subst"`'
+archive_cmds='`$ECHO "$archive_cmds" | $SED "$delay_single_quote_subst"`'
+archive_expsym_cmds='`$ECHO "$archive_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+module_cmds='`$ECHO "$module_cmds" | $SED "$delay_single_quote_subst"`'
+module_expsym_cmds='`$ECHO "$module_expsym_cmds" | $SED "$delay_single_quote_subst"`'
+with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`'
+allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
+no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
+hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
+hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
+hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`'
+hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`'
+hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
+inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
+link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
+always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
+export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
+exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
+include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
+prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
+postlink_cmds='`$ECHO "$postlink_cmds" | $SED "$delay_single_quote_subst"`'
+file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
+variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
+need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
+need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`'
+version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`'
+runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`'
+shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`'
+libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`'
+library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`'
+soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`'
+install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`'
+postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`'
+postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
+finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`'
+finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`'
+hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`'
+sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`'
+sys_lib_dlsearch_path_spec='`$ECHO "$sys_lib_dlsearch_path_spec" | $SED "$delay_single_quote_subst"`'
+hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`'
+enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`'
+enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`'
+old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`'
+striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`'
+
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in SHELL \
+ECHO \
+PATH_SEPARATOR \
+SED \
+GREP \
+EGREP \
+FGREP \
+LD \
+NM \
+LN_S \
+lt_SP2NL \
+lt_NL2SP \
+reload_flag \
+OBJDUMP \
+deplibs_check_method \
+file_magic_cmd \
+file_magic_glob \
+want_nocaseglob \
+DLLTOOL \
+sharedlib_from_linklib_cmd \
+AR \
+AR_FLAGS \
+archiver_list_spec \
+STRIP \
+RANLIB \
+CC \
+CFLAGS \
+compiler \
+lt_cv_sys_global_symbol_pipe \
+lt_cv_sys_global_symbol_to_cdecl \
+lt_cv_sys_global_symbol_to_c_name_address \
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
+nm_file_list_spec \
+lt_prog_compiler_no_builtin_flag \
+lt_prog_compiler_pic \
+lt_prog_compiler_wl \
+lt_prog_compiler_static \
+lt_cv_prog_compiler_c_o \
+need_locks \
+MANIFEST_TOOL \
+DSYMUTIL \
+NMEDIT \
+LIPO \
+OTOOL \
+OTOOL64 \
+shrext_cmds \
+export_dynamic_flag_spec \
+whole_archive_flag_spec \
+compiler_needs_object \
+with_gnu_ld \
+allow_undefined_flag \
+no_undefined_flag \
+hardcode_libdir_flag_spec \
+hardcode_libdir_separator \
+exclude_expsyms \
+include_expsyms \
+file_list_spec \
+variables_saved_for_relink \
+libname_spec \
+library_names_spec \
+soname_spec \
+install_override_mode \
+finish_eval \
+old_striplib \
+striplib; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in reload_cmds \
+old_postinstall_cmds \
+old_postuninstall_cmds \
+old_archive_cmds \
+extract_expsyms_cmds \
+old_archive_from_new_cmds \
+old_archive_from_expsyms_cmds \
+archive_cmds \
+archive_expsym_cmds \
+module_cmds \
+module_expsym_cmds \
+export_symbols_cmds \
+prelink_cmds \
+postlink_cmds \
+postinstall_cmds \
+postuninstall_cmds \
+finish_cmds \
+sys_lib_search_path_spec \
+sys_lib_dlsearch_path_spec; do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[\\\\\\\`\\"\\\$]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+ac_aux_dir='$ac_aux_dir'
+xsi_shell='$xsi_shell'
+lt_shell_append='$lt_shell_append'
+
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'
+
+
+
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
+    "include/config.h") CONFIG_HEADERS="$CONFIG_HEADERS include/config.h" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+    "Examples/Makefile") CONFIG_FILES="$CONFIG_FILES Examples/Makefile" ;;
+    "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' /dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' >$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' >$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+  ac_MKDIR_P=$MKDIR_P
+  case $MKDIR_P in
+  [\\/$]* | ?:[\\/]* ) ;;
+  */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$_am_arg" : 'X\(//\)[^/]' \| \
+	 X"$_am_arg" : 'X\(//\)$' \| \
+	 X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+  :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "libtool":C)
+
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+#                 Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+
+# The names of the tagged configurations supported by this script.
+available_tags=""
+
+# ### BEGIN LIBTOOL CONFIG
+
+# Which release of libtool.m4 was used?
+macro_version=$macro_version
+macro_revision=$macro_revision
+
+# Whether or not to build shared libraries.
+build_libtool_libs=$enable_shared
+
+# Whether or not to build static libraries.
+build_old_libs=$enable_static
+
+# What type of objects to build.
+pic_mode=$pic_mode
+
+# Whether or not to optimize for fast installation.
+fast_install=$enable_fast_install
+
+# Shell to use when invoking shell scripts.
+SHELL=$lt_SHELL
+
+# An echo program that protects backslashes.
+ECHO=$lt_ECHO
+
+# The PATH separator for the build system.
+PATH_SEPARATOR=$lt_PATH_SEPARATOR
+
+# The host system.
+host_alias=$host_alias
+host=$host
+host_os=$host_os
+
+# The build system.
+build_alias=$build_alias
+build=$build
+build_os=$build_os
+
+# A sed program that does not truncate output.
+SED=$lt_SED
+
+# Sed that helps us avoid accidentally triggering echo(1) options like -n.
+Xsed="\$SED -e 1s/^X//"
+
+# A grep program that handles long lines.
+GREP=$lt_GREP
+
+# An ERE matcher.
+EGREP=$lt_EGREP
+
+# A literal string matcher.
+FGREP=$lt_FGREP
+
+# A BSD- or MS-compatible name lister.
+NM=$lt_NM
+
+# Whether we need soft or hard links.
+LN_S=$lt_LN_S
+
+# What is the maximum length of a command?
+max_cmd_len=$max_cmd_len
+
+# Object file suffix (normally "o").
+objext=$ac_objext
+
+# Executable file suffix (normally "").
+exeext=$exeext
+
+# whether the shell understands "unset".
+lt_unset=$lt_unset
+
+# turn spaces into newlines.
+SP2NL=$lt_lt_SP2NL
+
+# turn newlines into spaces.
+NL2SP=$lt_lt_NL2SP
+
+# convert \$build file names to \$host format.
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+
+# convert \$build files to toolchain format.
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+
+# An object symbol dumper.
+OBJDUMP=$lt_OBJDUMP
+
+# Method to check whether dependent libraries are shared objects.
+deplibs_check_method=$lt_deplibs_check_method
+
+# Command to use when deplibs_check_method = "file_magic".
+file_magic_cmd=$lt_file_magic_cmd
+
+# How to find potential files when deplibs_check_method = "file_magic".
+file_magic_glob=$lt_file_magic_glob
+
+# Find potential files using nocaseglob when deplibs_check_method = "file_magic".
+want_nocaseglob=$lt_want_nocaseglob
+
+# DLL creation program.
+DLLTOOL=$lt_DLLTOOL
+
+# Command to associate shared and link libraries.
+sharedlib_from_linklib_cmd=$lt_sharedlib_from_linklib_cmd
+
+# The archiver.
+AR=$lt_AR
+
+# Flags to create an archive.
+AR_FLAGS=$lt_AR_FLAGS
+
+# How to feed a file listing to the archiver.
+archiver_list_spec=$lt_archiver_list_spec
+
+# A symbol stripping program.
+STRIP=$lt_STRIP
+
+# Commands used to install an old-style archive.
+RANLIB=$lt_RANLIB
+old_postinstall_cmds=$lt_old_postinstall_cmds
+old_postuninstall_cmds=$lt_old_postuninstall_cmds
+
+# Whether to use a lock for old archive extraction.
+lock_old_archive_extraction=$lock_old_archive_extraction
+
+# A C compiler.
+LTCC=$lt_CC
+
+# LTCC compiler flags.
+LTCFLAGS=$lt_CFLAGS
+
+# Take the output of nm and produce a listing of raw symbols and C names.
+global_symbol_pipe=$lt_lt_cv_sys_global_symbol_pipe
+
+# Transform the output of nm in a proper C declaration.
+global_symbol_to_cdecl=$lt_lt_cv_sys_global_symbol_to_cdecl
+
+# Transform the output of nm in a C name address pair.
+global_symbol_to_c_name_address=$lt_lt_cv_sys_global_symbol_to_c_name_address
+
+# Transform the output of nm in a C name address pair when lib prefix is needed.
+global_symbol_to_c_name_address_lib_prefix=$lt_lt_cv_sys_global_symbol_to_c_name_address_lib_prefix
+
+# Specify filename containing input files for \$NM.
+nm_file_list_spec=$lt_nm_file_list_spec
+
+# The root where to search for dependent libraries,and in which our libraries should be installed.
+lt_sysroot=$lt_sysroot
+
+# The name of the directory that contains temporary libtool files.
+objdir=$objdir
+
+# Used to examine libraries when file_magic_cmd begins with "file".
+MAGIC_CMD=$MAGIC_CMD
+
+# Must we lock files when doing compilation?
+need_locks=$lt_need_locks
+
+# Manifest tool.
+MANIFEST_TOOL=$lt_MANIFEST_TOOL
+
+# Tool to manipulate archived DWARF debug symbol files on Mac OS X.
+DSYMUTIL=$lt_DSYMUTIL
+
+# Tool to change global to local symbols on Mac OS X.
+NMEDIT=$lt_NMEDIT
+
+# Tool to manipulate fat objects and archives on Mac OS X.
+LIPO=$lt_LIPO
+
+# ldd/readelf like tool for Mach-O binaries on Mac OS X.
+OTOOL=$lt_OTOOL
+
+# ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4.
+OTOOL64=$lt_OTOOL64
+
+# Old archive suffix (normally "a").
+libext=$libext
+
+# Shared library suffix (normally ".so").
+shrext_cmds=$lt_shrext_cmds
+
+# The commands to extract the exported symbol list from a shared archive.
+extract_expsyms_cmds=$lt_extract_expsyms_cmds
+
+# Variables whose values should be saved in libtool wrapper scripts and
+# restored at link time.
+variables_saved_for_relink=$lt_variables_saved_for_relink
+
+# Do we need the "lib" prefix for modules?
+need_lib_prefix=$need_lib_prefix
+
+# Do we need a version for libraries?
+need_version=$need_version
+
+# Library versioning type.
+version_type=$version_type
+
+# Shared library runtime path variable.
+runpath_var=$runpath_var
+
+# Shared library path variable.
+shlibpath_var=$shlibpath_var
+
+# Is shlibpath searched before the hard-coded library search path?
+shlibpath_overrides_runpath=$shlibpath_overrides_runpath
+
+# Format of library name prefix.
+libname_spec=$lt_libname_spec
+
+# List of archive names.  First name is the real one, the rest are links.
+# The last name is the one that the linker finds with -lNAME
+library_names_spec=$lt_library_names_spec
+
+# The coded name of the library, if different from the real name.
+soname_spec=$lt_soname_spec
+
+# Permission mode override for installation of shared libraries.
+install_override_mode=$lt_install_override_mode
+
+# Command to use after installation of a shared archive.
+postinstall_cmds=$lt_postinstall_cmds
+
+# Command to use after uninstallation of a shared archive.
+postuninstall_cmds=$lt_postuninstall_cmds
+
+# Commands used to finish a libtool library installation in a directory.
+finish_cmds=$lt_finish_cmds
+
+# As "finish_cmds", except a single script fragment to be evaled but
+# not shown.
+finish_eval=$lt_finish_eval
+
+# Whether we should hardcode library paths into libraries.
+hardcode_into_libs=$hardcode_into_libs
+
+# Compile-time system search path for libraries.
+sys_lib_search_path_spec=$lt_sys_lib_search_path_spec
+
+# Run-time system search path for libraries.
+sys_lib_dlsearch_path_spec=$lt_sys_lib_dlsearch_path_spec
+
+# Whether dlopen is supported.
+dlopen_support=$enable_dlopen
+
+# Whether dlopen of programs is supported.
+dlopen_self=$enable_dlopen_self
+
+# Whether dlopen of statically linked programs is supported.
+dlopen_self_static=$enable_dlopen_self_static
+
+# Commands to strip libraries.
+old_striplib=$lt_old_striplib
+striplib=$lt_striplib
+
+
+# The linker used to build libraries.
+LD=$lt_LD
+
+# How to create reloadable object files.
+reload_flag=$lt_reload_flag
+reload_cmds=$lt_reload_cmds
+
+# Commands used to build an old-style archive.
+old_archive_cmds=$lt_old_archive_cmds
+
+# A language specific compiler.
+CC=$lt_compiler
+
+# Is the compiler the GNU compiler?
+with_gcc=$GCC
+
+# Compiler flag to turn off builtin functions.
+no_builtin_flag=$lt_lt_prog_compiler_no_builtin_flag
+
+# Additional compiler flags for building library objects.
+pic_flag=$lt_lt_prog_compiler_pic
+
+# How to pass a linker flag through the compiler.
+wl=$lt_lt_prog_compiler_wl
+
+# Compiler flag to prevent dynamic linking.
+link_static_flag=$lt_lt_prog_compiler_static
+
+# Does compiler simultaneously support -c and -o options?
+compiler_c_o=$lt_lt_cv_prog_compiler_c_o
+
+# Whether or not to add -lc for building shared libraries.
+build_libtool_need_lc=$archive_cmds_need_lc
+
+# Whether or not to disallow shared libs when runtime libs are static.
+allow_libtool_libs_with_static_runtimes=$enable_shared_with_static_runtimes
+
+# Compiler flag to allow reflexive dlopens.
+export_dynamic_flag_spec=$lt_export_dynamic_flag_spec
+
+# Compiler flag to generate shared objects directly from archives.
+whole_archive_flag_spec=$lt_whole_archive_flag_spec
+
+# Whether the compiler copes with passing no objects directly.
+compiler_needs_object=$lt_compiler_needs_object
+
+# Create an old-style archive from a shared archive.
+old_archive_from_new_cmds=$lt_old_archive_from_new_cmds
+
+# Create a temporary old-style archive to link instead of a shared archive.
+old_archive_from_expsyms_cmds=$lt_old_archive_from_expsyms_cmds
+
+# Commands used to build a shared archive.
+archive_cmds=$lt_archive_cmds
+archive_expsym_cmds=$lt_archive_expsym_cmds
+
+# Commands used to build a loadable module if different from building
+# a shared archive.
+module_cmds=$lt_module_cmds
+module_expsym_cmds=$lt_module_expsym_cmds
+
+# Whether we are building with GNU ld or not.
+with_gnu_ld=$lt_with_gnu_ld
+
+# Flag that allows shared libraries with undefined symbols to be built.
+allow_undefined_flag=$lt_allow_undefined_flag
+
+# Flag that enforces no undefined symbols.
+no_undefined_flag=$lt_no_undefined_flag
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist
+hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
+
+# Whether we need a single "-rpath" flag with a separated argument.
+hardcode_libdir_separator=$lt_hardcode_libdir_separator
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary.
+hardcode_direct=$hardcode_direct
+
+# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
+# DIR into the resulting binary and the resulting library dependency is
+# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
+# library is relocated.
+hardcode_direct_absolute=$hardcode_direct_absolute
+
+# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+# into the resulting binary.
+hardcode_minus_L=$hardcode_minus_L
+
+# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+# into the resulting binary.
+hardcode_shlibpath_var=$hardcode_shlibpath_var
+
+# Set to "yes" if building a shared library automatically hardcodes DIR
+# into the library and all subsequent libraries and executables linked
+# against it.
+hardcode_automatic=$hardcode_automatic
+
+# Set to yes if linker adds runtime paths of dependent libraries
+# to runtime path list.
+inherit_rpath=$inherit_rpath
+
+# Whether libtool must link a program against all its dependency libraries.
+link_all_deplibs=$link_all_deplibs
+
+# Set to "yes" if exported symbols are required.
+always_export_symbols=$always_export_symbols
+
+# The commands to list exported symbols.
+export_symbols_cmds=$lt_export_symbols_cmds
+
+# Symbols that should not be listed in the preloaded symbols.
+exclude_expsyms=$lt_exclude_expsyms
+
+# Symbols that must always be exported.
+include_expsyms=$lt_include_expsyms
+
+# Commands necessary for linking programs (against libraries) with templates.
+prelink_cmds=$lt_prelink_cmds
+
+# Commands necessary for finishing linking programs.
+postlink_cmds=$lt_postlink_cmds
+
+# Specify filename containing input files.
+file_list_spec=$lt_file_list_spec
+
+# How to hardcode a shared library path into an executable.
+hardcode_action=$hardcode_action
+
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+
+ltmain="$ac_aux_dir/ltmain.sh"
+
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '$q' "$ltmain" >> "$cfgfile" \
+     || (rm -f "$cfgfile"; exit 1)
+
+  if test x"$xsi_shell" = xyes; then
+  sed -e '/^func_dirname ()$/,/^} # func_dirname /c\
+func_dirname ()\
+{\
+\    case ${1} in\
+\      */*) func_dirname_result="${1%/*}${2}" ;;\
+\      *  ) func_dirname_result="${3}" ;;\
+\    esac\
+} # Extended-shell func_dirname implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_basename ()$/,/^} # func_basename /c\
+func_basename ()\
+{\
+\    func_basename_result="${1##*/}"\
+} # Extended-shell func_basename implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_dirname_and_basename ()$/,/^} # func_dirname_and_basename /c\
+func_dirname_and_basename ()\
+{\
+\    case ${1} in\
+\      */*) func_dirname_result="${1%/*}${2}" ;;\
+\      *  ) func_dirname_result="${3}" ;;\
+\    esac\
+\    func_basename_result="${1##*/}"\
+} # Extended-shell func_dirname_and_basename implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_stripname ()$/,/^} # func_stripname /c\
+func_stripname ()\
+{\
+\    # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are\
+\    # positional parameters, so assign one to ordinary parameter first.\
+\    func_stripname_result=${3}\
+\    func_stripname_result=${func_stripname_result#"${1}"}\
+\    func_stripname_result=${func_stripname_result%"${2}"}\
+} # Extended-shell func_stripname implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_split_long_opt ()$/,/^} # func_split_long_opt /c\
+func_split_long_opt ()\
+{\
+\    func_split_long_opt_name=${1%%=*}\
+\    func_split_long_opt_arg=${1#*=}\
+} # Extended-shell func_split_long_opt implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_split_short_opt ()$/,/^} # func_split_short_opt /c\
+func_split_short_opt ()\
+{\
+\    func_split_short_opt_arg=${1#??}\
+\    func_split_short_opt_name=${1%"$func_split_short_opt_arg"}\
+} # Extended-shell func_split_short_opt implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_lo2o ()$/,/^} # func_lo2o /c\
+func_lo2o ()\
+{\
+\    case ${1} in\
+\      *.lo) func_lo2o_result=${1%.lo}.${objext} ;;\
+\      *)    func_lo2o_result=${1} ;;\
+\    esac\
+} # Extended-shell func_lo2o implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_xform ()$/,/^} # func_xform /c\
+func_xform ()\
+{\
+    func_xform_result=${1%.*}.lo\
+} # Extended-shell func_xform implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_arith ()$/,/^} # func_arith /c\
+func_arith ()\
+{\
+    func_arith_result=$(( $* ))\
+} # Extended-shell func_arith implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_len ()$/,/^} # func_len /c\
+func_len ()\
+{\
+    func_len_result=${#1}\
+} # Extended-shell func_len implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+fi
+
+if test x"$lt_shell_append" = xyes; then
+  sed -e '/^func_append ()$/,/^} # func_append /c\
+func_append ()\
+{\
+    eval "${1}+=\\${2}"\
+} # Extended-shell func_append implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  sed -e '/^func_append_quoted ()$/,/^} # func_append_quoted /c\
+func_append_quoted ()\
+{\
+\    func_quote_for_eval "${2}"\
+\    eval "${1}+=\\\\ \\$func_quote_for_eval_result"\
+} # Extended-shell func_append_quoted implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+
+
+  # Save a `func_append' function call where possible by direct use of '+='
+  sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
+    && mv -f "$cfgfile.tmp" "$cfgfile" \
+      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+  test 0 -eq $? || _lt_function_replace_fail=:
+else
+  # Save a `func_append' function call even when '+=' is not available
+  sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
+    && mv -f "$cfgfile.tmp" "$cfgfile" \
+      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+  test 0 -eq $? || _lt_function_replace_fail=:
+fi
+
+if test x"$_lt_function_replace_fail" = x":"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unable to substitute extended shell functions in $ofile" >&5
+$as_echo "$as_me: WARNING: Unable to substitute extended shell functions in $ofile" >&2;}
+fi
+
+
+   mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+
+ ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/src/erasure-code/jerasure/jerasure/configure.ac b/src/erasure-code/jerasure/jerasure/configure.ac
new file mode 100644
index 00000000..e948ddcd
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/configure.ac
@@ -0,0 +1,32 @@
+# Jerasure autoconf template
+
+# FIXME - add project url as the last argument
+AC_INIT(Jerasure, 2.0)
+
+AC_PREREQ([2.61])
+
+AM_INIT_AUTOMAKE([no-dependencies], [foreign])
+LT_INIT # libtool
+
+AC_CONFIG_HEADER(include/config.h)
+
+dnl Needed when reconfiguring with 'autoreconf -i -s'
+AC_CONFIG_MACRO_DIR([m4])
+
+dnl Compiling with per-target flags requires AM_PROG_CC_C_O.
+AC_PROG_CC
+
+# Check for gf_complete headers
+AC_CHECK_HEADERS(gf_complete.h gf_general.h gf_int.h gf_method.h gf_rand.h)
+
+AC_CHECK_LIB([gf_complete], [gf_init_easy], [],
+             [
+              echo "Error! You need to have gf_complete installed."
+              echo "gf_complete is available from http://web.eecs.utk.edu/~plank/plank/papers/CS-13-703.html"
+              exit -1
+             ])
+
+AX_EXT()
+
+AC_CONFIG_FILES([Makefile Examples/Makefile src/Makefile])
+AC_OUTPUT
diff --git a/src/erasure-code/jerasure/jerasure/include/cauchy.h b/src/erasure-code/jerasure/jerasure/include/cauchy.h
new file mode 100644
index 00000000..a4fad6bd
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/cauchy.h
@@ -0,0 +1,45 @@
+/* *
+ * Copyright (c) 2013, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+extern int *cauchy_original_coding_matrix(int k, int m, int w);
+extern int *cauchy_xy_coding_matrix(int k, int m, int w, int *x, int *y);
+extern void cauchy_improve_coding_matrix(int k, int m, int w, int *matrix);
+extern int *cauchy_good_general_coding_matrix(int k, int m, int w);
+extern int cauchy_n_ones(int n, int w);
diff --git a/src/erasure-code/jerasure/jerasure/include/config.h.in b/src/erasure-code/jerasure/jerasure/include/config.h.in
new file mode 100644
index 00000000..a20c1e3d
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/config.h.in
@@ -0,0 +1,107 @@
+/* include/config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Support Altivec instructions */
+#undef HAVE_ALTIVEC
+
+/* Support AVX (Advanced Vector Extensions) instructions */
+#undef HAVE_AVX
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_COMPLETE_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_GENERAL_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_INT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_METHOD_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_RAND_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `gf_complete' library (-lgf_complete). */
+#undef HAVE_LIBGF_COMPLETE
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_MEMORY_H
+
+/* Support mmx instructions */
+#undef HAVE_MMX
+
+/* Support SSE (Streaming SIMD Extensions) instructions */
+#undef HAVE_SSE
+
+/* Support SSE2 (Streaming SIMD Extensions 2) instructions */
+#undef HAVE_SSE2
+
+/* Support SSE3 (Streaming SIMD Extensions 3) instructions */
+#undef HAVE_SSE3
+
+/* Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions */
+#undef HAVE_SSE4_1
+
+/* Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions */
+#undef HAVE_SSE4_2
+
+/* Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions */
+#undef HAVE_SSSE3
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Version number of package */
+#undef VERSION
diff --git a/src/erasure-code/jerasure/jerasure/include/config.h.in~ b/src/erasure-code/jerasure/jerasure/include/config.h.in~
new file mode 100644
index 00000000..a20c1e3d
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/config.h.in~
@@ -0,0 +1,107 @@
+/* include/config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Support Altivec instructions */
+#undef HAVE_ALTIVEC
+
+/* Support AVX (Advanced Vector Extensions) instructions */
+#undef HAVE_AVX
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_COMPLETE_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_GENERAL_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_INT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_METHOD_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_GF_RAND_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `gf_complete' library (-lgf_complete). */
+#undef HAVE_LIBGF_COMPLETE
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_MEMORY_H
+
+/* Support mmx instructions */
+#undef HAVE_MMX
+
+/* Support SSE (Streaming SIMD Extensions) instructions */
+#undef HAVE_SSE
+
+/* Support SSE2 (Streaming SIMD Extensions 2) instructions */
+#undef HAVE_SSE2
+
+/* Support SSE3 (Streaming SIMD Extensions 3) instructions */
+#undef HAVE_SSE3
+
+/* Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions */
+#undef HAVE_SSE4_1
+
+/* Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions */
+#undef HAVE_SSE4_2
+
+/* Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions */
+#undef HAVE_SSSE3
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the  header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Version number of package */
+#undef VERSION
diff --git a/src/erasure-code/jerasure/jerasure/include/galois.h b/src/erasure-code/jerasure/jerasure/include/galois.h
new file mode 100644
index 00000000..b57ef3ce
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/galois.h
@@ -0,0 +1,100 @@
+/* *
+ * Copyright (c) 2013, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _GALOIS_H
+#define _GALOIS_H
+
+#include 
+#include 
+#include 
+
+extern int galois_init_default_field(int w);
+extern void galois_change_technique(gf_t *gf, int w);
+
+extern int galois_single_multiply(int a, int b, int w);
+extern int galois_single_divide(int a, int b, int w);
+extern int galois_inverse(int x, int w);
+
+void galois_region_xor(           char *src,         /* Source Region */
+                                  char *dest,        /* Dest Region (holds result) */
+                                  int nbytes);      /* Number of bytes in region */
+
+/* These multiply regions in w=8, w=16 and w=32.  They are much faster
+   than calling galois_single_multiply.  The regions must be long word aligned. */
+
+void galois_w08_region_multiply(char *region,       /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,       /* Number of bytes in region */
+                                  char *r2,         /* If r2 != NULL, products go here.  
+                                                       Otherwise region is overwritten */
+                                  int add);         /* If (r2 != NULL && add) the produce is XOR'd with r2 */
+
+void galois_w16_region_multiply(char *region,       /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,       /* Number of bytes in region */
+                                  char *r2,         /* If r2 != NULL, products go here.  
+                                                       Otherwise region is overwritten */
+                                  int add);         /* If (r2 != NULL && add) the produce is XOR'd with r2 */
+
+void galois_w32_region_multiply(char *region,       /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,       /* Number of bytes in region */
+                                  char *r2,         /* If r2 != NULL, products go here.  
+                                                       Otherwise region is overwritten */
+                                  int add);         /* If (r2 != NULL && add) the produce is XOR'd with r2 */
+
+gf_t* galois_init_field(int w,
+                             int mult_type,
+                             int region_type,
+                             int divide_type,
+                             uint64_t prim_poly,
+                             int arg1,
+                             int arg2);
+
+gf_t* galois_init_composite_field(int w,
+                                int region_type,
+                                int divide_type,
+                                int degree,
+                                gf_t* base_gf);
+
+gf_t * galois_get_field_ptr(int w);
+
+
+#endif
diff --git a/src/erasure-code/jerasure/jerasure/include/jerasure.h b/src/erasure-code/jerasure/jerasure/include/jerasure.h
new file mode 100644
index 00000000..08367809
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/jerasure.h
@@ -0,0 +1,294 @@
+/* *
+ * Copyright (c) 2013, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _JERASURE_H
+#define _JERASURE_H
+
+/* This uses procedures from the Galois Field arithmetic library */
+
+#include "galois.h"
+
+/* ------------------------------------------------------------ */
+/* In all of the routines below:
+
+   k = Number of data devices
+   m = Number of coding devices
+   w = Word size
+
+   data_ptrs = An array of k pointers to data which is size bytes.  
+               Size must be a multiple of sizeof(long).
+               Pointers must also be longword aligned.
+ 
+   coding_ptrs = An array of m pointers to coding data which is size bytes.
+
+   packetsize = The size of a coding block with bitmatrix coding. 
+                When you code with a bitmatrix, you will use w packets
+                of size packetsize.
+
+   matrix = an array of k*m integers.  
+            It represents an m by k matrix.
+            Element i,j is in matrix[i*k+j];
+
+   bitmatrix = an array of k*m*w*w integers.
+            It represents an mw by kw matrix.
+            Element i,j is in matrix[i*k*w+j];
+
+   erasures = an array of id's of erased devices. 
+              Id's are integers between 0 and k+m-1.
+              Id's 0 to k-1 are id's of data devices.
+              Id's k to k+m-1 are id's of coding devices: 
+                  Coding device id = id-k.
+              If there are e erasures, erasures[e] = -1.
+
+   schedule = an array of schedule operations.  
+
+              If there are m operations, then schedule[m][0] = -1.
+
+   operation = an array of 5 integers:
+
+          0 = operation: 0 for copy, 1 for xor (-1 for end)
+          1 = source device (0 - k+m-1)
+          2 = source packet (0 - w-1)
+          3 = destination device (0 - k+m-1)
+          4 = destination packet (0 - w-1)
+ */
+
+/* ---------------------------------------------------------------  */
+/* Bitmatrices / schedules ---------------------------------------- */
+/*
+ - jerasure_matrix_to_bitmatrix turns a m X k matrix in GF(2^w) into a
+                              wm X wk bitmatrix (in GF(2)).  This is
+                              explained in the Cauchy Reed-Solomon coding
+                              paper.
+
+ - jerasure_dumb_bitmatrix_to_schedule turns a bitmatrix into a schedule 
+                              using the straightforward algorithm -- just
+                              schedule the dot products defined by each
+                              row of the matrix.
+
+ - jerasure_smart_bitmatrix_to_schedule turns a bitmatrix into a schedule,
+                              but tries to use previous dot products to
+                              calculate new ones.  This is the optimization
+                              explained in the original Liberation code paper.
+
+ - jerasure_generate_schedule_cache precalcalculate all the schedule for the
+                              given distribution bitmatrix.  M must equal 2.
+ 
+ - jerasure_free_schedule frees a schedule that was allocated with 
+                              jerasure_XXX_bitmatrix_to_schedule.
+ 
+ - jerasure_free_schedule_cache frees a schedule cache that was created with 
+                              jerasure_generate_schedule_cache.
+ */
+
+int *jerasure_matrix_to_bitmatrix(int k, int m, int w, int *matrix);
+int **jerasure_dumb_bitmatrix_to_schedule(int k, int m, int w, int *bitmatrix);
+int **jerasure_smart_bitmatrix_to_schedule(int k, int m, int w, int *bitmatrix);
+int ***jerasure_generate_schedule_cache(int k, int m, int w, int *bitmatrix, int smart);
+
+void jerasure_free_schedule(int **schedule);
+void jerasure_free_schedule_cache(int k, int m, int ***cache);
+
+
+/* ------------------------------------------------------------ */
+/* Encoding - these are all straightforward.  jerasure_matrix_encode only 
+   works with w = 8|16|32.  */
+
+void jerasure_do_parity(int k, char **data_ptrs, char *parity_ptr, int size);
+
+void jerasure_matrix_encode(int k, int m, int w, int *matrix,
+                          char **data_ptrs, char **coding_ptrs, int size);
+
+void jerasure_bitmatrix_encode(int k, int m, int w, int *bitmatrix,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize);
+
+void jerasure_schedule_encode(int k, int m, int w, int **schedule,
+                                  char **data_ptrs, char **coding_ptrs, int size, int packetsize);
+
+/* ------------------------------------------------------------ */
+/* Decoding. -------------------------------------------------- */
+
+/* These return integers, because the matrix may not be invertible. 
+   
+   The parameter row_k_ones should be set to 1 if row k of the matrix
+   (or rows kw to (k+1)w+1) of th distribution matrix are all ones
+   (or all identity matrices).  Then you can improve the performance
+   of decoding when there is more than one failure, and the parity
+   device didn't fail.  You do it by decoding all but one of the data
+   devices, and then decoding the last data device from the data devices
+   and the parity device.
+
+   jerasure_schedule_decode_lazy generates the schedule on the fly.
+
+   jerasure_matrix_decode only works when w = 8|16|32.
+
+   jerasure_make_decoding_matrix/bitmatrix make the k*k decoding matrix
+         (or wk*wk bitmatrix) by taking the rows corresponding to k
+         non-erased devices of the distribution matrix, and then
+         inverting that matrix.
+
+         You should already have allocated the decoding matrix and
+         dm_ids, which is a vector of k integers.  These will be
+         filled in appropriately.  dm_ids[i] is the id of element
+         i of the survivors vector.  I.e. row i of the decoding matrix
+         times dm_ids equals data drive i.
+
+         Both of these routines take "erased" instead of "erasures".
+         Erased is a vector with k+m elements, which has 0 or 1 for 
+         each device's id, according to whether the device is erased.
+ 
+   jerasure_erasures_to_erased allocates and returns erased from erasures.
+    
+ */
+
+int jerasure_matrix_decode(int k, int m, int w, 
+                          int *matrix, int row_k_ones, int *erasures,
+                          char **data_ptrs, char **coding_ptrs, int size);
+                          
+int jerasure_bitmatrix_decode(int k, int m, int w, 
+                            int *bitmatrix, int row_k_ones, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize);
+
+int jerasure_schedule_decode_lazy(int k, int m, int w, int *bitmatrix, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize,
+                            int smart);
+
+int jerasure_schedule_decode_cache(int k, int m, int w, int ***scache, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize);
+
+int jerasure_make_decoding_matrix(int k, int m, int w, int *matrix, int *erased, 
+                                  int *decoding_matrix, int *dm_ids);
+
+int jerasure_make_decoding_bitmatrix(int k, int m, int w, int *matrix, int *erased, 
+                                  int *decoding_matrix, int *dm_ids);
+
+int *jerasure_erasures_to_erased(int k, int m, int *erasures);
+
+/* ------------------------------------------------------------ */
+/* These perform dot products and schedules. -------------------*/
+/*
+   src_ids is a matrix of k id's (0 - k-1 for data devices, k - k+m-1
+   for coding devices) that identify the source devices.  Dest_id is
+   the id of the destination device.
+
+   jerasure_matrix_dotprod only works when w = 8|16|32.
+
+   jerasure_do_scheduled_operations executes the schedule on w*packetsize worth of
+   bytes from each device.  ptrs is an array of pointers which should have as many
+   elements as the highest referenced device in the schedule.
+
+ */
+ 
+void jerasure_matrix_dotprod(int k, int w, int *matrix_row,
+                          int *src_ids, int dest_id,
+                          char **data_ptrs, char **coding_ptrs, int size);
+
+void jerasure_bitmatrix_dotprod(int k, int w, int *bitmatrix_row,
+                             int *src_ids, int dest_id,
+                             char **data_ptrs, char **coding_ptrs, int size, int packetsize);
+
+void jerasure_do_scheduled_operations(char **ptrs, int **schedule, int packetsize);
+
+/* ------------------------------------------------------------ */
+/* Matrix Inversion ------------------------------------------- */
+/*
+   The two matrix inversion functions work on rows*rows matrices of
+   ints.  If a bitmatrix, then each int will just be zero or one.
+   Otherwise, they will be elements of gf(2^w).  Obviously, you can
+   do bit matrices with crs_invert_matrix() and set w = 1, but
+   crs_invert_bitmatrix will be more efficient.
+
+   The two invertible functions return whether a matrix is invertible.
+   They are more efficient than the inverstion functions.
+
+   Mat will be destroyed when the matrix inversion or invertible
+   testing is done.  Sorry.
+
+   Inv must be allocated by the caller.
+
+   The two invert_matrix functions return 0 on success, and -1 if the
+   matrix is uninvertible.
+
+   The two invertible function simply return whether the matrix is
+   invertible.  (0 or 1). Mat will be destroyed.
+ */
+
+int jerasure_invert_matrix(int *mat, int *inv, int rows, int w);
+int jerasure_invert_bitmatrix(int *mat, int *inv, int rows);
+int jerasure_invertible_matrix(int *mat, int rows, int w);
+int jerasure_invertible_bitmatrix(int *mat, int rows);
+
+/* ------------------------------------------------------------ */
+/* Basic matrix operations -------------------------------------*/
+/*
+   Each of the print_matrix routines require a w.  In jerasure_print_matrix,
+   this is to calculate the field width.  In jerasure_print_bitmatrix, it is
+   to put spaces between the bits.
+
+   jerasure_matrix_multiply is a simple matrix multiplier in GF(2^w).  It returns a r1*c2
+   matrix, which is the product of the two input matrices.  It allocates
+   the product.  Obviously, c1 should equal r2.  However, this is not
+   validated by the procedure.  
+*/
+
+void jerasure_print_matrix(int *matrix, int rows, int cols, int w);
+void jerasure_print_bitmatrix(int *matrix, int rows, int cols, int w);
+
+
+int *jerasure_matrix_multiply(int *m1, int *m2, int r1, int c1, int r2, int c2, int w);
+
+/* ------------------------------------------------------------ */
+/* Stats ------------------------------------------------------ */
+/*
+  jerasure_get_stats fills in a vector of three doubles:
+
+      fill_in[0] is the number of bytes that have been XOR'd
+      fill_in[1] is the number of bytes that have been copied
+      fill_in[2] is the number of bytes that have been multiplied
+                 by a constant in GF(2^w)
+
+  When jerasure_get_stats() is called, it resets its values.
+ */
+
+void jerasure_get_stats(double *fill_in);
+
+int jerasure_autoconf_test();
+
+#endif
diff --git a/src/erasure-code/jerasure/jerasure/include/liberation.h b/src/erasure-code/jerasure/jerasure/include/liberation.h
new file mode 100644
index 00000000..f2fb7233
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/liberation.h
@@ -0,0 +1,47 @@
+/* *
+ * Copyright (c) 2013, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _LIBERATION
+
+extern int *liberation_coding_bitmatrix(int k, int w);
+extern int *liber8tion_coding_bitmatrix(int k);
+extern int *blaum_roth_coding_bitmatrix(int k, int w);
+
+#endif
diff --git a/src/erasure-code/jerasure/jerasure/include/reed_sol.h b/src/erasure-code/jerasure/jerasure/include/reed_sol.h
new file mode 100644
index 00000000..d2d8fe8c
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/include/reed_sol.h
@@ -0,0 +1,50 @@
+/* *
+ * Copyright (c) 2013, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+extern int *reed_sol_vandermonde_coding_matrix(int k, int m, int w);
+extern int *reed_sol_extended_vandermonde_matrix(int rows, int cols, int w);
+extern int *reed_sol_big_vandermonde_distribution_matrix(int rows, int cols, int w);
+
+extern int reed_sol_r6_encode(int k, int w, char **data_ptrs, char **coding_ptrs, int size);
+extern int *reed_sol_r6_coding_matrix(int k, int w);
+
+extern void reed_sol_galois_w08_region_multby_2(char *region, int nbytes);
+extern void reed_sol_galois_w16_region_multby_2(char *region, int nbytes);
+extern void reed_sol_galois_w32_region_multby_2(char *region, int nbytes);
diff --git a/src/erasure-code/jerasure/jerasure/install-sh b/src/erasure-code/jerasure/jerasure/install-sh
new file mode 100755
index 00000000..a9244eb0
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/install-sh
@@ -0,0 +1,527 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2011-01-19.21; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# `make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+nl='
+'
+IFS=" ""	$nl"
+
+# set DOITPROG to echo to test this script
+
+# Don't use :- since 4.3BSD and earlier shells don't like it.
+doit=${DOITPROG-}
+if test -z "$doit"; then
+  doit_exec=exec
+else
+  doit_exec=$doit
+fi
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_glob='?'
+initialize_posix_glob='
+  test "$posix_glob" != "?" || {
+    if (set -f) 2>/dev/null; then
+      posix_glob=
+    else
+      posix_glob=:
+    fi
+  }
+'
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+no_target_directory=
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve the last data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -s            $stripprog installed files.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+	shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+	case $mode in
+	  *' '* | *'	'* | *'
+'*	  | *'*'* | *'?'* | *'['*)
+	    echo "$0: invalid mode: $mode" >&2
+	    exit 1;;
+	esac
+	shift;;
+
+    -o) chowncmd="$chownprog $2"
+	shift;;
+
+    -s) stripcmd=$stripprog;;
+
+    -t) dst_arg=$2
+	# Protect names problematic for `test' and other utilities.
+	case $dst_arg in
+	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
+	esac
+	shift;;
+
+    -T) no_target_directory=true;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --)	shift
+	break;;
+
+    -*)	echo "$0: invalid option: $1" >&2
+	exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for `test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call `install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+	u_plus_rw=
+      else
+	u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+	u_plus_rw=
+      else
+	u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for `test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename; won't work
+    # if double slashes aren't ignored.
+    if test -d "$dst"; then
+      if test -n "$no_target_directory"; then
+	echo "$0: $dst_arg: Is a directory" >&2
+	exit 1
+      fi
+      dstdir=$dst
+      dst=$dstdir/`basename "$src"`
+      dstdir_status=0
+    else
+      # Prefer dirname, but fall back on a substitute if dirname fails.
+      dstdir=`
+	(dirname "$dst") 2>/dev/null ||
+	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	     X"$dst" : 'X\(//\)[^/]' \| \
+	     X"$dst" : 'X\(//\)$' \| \
+	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
+	echo X"$dst" |
+	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\/\)[^/].*/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\/\)$/{
+		   s//\1/
+		   q
+		 }
+		 /^X\(\/\).*/{
+		   s//\1/
+		   q
+		 }
+		 s/.*/./; q'
+      `
+
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+	# Create intermediate dirs using mode 755 as modified by the umask.
+	# This is like FreeBSD 'install' as of 1997-10-28.
+	umask=`umask`
+	case $stripcmd.$umask in
+	  # Optimize common cases.
+	  *[2367][2367]) mkdir_umask=$umask;;
+	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
+
+	  *[0-7])
+	    mkdir_umask=`expr $umask + 22 \
+	      - $umask % 100 % 40 + $umask % 20 \
+	      - $umask % 10 % 4 + $umask % 2
+	    `;;
+	  *) mkdir_umask=$umask,go-w;;
+	esac
+
+	# With -d, create the new directory with the user-specified mode.
+	# Otherwise, rely on $mkdir_umask.
+	if test -n "$dir_arg"; then
+	  mkdir_mode=-m$mode
+	else
+	  mkdir_mode=
+	fi
+
+	posix_mkdir=false
+	case $umask in
+	  *[123567][0-7][0-7])
+	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
+	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
+	    ;;
+	  *)
+	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
+
+	    if (umask $mkdir_umask &&
+		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
+	    then
+	      if test -z "$dir_arg" || {
+		   # Check for POSIX incompatibilities with -m.
+		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+		   # other-writeable bit of parent directory when it shouldn't.
+		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
+		   case $ls_ld_tmpdir in
+		     d????-?r-*) different_mode=700;;
+		     d????-?--*) different_mode=755;;
+		     *) false;;
+		   esac &&
+		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
+		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
+		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+		   }
+		 }
+	      then posix_mkdir=:
+	      fi
+	      rmdir "$tmpdir/d" "$tmpdir"
+	    else
+	      # Remove any dirs left behind by ancient mkdir implementations.
+	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
+	    fi
+	    trap '' 0;;
+	esac;;
+    esac
+
+    if
+      $posix_mkdir && (
+	umask $mkdir_umask &&
+	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # The umask is ridiculous, or mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+	/*) prefix='/';;
+	[-=\(\)!]*) prefix='./';;
+	*)  prefix='';;
+      esac
+
+      eval "$initialize_posix_glob"
+
+      oIFS=$IFS
+      IFS=/
+      $posix_glob set -f
+      set fnord $dstdir
+      shift
+      $posix_glob set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+	test X"$d" = X && continue
+
+	prefix=$prefix$d
+	if test -d "$prefix"; then
+	  prefixes=
+	else
+	  if $posix_mkdir; then
+	    (umask=$mkdir_umask &&
+	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+	    # Don't fail if two instances are running concurrently.
+	    test -d "$prefix" || exit 1
+	  else
+	    case $prefix in
+	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+	      *) qprefix=$prefix;;
+	    esac
+	    prefixes="$prefixes '$qprefix'"
+	  fi
+	fi
+	prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+	# Don't fail if two instances are running concurrently.
+	(umask $mkdir_umask &&
+	 eval "\$doit_exec \$mkdirprog $prefixes") ||
+	  test -d "$dstdir" || exit 1
+	obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=$dstdir/_inst.$$_
+    rmtmp=$dstdir/_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
+
+       eval "$initialize_posix_glob" &&
+       $posix_glob set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       $posix_glob set +f &&
+
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+	# Now remove or move aside any old file at destination location.
+	# We try this two ways since rm can't unlink itself on some
+	# systems and the destination file might be busy for other
+	# reasons.  In this case, the final cleanup might fail but the new
+	# file should still install successfully.
+	{
+	  test ! -f "$dst" ||
+	  $doit $rmcmd -f "$dst" 2>/dev/null ||
+	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
+	  } ||
+	  { echo "$0: cannot unlink or rename $dst" >&2
+	    (exit 1); exit 1
+	  }
+	} &&
+
+	# Now rename the file to the real destination.
+	$doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/erasure-code/jerasure/jerasure/ltmain.sh b/src/erasure-code/jerasure/jerasure/ltmain.sh
new file mode 100644
index 00000000..c2852d85
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/ltmain.sh
@@ -0,0 +1,9661 @@
+
+# libtool (GNU libtool) 2.4.2
+# Written by Gordon Matzigkeit , 1996
+
+# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
+# 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+# This is free software; see the source for copying conditions.  There is NO
+# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# GNU Libtool is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html,
+# or obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# Usage: $progname [OPTION]... [MODE-ARG]...
+#
+# Provide generalized library-building support services.
+#
+#       --config             show all configuration variables
+#       --debug              enable verbose shell tracing
+#   -n, --dry-run            display commands without modifying any files
+#       --features           display basic configuration information and exit
+#       --mode=MODE          use operation mode MODE
+#       --preserve-dup-deps  don't remove duplicate dependency libraries
+#       --quiet, --silent    don't print informational messages
+#       --no-quiet, --no-silent
+#                            print informational messages (default)
+#       --no-warn            don't display warning messages
+#       --tag=TAG            use configuration variables from tag TAG
+#   -v, --verbose            print more informational messages than default
+#       --no-verbose         don't print the extra informational messages
+#       --version            print version information
+#   -h, --help, --help-all   print short, long, or detailed help message
+#
+# MODE must be one of the following:
+#
+#         clean              remove files from the build directory
+#         compile            compile a source file into a libtool object
+#         execute            automatically set library path, then run a program
+#         finish             complete the installation of libtool libraries
+#         install            install libraries or executables
+#         link               create a library or an executable
+#         uninstall          remove libraries from an installed directory
+#
+# MODE-ARGS vary depending on the MODE.  When passed as first option,
+# `--mode=MODE' may be abbreviated as `MODE' or a unique abbreviation of that.
+# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
+#
+# When reporting a bug, please describe a test case to reproduce it and
+# include the following information:
+#
+#         host-triplet:	$host
+#         shell:		$SHELL
+#         compiler:		$LTCC
+#         compiler flags:		$LTCFLAGS
+#         linker:		$LD (gnu? $with_gnu_ld)
+#         $progname:	(GNU libtool) 2.4.2 Debian-2.4.2-1ubuntu1
+#         automake:	$automake_version
+#         autoconf:	$autoconf_version
+#
+# Report bugs to .
+# GNU libtool home page: .
+# General help using GNU software: .
+
+PROGRAM=libtool
+PACKAGE=libtool
+VERSION="2.4.2 Debian-2.4.2-1ubuntu1"
+TIMESTAMP=""
+package_revision=1.3337
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+$1
+_LTECHO_EOF'
+}
+
+# NLS nuisances: We save the old values to restore during execute mode.
+lt_user_locale=
+lt_safe_locale=
+for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+do
+  eval "if test \"\${$lt_var+set}\" = set; then
+          save_$lt_var=\$$lt_var
+          $lt_var=C
+	  export $lt_var
+	  lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
+	  lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
+	fi"
+done
+LC_ALL=C
+LANGUAGE=C
+export LANGUAGE LC_ALL
+
+$lt_unset CDPATH
+
+
+# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
+# is ksh but when the shell is invoked as "sh" and the current value of
+# the _XPG environment variable is not equal to 1 (one), the special
+# positional parameter $0, within a function call, is the name of the
+# function.
+progpath="$0"
+
+
+
+: ${CP="cp -f"}
+test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
+: ${MAKE="make"}
+: ${MKDIR="mkdir"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
+: ${Xsed="$SED -e 1s/^X//"}
+
+# Global variables:
+EXIT_SUCCESS=0
+EXIT_FAILURE=1
+EXIT_MISMATCH=63  # $? = 63 is used to indicate version mismatch to missing.
+EXIT_SKIP=77	  # $? = 77 is used to indicate a skipped test to automake.
+
+exit_status=$EXIT_SUCCESS
+
+# Make sure IFS has a sensible default
+lt_nl='
+'
+IFS=" 	$lt_nl"
+
+dirname="s,/[^/]*$,,"
+basename="s,^.*/,,"
+
+# func_dirname file append nondir_replacement
+# Compute the dirname of FILE.  If nonempty, add APPEND to the result,
+# otherwise set result to NONDIR_REPLACEMENT.
+func_dirname ()
+{
+    func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
+    if test "X$func_dirname_result" = "X${1}"; then
+      func_dirname_result="${3}"
+    else
+      func_dirname_result="$func_dirname_result${2}"
+    fi
+} # func_dirname may be replaced by extended shell implementation
+
+
+# func_basename file
+func_basename ()
+{
+    func_basename_result=`$ECHO "${1}" | $SED "$basename"`
+} # func_basename may be replaced by extended shell implementation
+
+
+# func_dirname_and_basename file append nondir_replacement
+# perform func_basename and func_dirname in a single function
+# call:
+#   dirname:  Compute the dirname of FILE.  If nonempty,
+#             add APPEND to the result, otherwise set result
+#             to NONDIR_REPLACEMENT.
+#             value returned in "$func_dirname_result"
+#   basename: Compute filename of FILE.
+#             value retuned in "$func_basename_result"
+# Implementation must be kept synchronized with func_dirname
+# and func_basename. For efficiency, we do not delegate to
+# those functions but instead duplicate the functionality here.
+func_dirname_and_basename ()
+{
+    # Extract subdirectory from the argument.
+    func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
+    if test "X$func_dirname_result" = "X${1}"; then
+      func_dirname_result="${3}"
+    else
+      func_dirname_result="$func_dirname_result${2}"
+    fi
+    func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
+} # func_dirname_and_basename may be replaced by extended shell implementation
+
+
+# func_stripname prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+# func_strip_suffix prefix name
+func_stripname ()
+{
+    case ${2} in
+      .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+      *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+    esac
+} # func_stripname may be replaced by extended shell implementation
+
+
+# These SED scripts presuppose an absolute path with a trailing slash.
+pathcar='s,^/\([^/]*\).*$,\1,'
+pathcdr='s,^/[^/]*,,'
+removedotparts=':dotsl
+		s@/\./@/@g
+		t dotsl
+		s,/\.$,/,'
+collapseslashes='s@/\{1,\}@/@g'
+finalslash='s,/*$,/,'
+
+# func_normal_abspath PATH
+# Remove doubled-up and trailing slashes, "." path components,
+# and cancel out any ".." path components in PATH after making
+# it an absolute path.
+#             value returned in "$func_normal_abspath_result"
+func_normal_abspath ()
+{
+  # Start from root dir and reassemble the path.
+  func_normal_abspath_result=
+  func_normal_abspath_tpath=$1
+  func_normal_abspath_altnamespace=
+  case $func_normal_abspath_tpath in
+    "")
+      # Empty path, that just means $cwd.
+      func_stripname '' '/' "`pwd`"
+      func_normal_abspath_result=$func_stripname_result
+      return
+    ;;
+    # The next three entries are used to spot a run of precisely
+    # two leading slashes without using negated character classes;
+    # we take advantage of case's first-match behaviour.
+    ///*)
+      # Unusual form of absolute path, do nothing.
+    ;;
+    //*)
+      # Not necessarily an ordinary path; POSIX reserves leading '//'
+      # and for example Cygwin uses it to access remote file shares
+      # over CIFS/SMB, so we conserve a leading double slash if found.
+      func_normal_abspath_altnamespace=/
+    ;;
+    /*)
+      # Absolute path, do nothing.
+    ;;
+    *)
+      # Relative path, prepend $cwd.
+      func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath
+    ;;
+  esac
+  # Cancel out all the simple stuff to save iterations.  We also want
+  # the path to end with a slash for ease of parsing, so make sure
+  # there is one (and only one) here.
+  func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$removedotparts" -e "$collapseslashes" -e "$finalslash"`
+  while :; do
+    # Processed it all yet?
+    if test "$func_normal_abspath_tpath" = / ; then
+      # If we ascended to the root using ".." the result may be empty now.
+      if test -z "$func_normal_abspath_result" ; then
+        func_normal_abspath_result=/
+      fi
+      break
+    fi
+    func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$pathcar"`
+    func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
+        -e "$pathcdr"`
+    # Figure out what to do with it
+    case $func_normal_abspath_tcomponent in
+      "")
+        # Trailing empty path component, ignore it.
+      ;;
+      ..)
+        # Parent dir; strip last assembled component from result.
+        func_dirname "$func_normal_abspath_result"
+        func_normal_abspath_result=$func_dirname_result
+      ;;
+      *)
+        # Actual path component, append it.
+        func_normal_abspath_result=$func_normal_abspath_result/$func_normal_abspath_tcomponent
+      ;;
+    esac
+  done
+  # Restore leading double-slash if one was found on entry.
+  func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result
+}
+
+# func_relative_path SRCDIR DSTDIR
+# generates a relative path from SRCDIR to DSTDIR, with a trailing
+# slash if non-empty, suitable for immediately appending a filename
+# without needing to append a separator.
+#             value returned in "$func_relative_path_result"
+func_relative_path ()
+{
+  func_relative_path_result=
+  func_normal_abspath "$1"
+  func_relative_path_tlibdir=$func_normal_abspath_result
+  func_normal_abspath "$2"
+  func_relative_path_tbindir=$func_normal_abspath_result
+
+  # Ascend the tree starting from libdir
+  while :; do
+    # check if we have found a prefix of bindir
+    case $func_relative_path_tbindir in
+      $func_relative_path_tlibdir)
+        # found an exact match
+        func_relative_path_tcancelled=
+        break
+        ;;
+      $func_relative_path_tlibdir*)
+        # found a matching prefix
+        func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir"
+        func_relative_path_tcancelled=$func_stripname_result
+        if test -z "$func_relative_path_result"; then
+          func_relative_path_result=.
+        fi
+        break
+        ;;
+      *)
+        func_dirname $func_relative_path_tlibdir
+        func_relative_path_tlibdir=${func_dirname_result}
+        if test "x$func_relative_path_tlibdir" = x ; then
+          # Have to descend all the way to the root!
+          func_relative_path_result=../$func_relative_path_result
+          func_relative_path_tcancelled=$func_relative_path_tbindir
+          break
+        fi
+        func_relative_path_result=../$func_relative_path_result
+        ;;
+    esac
+  done
+
+  # Now calculate path; take care to avoid doubling-up slashes.
+  func_stripname '' '/' "$func_relative_path_result"
+  func_relative_path_result=$func_stripname_result
+  func_stripname '/' '/' "$func_relative_path_tcancelled"
+  if test "x$func_stripname_result" != x ; then
+    func_relative_path_result=${func_relative_path_result}/${func_stripname_result}
+  fi
+
+  # Normalisation. If bindir is libdir, return empty string,
+  # else relative path ending with a slash; either way, target
+  # file name can be directly appended.
+  if test ! -z "$func_relative_path_result"; then
+    func_stripname './' '' "$func_relative_path_result/"
+    func_relative_path_result=$func_stripname_result
+  fi
+}
+
+# The name of this program:
+func_dirname_and_basename "$progpath"
+progname=$func_basename_result
+
+# Make sure we have an absolute path for reexecution:
+case $progpath in
+  [\\/]*|[A-Za-z]:\\*) ;;
+  *[\\/]*)
+     progdir=$func_dirname_result
+     progdir=`cd "$progdir" && pwd`
+     progpath="$progdir/$progname"
+     ;;
+  *)
+     save_IFS="$IFS"
+     IFS=${PATH_SEPARATOR-:}
+     for progdir in $PATH; do
+       IFS="$save_IFS"
+       test -x "$progdir/$progname" && break
+     done
+     IFS="$save_IFS"
+     test -n "$progdir" || progdir=`pwd`
+     progpath="$progdir/$progname"
+     ;;
+esac
+
+# Sed substitution that helps us do robust quoting.  It backslashifies
+# metacharacters that are still active within double-quoted strings.
+Xsed="${SED}"' -e 1s/^X//'
+sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\(["`\\]\)/\\\1/g'
+
+# Sed substitution that turns a string into a regex matching for the
+# string literally.
+sed_make_literal_regex='s,[].[^$\\*\/],\\&,g'
+
+# Sed substitution that converts a w32 file name or path
+# which contains forward slashes, into one that contains
+# (escaped) backslashes.  A very naive implementation.
+lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
+
+# Re-`\' parameter expansions in output of double_quote_subst that were
+# `\'-ed in input to the same.  If an odd number of `\' preceded a '$'
+# in input to double_quote_subst, that '$' was protected from expansion.
+# Since each input `\' is now two `\'s, look for any number of runs of
+# four `\'s followed by two `\'s and then a '$'.  `\' that '$'.
+bs='\\'
+bs2='\\\\'
+bs4='\\\\\\\\'
+dollar='\$'
+sed_double_backslash="\
+  s/$bs4/&\\
+/g
+  s/^$bs2$dollar/$bs&/
+  s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
+  s/\n//g"
+
+# Standard options:
+opt_dry_run=false
+opt_help=false
+opt_quiet=false
+opt_verbose=false
+opt_warning=:
+
+# func_echo arg...
+# Echo program name prefixed message, along with the current mode
+# name if it has been set yet.
+func_echo ()
+{
+    $ECHO "$progname: ${opt_mode+$opt_mode: }$*"
+}
+
+# func_verbose arg...
+# Echo program name prefixed message in verbose mode only.
+func_verbose ()
+{
+    $opt_verbose && func_echo ${1+"$@"}
+
+    # A bug in bash halts the script if the last line of a function
+    # fails when set -e is in force, so we need another command to
+    # work around that:
+    :
+}
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO "$*"
+}
+
+# func_error arg...
+# Echo program name prefixed message to standard error.
+func_error ()
+{
+    $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2
+}
+
+# func_warning arg...
+# Echo program name prefixed warning message to standard error.
+func_warning ()
+{
+    $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2
+
+    # bash bug again:
+    :
+}
+
+# func_fatal_error arg...
+# Echo program name prefixed message to standard error, and exit.
+func_fatal_error ()
+{
+    func_error ${1+"$@"}
+    exit $EXIT_FAILURE
+}
+
+# func_fatal_help arg...
+# Echo program name prefixed message to standard error, followed by
+# a help hint, and exit.
+func_fatal_help ()
+{
+    func_error ${1+"$@"}
+    func_fatal_error "$help"
+}
+help="Try \`$progname --help' for more information."  ## default
+
+
+# func_grep expression filename
+# Check whether EXPRESSION matches any line of FILENAME, without output.
+func_grep ()
+{
+    $GREP "$1" "$2" >/dev/null 2>&1
+}
+
+
+# func_mkdir_p directory-path
+# Make sure the entire path to DIRECTORY-PATH is available.
+func_mkdir_p ()
+{
+    my_directory_path="$1"
+    my_dir_list=
+
+    if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then
+
+      # Protect directory names starting with `-'
+      case $my_directory_path in
+        -*) my_directory_path="./$my_directory_path" ;;
+      esac
+
+      # While some portion of DIR does not yet exist...
+      while test ! -d "$my_directory_path"; do
+        # ...make a list in topmost first order.  Use a colon delimited
+	# list incase some portion of path contains whitespace.
+        my_dir_list="$my_directory_path:$my_dir_list"
+
+        # If the last portion added has no slash in it, the list is done
+        case $my_directory_path in */*) ;; *) break ;; esac
+
+        # ...otherwise throw away the child directory and loop
+        my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"`
+      done
+      my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'`
+
+      save_mkdir_p_IFS="$IFS"; IFS=':'
+      for my_dir in $my_dir_list; do
+	IFS="$save_mkdir_p_IFS"
+        # mkdir can fail with a `File exist' error if two processes
+        # try to create one of the directories concurrently.  Don't
+        # stop in that case!
+        $MKDIR "$my_dir" 2>/dev/null || :
+      done
+      IFS="$save_mkdir_p_IFS"
+
+      # Bail out if we (or some other process) failed to create a directory.
+      test -d "$my_directory_path" || \
+        func_fatal_error "Failed to create \`$1'"
+    fi
+}
+
+
+# func_mktempdir [string]
+# Make a temporary directory that won't clash with other running
+# libtool processes, and avoids race conditions if possible.  If
+# given, STRING is the basename for that directory.
+func_mktempdir ()
+{
+    my_template="${TMPDIR-/tmp}/${1-$progname}"
+
+    if test "$opt_dry_run" = ":"; then
+      # Return a directory name, but don't create it in dry-run mode
+      my_tmpdir="${my_template}-$$"
+    else
+
+      # If mktemp works, use that first and foremost
+      my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`
+
+      if test ! -d "$my_tmpdir"; then
+        # Failing that, at least try and use $RANDOM to avoid a race
+        my_tmpdir="${my_template}-${RANDOM-0}$$"
+
+        save_mktempdir_umask=`umask`
+        umask 0077
+        $MKDIR "$my_tmpdir"
+        umask $save_mktempdir_umask
+      fi
+
+      # If we're not in dry-run mode, bomb out on failure
+      test -d "$my_tmpdir" || \
+        func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
+    fi
+
+    $ECHO "$my_tmpdir"
+}
+
+
+# func_quote_for_eval arg
+# Aesthetically quote ARG to be evaled later.
+# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
+# is double-quoted, suitable for a subsequent eval, whereas
+# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
+# which are still active within double quotes backslashified.
+func_quote_for_eval ()
+{
+    case $1 in
+      *[\\\`\"\$]*)
+	func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;;
+      *)
+        func_quote_for_eval_unquoted_result="$1" ;;
+    esac
+
+    case $func_quote_for_eval_unquoted_result in
+      # Double-quote args containing shell metacharacters to delay
+      # word splitting, command substitution and and variable
+      # expansion for a subsequent eval.
+      # Many Bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
+        ;;
+      *)
+        func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
+    esac
+}
+
+
+# func_quote_for_expand arg
+# Aesthetically quote ARG to be evaled later; same as above,
+# but do not quote variable references.
+func_quote_for_expand ()
+{
+    case $1 in
+      *[\\\`\"]*)
+	my_arg=`$ECHO "$1" | $SED \
+	    -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
+      *)
+        my_arg="$1" ;;
+    esac
+
+    case $my_arg in
+      # Double-quote args containing shell metacharacters to delay
+      # word splitting and command substitution for a subsequent eval.
+      # Many Bourne shells cannot handle close brackets correctly
+      # in scan sets, so we specify it separately.
+      *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \	]*|*]*|"")
+        my_arg="\"$my_arg\""
+        ;;
+    esac
+
+    func_quote_for_expand_result="$my_arg"
+}
+
+
+# func_show_eval cmd [fail_exp]
+# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
+# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.
+func_show_eval ()
+{
+    my_cmd="$1"
+    my_fail_exp="${2-:}"
+
+    ${opt_silent-false} || {
+      func_quote_for_expand "$my_cmd"
+      eval "func_echo $func_quote_for_expand_result"
+    }
+
+    if ${opt_dry_run-false}; then :; else
+      eval "$my_cmd"
+      my_status=$?
+      if test "$my_status" -eq 0; then :; else
+	eval "(exit $my_status); $my_fail_exp"
+      fi
+    fi
+}
+
+
+# func_show_eval_locale cmd [fail_exp]
+# Unless opt_silent is true, then output CMD.  Then, if opt_dryrun is
+# not true, evaluate CMD.  If the evaluation of CMD fails, and FAIL_EXP
+# is given, then evaluate it.  Use the saved locale for evaluation.
+func_show_eval_locale ()
+{
+    my_cmd="$1"
+    my_fail_exp="${2-:}"
+
+    ${opt_silent-false} || {
+      func_quote_for_expand "$my_cmd"
+      eval "func_echo $func_quote_for_expand_result"
+    }
+
+    if ${opt_dry_run-false}; then :; else
+      eval "$lt_user_locale
+	    $my_cmd"
+      my_status=$?
+      eval "$lt_safe_locale"
+      if test "$my_status" -eq 0; then :; else
+	eval "(exit $my_status); $my_fail_exp"
+      fi
+    fi
+}
+
+# func_tr_sh
+# Turn $1 into a string suitable for a shell variable name.
+# Result is stored in $func_tr_sh_result.  All characters
+# not in the set a-zA-Z0-9_ are replaced with '_'. Further,
+# if $1 begins with a digit, a '_' is prepended as well.
+func_tr_sh ()
+{
+  case $1 in
+  [0-9]* | *[!a-zA-Z0-9_]*)
+    func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'`
+    ;;
+  * )
+    func_tr_sh_result=$1
+    ;;
+  esac
+}
+
+
+# func_version
+# Echo version message to standard output and exit.
+func_version ()
+{
+    $opt_debug
+
+    $SED -n '/(C)/!b go
+	:more
+	/\./!{
+	  N
+	  s/\n# / /
+	  b more
+	}
+	:go
+	/^# '$PROGRAM' (GNU /,/# warranty; / {
+        s/^# //
+	s/^# *$//
+        s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
+        p
+     }' < "$progpath"
+     exit $?
+}
+
+# func_usage
+# Echo short help message to standard output and exit.
+func_usage ()
+{
+    $opt_debug
+
+    $SED -n '/^# Usage:/,/^#  *.*--help/ {
+        s/^# //
+	s/^# *$//
+	s/\$progname/'$progname'/
+	p
+    }' < "$progpath"
+    echo
+    $ECHO "run \`$progname --help | more' for full usage"
+    exit $?
+}
+
+# func_help [NOEXIT]
+# Echo long help message to standard output and exit,
+# unless 'noexit' is passed as argument.
+func_help ()
+{
+    $opt_debug
+
+    $SED -n '/^# Usage:/,/# Report bugs to/ {
+	:print
+        s/^# //
+	s/^# *$//
+	s*\$progname*'$progname'*
+	s*\$host*'"$host"'*
+	s*\$SHELL*'"$SHELL"'*
+	s*\$LTCC*'"$LTCC"'*
+	s*\$LTCFLAGS*'"$LTCFLAGS"'*
+	s*\$LD*'"$LD"'*
+	s/\$with_gnu_ld/'"$with_gnu_ld"'/
+	s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/
+	s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/
+	p
+	d
+     }
+     /^# .* home page:/b print
+     /^# General help using/b print
+     ' < "$progpath"
+    ret=$?
+    if test -z "$1"; then
+      exit $ret
+    fi
+}
+
+# func_missing_arg argname
+# Echo program name prefixed message to standard error and set global
+# exit_cmd.
+func_missing_arg ()
+{
+    $opt_debug
+
+    func_error "missing argument for $1."
+    exit_cmd=exit
+}
+
+
+# func_split_short_opt shortopt
+# Set func_split_short_opt_name and func_split_short_opt_arg shell
+# variables after splitting SHORTOPT after the 2nd character.
+func_split_short_opt ()
+{
+    my_sed_short_opt='1s/^\(..\).*$/\1/;q'
+    my_sed_short_rest='1s/^..\(.*\)$/\1/;q'
+
+    func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"`
+    func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"`
+} # func_split_short_opt may be replaced by extended shell implementation
+
+
+# func_split_long_opt longopt
+# Set func_split_long_opt_name and func_split_long_opt_arg shell
+# variables after splitting LONGOPT at the `=' sign.
+func_split_long_opt ()
+{
+    my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
+    my_sed_long_arg='1s/^--[^=]*=//'
+
+    func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"`
+    func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"`
+} # func_split_long_opt may be replaced by extended shell implementation
+
+exit_cmd=:
+
+
+
+
+
+magic="%%%MAGIC variable%%%"
+magic_exe="%%%MAGIC EXE variable%%%"
+
+# Global variables.
+nonopt=
+preserve_args=
+lo2o="s/\\.lo\$/.${objext}/"
+o2lo="s/\\.${objext}\$/.lo/"
+extracted_archives=
+extracted_serial=0
+
+# If this variable is set in any of the actions, the command in it
+# will be execed at the end.  This prevents here-documents from being
+# left over by shells.
+exec_cmd=
+
+# func_append var value
+# Append VALUE to the end of shell variable VAR.
+func_append ()
+{
+    eval "${1}=\$${1}\${2}"
+} # func_append may be replaced by extended shell implementation
+
+# func_append_quoted var value
+# Quote VALUE and append to the end of shell variable VAR, separated
+# by a space.
+func_append_quoted ()
+{
+    func_quote_for_eval "${2}"
+    eval "${1}=\$${1}\\ \$func_quote_for_eval_result"
+} # func_append_quoted may be replaced by extended shell implementation
+
+
+# func_arith arithmetic-term...
+func_arith ()
+{
+    func_arith_result=`expr "${@}"`
+} # func_arith may be replaced by extended shell implementation
+
+
+# func_len string
+# STRING may not start with a hyphen.
+func_len ()
+{
+    func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len`
+} # func_len may be replaced by extended shell implementation
+
+
+# func_lo2o object
+func_lo2o ()
+{
+    func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
+} # func_lo2o may be replaced by extended shell implementation
+
+
+# func_xform libobj-or-source
+func_xform ()
+{
+    func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
+} # func_xform may be replaced by extended shell implementation
+
+
+# func_fatal_configuration arg...
+# Echo program name prefixed message to standard error, followed by
+# a configuration failure hint, and exit.
+func_fatal_configuration ()
+{
+    func_error ${1+"$@"}
+    func_error "See the $PACKAGE documentation for more information."
+    func_fatal_error "Fatal configuration error."
+}
+
+
+# func_config
+# Display the configuration for all the tags in this script.
+func_config ()
+{
+    re_begincf='^# ### BEGIN LIBTOOL'
+    re_endcf='^# ### END LIBTOOL'
+
+    # Default configuration.
+    $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"
+
+    # Now print the configurations for the tags.
+    for tagname in $taglist; do
+      $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
+    done
+
+    exit $?
+}
+
+# func_features
+# Display the features supported by this script.
+func_features ()
+{
+    echo "host: $host"
+    if test "$build_libtool_libs" = yes; then
+      echo "enable shared libraries"
+    else
+      echo "disable shared libraries"
+    fi
+    if test "$build_old_libs" = yes; then
+      echo "enable static libraries"
+    else
+      echo "disable static libraries"
+    fi
+
+    exit $?
+}
+
+# func_enable_tag tagname
+# Verify that TAGNAME is valid, and either flag an error and exit, or
+# enable the TAGNAME tag.  We also add TAGNAME to the global $taglist
+# variable here.
+func_enable_tag ()
+{
+  # Global variable:
+  tagname="$1"
+
+  re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
+  re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
+  sed_extractcf="/$re_begincf/,/$re_endcf/p"
+
+  # Validate tagname.
+  case $tagname in
+    *[!-_A-Za-z0-9,/]*)
+      func_fatal_error "invalid tag name: $tagname"
+      ;;
+  esac
+
+  # Don't test for the "default" C tag, as we know it's
+  # there but not specially marked.
+  case $tagname in
+    CC) ;;
+    *)
+      if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
+	taglist="$taglist $tagname"
+
+	# Evaluate the configuration.  Be careful to quote the path
+	# and the sed script, to avoid splitting on whitespace, but
+	# also don't use non-portable quotes within backquotes within
+	# quotes we have to do it in 2 steps:
+	extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
+	eval "$extractedcf"
+      else
+	func_error "ignoring unknown tag $tagname"
+      fi
+      ;;
+  esac
+}
+
+# func_check_version_match
+# Ensure that we are using m4 macros, and libtool script from the same
+# release of libtool.
+func_check_version_match ()
+{
+  if test "$package_revision" != "$macro_revision"; then
+    if test "$VERSION" != "$macro_version"; then
+      if test -z "$macro_version"; then
+        cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from an older release.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+      else
+        cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, but the
+$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
+$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
+$progname: and run autoconf again.
+_LT_EOF
+      fi
+    else
+      cat >&2 <<_LT_EOF
+$progname: Version mismatch error.  This is $PACKAGE $VERSION, revision $package_revision,
+$progname: but the definition of this LT_INIT comes from revision $macro_revision.
+$progname: You should recreate aclocal.m4 with macros from revision $package_revision
+$progname: of $PACKAGE $VERSION and run autoconf again.
+_LT_EOF
+    fi
+
+    exit $EXIT_MISMATCH
+  fi
+}
+
+
+# Shorthand for --mode=foo, only valid as the first argument
+case $1 in
+clean|clea|cle|cl)
+  shift; set dummy --mode clean ${1+"$@"}; shift
+  ;;
+compile|compil|compi|comp|com|co|c)
+  shift; set dummy --mode compile ${1+"$@"}; shift
+  ;;
+execute|execut|execu|exec|exe|ex|e)
+  shift; set dummy --mode execute ${1+"$@"}; shift
+  ;;
+finish|finis|fini|fin|fi|f)
+  shift; set dummy --mode finish ${1+"$@"}; shift
+  ;;
+install|instal|insta|inst|ins|in|i)
+  shift; set dummy --mode install ${1+"$@"}; shift
+  ;;
+link|lin|li|l)
+  shift; set dummy --mode link ${1+"$@"}; shift
+  ;;
+uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
+  shift; set dummy --mode uninstall ${1+"$@"}; shift
+  ;;
+esac
+
+
+
+# Option defaults:
+opt_debug=:
+opt_dry_run=false
+opt_config=false
+opt_preserve_dup_deps=false
+opt_features=false
+opt_finish=false
+opt_help=false
+opt_help_all=false
+opt_silent=:
+opt_warning=:
+opt_verbose=:
+opt_silent=false
+opt_verbose=false
+
+
+# Parse options once, thoroughly.  This comes as soon as possible in the
+# script to make things like `--version' happen as quickly as we can.
+{
+  # this just eases exit handling
+  while test $# -gt 0; do
+    opt="$1"
+    shift
+    case $opt in
+      --debug|-x)	opt_debug='set -x'
+			func_echo "enabling shell trace mode"
+			$opt_debug
+			;;
+      --dry-run|--dryrun|-n)
+			opt_dry_run=:
+			;;
+      --config)
+			opt_config=:
+func_config
+			;;
+      --dlopen|-dlopen)
+			optarg="$1"
+			opt_dlopen="${opt_dlopen+$opt_dlopen
+}$optarg"
+			shift
+			;;
+      --preserve-dup-deps)
+			opt_preserve_dup_deps=:
+			;;
+      --features)
+			opt_features=:
+func_features
+			;;
+      --finish)
+			opt_finish=:
+set dummy --mode finish ${1+"$@"}; shift
+			;;
+      --help)
+			opt_help=:
+			;;
+      --help-all)
+			opt_help_all=:
+opt_help=': help-all'
+			;;
+      --mode)
+			test $# = 0 && func_missing_arg $opt && break
+			optarg="$1"
+			opt_mode="$optarg"
+case $optarg in
+  # Valid mode arguments:
+  clean|compile|execute|finish|install|link|relink|uninstall) ;;
+
+  # Catch anything else as an error
+  *) func_error "invalid argument for $opt"
+     exit_cmd=exit
+     break
+     ;;
+esac
+			shift
+			;;
+      --no-silent|--no-quiet)
+			opt_silent=false
+func_append preserve_args " $opt"
+			;;
+      --no-warning|--no-warn)
+			opt_warning=false
+func_append preserve_args " $opt"
+			;;
+      --no-verbose)
+			opt_verbose=false
+func_append preserve_args " $opt"
+			;;
+      --silent|--quiet)
+			opt_silent=:
+func_append preserve_args " $opt"
+        opt_verbose=false
+			;;
+      --verbose|-v)
+			opt_verbose=:
+func_append preserve_args " $opt"
+opt_silent=false
+			;;
+      --tag)
+			test $# = 0 && func_missing_arg $opt && break
+			optarg="$1"
+			opt_tag="$optarg"
+func_append preserve_args " $opt $optarg"
+func_enable_tag "$optarg"
+			shift
+			;;
+
+      -\?|-h)		func_usage				;;
+      --help)		func_help				;;
+      --version)	func_version				;;
+
+      # Separate optargs to long options:
+      --*=*)
+			func_split_long_opt "$opt"
+			set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"}
+			shift
+			;;
+
+      # Separate non-argument short options:
+      -\?*|-h*|-n*|-v*)
+			func_split_short_opt "$opt"
+			set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"}
+			shift
+			;;
+
+      --)		break					;;
+      -*)		func_fatal_help "unrecognized option \`$opt'" ;;
+      *)		set dummy "$opt" ${1+"$@"};	shift; break  ;;
+    esac
+  done
+
+  # Validate options:
+
+  # save first non-option argument
+  if test "$#" -gt 0; then
+    nonopt="$opt"
+    shift
+  fi
+
+  # preserve --debug
+  test "$opt_debug" = : || func_append preserve_args " --debug"
+
+  case $host in
+    *cygwin* | *mingw* | *pw32* | *cegcc*)
+      # don't eliminate duplications in $postdeps and $predeps
+      opt_duplicate_compiler_generated_deps=:
+      ;;
+    *)
+      opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps
+      ;;
+  esac
+
+  $opt_help || {
+    # Sanity checks first:
+    func_check_version_match
+
+    if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
+      func_fatal_configuration "not configured to build any kind of library"
+    fi
+
+    # Darwin sucks
+    eval std_shrext=\"$shrext_cmds\"
+
+    # Only execute mode is allowed to have -dlopen flags.
+    if test -n "$opt_dlopen" && test "$opt_mode" != execute; then
+      func_error "unrecognized option \`-dlopen'"
+      $ECHO "$help" 1>&2
+      exit $EXIT_FAILURE
+    fi
+
+    # Change the help message to a mode-specific one.
+    generic_help="$help"
+    help="Try \`$progname --help --mode=$opt_mode' for more information."
+  }
+
+
+  # Bail if the options were screwed
+  $exit_cmd $EXIT_FAILURE
+}
+
+
+
+
+## ----------- ##
+##    Main.    ##
+## ----------- ##
+
+# func_lalib_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_lalib_p ()
+{
+    test -f "$1" &&
+      $SED -e 4q "$1" 2>/dev/null \
+        | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
+}
+
+# func_lalib_unsafe_p file
+# True iff FILE is a libtool `.la' library or `.lo' object file.
+# This function implements the same check as func_lalib_p without
+# resorting to external programs.  To this end, it redirects stdin and
+# closes it afterwards, without saving the original file descriptor.
+# As a safety measure, use it only where a negative result would be
+# fatal anyway.  Works if `file' does not exist.
+func_lalib_unsafe_p ()
+{
+    lalib_p=no
+    if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
+	for lalib_p_l in 1 2 3 4
+	do
+	    read lalib_p_line
+	    case "$lalib_p_line" in
+		\#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
+	    esac
+	done
+	exec 0<&5 5<&-
+    fi
+    test "$lalib_p" = yes
+}
+
+# func_ltwrapper_script_p file
+# True iff FILE is a libtool wrapper script
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_script_p ()
+{
+    func_lalib_p "$1"
+}
+
+# func_ltwrapper_executable_p file
+# True iff FILE is a libtool wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_executable_p ()
+{
+    func_ltwrapper_exec_suffix=
+    case $1 in
+    *.exe) ;;
+    *) func_ltwrapper_exec_suffix=.exe ;;
+    esac
+    $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
+}
+
+# func_ltwrapper_scriptname file
+# Assumes file is an ltwrapper_executable
+# uses $file to determine the appropriate filename for a
+# temporary ltwrapper_script.
+func_ltwrapper_scriptname ()
+{
+    func_dirname_and_basename "$1" "" "."
+    func_stripname '' '.exe' "$func_basename_result"
+    func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
+}
+
+# func_ltwrapper_p file
+# True iff FILE is a libtool wrapper script or wrapper executable
+# This function is only a basic sanity check; it will hardly flush out
+# determined imposters.
+func_ltwrapper_p ()
+{
+    func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
+}
+
+
+# func_execute_cmds commands fail_cmd
+# Execute tilde-delimited COMMANDS.
+# If FAIL_CMD is given, eval that upon failure.
+# FAIL_CMD may read-access the current command in variable CMD!
+func_execute_cmds ()
+{
+    $opt_debug
+    save_ifs=$IFS; IFS='~'
+    for cmd in $1; do
+      IFS=$save_ifs
+      eval cmd=\"$cmd\"
+      func_show_eval "$cmd" "${2-:}"
+    done
+    IFS=$save_ifs
+}
+
+
+# func_source file
+# Source FILE, adding directory component if necessary.
+# Note that it is not necessary on cygwin/mingw to append a dot to
+# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
+# behavior happens only for exec(3), not for open(2)!  Also, sourcing
+# `FILE.' does not work on cygwin managed mounts.
+func_source ()
+{
+    $opt_debug
+    case $1 in
+    */* | *\\*)	. "$1" ;;
+    *)		. "./$1" ;;
+    esac
+}
+
+
+# func_resolve_sysroot PATH
+# Replace a leading = in PATH with a sysroot.  Store the result into
+# func_resolve_sysroot_result
+func_resolve_sysroot ()
+{
+  func_resolve_sysroot_result=$1
+  case $func_resolve_sysroot_result in
+  =*)
+    func_stripname '=' '' "$func_resolve_sysroot_result"
+    func_resolve_sysroot_result=$lt_sysroot$func_stripname_result
+    ;;
+  esac
+}
+
+# func_replace_sysroot PATH
+# If PATH begins with the sysroot, replace it with = and
+# store the result into func_replace_sysroot_result.
+func_replace_sysroot ()
+{
+  case "$lt_sysroot:$1" in
+  ?*:"$lt_sysroot"*)
+    func_stripname "$lt_sysroot" '' "$1"
+    func_replace_sysroot_result="=$func_stripname_result"
+    ;;
+  *)
+    # Including no sysroot.
+    func_replace_sysroot_result=$1
+    ;;
+  esac
+}
+
+# func_infer_tag arg
+# Infer tagged configuration to use if any are available and
+# if one wasn't chosen via the "--tag" command line option.
+# Only attempt this if the compiler in the base compile
+# command doesn't match the default compiler.
+# arg is usually of the form 'gcc ...'
+func_infer_tag ()
+{
+    $opt_debug
+    if test -n "$available_tags" && test -z "$tagname"; then
+      CC_quoted=
+      for arg in $CC; do
+	func_append_quoted CC_quoted "$arg"
+      done
+      CC_expanded=`func_echo_all $CC`
+      CC_quoted_expanded=`func_echo_all $CC_quoted`
+      case $@ in
+      # Blanks in the command may have been stripped by the calling shell,
+      # but not from the CC environment variable when configure was run.
+      " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
+      " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;;
+      # Blanks at the start of $base_compile will cause this to fail
+      # if we don't check for them as well.
+      *)
+	for z in $available_tags; do
+	  if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
+	    # Evaluate the configuration.
+	    eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
+	    CC_quoted=
+	    for arg in $CC; do
+	      # Double-quote args containing other shell metacharacters.
+	      func_append_quoted CC_quoted "$arg"
+	    done
+	    CC_expanded=`func_echo_all $CC`
+	    CC_quoted_expanded=`func_echo_all $CC_quoted`
+	    case "$@ " in
+	    " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
+	    " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*)
+	      # The compiler in the base compile command matches
+	      # the one in the tagged configuration.
+	      # Assume this is the tagged configuration we want.
+	      tagname=$z
+	      break
+	      ;;
+	    esac
+	  fi
+	done
+	# If $tagname still isn't set, then no tagged configuration
+	# was found and let the user know that the "--tag" command
+	# line option must be used.
+	if test -z "$tagname"; then
+	  func_echo "unable to infer tagged configuration"
+	  func_fatal_error "specify a tag with \`--tag'"
+#	else
+#	  func_verbose "using $tagname tagged configuration"
+	fi
+	;;
+      esac
+    fi
+}
+
+
+
+# func_write_libtool_object output_name pic_name nonpic_name
+# Create a libtool object file (analogous to a ".la" file),
+# but don't create it if we're doing a dry run.
+func_write_libtool_object ()
+{
+    write_libobj=${1}
+    if test "$build_libtool_libs" = yes; then
+      write_lobj=\'${2}\'
+    else
+      write_lobj=none
+    fi
+
+    if test "$build_old_libs" = yes; then
+      write_oldobj=\'${3}\'
+    else
+      write_oldobj=none
+    fi
+
+    $opt_dry_run || {
+      cat >${write_libobj}T </dev/null`
+    if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then
+      func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" |
+        $SED -e "$lt_sed_naive_backslashify"`
+    else
+      func_convert_core_file_wine_to_w32_result=
+    fi
+  fi
+}
+# end: func_convert_core_file_wine_to_w32
+
+
+# func_convert_core_path_wine_to_w32 ARG
+# Helper function used by path conversion functions when $build is *nix, and
+# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly
+# configured wine environment available, with the winepath program in $build's
+# $PATH. Assumes ARG has no leading or trailing path separator characters.
+#
+# ARG is path to be converted from $build format to win32.
+# Result is available in $func_convert_core_path_wine_to_w32_result.
+# Unconvertible file (directory) names in ARG are skipped; if no directory names
+# are convertible, then the result may be empty.
+func_convert_core_path_wine_to_w32 ()
+{
+  $opt_debug
+  # unfortunately, winepath doesn't convert paths, only file names
+  func_convert_core_path_wine_to_w32_result=""
+  if test -n "$1"; then
+    oldIFS=$IFS
+    IFS=:
+    for func_convert_core_path_wine_to_w32_f in $1; do
+      IFS=$oldIFS
+      func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f"
+      if test -n "$func_convert_core_file_wine_to_w32_result" ; then
+        if test -z "$func_convert_core_path_wine_to_w32_result"; then
+          func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result"
+        else
+          func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result"
+        fi
+      fi
+    done
+    IFS=$oldIFS
+  fi
+}
+# end: func_convert_core_path_wine_to_w32
+
+
+# func_cygpath ARGS...
+# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when
+# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2)
+# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or
+# (2), returns the Cygwin file name or path in func_cygpath_result (input
+# file name or path is assumed to be in w32 format, as previously converted
+# from $build's *nix or MSYS format). In case (3), returns the w32 file name
+# or path in func_cygpath_result (input file name or path is assumed to be in
+# Cygwin format). Returns an empty string on error.
+#
+# ARGS are passed to cygpath, with the last one being the file name or path to
+# be converted.
+#
+# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH
+# environment variable; do not put it in $PATH.
+func_cygpath ()
+{
+  $opt_debug
+  if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then
+    func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null`
+    if test "$?" -ne 0; then
+      # on failure, ensure result is empty
+      func_cygpath_result=
+    fi
+  else
+    func_cygpath_result=
+    func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'"
+  fi
+}
+#end: func_cygpath
+
+
+# func_convert_core_msys_to_w32 ARG
+# Convert file name or path ARG from MSYS format to w32 format.  Return
+# result in func_convert_core_msys_to_w32_result.
+func_convert_core_msys_to_w32 ()
+{
+  $opt_debug
+  # awkward: cmd appends spaces to result
+  func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null |
+    $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
+}
+#end: func_convert_core_msys_to_w32
+
+
+# func_convert_file_check ARG1 ARG2
+# Verify that ARG1 (a file name in $build format) was converted to $host
+# format in ARG2. Otherwise, emit an error message, but continue (resetting
+# func_to_host_file_result to ARG1).
+func_convert_file_check ()
+{
+  $opt_debug
+  if test -z "$2" && test -n "$1" ; then
+    func_error "Could not determine host file name corresponding to"
+    func_error "  \`$1'"
+    func_error "Continuing, but uninstalled executables may not work."
+    # Fallback:
+    func_to_host_file_result="$1"
+  fi
+}
+# end func_convert_file_check
+
+
+# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH
+# Verify that FROM_PATH (a path in $build format) was converted to $host
+# format in TO_PATH. Otherwise, emit an error message, but continue, resetting
+# func_to_host_file_result to a simplistic fallback value (see below).
+func_convert_path_check ()
+{
+  $opt_debug
+  if test -z "$4" && test -n "$3"; then
+    func_error "Could not determine the host path corresponding to"
+    func_error "  \`$3'"
+    func_error "Continuing, but uninstalled executables may not work."
+    # Fallback.  This is a deliberately simplistic "conversion" and
+    # should not be "improved".  See libtool.info.
+    if test "x$1" != "x$2"; then
+      lt_replace_pathsep_chars="s|$1|$2|g"
+      func_to_host_path_result=`echo "$3" |
+        $SED -e "$lt_replace_pathsep_chars"`
+    else
+      func_to_host_path_result="$3"
+    fi
+  fi
+}
+# end func_convert_path_check
+
+
+# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG
+# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT
+# and appending REPL if ORIG matches BACKPAT.
+func_convert_path_front_back_pathsep ()
+{
+  $opt_debug
+  case $4 in
+  $1 ) func_to_host_path_result="$3$func_to_host_path_result"
+    ;;
+  esac
+  case $4 in
+  $2 ) func_append func_to_host_path_result "$3"
+    ;;
+  esac
+}
+# end func_convert_path_front_back_pathsep
+
+
+##################################################
+# $build to $host FILE NAME CONVERSION FUNCTIONS #
+##################################################
+# invoked via `$to_host_file_cmd ARG'
+#
+# In each case, ARG is the path to be converted from $build to $host format.
+# Result will be available in $func_to_host_file_result.
+
+
+# func_to_host_file ARG
+# Converts the file name ARG from $build format to $host format. Return result
+# in func_to_host_file_result.
+func_to_host_file ()
+{
+  $opt_debug
+  $to_host_file_cmd "$1"
+}
+# end func_to_host_file
+
+
+# func_to_tool_file ARG LAZY
+# converts the file name ARG from $build format to toolchain format. Return
+# result in func_to_tool_file_result.  If the conversion in use is listed
+# in (the comma separated) LAZY, no conversion takes place.
+func_to_tool_file ()
+{
+  $opt_debug
+  case ,$2, in
+    *,"$to_tool_file_cmd",*)
+      func_to_tool_file_result=$1
+      ;;
+    *)
+      $to_tool_file_cmd "$1"
+      func_to_tool_file_result=$func_to_host_file_result
+      ;;
+  esac
+}
+# end func_to_tool_file
+
+
+# func_convert_file_noop ARG
+# Copy ARG to func_to_host_file_result.
+func_convert_file_noop ()
+{
+  func_to_host_file_result="$1"
+}
+# end func_convert_file_noop
+
+
+# func_convert_file_msys_to_w32 ARG
+# Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic
+# conversion to w32 is not available inside the cwrapper.  Returns result in
+# func_to_host_file_result.
+func_convert_file_msys_to_w32 ()
+{
+  $opt_debug
+  func_to_host_file_result="$1"
+  if test -n "$1"; then
+    func_convert_core_msys_to_w32 "$1"
+    func_to_host_file_result="$func_convert_core_msys_to_w32_result"
+  fi
+  func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_msys_to_w32
+
+
+# func_convert_file_cygwin_to_w32 ARG
+# Convert file name ARG from Cygwin to w32 format.  Returns result in
+# func_to_host_file_result.
+func_convert_file_cygwin_to_w32 ()
+{
+  $opt_debug
+  func_to_host_file_result="$1"
+  if test -n "$1"; then
+    # because $build is cygwin, we call "the" cygpath in $PATH; no need to use
+    # LT_CYGPATH in this case.
+    func_to_host_file_result=`cygpath -m "$1"`
+  fi
+  func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_cygwin_to_w32
+
+
+# func_convert_file_nix_to_w32 ARG
+# Convert file name ARG from *nix to w32 format.  Requires a wine environment
+# and a working winepath. Returns result in func_to_host_file_result.
+func_convert_file_nix_to_w32 ()
+{
+  $opt_debug
+  func_to_host_file_result="$1"
+  if test -n "$1"; then
+    func_convert_core_file_wine_to_w32 "$1"
+    func_to_host_file_result="$func_convert_core_file_wine_to_w32_result"
+  fi
+  func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_nix_to_w32
+
+
+# func_convert_file_msys_to_cygwin ARG
+# Convert file name ARG from MSYS to Cygwin format.  Requires LT_CYGPATH set.
+# Returns result in func_to_host_file_result.
+func_convert_file_msys_to_cygwin ()
+{
+  $opt_debug
+  func_to_host_file_result="$1"
+  if test -n "$1"; then
+    func_convert_core_msys_to_w32 "$1"
+    func_cygpath -u "$func_convert_core_msys_to_w32_result"
+    func_to_host_file_result="$func_cygpath_result"
+  fi
+  func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_msys_to_cygwin
+
+
+# func_convert_file_nix_to_cygwin ARG
+# Convert file name ARG from *nix to Cygwin format.  Requires Cygwin installed
+# in a wine environment, working winepath, and LT_CYGPATH set.  Returns result
+# in func_to_host_file_result.
+func_convert_file_nix_to_cygwin ()
+{
+  $opt_debug
+  func_to_host_file_result="$1"
+  if test -n "$1"; then
+    # convert from *nix to w32, then use cygpath to convert from w32 to cygwin.
+    func_convert_core_file_wine_to_w32 "$1"
+    func_cygpath -u "$func_convert_core_file_wine_to_w32_result"
+    func_to_host_file_result="$func_cygpath_result"
+  fi
+  func_convert_file_check "$1" "$func_to_host_file_result"
+}
+# end func_convert_file_nix_to_cygwin
+
+
+#############################################
+# $build to $host PATH CONVERSION FUNCTIONS #
+#############################################
+# invoked via `$to_host_path_cmd ARG'
+#
+# In each case, ARG is the path to be converted from $build to $host format.
+# The result will be available in $func_to_host_path_result.
+#
+# Path separators are also converted from $build format to $host format.  If
+# ARG begins or ends with a path separator character, it is preserved (but
+# converted to $host format) on output.
+#
+# All path conversion functions are named using the following convention:
+#   file name conversion function    : func_convert_file_X_to_Y ()
+#   path conversion function         : func_convert_path_X_to_Y ()
+# where, for any given $build/$host combination the 'X_to_Y' value is the
+# same.  If conversion functions are added for new $build/$host combinations,
+# the two new functions must follow this pattern, or func_init_to_host_path_cmd
+# will break.
+
+
+# func_init_to_host_path_cmd
+# Ensures that function "pointer" variable $to_host_path_cmd is set to the
+# appropriate value, based on the value of $to_host_file_cmd.
+to_host_path_cmd=
+func_init_to_host_path_cmd ()
+{
+  $opt_debug
+  if test -z "$to_host_path_cmd"; then
+    func_stripname 'func_convert_file_' '' "$to_host_file_cmd"
+    to_host_path_cmd="func_convert_path_${func_stripname_result}"
+  fi
+}
+
+
+# func_to_host_path ARG
+# Converts the path ARG from $build format to $host format. Return result
+# in func_to_host_path_result.
+func_to_host_path ()
+{
+  $opt_debug
+  func_init_to_host_path_cmd
+  $to_host_path_cmd "$1"
+}
+# end func_to_host_path
+
+
+# func_convert_path_noop ARG
+# Copy ARG to func_to_host_path_result.
+func_convert_path_noop ()
+{
+  func_to_host_path_result="$1"
+}
+# end func_convert_path_noop
+
+
+# func_convert_path_msys_to_w32 ARG
+# Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic
+# conversion to w32 is not available inside the cwrapper.  Returns result in
+# func_to_host_path_result.
+func_convert_path_msys_to_w32 ()
+{
+  $opt_debug
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    # Remove leading and trailing path separator characters from ARG.  MSYS
+    # behavior is inconsistent here; cygpath turns them into '.;' and ';.';
+    # and winepath ignores them completely.
+    func_stripname : : "$1"
+    func_to_host_path_tmp1=$func_stripname_result
+    func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
+    func_to_host_path_result="$func_convert_core_msys_to_w32_result"
+    func_convert_path_check : ";" \
+      "$func_to_host_path_tmp1" "$func_to_host_path_result"
+    func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+  fi
+}
+# end func_convert_path_msys_to_w32
+
+
+# func_convert_path_cygwin_to_w32 ARG
+# Convert path ARG from Cygwin to w32 format.  Returns result in
+# func_to_host_file_result.
+func_convert_path_cygwin_to_w32 ()
+{
+  $opt_debug
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    # See func_convert_path_msys_to_w32:
+    func_stripname : : "$1"
+    func_to_host_path_tmp1=$func_stripname_result
+    func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"`
+    func_convert_path_check : ";" \
+      "$func_to_host_path_tmp1" "$func_to_host_path_result"
+    func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+  fi
+}
+# end func_convert_path_cygwin_to_w32
+
+
+# func_convert_path_nix_to_w32 ARG
+# Convert path ARG from *nix to w32 format.  Requires a wine environment and
+# a working winepath.  Returns result in func_to_host_file_result.
+func_convert_path_nix_to_w32 ()
+{
+  $opt_debug
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    # See func_convert_path_msys_to_w32:
+    func_stripname : : "$1"
+    func_to_host_path_tmp1=$func_stripname_result
+    func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
+    func_to_host_path_result="$func_convert_core_path_wine_to_w32_result"
+    func_convert_path_check : ";" \
+      "$func_to_host_path_tmp1" "$func_to_host_path_result"
+    func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
+  fi
+}
+# end func_convert_path_nix_to_w32
+
+
+# func_convert_path_msys_to_cygwin ARG
+# Convert path ARG from MSYS to Cygwin format.  Requires LT_CYGPATH set.
+# Returns result in func_to_host_file_result.
+func_convert_path_msys_to_cygwin ()
+{
+  $opt_debug
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    # See func_convert_path_msys_to_w32:
+    func_stripname : : "$1"
+    func_to_host_path_tmp1=$func_stripname_result
+    func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
+    func_cygpath -u -p "$func_convert_core_msys_to_w32_result"
+    func_to_host_path_result="$func_cygpath_result"
+    func_convert_path_check : : \
+      "$func_to_host_path_tmp1" "$func_to_host_path_result"
+    func_convert_path_front_back_pathsep ":*" "*:" : "$1"
+  fi
+}
+# end func_convert_path_msys_to_cygwin
+
+
+# func_convert_path_nix_to_cygwin ARG
+# Convert path ARG from *nix to Cygwin format.  Requires Cygwin installed in a
+# a wine environment, working winepath, and LT_CYGPATH set.  Returns result in
+# func_to_host_file_result.
+func_convert_path_nix_to_cygwin ()
+{
+  $opt_debug
+  func_to_host_path_result="$1"
+  if test -n "$1"; then
+    # Remove leading and trailing path separator characters from
+    # ARG. msys behavior is inconsistent here, cygpath turns them
+    # into '.;' and ';.', and winepath ignores them completely.
+    func_stripname : : "$1"
+    func_to_host_path_tmp1=$func_stripname_result
+    func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
+    func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result"
+    func_to_host_path_result="$func_cygpath_result"
+    func_convert_path_check : : \
+      "$func_to_host_path_tmp1" "$func_to_host_path_result"
+    func_convert_path_front_back_pathsep ":*" "*:" : "$1"
+  fi
+}
+# end func_convert_path_nix_to_cygwin
+
+
+# func_mode_compile arg...
+func_mode_compile ()
+{
+    $opt_debug
+    # Get the compilation command and the source file.
+    base_compile=
+    srcfile="$nonopt"  #  always keep a non-empty value in "srcfile"
+    suppress_opt=yes
+    suppress_output=
+    arg_mode=normal
+    libobj=
+    later=
+    pie_flag=
+
+    for arg
+    do
+      case $arg_mode in
+      arg  )
+	# do not "continue".  Instead, add this to base_compile
+	lastarg="$arg"
+	arg_mode=normal
+	;;
+
+      target )
+	libobj="$arg"
+	arg_mode=normal
+	continue
+	;;
+
+      normal )
+	# Accept any command-line options.
+	case $arg in
+	-o)
+	  test -n "$libobj" && \
+	    func_fatal_error "you cannot specify \`-o' more than once"
+	  arg_mode=target
+	  continue
+	  ;;
+
+	-pie | -fpie | -fPIE)
+          func_append pie_flag " $arg"
+	  continue
+	  ;;
+
+	-shared | -static | -prefer-pic | -prefer-non-pic)
+	  func_append later " $arg"
+	  continue
+	  ;;
+
+	-no-suppress)
+	  suppress_opt=no
+	  continue
+	  ;;
+
+	-Xcompiler)
+	  arg_mode=arg  #  the next one goes into the "base_compile" arg list
+	  continue      #  The current "srcfile" will either be retained or
+	  ;;            #  replaced later.  I would guess that would be a bug.
+
+	-Wc,*)
+	  func_stripname '-Wc,' '' "$arg"
+	  args=$func_stripname_result
+	  lastarg=
+	  save_ifs="$IFS"; IFS=','
+	  for arg in $args; do
+	    IFS="$save_ifs"
+	    func_append_quoted lastarg "$arg"
+	  done
+	  IFS="$save_ifs"
+	  func_stripname ' ' '' "$lastarg"
+	  lastarg=$func_stripname_result
+
+	  # Add the arguments to base_compile.
+	  func_append base_compile " $lastarg"
+	  continue
+	  ;;
+
+	*)
+	  # Accept the current argument as the source file.
+	  # The previous "srcfile" becomes the current argument.
+	  #
+	  lastarg="$srcfile"
+	  srcfile="$arg"
+	  ;;
+	esac  #  case $arg
+	;;
+      esac    #  case $arg_mode
+
+      # Aesthetically quote the previous argument.
+      func_append_quoted base_compile "$lastarg"
+    done # for arg
+
+    case $arg_mode in
+    arg)
+      func_fatal_error "you must specify an argument for -Xcompile"
+      ;;
+    target)
+      func_fatal_error "you must specify a target with \`-o'"
+      ;;
+    *)
+      # Get the name of the library object.
+      test -z "$libobj" && {
+	func_basename "$srcfile"
+	libobj="$func_basename_result"
+      }
+      ;;
+    esac
+
+    # Recognize several different file suffixes.
+    # If the user specifies -o file.o, it is replaced with file.lo
+    case $libobj in
+    *.[cCFSifmso] | \
+    *.ada | *.adb | *.ads | *.asm | \
+    *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
+    *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup)
+      func_xform "$libobj"
+      libobj=$func_xform_result
+      ;;
+    esac
+
+    case $libobj in
+    *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
+    *)
+      func_fatal_error "cannot determine name of library object from \`$libobj'"
+      ;;
+    esac
+
+    func_infer_tag $base_compile
+
+    for arg in $later; do
+      case $arg in
+      -shared)
+	test "$build_libtool_libs" != yes && \
+	  func_fatal_configuration "can not build a shared library"
+	build_old_libs=no
+	continue
+	;;
+
+      -static)
+	build_libtool_libs=no
+	build_old_libs=yes
+	continue
+	;;
+
+      -prefer-pic)
+	pic_mode=yes
+	continue
+	;;
+
+      -prefer-non-pic)
+	pic_mode=no
+	continue
+	;;
+      esac
+    done
+
+    func_quote_for_eval "$libobj"
+    test "X$libobj" != "X$func_quote_for_eval_result" \
+      && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"'	 &()|`$[]' \
+      && func_warning "libobj name \`$libobj' may not contain shell special characters."
+    func_dirname_and_basename "$obj" "/" ""
+    objname="$func_basename_result"
+    xdir="$func_dirname_result"
+    lobj=${xdir}$objdir/$objname
+
+    test -z "$base_compile" && \
+      func_fatal_help "you must specify a compilation command"
+
+    # Delete any leftover library objects.
+    if test "$build_old_libs" = yes; then
+      removelist="$obj $lobj $libobj ${libobj}T"
+    else
+      removelist="$lobj $libobj ${libobj}T"
+    fi
+
+    # On Cygwin there's no "real" PIC flag so we must build both object types
+    case $host_os in
+    cygwin* | mingw* | pw32* | os2* | cegcc*)
+      pic_mode=default
+      ;;
+    esac
+    if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
+      # non-PIC code in shared libraries is not supported
+      pic_mode=default
+    fi
+
+    # Calculate the filename of the output object if compiler does
+    # not support -o with -c
+    if test "$compiler_c_o" = no; then
+      output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.${objext}
+      lockfile="$output_obj.lock"
+    else
+      output_obj=
+      need_locks=no
+      lockfile=
+    fi
+
+    # Lock this critical section if it is needed
+    # We use this script file to make the link, it avoids creating a new file
+    if test "$need_locks" = yes; then
+      until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+	func_echo "Waiting for $lockfile to be removed"
+	sleep 2
+      done
+    elif test "$need_locks" = warn; then
+      if test -f "$lockfile"; then
+	$ECHO "\
+*** ERROR, $lockfile exists and contains:
+`cat $lockfile 2>/dev/null`
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+      func_append removelist " $output_obj"
+      $ECHO "$srcfile" > "$lockfile"
+    fi
+
+    $opt_dry_run || $RM $removelist
+    func_append removelist " $lockfile"
+    trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
+
+    func_to_tool_file "$srcfile" func_convert_file_msys_to_w32
+    srcfile=$func_to_tool_file_result
+    func_quote_for_eval "$srcfile"
+    qsrcfile=$func_quote_for_eval_result
+
+    # Only build a PIC object if we are building libtool libraries.
+    if test "$build_libtool_libs" = yes; then
+      # Without this assignment, base_compile gets emptied.
+      fbsd_hideous_sh_bug=$base_compile
+
+      if test "$pic_mode" != no; then
+	command="$base_compile $qsrcfile $pic_flag"
+      else
+	# Don't build PIC code
+	command="$base_compile $qsrcfile"
+      fi
+
+      func_mkdir_p "$xdir$objdir"
+
+      if test -z "$output_obj"; then
+	# Place PIC objects in $objdir
+	func_append command " -o $lobj"
+      fi
+
+      func_show_eval_locale "$command"	\
+          'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE'
+
+      if test "$need_locks" = warn &&
+	 test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+	$ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+
+      # Just move the object if needed, then go on to compile the next one
+      if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then
+	func_show_eval '$MV "$output_obj" "$lobj"' \
+	  'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+      fi
+
+      # Allow error messages only from the first compilation.
+      if test "$suppress_opt" = yes; then
+	suppress_output=' >/dev/null 2>&1'
+      fi
+    fi
+
+    # Only build a position-dependent object if we build old libraries.
+    if test "$build_old_libs" = yes; then
+      if test "$pic_mode" != yes; then
+	# Don't build PIC code
+	command="$base_compile $qsrcfile$pie_flag"
+      else
+	command="$base_compile $qsrcfile $pic_flag"
+      fi
+      if test "$compiler_c_o" = yes; then
+	func_append command " -o $obj"
+      fi
+
+      # Suppress compiler output if we already did a PIC compilation.
+      func_append command "$suppress_output"
+      func_show_eval_locale "$command" \
+        '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
+
+      if test "$need_locks" = warn &&
+	 test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
+	$ECHO "\
+*** ERROR, $lockfile contains:
+`cat $lockfile 2>/dev/null`
+
+but it should contain:
+$srcfile
+
+This indicates that another process is trying to use the same
+temporary object file, and libtool could not work around it because
+your compiler does not support \`-c' and \`-o' together.  If you
+repeat this compilation, it may succeed, by chance, but you had better
+avoid parallel builds (make -j) in this platform, or get a better
+compiler."
+
+	$opt_dry_run || $RM $removelist
+	exit $EXIT_FAILURE
+      fi
+
+      # Just move the object if needed
+      if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then
+	func_show_eval '$MV "$output_obj" "$obj"' \
+	  'error=$?; $opt_dry_run || $RM $removelist; exit $error'
+      fi
+    fi
+
+    $opt_dry_run || {
+      func_write_libtool_object "$libobj" "$objdir/$objname" "$objname"
+
+      # Unlock the critical section if it was locked
+      if test "$need_locks" != no; then
+	removelist=$lockfile
+        $RM "$lockfile"
+      fi
+    }
+
+    exit $EXIT_SUCCESS
+}
+
+$opt_help || {
+  test "$opt_mode" = compile && func_mode_compile ${1+"$@"}
+}
+
+func_mode_help ()
+{
+    # We need to display help for each of the modes.
+    case $opt_mode in
+      "")
+        # Generic help is extracted from the usage comments
+        # at the start of this file.
+        func_help
+        ;;
+
+      clean)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE...
+
+Remove files from the build directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm').  RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, object or program, all the files associated
+with it are deleted. Otherwise, only FILE itself is deleted using RM."
+        ;;
+
+      compile)
+      $ECHO \
+"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE
+
+Compile a source file into a libtool library object.
+
+This mode accepts the following additional options:
+
+  -o OUTPUT-FILE    set the output file name to OUTPUT-FILE
+  -no-suppress      do not suppress compiler output for multiple passes
+  -prefer-pic       try to build PIC objects only
+  -prefer-non-pic   try to build non-PIC objects only
+  -shared           do not build a \`.o' file suitable for static linking
+  -static           only build a \`.o' file suitable for static linking
+  -Wc,FLAG          pass FLAG directly to the compiler
+
+COMPILE-COMMAND is a command to be used in creating a \`standard' object file
+from the given SOURCEFILE.
+
+The output file name is determined by removing the directory component from
+SOURCEFILE, then substituting the C source code suffix \`.c' with the
+library object suffix, \`.lo'."
+        ;;
+
+      execute)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]...
+
+Automatically set library path, then run a program.
+
+This mode accepts the following additional options:
+
+  -dlopen FILE      add the directory containing FILE to the library path
+
+This mode sets the library path environment variable according to \`-dlopen'
+flags.
+
+If any of the ARGS are libtool executable wrappers, then they are translated
+into their corresponding uninstalled binary, and any of their required library
+directories are added to the library path.
+
+Then, COMMAND is executed, with ARGS as arguments."
+        ;;
+
+      finish)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=finish [LIBDIR]...
+
+Complete the installation of libtool libraries.
+
+Each LIBDIR is a directory that contains libtool libraries.
+
+The commands that this mode executes may require superuser privileges.  Use
+the \`--dry-run' option if you just want to see what would be executed."
+        ;;
+
+      install)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND...
+
+Install executables or libraries.
+
+INSTALL-COMMAND is the installation command.  The first component should be
+either the \`install' or \`cp' program.
+
+The following components of INSTALL-COMMAND are treated specially:
+
+  -inst-prefix-dir PREFIX-DIR  Use PREFIX-DIR as a staging area for installation
+
+The rest of the components are interpreted as arguments to that command (only
+BSD-compatible install options are recognized)."
+        ;;
+
+      link)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=link LINK-COMMAND...
+
+Link object files or libraries together to form another library, or to
+create an executable program.
+
+LINK-COMMAND is a command using the C compiler that you would use to create
+a program from several object files.
+
+The following components of LINK-COMMAND are treated specially:
+
+  -all-static       do not do any dynamic linking at all
+  -avoid-version    do not add a version suffix if possible
+  -bindir BINDIR    specify path to binaries directory (for systems where
+                    libraries must be found in the PATH setting at runtime)
+  -dlopen FILE      \`-dlpreopen' FILE if it cannot be dlopened at runtime
+  -dlpreopen FILE   link in FILE and add its symbols to lt_preloaded_symbols
+  -export-dynamic   allow symbols from OUTPUT-FILE to be resolved with dlsym(3)
+  -export-symbols SYMFILE
+                    try to export only the symbols listed in SYMFILE
+  -export-symbols-regex REGEX
+                    try to export only the symbols matching REGEX
+  -LLIBDIR          search LIBDIR for required installed libraries
+  -lNAME            OUTPUT-FILE requires the installed library libNAME
+  -module           build a library that can dlopened
+  -no-fast-install  disable the fast-install mode
+  -no-install       link a not-installable executable
+  -no-undefined     declare that a library does not refer to external symbols
+  -o OUTPUT-FILE    create OUTPUT-FILE from the specified objects
+  -objectlist FILE  Use a list of object files found in FILE to specify objects
+  -precious-files-regex REGEX
+                    don't remove output files matching REGEX
+  -release RELEASE  specify package release information
+  -rpath LIBDIR     the created library will eventually be installed in LIBDIR
+  -R[ ]LIBDIR       add LIBDIR to the runtime path of programs and libraries
+  -shared           only do dynamic linking of libtool libraries
+  -shrext SUFFIX    override the standard shared library file extension
+  -static           do not do any dynamic linking of uninstalled libtool libraries
+  -static-libtool-libs
+                    do not do any dynamic linking of libtool libraries
+  -version-info CURRENT[:REVISION[:AGE]]
+                    specify library version info [each variable defaults to 0]
+  -weak LIBNAME     declare that the target provides the LIBNAME interface
+  -Wc,FLAG
+  -Xcompiler FLAG   pass linker-specific FLAG directly to the compiler
+  -Wl,FLAG
+  -Xlinker FLAG     pass linker-specific FLAG directly to the linker
+  -XCClinker FLAG   pass link-specific FLAG to the compiler driver (CC)
+
+All other options (arguments beginning with \`-') are ignored.
+
+Every other argument is treated as a filename.  Files ending in \`.la' are
+treated as uninstalled libtool libraries, other files are standard or library
+object files.
+
+If the OUTPUT-FILE ends in \`.la', then a libtool library is created,
+only library objects (\`.lo' files) may be specified, and \`-rpath' is
+required, except when creating a convenience library.
+
+If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created
+using \`ar' and \`ranlib', or on Windows using \`lib'.
+
+If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file
+is created, otherwise an executable program is created."
+        ;;
+
+      uninstall)
+        $ECHO \
+"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE...
+
+Remove libraries from an installation directory.
+
+RM is the name of the program to use to delete files associated with each FILE
+(typically \`/bin/rm').  RM-OPTIONS are options (such as \`-f') to be passed
+to RM.
+
+If FILE is a libtool library, all the files associated with it are deleted.
+Otherwise, only FILE itself is deleted using RM."
+        ;;
+
+      *)
+        func_fatal_help "invalid operation mode \`$opt_mode'"
+        ;;
+    esac
+
+    echo
+    $ECHO "Try \`$progname --help' for more information about other modes."
+}
+
+# Now that we've collected a possible --mode arg, show help if necessary
+if $opt_help; then
+  if test "$opt_help" = :; then
+    func_mode_help
+  else
+    {
+      func_help noexit
+      for opt_mode in compile link execute install finish uninstall clean; do
+	func_mode_help
+      done
+    } | sed -n '1p; 2,$s/^Usage:/  or: /p'
+    {
+      func_help noexit
+      for opt_mode in compile link execute install finish uninstall clean; do
+	echo
+	func_mode_help
+      done
+    } |
+    sed '1d
+      /^When reporting/,/^Report/{
+	H
+	d
+      }
+      $x
+      /information about other modes/d
+      /more detailed .*MODE/d
+      s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/'
+  fi
+  exit $?
+fi
+
+
+# func_mode_execute arg...
+func_mode_execute ()
+{
+    $opt_debug
+    # The first argument is the command name.
+    cmd="$nonopt"
+    test -z "$cmd" && \
+      func_fatal_help "you must specify a COMMAND"
+
+    # Handle -dlopen flags immediately.
+    for file in $opt_dlopen; do
+      test -f "$file" \
+	|| func_fatal_help "\`$file' is not a file"
+
+      dir=
+      case $file in
+      *.la)
+	func_resolve_sysroot "$file"
+	file=$func_resolve_sysroot_result
+
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$file" \
+	  || func_fatal_help "\`$lib' is not a valid libtool archive"
+
+	# Read the libtool library.
+	dlname=
+	library_names=
+	func_source "$file"
+
+	# Skip this library if it cannot be dlopened.
+	if test -z "$dlname"; then
+	  # Warn if it was a shared library.
+	  test -n "$library_names" && \
+	    func_warning "\`$file' was not linked with \`-export-dynamic'"
+	  continue
+	fi
+
+	func_dirname "$file" "" "."
+	dir="$func_dirname_result"
+
+	if test -f "$dir/$objdir/$dlname"; then
+	  func_append dir "/$objdir"
+	else
+	  if test ! -f "$dir/$dlname"; then
+	    func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
+	  fi
+	fi
+	;;
+
+      *.lo)
+	# Just add the directory containing the .lo file.
+	func_dirname "$file" "" "."
+	dir="$func_dirname_result"
+	;;
+
+      *)
+	func_warning "\`-dlopen' is ignored for non-libtool libraries and objects"
+	continue
+	;;
+      esac
+
+      # Get the absolute pathname.
+      absdir=`cd "$dir" && pwd`
+      test -n "$absdir" && dir="$absdir"
+
+      # Now add the directory to shlibpath_var.
+      if eval "test -z \"\$$shlibpath_var\""; then
+	eval "$shlibpath_var=\"\$dir\""
+      else
+	eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\""
+      fi
+    done
+
+    # This variable tells wrapper scripts just to set shlibpath_var
+    # rather than running their programs.
+    libtool_execute_magic="$magic"
+
+    # Check if any of the arguments is a wrapper script.
+    args=
+    for file
+    do
+      case $file in
+      -* | *.la | *.lo ) ;;
+      *)
+	# Do a test to see if this is really a libtool program.
+	if func_ltwrapper_script_p "$file"; then
+	  func_source "$file"
+	  # Transform arg to wrapped name.
+	  file="$progdir/$program"
+	elif func_ltwrapper_executable_p "$file"; then
+	  func_ltwrapper_scriptname "$file"
+	  func_source "$func_ltwrapper_scriptname_result"
+	  # Transform arg to wrapped name.
+	  file="$progdir/$program"
+	fi
+	;;
+      esac
+      # Quote arguments (to preserve shell metacharacters).
+      func_append_quoted args "$file"
+    done
+
+    if test "X$opt_dry_run" = Xfalse; then
+      if test -n "$shlibpath_var"; then
+	# Export the shlibpath_var.
+	eval "export $shlibpath_var"
+      fi
+
+      # Restore saved environment variables
+      for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
+      do
+	eval "if test \"\${save_$lt_var+set}\" = set; then
+                $lt_var=\$save_$lt_var; export $lt_var
+	      else
+		$lt_unset $lt_var
+	      fi"
+      done
+
+      # Now prepare to actually exec the command.
+      exec_cmd="\$cmd$args"
+    else
+      # Display what would be done.
+      if test -n "$shlibpath_var"; then
+	eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\""
+	echo "export $shlibpath_var"
+      fi
+      $ECHO "$cmd$args"
+      exit $EXIT_SUCCESS
+    fi
+}
+
+test "$opt_mode" = execute && func_mode_execute ${1+"$@"}
+
+
+# func_mode_finish arg...
+func_mode_finish ()
+{
+    $opt_debug
+    libs=
+    libdirs=
+    admincmds=
+
+    for opt in "$nonopt" ${1+"$@"}
+    do
+      if test -d "$opt"; then
+	func_append libdirs " $opt"
+
+      elif test -f "$opt"; then
+	if func_lalib_unsafe_p "$opt"; then
+	  func_append libs " $opt"
+	else
+	  func_warning "\`$opt' is not a valid libtool archive"
+	fi
+
+      else
+	func_fatal_error "invalid argument \`$opt'"
+      fi
+    done
+
+    if test -n "$libs"; then
+      if test -n "$lt_sysroot"; then
+        sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"`
+        sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;"
+      else
+        sysroot_cmd=
+      fi
+
+      # Remove sysroot references
+      if $opt_dry_run; then
+        for lib in $libs; do
+          echo "removing references to $lt_sysroot and \`=' prefixes from $lib"
+        done
+      else
+        tmpdir=`func_mktempdir`
+        for lib in $libs; do
+	  sed -e "${sysroot_cmd} s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \
+	    > $tmpdir/tmp-la
+	  mv -f $tmpdir/tmp-la $lib
+	done
+        ${RM}r "$tmpdir"
+      fi
+    fi
+
+    if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+      for libdir in $libdirs; do
+	if test -n "$finish_cmds"; then
+	  # Do each command in the finish commands.
+	  func_execute_cmds "$finish_cmds" 'admincmds="$admincmds
+'"$cmd"'"'
+	fi
+	if test -n "$finish_eval"; then
+	  # Do the single finish_eval.
+	  eval cmds=\"$finish_eval\"
+	  $opt_dry_run || eval "$cmds" || func_append admincmds "
+       $cmds"
+	fi
+      done
+    fi
+
+    # Exit here if they wanted silent mode.
+    $opt_silent && exit $EXIT_SUCCESS
+
+    if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
+      echo "----------------------------------------------------------------------"
+      echo "Libraries have been installed in:"
+      for libdir in $libdirs; do
+	$ECHO "   $libdir"
+      done
+      echo
+      echo "If you ever happen to want to link against installed libraries"
+      echo "in a given directory, LIBDIR, you must either use libtool, and"
+      echo "specify the full pathname of the library, or use the \`-LLIBDIR'"
+      echo "flag during linking and do at least one of the following:"
+      if test -n "$shlibpath_var"; then
+	echo "   - add LIBDIR to the \`$shlibpath_var' environment variable"
+	echo "     during execution"
+      fi
+      if test -n "$runpath_var"; then
+	echo "   - add LIBDIR to the \`$runpath_var' environment variable"
+	echo "     during linking"
+      fi
+      if test -n "$hardcode_libdir_flag_spec"; then
+	libdir=LIBDIR
+	eval flag=\"$hardcode_libdir_flag_spec\"
+
+	$ECHO "   - use the \`$flag' linker flag"
+      fi
+      if test -n "$admincmds"; then
+	$ECHO "   - have your system administrator run these commands:$admincmds"
+      fi
+      if test -f /etc/ld.so.conf; then
+	echo "   - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
+      fi
+      echo
+
+      echo "See any operating system documentation about shared libraries for"
+      case $host in
+	solaris2.[6789]|solaris2.1[0-9])
+	  echo "more information, such as the ld(1), crle(1) and ld.so(8) manual"
+	  echo "pages."
+	  ;;
+	*)
+	  echo "more information, such as the ld(1) and ld.so(8) manual pages."
+	  ;;
+      esac
+      echo "----------------------------------------------------------------------"
+    fi
+    exit $EXIT_SUCCESS
+}
+
+test "$opt_mode" = finish && func_mode_finish ${1+"$@"}
+
+
+# func_mode_install arg...
+func_mode_install ()
+{
+    $opt_debug
+    # There may be an optional sh(1) argument at the beginning of
+    # install_prog (especially on Windows NT).
+    if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh ||
+       # Allow the use of GNU shtool's install command.
+       case $nonopt in *shtool*) :;; *) false;; esac; then
+      # Aesthetically quote it.
+      func_quote_for_eval "$nonopt"
+      install_prog="$func_quote_for_eval_result "
+      arg=$1
+      shift
+    else
+      install_prog=
+      arg=$nonopt
+    fi
+
+    # The real first argument should be the name of the installation program.
+    # Aesthetically quote it.
+    func_quote_for_eval "$arg"
+    func_append install_prog "$func_quote_for_eval_result"
+    install_shared_prog=$install_prog
+    case " $install_prog " in
+      *[\\\ /]cp\ *) install_cp=: ;;
+      *) install_cp=false ;;
+    esac
+
+    # We need to accept at least all the BSD install flags.
+    dest=
+    files=
+    opts=
+    prev=
+    install_type=
+    isdir=no
+    stripme=
+    no_mode=:
+    for arg
+    do
+      arg2=
+      if test -n "$dest"; then
+	func_append files " $dest"
+	dest=$arg
+	continue
+      fi
+
+      case $arg in
+      -d) isdir=yes ;;
+      -f)
+	if $install_cp; then :; else
+	  prev=$arg
+	fi
+	;;
+      -g | -m | -o)
+	prev=$arg
+	;;
+      -s)
+	stripme=" -s"
+	continue
+	;;
+      -*)
+	;;
+      *)
+	# If the previous option needed an argument, then skip it.
+	if test -n "$prev"; then
+	  if test "x$prev" = x-m && test -n "$install_override_mode"; then
+	    arg2=$install_override_mode
+	    no_mode=false
+	  fi
+	  prev=
+	else
+	  dest=$arg
+	  continue
+	fi
+	;;
+      esac
+
+      # Aesthetically quote the argument.
+      func_quote_for_eval "$arg"
+      func_append install_prog " $func_quote_for_eval_result"
+      if test -n "$arg2"; then
+	func_quote_for_eval "$arg2"
+      fi
+      func_append install_shared_prog " $func_quote_for_eval_result"
+    done
+
+    test -z "$install_prog" && \
+      func_fatal_help "you must specify an install program"
+
+    test -n "$prev" && \
+      func_fatal_help "the \`$prev' option requires an argument"
+
+    if test -n "$install_override_mode" && $no_mode; then
+      if $install_cp; then :; else
+	func_quote_for_eval "$install_override_mode"
+	func_append install_shared_prog " -m $func_quote_for_eval_result"
+      fi
+    fi
+
+    if test -z "$files"; then
+      if test -z "$dest"; then
+	func_fatal_help "no file or destination specified"
+      else
+	func_fatal_help "you must specify a destination"
+      fi
+    fi
+
+    # Strip any trailing slash from the destination.
+    func_stripname '' '/' "$dest"
+    dest=$func_stripname_result
+
+    # Check to see that the destination is a directory.
+    test -d "$dest" && isdir=yes
+    if test "$isdir" = yes; then
+      destdir="$dest"
+      destname=
+    else
+      func_dirname_and_basename "$dest" "" "."
+      destdir="$func_dirname_result"
+      destname="$func_basename_result"
+
+      # Not a directory, so check to see that there is only one file specified.
+      set dummy $files; shift
+      test "$#" -gt 1 && \
+	func_fatal_help "\`$dest' is not a directory"
+    fi
+    case $destdir in
+    [\\/]* | [A-Za-z]:[\\/]*) ;;
+    *)
+      for file in $files; do
+	case $file in
+	*.lo) ;;
+	*)
+	  func_fatal_help "\`$destdir' must be an absolute directory name"
+	  ;;
+	esac
+      done
+      ;;
+    esac
+
+    # This variable tells wrapper scripts just to set variables rather
+    # than running their programs.
+    libtool_install_magic="$magic"
+
+    staticlibs=
+    future_libdirs=
+    current_libdirs=
+    for file in $files; do
+
+      # Do each installation.
+      case $file in
+      *.$libext)
+	# Do the static libraries later.
+	func_append staticlibs " $file"
+	;;
+
+      *.la)
+	func_resolve_sysroot "$file"
+	file=$func_resolve_sysroot_result
+
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$file" \
+	  || func_fatal_help "\`$file' is not a valid libtool archive"
+
+	library_names=
+	old_library=
+	relink_command=
+	func_source "$file"
+
+	# Add the libdir to current_libdirs if it is the destination.
+	if test "X$destdir" = "X$libdir"; then
+	  case "$current_libdirs " in
+	  *" $libdir "*) ;;
+	  *) func_append current_libdirs " $libdir" ;;
+	  esac
+	else
+	  # Note the libdir as a future libdir.
+	  case "$future_libdirs " in
+	  *" $libdir "*) ;;
+	  *) func_append future_libdirs " $libdir" ;;
+	  esac
+	fi
+
+	func_dirname "$file" "/" ""
+	dir="$func_dirname_result"
+	func_append dir "$objdir"
+
+	if test -n "$relink_command"; then
+	  # Determine the prefix the user has applied to our future dir.
+	  inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"`
+
+	  # Don't allow the user to place us outside of our expected
+	  # location b/c this prevents finding dependent libraries that
+	  # are installed to the same prefix.
+	  # At present, this check doesn't affect windows .dll's that
+	  # are installed into $libdir/../bin (currently, that works fine)
+	  # but it's something to keep an eye on.
+	  test "$inst_prefix_dir" = "$destdir" && \
+	    func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir"
+
+	  if test -n "$inst_prefix_dir"; then
+	    # Stick the inst_prefix_dir data into the link command.
+	    relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
+	  else
+	    relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"`
+	  fi
+
+	  func_warning "relinking \`$file'"
+	  func_show_eval "$relink_command" \
+	    'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"'
+	fi
+
+	# See the names of the shared library.
+	set dummy $library_names; shift
+	if test -n "$1"; then
+	  realname="$1"
+	  shift
+
+	  srcname="$realname"
+	  test -n "$relink_command" && srcname="$realname"T
+
+	  # Install the shared library and build the symlinks.
+	  func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \
+	      'exit $?'
+	  tstripme="$stripme"
+	  case $host_os in
+	  cygwin* | mingw* | pw32* | cegcc*)
+	    case $realname in
+	    *.dll.a)
+	      tstripme=""
+	      ;;
+	    esac
+	    ;;
+	  esac
+	  if test -n "$tstripme" && test -n "$striplib"; then
+	    func_show_eval "$striplib $destdir/$realname" 'exit $?'
+	  fi
+
+	  if test "$#" -gt 0; then
+	    # Delete the old symlinks, and create new ones.
+	    # Try `ln -sf' first, because the `ln' binary might depend on
+	    # the symlink we replace!  Solaris /bin/ln does not understand -f,
+	    # so we also need to try rm && ln -s.
+	    for linkname
+	    do
+	      test "$linkname" != "$realname" \
+		&& func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })"
+	    done
+	  fi
+
+	  # Do each command in the postinstall commands.
+	  lib="$destdir/$realname"
+	  func_execute_cmds "$postinstall_cmds" 'exit $?'
+	fi
+
+	# Install the pseudo-library for information purposes.
+	func_basename "$file"
+	name="$func_basename_result"
+	instname="$dir/$name"i
+	func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
+
+	# Maybe install the static library, too.
+	test -n "$old_library" && func_append staticlibs " $dir/$old_library"
+	;;
+
+      *.lo)
+	# Install (i.e. copy) a libtool object.
+
+	# Figure out destination file name, if it wasn't already specified.
+	if test -n "$destname"; then
+	  destfile="$destdir/$destname"
+	else
+	  func_basename "$file"
+	  destfile="$func_basename_result"
+	  destfile="$destdir/$destfile"
+	fi
+
+	# Deduce the name of the destination old-style object file.
+	case $destfile in
+	*.lo)
+	  func_lo2o "$destfile"
+	  staticdest=$func_lo2o_result
+	  ;;
+	*.$objext)
+	  staticdest="$destfile"
+	  destfile=
+	  ;;
+	*)
+	  func_fatal_help "cannot copy a libtool object to \`$destfile'"
+	  ;;
+	esac
+
+	# Install the libtool object if requested.
+	test -n "$destfile" && \
+	  func_show_eval "$install_prog $file $destfile" 'exit $?'
+
+	# Install the old object if enabled.
+	if test "$build_old_libs" = yes; then
+	  # Deduce the name of the old-style object file.
+	  func_lo2o "$file"
+	  staticobj=$func_lo2o_result
+	  func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?'
+	fi
+	exit $EXIT_SUCCESS
+	;;
+
+      *)
+	# Figure out destination file name, if it wasn't already specified.
+	if test -n "$destname"; then
+	  destfile="$destdir/$destname"
+	else
+	  func_basename "$file"
+	  destfile="$func_basename_result"
+	  destfile="$destdir/$destfile"
+	fi
+
+	# If the file is missing, and there is a .exe on the end, strip it
+	# because it is most likely a libtool script we actually want to
+	# install
+	stripped_ext=""
+	case $file in
+	  *.exe)
+	    if test ! -f "$file"; then
+	      func_stripname '' '.exe' "$file"
+	      file=$func_stripname_result
+	      stripped_ext=".exe"
+	    fi
+	    ;;
+	esac
+
+	# Do a test to see if this is really a libtool program.
+	case $host in
+	*cygwin* | *mingw*)
+	    if func_ltwrapper_executable_p "$file"; then
+	      func_ltwrapper_scriptname "$file"
+	      wrapper=$func_ltwrapper_scriptname_result
+	    else
+	      func_stripname '' '.exe' "$file"
+	      wrapper=$func_stripname_result
+	    fi
+	    ;;
+	*)
+	    wrapper=$file
+	    ;;
+	esac
+	if func_ltwrapper_script_p "$wrapper"; then
+	  notinst_deplibs=
+	  relink_command=
+
+	  func_source "$wrapper"
+
+	  # Check the variables that should have been set.
+	  test -z "$generated_by_libtool_version" && \
+	    func_fatal_error "invalid libtool wrapper script \`$wrapper'"
+
+	  finalize=yes
+	  for lib in $notinst_deplibs; do
+	    # Check to see that each library is installed.
+	    libdir=
+	    if test -f "$lib"; then
+	      func_source "$lib"
+	    fi
+	    libfile="$libdir/"`$ECHO "$lib" | $SED 's%^.*/%%g'` ### testsuite: skip nested quoting test
+	    if test -n "$libdir" && test ! -f "$libfile"; then
+	      func_warning "\`$lib' has not been installed in \`$libdir'"
+	      finalize=no
+	    fi
+	  done
+
+	  relink_command=
+	  func_source "$wrapper"
+
+	  outputname=
+	  if test "$fast_install" = no && test -n "$relink_command"; then
+	    $opt_dry_run || {
+	      if test "$finalize" = yes; then
+	        tmpdir=`func_mktempdir`
+		func_basename "$file$stripped_ext"
+		file="$func_basename_result"
+	        outputname="$tmpdir/$file"
+	        # Replace the output file specification.
+	        relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'`
+
+	        $opt_silent || {
+	          func_quote_for_expand "$relink_command"
+		  eval "func_echo $func_quote_for_expand_result"
+	        }
+	        if eval "$relink_command"; then :
+	          else
+		  func_error "error: relink \`$file' with the above command before installing it"
+		  $opt_dry_run || ${RM}r "$tmpdir"
+		  continue
+	        fi
+	        file="$outputname"
+	      else
+	        func_warning "cannot relink \`$file'"
+	      fi
+	    }
+	  else
+	    # Install the binary that we compiled earlier.
+	    file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"`
+	  fi
+	fi
+
+	# remove .exe since cygwin /usr/bin/install will append another
+	# one anyway
+	case $install_prog,$host in
+	*/usr/bin/install*,*cygwin*)
+	  case $file:$destfile in
+	  *.exe:*.exe)
+	    # this is ok
+	    ;;
+	  *.exe:*)
+	    destfile=$destfile.exe
+	    ;;
+	  *:*.exe)
+	    func_stripname '' '.exe' "$destfile"
+	    destfile=$func_stripname_result
+	    ;;
+	  esac
+	  ;;
+	esac
+	func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?'
+	$opt_dry_run || if test -n "$outputname"; then
+	  ${RM}r "$tmpdir"
+	fi
+	;;
+      esac
+    done
+
+    for file in $staticlibs; do
+      func_basename "$file"
+      name="$func_basename_result"
+
+      # Set up the ranlib parameters.
+      oldlib="$destdir/$name"
+      func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+      tool_oldlib=$func_to_tool_file_result
+
+      func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
+
+      if test -n "$stripme" && test -n "$old_striplib"; then
+	func_show_eval "$old_striplib $tool_oldlib" 'exit $?'
+      fi
+
+      # Do each command in the postinstall commands.
+      func_execute_cmds "$old_postinstall_cmds" 'exit $?'
+    done
+
+    test -n "$future_libdirs" && \
+      func_warning "remember to run \`$progname --finish$future_libdirs'"
+
+    if test -n "$current_libdirs"; then
+      # Maybe just do a dry run.
+      $opt_dry_run && current_libdirs=" -n$current_libdirs"
+      exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs'
+    else
+      exit $EXIT_SUCCESS
+    fi
+}
+
+test "$opt_mode" = install && func_mode_install ${1+"$@"}
+
+
+# func_generate_dlsyms outputname originator pic_p
+# Extract symbols from dlprefiles and create ${outputname}S.o with
+# a dlpreopen symbol table.
+func_generate_dlsyms ()
+{
+    $opt_debug
+    my_outputname="$1"
+    my_originator="$2"
+    my_pic_p="${3-no}"
+    my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'`
+    my_dlsyms=
+
+    if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+      if test -n "$NM" && test -n "$global_symbol_pipe"; then
+	my_dlsyms="${my_outputname}S.c"
+      else
+	func_error "not configured to extract global symbols from dlpreopened files"
+      fi
+    fi
+
+    if test -n "$my_dlsyms"; then
+      case $my_dlsyms in
+      "") ;;
+      *.c)
+	# Discover the nlist of each of the dlfiles.
+	nlist="$output_objdir/${my_outputname}.nm"
+
+	func_show_eval "$RM $nlist ${nlist}S ${nlist}T"
+
+	# Parse the name list into a source file.
+	func_verbose "creating $output_objdir/$my_dlsyms"
+
+	$opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\
+/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */
+/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif
+
+#if defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4))
+#pragma GCC diagnostic ignored \"-Wstrict-prototypes\"
+#endif
+
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests.  */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+   relocations are performed -- see ld's documentation on pseudo-relocs.  */
+# define LT_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data.  */
+# define LT_DLSYM_CONST
+#else
+# define LT_DLSYM_CONST const
+#endif
+
+/* External symbol declarations for the compiler. */\
+"
+
+	if test "$dlself" = yes; then
+	  func_verbose "generating symbol list for \`$output'"
+
+	  $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist"
+
+	  # Add our own program objects to the symbol list.
+	  progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	  for progfile in $progfiles; do
+	    func_to_tool_file "$progfile" func_convert_file_msys_to_w32
+	    func_verbose "extracting global C symbols from \`$func_to_tool_file_result'"
+	    $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'"
+	  done
+
+	  if test -n "$exclude_expsyms"; then
+	    $opt_dry_run || {
+	      eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T'
+	      eval '$MV "$nlist"T "$nlist"'
+	    }
+	  fi
+
+	  if test -n "$export_symbols_regex"; then
+	    $opt_dry_run || {
+	      eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T'
+	      eval '$MV "$nlist"T "$nlist"'
+	    }
+	  fi
+
+	  # Prepare the list of exported symbols
+	  if test -z "$export_symbols"; then
+	    export_symbols="$output_objdir/$outputname.exp"
+	    $opt_dry_run || {
+	      $RM $export_symbols
+	      eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"'
+	      case $host in
+	      *cygwin* | *mingw* | *cegcc* )
+                eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+                eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"'
+	        ;;
+	      esac
+	    }
+	  else
+	    $opt_dry_run || {
+	      eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"'
+	      eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T'
+	      eval '$MV "$nlist"T "$nlist"'
+	      case $host in
+	        *cygwin* | *mingw* | *cegcc* )
+	          eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
+	          eval 'cat "$nlist" >> "$output_objdir/$outputname.def"'
+	          ;;
+	      esac
+	    }
+	  fi
+	fi
+
+	for dlprefile in $dlprefiles; do
+	  func_verbose "extracting global C symbols from \`$dlprefile'"
+	  func_basename "$dlprefile"
+	  name="$func_basename_result"
+          case $host in
+	    *cygwin* | *mingw* | *cegcc* )
+	      # if an import library, we need to obtain dlname
+	      if func_win32_import_lib_p "$dlprefile"; then
+	        func_tr_sh "$dlprefile"
+	        eval "curr_lafile=\$libfile_$func_tr_sh_result"
+	        dlprefile_dlbasename=""
+	        if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then
+	          # Use subshell, to avoid clobbering current variable values
+	          dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"`
+	          if test -n "$dlprefile_dlname" ; then
+	            func_basename "$dlprefile_dlname"
+	            dlprefile_dlbasename="$func_basename_result"
+	          else
+	            # no lafile. user explicitly requested -dlpreopen .
+	            $sharedlib_from_linklib_cmd "$dlprefile"
+	            dlprefile_dlbasename=$sharedlib_from_linklib_result
+	          fi
+	        fi
+	        $opt_dry_run || {
+	          if test -n "$dlprefile_dlbasename" ; then
+	            eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"'
+	          else
+	            func_warning "Could not compute DLL name from $name"
+	            eval '$ECHO ": $name " >> "$nlist"'
+	          fi
+	          func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+	          eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe |
+	            $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'"
+	        }
+	      else # not an import lib
+	        $opt_dry_run || {
+	          eval '$ECHO ": $name " >> "$nlist"'
+	          func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+	          eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+	        }
+	      fi
+	    ;;
+	    *)
+	      $opt_dry_run || {
+	        eval '$ECHO ": $name " >> "$nlist"'
+	        func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
+	        eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
+	      }
+	    ;;
+          esac
+	done
+
+	$opt_dry_run || {
+	  # Make sure we have at least an empty file.
+	  test -f "$nlist" || : > "$nlist"
+
+	  if test -n "$exclude_expsyms"; then
+	    $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
+	    $MV "$nlist"T "$nlist"
+	  fi
+
+	  # Try sorting and uniquifying the output.
+	  if $GREP -v "^: " < "$nlist" |
+	      if sort -k 3 /dev/null 2>&1; then
+		sort -k 3
+	      else
+		sort +2
+	      fi |
+	      uniq > "$nlist"S; then
+	    :
+	  else
+	    $GREP -v "^: " < "$nlist" > "$nlist"S
+	  fi
+
+	  if test -f "$nlist"S; then
+	    eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"'
+	  else
+	    echo '/* NONE */' >> "$output_objdir/$my_dlsyms"
+	  fi
+
+	  echo >> "$output_objdir/$my_dlsyms" "\
+
+/* The mapping between symbol names and symbols.  */
+typedef struct {
+  const char *name;
+  void *address;
+} lt_dlsymlist;
+extern LT_DLSYM_CONST lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[];
+LT_DLSYM_CONST lt_dlsymlist
+lt_${my_prefix}_LTX_preloaded_symbols[] =
+{\
+  { \"$my_originator\", (void *) 0 },"
+
+	  case $need_lib_prefix in
+	  no)
+	    eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms"
+	    ;;
+	  *)
+	    eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms"
+	    ;;
+	  esac
+	  echo >> "$output_objdir/$my_dlsyms" "\
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt_${my_prefix}_LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif\
+"
+	} # !$opt_dry_run
+
+	pic_flag_for_symtable=
+	case "$compile_command " in
+	*" -static "*) ;;
+	*)
+	  case $host in
+	  # compiling the symbol table file with pic_flag works around
+	  # a FreeBSD bug that causes programs to crash when -lm is
+	  # linked before any other PIC object.  But we must not use
+	  # pic_flag when linking with -static.  The problem exists in
+	  # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
+	  *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+	    pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
+	  *-*-hpux*)
+	    pic_flag_for_symtable=" $pic_flag"  ;;
+	  *)
+	    if test "X$my_pic_p" != Xno; then
+	      pic_flag_for_symtable=" $pic_flag"
+	    fi
+	    ;;
+	  esac
+	  ;;
+	esac
+	symtab_cflags=
+	for arg in $LTCFLAGS; do
+	  case $arg in
+	  -pie | -fpie | -fPIE) ;;
+	  *) func_append symtab_cflags " $arg" ;;
+	  esac
+	done
+
+	# Now compile the dynamic symbol file.
+	func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?'
+
+	# Clean up the generated files.
+	func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"'
+
+	# Transform the symbol file into the correct name.
+	symfileobj="$output_objdir/${my_outputname}S.$objext"
+	case $host in
+	*cygwin* | *mingw* | *cegcc* )
+	  if test -f "$output_objdir/$my_outputname.def"; then
+	    compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+	    finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
+	  else
+	    compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	    finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  fi
+	  ;;
+	*)
+	  compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
+	  ;;
+	esac
+	;;
+      *)
+	func_fatal_error "unknown suffix for \`$my_dlsyms'"
+	;;
+      esac
+    else
+      # We keep going just in case the user didn't refer to
+      # lt_preloaded_symbols.  The linker will fail if global_symbol_pipe
+      # really was required.
+
+      # Nullify the symbol file.
+      compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"`
+      finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"`
+    fi
+}
+
+# func_win32_libid arg
+# return the library type of file 'arg'
+#
+# Need a lot of goo to handle *both* DLLs and import libs
+# Has to be a shell function in order to 'eat' the argument
+# that is supplied when $file_magic_command is called.
+# Despite the name, also deal with 64 bit binaries.
+func_win32_libid ()
+{
+  $opt_debug
+  win32_libid_type="unknown"
+  win32_fileres=`file -L $1 2>/dev/null`
+  case $win32_fileres in
+  *ar\ archive\ import\ library*) # definitely import
+    win32_libid_type="x86 archive import"
+    ;;
+  *ar\ archive*) # could be an import, or static
+    # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD.
+    if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
+       $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then
+      func_to_tool_file "$1" func_convert_file_msys_to_w32
+      win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" |
+	$SED -n -e '
+	    1,100{
+		/ I /{
+		    s,.*,import,
+		    p
+		    q
+		}
+	    }'`
+      case $win32_nmres in
+      import*)  win32_libid_type="x86 archive import";;
+      *)        win32_libid_type="x86 archive static";;
+      esac
+    fi
+    ;;
+  *DLL*)
+    win32_libid_type="x86 DLL"
+    ;;
+  *executable*) # but shell scripts are "executable" too...
+    case $win32_fileres in
+    *MS\ Windows\ PE\ Intel*)
+      win32_libid_type="x86 DLL"
+      ;;
+    esac
+    ;;
+  esac
+  $ECHO "$win32_libid_type"
+}
+
+# func_cygming_dll_for_implib ARG
+#
+# Platform-specific function to extract the
+# name of the DLL associated with the specified
+# import library ARG.
+# Invoked by eval'ing the libtool variable
+#    $sharedlib_from_linklib_cmd
+# Result is available in the variable
+#    $sharedlib_from_linklib_result
+func_cygming_dll_for_implib ()
+{
+  $opt_debug
+  sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"`
+}
+
+# func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs
+#
+# The is the core of a fallback implementation of a
+# platform-specific function to extract the name of the
+# DLL associated with the specified import library LIBNAME.
+#
+# SECTION_NAME is either .idata$6 or .idata$7, depending
+# on the platform and compiler that created the implib.
+#
+# Echos the name of the DLL associated with the
+# specified import library.
+func_cygming_dll_for_implib_fallback_core ()
+{
+  $opt_debug
+  match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"`
+  $OBJDUMP -s --section "$1" "$2" 2>/dev/null |
+    $SED '/^Contents of section '"$match_literal"':/{
+      # Place marker at beginning of archive member dllname section
+      s/.*/====MARK====/
+      p
+      d
+    }
+    # These lines can sometimes be longer than 43 characters, but
+    # are always uninteresting
+    /:[	 ]*file format pe[i]\{,1\}-/d
+    /^In archive [^:]*:/d
+    # Ensure marker is printed
+    /^====MARK====/p
+    # Remove all lines with less than 43 characters
+    /^.\{43\}/!d
+    # From remaining lines, remove first 43 characters
+    s/^.\{43\}//' |
+    $SED -n '
+      # Join marker and all lines until next marker into a single line
+      /^====MARK====/ b para
+      H
+      $ b para
+      b
+      :para
+      x
+      s/\n//g
+      # Remove the marker
+      s/^====MARK====//
+      # Remove trailing dots and whitespace
+      s/[\. \t]*$//
+      # Print
+      /./p' |
+    # we now have a list, one entry per line, of the stringified
+    # contents of the appropriate section of all members of the
+    # archive which possess that section. Heuristic: eliminate
+    # all those which have a first or second character that is
+    # a '.' (that is, objdump's representation of an unprintable
+    # character.) This should work for all archives with less than
+    # 0x302f exports -- but will fail for DLLs whose name actually
+    # begins with a literal '.' or a single character followed by
+    # a '.'.
+    #
+    # Of those that remain, print the first one.
+    $SED -e '/^\./d;/^.\./d;q'
+}
+
+# func_cygming_gnu_implib_p ARG
+# This predicate returns with zero status (TRUE) if
+# ARG is a GNU/binutils-style import library. Returns
+# with nonzero status (FALSE) otherwise.
+func_cygming_gnu_implib_p ()
+{
+  $opt_debug
+  func_to_tool_file "$1" func_convert_file_msys_to_w32
+  func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'`
+  test -n "$func_cygming_gnu_implib_tmp"
+}
+
+# func_cygming_ms_implib_p ARG
+# This predicate returns with zero status (TRUE) if
+# ARG is an MS-style import library. Returns
+# with nonzero status (FALSE) otherwise.
+func_cygming_ms_implib_p ()
+{
+  $opt_debug
+  func_to_tool_file "$1" func_convert_file_msys_to_w32
+  func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'`
+  test -n "$func_cygming_ms_implib_tmp"
+}
+
+# func_cygming_dll_for_implib_fallback ARG
+# Platform-specific function to extract the
+# name of the DLL associated with the specified
+# import library ARG.
+#
+# This fallback implementation is for use when $DLLTOOL
+# does not support the --identify-strict option.
+# Invoked by eval'ing the libtool variable
+#    $sharedlib_from_linklib_cmd
+# Result is available in the variable
+#    $sharedlib_from_linklib_result
+func_cygming_dll_for_implib_fallback ()
+{
+  $opt_debug
+  if func_cygming_gnu_implib_p "$1" ; then
+    # binutils import library
+    sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"`
+  elif func_cygming_ms_implib_p "$1" ; then
+    # ms-generated import library
+    sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"`
+  else
+    # unknown
+    sharedlib_from_linklib_result=""
+  fi
+}
+
+
+# func_extract_an_archive dir oldlib
+func_extract_an_archive ()
+{
+    $opt_debug
+    f_ex_an_ar_dir="$1"; shift
+    f_ex_an_ar_oldlib="$1"
+    if test "$lock_old_archive_extraction" = yes; then
+      lockfile=$f_ex_an_ar_oldlib.lock
+      until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
+	func_echo "Waiting for $lockfile to be removed"
+	sleep 2
+      done
+    fi
+    func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \
+		   'stat=$?; rm -f "$lockfile"; exit $stat'
+    if test "$lock_old_archive_extraction" = yes; then
+      $opt_dry_run || rm -f "$lockfile"
+    fi
+    if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then
+     :
+    else
+      func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib"
+    fi
+}
+
+
+# func_extract_archives gentop oldlib ...
+func_extract_archives ()
+{
+    $opt_debug
+    my_gentop="$1"; shift
+    my_oldlibs=${1+"$@"}
+    my_oldobjs=""
+    my_xlib=""
+    my_xabs=""
+    my_xdir=""
+
+    for my_xlib in $my_oldlibs; do
+      # Extract the objects.
+      case $my_xlib in
+	[\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;;
+	*) my_xabs=`pwd`"/$my_xlib" ;;
+      esac
+      func_basename "$my_xlib"
+      my_xlib="$func_basename_result"
+      my_xlib_u=$my_xlib
+      while :; do
+        case " $extracted_archives " in
+	*" $my_xlib_u "*)
+	  func_arith $extracted_serial + 1
+	  extracted_serial=$func_arith_result
+	  my_xlib_u=lt$extracted_serial-$my_xlib ;;
+	*) break ;;
+	esac
+      done
+      extracted_archives="$extracted_archives $my_xlib_u"
+      my_xdir="$my_gentop/$my_xlib_u"
+
+      func_mkdir_p "$my_xdir"
+
+      case $host in
+      *-darwin*)
+	func_verbose "Extracting $my_xabs"
+	# Do not bother doing anything if just a dry run
+	$opt_dry_run || {
+	  darwin_orig_dir=`pwd`
+	  cd $my_xdir || exit $?
+	  darwin_archive=$my_xabs
+	  darwin_curdir=`pwd`
+	  darwin_base_archive=`basename "$darwin_archive"`
+	  darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true`
+	  if test -n "$darwin_arches"; then
+	    darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'`
+	    darwin_arch=
+	    func_verbose "$darwin_base_archive has multiple architectures $darwin_arches"
+	    for darwin_arch in  $darwin_arches ; do
+	      func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+	      $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}"
+	      cd "unfat-$$/${darwin_base_archive}-${darwin_arch}"
+	      func_extract_an_archive "`pwd`" "${darwin_base_archive}"
+	      cd "$darwin_curdir"
+	      $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}"
+	    done # $darwin_arches
+            ## Okay now we've a bunch of thin objects, gotta fatten them up :)
+	    darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u`
+	    darwin_file=
+	    darwin_files=
+	    for darwin_file in $darwin_filelist; do
+	      darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP`
+	      $LIPO -create -output "$darwin_file" $darwin_files
+	    done # $darwin_filelist
+	    $RM -rf unfat-$$
+	    cd "$darwin_orig_dir"
+	  else
+	    cd $darwin_orig_dir
+	    func_extract_an_archive "$my_xdir" "$my_xabs"
+	  fi # $darwin_arches
+	} # !$opt_dry_run
+	;;
+      *)
+        func_extract_an_archive "$my_xdir" "$my_xabs"
+	;;
+      esac
+      my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP`
+    done
+
+    func_extract_archives_result="$my_oldobjs"
+}
+
+
+# func_emit_wrapper [arg=no]
+#
+# Emit a libtool wrapper script on stdout.
+# Don't directly open a file because we may want to
+# incorporate the script contents within a cygwin/mingw
+# wrapper executable.  Must ONLY be called from within
+# func_mode_link because it depends on a number of variables
+# set therein.
+#
+# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR
+# variable will take.  If 'yes', then the emitted script
+# will assume that the directory in which it is stored is
+# the $objdir directory.  This is a cygwin/mingw-specific
+# behavior.
+func_emit_wrapper ()
+{
+	func_emit_wrapper_arg1=${1-no}
+
+	$ECHO "\
+#! $SHELL
+
+# $output - temporary wrapper script for $objdir/$outputname
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# The $output program cannot be directly executed until all the libtool
+# libraries that it depends on are installed.
+#
+# This wrapper script should never be moved out of the build directory.
+# If it is, it will not operate correctly.
+
+# Sed substitution that helps us do robust quoting.  It backslashifies
+# metacharacters that are still active within double-quoted strings.
+sed_quote_subst='$sed_quote_subst'
+
+# Be Bourne compatible
+if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
+fi
+BIN_SH=xpg4; export BIN_SH # for Tru64
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+relink_command=\"$relink_command\"
+
+# This environment variable determines our operation mode.
+if test \"\$libtool_install_magic\" = \"$magic\"; then
+  # install mode needs the following variables:
+  generated_by_libtool_version='$macro_version'
+  notinst_deplibs='$notinst_deplibs'
+else
+  # When we are sourced in execute mode, \$file and \$ECHO are already set.
+  if test \"\$libtool_execute_magic\" != \"$magic\"; then
+    file=\"\$0\""
+
+    qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"`
+    $ECHO "\
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$1
+_LTECHO_EOF'
+}
+    ECHO=\"$qECHO\"
+  fi
+
+# Very basic option parsing. These options are (a) specific to
+# the libtool wrapper, (b) are identical between the wrapper
+# /script/ and the wrapper /executable/ which is used only on
+# windows platforms, and (c) all begin with the string "--lt-"
+# (application programs are unlikely to have options which match
+# this pattern).
+#
+# There are only two supported options: --lt-debug and
+# --lt-dump-script. There is, deliberately, no --lt-help.
+#
+# The first argument to this parsing function should be the
+# script's $0 value, followed by "$@".
+lt_option_debug=
+func_parse_lt_options ()
+{
+  lt_script_arg0=\$0
+  shift
+  for lt_opt
+  do
+    case \"\$lt_opt\" in
+    --lt-debug) lt_option_debug=1 ;;
+    --lt-dump-script)
+        lt_dump_D=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%/[^/]*$%%'\`
+        test \"X\$lt_dump_D\" = \"X\$lt_script_arg0\" && lt_dump_D=.
+        lt_dump_F=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%^.*/%%'\`
+        cat \"\$lt_dump_D/\$lt_dump_F\"
+        exit 0
+      ;;
+    --lt-*)
+        \$ECHO \"Unrecognized --lt- option: '\$lt_opt'\" 1>&2
+        exit 1
+      ;;
+    esac
+  done
+
+  # Print the debug banner immediately:
+  if test -n \"\$lt_option_debug\"; then
+    echo \"${outputname}:${output}:\${LINENO}: libtool wrapper (GNU $PACKAGE$TIMESTAMP) $VERSION\" 1>&2
+  fi
+}
+
+# Used when --lt-debug. Prints its arguments to stdout
+# (redirection is the responsibility of the caller)
+func_lt_dump_args ()
+{
+  lt_dump_args_N=1;
+  for lt_arg
+  do
+    \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[\$lt_dump_args_N]: \$lt_arg\"
+    lt_dump_args_N=\`expr \$lt_dump_args_N + 1\`
+  done
+}
+
+# Core function for launching the target application
+func_exec_program_core ()
+{
+"
+  case $host in
+  # Backslashes separate directories on plain windows
+  *-*-mingw | *-*-os2* | *-cegcc*)
+    $ECHO "\
+      if test -n \"\$lt_option_debug\"; then
+        \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir\\\\\$program\" 1>&2
+        func_lt_dump_args \${1+\"\$@\"} 1>&2
+      fi
+      exec \"\$progdir\\\\\$program\" \${1+\"\$@\"}
+"
+    ;;
+
+  *)
+    $ECHO "\
+      if test -n \"\$lt_option_debug\"; then
+        \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir/\$program\" 1>&2
+        func_lt_dump_args \${1+\"\$@\"} 1>&2
+      fi
+      exec \"\$progdir/\$program\" \${1+\"\$@\"}
+"
+    ;;
+  esac
+  $ECHO "\
+      \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2
+      exit 1
+}
+
+# A function to encapsulate launching the target application
+# Strips options in the --lt-* namespace from \$@ and
+# launches target application with the remaining arguments.
+func_exec_program ()
+{
+  case \" \$* \" in
+  *\\ --lt-*)
+    for lt_wr_arg
+    do
+      case \$lt_wr_arg in
+      --lt-*) ;;
+      *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
+      esac
+      shift
+    done ;;
+  esac
+  func_exec_program_core \${1+\"\$@\"}
+}
+
+  # Parse options
+  func_parse_lt_options \"\$0\" \${1+\"\$@\"}
+
+  # Find the directory that this script lives in.
+  thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\`
+  test \"x\$thisdir\" = \"x\$file\" && thisdir=.
+
+  # Follow symbolic links until we get to the real thisdir.
+  file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\`
+  while test -n \"\$file\"; do
+    destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\`
+
+    # If there was a directory component, then change thisdir.
+    if test \"x\$destdir\" != \"x\$file\"; then
+      case \"\$destdir\" in
+      [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;;
+      *) thisdir=\"\$thisdir/\$destdir\" ;;
+      esac
+    fi
+
+    file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\`
+    file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\`
+  done
+
+  # Usually 'no', except on cygwin/mingw when embedded into
+  # the cwrapper.
+  WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1
+  if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then
+    # special case for '.'
+    if test \"\$thisdir\" = \".\"; then
+      thisdir=\`pwd\`
+    fi
+    # remove .libs from thisdir
+    case \"\$thisdir\" in
+    *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;;
+    $objdir )   thisdir=. ;;
+    esac
+  fi
+
+  # Try to get the absolute directory name.
+  absdir=\`cd \"\$thisdir\" && pwd\`
+  test -n \"\$absdir\" && thisdir=\"\$absdir\"
+"
+
+	if test "$fast_install" = yes; then
+	  $ECHO "\
+  program=lt-'$outputname'$exeext
+  progdir=\"\$thisdir/$objdir\"
+
+  if test ! -f \"\$progdir/\$program\" ||
+     { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\
+       test \"X\$file\" != \"X\$progdir/\$program\"; }; then
+
+    file=\"\$\$-\$program\"
+
+    if test ! -d \"\$progdir\"; then
+      $MKDIR \"\$progdir\"
+    else
+      $RM \"\$progdir/\$file\"
+    fi"
+
+	  $ECHO "\
+
+    # relink executable if necessary
+    if test -n \"\$relink_command\"; then
+      if relink_command_output=\`eval \$relink_command 2>&1\`; then :
+      else
+	$ECHO \"\$relink_command_output\" >&2
+	$RM \"\$progdir/\$file\"
+	exit 1
+      fi
+    fi
+
+    $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null ||
+    { $RM \"\$progdir/\$program\";
+      $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; }
+    $RM \"\$progdir/\$file\"
+  fi"
+	else
+	  $ECHO "\
+  program='$outputname'
+  progdir=\"\$thisdir/$objdir\"
+"
+	fi
+
+	$ECHO "\
+
+  if test -f \"\$progdir/\$program\"; then"
+
+	# fixup the dll searchpath if we need to.
+	#
+	# Fix the DLL searchpath if we need to.  Do this before prepending
+	# to shlibpath, because on Windows, both are PATH and uninstalled
+	# libraries must come first.
+	if test -n "$dllsearchpath"; then
+	  $ECHO "\
+    # Add the dll search path components to the executable PATH
+    PATH=$dllsearchpath:\$PATH
+"
+	fi
+
+	# Export our shlibpath_var if we have one.
+	if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
+	  $ECHO "\
+    # Add our own library path to $shlibpath_var
+    $shlibpath_var=\"$temp_rpath\$$shlibpath_var\"
+
+    # Some systems cannot cope with colon-terminated $shlibpath_var
+    # The second colon is a workaround for a bug in BeOS R4 sed
+    $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\`
+
+    export $shlibpath_var
+"
+	fi
+
+	$ECHO "\
+    if test \"\$libtool_execute_magic\" != \"$magic\"; then
+      # Run the actual program with our arguments.
+      func_exec_program \${1+\"\$@\"}
+    fi
+  else
+    # The program doesn't exist.
+    \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2
+    \$ECHO \"This script is just a wrapper for \$program.\" 1>&2
+    \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2
+    exit 1
+  fi
+fi\
+"
+}
+
+
+# func_emit_cwrapperexe_src
+# emit the source code for a wrapper executable on stdout
+# Must ONLY be called from within func_mode_link because
+# it depends on a number of variable set therein.
+func_emit_cwrapperexe_src ()
+{
+	cat <
+#include 
+#ifdef _MSC_VER
+# include 
+# include 
+# include 
+#else
+# include 
+# include 
+# ifdef __CYGWIN__
+#  include 
+# endif
+#endif
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+/* declarations of non-ANSI functions */
+#if defined(__MINGW32__)
+# ifdef __STRICT_ANSI__
+int _putenv (const char *);
+# endif
+#elif defined(__CYGWIN__)
+# ifdef __STRICT_ANSI__
+char *realpath (const char *, char *);
+int putenv (char *);
+int setenv (const char *, const char *, int);
+# endif
+/* #elif defined (other platforms) ... */
+#endif
+
+/* portability defines, excluding path handling macros */
+#if defined(_MSC_VER)
+# define setmode _setmode
+# define stat    _stat
+# define chmod   _chmod
+# define getcwd  _getcwd
+# define putenv  _putenv
+# define S_IXUSR _S_IEXEC
+# ifndef _INTPTR_T_DEFINED
+#  define _INTPTR_T_DEFINED
+#  define intptr_t int
+# endif
+#elif defined(__MINGW32__)
+# define setmode _setmode
+# define stat    _stat
+# define chmod   _chmod
+# define getcwd  _getcwd
+# define putenv  _putenv
+#elif defined(__CYGWIN__)
+# define HAVE_SETENV
+# define FOPEN_WB "wb"
+/* #elif defined (other platforms) ... */
+#endif
+
+#if defined(PATH_MAX)
+# define LT_PATHMAX PATH_MAX
+#elif defined(MAXPATHLEN)
+# define LT_PATHMAX MAXPATHLEN
+#else
+# define LT_PATHMAX 1024
+#endif
+
+#ifndef S_IXOTH
+# define S_IXOTH 0
+#endif
+#ifndef S_IXGRP
+# define S_IXGRP 0
+#endif
+
+/* path handling portability macros */
+#ifndef DIR_SEPARATOR
+# define DIR_SEPARATOR '/'
+# define PATH_SEPARATOR ':'
+#endif
+
+#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
+  defined (__OS2__)
+# define HAVE_DOS_BASED_FILE_SYSTEM
+# define FOPEN_WB "wb"
+# ifndef DIR_SEPARATOR_2
+#  define DIR_SEPARATOR_2 '\\'
+# endif
+# ifndef PATH_SEPARATOR_2
+#  define PATH_SEPARATOR_2 ';'
+# endif
+#endif
+
+#ifndef DIR_SEPARATOR_2
+# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
+#else /* DIR_SEPARATOR_2 */
+# define IS_DIR_SEPARATOR(ch) \
+	(((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
+#endif /* DIR_SEPARATOR_2 */
+
+#ifndef PATH_SEPARATOR_2
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR)
+#else /* PATH_SEPARATOR_2 */
+# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2)
+#endif /* PATH_SEPARATOR_2 */
+
+#ifndef FOPEN_WB
+# define FOPEN_WB "w"
+#endif
+#ifndef _O_BINARY
+# define _O_BINARY 0
+#endif
+
+#define XMALLOC(type, num)      ((type *) xmalloc ((num) * sizeof(type)))
+#define XFREE(stale) do { \
+  if (stale) { free ((void *) stale); stale = 0; } \
+} while (0)
+
+#if defined(LT_DEBUGWRAPPER)
+static int lt_debug = 1;
+#else
+static int lt_debug = 0;
+#endif
+
+const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */
+
+void *xmalloc (size_t num);
+char *xstrdup (const char *string);
+const char *base_name (const char *name);
+char *find_executable (const char *wrapper);
+char *chase_symlinks (const char *pathspec);
+int make_executable (const char *path);
+int check_executable (const char *path);
+char *strendzap (char *str, const char *pat);
+void lt_debugprintf (const char *file, int line, const char *fmt, ...);
+void lt_fatal (const char *file, int line, const char *message, ...);
+static const char *nonnull (const char *s);
+static const char *nonempty (const char *s);
+void lt_setenv (const char *name, const char *value);
+char *lt_extend_str (const char *orig_value, const char *add, int to_end);
+void lt_update_exe_path (const char *name, const char *value);
+void lt_update_lib_path (const char *name, const char *value);
+char **prepare_spawn (char **argv);
+void lt_dump_script (FILE *f);
+EOF
+
+	    cat <= 0)
+      && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
+    return 1;
+  else
+    return 0;
+}
+
+int
+make_executable (const char *path)
+{
+  int rval = 0;
+  struct stat st;
+
+  lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n",
+                  nonempty (path));
+  if ((!path) || (!*path))
+    return 0;
+
+  if (stat (path, &st) >= 0)
+    {
+      rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR);
+    }
+  return rval;
+}
+
+/* Searches for the full path of the wrapper.  Returns
+   newly allocated full path name if found, NULL otherwise
+   Does not chase symlinks, even on platforms that support them.
+*/
+char *
+find_executable (const char *wrapper)
+{
+  int has_slash = 0;
+  const char *p;
+  const char *p_next;
+  /* static buffer for getcwd */
+  char tmp[LT_PATHMAX + 1];
+  int tmp_len;
+  char *concat_name;
+
+  lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n",
+                  nonempty (wrapper));
+
+  if ((wrapper == NULL) || (*wrapper == '\0'))
+    return NULL;
+
+  /* Absolute path? */
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+  if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':')
+    {
+      concat_name = xstrdup (wrapper);
+      if (check_executable (concat_name))
+	return concat_name;
+      XFREE (concat_name);
+    }
+  else
+    {
+#endif
+      if (IS_DIR_SEPARATOR (wrapper[0]))
+	{
+	  concat_name = xstrdup (wrapper);
+	  if (check_executable (concat_name))
+	    return concat_name;
+	  XFREE (concat_name);
+	}
+#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
+    }
+#endif
+
+  for (p = wrapper; *p; p++)
+    if (*p == '/')
+      {
+	has_slash = 1;
+	break;
+      }
+  if (!has_slash)
+    {
+      /* no slashes; search PATH */
+      const char *path = getenv ("PATH");
+      if (path != NULL)
+	{
+	  for (p = path; *p; p = p_next)
+	    {
+	      const char *q;
+	      size_t p_len;
+	      for (q = p; *q; q++)
+		if (IS_PATH_SEPARATOR (*q))
+		  break;
+	      p_len = q - p;
+	      p_next = (*q == '\0' ? q : q + 1);
+	      if (p_len == 0)
+		{
+		  /* empty path: current directory */
+		  if (getcwd (tmp, LT_PATHMAX) == NULL)
+		    lt_fatal (__FILE__, __LINE__, "getcwd failed: %s",
+                              nonnull (strerror (errno)));
+		  tmp_len = strlen (tmp);
+		  concat_name =
+		    XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+		  memcpy (concat_name, tmp, tmp_len);
+		  concat_name[tmp_len] = '/';
+		  strcpy (concat_name + tmp_len + 1, wrapper);
+		}
+	      else
+		{
+		  concat_name =
+		    XMALLOC (char, p_len + 1 + strlen (wrapper) + 1);
+		  memcpy (concat_name, p, p_len);
+		  concat_name[p_len] = '/';
+		  strcpy (concat_name + p_len + 1, wrapper);
+		}
+	      if (check_executable (concat_name))
+		return concat_name;
+	      XFREE (concat_name);
+	    }
+	}
+      /* not found in PATH; assume curdir */
+    }
+  /* Relative path | not found in path: prepend cwd */
+  if (getcwd (tmp, LT_PATHMAX) == NULL)
+    lt_fatal (__FILE__, __LINE__, "getcwd failed: %s",
+              nonnull (strerror (errno)));
+  tmp_len = strlen (tmp);
+  concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
+  memcpy (concat_name, tmp, tmp_len);
+  concat_name[tmp_len] = '/';
+  strcpy (concat_name + tmp_len + 1, wrapper);
+
+  if (check_executable (concat_name))
+    return concat_name;
+  XFREE (concat_name);
+  return NULL;
+}
+
+char *
+chase_symlinks (const char *pathspec)
+{
+#ifndef S_ISLNK
+  return xstrdup (pathspec);
+#else
+  char buf[LT_PATHMAX];
+  struct stat s;
+  char *tmp_pathspec = xstrdup (pathspec);
+  char *p;
+  int has_symlinks = 0;
+  while (strlen (tmp_pathspec) && !has_symlinks)
+    {
+      lt_debugprintf (__FILE__, __LINE__,
+		      "checking path component for symlinks: %s\n",
+		      tmp_pathspec);
+      if (lstat (tmp_pathspec, &s) == 0)
+	{
+	  if (S_ISLNK (s.st_mode) != 0)
+	    {
+	      has_symlinks = 1;
+	      break;
+	    }
+
+	  /* search backwards for last DIR_SEPARATOR */
+	  p = tmp_pathspec + strlen (tmp_pathspec) - 1;
+	  while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+	    p--;
+	  if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
+	    {
+	      /* no more DIR_SEPARATORS left */
+	      break;
+	    }
+	  *p = '\0';
+	}
+      else
+	{
+	  lt_fatal (__FILE__, __LINE__,
+		    "error accessing file \"%s\": %s",
+		    tmp_pathspec, nonnull (strerror (errno)));
+	}
+    }
+  XFREE (tmp_pathspec);
+
+  if (!has_symlinks)
+    {
+      return xstrdup (pathspec);
+    }
+
+  tmp_pathspec = realpath (pathspec, buf);
+  if (tmp_pathspec == 0)
+    {
+      lt_fatal (__FILE__, __LINE__,
+		"could not follow symlinks for %s", pathspec);
+    }
+  return xstrdup (tmp_pathspec);
+#endif
+}
+
+char *
+strendzap (char *str, const char *pat)
+{
+  size_t len, patlen;
+
+  assert (str != NULL);
+  assert (pat != NULL);
+
+  len = strlen (str);
+  patlen = strlen (pat);
+
+  if (patlen <= len)
+    {
+      str += len - patlen;
+      if (strcmp (str, pat) == 0)
+	*str = '\0';
+    }
+  return str;
+}
+
+void
+lt_debugprintf (const char *file, int line, const char *fmt, ...)
+{
+  va_list args;
+  if (lt_debug)
+    {
+      (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line);
+      va_start (args, fmt);
+      (void) vfprintf (stderr, fmt, args);
+      va_end (args);
+    }
+}
+
+static void
+lt_error_core (int exit_status, const char *file,
+	       int line, const char *mode,
+	       const char *message, va_list ap)
+{
+  fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode);
+  vfprintf (stderr, message, ap);
+  fprintf (stderr, ".\n");
+
+  if (exit_status >= 0)
+    exit (exit_status);
+}
+
+void
+lt_fatal (const char *file, int line, const char *message, ...)
+{
+  va_list ap;
+  va_start (ap, message);
+  lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap);
+  va_end (ap);
+}
+
+static const char *
+nonnull (const char *s)
+{
+  return s ? s : "(null)";
+}
+
+static const char *
+nonempty (const char *s)
+{
+  return (s && !*s) ? "(empty)" : nonnull (s);
+}
+
+void
+lt_setenv (const char *name, const char *value)
+{
+  lt_debugprintf (__FILE__, __LINE__,
+		  "(lt_setenv) setting '%s' to '%s'\n",
+                  nonnull (name), nonnull (value));
+  {
+#ifdef HAVE_SETENV
+    /* always make a copy, for consistency with !HAVE_SETENV */
+    char *str = xstrdup (value);
+    setenv (name, str, 1);
+#else
+    int len = strlen (name) + 1 + strlen (value) + 1;
+    char *str = XMALLOC (char, len);
+    sprintf (str, "%s=%s", name, value);
+    if (putenv (str) != EXIT_SUCCESS)
+      {
+        XFREE (str);
+      }
+#endif
+  }
+}
+
+char *
+lt_extend_str (const char *orig_value, const char *add, int to_end)
+{
+  char *new_value;
+  if (orig_value && *orig_value)
+    {
+      int orig_value_len = strlen (orig_value);
+      int add_len = strlen (add);
+      new_value = XMALLOC (char, add_len + orig_value_len + 1);
+      if (to_end)
+        {
+          strcpy (new_value, orig_value);
+          strcpy (new_value + orig_value_len, add);
+        }
+      else
+        {
+          strcpy (new_value, add);
+          strcpy (new_value + add_len, orig_value);
+        }
+    }
+  else
+    {
+      new_value = xstrdup (add);
+    }
+  return new_value;
+}
+
+void
+lt_update_exe_path (const char *name, const char *value)
+{
+  lt_debugprintf (__FILE__, __LINE__,
+		  "(lt_update_exe_path) modifying '%s' by prepending '%s'\n",
+                  nonnull (name), nonnull (value));
+
+  if (name && *name && value && *value)
+    {
+      char *new_value = lt_extend_str (getenv (name), value, 0);
+      /* some systems can't cope with a ':'-terminated path #' */
+      int len = strlen (new_value);
+      while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1]))
+        {
+          new_value[len-1] = '\0';
+        }
+      lt_setenv (name, new_value);
+      XFREE (new_value);
+    }
+}
+
+void
+lt_update_lib_path (const char *name, const char *value)
+{
+  lt_debugprintf (__FILE__, __LINE__,
+		  "(lt_update_lib_path) modifying '%s' by prepending '%s'\n",
+                  nonnull (name), nonnull (value));
+
+  if (name && *name && value && *value)
+    {
+      char *new_value = lt_extend_str (getenv (name), value, 0);
+      lt_setenv (name, new_value);
+      XFREE (new_value);
+    }
+}
+
+EOF
+	    case $host_os in
+	      mingw*)
+		cat <<"EOF"
+
+/* Prepares an argument vector before calling spawn().
+   Note that spawn() does not by itself call the command interpreter
+     (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") :
+      ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+         GetVersionEx(&v);
+         v.dwPlatformId == VER_PLATFORM_WIN32_NT;
+      }) ? "cmd.exe" : "command.com").
+   Instead it simply concatenates the arguments, separated by ' ', and calls
+   CreateProcess().  We must quote the arguments since Win32 CreateProcess()
+   interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a
+   special way:
+   - Space and tab are interpreted as delimiters. They are not treated as
+     delimiters if they are surrounded by double quotes: "...".
+   - Unescaped double quotes are removed from the input. Their only effect is
+     that within double quotes, space and tab are treated like normal
+     characters.
+   - Backslashes not followed by double quotes are not special.
+   - But 2*n+1 backslashes followed by a double quote become
+     n backslashes followed by a double quote (n >= 0):
+       \" -> "
+       \\\" -> \"
+       \\\\\" -> \\"
+ */
+#define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
+#define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
+char **
+prepare_spawn (char **argv)
+{
+  size_t argc;
+  char **new_argv;
+  size_t i;
+
+  /* Count number of arguments.  */
+  for (argc = 0; argv[argc] != NULL; argc++)
+    ;
+
+  /* Allocate new argument vector.  */
+  new_argv = XMALLOC (char *, argc + 1);
+
+  /* Put quoted arguments into the new argument vector.  */
+  for (i = 0; i < argc; i++)
+    {
+      const char *string = argv[i];
+
+      if (string[0] == '\0')
+	new_argv[i] = xstrdup ("\"\"");
+      else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL)
+	{
+	  int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL);
+	  size_t length;
+	  unsigned int backslashes;
+	  const char *s;
+	  char *quoted_string;
+	  char *p;
+
+	  length = 0;
+	  backslashes = 0;
+	  if (quote_around)
+	    length++;
+	  for (s = string; *s != '\0'; s++)
+	    {
+	      char c = *s;
+	      if (c == '"')
+		length += backslashes + 1;
+	      length++;
+	      if (c == '\\')
+		backslashes++;
+	      else
+		backslashes = 0;
+	    }
+	  if (quote_around)
+	    length += backslashes + 1;
+
+	  quoted_string = XMALLOC (char, length + 1);
+
+	  p = quoted_string;
+	  backslashes = 0;
+	  if (quote_around)
+	    *p++ = '"';
+	  for (s = string; *s != '\0'; s++)
+	    {
+	      char c = *s;
+	      if (c == '"')
+		{
+		  unsigned int j;
+		  for (j = backslashes + 1; j > 0; j--)
+		    *p++ = '\\';
+		}
+	      *p++ = c;
+	      if (c == '\\')
+		backslashes++;
+	      else
+		backslashes = 0;
+	    }
+	  if (quote_around)
+	    {
+	      unsigned int j;
+	      for (j = backslashes; j > 0; j--)
+		*p++ = '\\';
+	      *p++ = '"';
+	    }
+	  *p = '\0';
+
+	  new_argv[i] = quoted_string;
+	}
+      else
+	new_argv[i] = (char *) string;
+    }
+  new_argv[argc] = NULL;
+
+  return new_argv;
+}
+EOF
+		;;
+	    esac
+
+            cat <<"EOF"
+void lt_dump_script (FILE* f)
+{
+EOF
+	    func_emit_wrapper yes |
+	      $SED -n -e '
+s/^\(.\{79\}\)\(..*\)/\1\
+\2/
+h
+s/\([\\"]\)/\\\1/g
+s/$/\\n/
+s/\([^\n]*\).*/  fputs ("\1", f);/p
+g
+D'
+            cat <<"EOF"
+}
+EOF
+}
+# end: func_emit_cwrapperexe_src
+
+# func_win32_import_lib_p ARG
+# True if ARG is an import lib, as indicated by $file_magic_cmd
+func_win32_import_lib_p ()
+{
+    $opt_debug
+    case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in
+    *import*) : ;;
+    *) false ;;
+    esac
+}
+
+# func_mode_link arg...
+func_mode_link ()
+{
+    $opt_debug
+    case $host in
+    *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+      # It is impossible to link a dll without this setting, and
+      # we shouldn't force the makefile maintainer to figure out
+      # which system we are compiling for in order to pass an extra
+      # flag for every libtool invocation.
+      # allow_undefined=no
+
+      # FIXME: Unfortunately, there are problems with the above when trying
+      # to make a dll which has undefined symbols, in which case not
+      # even a static library is built.  For now, we need to specify
+      # -no-undefined on the libtool link line when we can be certain
+      # that all symbols are satisfied, otherwise we get a static library.
+      allow_undefined=yes
+      ;;
+    *)
+      allow_undefined=yes
+      ;;
+    esac
+    libtool_args=$nonopt
+    base_compile="$nonopt $@"
+    compile_command=$nonopt
+    finalize_command=$nonopt
+
+    compile_rpath=
+    finalize_rpath=
+    compile_shlibpath=
+    finalize_shlibpath=
+    convenience=
+    old_convenience=
+    deplibs=
+    old_deplibs=
+    compiler_flags=
+    linker_flags=
+    dllsearchpath=
+    lib_search_path=`pwd`
+    inst_prefix_dir=
+    new_inherited_linker_flags=
+
+    avoid_version=no
+    bindir=
+    dlfiles=
+    dlprefiles=
+    dlself=no
+    export_dynamic=no
+    export_symbols=
+    export_symbols_regex=
+    generated=
+    libobjs=
+    ltlibs=
+    module=no
+    no_install=no
+    objs=
+    non_pic_objects=
+    precious_files_regex=
+    prefer_static_libs=no
+    preload=no
+    prev=
+    prevarg=
+    release=
+    rpath=
+    xrpath=
+    perm_rpath=
+    temp_rpath=
+    thread_safe=no
+    vinfo=
+    vinfo_number=no
+    weak_libs=
+    single_module="${wl}-single_module"
+    func_infer_tag $base_compile
+
+    # We need to know -static, to get the right output filenames.
+    for arg
+    do
+      case $arg in
+      -shared)
+	test "$build_libtool_libs" != yes && \
+	  func_fatal_configuration "can not build a shared library"
+	build_old_libs=no
+	break
+	;;
+      -all-static | -static | -static-libtool-libs)
+	case $arg in
+	-all-static)
+	  if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
+	    func_warning "complete static linking is impossible in this configuration"
+	  fi
+	  if test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=yes
+	  ;;
+	-static)
+	  if test -z "$pic_flag" && test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=built
+	  ;;
+	-static-libtool-libs)
+	  if test -z "$pic_flag" && test -n "$link_static_flag"; then
+	    dlopen_self=$dlopen_self_static
+	  fi
+	  prefer_static_libs=yes
+	  ;;
+	esac
+	build_libtool_libs=no
+	build_old_libs=yes
+	break
+	;;
+      esac
+    done
+
+    # See if our shared archives depend on static archives.
+    test -n "$old_archive_from_new_cmds" && build_old_libs=yes
+
+    # Go through the arguments, transforming them on the way.
+    while test "$#" -gt 0; do
+      arg="$1"
+      shift
+      func_quote_for_eval "$arg"
+      qarg=$func_quote_for_eval_unquoted_result
+      func_append libtool_args " $func_quote_for_eval_result"
+
+      # If the previous option needs an argument, assign it.
+      if test -n "$prev"; then
+	case $prev in
+	output)
+	  func_append compile_command " @OUTPUT@"
+	  func_append finalize_command " @OUTPUT@"
+	  ;;
+	esac
+
+	case $prev in
+	bindir)
+	  bindir="$arg"
+	  prev=
+	  continue
+	  ;;
+	dlfiles|dlprefiles)
+	  if test "$preload" = no; then
+	    # Add the symbol object into the linking commands.
+	    func_append compile_command " @SYMFILE@"
+	    func_append finalize_command " @SYMFILE@"
+	    preload=yes
+	  fi
+	  case $arg in
+	  *.la | *.lo) ;;  # We handle these cases below.
+	  force)
+	    if test "$dlself" = no; then
+	      dlself=needless
+	      export_dynamic=yes
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  self)
+	    if test "$prev" = dlprefiles; then
+	      dlself=yes
+	    elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
+	      dlself=yes
+	    else
+	      dlself=needless
+	      export_dynamic=yes
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  *)
+	    if test "$prev" = dlfiles; then
+	      func_append dlfiles " $arg"
+	    else
+	      func_append dlprefiles " $arg"
+	    fi
+	    prev=
+	    continue
+	    ;;
+	  esac
+	  ;;
+	expsyms)
+	  export_symbols="$arg"
+	  test -f "$arg" \
+	    || func_fatal_error "symbol file \`$arg' does not exist"
+	  prev=
+	  continue
+	  ;;
+	expsyms_regex)
+	  export_symbols_regex="$arg"
+	  prev=
+	  continue
+	  ;;
+	framework)
+	  case $host in
+	    *-*-darwin*)
+	      case "$deplibs " in
+		*" $qarg.ltframework "*) ;;
+		*) func_append deplibs " $qarg.ltframework" # this is fixed later
+		   ;;
+	      esac
+	      ;;
+	  esac
+	  prev=
+	  continue
+	  ;;
+	inst_prefix)
+	  inst_prefix_dir="$arg"
+	  prev=
+	  continue
+	  ;;
+	objectlist)
+	  if test -f "$arg"; then
+	    save_arg=$arg
+	    moreargs=
+	    for fil in `cat "$save_arg"`
+	    do
+#	      func_append moreargs " $fil"
+	      arg=$fil
+	      # A libtool-controlled object.
+
+	      # Check to see that this really is a libtool object.
+	      if func_lalib_unsafe_p "$arg"; then
+		pic_object=
+		non_pic_object=
+
+		# Read the .lo file
+		func_source "$arg"
+
+		if test -z "$pic_object" ||
+		   test -z "$non_pic_object" ||
+		   test "$pic_object" = none &&
+		   test "$non_pic_object" = none; then
+		  func_fatal_error "cannot find name of object for \`$arg'"
+		fi
+
+		# Extract subdirectory from the argument.
+		func_dirname "$arg" "/" ""
+		xdir="$func_dirname_result"
+
+		if test "$pic_object" != none; then
+		  # Prepend the subdirectory the object is found in.
+		  pic_object="$xdir$pic_object"
+
+		  if test "$prev" = dlfiles; then
+		    if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+		      func_append dlfiles " $pic_object"
+		      prev=
+		      continue
+		    else
+		      # If libtool objects are unsupported, then we need to preload.
+		      prev=dlprefiles
+		    fi
+		  fi
+
+		  # CHECK ME:  I think I busted this.  -Ossama
+		  if test "$prev" = dlprefiles; then
+		    # Preload the old-style object.
+		    func_append dlprefiles " $pic_object"
+		    prev=
+		  fi
+
+		  # A PIC object.
+		  func_append libobjs " $pic_object"
+		  arg="$pic_object"
+		fi
+
+		# Non-PIC object.
+		if test "$non_pic_object" != none; then
+		  # Prepend the subdirectory the object is found in.
+		  non_pic_object="$xdir$non_pic_object"
+
+		  # A standard non-PIC object
+		  func_append non_pic_objects " $non_pic_object"
+		  if test -z "$pic_object" || test "$pic_object" = none ; then
+		    arg="$non_pic_object"
+		  fi
+		else
+		  # If the PIC object exists, use it instead.
+		  # $xdir was prepended to $pic_object above.
+		  non_pic_object="$pic_object"
+		  func_append non_pic_objects " $non_pic_object"
+		fi
+	      else
+		# Only an error if not doing a dry-run.
+		if $opt_dry_run; then
+		  # Extract subdirectory from the argument.
+		  func_dirname "$arg" "/" ""
+		  xdir="$func_dirname_result"
+
+		  func_lo2o "$arg"
+		  pic_object=$xdir$objdir/$func_lo2o_result
+		  non_pic_object=$xdir$func_lo2o_result
+		  func_append libobjs " $pic_object"
+		  func_append non_pic_objects " $non_pic_object"
+	        else
+		  func_fatal_error "\`$arg' is not a valid libtool object"
+		fi
+	      fi
+	    done
+	  else
+	    func_fatal_error "link input file \`$arg' does not exist"
+	  fi
+	  arg=$save_arg
+	  prev=
+	  continue
+	  ;;
+	precious_regex)
+	  precious_files_regex="$arg"
+	  prev=
+	  continue
+	  ;;
+	release)
+	  release="-$arg"
+	  prev=
+	  continue
+	  ;;
+	rpath | xrpath)
+	  # We need an absolute path.
+	  case $arg in
+	  [\\/]* | [A-Za-z]:[\\/]*) ;;
+	  *)
+	    func_fatal_error "only absolute run-paths are allowed"
+	    ;;
+	  esac
+	  if test "$prev" = rpath; then
+	    case "$rpath " in
+	    *" $arg "*) ;;
+	    *) func_append rpath " $arg" ;;
+	    esac
+	  else
+	    case "$xrpath " in
+	    *" $arg "*) ;;
+	    *) func_append xrpath " $arg" ;;
+	    esac
+	  fi
+	  prev=
+	  continue
+	  ;;
+	shrext)
+	  shrext_cmds="$arg"
+	  prev=
+	  continue
+	  ;;
+	weak)
+	  func_append weak_libs " $arg"
+	  prev=
+	  continue
+	  ;;
+	xcclinker)
+	  func_append linker_flags " $qarg"
+	  func_append compiler_flags " $qarg"
+	  prev=
+	  func_append compile_command " $qarg"
+	  func_append finalize_command " $qarg"
+	  continue
+	  ;;
+	xcompiler)
+	  func_append compiler_flags " $qarg"
+	  prev=
+	  func_append compile_command " $qarg"
+	  func_append finalize_command " $qarg"
+	  continue
+	  ;;
+	xlinker)
+	  func_append linker_flags " $qarg"
+	  func_append compiler_flags " $wl$qarg"
+	  prev=
+	  func_append compile_command " $wl$qarg"
+	  func_append finalize_command " $wl$qarg"
+	  continue
+	  ;;
+	*)
+	  eval "$prev=\"\$arg\""
+	  prev=
+	  continue
+	  ;;
+	esac
+      fi # test -n "$prev"
+
+      prevarg="$arg"
+
+      case $arg in
+      -all-static)
+	if test -n "$link_static_flag"; then
+	  # See comment for -static flag below, for more details.
+	  func_append compile_command " $link_static_flag"
+	  func_append finalize_command " $link_static_flag"
+	fi
+	continue
+	;;
+
+      -allow-undefined)
+	# FIXME: remove this flag sometime in the future.
+	func_fatal_error "\`-allow-undefined' must not be used because it is the default"
+	;;
+
+      -avoid-version)
+	avoid_version=yes
+	continue
+	;;
+
+      -bindir)
+	prev=bindir
+	continue
+	;;
+
+      -dlopen)
+	prev=dlfiles
+	continue
+	;;
+
+      -dlpreopen)
+	prev=dlprefiles
+	continue
+	;;
+
+      -export-dynamic)
+	export_dynamic=yes
+	continue
+	;;
+
+      -export-symbols | -export-symbols-regex)
+	if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
+	  func_fatal_error "more than one -exported-symbols argument is not allowed"
+	fi
+	if test "X$arg" = "X-export-symbols"; then
+	  prev=expsyms
+	else
+	  prev=expsyms_regex
+	fi
+	continue
+	;;
+
+      -framework)
+	prev=framework
+	continue
+	;;
+
+      -inst-prefix-dir)
+	prev=inst_prefix
+	continue
+	;;
+
+      # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
+      # so, if we see these flags be careful not to treat them like -L
+      -L[A-Z][A-Z]*:*)
+	case $with_gcc/$host in
+	no/*-*-irix* | /*-*-irix*)
+	  func_append compile_command " $arg"
+	  func_append finalize_command " $arg"
+	  ;;
+	esac
+	continue
+	;;
+
+      -L*)
+	func_stripname "-L" '' "$arg"
+	if test -z "$func_stripname_result"; then
+	  if test "$#" -gt 0; then
+	    func_fatal_error "require no space between \`-L' and \`$1'"
+	  else
+	    func_fatal_error "need path for \`-L' option"
+	  fi
+	fi
+	func_resolve_sysroot "$func_stripname_result"
+	dir=$func_resolve_sysroot_result
+	# We need an absolute path.
+	case $dir in
+	[\\/]* | [A-Za-z]:[\\/]*) ;;
+	*)
+	  absdir=`cd "$dir" && pwd`
+	  test -z "$absdir" && \
+	    func_fatal_error "cannot determine absolute directory name of \`$dir'"
+	  dir="$absdir"
+	  ;;
+	esac
+	case "$deplibs " in
+	*" -L$dir "* | *" $arg "*)
+	  # Will only happen for absolute or sysroot arguments
+	  ;;
+	*)
+	  # Preserve sysroot, but never include relative directories
+	  case $dir in
+	    [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;;
+	    *) func_append deplibs " -L$dir" ;;
+	  esac
+	  func_append lib_search_path " $dir"
+	  ;;
+	esac
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	  testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'`
+	  case :$dllsearchpath: in
+	  *":$dir:"*) ;;
+	  ::) dllsearchpath=$dir;;
+	  *) func_append dllsearchpath ":$dir";;
+	  esac
+	  case :$dllsearchpath: in
+	  *":$testbindir:"*) ;;
+	  ::) dllsearchpath=$testbindir;;
+	  *) func_append dllsearchpath ":$testbindir";;
+	  esac
+	  ;;
+	esac
+	continue
+	;;
+
+      -l*)
+	if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
+	  case $host in
+	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	    # These systems don't actually have a C or math library (as such)
+	    continue
+	    ;;
+	  *-*-os2*)
+	    # These systems don't actually have a C library (as such)
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	    # Do not include libc due to us having libc/libc_r.
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-rhapsody* | *-*-darwin1.[012])
+	    # Rhapsody C and math libraries are in the System framework
+	    func_append deplibs " System.ltframework"
+	    continue
+	    ;;
+	  *-*-sco3.2v5* | *-*-sco5v6*)
+	    # Causes problems with __ctype
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+	    # Compiler inserts libc in the correct place for threads to work
+	    test "X$arg" = "X-lc" && continue
+	    ;;
+	  esac
+	elif test "X$arg" = "X-lc_r"; then
+	 case $host in
+	 *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	   # Do not include libc_r directly, use -pthread flag.
+	   continue
+	   ;;
+	 esac
+	fi
+	func_append deplibs " $arg"
+	continue
+	;;
+
+      -module)
+	module=yes
+	continue
+	;;
+
+      # Tru64 UNIX uses -model [arg] to determine the layout of C++
+      # classes, name mangling, and exception handling.
+      # Darwin uses the -arch flag to determine output architecture.
+      -model|-arch|-isysroot|--sysroot)
+	func_append compiler_flags " $arg"
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+	prev=xcompiler
+	continue
+	;;
+
+      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+      |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
+	func_append compiler_flags " $arg"
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+	case "$new_inherited_linker_flags " in
+	    *" $arg "*) ;;
+	    * ) func_append new_inherited_linker_flags " $arg" ;;
+	esac
+	continue
+	;;
+
+      -multi_module)
+	single_module="${wl}-multi_module"
+	continue
+	;;
+
+      -no-fast-install)
+	fast_install=no
+	continue
+	;;
+
+      -no-install)
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
+	  # The PATH hackery in wrapper scripts is required on Windows
+	  # and Darwin in order for the loader to find any dlls it needs.
+	  func_warning "\`-no-install' is ignored for $host"
+	  func_warning "assuming \`-no-fast-install' instead"
+	  fast_install=no
+	  ;;
+	*) no_install=yes ;;
+	esac
+	continue
+	;;
+
+      -no-undefined)
+	allow_undefined=no
+	continue
+	;;
+
+      -objectlist)
+	prev=objectlist
+	continue
+	;;
+
+      -o) prev=output ;;
+
+      -precious-files-regex)
+	prev=precious_regex
+	continue
+	;;
+
+      -release)
+	prev=release
+	continue
+	;;
+
+      -rpath)
+	prev=rpath
+	continue
+	;;
+
+      -R)
+	prev=xrpath
+	continue
+	;;
+
+      -R*)
+	func_stripname '-R' '' "$arg"
+	dir=$func_stripname_result
+	# We need an absolute path.
+	case $dir in
+	[\\/]* | [A-Za-z]:[\\/]*) ;;
+	=*)
+	  func_stripname '=' '' "$dir"
+	  dir=$lt_sysroot$func_stripname_result
+	  ;;
+	*)
+	  func_fatal_error "only absolute run-paths are allowed"
+	  ;;
+	esac
+	case "$xrpath " in
+	*" $dir "*) ;;
+	*) func_append xrpath " $dir" ;;
+	esac
+	continue
+	;;
+
+      -shared)
+	# The effects of -shared are defined in a previous loop.
+	continue
+	;;
+
+      -shrext)
+	prev=shrext
+	continue
+	;;
+
+      -static | -static-libtool-libs)
+	# The effects of -static are defined in a previous loop.
+	# We used to do the same as -all-static on platforms that
+	# didn't have a PIC flag, but the assumption that the effects
+	# would be equivalent was wrong.  It would break on at least
+	# Digital Unix and AIX.
+	continue
+	;;
+
+      -thread-safe)
+	thread_safe=yes
+	continue
+	;;
+
+      -version-info)
+	prev=vinfo
+	continue
+	;;
+
+      -version-number)
+	prev=vinfo
+	vinfo_number=yes
+	continue
+	;;
+
+      -weak)
+        prev=weak
+	continue
+	;;
+
+      -Wc,*)
+	func_stripname '-Wc,' '' "$arg"
+	args=$func_stripname_result
+	arg=
+	save_ifs="$IFS"; IFS=','
+	for flag in $args; do
+	  IFS="$save_ifs"
+          func_quote_for_eval "$flag"
+	  func_append arg " $func_quote_for_eval_result"
+	  func_append compiler_flags " $func_quote_for_eval_result"
+	done
+	IFS="$save_ifs"
+	func_stripname ' ' '' "$arg"
+	arg=$func_stripname_result
+	;;
+
+      -Wl,*)
+	func_stripname '-Wl,' '' "$arg"
+	args=$func_stripname_result
+	arg=
+	save_ifs="$IFS"; IFS=','
+	for flag in $args; do
+	  IFS="$save_ifs"
+          func_quote_for_eval "$flag"
+	  func_append arg " $wl$func_quote_for_eval_result"
+	  func_append compiler_flags " $wl$func_quote_for_eval_result"
+	  func_append linker_flags " $func_quote_for_eval_result"
+	done
+	IFS="$save_ifs"
+	func_stripname ' ' '' "$arg"
+	arg=$func_stripname_result
+	;;
+
+      -Xcompiler)
+	prev=xcompiler
+	continue
+	;;
+
+      -Xlinker)
+	prev=xlinker
+	continue
+	;;
+
+      -XCClinker)
+	prev=xcclinker
+	continue
+	;;
+
+      # -msg_* for osf cc
+      -msg_*)
+	func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+
+      # Flags to be passed through unchanged, with rationale:
+      # -64, -mips[0-9]      enable 64-bit mode for the SGI compiler
+      # -r[0-9][0-9]*        specify processor for the SGI compiler
+      # -xarch=*, -xtarget=* enable 64-bit mode for the Sun compiler
+      # +DA*, +DD*           enable 64-bit mode for the HP compiler
+      # -q*                  compiler args for the IBM compiler
+      # -m*, -t[45]*, -txscale* architecture-specific flags for GCC
+      # -F/path              path to uninstalled frameworks, gcc on darwin
+      # -p, -pg, --coverage, -fprofile-*  profiling flags for GCC
+      # @file                GCC response files
+      # -tp=*                Portland pgcc target processor selection
+      # --sysroot=*          for sysroot support
+      # -O*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
+      -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
+      -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
+      -O*|-flto*|-fwhopr*|-fuse-linker-plugin)
+        func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+        func_append compile_command " $arg"
+        func_append finalize_command " $arg"
+        func_append compiler_flags " $arg"
+        continue
+        ;;
+
+      # Some other compiler flag.
+      -* | +*)
+        func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+
+      *.$objext)
+	# A standard object.
+	func_append objs " $arg"
+	;;
+
+      *.lo)
+	# A libtool-controlled object.
+
+	# Check to see that this really is a libtool object.
+	if func_lalib_unsafe_p "$arg"; then
+	  pic_object=
+	  non_pic_object=
+
+	  # Read the .lo file
+	  func_source "$arg"
+
+	  if test -z "$pic_object" ||
+	     test -z "$non_pic_object" ||
+	     test "$pic_object" = none &&
+	     test "$non_pic_object" = none; then
+	    func_fatal_error "cannot find name of object for \`$arg'"
+	  fi
+
+	  # Extract subdirectory from the argument.
+	  func_dirname "$arg" "/" ""
+	  xdir="$func_dirname_result"
+
+	  if test "$pic_object" != none; then
+	    # Prepend the subdirectory the object is found in.
+	    pic_object="$xdir$pic_object"
+
+	    if test "$prev" = dlfiles; then
+	      if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
+		func_append dlfiles " $pic_object"
+		prev=
+		continue
+	      else
+		# If libtool objects are unsupported, then we need to preload.
+		prev=dlprefiles
+	      fi
+	    fi
+
+	    # CHECK ME:  I think I busted this.  -Ossama
+	    if test "$prev" = dlprefiles; then
+	      # Preload the old-style object.
+	      func_append dlprefiles " $pic_object"
+	      prev=
+	    fi
+
+	    # A PIC object.
+	    func_append libobjs " $pic_object"
+	    arg="$pic_object"
+	  fi
+
+	  # Non-PIC object.
+	  if test "$non_pic_object" != none; then
+	    # Prepend the subdirectory the object is found in.
+	    non_pic_object="$xdir$non_pic_object"
+
+	    # A standard non-PIC object
+	    func_append non_pic_objects " $non_pic_object"
+	    if test -z "$pic_object" || test "$pic_object" = none ; then
+	      arg="$non_pic_object"
+	    fi
+	  else
+	    # If the PIC object exists, use it instead.
+	    # $xdir was prepended to $pic_object above.
+	    non_pic_object="$pic_object"
+	    func_append non_pic_objects " $non_pic_object"
+	  fi
+	else
+	  # Only an error if not doing a dry-run.
+	  if $opt_dry_run; then
+	    # Extract subdirectory from the argument.
+	    func_dirname "$arg" "/" ""
+	    xdir="$func_dirname_result"
+
+	    func_lo2o "$arg"
+	    pic_object=$xdir$objdir/$func_lo2o_result
+	    non_pic_object=$xdir$func_lo2o_result
+	    func_append libobjs " $pic_object"
+	    func_append non_pic_objects " $non_pic_object"
+	  else
+	    func_fatal_error "\`$arg' is not a valid libtool object"
+	  fi
+	fi
+	;;
+
+      *.$libext)
+	# An archive.
+	func_append deplibs " $arg"
+	func_append old_deplibs " $arg"
+	continue
+	;;
+
+      *.la)
+	# A libtool-controlled library.
+
+	func_resolve_sysroot "$arg"
+	if test "$prev" = dlfiles; then
+	  # This library was specified with -dlopen.
+	  func_append dlfiles " $func_resolve_sysroot_result"
+	  prev=
+	elif test "$prev" = dlprefiles; then
+	  # The library was specified with -dlpreopen.
+	  func_append dlprefiles " $func_resolve_sysroot_result"
+	  prev=
+	else
+	  func_append deplibs " $func_resolve_sysroot_result"
+	fi
+	continue
+	;;
+
+      # Some other compiler argument.
+      *)
+	# Unknown arguments in both finalize_command and compile_command need
+	# to be aesthetically quoted because they are evaled later.
+	func_quote_for_eval "$arg"
+	arg="$func_quote_for_eval_result"
+	;;
+      esac # arg
+
+      # Now actually substitute the argument into the commands.
+      if test -n "$arg"; then
+	func_append compile_command " $arg"
+	func_append finalize_command " $arg"
+      fi
+    done # argument parsing loop
+
+    test -n "$prev" && \
+      func_fatal_help "the \`$prevarg' option requires an argument"
+
+    if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
+      eval arg=\"$export_dynamic_flag_spec\"
+      func_append compile_command " $arg"
+      func_append finalize_command " $arg"
+    fi
+
+    oldlibs=
+    # calculate the name of the file, without its directory
+    func_basename "$output"
+    outputname="$func_basename_result"
+    libobjs_save="$libobjs"
+
+    if test -n "$shlibpath_var"; then
+      # get the directories listed in $shlibpath_var
+      eval shlib_search_path=\`\$ECHO \"\${$shlibpath_var}\" \| \$SED \'s/:/ /g\'\`
+    else
+      shlib_search_path=
+    fi
+    eval sys_lib_search_path=\"$sys_lib_search_path_spec\"
+    eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\"
+
+    func_dirname "$output" "/" ""
+    output_objdir="$func_dirname_result$objdir"
+    func_to_tool_file "$output_objdir/"
+    tool_output_objdir=$func_to_tool_file_result
+    # Create the object directory.
+    func_mkdir_p "$output_objdir"
+
+    # Determine the type of output
+    case $output in
+    "")
+      func_fatal_help "you must specify an output file"
+      ;;
+    *.$libext) linkmode=oldlib ;;
+    *.lo | *.$objext) linkmode=obj ;;
+    *.la) linkmode=lib ;;
+    *) linkmode=prog ;; # Anything else should be a program.
+    esac
+
+    specialdeplibs=
+
+    libs=
+    # Find all interdependent deplibs by searching for libraries
+    # that are linked more than once (e.g. -la -lb -la)
+    for deplib in $deplibs; do
+      if $opt_preserve_dup_deps ; then
+	case "$libs " in
+	*" $deplib "*) func_append specialdeplibs " $deplib" ;;
+	esac
+      fi
+      func_append libs " $deplib"
+    done
+
+    if test "$linkmode" = lib; then
+      libs="$predeps $libs $compiler_lib_search_path $postdeps"
+
+      # Compute libraries that are listed more than once in $predeps
+      # $postdeps and mark them as special (i.e., whose duplicates are
+      # not to be eliminated).
+      pre_post_deps=
+      if $opt_duplicate_compiler_generated_deps; then
+	for pre_post_dep in $predeps $postdeps; do
+	  case "$pre_post_deps " in
+	  *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;;
+	  esac
+	  func_append pre_post_deps " $pre_post_dep"
+	done
+      fi
+      pre_post_deps=
+    fi
+
+    deplibs=
+    newdependency_libs=
+    newlib_search_path=
+    need_relink=no # whether we're linking any uninstalled libtool libraries
+    notinst_deplibs= # not-installed libtool libraries
+    notinst_path= # paths that contain not-installed libtool libraries
+
+    case $linkmode in
+    lib)
+	passes="conv dlpreopen link"
+	for file in $dlfiles $dlprefiles; do
+	  case $file in
+	  *.la) ;;
+	  *)
+	    func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file"
+	    ;;
+	  esac
+	done
+	;;
+    prog)
+	compile_deplibs=
+	finalize_deplibs=
+	alldeplibs=no
+	newdlfiles=
+	newdlprefiles=
+	passes="conv scan dlopen dlpreopen link"
+	;;
+    *)  passes="conv"
+	;;
+    esac
+
+    for pass in $passes; do
+      # The preopen pass in lib mode reverses $deplibs; put it back here
+      # so that -L comes before libs that need it for instance...
+      if test "$linkmode,$pass" = "lib,link"; then
+	## FIXME: Find the place where the list is rebuilt in the wrong
+	##        order, and fix it there properly
+        tmp_deplibs=
+	for deplib in $deplibs; do
+	  tmp_deplibs="$deplib $tmp_deplibs"
+	done
+	deplibs="$tmp_deplibs"
+      fi
+
+      if test "$linkmode,$pass" = "lib,link" ||
+	 test "$linkmode,$pass" = "prog,scan"; then
+	libs="$deplibs"
+	deplibs=
+      fi
+      if test "$linkmode" = prog; then
+	case $pass in
+	dlopen) libs="$dlfiles" ;;
+	dlpreopen) libs="$dlprefiles" ;;
+	link)
+	  libs="$deplibs %DEPLIBS%"
+	  test "X$link_all_deplibs" != Xno && libs="$libs $dependency_libs"
+	  ;;
+	esac
+      fi
+      if test "$linkmode,$pass" = "lib,dlpreopen"; then
+	# Collect and forward deplibs of preopened libtool libs
+	for lib in $dlprefiles; do
+	  # Ignore non-libtool-libs
+	  dependency_libs=
+	  func_resolve_sysroot "$lib"
+	  case $lib in
+	  *.la)	func_source "$func_resolve_sysroot_result" ;;
+	  esac
+
+	  # Collect preopened libtool deplibs, except any this library
+	  # has declared as weak libs
+	  for deplib in $dependency_libs; do
+	    func_basename "$deplib"
+            deplib_base=$func_basename_result
+	    case " $weak_libs " in
+	    *" $deplib_base "*) ;;
+	    *) func_append deplibs " $deplib" ;;
+	    esac
+	  done
+	done
+	libs="$dlprefiles"
+      fi
+      if test "$pass" = dlopen; then
+	# Collect dlpreopened libraries
+	save_deplibs="$deplibs"
+	deplibs=
+      fi
+
+      for deplib in $libs; do
+	lib=
+	found=no
+	case $deplib in
+	-mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+        |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
+	  if test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$deplib $compile_deplibs"
+	    finalize_deplibs="$deplib $finalize_deplibs"
+	  else
+	    func_append compiler_flags " $deplib"
+	    if test "$linkmode" = lib ; then
+		case "$new_inherited_linker_flags " in
+		    *" $deplib "*) ;;
+		    * ) func_append new_inherited_linker_flags " $deplib" ;;
+		esac
+	    fi
+	  fi
+	  continue
+	  ;;
+	-l*)
+	  if test "$linkmode" != lib && test "$linkmode" != prog; then
+	    func_warning "\`-l' is ignored for archives/objects"
+	    continue
+	  fi
+	  func_stripname '-l' '' "$deplib"
+	  name=$func_stripname_result
+	  if test "$linkmode" = lib; then
+	    searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path"
+	  else
+	    searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path"
+	  fi
+	  for searchdir in $searchdirs; do
+	    for search_ext in .la $std_shrext .so .a; do
+	      # Search the libtool library
+	      lib="$searchdir/lib${name}${search_ext}"
+	      if test -f "$lib"; then
+		if test "$search_ext" = ".la"; then
+		  found=yes
+		else
+		  found=no
+		fi
+		break 2
+	      fi
+	    done
+	  done
+	  if test "$found" != yes; then
+	    # deplib doesn't seem to be a libtool library
+	    if test "$linkmode,$pass" = "prog,link"; then
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    else
+	      deplibs="$deplib $deplibs"
+	      test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+	    fi
+	    continue
+	  else # deplib is a libtool library
+	    # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib,
+	    # We need to do some special things here, and not later.
+	    if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+	      case " $predeps $postdeps " in
+	      *" $deplib "*)
+		if func_lalib_p "$lib"; then
+		  library_names=
+		  old_library=
+		  func_source "$lib"
+		  for l in $old_library $library_names; do
+		    ll="$l"
+		  done
+		  if test "X$ll" = "X$old_library" ; then # only static version available
+		    found=no
+		    func_dirname "$lib" "" "."
+		    ladir="$func_dirname_result"
+		    lib=$ladir/$old_library
+		    if test "$linkmode,$pass" = "prog,link"; then
+		      compile_deplibs="$deplib $compile_deplibs"
+		      finalize_deplibs="$deplib $finalize_deplibs"
+		    else
+		      deplibs="$deplib $deplibs"
+		      test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
+		    fi
+		    continue
+		  fi
+		fi
+		;;
+	      *) ;;
+	      esac
+	    fi
+	  fi
+	  ;; # -l
+	*.ltframework)
+	  if test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$deplib $compile_deplibs"
+	    finalize_deplibs="$deplib $finalize_deplibs"
+	  else
+	    deplibs="$deplib $deplibs"
+	    if test "$linkmode" = lib ; then
+		case "$new_inherited_linker_flags " in
+		    *" $deplib "*) ;;
+		    * ) func_append new_inherited_linker_flags " $deplib" ;;
+		esac
+	    fi
+	  fi
+	  continue
+	  ;;
+	-L*)
+	  case $linkmode in
+	  lib)
+	    deplibs="$deplib $deplibs"
+	    test "$pass" = conv && continue
+	    newdependency_libs="$deplib $newdependency_libs"
+	    func_stripname '-L' '' "$deplib"
+	    func_resolve_sysroot "$func_stripname_result"
+	    func_append newlib_search_path " $func_resolve_sysroot_result"
+	    ;;
+	  prog)
+	    if test "$pass" = conv; then
+	      deplibs="$deplib $deplibs"
+	      continue
+	    fi
+	    if test "$pass" = scan; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    fi
+	    func_stripname '-L' '' "$deplib"
+	    func_resolve_sysroot "$func_stripname_result"
+	    func_append newlib_search_path " $func_resolve_sysroot_result"
+	    ;;
+	  *)
+	    func_warning "\`-L' is ignored for archives/objects"
+	    ;;
+	  esac # linkmode
+	  continue
+	  ;; # -L
+	-R*)
+	  if test "$pass" = link; then
+	    func_stripname '-R' '' "$deplib"
+	    func_resolve_sysroot "$func_stripname_result"
+	    dir=$func_resolve_sysroot_result
+	    # Make sure the xrpath contains only unique directories.
+	    case "$xrpath " in
+	    *" $dir "*) ;;
+	    *) func_append xrpath " $dir" ;;
+	    esac
+	  fi
+	  deplibs="$deplib $deplibs"
+	  continue
+	  ;;
+	*.la)
+	  func_resolve_sysroot "$deplib"
+	  lib=$func_resolve_sysroot_result
+	  ;;
+	*.$libext)
+	  if test "$pass" = conv; then
+	    deplibs="$deplib $deplibs"
+	    continue
+	  fi
+	  case $linkmode in
+	  lib)
+	    # Linking convenience modules into shared libraries is allowed,
+	    # but linking other static libraries is non-portable.
+	    case " $dlpreconveniencelibs " in
+	    *" $deplib "*) ;;
+	    *)
+	      valid_a_lib=no
+	      case $deplibs_check_method in
+		match_pattern*)
+		  set dummy $deplibs_check_method; shift
+		  match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+		  if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \
+		    | $EGREP "$match_pattern_regex" > /dev/null; then
+		    valid_a_lib=yes
+		  fi
+		;;
+		pass_all)
+		  valid_a_lib=yes
+		;;
+	      esac
+	      if test "$valid_a_lib" != yes; then
+		echo
+		$ECHO "*** Warning: Trying to link with static lib archive $deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because the file extensions .$libext of this argument makes me believe"
+		echo "*** that it is just a static archive that I should not use here."
+	      else
+		echo
+		$ECHO "*** Warning: Linking the shared library $output against the"
+		$ECHO "*** static library $deplib is not portable!"
+		deplibs="$deplib $deplibs"
+	      fi
+	      ;;
+	    esac
+	    continue
+	    ;;
+	  prog)
+	    if test "$pass" != link; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    fi
+	    continue
+	    ;;
+	  esac # linkmode
+	  ;; # *.$libext
+	*.lo | *.$objext)
+	  if test "$pass" = conv; then
+	    deplibs="$deplib $deplibs"
+	  elif test "$linkmode" = prog; then
+	    if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
+	      # If there is no dlopen support or we're linking statically,
+	      # we need to preload.
+	      func_append newdlprefiles " $deplib"
+	      compile_deplibs="$deplib $compile_deplibs"
+	      finalize_deplibs="$deplib $finalize_deplibs"
+	    else
+	      func_append newdlfiles " $deplib"
+	    fi
+	  fi
+	  continue
+	  ;;
+	%DEPLIBS%)
+	  alldeplibs=yes
+	  continue
+	  ;;
+	esac # case $deplib
+
+	if test "$found" = yes || test -f "$lib"; then :
+	else
+	  func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'"
+	fi
+
+	# Check to see that this really is a libtool archive.
+	func_lalib_unsafe_p "$lib" \
+	  || func_fatal_error "\`$lib' is not a valid libtool archive"
+
+	func_dirname "$lib" "" "."
+	ladir="$func_dirname_result"
+
+	dlname=
+	dlopen=
+	dlpreopen=
+	libdir=
+	library_names=
+	old_library=
+	inherited_linker_flags=
+	# If the library was installed with an old release of libtool,
+	# it will not redefine variables installed, or shouldnotlink
+	installed=yes
+	shouldnotlink=no
+	avoidtemprpath=
+
+
+	# Read the .la file
+	func_source "$lib"
+
+	# Convert "-framework foo" to "foo.ltframework"
+	if test -n "$inherited_linker_flags"; then
+	  tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`
+	  for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
+	    case " $new_inherited_linker_flags " in
+	      *" $tmp_inherited_linker_flag "*) ;;
+	      *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";;
+	    esac
+	  done
+	fi
+	dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	if test "$linkmode,$pass" = "lib,link" ||
+	   test "$linkmode,$pass" = "prog,scan" ||
+	   { test "$linkmode" != prog && test "$linkmode" != lib; }; then
+	  test -n "$dlopen" && func_append dlfiles " $dlopen"
+	  test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen"
+	fi
+
+	if test "$pass" = conv; then
+	  # Only check for convenience libraries
+	  deplibs="$lib $deplibs"
+	  if test -z "$libdir"; then
+	    if test -z "$old_library"; then
+	      func_fatal_error "cannot find name of link library for \`$lib'"
+	    fi
+	    # It is a libtool convenience library, so add in its objects.
+	    func_append convenience " $ladir/$objdir/$old_library"
+	    func_append old_convenience " $ladir/$objdir/$old_library"
+	    tmp_libs=
+	    for deplib in $dependency_libs; do
+	      deplibs="$deplib $deplibs"
+	      if $opt_preserve_dup_deps ; then
+		case "$tmp_libs " in
+		*" $deplib "*) func_append specialdeplibs " $deplib" ;;
+		esac
+	      fi
+	      func_append tmp_libs " $deplib"
+	    done
+	  elif test "$linkmode" != prog && test "$linkmode" != lib; then
+	    func_fatal_error "\`$lib' is not a convenience library"
+	  fi
+	  continue
+	fi # $pass = conv
+
+
+	# Get the name of the library we link against.
+	linklib=
+	if test -n "$old_library" &&
+	   { test "$prefer_static_libs" = yes ||
+	     test "$prefer_static_libs,$installed" = "built,no"; }; then
+	  linklib=$old_library
+	else
+	  for l in $old_library $library_names; do
+	    linklib="$l"
+	  done
+	fi
+	if test -z "$linklib"; then
+	  func_fatal_error "cannot find name of link library for \`$lib'"
+	fi
+
+	# This library was specified with -dlopen.
+	if test "$pass" = dlopen; then
+	  if test -z "$libdir"; then
+	    func_fatal_error "cannot -dlopen a convenience library: \`$lib'"
+	  fi
+	  if test -z "$dlname" ||
+	     test "$dlopen_support" != yes ||
+	     test "$build_libtool_libs" = no; then
+	    # If there is no dlname, no dlopen support or we're linking
+	    # statically, we need to preload.  We also need to preload any
+	    # dependent libraries so libltdl's deplib preloader doesn't
+	    # bomb out in the load deplibs phase.
+	    func_append dlprefiles " $lib $dependency_libs"
+	  else
+	    func_append newdlfiles " $lib"
+	  fi
+	  continue
+	fi # $pass = dlopen
+
+	# We need an absolute path.
+	case $ladir in
+	[\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
+	*)
+	  abs_ladir=`cd "$ladir" && pwd`
+	  if test -z "$abs_ladir"; then
+	    func_warning "cannot determine absolute directory name of \`$ladir'"
+	    func_warning "passing it literally to the linker, although it might fail"
+	    abs_ladir="$ladir"
+	  fi
+	  ;;
+	esac
+	func_basename "$lib"
+	laname="$func_basename_result"
+
+	# Find the relevant object directory and library name.
+	if test "X$installed" = Xyes; then
+	  if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+	    func_warning "library \`$lib' was moved."
+	    dir="$ladir"
+	    absdir="$abs_ladir"
+	    libdir="$abs_ladir"
+	  else
+	    dir="$lt_sysroot$libdir"
+	    absdir="$lt_sysroot$libdir"
+	  fi
+	  test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
+	else
+	  if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then
+	    dir="$ladir"
+	    absdir="$abs_ladir"
+	    # Remove this search path later
+	    func_append notinst_path " $abs_ladir"
+	  else
+	    dir="$ladir/$objdir"
+	    absdir="$abs_ladir/$objdir"
+	    # Remove this search path later
+	    func_append notinst_path " $abs_ladir"
+	  fi
+	fi # $installed = yes
+	func_stripname 'lib' '.la' "$laname"
+	name=$func_stripname_result
+
+	# This library was specified with -dlpreopen.
+	if test "$pass" = dlpreopen; then
+	  if test -z "$libdir" && test "$linkmode" = prog; then
+	    func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
+	  fi
+	  case "$host" in
+	    # special handling for platforms with PE-DLLs.
+	    *cygwin* | *mingw* | *cegcc* )
+	      # Linker will automatically link against shared library if both
+	      # static and shared are present.  Therefore, ensure we extract
+	      # symbols from the import library if a shared library is present
+	      # (otherwise, the dlopen module name will be incorrect).  We do
+	      # this by putting the import library name into $newdlprefiles.
+	      # We recover the dlopen module name by 'saving' the la file
+	      # name in a special purpose variable, and (later) extracting the
+	      # dlname from the la file.
+	      if test -n "$dlname"; then
+	        func_tr_sh "$dir/$linklib"
+	        eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname"
+	        func_append newdlprefiles " $dir/$linklib"
+	      else
+	        func_append newdlprefiles " $dir/$old_library"
+	        # Keep a list of preopened convenience libraries to check
+	        # that they are being used correctly in the link pass.
+	        test -z "$libdir" && \
+	          func_append dlpreconveniencelibs " $dir/$old_library"
+	      fi
+	    ;;
+	    * )
+	      # Prefer using a static library (so that no silly _DYNAMIC symbols
+	      # are required to link).
+	      if test -n "$old_library"; then
+	        func_append newdlprefiles " $dir/$old_library"
+	        # Keep a list of preopened convenience libraries to check
+	        # that they are being used correctly in the link pass.
+	        test -z "$libdir" && \
+	          func_append dlpreconveniencelibs " $dir/$old_library"
+	      # Otherwise, use the dlname, so that lt_dlopen finds it.
+	      elif test -n "$dlname"; then
+	        func_append newdlprefiles " $dir/$dlname"
+	      else
+	        func_append newdlprefiles " $dir/$linklib"
+	      fi
+	    ;;
+	  esac
+	fi # $pass = dlpreopen
+
+	if test -z "$libdir"; then
+	  # Link the convenience library
+	  if test "$linkmode" = lib; then
+	    deplibs="$dir/$old_library $deplibs"
+	  elif test "$linkmode,$pass" = "prog,link"; then
+	    compile_deplibs="$dir/$old_library $compile_deplibs"
+	    finalize_deplibs="$dir/$old_library $finalize_deplibs"
+	  else
+	    deplibs="$lib $deplibs" # used for prog,scan pass
+	  fi
+	  continue
+	fi
+
+
+	if test "$linkmode" = prog && test "$pass" != link; then
+	  func_append newlib_search_path " $ladir"
+	  deplibs="$lib $deplibs"
+
+	  linkalldeplibs=no
+	  if test "$link_all_deplibs" != no || test -z "$library_names" ||
+	     test "$build_libtool_libs" = no; then
+	    linkalldeplibs=yes
+	  fi
+
+	  tmp_libs=
+	  for deplib in $dependency_libs; do
+	    case $deplib in
+	    -L*) func_stripname '-L' '' "$deplib"
+	         func_resolve_sysroot "$func_stripname_result"
+	         func_append newlib_search_path " $func_resolve_sysroot_result"
+		 ;;
+	    esac
+	    # Need to link against all dependency_libs?
+	    if test "$linkalldeplibs" = yes; then
+	      deplibs="$deplib $deplibs"
+	    else
+	      # Need to hardcode shared library paths
+	      # or/and link against static libraries
+	      newdependency_libs="$deplib $newdependency_libs"
+	    fi
+	    if $opt_preserve_dup_deps ; then
+	      case "$tmp_libs " in
+	      *" $deplib "*) func_append specialdeplibs " $deplib" ;;
+	      esac
+	    fi
+	    func_append tmp_libs " $deplib"
+	  done # for deplib
+	  continue
+	fi # $linkmode = prog...
+
+	if test "$linkmode,$pass" = "prog,link"; then
+	  if test -n "$library_names" &&
+	     { { test "$prefer_static_libs" = no ||
+	         test "$prefer_static_libs,$installed" = "built,yes"; } ||
+	       test -z "$old_library"; }; then
+	    # We need to hardcode the library path
+	    if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then
+	      # Make sure the rpath contains only unique directories.
+	      case "$temp_rpath:" in
+	      *"$absdir:"*) ;;
+	      *) func_append temp_rpath "$absdir:" ;;
+	      esac
+	    fi
+
+	    # Hardcode the library path.
+	    # Skip directories that are in the system default run-time
+	    # search path.
+	    case " $sys_lib_dlsearch_path " in
+	    *" $absdir "*) ;;
+	    *)
+	      case "$compile_rpath " in
+	      *" $absdir "*) ;;
+	      *) func_append compile_rpath " $absdir" ;;
+	      esac
+	      ;;
+	    esac
+	    case " $sys_lib_dlsearch_path " in
+	    *" $libdir "*) ;;
+	    *)
+	      case "$finalize_rpath " in
+	      *" $libdir "*) ;;
+	      *) func_append finalize_rpath " $libdir" ;;
+	      esac
+	      ;;
+	    esac
+	  fi # $linkmode,$pass = prog,link...
+
+	  if test "$alldeplibs" = yes &&
+	     { test "$deplibs_check_method" = pass_all ||
+	       { test "$build_libtool_libs" = yes &&
+		 test -n "$library_names"; }; }; then
+	    # We only need to search for static libraries
+	    continue
+	  fi
+	fi
+
+	link_static=no # Whether the deplib will be linked statically
+	use_static_libs=$prefer_static_libs
+	if test "$use_static_libs" = built && test "$installed" = yes; then
+	  use_static_libs=no
+	fi
+	if test -n "$library_names" &&
+	   { test "$use_static_libs" = no || test -z "$old_library"; }; then
+	  case $host in
+	  *cygwin* | *mingw* | *cegcc*)
+	      # No point in relinking DLLs because paths are not encoded
+	      func_append notinst_deplibs " $lib"
+	      need_relink=no
+	    ;;
+	  *)
+	    if test "$installed" = no; then
+	      func_append notinst_deplibs " $lib"
+	      need_relink=yes
+	    fi
+	    ;;
+	  esac
+	  # This is a shared library
+
+	  # Warn about portability, can't link against -module's on some
+	  # systems (darwin).  Don't bleat about dlopened modules though!
+	  dlopenmodule=""
+	  for dlpremoduletest in $dlprefiles; do
+	    if test "X$dlpremoduletest" = "X$lib"; then
+	      dlopenmodule="$dlpremoduletest"
+	      break
+	    fi
+	  done
+	  if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then
+	    echo
+	    if test "$linkmode" = prog; then
+	      $ECHO "*** Warning: Linking the executable $output against the loadable module"
+	    else
+	      $ECHO "*** Warning: Linking the shared library $output against the loadable module"
+	    fi
+	    $ECHO "*** $linklib is not portable!"
+	  fi
+	  if test "$linkmode" = lib &&
+	     test "$hardcode_into_libs" = yes; then
+	    # Hardcode the library path.
+	    # Skip directories that are in the system default run-time
+	    # search path.
+	    case " $sys_lib_dlsearch_path " in
+	    *" $absdir "*) ;;
+	    *)
+	      case "$compile_rpath " in
+	      *" $absdir "*) ;;
+	      *) func_append compile_rpath " $absdir" ;;
+	      esac
+	      ;;
+	    esac
+	    case " $sys_lib_dlsearch_path " in
+	    *" $libdir "*) ;;
+	    *)
+	      case "$finalize_rpath " in
+	      *" $libdir "*) ;;
+	      *) func_append finalize_rpath " $libdir" ;;
+	      esac
+	      ;;
+	    esac
+	  fi
+
+	  if test -n "$old_archive_from_expsyms_cmds"; then
+	    # figure out the soname
+	    set dummy $library_names
+	    shift
+	    realname="$1"
+	    shift
+	    libname=`eval "\\$ECHO \"$libname_spec\""`
+	    # use dlname if we got it. it's perfectly good, no?
+	    if test -n "$dlname"; then
+	      soname="$dlname"
+	    elif test -n "$soname_spec"; then
+	      # bleh windows
+	      case $host in
+	      *cygwin* | mingw* | *cegcc*)
+	        func_arith $current - $age
+		major=$func_arith_result
+		versuffix="-$major"
+		;;
+	      esac
+	      eval soname=\"$soname_spec\"
+	    else
+	      soname="$realname"
+	    fi
+
+	    # Make a new name for the extract_expsyms_cmds to use
+	    soroot="$soname"
+	    func_basename "$soroot"
+	    soname="$func_basename_result"
+	    func_stripname 'lib' '.dll' "$soname"
+	    newlib=libimp-$func_stripname_result.a
+
+	    # If the library has no export list, then create one now
+	    if test -f "$output_objdir/$soname-def"; then :
+	    else
+	      func_verbose "extracting exported symbol list from \`$soname'"
+	      func_execute_cmds "$extract_expsyms_cmds" 'exit $?'
+	    fi
+
+	    # Create $newlib
+	    if test -f "$output_objdir/$newlib"; then :; else
+	      func_verbose "generating import library for \`$soname'"
+	      func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?'
+	    fi
+	    # make sure the library variables are pointing to the new library
+	    dir=$output_objdir
+	    linklib=$newlib
+	  fi # test -n "$old_archive_from_expsyms_cmds"
+
+	  if test "$linkmode" = prog || test "$opt_mode" != relink; then
+	    add_shlibpath=
+	    add_dir=
+	    add=
+	    lib_linked=yes
+	    case $hardcode_action in
+	    immediate | unsupported)
+	      if test "$hardcode_direct" = no; then
+		add="$dir/$linklib"
+		case $host in
+		  *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;;
+		  *-*-sysv4*uw2*) add_dir="-L$dir" ;;
+		  *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \
+		    *-*-unixware7*) add_dir="-L$dir" ;;
+		  *-*-darwin* )
+		    # if the lib is a (non-dlopened) module then we can not
+		    # link against it, someone is ignoring the earlier warnings
+		    if /usr/bin/file -L $add 2> /dev/null |
+			 $GREP ": [^:]* bundle" >/dev/null ; then
+		      if test "X$dlopenmodule" != "X$lib"; then
+			$ECHO "*** Warning: lib $linklib is a module, not a shared library"
+			if test -z "$old_library" ; then
+			  echo
+			  echo "*** And there doesn't seem to be a static archive available"
+			  echo "*** The link will probably fail, sorry"
+			else
+			  add="$dir/$old_library"
+			fi
+		      elif test -n "$old_library"; then
+			add="$dir/$old_library"
+		      fi
+		    fi
+		esac
+	      elif test "$hardcode_minus_L" = no; then
+		case $host in
+		*-*-sunos*) add_shlibpath="$dir" ;;
+		esac
+		add_dir="-L$dir"
+		add="-l$name"
+	      elif test "$hardcode_shlibpath_var" = no; then
+		add_shlibpath="$dir"
+		add="-l$name"
+	      else
+		lib_linked=no
+	      fi
+	      ;;
+	    relink)
+	      if test "$hardcode_direct" = yes &&
+	         test "$hardcode_direct_absolute" = no; then
+		add="$dir/$linklib"
+	      elif test "$hardcode_minus_L" = yes; then
+		add_dir="-L$absdir"
+		# Try looking first in the location we're being installed to.
+		if test -n "$inst_prefix_dir"; then
+		  case $libdir in
+		    [\\/]*)
+		      func_append add_dir " -L$inst_prefix_dir$libdir"
+		      ;;
+		  esac
+		fi
+		add="-l$name"
+	      elif test "$hardcode_shlibpath_var" = yes; then
+		add_shlibpath="$dir"
+		add="-l$name"
+	      else
+		lib_linked=no
+	      fi
+	      ;;
+	    *) lib_linked=no ;;
+	    esac
+
+	    if test "$lib_linked" != yes; then
+	      func_fatal_configuration "unsupported hardcode properties"
+	    fi
+
+	    if test -n "$add_shlibpath"; then
+	      case :$compile_shlibpath: in
+	      *":$add_shlibpath:"*) ;;
+	      *) func_append compile_shlibpath "$add_shlibpath:" ;;
+	      esac
+	    fi
+	    if test "$linkmode" = prog; then
+	      test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
+	      test -n "$add" && compile_deplibs="$add $compile_deplibs"
+	    else
+	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
+	      test -n "$add" && deplibs="$add $deplibs"
+	      if test "$hardcode_direct" != yes &&
+		 test "$hardcode_minus_L" != yes &&
+		 test "$hardcode_shlibpath_var" = yes; then
+		case :$finalize_shlibpath: in
+		*":$libdir:"*) ;;
+		*) func_append finalize_shlibpath "$libdir:" ;;
+		esac
+	      fi
+	    fi
+	  fi
+
+	  if test "$linkmode" = prog || test "$opt_mode" = relink; then
+	    add_shlibpath=
+	    add_dir=
+	    add=
+	    # Finalize command for both is simple: just hardcode it.
+	    if test "$hardcode_direct" = yes &&
+	       test "$hardcode_direct_absolute" = no; then
+	      add="$libdir/$linklib"
+	    elif test "$hardcode_minus_L" = yes; then
+	      add_dir="-L$libdir"
+	      add="-l$name"
+	    elif test "$hardcode_shlibpath_var" = yes; then
+	      case :$finalize_shlibpath: in
+	      *":$libdir:"*) ;;
+	      *) func_append finalize_shlibpath "$libdir:" ;;
+	      esac
+	      add="-l$name"
+	    elif test "$hardcode_automatic" = yes; then
+	      if test -n "$inst_prefix_dir" &&
+		 test -f "$inst_prefix_dir$libdir/$linklib" ; then
+		add="$inst_prefix_dir$libdir/$linklib"
+	      else
+		add="$libdir/$linklib"
+	      fi
+	    else
+	      # We cannot seem to hardcode it, guess we'll fake it.
+	      add_dir="-L$libdir"
+	      # Try looking first in the location we're being installed to.
+	      if test -n "$inst_prefix_dir"; then
+		case $libdir in
+		  [\\/]*)
+		    func_append add_dir " -L$inst_prefix_dir$libdir"
+		    ;;
+		esac
+	      fi
+	      add="-l$name"
+	    fi
+
+	    if test "$linkmode" = prog; then
+	      test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
+	      test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
+	    else
+	      test -n "$add_dir" && deplibs="$add_dir $deplibs"
+	      test -n "$add" && deplibs="$add $deplibs"
+	    fi
+	  fi
+	elif test "$linkmode" = prog; then
+	  # Here we assume that one of hardcode_direct or hardcode_minus_L
+	  # is not unsupported.  This is valid on all known static and
+	  # shared platforms.
+	  if test "$hardcode_direct" != unsupported; then
+	    test -n "$old_library" && linklib="$old_library"
+	    compile_deplibs="$dir/$linklib $compile_deplibs"
+	    finalize_deplibs="$dir/$linklib $finalize_deplibs"
+	  else
+	    compile_deplibs="-l$name -L$dir $compile_deplibs"
+	    finalize_deplibs="-l$name -L$dir $finalize_deplibs"
+	  fi
+	elif test "$build_libtool_libs" = yes; then
+	  # Not a shared library
+	  if test "$deplibs_check_method" != pass_all; then
+	    # We're trying link a shared library against a static one
+	    # but the system doesn't support it.
+
+	    # Just print a warning and add the library to dependency_libs so
+	    # that the program can be linked against the static library.
+	    echo
+	    $ECHO "*** Warning: This system can not link to static lib archive $lib."
+	    echo "*** I have the capability to make that library automatically link in when"
+	    echo "*** you link to this library.  But I can only do this if you have a"
+	    echo "*** shared version of the library, which you do not appear to have."
+	    if test "$module" = yes; then
+	      echo "*** But as you try to build a module library, libtool will still create "
+	      echo "*** a static module, that should work as long as the dlopening application"
+	      echo "*** is linked with the -dlopen flag to resolve symbols at runtime."
+	      if test -z "$global_symbol_pipe"; then
+		echo
+		echo "*** However, this would only work if libtool was able to extract symbol"
+		echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
+		echo "*** not find such a program.  So, this module is probably useless."
+		echo "*** \`nm' from GNU binutils and a full rebuild may help."
+	      fi
+	      if test "$build_old_libs" = no; then
+		build_libtool_libs=module
+		build_old_libs=yes
+	      else
+		build_libtool_libs=no
+	      fi
+	    fi
+	  else
+	    deplibs="$dir/$old_library $deplibs"
+	    link_static=yes
+	  fi
+	fi # link shared/static library?
+
+	if test "$linkmode" = lib; then
+	  if test -n "$dependency_libs" &&
+	     { test "$hardcode_into_libs" != yes ||
+	       test "$build_old_libs" = yes ||
+	       test "$link_static" = yes; }; then
+	    # Extract -R from dependency_libs
+	    temp_deplibs=
+	    for libdir in $dependency_libs; do
+	      case $libdir in
+	      -R*) func_stripname '-R' '' "$libdir"
+	           temp_xrpath=$func_stripname_result
+		   case " $xrpath " in
+		   *" $temp_xrpath "*) ;;
+		   *) func_append xrpath " $temp_xrpath";;
+		   esac;;
+	      *) func_append temp_deplibs " $libdir";;
+	      esac
+	    done
+	    dependency_libs="$temp_deplibs"
+	  fi
+
+	  func_append newlib_search_path " $absdir"
+	  # Link against this library
+	  test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
+	  # ... and its dependency_libs
+	  tmp_libs=
+	  for deplib in $dependency_libs; do
+	    newdependency_libs="$deplib $newdependency_libs"
+	    case $deplib in
+              -L*) func_stripname '-L' '' "$deplib"
+                   func_resolve_sysroot "$func_stripname_result";;
+              *) func_resolve_sysroot "$deplib" ;;
+            esac
+	    if $opt_preserve_dup_deps ; then
+	      case "$tmp_libs " in
+	      *" $func_resolve_sysroot_result "*)
+                func_append specialdeplibs " $func_resolve_sysroot_result" ;;
+	      esac
+	    fi
+	    func_append tmp_libs " $func_resolve_sysroot_result"
+	  done
+
+	  if test "$link_all_deplibs" != no; then
+	    # Add the search paths of all dependency libraries
+	    for deplib in $dependency_libs; do
+	      path=
+	      case $deplib in
+	      -L*) path="$deplib" ;;
+	      *.la)
+	        func_resolve_sysroot "$deplib"
+	        deplib=$func_resolve_sysroot_result
+	        func_dirname "$deplib" "" "."
+		dir=$func_dirname_result
+		# We need an absolute path.
+		case $dir in
+		[\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
+		*)
+		  absdir=`cd "$dir" && pwd`
+		  if test -z "$absdir"; then
+		    func_warning "cannot determine absolute directory name of \`$dir'"
+		    absdir="$dir"
+		  fi
+		  ;;
+		esac
+		if $GREP "^installed=no" $deplib > /dev/null; then
+		case $host in
+		*-*-darwin*)
+		  depdepl=
+		  eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib`
+		  if test -n "$deplibrary_names" ; then
+		    for tmp in $deplibrary_names ; do
+		      depdepl=$tmp
+		    done
+		    if test -f "$absdir/$objdir/$depdepl" ; then
+		      depdepl="$absdir/$objdir/$depdepl"
+		      darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
+                      if test -z "$darwin_install_name"; then
+                          darwin_install_name=`${OTOOL64} -L $depdepl  | awk '{if (NR == 2) {print $1;exit}}'`
+                      fi
+		      func_append compiler_flags " ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
+		      func_append linker_flags " -dylib_file ${darwin_install_name}:${depdepl}"
+		      path=
+		    fi
+		  fi
+		  ;;
+		*)
+		  path="-L$absdir/$objdir"
+		  ;;
+		esac
+		else
+		  eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+		  test -z "$libdir" && \
+		    func_fatal_error "\`$deplib' is not a valid libtool archive"
+		  test "$absdir" != "$libdir" && \
+		    func_warning "\`$deplib' seems to be moved"
+
+		  path="-L$absdir"
+		fi
+		;;
+	      esac
+	      case " $deplibs " in
+	      *" $path "*) ;;
+	      *) deplibs="$path $deplibs" ;;
+	      esac
+	    done
+	  fi # link_all_deplibs != no
+	fi # linkmode = lib
+      done # for deplib in $libs
+      if test "$pass" = link; then
+	if test "$linkmode" = "prog"; then
+	  compile_deplibs="$new_inherited_linker_flags $compile_deplibs"
+	  finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs"
+	else
+	  compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	fi
+      fi
+      dependency_libs="$newdependency_libs"
+      if test "$pass" = dlpreopen; then
+	# Link the dlpreopened libraries before other libraries
+	for deplib in $save_deplibs; do
+	  deplibs="$deplib $deplibs"
+	done
+      fi
+      if test "$pass" != dlopen; then
+	if test "$pass" != conv; then
+	  # Make sure lib_search_path contains only unique directories.
+	  lib_search_path=
+	  for dir in $newlib_search_path; do
+	    case "$lib_search_path " in
+	    *" $dir "*) ;;
+	    *) func_append lib_search_path " $dir" ;;
+	    esac
+	  done
+	  newlib_search_path=
+	fi
+
+	if test "$linkmode,$pass" != "prog,link"; then
+	  vars="deplibs"
+	else
+	  vars="compile_deplibs finalize_deplibs"
+	fi
+	for var in $vars dependency_libs; do
+	  # Add libraries to $var in reverse order
+	  eval tmp_libs=\"\$$var\"
+	  new_libs=
+	  for deplib in $tmp_libs; do
+	    # FIXME: Pedantically, this is the right thing to do, so
+	    #        that some nasty dependency loop isn't accidentally
+	    #        broken:
+	    #new_libs="$deplib $new_libs"
+	    # Pragmatically, this seems to cause very few problems in
+	    # practice:
+	    case $deplib in
+	    -L*) new_libs="$deplib $new_libs" ;;
+	    -R*) ;;
+	    *)
+	      # And here is the reason: when a library appears more
+	      # than once as an explicit dependence of a library, or
+	      # is implicitly linked in more than once by the
+	      # compiler, it is considered special, and multiple
+	      # occurrences thereof are not removed.  Compare this
+	      # with having the same library being listed as a
+	      # dependency of multiple other libraries: in this case,
+	      # we know (pedantically, we assume) the library does not
+	      # need to be listed more than once, so we keep only the
+	      # last copy.  This is not always right, but it is rare
+	      # enough that we require users that really mean to play
+	      # such unportable linking tricks to link the library
+	      # using -Wl,-lname, so that libtool does not consider it
+	      # for duplicate removal.
+	      case " $specialdeplibs " in
+	      *" $deplib "*) new_libs="$deplib $new_libs" ;;
+	      *)
+		case " $new_libs " in
+		*" $deplib "*) ;;
+		*) new_libs="$deplib $new_libs" ;;
+		esac
+		;;
+	      esac
+	      ;;
+	    esac
+	  done
+	  tmp_libs=
+	  for deplib in $new_libs; do
+	    case $deplib in
+	    -L*)
+	      case " $tmp_libs " in
+	      *" $deplib "*) ;;
+	      *) func_append tmp_libs " $deplib" ;;
+	      esac
+	      ;;
+	    *) func_append tmp_libs " $deplib" ;;
+	    esac
+	  done
+	  eval $var=\"$tmp_libs\"
+	done # for var
+      fi
+      # Last step: remove runtime libs from dependency_libs
+      # (they stay in deplibs)
+      tmp_libs=
+      for i in $dependency_libs ; do
+	case " $predeps $postdeps $compiler_lib_search_path " in
+	*" $i "*)
+	  i=""
+	  ;;
+	esac
+	if test -n "$i" ; then
+	  func_append tmp_libs " $i"
+	fi
+      done
+      dependency_libs=$tmp_libs
+    done # for pass
+    if test "$linkmode" = prog; then
+      dlfiles="$newdlfiles"
+    fi
+    if test "$linkmode" = prog || test "$linkmode" = lib; then
+      dlprefiles="$newdlprefiles"
+    fi
+
+    case $linkmode in
+    oldlib)
+      if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+	func_warning "\`-dlopen' is ignored for archives"
+      fi
+
+      case " $deplibs" in
+      *\ -l* | *\ -L*)
+	func_warning "\`-l' and \`-L' are ignored for archives" ;;
+      esac
+
+      test -n "$rpath" && \
+	func_warning "\`-rpath' is ignored for archives"
+
+      test -n "$xrpath" && \
+	func_warning "\`-R' is ignored for archives"
+
+      test -n "$vinfo" && \
+	func_warning "\`-version-info/-version-number' is ignored for archives"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for archives"
+
+      test -n "$export_symbols$export_symbols_regex" && \
+	func_warning "\`-export-symbols' is ignored for archives"
+
+      # Now set the variables for building old libraries.
+      build_libtool_libs=no
+      oldlibs="$output"
+      func_append objs "$old_deplibs"
+      ;;
+
+    lib)
+      # Make sure we only generate libraries of the form `libNAME.la'.
+      case $outputname in
+      lib*)
+	func_stripname 'lib' '.la' "$outputname"
+	name=$func_stripname_result
+	eval shared_ext=\"$shrext_cmds\"
+	eval libname=\"$libname_spec\"
+	;;
+      *)
+	test "$module" = no && \
+	  func_fatal_help "libtool library \`$output' must begin with \`lib'"
+
+	if test "$need_lib_prefix" != no; then
+	  # Add the "lib" prefix for modules if required
+	  func_stripname '' '.la' "$outputname"
+	  name=$func_stripname_result
+	  eval shared_ext=\"$shrext_cmds\"
+	  eval libname=\"$libname_spec\"
+	else
+	  func_stripname '' '.la' "$outputname"
+	  libname=$func_stripname_result
+	fi
+	;;
+      esac
+
+      if test -n "$objs"; then
+	if test "$deplibs_check_method" != pass_all; then
+	  func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs"
+	else
+	  echo
+	  $ECHO "*** Warning: Linking the shared library $output against the non-libtool"
+	  $ECHO "*** objects $objs is not portable!"
+	  func_append libobjs " $objs"
+	fi
+      fi
+
+      test "$dlself" != no && \
+	func_warning "\`-dlopen self' is ignored for libtool libraries"
+
+      set dummy $rpath
+      shift
+      test "$#" -gt 1 && \
+	func_warning "ignoring multiple \`-rpath's for a libtool library"
+
+      install_libdir="$1"
+
+      oldlibs=
+      if test -z "$rpath"; then
+	if test "$build_libtool_libs" = yes; then
+	  # Building a libtool convenience library.
+	  # Some compilers have problems with a `.al' extension so
+	  # convenience libraries should have the same extension an
+	  # archive normally would.
+	  oldlibs="$output_objdir/$libname.$libext $oldlibs"
+	  build_libtool_libs=convenience
+	  build_old_libs=yes
+	fi
+
+	test -n "$vinfo" && \
+	  func_warning "\`-version-info/-version-number' is ignored for convenience libraries"
+
+	test -n "$release" && \
+	  func_warning "\`-release' is ignored for convenience libraries"
+      else
+
+	# Parse the version information argument.
+	save_ifs="$IFS"; IFS=':'
+	set dummy $vinfo 0 0 0
+	shift
+	IFS="$save_ifs"
+
+	test -n "$7" && \
+	  func_fatal_help "too many parameters to \`-version-info'"
+
+	# convert absolute version numbers to libtool ages
+	# this retains compatibility with .la files and attempts
+	# to make the code below a bit more comprehensible
+
+	case $vinfo_number in
+	yes)
+	  number_major="$1"
+	  number_minor="$2"
+	  number_revision="$3"
+	  #
+	  # There are really only two kinds -- those that
+	  # use the current revision as the major version
+	  # and those that subtract age and use age as
+	  # a minor version.  But, then there is irix
+	  # which has an extra 1 added just for fun
+	  #
+	  case $version_type in
+	  # correct linux to gnu/linux during the next big refactor
+	  darwin|linux|osf|windows|none)
+	    func_arith $number_major + $number_minor
+	    current=$func_arith_result
+	    age="$number_minor"
+	    revision="$number_revision"
+	    ;;
+	  freebsd-aout|freebsd-elf|qnx|sunos)
+	    current="$number_major"
+	    revision="$number_minor"
+	    age="0"
+	    ;;
+	  irix|nonstopux)
+	    func_arith $number_major + $number_minor
+	    current=$func_arith_result
+	    age="$number_minor"
+	    revision="$number_minor"
+	    lt_irix_increment=no
+	    ;;
+	  *)
+	    func_fatal_configuration "$modename: unknown library version type \`$version_type'"
+	    ;;
+	  esac
+	  ;;
+	no)
+	  current="$1"
+	  revision="$2"
+	  age="$3"
+	  ;;
+	esac
+
+	# Check that each of the things are valid numbers.
+	case $current in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "CURRENT \`$current' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	case $revision in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "REVISION \`$revision' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	case $age in
+	0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
+	*)
+	  func_error "AGE \`$age' must be a nonnegative integer"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	  ;;
+	esac
+
+	if test "$age" -gt "$current"; then
+	  func_error "AGE \`$age' is greater than the current interface number \`$current'"
+	  func_fatal_error "\`$vinfo' is not valid version information"
+	fi
+
+	# Calculate the version variables.
+	major=
+	versuffix=
+	verstring=
+	case $version_type in
+	none) ;;
+
+	darwin)
+	  # Like Linux, but with the current version available in
+	  # verstring for coding it into the library header
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix="$major.$age.$revision"
+	  # Darwin ld doesn't like 0 for these options...
+	  func_arith $current + 1
+	  minor_current=$func_arith_result
+	  xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision"
+	  verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
+	  ;;
+
+	freebsd-aout)
+	  major=".$current"
+	  versuffix=".$current.$revision";
+	  ;;
+
+	freebsd-elf)
+	  major=".$current"
+	  versuffix=".$current"
+	  ;;
+
+	irix | nonstopux)
+	  if test "X$lt_irix_increment" = "Xno"; then
+	    func_arith $current - $age
+	  else
+	    func_arith $current - $age + 1
+	  fi
+	  major=$func_arith_result
+
+	  case $version_type in
+	    nonstopux) verstring_prefix=nonstopux ;;
+	    *)         verstring_prefix=sgi ;;
+	  esac
+	  verstring="$verstring_prefix$major.$revision"
+
+	  # Add in all the interfaces that we are compatible with.
+	  loop=$revision
+	  while test "$loop" -ne 0; do
+	    func_arith $revision - $loop
+	    iface=$func_arith_result
+	    func_arith $loop - 1
+	    loop=$func_arith_result
+	    verstring="$verstring_prefix$major.$iface:$verstring"
+	  done
+
+	  # Before this point, $major must not contain `.'.
+	  major=.$major
+	  versuffix="$major.$revision"
+	  ;;
+
+	linux) # correct to gnu/linux during the next big refactor
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix="$major.$age.$revision"
+	  ;;
+
+	osf)
+	  func_arith $current - $age
+	  major=.$func_arith_result
+	  versuffix=".$current.$age.$revision"
+	  verstring="$current.$age.$revision"
+
+	  # Add in all the interfaces that we are compatible with.
+	  loop=$age
+	  while test "$loop" -ne 0; do
+	    func_arith $current - $loop
+	    iface=$func_arith_result
+	    func_arith $loop - 1
+	    loop=$func_arith_result
+	    verstring="$verstring:${iface}.0"
+	  done
+
+	  # Make executables depend on our current version.
+	  func_append verstring ":${current}.0"
+	  ;;
+
+	qnx)
+	  major=".$current"
+	  versuffix=".$current"
+	  ;;
+
+	sunos)
+	  major=".$current"
+	  versuffix=".$current.$revision"
+	  ;;
+
+	windows)
+	  # Use '-' rather than '.', since we only want one
+	  # extension on DOS 8.3 filesystems.
+	  func_arith $current - $age
+	  major=$func_arith_result
+	  versuffix="-$major"
+	  ;;
+
+	*)
+	  func_fatal_configuration "unknown library version type \`$version_type'"
+	  ;;
+	esac
+
+	# Clear the version info if we defaulted, and they specified a release.
+	if test -z "$vinfo" && test -n "$release"; then
+	  major=
+	  case $version_type in
+	  darwin)
+	    # we can't check for "0.0" in archive_cmds due to quoting
+	    # problems, so we reset it completely
+	    verstring=
+	    ;;
+	  *)
+	    verstring="0.0"
+	    ;;
+	  esac
+	  if test "$need_version" = no; then
+	    versuffix=
+	  else
+	    versuffix=".0.0"
+	  fi
+	fi
+
+	# Remove version info from name if versioning should be avoided
+	if test "$avoid_version" = yes && test "$need_version" = no; then
+	  major=
+	  versuffix=
+	  verstring=""
+	fi
+
+	# Check to see if the archive will have undefined symbols.
+	if test "$allow_undefined" = yes; then
+	  if test "$allow_undefined_flag" = unsupported; then
+	    func_warning "undefined symbols not allowed in $host shared libraries"
+	    build_libtool_libs=no
+	    build_old_libs=yes
+	  fi
+	else
+	  # Don't allow undefined symbols.
+	  allow_undefined_flag="$no_undefined_flag"
+	fi
+
+      fi
+
+      func_generate_dlsyms "$libname" "$libname" "yes"
+      func_append libobjs " $symfileobj"
+      test "X$libobjs" = "X " && libobjs=
+
+      if test "$opt_mode" != relink; then
+	# Remove our outputs, but don't remove object files since they
+	# may have been created when compiling PIC objects.
+	removelist=
+	tempremovelist=`$ECHO "$output_objdir/*"`
+	for p in $tempremovelist; do
+	  case $p in
+	    *.$objext | *.gcno)
+	       ;;
+	    $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*)
+	       if test "X$precious_files_regex" != "X"; then
+		 if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1
+		 then
+		   continue
+		 fi
+	       fi
+	       func_append removelist " $p"
+	       ;;
+	    *) ;;
+	  esac
+	done
+	test -n "$removelist" && \
+	  func_show_eval "${RM}r \$removelist"
+      fi
+
+      # Now set the variables for building old libraries.
+      if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
+	func_append oldlibs " $output_objdir/$libname.$libext"
+
+	# Transform .lo files to .o files.
+	oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP`
+      fi
+
+      # Eliminate all temporary directories.
+      #for path in $notinst_path; do
+      #	lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"`
+      #	deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"`
+      #	dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"`
+      #done
+
+      if test -n "$xrpath"; then
+	# If the user specified any rpath flags, then add them.
+	temp_xrpath=
+	for libdir in $xrpath; do
+	  func_replace_sysroot "$libdir"
+	  func_append temp_xrpath " -R$func_replace_sysroot_result"
+	  case "$finalize_rpath " in
+	  *" $libdir "*) ;;
+	  *) func_append finalize_rpath " $libdir" ;;
+	  esac
+	done
+	if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
+	  dependency_libs="$temp_xrpath $dependency_libs"
+	fi
+      fi
+
+      # Make sure dlfiles contains only unique files that won't be dlpreopened
+      old_dlfiles="$dlfiles"
+      dlfiles=
+      for lib in $old_dlfiles; do
+	case " $dlprefiles $dlfiles " in
+	*" $lib "*) ;;
+	*) func_append dlfiles " $lib" ;;
+	esac
+      done
+
+      # Make sure dlprefiles contains only unique files
+      old_dlprefiles="$dlprefiles"
+      dlprefiles=
+      for lib in $old_dlprefiles; do
+	case "$dlprefiles " in
+	*" $lib "*) ;;
+	*) func_append dlprefiles " $lib" ;;
+	esac
+      done
+
+      if test "$build_libtool_libs" = yes; then
+	if test -n "$rpath"; then
+	  case $host in
+	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	    # these systems don't actually have a c library (as such)!
+	    ;;
+	  *-*-rhapsody* | *-*-darwin1.[012])
+	    # Rhapsody C library is in the System framework
+	    func_append deplibs " System.ltframework"
+	    ;;
+	  *-*-netbsd*)
+	    # Don't link with libc until the a.out ld.so is fixed.
+	    ;;
+	  *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
+	    # Do not include libc due to us having libc/libc_r.
+	    ;;
+	  *-*-sco3.2v5* | *-*-sco5v6*)
+	    # Causes problems with __ctype
+	    ;;
+	  *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
+	    # Compiler inserts libc in the correct place for threads to work
+	    ;;
+	  *)
+	    # Add libc to deplibs on all other systems if necessary.
+	    if test "$build_libtool_need_lc" = "yes"; then
+	      func_append deplibs " -lc"
+	    fi
+	    ;;
+	  esac
+	fi
+
+	# Transform deplibs into only deplibs that can be linked in shared.
+	name_save=$name
+	libname_save=$libname
+	release_save=$release
+	versuffix_save=$versuffix
+	major_save=$major
+	# I'm not sure if I'm treating the release correctly.  I think
+	# release should show up in the -l (ie -lgmp5) so we don't want to
+	# add it in twice.  Is that correct?
+	release=""
+	versuffix=""
+	major=""
+	newdeplibs=
+	droppeddeps=no
+	case $deplibs_check_method in
+	pass_all)
+	  # Don't check for shared/static.  Everything works.
+	  # This might be a little naive.  We might want to check
+	  # whether the library exists or not.  But this is on
+	  # osf3 & osf4 and I'm not really sure... Just
+	  # implementing what was already the behavior.
+	  newdeplibs=$deplibs
+	  ;;
+	test_compile)
+	  # This code stresses the "libraries are programs" paradigm to its
+	  # limits. Maybe even breaks it.  We compile a program, linking it
+	  # against the deplibs as a proxy for the library.  Then we can check
+	  # whether they linked in statically or dynamically with ldd.
+	  $opt_dry_run || $RM conftest.c
+	  cat > conftest.c </dev/null`
+		    $nocaseglob
+		  else
+		    potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null`
+		  fi
+		  for potent_lib in $potential_libs; do
+		      # Follow soft links.
+		      if ls -lLd "$potent_lib" 2>/dev/null |
+			 $GREP " -> " >/dev/null; then
+			continue
+		      fi
+		      # The statement above tries to avoid entering an
+		      # endless loop below, in case of cyclic links.
+		      # We might still enter an endless loop, since a link
+		      # loop can be closed while we follow links,
+		      # but so what?
+		      potlib="$potent_lib"
+		      while test -h "$potlib" 2>/dev/null; do
+			potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'`
+			case $potliblink in
+			[\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";;
+			*) potlib=`$ECHO "$potlib" | $SED 's,[^/]*$,,'`"$potliblink";;
+			esac
+		      done
+		      if eval $file_magic_cmd \"\$potlib\" 2>/dev/null |
+			 $SED -e 10q |
+			 $EGREP "$file_magic_regex" > /dev/null; then
+			func_append newdeplibs " $a_deplib"
+			a_deplib=""
+			break 2
+		      fi
+		  done
+		done
+	      fi
+	      if test -n "$a_deplib" ; then
+		droppeddeps=yes
+		echo
+		$ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because I did check the linker path looking for a file starting"
+		if test -z "$potlib" ; then
+		  $ECHO "*** with $libname but no candidates were found. (...for file magic test)"
+		else
+		  $ECHO "*** with $libname and none of the candidates passed a file format test"
+		  $ECHO "*** using a file magic. Last file checked: $potlib"
+		fi
+	      fi
+	      ;;
+	    *)
+	      # Add a -L argument.
+	      func_append newdeplibs " $a_deplib"
+	      ;;
+	    esac
+	  done # Gone through all deplibs.
+	  ;;
+	match_pattern*)
+	  set dummy $deplibs_check_method; shift
+	  match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
+	  for a_deplib in $deplibs; do
+	    case $a_deplib in
+	    -l*)
+	      func_stripname -l '' "$a_deplib"
+	      name=$func_stripname_result
+	      if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+		case " $predeps $postdeps " in
+		*" $a_deplib "*)
+		  func_append newdeplibs " $a_deplib"
+		  a_deplib=""
+		  ;;
+		esac
+	      fi
+	      if test -n "$a_deplib" ; then
+		libname=`eval "\\$ECHO \"$libname_spec\""`
+		for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
+		  potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
+		  for potent_lib in $potential_libs; do
+		    potlib="$potent_lib" # see symlink-check above in file_magic test
+		    if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \
+		       $EGREP "$match_pattern_regex" > /dev/null; then
+		      func_append newdeplibs " $a_deplib"
+		      a_deplib=""
+		      break 2
+		    fi
+		  done
+		done
+	      fi
+	      if test -n "$a_deplib" ; then
+		droppeddeps=yes
+		echo
+		$ECHO "*** Warning: linker path does not have real file for library $a_deplib."
+		echo "*** I have the capability to make that library automatically link in when"
+		echo "*** you link to this library.  But I can only do this if you have a"
+		echo "*** shared version of the library, which you do not appear to have"
+		echo "*** because I did check the linker path looking for a file starting"
+		if test -z "$potlib" ; then
+		  $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)"
+		else
+		  $ECHO "*** with $libname and none of the candidates passed a file format test"
+		  $ECHO "*** using a regex pattern. Last file checked: $potlib"
+		fi
+	      fi
+	      ;;
+	    *)
+	      # Add a -L argument.
+	      func_append newdeplibs " $a_deplib"
+	      ;;
+	    esac
+	  done # Gone through all deplibs.
+	  ;;
+	none | unknown | *)
+	  newdeplibs=""
+	  tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'`
+	  if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
+	    for i in $predeps $postdeps ; do
+	      # can't use Xsed below, because $i might contain '/'
+	      tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s,$i,,"`
+	    done
+	  fi
+	  case $tmp_deplibs in
+	  *[!\	\ ]*)
+	    echo
+	    if test "X$deplibs_check_method" = "Xnone"; then
+	      echo "*** Warning: inter-library dependencies are not supported in this platform."
+	    else
+	      echo "*** Warning: inter-library dependencies are not known to be supported."
+	    fi
+	    echo "*** All declared inter-library dependencies are being dropped."
+	    droppeddeps=yes
+	    ;;
+	  esac
+	  ;;
+	esac
+	versuffix=$versuffix_save
+	major=$major_save
+	release=$release_save
+	libname=$libname_save
+	name=$name_save
+
+	case $host in
+	*-*-rhapsody* | *-*-darwin1.[012])
+	  # On Rhapsody replace the C library with the System framework
+	  newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'`
+	  ;;
+	esac
+
+	if test "$droppeddeps" = yes; then
+	  if test "$module" = yes; then
+	    echo
+	    echo "*** Warning: libtool could not satisfy all declared inter-library"
+	    $ECHO "*** dependencies of module $libname.  Therefore, libtool will create"
+	    echo "*** a static module, that should work as long as the dlopening"
+	    echo "*** application is linked with the -dlopen flag."
+	    if test -z "$global_symbol_pipe"; then
+	      echo
+	      echo "*** However, this would only work if libtool was able to extract symbol"
+	      echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
+	      echo "*** not find such a program.  So, this module is probably useless."
+	      echo "*** \`nm' from GNU binutils and a full rebuild may help."
+	    fi
+	    if test "$build_old_libs" = no; then
+	      oldlibs="$output_objdir/$libname.$libext"
+	      build_libtool_libs=module
+	      build_old_libs=yes
+	    else
+	      build_libtool_libs=no
+	    fi
+	  else
+	    echo "*** The inter-library dependencies that have been dropped here will be"
+	    echo "*** automatically added whenever a program is linked with this library"
+	    echo "*** or is declared to -dlopen it."
+
+	    if test "$allow_undefined" = no; then
+	      echo
+	      echo "*** Since this library must not contain undefined symbols,"
+	      echo "*** because either the platform does not support them or"
+	      echo "*** it was explicitly requested with -no-undefined,"
+	      echo "*** libtool will only create a static version of it."
+	      if test "$build_old_libs" = no; then
+		oldlibs="$output_objdir/$libname.$libext"
+		build_libtool_libs=module
+		build_old_libs=yes
+	      else
+		build_libtool_libs=no
+	      fi
+	    fi
+	  fi
+	fi
+	# Done checking deplibs!
+	deplibs=$newdeplibs
+      fi
+      # Time to change all our "foo.ltframework" stuff back to "-framework foo"
+      case $host in
+	*-*-darwin*)
+	  newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	  ;;
+      esac
+
+      # move library search paths that coincide with paths to not yet
+      # installed libraries to the beginning of the library search list
+      new_libs=
+      for path in $notinst_path; do
+	case " $new_libs " in
+	*" -L$path/$objdir "*) ;;
+	*)
+	  case " $deplibs " in
+	  *" -L$path/$objdir "*)
+	    func_append new_libs " -L$path/$objdir" ;;
+	  esac
+	  ;;
+	esac
+      done
+      for deplib in $deplibs; do
+	case $deplib in
+	-L*)
+	  case " $new_libs " in
+	  *" $deplib "*) ;;
+	  *) func_append new_libs " $deplib" ;;
+	  esac
+	  ;;
+	*) func_append new_libs " $deplib" ;;
+	esac
+      done
+      deplibs="$new_libs"
+
+      # All the library-specific variables (install_libdir is set above).
+      library_names=
+      old_library=
+      dlname=
+
+      # Test again, we may have decided not to build it any more
+      if test "$build_libtool_libs" = yes; then
+	# Remove ${wl} instances when linking with ld.
+	# FIXME: should test the right _cmds variable.
+	case $archive_cmds in
+	  *\$LD\ *) wl= ;;
+        esac
+	if test "$hardcode_into_libs" = yes; then
+	  # Hardcode the library paths
+	  hardcode_libdirs=
+	  dep_rpath=
+	  rpath="$finalize_rpath"
+	  test "$opt_mode" != relink && rpath="$compile_rpath$rpath"
+	  for libdir in $rpath; do
+	    if test -n "$hardcode_libdir_flag_spec"; then
+	      if test -n "$hardcode_libdir_separator"; then
+		func_replace_sysroot "$libdir"
+		libdir=$func_replace_sysroot_result
+		if test -z "$hardcode_libdirs"; then
+		  hardcode_libdirs="$libdir"
+		else
+		  # Just accumulate the unique libdirs.
+		  case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+		  *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		    ;;
+		  *)
+		    func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
+		    ;;
+		  esac
+		fi
+	      else
+		eval flag=\"$hardcode_libdir_flag_spec\"
+		func_append dep_rpath " $flag"
+	      fi
+	    elif test -n "$runpath_var"; then
+	      case "$perm_rpath " in
+	      *" $libdir "*) ;;
+	      *) func_append perm_rpath " $libdir" ;;
+	      esac
+	    fi
+	  done
+	  # Substitute the hardcoded libdirs into the rpath.
+	  if test -n "$hardcode_libdir_separator" &&
+	     test -n "$hardcode_libdirs"; then
+	    libdir="$hardcode_libdirs"
+	    eval "dep_rpath=\"$hardcode_libdir_flag_spec\""
+	  fi
+	  if test -n "$runpath_var" && test -n "$perm_rpath"; then
+	    # We should set the runpath_var.
+	    rpath=
+	    for dir in $perm_rpath; do
+	      func_append rpath "$dir:"
+	    done
+	    eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var"
+	  fi
+	  test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs"
+	fi
+
+	shlibpath="$finalize_shlibpath"
+	test "$opt_mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
+	if test -n "$shlibpath"; then
+	  eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var"
+	fi
+
+	# Get the real and link names of the library.
+	eval shared_ext=\"$shrext_cmds\"
+	eval library_names=\"$library_names_spec\"
+	set dummy $library_names
+	shift
+	realname="$1"
+	shift
+
+	if test -n "$soname_spec"; then
+	  eval soname=\"$soname_spec\"
+	else
+	  soname="$realname"
+	fi
+	if test -z "$dlname"; then
+	  dlname=$soname
+	fi
+
+	lib="$output_objdir/$realname"
+	linknames=
+	for link
+	do
+	  func_append linknames " $link"
+	done
+
+	# Use standard objects if they are pic
+	test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	test "X$libobjs" = "X " && libobjs=
+
+	delfiles=
+	if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	  $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
+	  export_symbols="$output_objdir/$libname.uexp"
+	  func_append delfiles " $export_symbols"
+	fi
+
+	orig_export_symbols=
+	case $host_os in
+	cygwin* | mingw* | cegcc*)
+	  if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
+	    # exporting using user supplied symfile
+	    if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
+	      # and it's NOT already a .def file. Must figure out
+	      # which of the given symbols are data symbols and tag
+	      # them as such. So, trigger use of export_symbols_cmds.
+	      # export_symbols gets reassigned inside the "prepare
+	      # the list of exported symbols" if statement, so the
+	      # include_expsyms logic still works.
+	      orig_export_symbols="$export_symbols"
+	      export_symbols=
+	      always_export_symbols=yes
+	    fi
+	  fi
+	  ;;
+	esac
+
+	# Prepare the list of exported symbols
+	if test -z "$export_symbols"; then
+	  if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then
+	    func_verbose "generating symbol list for \`$libname.la'"
+	    export_symbols="$output_objdir/$libname.exp"
+	    $opt_dry_run || $RM $export_symbols
+	    cmds=$export_symbols_cmds
+	    save_ifs="$IFS"; IFS='~'
+	    for cmd1 in $cmds; do
+	      IFS="$save_ifs"
+	      # Take the normal branch if the nm_file_list_spec branch
+	      # doesn't work or if tool conversion is not needed.
+	      case $nm_file_list_spec~$to_tool_file_cmd in
+		*~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*)
+		  try_normal_branch=yes
+		  eval cmd=\"$cmd1\"
+		  func_len " $cmd"
+		  len=$func_len_result
+		  ;;
+		*)
+		  try_normal_branch=no
+		  ;;
+	      esac
+	      if test "$try_normal_branch" = yes \
+		 && { test "$len" -lt "$max_cmd_len" \
+		      || test "$max_cmd_len" -le -1; }
+	      then
+		func_show_eval "$cmd" 'exit $?'
+		skipped_export=false
+	      elif test -n "$nm_file_list_spec"; then
+		func_basename "$output"
+		output_la=$func_basename_result
+		save_libobjs=$libobjs
+		save_output=$output
+		output=${output_objdir}/${output_la}.nm
+		func_to_tool_file "$output"
+		libobjs=$nm_file_list_spec$func_to_tool_file_result
+		func_append delfiles " $output"
+		func_verbose "creating $NM input file list: $output"
+		for obj in $save_libobjs; do
+		  func_to_tool_file "$obj"
+		  $ECHO "$func_to_tool_file_result"
+		done > "$output"
+		eval cmd=\"$cmd1\"
+		func_show_eval "$cmd" 'exit $?'
+		output=$save_output
+		libobjs=$save_libobjs
+		skipped_export=false
+	      else
+		# The command line is too long to execute in one step.
+		func_verbose "using reloadable object file for export list..."
+		skipped_export=:
+		# Break out early, otherwise skipped_export may be
+		# set to false by a later but shorter cmd.
+		break
+	      fi
+	    done
+	    IFS="$save_ifs"
+	    if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then
+	      func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+	      func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+	    fi
+	  fi
+	fi
+
+	if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	  tmp_export_symbols="$export_symbols"
+	  test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+	  $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"'
+	fi
+
+	if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then
+	  # The given exports_symbols file has to be filtered, so filter it.
+	  func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+	  # FIXME: $output_objdir/$libname.filter potentially contains lots of
+	  # 's' commands which not all seds can handle. GNU sed should be fine
+	  # though. Also, the filter scales superlinearly with the number of
+	  # global variables. join(1) would be nice here, but unfortunately
+	  # isn't a blessed tool.
+	  $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+	  func_append delfiles " $export_symbols $output_objdir/$libname.filter"
+	  export_symbols=$output_objdir/$libname.def
+	  $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+	fi
+
+	tmp_deplibs=
+	for test_deplib in $deplibs; do
+	  case " $convenience " in
+	  *" $test_deplib "*) ;;
+	  *)
+	    func_append tmp_deplibs " $test_deplib"
+	    ;;
+	  esac
+	done
+	deplibs="$tmp_deplibs"
+
+	if test -n "$convenience"; then
+	  if test -n "$whole_archive_flag_spec" &&
+	    test "$compiler_needs_object" = yes &&
+	    test -z "$libobjs"; then
+	    # extract the archives, so we have objects to list.
+	    # TODO: could optimize this to just extract one archive.
+	    whole_archive_flag_spec=
+	  fi
+	  if test -n "$whole_archive_flag_spec"; then
+	    save_libobjs=$libobjs
+	    eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+	    test "X$libobjs" = "X " && libobjs=
+	  else
+	    gentop="$output_objdir/${outputname}x"
+	    func_append generated " $gentop"
+
+	    func_extract_archives $gentop $convenience
+	    func_append libobjs " $func_extract_archives_result"
+	    test "X$libobjs" = "X " && libobjs=
+	  fi
+	fi
+
+	if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
+	  eval flag=\"$thread_safe_flag_spec\"
+	  func_append linker_flags " $flag"
+	fi
+
+	# Make a backup of the uninstalled library when relinking
+	if test "$opt_mode" = relink; then
+	  $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $?
+	fi
+
+	# Do each of the archive commands.
+	if test "$module" = yes && test -n "$module_cmds" ; then
+	  if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+	    eval test_cmds=\"$module_expsym_cmds\"
+	    cmds=$module_expsym_cmds
+	  else
+	    eval test_cmds=\"$module_cmds\"
+	    cmds=$module_cmds
+	  fi
+	else
+	  if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+	    eval test_cmds=\"$archive_expsym_cmds\"
+	    cmds=$archive_expsym_cmds
+	  else
+	    eval test_cmds=\"$archive_cmds\"
+	    cmds=$archive_cmds
+	  fi
+	fi
+
+	if test "X$skipped_export" != "X:" &&
+	   func_len " $test_cmds" &&
+	   len=$func_len_result &&
+	   test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+	  :
+	else
+	  # The command line is too long to link in one step, link piecewise
+	  # or, if using GNU ld and skipped_export is not :, use a linker
+	  # script.
+
+	  # Save the value of $output and $libobjs because we want to
+	  # use them later.  If we have whole_archive_flag_spec, we
+	  # want to use save_libobjs as it was before
+	  # whole_archive_flag_spec was expanded, because we can't
+	  # assume the linker understands whole_archive_flag_spec.
+	  # This may have to be revisited, in case too many
+	  # convenience libraries get linked in and end up exceeding
+	  # the spec.
+	  if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then
+	    save_libobjs=$libobjs
+	  fi
+	  save_output=$output
+	  func_basename "$output"
+	  output_la=$func_basename_result
+
+	  # Clear the reloadable object creation command queue and
+	  # initialize k to one.
+	  test_cmds=
+	  concat_cmds=
+	  objlist=
+	  last_robj=
+	  k=1
+
+	  if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then
+	    output=${output_objdir}/${output_la}.lnkscript
+	    func_verbose "creating GNU ld script: $output"
+	    echo 'INPUT (' > $output
+	    for obj in $save_libobjs
+	    do
+	      func_to_tool_file "$obj"
+	      $ECHO "$func_to_tool_file_result" >> $output
+	    done
+	    echo ')' >> $output
+	    func_append delfiles " $output"
+	    func_to_tool_file "$output"
+	    output=$func_to_tool_file_result
+	  elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
+	    output=${output_objdir}/${output_la}.lnk
+	    func_verbose "creating linker input file list: $output"
+	    : > $output
+	    set x $save_libobjs
+	    shift
+	    firstobj=
+	    if test "$compiler_needs_object" = yes; then
+	      firstobj="$1 "
+	      shift
+	    fi
+	    for obj
+	    do
+	      func_to_tool_file "$obj"
+	      $ECHO "$func_to_tool_file_result" >> $output
+	    done
+	    func_append delfiles " $output"
+	    func_to_tool_file "$output"
+	    output=$firstobj\"$file_list_spec$func_to_tool_file_result\"
+	  else
+	    if test -n "$save_libobjs"; then
+	      func_verbose "creating reloadable object files..."
+	      output=$output_objdir/$output_la-${k}.$objext
+	      eval test_cmds=\"$reload_cmds\"
+	      func_len " $test_cmds"
+	      len0=$func_len_result
+	      len=$len0
+
+	      # Loop over the list of objects to be linked.
+	      for obj in $save_libobjs
+	      do
+		func_len " $obj"
+		func_arith $len + $func_len_result
+		len=$func_arith_result
+		if test "X$objlist" = X ||
+		   test "$len" -lt "$max_cmd_len"; then
+		  func_append objlist " $obj"
+		else
+		  # The command $test_cmds is almost too long, add a
+		  # command to the queue.
+		  if test "$k" -eq 1 ; then
+		    # The first file doesn't have a previous command to add.
+		    reload_objs=$objlist
+		    eval concat_cmds=\"$reload_cmds\"
+		  else
+		    # All subsequent reloadable object files will link in
+		    # the last one created.
+		    reload_objs="$objlist $last_robj"
+		    eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\"
+		  fi
+		  last_robj=$output_objdir/$output_la-${k}.$objext
+		  func_arith $k + 1
+		  k=$func_arith_result
+		  output=$output_objdir/$output_la-${k}.$objext
+		  objlist=" $obj"
+		  func_len " $last_robj"
+		  func_arith $len0 + $func_len_result
+		  len=$func_arith_result
+		fi
+	      done
+	      # Handle the remaining objects by creating one last
+	      # reloadable object file.  All subsequent reloadable object
+	      # files will link in the last one created.
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      reload_objs="$objlist $last_robj"
+	      eval concat_cmds=\"\${concat_cmds}$reload_cmds\"
+	      if test -n "$last_robj"; then
+	        eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\"
+	      fi
+	      func_append delfiles " $output"
+
+	    else
+	      output=
+	    fi
+
+	    if ${skipped_export-false}; then
+	      func_verbose "generating symbol list for \`$libname.la'"
+	      export_symbols="$output_objdir/$libname.exp"
+	      $opt_dry_run || $RM $export_symbols
+	      libobjs=$output
+	      # Append the command to create the export file.
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\"
+	      if test -n "$last_robj"; then
+		eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\"
+	      fi
+	    fi
+
+	    test -n "$save_libobjs" &&
+	      func_verbose "creating a temporary reloadable object file: $output"
+
+	    # Loop through the commands generated above and execute them.
+	    save_ifs="$IFS"; IFS='~'
+	    for cmd in $concat_cmds; do
+	      IFS="$save_ifs"
+	      $opt_silent || {
+		  func_quote_for_expand "$cmd"
+		  eval "func_echo $func_quote_for_expand_result"
+	      }
+	      $opt_dry_run || eval "$cmd" || {
+		lt_exit=$?
+
+		# Restore the uninstalled library and exit
+		if test "$opt_mode" = relink; then
+		  ( cd "$output_objdir" && \
+		    $RM "${realname}T" && \
+		    $MV "${realname}U" "$realname" )
+		fi
+
+		exit $lt_exit
+	      }
+	    done
+	    IFS="$save_ifs"
+
+	    if test -n "$export_symbols_regex" && ${skipped_export-false}; then
+	      func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
+	      func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
+	    fi
+	  fi
+
+          if ${skipped_export-false}; then
+	    if test -n "$export_symbols" && test -n "$include_expsyms"; then
+	      tmp_export_symbols="$export_symbols"
+	      test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
+	      $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"'
+	    fi
+
+	    if test -n "$orig_export_symbols"; then
+	      # The given exports_symbols file has to be filtered, so filter it.
+	      func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
+	      # FIXME: $output_objdir/$libname.filter potentially contains lots of
+	      # 's' commands which not all seds can handle. GNU sed should be fine
+	      # though. Also, the filter scales superlinearly with the number of
+	      # global variables. join(1) would be nice here, but unfortunately
+	      # isn't a blessed tool.
+	      $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
+	      func_append delfiles " $export_symbols $output_objdir/$libname.filter"
+	      export_symbols=$output_objdir/$libname.def
+	      $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
+	    fi
+	  fi
+
+	  libobjs=$output
+	  # Restore the value of output.
+	  output=$save_output
+
+	  if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then
+	    eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
+	    test "X$libobjs" = "X " && libobjs=
+	  fi
+	  # Expand the library linking commands again to reset the
+	  # value of $libobjs for piecewise linking.
+
+	  # Do each of the archive commands.
+	  if test "$module" = yes && test -n "$module_cmds" ; then
+	    if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
+	      cmds=$module_expsym_cmds
+	    else
+	      cmds=$module_cmds
+	    fi
+	  else
+	    if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
+	      cmds=$archive_expsym_cmds
+	    else
+	      cmds=$archive_cmds
+	    fi
+	  fi
+	fi
+
+	if test -n "$delfiles"; then
+	  # Append the command to remove temporary files to $cmds.
+	  eval cmds=\"\$cmds~\$RM $delfiles\"
+	fi
+
+	# Add any objects from preloaded convenience libraries
+	if test -n "$dlprefiles"; then
+	  gentop="$output_objdir/${outputname}x"
+	  func_append generated " $gentop"
+
+	  func_extract_archives $gentop $dlprefiles
+	  func_append libobjs " $func_extract_archives_result"
+	  test "X$libobjs" = "X " && libobjs=
+	fi
+
+	save_ifs="$IFS"; IFS='~'
+	for cmd in $cmds; do
+	  IFS="$save_ifs"
+	  eval cmd=\"$cmd\"
+	  $opt_silent || {
+	    func_quote_for_expand "$cmd"
+	    eval "func_echo $func_quote_for_expand_result"
+	  }
+	  $opt_dry_run || eval "$cmd" || {
+	    lt_exit=$?
+
+	    # Restore the uninstalled library and exit
+	    if test "$opt_mode" = relink; then
+	      ( cd "$output_objdir" && \
+	        $RM "${realname}T" && \
+		$MV "${realname}U" "$realname" )
+	    fi
+
+	    exit $lt_exit
+	  }
+	done
+	IFS="$save_ifs"
+
+	# Restore the uninstalled library and exit
+	if test "$opt_mode" = relink; then
+	  $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $?
+
+	  if test -n "$convenience"; then
+	    if test -z "$whole_archive_flag_spec"; then
+	      func_show_eval '${RM}r "$gentop"'
+	    fi
+	  fi
+
+	  exit $EXIT_SUCCESS
+	fi
+
+	# Create links to the real library.
+	for linkname in $linknames; do
+	  if test "$realname" != "$linkname"; then
+	    func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?'
+	  fi
+	done
+
+	# If -module or -export-dynamic was specified, set the dlname.
+	if test "$module" = yes || test "$export_dynamic" = yes; then
+	  # On all known operating systems, these are identical.
+	  dlname="$soname"
+	fi
+      fi
+      ;;
+
+    obj)
+      if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
+	func_warning "\`-dlopen' is ignored for objects"
+      fi
+
+      case " $deplibs" in
+      *\ -l* | *\ -L*)
+	func_warning "\`-l' and \`-L' are ignored for objects" ;;
+      esac
+
+      test -n "$rpath" && \
+	func_warning "\`-rpath' is ignored for objects"
+
+      test -n "$xrpath" && \
+	func_warning "\`-R' is ignored for objects"
+
+      test -n "$vinfo" && \
+	func_warning "\`-version-info' is ignored for objects"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for objects"
+
+      case $output in
+      *.lo)
+	test -n "$objs$old_deplibs" && \
+	  func_fatal_error "cannot build library object \`$output' from non-libtool objects"
+
+	libobj=$output
+	func_lo2o "$libobj"
+	obj=$func_lo2o_result
+	;;
+      *)
+	libobj=
+	obj="$output"
+	;;
+      esac
+
+      # Delete the old objects.
+      $opt_dry_run || $RM $obj $libobj
+
+      # Objects from convenience libraries.  This assumes
+      # single-version convenience libraries.  Whenever we create
+      # different ones for PIC/non-PIC, this we'll have to duplicate
+      # the extraction.
+      reload_conv_objs=
+      gentop=
+      # reload_cmds runs $LD directly, so let us get rid of
+      # -Wl from whole_archive_flag_spec and hope we can get by with
+      # turning comma into space..
+      wl=
+
+      if test -n "$convenience"; then
+	if test -n "$whole_archive_flag_spec"; then
+	  eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\"
+	  reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'`
+	else
+	  gentop="$output_objdir/${obj}x"
+	  func_append generated " $gentop"
+
+	  func_extract_archives $gentop $convenience
+	  reload_conv_objs="$reload_objs $func_extract_archives_result"
+	fi
+      fi
+
+      # If we're not building shared, we need to use non_pic_objs
+      test "$build_libtool_libs" != yes && libobjs="$non_pic_objects"
+
+      # Create the old-style object.
+      reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
+
+      output="$obj"
+      func_execute_cmds "$reload_cmds" 'exit $?'
+
+      # Exit if we aren't doing a library object file.
+      if test -z "$libobj"; then
+	if test -n "$gentop"; then
+	  func_show_eval '${RM}r "$gentop"'
+	fi
+
+	exit $EXIT_SUCCESS
+      fi
+
+      if test "$build_libtool_libs" != yes; then
+	if test -n "$gentop"; then
+	  func_show_eval '${RM}r "$gentop"'
+	fi
+
+	# Create an invalid libtool object if no PIC, so that we don't
+	# accidentally link it into a program.
+	# $show "echo timestamp > $libobj"
+	# $opt_dry_run || eval "echo timestamp > $libobj" || exit $?
+	exit $EXIT_SUCCESS
+      fi
+
+      if test -n "$pic_flag" || test "$pic_mode" != default; then
+	# Only do commands if we really have different PIC objects.
+	reload_objs="$libobjs $reload_conv_objs"
+	output="$libobj"
+	func_execute_cmds "$reload_cmds" 'exit $?'
+      fi
+
+      if test -n "$gentop"; then
+	func_show_eval '${RM}r "$gentop"'
+      fi
+
+      exit $EXIT_SUCCESS
+      ;;
+
+    prog)
+      case $host in
+	*cygwin*) func_stripname '' '.exe' "$output"
+	          output=$func_stripname_result.exe;;
+      esac
+      test -n "$vinfo" && \
+	func_warning "\`-version-info' is ignored for programs"
+
+      test -n "$release" && \
+	func_warning "\`-release' is ignored for programs"
+
+      test "$preload" = yes \
+        && test "$dlopen_support" = unknown \
+	&& test "$dlopen_self" = unknown \
+	&& test "$dlopen_self_static" = unknown && \
+	  func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support."
+
+      case $host in
+      *-*-rhapsody* | *-*-darwin1.[012])
+	# On Rhapsody replace the C library is the System framework
+	compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'`
+	finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'`
+	;;
+      esac
+
+      case $host in
+      *-*-darwin*)
+	# Don't allow lazy linking, it breaks C++ global constructors
+	# But is supposedly fixed on 10.4 or later (yay!).
+	if test "$tagname" = CXX ; then
+	  case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
+	    10.[0123])
+	      func_append compile_command " ${wl}-bind_at_load"
+	      func_append finalize_command " ${wl}-bind_at_load"
+	    ;;
+	  esac
+	fi
+	# Time to change all our "foo.ltframework" stuff back to "-framework foo"
+	compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
+	;;
+      esac
+
+
+      # move library search paths that coincide with paths to not yet
+      # installed libraries to the beginning of the library search list
+      new_libs=
+      for path in $notinst_path; do
+	case " $new_libs " in
+	*" -L$path/$objdir "*) ;;
+	*)
+	  case " $compile_deplibs " in
+	  *" -L$path/$objdir "*)
+	    func_append new_libs " -L$path/$objdir" ;;
+	  esac
+	  ;;
+	esac
+      done
+      for deplib in $compile_deplibs; do
+	case $deplib in
+	-L*)
+	  case " $new_libs " in
+	  *" $deplib "*) ;;
+	  *) func_append new_libs " $deplib" ;;
+	  esac
+	  ;;
+	*) func_append new_libs " $deplib" ;;
+	esac
+      done
+      compile_deplibs="$new_libs"
+
+
+      func_append compile_command " $compile_deplibs"
+      func_append finalize_command " $finalize_deplibs"
+
+      if test -n "$rpath$xrpath"; then
+	# If the user specified any rpath flags, then add them.
+	for libdir in $rpath $xrpath; do
+	  # This is the magic to use -rpath.
+	  case "$finalize_rpath " in
+	  *" $libdir "*) ;;
+	  *) func_append finalize_rpath " $libdir" ;;
+	  esac
+	done
+      fi
+
+      # Now hardcode the library paths
+      rpath=
+      hardcode_libdirs=
+      for libdir in $compile_rpath $finalize_rpath; do
+	if test -n "$hardcode_libdir_flag_spec"; then
+	  if test -n "$hardcode_libdir_separator"; then
+	    if test -z "$hardcode_libdirs"; then
+	      hardcode_libdirs="$libdir"
+	    else
+	      # Just accumulate the unique libdirs.
+	      case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+	      *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		;;
+	      *)
+		func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
+		;;
+	      esac
+	    fi
+	  else
+	    eval flag=\"$hardcode_libdir_flag_spec\"
+	    func_append rpath " $flag"
+	  fi
+	elif test -n "$runpath_var"; then
+	  case "$perm_rpath " in
+	  *" $libdir "*) ;;
+	  *) func_append perm_rpath " $libdir" ;;
+	  esac
+	fi
+	case $host in
+	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	  testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
+	  case :$dllsearchpath: in
+	  *":$libdir:"*) ;;
+	  ::) dllsearchpath=$libdir;;
+	  *) func_append dllsearchpath ":$libdir";;
+	  esac
+	  case :$dllsearchpath: in
+	  *":$testbindir:"*) ;;
+	  ::) dllsearchpath=$testbindir;;
+	  *) func_append dllsearchpath ":$testbindir";;
+	  esac
+	  ;;
+	esac
+      done
+      # Substitute the hardcoded libdirs into the rpath.
+      if test -n "$hardcode_libdir_separator" &&
+	 test -n "$hardcode_libdirs"; then
+	libdir="$hardcode_libdirs"
+	eval rpath=\" $hardcode_libdir_flag_spec\"
+      fi
+      compile_rpath="$rpath"
+
+      rpath=
+      hardcode_libdirs=
+      for libdir in $finalize_rpath; do
+	if test -n "$hardcode_libdir_flag_spec"; then
+	  if test -n "$hardcode_libdir_separator"; then
+	    if test -z "$hardcode_libdirs"; then
+	      hardcode_libdirs="$libdir"
+	    else
+	      # Just accumulate the unique libdirs.
+	      case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
+	      *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
+		;;
+	      *)
+		func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
+		;;
+	      esac
+	    fi
+	  else
+	    eval flag=\"$hardcode_libdir_flag_spec\"
+	    func_append rpath " $flag"
+	  fi
+	elif test -n "$runpath_var"; then
+	  case "$finalize_perm_rpath " in
+	  *" $libdir "*) ;;
+	  *) func_append finalize_perm_rpath " $libdir" ;;
+	  esac
+	fi
+      done
+      # Substitute the hardcoded libdirs into the rpath.
+      if test -n "$hardcode_libdir_separator" &&
+	 test -n "$hardcode_libdirs"; then
+	libdir="$hardcode_libdirs"
+	eval rpath=\" $hardcode_libdir_flag_spec\"
+      fi
+      finalize_rpath="$rpath"
+
+      if test -n "$libobjs" && test "$build_old_libs" = yes; then
+	# Transform all the library objects into standard objects.
+	compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
+	finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
+      fi
+
+      func_generate_dlsyms "$outputname" "@PROGRAM@" "no"
+
+      # template prelinking step
+      if test -n "$prelink_cmds"; then
+	func_execute_cmds "$prelink_cmds" 'exit $?'
+      fi
+
+      wrappers_required=yes
+      case $host in
+      *cegcc* | *mingw32ce*)
+        # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway.
+        wrappers_required=no
+        ;;
+      *cygwin* | *mingw* )
+        if test "$build_libtool_libs" != yes; then
+          wrappers_required=no
+        fi
+        ;;
+      *)
+        if test "$need_relink" = no || test "$build_libtool_libs" != yes; then
+          wrappers_required=no
+        fi
+        ;;
+      esac
+      if test "$wrappers_required" = no; then
+	# Replace the output file specification.
+	compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
+	link_command="$compile_command$compile_rpath"
+
+	# We have no uninstalled library dependencies, so finalize right now.
+	exit_status=0
+	func_show_eval "$link_command" 'exit_status=$?'
+
+	if test -n "$postlink_cmds"; then
+	  func_to_tool_file "$output"
+	  postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+	  func_execute_cmds "$postlink_cmds" 'exit $?'
+	fi
+
+	# Delete the generated files.
+	if test -f "$output_objdir/${outputname}S.${objext}"; then
+	  func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
+	fi
+
+	exit $exit_status
+      fi
+
+      if test -n "$compile_shlibpath$finalize_shlibpath"; then
+	compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command"
+      fi
+      if test -n "$finalize_shlibpath"; then
+	finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command"
+      fi
+
+      compile_var=
+      finalize_var=
+      if test -n "$runpath_var"; then
+	if test -n "$perm_rpath"; then
+	  # We should set the runpath_var.
+	  rpath=
+	  for dir in $perm_rpath; do
+	    func_append rpath "$dir:"
+	  done
+	  compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
+	fi
+	if test -n "$finalize_perm_rpath"; then
+	  # We should set the runpath_var.
+	  rpath=
+	  for dir in $finalize_perm_rpath; do
+	    func_append rpath "$dir:"
+	  done
+	  finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
+	fi
+      fi
+
+      if test "$no_install" = yes; then
+	# We don't need to create a wrapper script.
+	link_command="$compile_var$compile_command$compile_rpath"
+	# Replace the output file specification.
+	link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
+	# Delete the old output file.
+	$opt_dry_run || $RM $output
+	# Link the executable and exit
+	func_show_eval "$link_command" 'exit $?'
+
+	if test -n "$postlink_cmds"; then
+	  func_to_tool_file "$output"
+	  postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+	  func_execute_cmds "$postlink_cmds" 'exit $?'
+	fi
+
+	exit $EXIT_SUCCESS
+      fi
+
+      if test "$hardcode_action" = relink; then
+	# Fast installation is not supported
+	link_command="$compile_var$compile_command$compile_rpath"
+	relink_command="$finalize_var$finalize_command$finalize_rpath"
+
+	func_warning "this platform does not like uninstalled shared libraries"
+	func_warning "\`$output' will be relinked during installation"
+      else
+	if test "$fast_install" != no; then
+	  link_command="$finalize_var$compile_command$finalize_rpath"
+	  if test "$fast_install" = yes; then
+	    relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'`
+	  else
+	    # fast_install is set to needless
+	    relink_command=
+	  fi
+	else
+	  link_command="$compile_var$compile_command$compile_rpath"
+	  relink_command="$finalize_var$finalize_command$finalize_rpath"
+	fi
+      fi
+
+      # Replace the output file specification.
+      link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'`
+
+      # Delete the old output files.
+      $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname
+
+      func_show_eval "$link_command" 'exit $?'
+
+      if test -n "$postlink_cmds"; then
+	func_to_tool_file "$output_objdir/$outputname"
+	postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
+	func_execute_cmds "$postlink_cmds" 'exit $?'
+      fi
+
+      # Now create the wrapper script.
+      func_verbose "creating $output"
+
+      # Quote the relink command for shipping.
+      if test -n "$relink_command"; then
+	# Preserve any variables that may affect compiler behavior
+	for var in $variables_saved_for_relink; do
+	  if eval test -z \"\${$var+set}\"; then
+	    relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+	  elif eval var_value=\$$var; test -z "$var_value"; then
+	    relink_command="$var=; export $var; $relink_command"
+	  else
+	    func_quote_for_eval "$var_value"
+	    relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	  fi
+	done
+	relink_command="(cd `pwd`; $relink_command)"
+	relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+      fi
+
+      # Only actually do things if not in dry run mode.
+      $opt_dry_run || {
+	# win32 will think the script is a binary if it has
+	# a .exe suffix, so we strip it off here.
+	case $output in
+	  *.exe) func_stripname '' '.exe' "$output"
+	         output=$func_stripname_result ;;
+	esac
+	# test for cygwin because mv fails w/o .exe extensions
+	case $host in
+	  *cygwin*)
+	    exeext=.exe
+	    func_stripname '' '.exe' "$outputname"
+	    outputname=$func_stripname_result ;;
+	  *) exeext= ;;
+	esac
+	case $host in
+	  *cygwin* | *mingw* )
+	    func_dirname_and_basename "$output" "" "."
+	    output_name=$func_basename_result
+	    output_path=$func_dirname_result
+	    cwrappersource="$output_path/$objdir/lt-$output_name.c"
+	    cwrapper="$output_path/$output_name.exe"
+	    $RM $cwrappersource $cwrapper
+	    trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
+
+	    func_emit_cwrapperexe_src > $cwrappersource
+
+	    # The wrapper executable is built using the $host compiler,
+	    # because it contains $host paths and files. If cross-
+	    # compiling, it, like the target executable, must be
+	    # executed on the $host or under an emulation environment.
+	    $opt_dry_run || {
+	      $LTCC $LTCFLAGS -o $cwrapper $cwrappersource
+	      $STRIP $cwrapper
+	    }
+
+	    # Now, create the wrapper script for func_source use:
+	    func_ltwrapper_scriptname $cwrapper
+	    $RM $func_ltwrapper_scriptname_result
+	    trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15
+	    $opt_dry_run || {
+	      # note: this script will not be executed, so do not chmod.
+	      if test "x$build" = "x$host" ; then
+		$cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
+	      else
+		func_emit_wrapper no > $func_ltwrapper_scriptname_result
+	      fi
+	    }
+	  ;;
+	  * )
+	    $RM $output
+	    trap "$RM $output; exit $EXIT_FAILURE" 1 2 15
+
+	    func_emit_wrapper no > $output
+	    chmod +x $output
+	  ;;
+	esac
+      }
+      exit $EXIT_SUCCESS
+      ;;
+    esac
+
+    # See if we need to build an old-fashioned archive.
+    for oldlib in $oldlibs; do
+
+      if test "$build_libtool_libs" = convenience; then
+	oldobjs="$libobjs_save $symfileobj"
+	addlibs="$convenience"
+	build_libtool_libs=no
+      else
+	if test "$build_libtool_libs" = module; then
+	  oldobjs="$libobjs_save"
+	  build_libtool_libs=no
+	else
+	  oldobjs="$old_deplibs $non_pic_objects"
+	  if test "$preload" = yes && test -f "$symfileobj"; then
+	    func_append oldobjs " $symfileobj"
+	  fi
+	fi
+	addlibs="$old_convenience"
+      fi
+
+      if test -n "$addlibs"; then
+	gentop="$output_objdir/${outputname}x"
+	func_append generated " $gentop"
+
+	func_extract_archives $gentop $addlibs
+	func_append oldobjs " $func_extract_archives_result"
+      fi
+
+      # Do each command in the archive commands.
+      if test -n "$old_archive_from_new_cmds" && test "$build_libtool_libs" = yes; then
+	cmds=$old_archive_from_new_cmds
+      else
+
+	# Add any objects from preloaded convenience libraries
+	if test -n "$dlprefiles"; then
+	  gentop="$output_objdir/${outputname}x"
+	  func_append generated " $gentop"
+
+	  func_extract_archives $gentop $dlprefiles
+	  func_append oldobjs " $func_extract_archives_result"
+	fi
+
+	# POSIX demands no paths to be encoded in archives.  We have
+	# to avoid creating archives with duplicate basenames if we
+	# might have to extract them afterwards, e.g., when creating a
+	# static archive out of a convenience library, or when linking
+	# the entirety of a libtool archive into another (currently
+	# not supported by libtool).
+	if (for obj in $oldobjs
+	    do
+	      func_basename "$obj"
+	      $ECHO "$func_basename_result"
+	    done | sort | sort -uc >/dev/null 2>&1); then
+	  :
+	else
+	  echo "copying selected object files to avoid basename conflicts..."
+	  gentop="$output_objdir/${outputname}x"
+	  func_append generated " $gentop"
+	  func_mkdir_p "$gentop"
+	  save_oldobjs=$oldobjs
+	  oldobjs=
+	  counter=1
+	  for obj in $save_oldobjs
+	  do
+	    func_basename "$obj"
+	    objbase="$func_basename_result"
+	    case " $oldobjs " in
+	    " ") oldobjs=$obj ;;
+	    *[\ /]"$objbase "*)
+	      while :; do
+		# Make sure we don't pick an alternate name that also
+		# overlaps.
+		newobj=lt$counter-$objbase
+		func_arith $counter + 1
+		counter=$func_arith_result
+		case " $oldobjs " in
+		*[\ /]"$newobj "*) ;;
+		*) if test ! -f "$gentop/$newobj"; then break; fi ;;
+		esac
+	      done
+	      func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
+	      func_append oldobjs " $gentop/$newobj"
+	      ;;
+	    *) func_append oldobjs " $obj" ;;
+	    esac
+	  done
+	fi
+	func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+	tool_oldlib=$func_to_tool_file_result
+	eval cmds=\"$old_archive_cmds\"
+
+	func_len " $cmds"
+	len=$func_len_result
+	if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
+	  cmds=$old_archive_cmds
+	elif test -n "$archiver_list_spec"; then
+	  func_verbose "using command file archive linking..."
+	  for obj in $oldobjs
+	  do
+	    func_to_tool_file "$obj"
+	    $ECHO "$func_to_tool_file_result"
+	  done > $output_objdir/$libname.libcmd
+	  func_to_tool_file "$output_objdir/$libname.libcmd"
+	  oldobjs=" $archiver_list_spec$func_to_tool_file_result"
+	  cmds=$old_archive_cmds
+	else
+	  # the command line is too long to link in one step, link in parts
+	  func_verbose "using piecewise archive linking..."
+	  save_RANLIB=$RANLIB
+	  RANLIB=:
+	  objlist=
+	  concat_cmds=
+	  save_oldobjs=$oldobjs
+	  oldobjs=
+	  # Is there a better way of finding the last object in the list?
+	  for obj in $save_oldobjs
+	  do
+	    last_oldobj=$obj
+	  done
+	  eval test_cmds=\"$old_archive_cmds\"
+	  func_len " $test_cmds"
+	  len0=$func_len_result
+	  len=$len0
+	  for obj in $save_oldobjs
+	  do
+	    func_len " $obj"
+	    func_arith $len + $func_len_result
+	    len=$func_arith_result
+	    func_append objlist " $obj"
+	    if test "$len" -lt "$max_cmd_len"; then
+	      :
+	    else
+	      # the above command should be used before it gets too long
+	      oldobjs=$objlist
+	      if test "$obj" = "$last_oldobj" ; then
+		RANLIB=$save_RANLIB
+	      fi
+	      test -z "$concat_cmds" || concat_cmds=$concat_cmds~
+	      eval concat_cmds=\"\${concat_cmds}$old_archive_cmds\"
+	      objlist=
+	      len=$len0
+	    fi
+	  done
+	  RANLIB=$save_RANLIB
+	  oldobjs=$objlist
+	  if test "X$oldobjs" = "X" ; then
+	    eval cmds=\"\$concat_cmds\"
+	  else
+	    eval cmds=\"\$concat_cmds~\$old_archive_cmds\"
+	  fi
+	fi
+      fi
+      func_execute_cmds "$cmds" 'exit $?'
+    done
+
+    test -n "$generated" && \
+      func_show_eval "${RM}r$generated"
+
+    # Now create the libtool archive.
+    case $output in
+    *.la)
+      old_library=
+      test "$build_old_libs" = yes && old_library="$libname.$libext"
+      func_verbose "creating $output"
+
+      # Preserve any variables that may affect compiler behavior
+      for var in $variables_saved_for_relink; do
+	if eval test -z \"\${$var+set}\"; then
+	  relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
+	elif eval var_value=\$$var; test -z "$var_value"; then
+	  relink_command="$var=; export $var; $relink_command"
+	else
+	  func_quote_for_eval "$var_value"
+	  relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
+	fi
+      done
+      # Quote the link command for shipping.
+      relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
+      relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
+      if test "$hardcode_automatic" = yes ; then
+	relink_command=
+      fi
+
+      # Only create the output if not a dry run.
+      $opt_dry_run || {
+	for installed in no yes; do
+	  if test "$installed" = yes; then
+	    if test -z "$install_libdir"; then
+	      break
+	    fi
+	    output="$output_objdir/$outputname"i
+	    # Replace all uninstalled libtool libraries with the installed ones
+	    newdependency_libs=
+	    for deplib in $dependency_libs; do
+	      case $deplib in
+	      *.la)
+		func_basename "$deplib"
+		name="$func_basename_result"
+		func_resolve_sysroot "$deplib"
+		eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$deplib' is not a valid libtool archive"
+		func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name"
+		;;
+	      -L*)
+		func_stripname -L '' "$deplib"
+		func_replace_sysroot "$func_stripname_result"
+		func_append newdependency_libs " -L$func_replace_sysroot_result"
+		;;
+	      -R*)
+		func_stripname -R '' "$deplib"
+		func_replace_sysroot "$func_stripname_result"
+		func_append newdependency_libs " -R$func_replace_sysroot_result"
+		;;
+	      *) func_append newdependency_libs " $deplib" ;;
+	      esac
+	    done
+	    dependency_libs="$newdependency_libs"
+	    newdlfiles=
+
+	    for lib in $dlfiles; do
+	      case $lib in
+	      *.la)
+	        func_basename "$lib"
+		name="$func_basename_result"
+		eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$lib' is not a valid libtool archive"
+		func_append newdlfiles " ${lt_sysroot:+=}$libdir/$name"
+		;;
+	      *) func_append newdlfiles " $lib" ;;
+	      esac
+	    done
+	    dlfiles="$newdlfiles"
+	    newdlprefiles=
+	    for lib in $dlprefiles; do
+	      case $lib in
+	      *.la)
+		# Only pass preopened files to the pseudo-archive (for
+		# eventual linking with the app. that links it) if we
+		# didn't already link the preopened objects directly into
+		# the library:
+		func_basename "$lib"
+		name="$func_basename_result"
+		eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
+		test -z "$libdir" && \
+		  func_fatal_error "\`$lib' is not a valid libtool archive"
+		func_append newdlprefiles " ${lt_sysroot:+=}$libdir/$name"
+		;;
+	      esac
+	    done
+	    dlprefiles="$newdlprefiles"
+	  else
+	    newdlfiles=
+	    for lib in $dlfiles; do
+	      case $lib in
+		[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+		*) abs=`pwd`"/$lib" ;;
+	      esac
+	      func_append newdlfiles " $abs"
+	    done
+	    dlfiles="$newdlfiles"
+	    newdlprefiles=
+	    for lib in $dlprefiles; do
+	      case $lib in
+		[\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
+		*) abs=`pwd`"/$lib" ;;
+	      esac
+	      func_append newdlprefiles " $abs"
+	    done
+	    dlprefiles="$newdlprefiles"
+	  fi
+	  $RM $output
+	  # place dlname in correct position for cygwin
+	  # In fact, it would be nice if we could use this code for all target
+	  # systems that can't hard-code library paths into their executables
+	  # and that have no shared library path variable independent of PATH,
+	  # but it turns out we can't easily determine that from inspecting
+	  # libtool variables, so we have to hard-code the OSs to which it
+	  # applies here; at the moment, that means platforms that use the PE
+	  # object format with DLL files.  See the long comment at the top of
+	  # tests/bindir.at for full details.
+	  tdlname=$dlname
+	  case $host,$output,$installed,$module,$dlname in
+	    *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll)
+	      # If a -bindir argument was supplied, place the dll there.
+	      if test "x$bindir" != x ;
+	      then
+		func_relative_path "$install_libdir" "$bindir"
+		tdlname=$func_relative_path_result$dlname
+	      else
+		# Otherwise fall back on heuristic.
+		tdlname=../bin/$dlname
+	      fi
+	      ;;
+	  esac
+	  $ECHO > $output "\
+# $outputname - a libtool library file
+# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname='$tdlname'
+
+# Names of this library.
+library_names='$library_names'
+
+# The name of the static archive.
+old_library='$old_library'
+
+# Linker flags that can not go in dependency_libs.
+inherited_linker_flags='$new_inherited_linker_flags'
+
+# Libraries that this one depends upon.
+dependency_libs='$dependency_libs'
+
+# Names of additional weak libraries provided by this library
+weak_library_names='$weak_libs'
+
+# Version information for $libname.
+current=$current
+age=$age
+revision=$revision
+
+# Is this an already installed library?
+installed=$installed
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=$module
+
+# Files to dlopen/dlpreopen
+dlopen='$dlfiles'
+dlpreopen='$dlprefiles'
+
+# Directory that this library needs to be installed in:
+libdir='$install_libdir'"
+	  if test "$installed" = no && test "$need_relink" = yes; then
+	    $ECHO >> $output "\
+relink_command=\"$relink_command\""
+	  fi
+	done
+      }
+
+      # Do a symbolic link so that the libtool archive can be found in
+      # LD_LIBRARY_PATH before the program is installed.
+      func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?'
+      ;;
+    esac
+    exit $EXIT_SUCCESS
+}
+
+{ test "$opt_mode" = link || test "$opt_mode" = relink; } &&
+    func_mode_link ${1+"$@"}
+
+
+# func_mode_uninstall arg...
+func_mode_uninstall ()
+{
+    $opt_debug
+    RM="$nonopt"
+    files=
+    rmforce=
+    exit_status=0
+
+    # This variable tells wrapper scripts just to set variables rather
+    # than running their programs.
+    libtool_install_magic="$magic"
+
+    for arg
+    do
+      case $arg in
+      -f) func_append RM " $arg"; rmforce=yes ;;
+      -*) func_append RM " $arg" ;;
+      *) func_append files " $arg" ;;
+      esac
+    done
+
+    test -z "$RM" && \
+      func_fatal_help "you must specify an RM program"
+
+    rmdirs=
+
+    for file in $files; do
+      func_dirname "$file" "" "."
+      dir="$func_dirname_result"
+      if test "X$dir" = X.; then
+	odir="$objdir"
+      else
+	odir="$dir/$objdir"
+      fi
+      func_basename "$file"
+      name="$func_basename_result"
+      test "$opt_mode" = uninstall && odir="$dir"
+
+      # Remember odir for removal later, being careful to avoid duplicates
+      if test "$opt_mode" = clean; then
+	case " $rmdirs " in
+	  *" $odir "*) ;;
+	  *) func_append rmdirs " $odir" ;;
+	esac
+      fi
+
+      # Don't error if the file doesn't exist and rm -f was used.
+      if { test -L "$file"; } >/dev/null 2>&1 ||
+	 { test -h "$file"; } >/dev/null 2>&1 ||
+	 test -f "$file"; then
+	:
+      elif test -d "$file"; then
+	exit_status=1
+	continue
+      elif test "$rmforce" = yes; then
+	continue
+      fi
+
+      rmfiles="$file"
+
+      case $name in
+      *.la)
+	# Possibly a libtool archive, so verify it.
+	if func_lalib_p "$file"; then
+	  func_source $dir/$name
+
+	  # Delete the libtool libraries and symlinks.
+	  for n in $library_names; do
+	    func_append rmfiles " $odir/$n"
+	  done
+	  test -n "$old_library" && func_append rmfiles " $odir/$old_library"
+
+	  case "$opt_mode" in
+	  clean)
+	    case " $library_names " in
+	    *" $dlname "*) ;;
+	    *) test -n "$dlname" && func_append rmfiles " $odir/$dlname" ;;
+	    esac
+	    test -n "$libdir" && func_append rmfiles " $odir/$name $odir/${name}i"
+	    ;;
+	  uninstall)
+	    if test -n "$library_names"; then
+	      # Do each command in the postuninstall commands.
+	      func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+	    fi
+
+	    if test -n "$old_library"; then
+	      # Do each command in the old_postuninstall commands.
+	      func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
+	    fi
+	    # FIXME: should reinstall the best remaining shared library.
+	    ;;
+	  esac
+	fi
+	;;
+
+      *.lo)
+	# Possibly a libtool object, so verify it.
+	if func_lalib_p "$file"; then
+
+	  # Read the .lo file
+	  func_source $dir/$name
+
+	  # Add PIC object to the list of files to remove.
+	  if test -n "$pic_object" &&
+	     test "$pic_object" != none; then
+	    func_append rmfiles " $dir/$pic_object"
+	  fi
+
+	  # Add non-PIC object to the list of files to remove.
+	  if test -n "$non_pic_object" &&
+	     test "$non_pic_object" != none; then
+	    func_append rmfiles " $dir/$non_pic_object"
+	  fi
+	fi
+	;;
+
+      *)
+	if test "$opt_mode" = clean ; then
+	  noexename=$name
+	  case $file in
+	  *.exe)
+	    func_stripname '' '.exe' "$file"
+	    file=$func_stripname_result
+	    func_stripname '' '.exe' "$name"
+	    noexename=$func_stripname_result
+	    # $file with .exe has already been added to rmfiles,
+	    # add $file without .exe
+	    func_append rmfiles " $file"
+	    ;;
+	  esac
+	  # Do a test to see if this is a libtool program.
+	  if func_ltwrapper_p "$file"; then
+	    if func_ltwrapper_executable_p "$file"; then
+	      func_ltwrapper_scriptname "$file"
+	      relink_command=
+	      func_source $func_ltwrapper_scriptname_result
+	      func_append rmfiles " $func_ltwrapper_scriptname_result"
+	    else
+	      relink_command=
+	      func_source $dir/$noexename
+	    fi
+
+	    # note $name still contains .exe if it was in $file originally
+	    # as does the version of $file that was added into $rmfiles
+	    func_append rmfiles " $odir/$name $odir/${name}S.${objext}"
+	    if test "$fast_install" = yes && test -n "$relink_command"; then
+	      func_append rmfiles " $odir/lt-$name"
+	    fi
+	    if test "X$noexename" != "X$name" ; then
+	      func_append rmfiles " $odir/lt-${noexename}.c"
+	    fi
+	  fi
+	fi
+	;;
+      esac
+      func_show_eval "$RM $rmfiles" 'exit_status=1'
+    done
+
+    # Try to remove the ${objdir}s in the directories where we deleted files
+    for dir in $rmdirs; do
+      if test -d "$dir"; then
+	func_show_eval "rmdir $dir >/dev/null 2>&1"
+      fi
+    done
+
+    exit $exit_status
+}
+
+{ test "$opt_mode" = uninstall || test "$opt_mode" = clean; } &&
+    func_mode_uninstall ${1+"$@"}
+
+test -z "$opt_mode" && {
+  help="$generic_help"
+  func_fatal_help "you must specify a MODE"
+}
+
+test -z "$exec_cmd" && \
+  func_fatal_help "invalid operation mode \`$opt_mode'"
+
+if test -n "$exec_cmd"; then
+  eval exec "$exec_cmd"
+  exit $EXIT_FAILURE
+fi
+
+exit $exit_status
+
+
+# The TAGs below are defined such that we never get into a situation
+# in which we disable both kinds of libraries.  Given conflicting
+# choices, we go for a static library, that is the most portable,
+# since we can't tell whether shared libraries were disabled because
+# the user asked for that or because the platform doesn't support
+# them.  This is particularly important on AIX, because we don't
+# support having both static and shared libraries enabled at the same
+# time on that platform, so we default to a shared-only configuration.
+# If a disable-shared tag is given, we'll fallback to a static-only
+# configuration.  But we'll never go from static-only to shared-only.
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
+build_libtool_libs=no
+build_old_libs=yes
+# ### END LIBTOOL TAG CONFIG: disable-shared
+
+# ### BEGIN LIBTOOL TAG CONFIG: disable-static
+build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac`
+# ### END LIBTOOL TAG CONFIG: disable-static
+
+# Local Variables:
+# mode:shell-script
+# sh-indentation:2
+# End:
+# vi:sw=2
+
diff --git a/src/erasure-code/jerasure/jerasure/m4/ax_check_compile_flag.m4 b/src/erasure-code/jerasure/jerasure/m4/ax_check_compile_flag.m4
new file mode 100644
index 00000000..c3a8d695
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ax_check_compile_flag.m4
@@ -0,0 +1,72 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#
+# DESCRIPTION
+#
+#   Check whether the given FLAG works with the current language's compiler
+#   or gives an error.  (Warnings, however, are ignored)
+#
+#   ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
+#   success/failure.
+#
+#   If EXTRA-FLAGS is defined, it is added to the current language's default
+#   flags (e.g. CFLAGS) when the check is done.  The check is thus made with
+#   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
+#   force the compiler to issue an error when a bad flag is given.
+#
+#   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
+#   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Guido U. Draheim 
+#   Copyright (c) 2011 Maarten Bosmans 
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see .
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 2
+
+AC_DEFUN([AX_CHECK_COMPILE_FLAG],
+[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
+  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
+  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+    [AS_VAR_SET(CACHEVAR,[yes])],
+    [AS_VAR_SET(CACHEVAR,[no])])
+  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
+AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+  [m4_default([$2], :)],
+  [m4_default([$3], :)])
+AS_VAR_POPDEF([CACHEVAR])dnl
+])dnl AX_CHECK_COMPILE_FLAGS
diff --git a/src/erasure-code/jerasure/jerasure/m4/ax_ext.m4 b/src/erasure-code/jerasure/jerasure/m4/ax_ext.m4
new file mode 100644
index 00000000..1ee3b94c
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ax_ext.m4
@@ -0,0 +1,245 @@
+#
+# Updated by KMG to support -DINTEL_SSE for GF-Complete
+#
+# ===========================================================================
+#          http://www.gnu.org/software/autoconf-archive/ax_ext.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_EXT
+#
+# DESCRIPTION
+#
+#   Find supported SIMD extensions by requesting cpuid. When an SIMD
+#   extension is found, the -m"simdextensionname" is added to SIMD_FLAGS if
+#   compiler supports it. For example, if "sse2" is available, then "-msse2"
+#   is added to SIMD_FLAGS.
+#
+#   This macro calls:
+#
+#     AC_SUBST(SIMD_FLAGS)
+#
+#   And defines:
+#
+#     HAVE_MMX / HAVE_SSE / HAVE_SSE2 / HAVE_SSE3 / HAVE_SSSE3 / HAVE_SSE4.1 / HAVE_SSE4.2 / HAVE_AVX
+#
+# LICENSE
+#
+#   Copyright (c) 2007 Christophe Tournayre 
+#   Copyright (c) 2013 Michael Petch 
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 12
+
+AC_DEFUN([AX_EXT],
+[
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  case $host_cpu in
+    powerpc*)
+      AC_CACHE_CHECK([whether altivec is supported], [ax_cv_have_altivec_ext],
+          [
+            if test `/usr/sbin/sysctl -a 2>/dev/null| grep -c hw.optional.altivec` != 0; then
+                if test `/usr/sbin/sysctl -n hw.optional.altivec` = 1; then
+                  ax_cv_have_altivec_ext=yes
+                fi
+            fi
+          ])
+
+          if test "$ax_cv_have_altivec_ext" = yes; then
+            AC_DEFINE(HAVE_ALTIVEC,,[Support Altivec instructions])
+            AX_CHECK_COMPILE_FLAG(-faltivec, SIMD_FLAGS="$SIMD_FLAGS -faltivec", [])
+          fi
+    ;;
+
+
+    i[[3456]]86*|x86_64*|amd64*)
+
+      AC_REQUIRE([AX_GCC_X86_CPUID])
+      AC_REQUIRE([AX_GCC_X86_AVX_XGETBV])
+
+      AX_GCC_X86_CPUID(0x00000001)
+      ecx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 3`
+      edx=`echo $ax_cv_gcc_x86_cpuid_0x00000001 | cut -d ":" -f 4`
+
+      AC_CACHE_CHECK([whether mmx is supported], [ax_cv_have_mmx_ext],
+      [
+        ax_cv_have_mmx_ext=no
+        if test "$((0x$edx>>23&0x01))" = 1; then
+          ax_cv_have_mmx_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse is supported], [ax_cv_have_sse_ext],
+      [
+        ax_cv_have_sse_ext=no
+        if test "$((0x$edx>>25&0x01))" = 1; then
+          ax_cv_have_sse_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse2 is supported], [ax_cv_have_sse2_ext],
+      [
+        ax_cv_have_sse2_ext=no
+        if test "$((0x$edx>>26&0x01))" = 1; then
+          ax_cv_have_sse2_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse3 is supported], [ax_cv_have_sse3_ext],
+      [
+        ax_cv_have_sse3_ext=no
+        if test "$((0x$ecx&0x01))" = 1; then
+          ax_cv_have_sse3_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether ssse3 is supported], [ax_cv_have_ssse3_ext],
+      [
+        ax_cv_have_ssse3_ext=no
+        if test "$((0x$ecx>>9&0x01))" = 1; then
+          ax_cv_have_ssse3_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse4.1 is supported], [ax_cv_have_sse41_ext],
+      [
+        ax_cv_have_sse41_ext=no
+        if test "$((0x$ecx>>19&0x01))" = 1; then
+          ax_cv_have_sse41_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether sse4.2 is supported], [ax_cv_have_sse42_ext],
+      [
+        ax_cv_have_sse42_ext=no
+        if test "$((0x$ecx>>20&0x01))" = 1; then
+          ax_cv_have_sse42_ext=yes
+        fi
+      ])
+
+      AC_CACHE_CHECK([whether avx is supported by processor], [ax_cv_have_avx_cpu_ext],
+      [
+        ax_cv_have_avx_cpu_ext=no
+        if test "$((0x$ecx>>28&0x01))" = 1; then
+          ax_cv_have_avx_cpu_ext=yes
+        fi
+      ])
+
+      if test x"$ax_cv_have_avx_cpu_ext" = x"yes"; then
+        AX_GCC_X86_AVX_XGETBV(0x00000000)
+
+        xgetbv_eax="0"
+        if test x"$ax_cv_gcc_x86_avx_xgetbv_0x00000000" != x"unknown"; then
+          xgetbv_eax=`echo $ax_cv_gcc_x86_avx_xgetbv_0x00000000 | cut -d ":" -f 1`
+        fi
+
+        AC_CACHE_CHECK([whether avx is supported by operating system], [ax_cv_have_avx_ext],
+        [
+          ax_cv_have_avx_ext=no
+
+          if test "$((0x$ecx>>27&0x01))" = 1; then
+            if test "$((0x$xgetbv_eax&0x6))" = 6; then
+              ax_cv_have_avx_ext=yes
+            fi
+          fi
+        ])
+        if test x"$ax_cv_have_avx_ext" = x"no"; then
+          AC_MSG_WARN([Your processor supports AVX, but your operating system doesn't])
+        fi
+      fi
+
+      if test "$ax_cv_have_mmx_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mmmx, ax_cv_support_mmx_ext=yes, [])
+        if test x"$ax_cv_support_mmx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mmmx"
+          AC_DEFINE(HAVE_MMX,,[Support mmx instructions])
+        else
+          AC_MSG_WARN([Your processor supports mmx instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ac_cv_sizeof_long" -eq 8; then
+          SIMD_FLAGS="$SIMD_FLAGS -DARCH_64"
+      fi
+
+      if test "$ax_cv_have_sse_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse, ax_cv_support_sse_ext=yes, [])
+        if test x"$ax_cv_support_sse_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse -DINTEL_SSE"
+          AC_DEFINE(HAVE_SSE,,[Support SSE (Streaming SIMD Extensions) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse2_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse2, ax_cv_support_sse2_ext=yes, [])
+        if test x"$ax_cv_support_sse2_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse2 -DINTEL_SSE2"
+          AC_DEFINE(HAVE_SSE2,,[Support SSE2 (Streaming SIMD Extensions 2) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse2 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse3_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse3, ax_cv_support_sse3_ext=yes, [])
+        if test x"$ax_cv_support_sse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse3 -DINTEL_SSE3"
+          AC_DEFINE(HAVE_SSE3,,[Support SSE3 (Streaming SIMD Extensions 3) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse3 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_ssse3_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mssse3, ax_cv_support_ssse3_ext=yes, [])
+        if test x"$ax_cv_support_ssse3_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mssse3"
+          AC_DEFINE(HAVE_SSSE3,,[Support SSSE3 (Supplemental Streaming SIMD Extensions 3) instructions])
+        else
+          AC_MSG_WARN([Your processor supports ssse3 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse41_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse4.1, ax_cv_support_sse41_ext=yes, [])
+        if test x"$ax_cv_support_sse41_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.1 -DINTEL_SSE4"
+          AC_DEFINE(HAVE_SSE4_1,,[Support SSSE4.1 (Streaming SIMD Extensions 4.1) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse4.1 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_sse42_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-msse4.2, ax_cv_support_sse42_ext=yes, [])
+        if test x"$ax_cv_support_sse42_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -msse4.2 -DINTEL_SSE4"
+          AC_DEFINE(HAVE_SSE4_2,,[Support SSSE4.2 (Streaming SIMD Extensions 4.2) instructions])
+        else
+          AC_MSG_WARN([Your processor supports sse4.2 instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+      if test "$ax_cv_have_avx_ext" = yes; then
+        AX_CHECK_COMPILE_FLAG(-mavx, ax_cv_support_avx_ext=yes, [])
+        if test x"$ax_cv_support_avx_ext" = x"yes"; then
+          SIMD_FLAGS="$SIMD_FLAGS -mavx"
+          AC_DEFINE(HAVE_AVX,,[Support AVX (Advanced Vector Extensions) instructions])
+        else
+          AC_MSG_WARN([Your processor supports avx instructions but not your compiler, can you try another compiler?])
+        fi
+      fi
+
+  ;;
+  esac
+
+  AC_SUBST(SIMD_FLAGS)
+])
diff --git a/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_avx_xgetbv.m4 b/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_avx_xgetbv.m4
new file mode 100644
index 00000000..0624eebc
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_avx_xgetbv.m4
@@ -0,0 +1,79 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_gcc_x86_avx_xgetbv.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_GCC_X86_AVX_XGETBV
+#
+# DESCRIPTION
+#
+#   On later x86 processors with AVX SIMD support, with gcc or a compiler
+#   that has a compatible syntax for inline assembly instructions, run a
+#   small program that executes the xgetbv instruction with input OP. This
+#   can be used to detect if the OS supports AVX instruction usage.
+#
+#   On output, the values of the eax and edx registers are stored as
+#   hexadecimal strings as "eax:edx" in the cache variable
+#   ax_cv_gcc_x86_avx_xgetbv.
+#
+#   If the xgetbv instruction fails (because you are running a
+#   cross-compiler, or because you are not using gcc, or because you are on
+#   a processor that doesn't have this instruction),
+#   ax_cv_gcc_x86_avx_xgetbv_OP is set to the string "unknown".
+#
+#   This macro mainly exists to be used in AX_EXT.
+#
+# LICENSE
+#
+#   Copyright (c) 2013 Michael Petch 
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see .
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 1
+
+AC_DEFUN([AX_GCC_X86_AVX_XGETBV],
+[AC_REQUIRE([AC_PROG_CC])
+AC_LANG_PUSH([C])
+AC_CACHE_CHECK(for x86-AVX xgetbv $1 output, ax_cv_gcc_x86_avx_xgetbv_$1,
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include ], [
+     int op = $1, eax, edx;
+     FILE *f;
+      /* Opcodes for xgetbv */
+      __asm__(".byte 0x0f, 0x01, 0xd0"
+        : "=a" (eax), "=d" (edx)
+        : "c" (op));
+     f = fopen("conftest_xgetbv", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x\n", eax, edx);
+     fclose(f);
+     return 0;
+])],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=`cat conftest_xgetbv`; rm -f conftest_xgetbv],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=unknown; rm -f conftest_xgetbv],
+     [ax_cv_gcc_x86_avx_xgetbv_$1=unknown])])
+AC_LANG_POP([C])
+])
diff --git a/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_cpuid.m4 b/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_cpuid.m4
new file mode 100644
index 00000000..7d46fee0
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ax_gcc_x86_cpuid.m4
@@ -0,0 +1,79 @@
+# ===========================================================================
+#     http://www.gnu.org/software/autoconf-archive/ax_gcc_x86_cpuid.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_GCC_X86_CPUID(OP)
+#
+# DESCRIPTION
+#
+#   On Pentium and later x86 processors, with gcc or a compiler that has a
+#   compatible syntax for inline assembly instructions, run a small program
+#   that executes the cpuid instruction with input OP. This can be used to
+#   detect the CPU type.
+#
+#   On output, the values of the eax, ebx, ecx, and edx registers are stored
+#   as hexadecimal strings as "eax:ebx:ecx:edx" in the cache variable
+#   ax_cv_gcc_x86_cpuid_OP.
+#
+#   If the cpuid instruction fails (because you are running a
+#   cross-compiler, or because you are not using gcc, or because you are on
+#   a processor that doesn't have this instruction), ax_cv_gcc_x86_cpuid_OP
+#   is set to the string "unknown".
+#
+#   This macro mainly exists to be used in AX_GCC_ARCHFLAG.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Steven G. Johnson 
+#   Copyright (c) 2008 Matteo Frigo
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see .
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 7
+
+AC_DEFUN([AX_GCC_X86_CPUID],
+[AC_REQUIRE([AC_PROG_CC])
+AC_LANG_PUSH([C])
+AC_CACHE_CHECK(for x86 cpuid $1 output, ax_cv_gcc_x86_cpuid_$1,
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([#include ], [
+     int op = $1, eax, ebx, ecx, edx;
+     FILE *f;
+      __asm__("cpuid"
+        : "=a" (eax), "=b" (ebx), "=c" (ecx), "=d" (edx)
+        : "a" (op));
+     f = fopen("conftest_cpuid", "w"); if (!f) return 1;
+     fprintf(f, "%x:%x:%x:%x\n", eax, ebx, ecx, edx);
+     fclose(f);
+     return 0;
+])],
+     [ax_cv_gcc_x86_cpuid_$1=`cat conftest_cpuid`; rm -f conftest_cpuid],
+     [ax_cv_gcc_x86_cpuid_$1=unknown; rm -f conftest_cpuid],
+     [ax_cv_gcc_x86_cpuid_$1=unknown])])
+AC_LANG_POP([C])
+])
diff --git a/src/erasure-code/jerasure/jerasure/m4/libtool.m4 b/src/erasure-code/jerasure/jerasure/m4/libtool.m4
new file mode 100644
index 00000000..828104cf
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/libtool.m4
@@ -0,0 +1,8001 @@
+# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
+#
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+#                 Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+m4_define([_LT_COPYING], [dnl
+#   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
+#                 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+#                 Foundation, Inc.
+#   Written by Gordon Matzigkeit, 1996
+#
+#   This file is part of GNU Libtool.
+#
+# GNU Libtool is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# As a special exception to the GNU General Public License,
+# if you distribute this file as part of a program or library that
+# is built using GNU Libtool, you may include this file under the
+# same distribution terms that you use for the rest of that program.
+#
+# GNU Libtool is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GNU Libtool; see the file COPYING.  If not, a copy
+# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
+# obtained by writing to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+])
+
+# serial 57 LT_INIT
+
+
+# LT_PREREQ(VERSION)
+# ------------------
+# Complain and exit if this libtool version is less that VERSION.
+m4_defun([LT_PREREQ],
+[m4_if(m4_version_compare(m4_defn([LT_PACKAGE_VERSION]), [$1]), -1,
+       [m4_default([$3],
+		   [m4_fatal([Libtool version $1 or higher is required],
+		             63)])],
+       [$2])])
+
+
+# _LT_CHECK_BUILDDIR
+# ------------------
+# Complain if the absolute build directory name contains unusual characters
+m4_defun([_LT_CHECK_BUILDDIR],
+[case `pwd` in
+  *\ * | *\	*)
+    AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
+esac
+])
+
+
+# LT_INIT([OPTIONS])
+# ------------------
+AC_DEFUN([LT_INIT],
+[AC_PREREQ([2.58])dnl We use AC_INCLUDES_DEFAULT
+AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
+AC_BEFORE([$0], [LT_LANG])dnl
+AC_BEFORE([$0], [LT_OUTPUT])dnl
+AC_BEFORE([$0], [LTDL_INIT])dnl
+m4_require([_LT_CHECK_BUILDDIR])dnl
+
+dnl Autoconf doesn't catch unexpanded LT_ macros by default:
+m4_pattern_forbid([^_?LT_[A-Z_]+$])dnl
+m4_pattern_allow([^(_LT_EOF|LT_DLGLOBAL|LT_DLLAZY_OR_NOW|LT_MULTI_MODULE)$])dnl
+dnl aclocal doesn't pull ltoptions.m4, ltsugar.m4, or ltversion.m4
+dnl unless we require an AC_DEFUNed macro:
+AC_REQUIRE([LTOPTIONS_VERSION])dnl
+AC_REQUIRE([LTSUGAR_VERSION])dnl
+AC_REQUIRE([LTVERSION_VERSION])dnl
+AC_REQUIRE([LTOBSOLETE_VERSION])dnl
+m4_require([_LT_PROG_LTMAIN])dnl
+
+_LT_SHELL_INIT([SHELL=${CONFIG_SHELL-/bin/sh}])
+
+dnl Parse OPTIONS
+_LT_SET_OPTIONS([$0], [$1])
+
+# This can be used to rebuild libtool when needed
+LIBTOOL_DEPS="$ltmain"
+
+# Always use our own libtool.
+LIBTOOL='$(SHELL) $(top_builddir)/libtool'
+AC_SUBST(LIBTOOL)dnl
+
+_LT_SETUP
+
+# Only expand once:
+m4_define([LT_INIT])
+])# LT_INIT
+
+# Old names:
+AU_ALIAS([AC_PROG_LIBTOOL], [LT_INIT])
+AU_ALIAS([AM_PROG_LIBTOOL], [LT_INIT])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PROG_LIBTOOL], [])
+dnl AC_DEFUN([AM_PROG_LIBTOOL], [])
+
+
+# _LT_CC_BASENAME(CC)
+# -------------------
+# Calculate cc_basename.  Skip known compiler wrappers and cross-prefix.
+m4_defun([_LT_CC_BASENAME],
+[for cc_temp in $1""; do
+  case $cc_temp in
+    compile | *[[\\/]]compile | ccache | *[[\\/]]ccache ) ;;
+    distcc | *[[\\/]]distcc | purify | *[[\\/]]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
+])
+
+
+# _LT_FILEUTILS_DEFAULTS
+# ----------------------
+# It is okay to use these file commands and assume they have been set
+# sensibly after `m4_require([_LT_FILEUTILS_DEFAULTS])'.
+m4_defun([_LT_FILEUTILS_DEFAULTS],
+[: ${CP="cp -f"}
+: ${MV="mv -f"}
+: ${RM="rm -f"}
+])# _LT_FILEUTILS_DEFAULTS
+
+
+# _LT_SETUP
+# ---------
+m4_defun([_LT_SETUP],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+AC_REQUIRE([_LT_PREPARE_SED_QUOTE_VARS])dnl
+AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])dnl
+
+_LT_DECL([], [PATH_SEPARATOR], [1], [The PATH separator for the build system])dnl
+dnl
+_LT_DECL([], [host_alias], [0], [The host system])dnl
+_LT_DECL([], [host], [0])dnl
+_LT_DECL([], [host_os], [0])dnl
+dnl
+_LT_DECL([], [build_alias], [0], [The build system])dnl
+_LT_DECL([], [build], [0])dnl
+_LT_DECL([], [build_os], [0])dnl
+dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+dnl
+AC_REQUIRE([AC_PROG_LN_S])dnl
+test -z "$LN_S" && LN_S="ln -s"
+_LT_DECL([], [LN_S], [1], [Whether we need soft or hard links])dnl
+dnl
+AC_REQUIRE([LT_CMD_MAX_LEN])dnl
+_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
+_LT_DECL([], [exeext], [0], [Executable file suffix (normally "")])dnl
+dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+m4_require([_LT_PATH_CONVERSION_FUNCTIONS])dnl
+m4_require([_LT_CMD_RELOAD])dnl
+m4_require([_LT_CHECK_MAGIC_METHOD])dnl
+m4_require([_LT_CHECK_SHAREDLIB_FROM_LINKLIB])dnl
+m4_require([_LT_CMD_OLD_ARCHIVE])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_WITH_SYSROOT])dnl
+
+_LT_CONFIG_LIBTOOL_INIT([
+# See if we are running on zsh, and set the options which allow our
+# commands through without removal of \ escapes INIT.
+if test -n "\${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+])
+if test -n "${ZSH_VERSION+set}" ; then
+   setopt NO_GLOB_SUBST
+fi
+
+_LT_CHECK_OBJDIR
+
+m4_require([_LT_TAG_COMPILER])dnl
+
+case $host_os in
+aix3*)
+  # AIX sometimes has problems with the GCC collect2 program.  For some
+  # reason, if we set the COLLECT_NAMES environment variable, the problems
+  # vanish in a puff of smoke.
+  if test "X${COLLECT_NAMES+set}" != Xset; then
+    COLLECT_NAMES=
+    export COLLECT_NAMES
+  fi
+  ;;
+esac
+
+# Global variables:
+ofile=libtool
+can_build_shared=yes
+
+# All known linkers require a `.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+
+with_gnu_ld="$lt_cv_prog_gnu_ld"
+
+old_CC="$CC"
+old_CFLAGS="$CFLAGS"
+
+# Set sane defaults for various variables
+test -z "$CC" && CC=cc
+test -z "$LTCC" && LTCC=$CC
+test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
+test -z "$LD" && LD=ld
+test -z "$ac_objext" && ac_objext=o
+
+_LT_CC_BASENAME([$compiler])
+
+# Only perform the check for file, if the check method requires it
+test -z "$MAGIC_CMD" && MAGIC_CMD=file
+case $deplibs_check_method in
+file_magic*)
+  if test "$file_magic_cmd" = '$MAGIC_CMD'; then
+    _LT_PATH_MAGIC
+  fi
+  ;;
+esac
+
+# Use C for the default configuration in the libtool script
+LT_SUPPORTED_TAG([CC])
+_LT_LANG_C_CONFIG
+_LT_LANG_DEFAULT_CONFIG
+_LT_CONFIG_COMMANDS
+])# _LT_SETUP
+
+
+# _LT_PREPARE_SED_QUOTE_VARS
+# --------------------------
+# Define a few sed substitution that help us do robust quoting.
+m4_defun([_LT_PREPARE_SED_QUOTE_VARS],
+[# Backslashify metacharacters that are still active within
+# double-quoted strings.
+sed_quote_subst='s/\([["`$\\]]\)/\\\1/g'
+
+# Same as above, but do not quote variable references.
+double_quote_subst='s/\([["`\\]]\)/\\\1/g'
+
+# Sed substitution to delay expansion of an escaped shell variable in a
+# double_quote_subst'ed string.
+delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
+
+# Sed substitution to delay expansion of an escaped single quote.
+delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
+
+# Sed substitution to avoid accidental globbing in evaled expressions
+no_glob_subst='s/\*/\\\*/g'
+])
+
+# _LT_PROG_LTMAIN
+# ---------------
+# Note that this code is called both from `configure', and `config.status'
+# now that we use AC_CONFIG_COMMANDS to generate libtool.  Notably,
+# `config.status' has no value for ac_aux_dir unless we are using Automake,
+# so we pass a copy along to make sure it has a sensible value anyway.
+m4_defun([_LT_PROG_LTMAIN],
+[m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([ltmain.sh])])dnl
+_LT_CONFIG_LIBTOOL_INIT([ac_aux_dir='$ac_aux_dir'])
+ltmain="$ac_aux_dir/ltmain.sh"
+])# _LT_PROG_LTMAIN
+
+
+## ------------------------------------- ##
+## Accumulate code for creating libtool. ##
+## ------------------------------------- ##
+
+# So that we can recreate a full libtool script including additional
+# tags, we accumulate the chunks of code to send to AC_CONFIG_COMMANDS
+# in macros and then make a single call at the end using the `libtool'
+# label.
+
+
+# _LT_CONFIG_LIBTOOL_INIT([INIT-COMMANDS])
+# ----------------------------------------
+# Register INIT-COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL_INIT],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_INIT],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_INIT])
+
+
+# _LT_CONFIG_LIBTOOL([COMMANDS])
+# ------------------------------
+# Register COMMANDS to be passed to AC_CONFIG_COMMANDS later.
+m4_define([_LT_CONFIG_LIBTOOL],
+[m4_ifval([$1],
+          [m4_append([_LT_OUTPUT_LIBTOOL_COMMANDS],
+                     [$1
+])])])
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS])
+
+
+# _LT_CONFIG_SAVE_COMMANDS([COMMANDS], [INIT_COMMANDS])
+# -----------------------------------------------------
+m4_defun([_LT_CONFIG_SAVE_COMMANDS],
+[_LT_CONFIG_LIBTOOL([$1])
+_LT_CONFIG_LIBTOOL_INIT([$2])
+])
+
+
+# _LT_FORMAT_COMMENT([COMMENT])
+# -----------------------------
+# Add leading comment marks to the start of each line, and a trailing
+# full-stop to the whole comment if one is not present already.
+m4_define([_LT_FORMAT_COMMENT],
+[m4_ifval([$1], [
+m4_bpatsubst([m4_bpatsubst([$1], [^ *], [# ])],
+              [['`$\]], [\\\&])]m4_bmatch([$1], [[!?.]$], [], [.])
+)])
+
+
+
+## ------------------------ ##
+## FIXME: Eliminate VARNAME ##
+## ------------------------ ##
+
+
+# _LT_DECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION], [IS-TAGGED?])
+# -------------------------------------------------------------------
+# CONFIGNAME is the name given to the value in the libtool script.
+# VARNAME is the (base) name used in the configure script.
+# VALUE may be 0, 1 or 2 for a computed quote escaped value based on
+# VARNAME.  Any other value will be used directly.
+m4_define([_LT_DECL],
+[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
+    [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
+	[m4_ifval([$1], [$1], [$2])])
+    lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
+    m4_ifval([$4],
+	[lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
+    lt_dict_add_subkey([lt_decl_dict], [$2],
+	[tagged?], [m4_ifval([$5], [yes], [no])])])
+])
+
+
+# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
+# --------------------------------------------------------
+m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
+
+
+# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_tag_varnames],
+[_lt_decl_filter([tagged?], [yes], $@)])
+
+
+# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
+# ---------------------------------------------------------
+m4_define([_lt_decl_filter],
+[m4_case([$#],
+  [0], [m4_fatal([$0: too few arguments: $#])],
+  [1], [m4_fatal([$0: too few arguments: $#: $1])],
+  [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
+  [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
+  [lt_dict_filter([lt_decl_dict], $@)])[]dnl
+])
+
+
+# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
+# --------------------------------------------------
+m4_define([lt_decl_quote_varnames],
+[_lt_decl_filter([value], [1], $@)])
+
+
+# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_dquote_varnames],
+[_lt_decl_filter([value], [2], $@)])
+
+
+# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
+# ---------------------------------------------------
+m4_define([lt_decl_varnames_tagged],
+[m4_assert([$# <= 2])dnl
+_$0(m4_quote(m4_default([$1], [[, ]])),
+    m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
+    m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
+m4_define([_lt_decl_varnames_tagged],
+[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
+
+
+# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
+# ------------------------------------------------
+m4_define([lt_decl_all_varnames],
+[_$0(m4_quote(m4_default([$1], [[, ]])),
+     m4_if([$2], [],
+	   m4_quote(lt_decl_varnames),
+	m4_quote(m4_shift($@))))[]dnl
+])
+m4_define([_lt_decl_all_varnames],
+[lt_join($@, lt_decl_varnames_tagged([$1],
+			lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
+])
+
+
+# _LT_CONFIG_STATUS_DECLARE([VARNAME])
+# ------------------------------------
+# Quote a variable value, and forward it to `config.status' so that its
+# declaration there will have the same value as in `configure'.  VARNAME
+# must have a single quote delimited value for this to work.
+m4_define([_LT_CONFIG_STATUS_DECLARE],
+[$1='`$ECHO "$][$1" | $SED "$delay_single_quote_subst"`'])
+
+
+# _LT_CONFIG_STATUS_DECLARATIONS
+# ------------------------------
+# We delimit libtool config variables with single quotes, so when
+# we write them to config.status, we have to be sure to quote all
+# embedded single quotes properly.  In configure, this macro expands
+# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
+#
+#    ='`$ECHO "$" | $SED "$delay_single_quote_subst"`'
+m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
+    [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAGS
+# ----------------
+# Output comment and list of tags supported by the script
+m4_defun([_LT_LIBTOOL_TAGS],
+[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
+available_tags="_LT_TAGS"dnl
+])
+
+
+# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
+# -----------------------------------
+# Extract the dictionary values for VARNAME (optionally with TAG) and
+# expand to a commented shell variable setting:
+#
+#    # Some comment about what VAR is for.
+#    visible_name=$lt_internal_name
+m4_define([_LT_LIBTOOL_DECLARE],
+[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
+					   [description])))[]dnl
+m4_pushdef([_libtool_name],
+    m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
+m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
+    [0], [_libtool_name=[$]$1],
+    [1], [_libtool_name=$lt_[]$1],
+    [2], [_libtool_name=$lt_[]$1],
+    [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
+m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
+])
+
+
+# _LT_LIBTOOL_CONFIG_VARS
+# -----------------------
+# Produce commented declarations of non-tagged libtool config variables
+# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
+# script.  Tagged libtool config variables (even for the LIBTOOL CONFIG
+# section) are produced by _LT_LIBTOOL_TAG_VARS.
+m4_defun([_LT_LIBTOOL_CONFIG_VARS],
+[m4_foreach([_lt_var],
+    m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
+
+
+# _LT_LIBTOOL_TAG_VARS(TAG)
+# -------------------------
+m4_define([_LT_LIBTOOL_TAG_VARS],
+[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
+    [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
+
+
+# _LT_TAGVAR(VARNAME, [TAGNAME])
+# ------------------------------
+m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
+
+
+# _LT_CONFIG_COMMANDS
+# -------------------
+# Send accumulated output to $CONFIG_STATUS.  Thanks to the lists of
+# variables for single and double quote escaping we saved from calls
+# to _LT_DECL, we can put quote escaped variables declarations
+# into `config.status', and then the shell code to quote escape them in
+# for loops in `config.status'.  Finally, any additional code accumulated
+# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
+m4_defun([_LT_CONFIG_COMMANDS],
+[AC_PROVIDE_IFELSE([LT_OUTPUT],
+	dnl If the libtool generation code has been placed in $CONFIG_LT,
+	dnl instead of duplicating it all over again into config.status,
+	dnl then we will have config.status run $CONFIG_LT later, so it
+	dnl needs to know what name is stored there:
+        [AC_CONFIG_COMMANDS([libtool],
+            [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
+    dnl If the libtool generation code is destined for config.status,
+    dnl expand the accumulated commands and init code now:
+    [AC_CONFIG_COMMANDS([libtool],
+        [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
+])#_LT_CONFIG_COMMANDS
+
+
+# Initialize.
+m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
+[
+
+# The HP-UX ksh and POSIX shell print the target directory to stdout
+# if CDPATH is set.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+sed_quote_subst='$sed_quote_subst'
+double_quote_subst='$double_quote_subst'
+delay_variable_subst='$delay_variable_subst'
+_LT_CONFIG_STATUS_DECLARATIONS
+LTCC='$LTCC'
+LTCFLAGS='$LTCFLAGS'
+compiler='$compiler_DEFAULT'
+
+# A function that is used when there is no print builtin or printf.
+func_fallback_echo ()
+{
+  eval 'cat <<_LTECHO_EOF
+\$[]1
+_LTECHO_EOF'
+}
+
+# Quote evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_quote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+# Double-quote double-evaled strings.
+for var in lt_decl_all_varnames([[ \
+]], lt_decl_dquote_varnames); do
+    case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
+    *[[\\\\\\\`\\"\\\$]]*)
+      eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
+      ;;
+    *)
+      eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
+      ;;
+    esac
+done
+
+_LT_OUTPUT_LIBTOOL_INIT
+])
+
+# _LT_GENERATED_FILE_INIT(FILE, [COMMENT])
+# ------------------------------------
+# Generate a child script FILE with all initialization necessary to
+# reuse the environment learned by the parent script, and make the
+# file executable.  If COMMENT is supplied, it is inserted after the
+# `#!' sequence but before initialization text begins.  After this
+# macro, additional text can be appended to FILE to form the body of
+# the child script.  The macro ends with non-zero status if the
+# file could not be fully written (such as if the disk is full).
+m4_ifdef([AS_INIT_GENERATED],
+[m4_defun([_LT_GENERATED_FILE_INIT],[AS_INIT_GENERATED($@)])],
+[m4_defun([_LT_GENERATED_FILE_INIT],
+[m4_require([AS_PREPARE])]dnl
+[m4_pushdef([AS_MESSAGE_LOG_FD])]dnl
+[lt_write_fail=0
+cat >$1 <<_ASEOF || lt_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+$2
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$1 <<\_ASEOF || lt_write_fail=1
+AS_SHELL_SANITIZE
+_AS_PREPARE
+exec AS_MESSAGE_FD>&1
+_ASEOF
+test $lt_write_fail = 0 && chmod +x $1[]dnl
+m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT
+
+# LT_OUTPUT
+# ---------
+# This macro allows early generation of the libtool script (before
+# AC_OUTPUT is called), incase it is used in configure for compilation
+# tests.
+AC_DEFUN([LT_OUTPUT],
+[: ${CONFIG_LT=./config.lt}
+AC_MSG_NOTICE([creating $CONFIG_LT])
+_LT_GENERATED_FILE_INIT(["$CONFIG_LT"],
+[# Run this file to recreate a libtool stub with the current configuration.])
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+lt_cl_silent=false
+exec AS_MESSAGE_LOG_FD>>config.log
+{
+  echo
+  AS_BOX([Running $as_me.])
+} >&AS_MESSAGE_LOG_FD
+
+lt_cl_help="\
+\`$as_me' creates a local libtool stub from the current configuration,
+for use in further configure time tests before the real libtool is
+generated.
+
+Usage: $[0] [[OPTIONS]]
+
+  -h, --help      print this help, then exit
+  -V, --version   print version number, then exit
+  -q, --quiet     do not print progress messages
+  -d, --debug     don't remove temporary files
+
+Report bugs to ."
+
+lt_cl_version="\
+m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
+m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
+configured by $[0], generated by m4_PACKAGE_STRING.
+
+Copyright (C) 2011 Free Software Foundation, Inc.
+This config.lt script is free software; the Free Software Foundation
+gives unlimited permision to copy, distribute and modify it."
+
+while test $[#] != 0
+do
+  case $[1] in
+    --version | --v* | -V )
+      echo "$lt_cl_version"; exit 0 ;;
+    --help | --h* | -h )
+      echo "$lt_cl_help"; exit 0 ;;
+    --debug | --d* | -d )
+      debug=: ;;
+    --quiet | --q* | --silent | --s* | -q )
+      lt_cl_silent=: ;;
+
+    -*) AC_MSG_ERROR([unrecognized option: $[1]
+Try \`$[0] --help' for more information.]) ;;
+
+    *) AC_MSG_ERROR([unrecognized argument: $[1]
+Try \`$[0] --help' for more information.]) ;;
+  esac
+  shift
+done
+
+if $lt_cl_silent; then
+  exec AS_MESSAGE_FD>/dev/null
+fi
+_LTEOF
+
+cat >>"$CONFIG_LT" <<_LTEOF
+_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
+_LTEOF
+
+cat >>"$CONFIG_LT" <<\_LTEOF
+AC_MSG_NOTICE([creating $ofile])
+_LT_OUTPUT_LIBTOOL_COMMANDS
+AS_EXIT(0)
+_LTEOF
+chmod +x "$CONFIG_LT"
+
+# configure is writing to config.log, but config.lt does its own redirection,
+# appending to config.log, which fails on DOS, as config.log is still kept
+# open by configure.  Here we exec the FD to /dev/null, effectively closing
+# config.log, so it can be properly (re)opened and appended to by config.lt.
+lt_cl_success=:
+test "$silent" = yes &&
+  lt_config_lt_args="$lt_config_lt_args --quiet"
+exec AS_MESSAGE_LOG_FD>/dev/null
+$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
+exec AS_MESSAGE_LOG_FD>>config.log
+$lt_cl_success || AS_EXIT(1)
+])# LT_OUTPUT
+
+
+# _LT_CONFIG(TAG)
+# ---------------
+# If TAG is the built-in tag, create an initial libtool script with a
+# default configuration from the untagged config vars.  Otherwise add code
+# to config.status for appending the configuration named by TAG from the
+# matching tagged config vars.
+m4_defun([_LT_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_CONFIG_SAVE_COMMANDS([
+  m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
+  m4_if(_LT_TAG, [C], [
+    # See if we are running on zsh, and set the options which allow our
+    # commands through without removal of \ escapes.
+    if test -n "${ZSH_VERSION+set}" ; then
+      setopt NO_GLOB_SUBST
+    fi
+
+    cfgfile="${ofile}T"
+    trap "$RM \"$cfgfile\"; exit 1" 1 2 15
+    $RM "$cfgfile"
+
+    cat <<_LT_EOF >> "$cfgfile"
+#! $SHELL
+
+# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
+# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
+# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
+# NOTE: Changes made to this file will be lost: look at ltmain.sh.
+#
+_LT_COPYING
+_LT_LIBTOOL_TAGS
+
+# ### BEGIN LIBTOOL CONFIG
+_LT_LIBTOOL_CONFIG_VARS
+_LT_LIBTOOL_TAG_VARS
+# ### END LIBTOOL CONFIG
+
+_LT_EOF
+
+  case $host_os in
+  aix3*)
+    cat <<\_LT_EOF >> "$cfgfile"
+# AIX sometimes has problems with the GCC collect2 program.  For some
+# reason, if we set the COLLECT_NAMES environment variable, the problems
+# vanish in a puff of smoke.
+if test "X${COLLECT_NAMES+set}" != Xset; then
+  COLLECT_NAMES=
+  export COLLECT_NAMES
+fi
+_LT_EOF
+    ;;
+  esac
+
+  _LT_PROG_LTMAIN
+
+  # We use sed instead of cat because bash on DJGPP gets confused if
+  # if finds mixed CR/LF and LF-only lines.  Since sed operates in
+  # text mode, it properly converts lines to CR/LF.  This bash problem
+  # is reportedly fixed, but why not run on old versions too?
+  sed '$q' "$ltmain" >> "$cfgfile" \
+     || (rm -f "$cfgfile"; exit 1)
+
+  _LT_PROG_REPLACE_SHELLFNS
+
+   mv -f "$cfgfile" "$ofile" ||
+    (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
+  chmod +x "$ofile"
+],
+[cat <<_LT_EOF >> "$ofile"
+
+dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
+dnl in a comment (ie after a #).
+# ### BEGIN LIBTOOL TAG CONFIG: $1
+_LT_LIBTOOL_TAG_VARS(_LT_TAG)
+# ### END LIBTOOL TAG CONFIG: $1
+_LT_EOF
+])dnl /m4_if
+],
+[m4_if([$1], [], [
+    PACKAGE='$PACKAGE'
+    VERSION='$VERSION'
+    TIMESTAMP='$TIMESTAMP'
+    RM='$RM'
+    ofile='$ofile'], [])
+])dnl /_LT_CONFIG_SAVE_COMMANDS
+])# _LT_CONFIG
+
+
+# LT_SUPPORTED_TAG(TAG)
+# ---------------------
+# Trace this macro to discover what tags are supported by the libtool
+# --tag option, using:
+#    autoconf --trace 'LT_SUPPORTED_TAG:$1'
+AC_DEFUN([LT_SUPPORTED_TAG], [])
+
+
+# C support is built-in for now
+m4_define([_LT_LANG_C_enabled], [])
+m4_define([_LT_TAGS], [])
+
+
+# LT_LANG(LANG)
+# -------------
+# Enable libtool support for the given language if not already enabled.
+AC_DEFUN([LT_LANG],
+[AC_BEFORE([$0], [LT_OUTPUT])dnl
+m4_case([$1],
+  [C],			[_LT_LANG(C)],
+  [C++],		[_LT_LANG(CXX)],
+  [Go],			[_LT_LANG(GO)],
+  [Java],		[_LT_LANG(GCJ)],
+  [Fortran 77],		[_LT_LANG(F77)],
+  [Fortran],		[_LT_LANG(FC)],
+  [Windows Resource],	[_LT_LANG(RC)],
+  [m4_ifdef([_LT_LANG_]$1[_CONFIG],
+    [_LT_LANG($1)],
+    [m4_fatal([$0: unsupported language: "$1"])])])dnl
+])# LT_LANG
+
+
+# _LT_LANG(LANGNAME)
+# ------------------
+m4_defun([_LT_LANG],
+[m4_ifdef([_LT_LANG_]$1[_enabled], [],
+  [LT_SUPPORTED_TAG([$1])dnl
+  m4_append([_LT_TAGS], [$1 ])dnl
+  m4_define([_LT_LANG_]$1[_enabled], [])dnl
+  _LT_LANG_$1_CONFIG($1)])dnl
+])# _LT_LANG
+
+
+m4_ifndef([AC_PROG_GO], [
+############################################################
+# NOTE: This macro has been submitted for inclusion into   #
+#  GNU Autoconf as AC_PROG_GO.  When it is available in    #
+#  a released version of Autoconf we should remove this    #
+#  macro and use it instead.                               #
+############################################################
+m4_defun([AC_PROG_GO],
+[AC_LANG_PUSH(Go)dnl
+AC_ARG_VAR([GOC],     [Go compiler command])dnl
+AC_ARG_VAR([GOFLAGS], [Go compiler flags])dnl
+_AC_ARG_VAR_LDFLAGS()dnl
+AC_CHECK_TOOL(GOC, gccgo)
+if test -z "$GOC"; then
+  if test -n "$ac_tool_prefix"; then
+    AC_CHECK_PROG(GOC, [${ac_tool_prefix}gccgo], [${ac_tool_prefix}gccgo])
+  fi
+fi
+if test -z "$GOC"; then
+  AC_CHECK_PROG(GOC, gccgo, gccgo, false)
+fi
+])#m4_defun
+])#m4_ifndef
+
+
+# _LT_LANG_DEFAULT_CONFIG
+# -----------------------
+m4_defun([_LT_LANG_DEFAULT_CONFIG],
+[AC_PROVIDE_IFELSE([AC_PROG_CXX],
+  [LT_LANG(CXX)],
+  [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_F77],
+  [LT_LANG(F77)],
+  [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
+
+AC_PROVIDE_IFELSE([AC_PROG_FC],
+  [LT_LANG(FC)],
+  [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
+
+dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
+dnl pulling things in needlessly.
+AC_PROVIDE_IFELSE([AC_PROG_GCJ],
+  [LT_LANG(GCJ)],
+  [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
+    [LT_LANG(GCJ)],
+    [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
+      [LT_LANG(GCJ)],
+      [m4_ifdef([AC_PROG_GCJ],
+	[m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([A][M_PROG_GCJ],
+	[m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
+       m4_ifdef([LT_PROG_GCJ],
+	[m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
+
+AC_PROVIDE_IFELSE([AC_PROG_GO],
+  [LT_LANG(GO)],
+  [m4_define([AC_PROG_GO], defn([AC_PROG_GO])[LT_LANG(GO)])])
+
+AC_PROVIDE_IFELSE([LT_PROG_RC],
+  [LT_LANG(RC)],
+  [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
+])# _LT_LANG_DEFAULT_CONFIG
+
+# Obsolete macros:
+AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
+AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
+AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
+AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
+AU_DEFUN([AC_LIBTOOL_RC], [LT_LANG(Windows Resource)])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
+dnl AC_DEFUN([AC_LIBTOOL_F77], [])
+dnl AC_DEFUN([AC_LIBTOOL_FC], [])
+dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
+dnl AC_DEFUN([AC_LIBTOOL_RC], [])
+
+
+# _LT_TAG_COMPILER
+# ----------------
+m4_defun([_LT_TAG_COMPILER],
+[AC_REQUIRE([AC_PROG_CC])dnl
+
+_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
+_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
+_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
+_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
+
+# If no C compiler was specified, use CC.
+LTCC=${LTCC-"$CC"}
+
+# If no C compiler flags were specified, use CFLAGS.
+LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
+
+# Allow CC to be a program name with arguments.
+compiler=$CC
+])# _LT_TAG_COMPILER
+
+
+# _LT_COMPILER_BOILERPLATE
+# ------------------------
+# Check for compiler boilerplate output or warnings with
+# the simple compiler test code.
+m4_defun([_LT_COMPILER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_compile_test_code" >conftest.$ac_ext
+eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_compiler_boilerplate=`cat conftest.err`
+$RM conftest*
+])# _LT_COMPILER_BOILERPLATE
+
+
+# _LT_LINKER_BOILERPLATE
+# ----------------------
+# Check for linker boilerplate output or warnings with
+# the simple link test code.
+m4_defun([_LT_LINKER_BOILERPLATE],
+[m4_require([_LT_DECL_SED])dnl
+ac_outfile=conftest.$ac_objext
+echo "$lt_simple_link_test_code" >conftest.$ac_ext
+eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
+_lt_linker_boilerplate=`cat conftest.err`
+$RM -r conftest*
+])# _LT_LINKER_BOILERPLATE
+
+# _LT_REQUIRED_DARWIN_CHECKS
+# -------------------------
+m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
+  case $host_os in
+    rhapsody* | darwin*)
+    AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
+    AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
+    AC_CHECK_TOOL([LIPO], [lipo], [:])
+    AC_CHECK_TOOL([OTOOL], [otool], [:])
+    AC_CHECK_TOOL([OTOOL64], [otool64], [:])
+    _LT_DECL([], [DSYMUTIL], [1],
+      [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
+    _LT_DECL([], [NMEDIT], [1],
+      [Tool to change global to local symbols on Mac OS X])
+    _LT_DECL([], [LIPO], [1],
+      [Tool to manipulate fat objects and archives on Mac OS X])
+    _LT_DECL([], [OTOOL], [1],
+      [ldd/readelf like tool for Mach-O binaries on Mac OS X])
+    _LT_DECL([], [OTOOL64], [1],
+      [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
+
+    AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
+      [lt_cv_apple_cc_single_mod=no
+      if test -z "${LT_MULTI_MODULE}"; then
+	# By default we will add the -single_module flag. You can override
+	# by either setting the environment variable LT_MULTI_MODULE
+	# non-empty at configure time, or by adding -multi_module to the
+	# link flags.
+	rm -rf libconftest.dylib*
+	echo "int foo(void){return 1;}" > conftest.c
+	echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+-dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
+	$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
+	  -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
+        _lt_result=$?
+	# If there is a non-empty error log, and "single_module"
+	# appears in it, assume the flag caused a linker warning
+        if test -s conftest.err && $GREP single_module conftest.err; then
+	  cat conftest.err >&AS_MESSAGE_LOG_FD
+	# Otherwise, if the output was created with a 0 exit code from
+	# the compiler, it worked.
+	elif test -f libconftest.dylib && test $_lt_result -eq 0; then
+	  lt_cv_apple_cc_single_mod=yes
+	else
+	  cat conftest.err >&AS_MESSAGE_LOG_FD
+	fi
+	rm -rf libconftest.dylib*
+	rm -f conftest.*
+      fi])
+
+    AC_CACHE_CHECK([for -exported_symbols_list linker flag],
+      [lt_cv_ld_exported_symbols_list],
+      [lt_cv_ld_exported_symbols_list=no
+      save_LDFLAGS=$LDFLAGS
+      echo "_main" > conftest.sym
+      LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
+      AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+	[lt_cv_ld_exported_symbols_list=yes],
+	[lt_cv_ld_exported_symbols_list=no])
+	LDFLAGS="$save_LDFLAGS"
+    ])
+
+    AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load],
+      [lt_cv_ld_force_load=no
+      cat > conftest.c << _LT_EOF
+int forced_loaded() { return 2;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
+      echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+      $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+      echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
+      $RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
+      cat > conftest.c << _LT_EOF
+int main() { return 0;}
+_LT_EOF
+      echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
+      $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
+      _lt_result=$?
+      if test -s conftest.err && $GREP force_load conftest.err; then
+	cat conftest.err >&AS_MESSAGE_LOG_FD
+      elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
+	lt_cv_ld_force_load=yes
+      else
+	cat conftest.err >&AS_MESSAGE_LOG_FD
+      fi
+        rm -f conftest.err libconftest.a conftest conftest.c
+        rm -rf conftest.dSYM
+    ])
+    case $host_os in
+    rhapsody* | darwin1.[[012]])
+      _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
+    darwin1.*)
+      _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+    darwin*) # darwin 5.x on
+      # if running on 10.5 or later, the deployment target defaults
+      # to the OS version, if on x86, and 10.4, the deployment
+      # target defaults to 10.4. Don't you love it?
+      case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
+	10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+	10.[[012]]*)
+	  _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
+	10.*)
+	  _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
+      esac
+    ;;
+  esac
+    if test "$lt_cv_apple_cc_single_mod" = "yes"; then
+      _lt_dar_single_mod='$single_module'
+    fi
+    if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
+      _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
+    else
+      _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
+    fi
+    if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
+      _lt_dsymutil='~$DSYMUTIL $lib || :'
+    else
+      _lt_dsymutil=
+    fi
+    ;;
+  esac
+])
+
+
+# _LT_DARWIN_LINKER_FEATURES([TAG])
+# ---------------------------------
+# Checks for linker and compiler features on darwin
+m4_defun([_LT_DARWIN_LINKER_FEATURES],
+[
+  m4_require([_LT_REQUIRED_DARWIN_CHECKS])
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_automatic, $1)=yes
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  if test "$lt_cv_ld_force_load" = "yes"; then
+    _LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
+    m4_case([$1], [F77], [_LT_TAGVAR(compiler_needs_object, $1)=yes],
+                  [FC],  [_LT_TAGVAR(compiler_needs_object, $1)=yes])
+  else
+    _LT_TAGVAR(whole_archive_flag_spec, $1)=''
+  fi
+  _LT_TAGVAR(link_all_deplibs, $1)=yes
+  _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
+  case $cc_basename in
+     ifort*) _lt_dar_can_shared=yes ;;
+     *) _lt_dar_can_shared=$GCC ;;
+  esac
+  if test "$_lt_dar_can_shared" = "yes"; then
+    output_verbose_link_cmd=func_echo_all
+    _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
+    _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
+    _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
+    _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
+    m4_if([$1], [CXX],
+[   if test "$lt_cv_apple_cc_single_mod" != "yes"; then
+      _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
+      _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
+    fi
+],[])
+  else
+  _LT_TAGVAR(ld_shlibs, $1)=no
+  fi
+])
+
+# _LT_SYS_MODULE_PATH_AIX([TAGNAME])
+# ----------------------------------
+# Links a minimal program and checks the executable
+# for the system default hardcoded library path. In most cases,
+# this is /usr/lib:/lib, but when the MPI compilers are used
+# the location of the communication and MPI libs are included too.
+# If we don't find anything, use the default library path according
+# to the aix ld manual.
+# Store the results from the different compilers for each TAGNAME.
+# Allow to override them for all tags through lt_cv_aix_libpath.
+m4_defun([_LT_SYS_MODULE_PATH_AIX],
+[m4_require([_LT_DECL_SED])dnl
+if test "${lt_cv_aix_libpath+set}" = set; then
+  aix_libpath=$lt_cv_aix_libpath
+else
+  AC_CACHE_VAL([_LT_TAGVAR([lt_cv_aix_libpath_], [$1])],
+  [AC_LINK_IFELSE([AC_LANG_PROGRAM],[
+  lt_aix_libpath_sed='[
+      /Import File Strings/,/^$/ {
+	  /^0/ {
+	      s/^0  *\([^ ]*\) *$/\1/
+	      p
+	  }
+      }]'
+  _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  # Check for a 64-bit object if we didn't find anything.
+  if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
+    _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
+  fi],[])
+  if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
+    _LT_TAGVAR([lt_cv_aix_libpath_], [$1])="/usr/lib:/lib"
+  fi
+  ])
+  aix_libpath=$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])
+fi
+])# _LT_SYS_MODULE_PATH_AIX
+
+
+# _LT_SHELL_INIT(ARG)
+# -------------------
+m4_define([_LT_SHELL_INIT],
+[m4_divert_text([M4SH-INIT], [$1
+])])# _LT_SHELL_INIT
+
+
+
+# _LT_PROG_ECHO_BACKSLASH
+# -----------------------
+# Find how we can fake an echo command that does not interpret backslash.
+# In particular, with Autoconf 2.60 or later we add some code to the start
+# of the generated configure script which will find a shell with a builtin
+# printf (which we can use as an echo command).
+m4_defun([_LT_PROG_ECHO_BACKSLASH],
+[ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+
+AC_MSG_CHECKING([how to print strings])
+# Test print first, because it will be a builtin if present.
+if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \
+   test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='print -r --'
+elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
+  ECHO='printf %s\n'
+else
+  # Use this function as a fallback that always works.
+  func_fallback_echo ()
+  {
+    eval 'cat <<_LTECHO_EOF
+$[]1
+_LTECHO_EOF'
+  }
+  ECHO='func_fallback_echo'
+fi
+
+# func_echo_all arg...
+# Invoke $ECHO with all args, space-separated.
+func_echo_all ()
+{
+    $ECHO "$*" 
+}
+
+case "$ECHO" in
+  printf*) AC_MSG_RESULT([printf]) ;;
+  print*) AC_MSG_RESULT([print -r]) ;;
+  *) AC_MSG_RESULT([cat]) ;;
+esac
+
+m4_ifdef([_AS_DETECT_SUGGESTED],
+[_AS_DETECT_SUGGESTED([
+  test -n "${ZSH_VERSION+set}${BASH_VERSION+set}" || (
+    ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
+    ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
+    PATH=/empty FPATH=/empty; export PATH FPATH
+    test "X`printf %s $ECHO`" = "X$ECHO" \
+      || test "X`print -r -- $ECHO`" = "X$ECHO" )])])
+
+_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
+_LT_DECL([], [ECHO], [1], [An echo program that protects backslashes])
+])# _LT_PROG_ECHO_BACKSLASH
+
+
+# _LT_WITH_SYSROOT
+# ----------------
+AC_DEFUN([_LT_WITH_SYSROOT],
+[AC_MSG_CHECKING([for sysroot])
+AC_ARG_WITH([sysroot],
+[  --with-sysroot[=DIR] Search for dependent libraries within DIR
+                        (or the compiler's sysroot if not specified).],
+[], [with_sysroot=no])
+
+dnl lt_sysroot will always be passed unquoted.  We quote it here
+dnl in case the user passed a directory name.
+lt_sysroot=
+case ${with_sysroot} in #(
+ yes)
+   if test "$GCC" = yes; then
+     lt_sysroot=`$CC --print-sysroot 2>/dev/null`
+   fi
+   ;; #(
+ /*)
+   lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
+   ;; #(
+ no|'')
+   ;; #(
+ *)
+   AC_MSG_RESULT([${with_sysroot}])
+   AC_MSG_ERROR([The sysroot must be an absolute path.])
+   ;;
+esac
+
+ AC_MSG_RESULT([${lt_sysroot:-no}])
+_LT_DECL([], [lt_sysroot], [0], [The root where to search for ]dnl
+[dependent libraries, and in which our libraries should be installed.])])
+
+# _LT_ENABLE_LOCK
+# ---------------
+m4_defun([_LT_ENABLE_LOCK],
+[AC_ARG_ENABLE([libtool-lock],
+  [AS_HELP_STRING([--disable-libtool-lock],
+    [avoid locking (might break parallel builds)])])
+test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
+
+# Some flags need to be propagated to the compiler or linker for good
+# libtool support.
+case $host in
+ia64-*-hpux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.$ac_objext` in
+      *ELF-32*)
+	HPUX_IA64_MODE="32"
+	;;
+      *ELF-64*)
+	HPUX_IA64_MODE="64"
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+*-*-irix6*)
+  # Find out which ABI we are using.
+  echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    if test "$lt_cv_prog_gnu_ld" = yes; then
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -melf32bsmip"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -melf32bmipn32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -melf64bmip"
+	;;
+      esac
+    else
+      case `/usr/bin/file conftest.$ac_objext` in
+	*32-bit*)
+	  LD="${LD-ld} -32"
+	  ;;
+	*N32*)
+	  LD="${LD-ld} -n32"
+	  ;;
+	*64-bit*)
+	  LD="${LD-ld} -64"
+	  ;;
+      esac
+    fi
+  fi
+  rm -rf conftest*
+  ;;
+
+x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
+s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+      *32-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_i386_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_i386"
+	    ;;
+	  ppc64-*linux*|powerpc64-*linux*)
+	    LD="${LD-ld} -m elf32ppclinux"
+	    ;;
+	  s390x-*linux*)
+	    LD="${LD-ld} -m elf_s390"
+	    ;;
+	  sparc64-*linux*)
+	    LD="${LD-ld} -m elf32_sparc"
+	    ;;
+	esac
+	;;
+      *64-bit*)
+	case $host in
+	  x86_64-*kfreebsd*-gnu)
+	    LD="${LD-ld} -m elf_x86_64_fbsd"
+	    ;;
+	  x86_64-*linux*)
+	    LD="${LD-ld} -m elf_x86_64"
+	    ;;
+	  ppc*-*linux*|powerpc*-*linux*)
+	    LD="${LD-ld} -m elf64ppc"
+	    ;;
+	  s390*-*linux*|s390*-*tpf*)
+	    LD="${LD-ld} -m elf64_s390"
+	    ;;
+	  sparc*-*linux*)
+	    LD="${LD-ld} -m elf64_sparc"
+	    ;;
+	esac
+	;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+
+*-*-sco3.2v5*)
+  # On SCO OpenServer 5, we need -belf to get full-featured binaries.
+  SAVE_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -belf"
+  AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
+    [AC_LANG_PUSH(C)
+     AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
+     AC_LANG_POP])
+  if test x"$lt_cv_cc_needs_belf" != x"yes"; then
+    # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
+    CFLAGS="$SAVE_CFLAGS"
+  fi
+  ;;
+*-*solaris*)
+  # Find out which ABI we are using.
+  echo 'int i;' > conftest.$ac_ext
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.o` in
+    *64-bit*)
+      case $lt_cv_prog_gnu_ld in
+      yes*)
+        case $host in
+        i?86-*-solaris*)
+          LD="${LD-ld} -m elf_x86_64"
+          ;;
+        sparc*-*-solaris*)
+          LD="${LD-ld} -m elf64_sparc"
+          ;;
+        esac
+        # GNU ld 2.21 introduced _sol2 emulations.  Use them if available.
+        if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
+          LD="${LD-ld}_sol2"
+        fi
+        ;;
+      *)
+	if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
+	  LD="${LD-ld} -64"
+	fi
+	;;
+      esac
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+need_locks="$enable_libtool_lock"
+])# _LT_ENABLE_LOCK
+
+
+# _LT_PROG_AR
+# -----------
+m4_defun([_LT_PROG_AR],
+[AC_CHECK_TOOLS(AR, [ar], false)
+: ${AR=ar}
+: ${AR_FLAGS=cru}
+_LT_DECL([], [AR], [1], [The archiver])
+_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
+
+AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file],
+  [lt_cv_ar_at_file=no
+   AC_COMPILE_IFELSE([AC_LANG_PROGRAM],
+     [echo conftest.$ac_objext > conftest.lst
+      lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&AS_MESSAGE_LOG_FD'
+      AC_TRY_EVAL([lt_ar_try])
+      if test "$ac_status" -eq 0; then
+	# Ensure the archiver fails upon bogus file names.
+	rm -f conftest.$ac_objext libconftest.a
+	AC_TRY_EVAL([lt_ar_try])
+	if test "$ac_status" -ne 0; then
+          lt_cv_ar_at_file=@
+        fi
+      fi
+      rm -f conftest.* libconftest.a
+     ])
+  ])
+
+if test "x$lt_cv_ar_at_file" = xno; then
+  archiver_list_spec=
+else
+  archiver_list_spec=$lt_cv_ar_at_file
+fi
+_LT_DECL([], [archiver_list_spec], [1],
+  [How to feed a file listing to the archiver])
+])# _LT_PROG_AR
+
+
+# _LT_CMD_OLD_ARCHIVE
+# -------------------
+m4_defun([_LT_CMD_OLD_ARCHIVE],
+[_LT_PROG_AR
+
+AC_CHECK_TOOL(STRIP, strip, :)
+test -z "$STRIP" && STRIP=:
+_LT_DECL([], [STRIP], [1], [A symbol stripping program])
+
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+test -z "$RANLIB" && RANLIB=:
+_LT_DECL([], [RANLIB], [1],
+    [Commands used to install an old-style archive])
+
+# Determine commands to create old-style static archives.
+old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
+old_postinstall_cmds='chmod 644 $oldlib'
+old_postuninstall_cmds=
+
+if test -n "$RANLIB"; then
+  case $host_os in
+  openbsd*)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
+    ;;
+  *)
+    old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
+    ;;
+  esac
+  old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
+fi
+
+case $host_os in
+  darwin*)
+    lock_old_archive_extraction=yes ;;
+  *)
+    lock_old_archive_extraction=no ;;
+esac
+_LT_DECL([], [old_postinstall_cmds], [2])
+_LT_DECL([], [old_postuninstall_cmds], [2])
+_LT_TAGDECL([], [old_archive_cmds], [2],
+    [Commands used to build an old-style archive])
+_LT_DECL([], [lock_old_archive_extraction], [0],
+    [Whether to use a lock for old archive extraction])
+])# _LT_CMD_OLD_ARCHIVE
+
+
+# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#		[OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------------------
+# Check whether the given compiler option works
+AC_DEFUN([_LT_COMPILER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+   lt_compiler_flag="$3"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   # The option is referenced via a variable to avoid confusing sed.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>conftest.err)
+   ac_status=$?
+   cat conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s "$ac_outfile"; then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings other than the usual output.
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
+     $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+     if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
+       $2=yes
+     fi
+   fi
+   $RM conftest*
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$5], , :, [$5])
+else
+    m4_if([$6], , :, [$6])
+fi
+])# _LT_COMPILER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
+
+
+# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
+#                  [ACTION-SUCCESS], [ACTION-FAILURE])
+# ----------------------------------------------------
+# Check whether the given linker option works
+AC_DEFUN([_LT_LINKER_OPTION],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_SED])dnl
+AC_CACHE_CHECK([$1], [$2],
+  [$2=no
+   save_LDFLAGS="$LDFLAGS"
+   LDFLAGS="$LDFLAGS $3"
+   echo "$lt_simple_link_test_code" > conftest.$ac_ext
+   if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
+     # The linker can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     if test -s conftest.err; then
+       # Append any errors to the config.log.
+       cat conftest.err 1>&AS_MESSAGE_LOG_FD
+       $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
+       $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
+       if diff conftest.exp conftest.er2 >/dev/null; then
+         $2=yes
+       fi
+     else
+       $2=yes
+     fi
+   fi
+   $RM -r conftest*
+   LDFLAGS="$save_LDFLAGS"
+])
+
+if test x"[$]$2" = xyes; then
+    m4_if([$4], , :, [$4])
+else
+    m4_if([$5], , :, [$5])
+fi
+])# _LT_LINKER_OPTION
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
+
+
+# LT_CMD_MAX_LEN
+#---------------
+AC_DEFUN([LT_CMD_MAX_LEN],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+# find the maximum length of command line arguments
+AC_MSG_CHECKING([the maximum length of command line arguments])
+AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
+  i=0
+  teststring="ABCD"
+
+  case $build_os in
+  msdosdjgpp*)
+    # On DJGPP, this test can blow up pretty badly due to problems in libc
+    # (any single argument exceeding 2000 bytes causes a buffer overrun
+    # during glob expansion).  Even if it were fixed, the result of this
+    # check would be larger than it should be.
+    lt_cv_sys_max_cmd_len=12288;    # 12K is about right
+    ;;
+
+  gnu*)
+    # Under GNU Hurd, this test is not required because there is
+    # no limit to the length of command line arguments.
+    # Libtool will interpret -1 as no limit whatsoever
+    lt_cv_sys_max_cmd_len=-1;
+    ;;
+
+  cygwin* | mingw* | cegcc*)
+    # On Win9x/ME, this test blows up -- it succeeds, but takes
+    # about 5 minutes as the teststring grows exponentially.
+    # Worse, since 9x/ME are not pre-emptively multitasking,
+    # you end up with a "frozen" computer, even though with patience
+    # the test eventually succeeds (with a max line length of 256k).
+    # Instead, let's just punt: use the minimum linelength reported by
+    # all of the supported platforms: 8192 (on NT/2K/XP).
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  mint*)
+    # On MiNT this can take a long time and run out of memory.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  amigaos*)
+    # On AmigaOS with pdksh, this test takes hours, literally.
+    # So we just punt and use a minimum line length of 8192.
+    lt_cv_sys_max_cmd_len=8192;
+    ;;
+
+  netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
+    # This has been around since 386BSD, at least.  Likely further.
+    if test -x /sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
+    elif test -x /usr/sbin/sysctl; then
+      lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
+    else
+      lt_cv_sys_max_cmd_len=65536	# usable default for all BSDs
+    fi
+    # And add a safety zone
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+    lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    ;;
+
+  interix*)
+    # We know the value 262144 and hardcode it with a safety zone (like BSD)
+    lt_cv_sys_max_cmd_len=196608
+    ;;
+
+  os2*)
+    # The test takes a long time on OS/2.
+    lt_cv_sys_max_cmd_len=8192
+    ;;
+
+  osf*)
+    # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
+    # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
+    # nice to cause kernel panics so lets avoid the loop below.
+    # First set a reasonable default.
+    lt_cv_sys_max_cmd_len=16384
+    #
+    if test -x /sbin/sysconfig; then
+      case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
+        *1*) lt_cv_sys_max_cmd_len=-1 ;;
+      esac
+    fi
+    ;;
+  sco3.2v5*)
+    lt_cv_sys_max_cmd_len=102400
+    ;;
+  sysv5* | sco5v6* | sysv4.2uw2*)
+    kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
+    if test -n "$kargmax"; then
+      lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[	 ]]//'`
+    else
+      lt_cv_sys_max_cmd_len=32768
+    fi
+    ;;
+  *)
+    lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
+    if test -n "$lt_cv_sys_max_cmd_len"; then
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
+    else
+      # Make teststring a little bigger before we do anything with it.
+      # a 1K string should be a reasonable start.
+      for i in 1 2 3 4 5 6 7 8 ; do
+        teststring=$teststring$teststring
+      done
+      SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
+      # If test is not a shell built-in, we'll probably end up computing a
+      # maximum length that is only half of the actual maximum length, but
+      # we can't tell.
+      while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
+	         = "X$teststring$teststring"; } >/dev/null 2>&1 &&
+	      test $i != 17 # 1/2 MB should be enough
+      do
+        i=`expr $i + 1`
+        teststring=$teststring$teststring
+      done
+      # Only check the string length outside the loop.
+      lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
+      teststring=
+      # Add a significant safety factor because C++ compilers can tack on
+      # massive amounts of additional arguments before passing them to the
+      # linker.  It appears as though 1/2 is a usable value.
+      lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
+    fi
+    ;;
+  esac
+])
+if test -n $lt_cv_sys_max_cmd_len ; then
+  AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
+else
+  AC_MSG_RESULT(none)
+fi
+max_cmd_len=$lt_cv_sys_max_cmd_len
+_LT_DECL([], [max_cmd_len], [0],
+    [What is the maximum length of a command?])
+])# LT_CMD_MAX_LEN
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
+
+
+# _LT_HEADER_DLFCN
+# ----------------
+m4_defun([_LT_HEADER_DLFCN],
+[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
+])# _LT_HEADER_DLFCN
+
+
+# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
+#                      ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
+# ----------------------------------------------------------------
+m4_defun([_LT_TRY_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "$cross_compiling" = yes; then :
+  [$4]
+else
+  lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+  lt_status=$lt_dlunknown
+  cat > conftest.$ac_ext <<_LT_EOF
+[#line $LINENO "configure"
+#include "confdefs.h"
+
+#if HAVE_DLFCN_H
+#include 
+#endif
+
+#include 
+
+#ifdef RTLD_GLOBAL
+#  define LT_DLGLOBAL		RTLD_GLOBAL
+#else
+#  ifdef DL_GLOBAL
+#    define LT_DLGLOBAL		DL_GLOBAL
+#  else
+#    define LT_DLGLOBAL		0
+#  endif
+#endif
+
+/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
+   find out it does not work in some platform. */
+#ifndef LT_DLLAZY_OR_NOW
+#  ifdef RTLD_LAZY
+#    define LT_DLLAZY_OR_NOW		RTLD_LAZY
+#  else
+#    ifdef DL_LAZY
+#      define LT_DLLAZY_OR_NOW		DL_LAZY
+#    else
+#      ifdef RTLD_NOW
+#        define LT_DLLAZY_OR_NOW	RTLD_NOW
+#      else
+#        ifdef DL_NOW
+#          define LT_DLLAZY_OR_NOW	DL_NOW
+#        else
+#          define LT_DLLAZY_OR_NOW	0
+#        endif
+#      endif
+#    endif
+#  endif
+#endif
+
+/* When -fvisbility=hidden is used, assume the code has been annotated
+   correspondingly for the symbols needed.  */
+#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
+int fnord () __attribute__((visibility("default")));
+#endif
+
+int fnord () { return 42; }
+int main ()
+{
+  void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
+  int status = $lt_dlunknown;
+
+  if (self)
+    {
+      if (dlsym (self,"fnord"))       status = $lt_dlno_uscore;
+      else
+        {
+	  if (dlsym( self,"_fnord"))  status = $lt_dlneed_uscore;
+          else puts (dlerror ());
+	}
+      /* dlclose (self); */
+    }
+  else
+    puts (dlerror ());
+
+  return status;
+}]
+_LT_EOF
+  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
+    (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
+    lt_status=$?
+    case x$lt_status in
+      x$lt_dlno_uscore) $1 ;;
+      x$lt_dlneed_uscore) $2 ;;
+      x$lt_dlunknown|x*) $3 ;;
+    esac
+  else :
+    # compilation failed
+    $3
+  fi
+fi
+rm -fr conftest*
+])# _LT_TRY_DLOPEN_SELF
+
+
+# LT_SYS_DLOPEN_SELF
+# ------------------
+AC_DEFUN([LT_SYS_DLOPEN_SELF],
+[m4_require([_LT_HEADER_DLFCN])dnl
+if test "x$enable_dlopen" != xyes; then
+  enable_dlopen=unknown
+  enable_dlopen_self=unknown
+  enable_dlopen_self_static=unknown
+else
+  lt_cv_dlopen=no
+  lt_cv_dlopen_libs=
+
+  case $host_os in
+  beos*)
+    lt_cv_dlopen="load_add_on"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ;;
+
+  mingw* | pw32* | cegcc*)
+    lt_cv_dlopen="LoadLibrary"
+    lt_cv_dlopen_libs=
+    ;;
+
+  cygwin*)
+    lt_cv_dlopen="dlopen"
+    lt_cv_dlopen_libs=
+    ;;
+
+  darwin*)
+  # if libdl is installed we need to link against it
+    AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
+    lt_cv_dlopen="dyld"
+    lt_cv_dlopen_libs=
+    lt_cv_dlopen_self=yes
+    ])
+    ;;
+
+  *)
+    AC_CHECK_FUNC([shl_load],
+	  [lt_cv_dlopen="shl_load"],
+      [AC_CHECK_LIB([dld], [shl_load],
+	    [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
+	[AC_CHECK_FUNC([dlopen],
+	      [lt_cv_dlopen="dlopen"],
+	  [AC_CHECK_LIB([dl], [dlopen],
+		[lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
+	    [AC_CHECK_LIB([svld], [dlopen],
+		  [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
+	      [AC_CHECK_LIB([dld], [dld_link],
+		    [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
+	      ])
+	    ])
+	  ])
+	])
+      ])
+    ;;
+  esac
+
+  if test "x$lt_cv_dlopen" != xno; then
+    enable_dlopen=yes
+  else
+    enable_dlopen=no
+  fi
+
+  case $lt_cv_dlopen in
+  dlopen)
+    save_CPPFLAGS="$CPPFLAGS"
+    test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
+
+    save_LDFLAGS="$LDFLAGS"
+    wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
+
+    save_LIBS="$LIBS"
+    LIBS="$lt_cv_dlopen_libs $LIBS"
+
+    AC_CACHE_CHECK([whether a program can dlopen itself],
+	  lt_cv_dlopen_self, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
+	    lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
+    ])
+
+    if test "x$lt_cv_dlopen_self" = xyes; then
+      wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
+      AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
+	  lt_cv_dlopen_self_static, [dnl
+	  _LT_TRY_DLOPEN_SELF(
+	    lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
+	    lt_cv_dlopen_self_static=no,  lt_cv_dlopen_self_static=cross)
+      ])
+    fi
+
+    CPPFLAGS="$save_CPPFLAGS"
+    LDFLAGS="$save_LDFLAGS"
+    LIBS="$save_LIBS"
+    ;;
+  esac
+
+  case $lt_cv_dlopen_self in
+  yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
+  *) enable_dlopen_self=unknown ;;
+  esac
+
+  case $lt_cv_dlopen_self_static in
+  yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
+  *) enable_dlopen_self_static=unknown ;;
+  esac
+fi
+_LT_DECL([dlopen_support], [enable_dlopen], [0],
+	 [Whether dlopen is supported])
+_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
+	 [Whether dlopen of programs is supported])
+_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
+	 [Whether dlopen of statically linked programs is supported])
+])# LT_SYS_DLOPEN_SELF
+
+# Old name:
+AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
+
+
+# _LT_COMPILER_C_O([TAGNAME])
+# ---------------------------
+# Check to see if options -c and -o are simultaneously supported by compiler.
+# This macro does not hard code the compiler like AC_PROG_CC_C_O.
+m4_defun([_LT_COMPILER_C_O],
+[m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
+  [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
+   $RM -r conftest 2>/dev/null
+   mkdir conftest
+   cd conftest
+   mkdir out
+   echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+   lt_compiler_flag="-o out/conftest2.$ac_objext"
+   # Insert the option either (1) after the last *FLAGS variable, or
+   # (2) before a word containing "conftest.", or (3) at the end.
+   # Note that $ac_compile itself does not contain backslashes and begins
+   # with a dollar sign (not a hyphen), so the echo should work correctly.
+   lt_compile=`echo "$ac_compile" | $SED \
+   -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
+   -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
+   -e 's:$: $lt_compiler_flag:'`
+   (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
+   (eval "$lt_compile" 2>out/conftest.err)
+   ac_status=$?
+   cat out/conftest.err >&AS_MESSAGE_LOG_FD
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   if (exit $ac_status) && test -s out/conftest2.$ac_objext
+   then
+     # The compiler can only warn and ignore the option if not recognized
+     # So say no if there are warnings
+     $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
+     $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
+     if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
+       _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+     fi
+   fi
+   chmod u+w . 2>&AS_MESSAGE_LOG_FD
+   $RM conftest*
+   # SGI C++ compiler will create directory out/ii_files/ for
+   # template instantiation
+   test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
+   $RM out/* && rmdir out
+   cd ..
+   $RM -r conftest
+   $RM conftest*
+])
+_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
+	[Does compiler simultaneously support -c and -o options?])
+])# _LT_COMPILER_C_O
+
+
+# _LT_COMPILER_FILE_LOCKS([TAGNAME])
+# ----------------------------------
+# Check to see if we can do hard links to lock some files if needed
+m4_defun([_LT_COMPILER_FILE_LOCKS],
+[m4_require([_LT_ENABLE_LOCK])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+_LT_COMPILER_C_O([$1])
+
+hard_links="nottested"
+if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
+  # do not overwrite the value of need_locks provided by the user
+  AC_MSG_CHECKING([if we can lock with hard links])
+  hard_links=yes
+  $RM conftest*
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  touch conftest.a
+  ln conftest.a conftest.b 2>&5 || hard_links=no
+  ln conftest.a conftest.b 2>/dev/null && hard_links=no
+  AC_MSG_RESULT([$hard_links])
+  if test "$hard_links" = no; then
+    AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
+    need_locks=warn
+  fi
+else
+  need_locks=no
+fi
+_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
+])# _LT_COMPILER_FILE_LOCKS
+
+
+# _LT_CHECK_OBJDIR
+# ----------------
+m4_defun([_LT_CHECK_OBJDIR],
+[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
+[rm -f .libs 2>/dev/null
+mkdir .libs 2>/dev/null
+if test -d .libs; then
+  lt_cv_objdir=.libs
+else
+  # MS-DOS does not allow filenames that begin with a dot.
+  lt_cv_objdir=_libs
+fi
+rmdir .libs 2>/dev/null])
+objdir=$lt_cv_objdir
+_LT_DECL([], [objdir], [0],
+         [The name of the directory that contains temporary libtool files])dnl
+m4_pattern_allow([LT_OBJDIR])dnl
+AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
+  [Define to the sub-directory in which libtool stores uninstalled libraries.])
+])# _LT_CHECK_OBJDIR
+
+
+# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
+# --------------------------------------
+# Check hardcoding attributes.
+m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
+[AC_MSG_CHECKING([how to hardcode library paths into programs])
+_LT_TAGVAR(hardcode_action, $1)=
+if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
+   test -n "$_LT_TAGVAR(runpath_var, $1)" ||
+   test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
+
+  # We can hardcode non-existent directories.
+  if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
+     # If the only mechanism to avoid hardcoding is shlibpath_var, we
+     # have to relink, otherwise we might link with an installed library
+     # when we should be linking with a yet-to-be-installed one
+     ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
+     test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
+    # Linking always hardcodes the temporary library directory.
+    _LT_TAGVAR(hardcode_action, $1)=relink
+  else
+    # We can link without hardcoding, and we can hardcode nonexisting dirs.
+    _LT_TAGVAR(hardcode_action, $1)=immediate
+  fi
+else
+  # We cannot hardcode anything, or else we can only hardcode existing
+  # directories.
+  _LT_TAGVAR(hardcode_action, $1)=unsupported
+fi
+AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
+
+if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
+   test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
+  # Fast installation is not supported
+  enable_fast_install=no
+elif test "$shlibpath_overrides_runpath" = yes ||
+     test "$enable_shared" = no; then
+  # Fast installation is not necessary
+  enable_fast_install=needless
+fi
+_LT_TAGDECL([], [hardcode_action], [0],
+    [How to hardcode a shared library path into an executable])
+])# _LT_LINKER_HARDCODE_LIBPATH
+
+
+# _LT_CMD_STRIPLIB
+# ----------------
+m4_defun([_LT_CMD_STRIPLIB],
+[m4_require([_LT_DECL_EGREP])
+striplib=
+old_striplib=
+AC_MSG_CHECKING([whether stripping libraries is possible])
+if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
+  test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
+  test -z "$striplib" && striplib="$STRIP --strip-unneeded"
+  AC_MSG_RESULT([yes])
+else
+# FIXME - insert some real tests, host_os isn't really good enough
+  case $host_os in
+  darwin*)
+    if test -n "$STRIP" ; then
+      striplib="$STRIP -x"
+      old_striplib="$STRIP -S"
+      AC_MSG_RESULT([yes])
+    else
+      AC_MSG_RESULT([no])
+    fi
+    ;;
+  *)
+    AC_MSG_RESULT([no])
+    ;;
+  esac
+fi
+_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
+_LT_DECL([], [striplib], [1])
+])# _LT_CMD_STRIPLIB
+
+
+# _LT_SYS_DYNAMIC_LINKER([TAG])
+# -----------------------------
+# PORTME Fill in your ld.so characteristics
+m4_defun([_LT_SYS_DYNAMIC_LINKER],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_OBJDUMP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CHECK_SHELL_FEATURES])dnl
+AC_MSG_CHECKING([dynamic linker characteristics])
+m4_if([$1],
+	[], [
+if test "$GCC" = yes; then
+  case $host_os in
+    darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
+    *) lt_awk_arg="/^libraries:/" ;;
+  esac
+  case $host_os in
+    mingw* | cegcc*) lt_sed_strip_eq="s,=\([[A-Za-z]]:\),\1,g" ;;
+    *) lt_sed_strip_eq="s,=/,/,g" ;;
+  esac
+  lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
+  case $lt_search_path_spec in
+  *\;*)
+    # if the path contains ";" then we assume it to be the separator
+    # otherwise default to the standard path separator (i.e. ":") - it is
+    # assumed that no part of a normal pathname contains ";" but that should
+    # okay in the real world where ";" in dirpaths is itself problematic.
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
+    ;;
+  *)
+    lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
+    ;;
+  esac
+  # Ok, now we have the path, separated by spaces, we can step through it
+  # and add multilib dir if necessary.
+  lt_tmp_lt_search_path_spec=
+  lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
+  for lt_sys_path in $lt_search_path_spec; do
+    if test -d "$lt_sys_path/$lt_multi_os_dir"; then
+      lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
+    else
+      test -d "$lt_sys_path" && \
+	lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
+    fi
+  done
+  lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
+BEGIN {RS=" "; FS="/|\n";} {
+  lt_foo="";
+  lt_count=0;
+  for (lt_i = NF; lt_i > 0; lt_i--) {
+    if ($lt_i != "" && $lt_i != ".") {
+      if ($lt_i == "..") {
+        lt_count++;
+      } else {
+        if (lt_count == 0) {
+          lt_foo="/" $lt_i lt_foo;
+        } else {
+          lt_count--;
+        }
+      }
+    }
+  }
+  if (lt_foo != "") { lt_freq[[lt_foo]]++; }
+  if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
+}'`
+  # AWK program above erroneously prepends '/' to C:/dos/paths
+  # for these hosts.
+  case $host_os in
+    mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
+      $SED 's,/\([[A-Za-z]]:\),\1,g'` ;;
+  esac
+  sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
+else
+  sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
+fi])
+library_names_spec=
+libname_spec='lib$name'
+soname_spec=
+shrext_cmds=".so"
+postinstall_cmds=
+postuninstall_cmds=
+finish_cmds=
+finish_eval=
+shlibpath_var=
+shlibpath_overrides_runpath=unknown
+version_type=none
+dynamic_linker="$host_os ld.so"
+sys_lib_dlsearch_path_spec="/lib /usr/lib"
+need_lib_prefix=unknown
+hardcode_into_libs=no
+
+# when you set need_version to no, make sure it does not cause -set_version
+# flags to be left without arguments
+need_version=unknown
+
+case $host_os in
+aix3*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
+  shlibpath_var=LIBPATH
+
+  # AIX 3 has no versioning support, so we append a major version to the name.
+  soname_spec='${libname}${release}${shared_ext}$major'
+  ;;
+
+aix[[4-9]]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  hardcode_into_libs=yes
+  if test "$host_cpu" = ia64; then
+    # AIX 5 supports IA64
+    library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
+    shlibpath_var=LD_LIBRARY_PATH
+  else
+    # With GCC up to 2.95.x, collect2 would create an import file
+    # for dependence libraries.  The import file would start with
+    # the line `#! .'.  This would cause the generated library to
+    # depend on `.', always an invalid library.  This was fixed in
+    # development snapshots of GCC prior to 3.0.
+    case $host_os in
+      aix4 | aix4.[[01]] | aix4.[[01]].*)
+      if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
+	   echo ' yes '
+	   echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
+	:
+      else
+	can_build_shared=no
+      fi
+      ;;
+    esac
+    # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
+    # soname into executable. Probably we can add versioning support to
+    # collect2, so additional links can be useful in future.
+    if test "$aix_use_runtimelinking" = yes; then
+      # If using run time linking (on AIX 4.2 or later) use lib.so
+      # instead of lib.a to let people know that these are not
+      # typical AIX shared libraries.
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    else
+      # We preserve .a as extension for shared libraries through AIX4.2
+      # and later when we are not doing run time linking.
+      library_names_spec='${libname}${release}.a $libname.a'
+      soname_spec='${libname}${release}${shared_ext}$major'
+    fi
+    shlibpath_var=LIBPATH
+  fi
+  ;;
+
+amigaos*)
+  case $host_cpu in
+  powerpc)
+    # Since July 2007 AmigaOS4 officially supports .so libraries.
+    # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    ;;
+  m68k)
+    library_names_spec='$libname.ixlibrary $libname.a'
+    # Create ${libname}_ixlibrary.a entries in /sys/libs.
+    finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
+    ;;
+  esac
+  ;;
+
+beos*)
+  library_names_spec='${libname}${shared_ext}'
+  dynamic_linker="$host_os ld.so"
+  shlibpath_var=LIBRARY_PATH
+  ;;
+
+bsdi[[45]]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
+  sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
+  # the default ld.so.conf also contains /usr/contrib/lib and
+  # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
+  # libtool to hard-code these into programs
+  ;;
+
+cygwin* | mingw* | pw32* | cegcc*)
+  version_type=windows
+  shrext_cmds=".dll"
+  need_version=no
+  need_lib_prefix=no
+
+  case $GCC,$cc_basename in
+  yes,*)
+    # gcc
+    library_names_spec='$libname.dll.a'
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname~
+      chmod a+x \$dldir/$dlname~
+      if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
+        eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
+      fi'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+
+    case $host_os in
+    cygwin*)
+      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
+      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+m4_if([$1], [],[
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
+      ;;
+    mingw* | cegcc*)
+      # MinGW DLLs use traditional 'lib' prefix
+      soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    pw32*)
+      # pw32 DLLs use 'pw' prefix rather than 'lib'
+      library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+      ;;
+    esac
+    dynamic_linker='Win32 ld.exe'
+    ;;
+
+  *,cl*)
+    # Native MSVC
+    libname_spec='$name'
+    soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
+    library_names_spec='${libname}.dll.lib'
+
+    case $build_os in
+    mingw*)
+      sys_lib_search_path_spec=
+      lt_save_ifs=$IFS
+      IFS=';'
+      for lt_path in $LIB
+      do
+        IFS=$lt_save_ifs
+        # Let DOS variable expansion print the short 8.3 style file name.
+        lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
+        sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
+      done
+      IFS=$lt_save_ifs
+      # Convert to MSYS style.
+      sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
+      ;;
+    cygwin*)
+      # Convert to unix form, then to dos form, then back to unix form
+      # but this time dos style (no spaces!) so that the unix form looks
+      # like /cygdrive/c/PROGRA~1:/cygdr...
+      sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
+      sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
+      sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+      ;;
+    *)
+      sys_lib_search_path_spec="$LIB"
+      if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
+        # It is most probably a Windows format PATH.
+        sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
+      else
+        sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
+      fi
+      # FIXME: find the short name or the path components, as spaces are
+      # common. (e.g. "Program Files" -> "PROGRA~1")
+      ;;
+    esac
+
+    # DLL is installed to $(libdir)/../bin by postinstall_cmds
+    postinstall_cmds='base_file=`basename \${file}`~
+      dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
+      dldir=$destdir/`dirname \$dlpath`~
+      test -d \$dldir || mkdir -p \$dldir~
+      $install_prog $dir/$dlname \$dldir/$dlname'
+    postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
+      dlpath=$dir/\$dldll~
+       $RM \$dlpath'
+    shlibpath_overrides_runpath=yes
+    dynamic_linker='Win32 link.exe'
+    ;;
+
+  *)
+    # Assume MSVC wrapper
+    library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
+    dynamic_linker='Win32 ld.exe'
+    ;;
+  esac
+  # FIXME: first we should search . and the directory the executable is in
+  shlibpath_var=PATH
+  ;;
+
+darwin* | rhapsody*)
+  dynamic_linker="$host_os dyld"
+  version_type=darwin
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
+  soname_spec='${libname}${release}${major}$shared_ext'
+  shlibpath_overrides_runpath=yes
+  shlibpath_var=DYLD_LIBRARY_PATH
+  shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
+m4_if([$1], [],[
+  sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
+  sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
+  ;;
+
+dgux*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+freebsd* | dragonfly*)
+  # DragonFly does not have aout.  When/if they implement a new
+  # versioning mechanism, adjust this.
+  if test -x /usr/bin/objformat; then
+    objformat=`/usr/bin/objformat`
+  else
+    case $host_os in
+    freebsd[[23]].*) objformat=aout ;;
+    *) objformat=elf ;;
+    esac
+  fi
+  version_type=freebsd-$objformat
+  case $version_type in
+    freebsd-elf*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+      need_version=no
+      need_lib_prefix=no
+      ;;
+    freebsd-*)
+      library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
+      need_version=yes
+      ;;
+  esac
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_os in
+  freebsd2.*)
+    shlibpath_overrides_runpath=yes
+    ;;
+  freebsd3.[[01]]* | freebsdelf3.[[01]]*)
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
+  freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
+    shlibpath_overrides_runpath=no
+    hardcode_into_libs=yes
+    ;;
+  *) # from 4.6 on, and DragonFly
+    shlibpath_overrides_runpath=yes
+    hardcode_into_libs=yes
+    ;;
+  esac
+  ;;
+
+gnu*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+haiku*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  dynamic_linker="$host_os runtime_loader"
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib'
+  hardcode_into_libs=yes
+  ;;
+
+hpux9* | hpux10* | hpux11*)
+  # Give a soname corresponding to the major version so that dld.sl refuses to
+  # link against other versions.
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  case $host_cpu in
+  ia64*)
+    shrext_cmds='.so'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.so"
+    shlibpath_var=LD_LIBRARY_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    if test "X$HPUX_IA64_MODE" = X32; then
+      sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
+    else
+      sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
+    fi
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  hppa*64*)
+    shrext_cmds='.sl'
+    hardcode_into_libs=yes
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
+    shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
+    sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
+    ;;
+  *)
+    shrext_cmds='.sl'
+    dynamic_linker="$host_os dld.sl"
+    shlibpath_var=SHLIB_PATH
+    shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    ;;
+  esac
+  # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
+  postinstall_cmds='chmod 555 $lib'
+  # or fails outright, so override atomically:
+  install_override_mode=555
+  ;;
+
+interix[[3-9]]*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $host_os in
+    nonstopux*) version_type=nonstopux ;;
+    *)
+	if test "$lt_cv_prog_gnu_ld" = yes; then
+		version_type=linux # correct to gnu/linux during the next big refactor
+	else
+		version_type=irix
+	fi ;;
+  esac
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
+  case $host_os in
+  irix5* | nonstopux*)
+    libsuff= shlibsuff=
+    ;;
+  *)
+    case $LD in # libtool.m4 will add one of these switches to LD
+    *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
+      libsuff= shlibsuff= libmagic=32-bit;;
+    *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
+      libsuff=32 shlibsuff=N32 libmagic=N32;;
+    *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
+      libsuff=64 shlibsuff=64 libmagic=64-bit;;
+    *) libsuff= shlibsuff= libmagic=never-match;;
+    esac
+    ;;
+  esac
+  shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
+  shlibpath_overrides_runpath=no
+  sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
+  sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
+  hardcode_into_libs=yes
+  ;;
+
+# No shared lib support for Linux oldld, aout, or coff.
+linux*oldld* | linux*aout* | linux*coff*)
+  dynamic_linker=no
+  ;;
+
+# This must be glibc/ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+
+  # Some binutils ld are patched to set DT_RUNPATH
+  AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath],
+    [lt_cv_shlibpath_overrides_runpath=no
+    save_LDFLAGS=$LDFLAGS
+    save_libdir=$libdir
+    eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+	 LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+      [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+	 [lt_cv_shlibpath_overrides_runpath=yes])])
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+    ])
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
+
+  # This implies no fast_install, which is unacceptable.
+  # Some rework will be needed to allow for fast_install
+  # before this can be enabled.
+  hardcode_into_libs=yes
+
+  # Append ld.so.conf contents to the search path
+  if test -f /etc/ld.so.conf; then
+    lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[	 ]*hwcap[	 ]/d;s/[:,	]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
+    sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
+  fi
+
+  # We used to test for /lib/ld.so.1 and disable shared libraries on
+  # powerpc, because MkLinux only supported shared libraries with the
+  # GNU dynamic linker.  Since this was broken with cross compilers,
+  # most powerpc-linux boxes support dynamic linking these days and
+  # people can always --disable-shared, the test was removed, and we
+  # assume the GNU/Linux dynamic linker is in use.
+  dynamic_linker='GNU/Linux ld.so'
+  ;;
+
+netbsdelf*-gnu)
+  version_type=linux
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='NetBSD ld.elf_so'
+  ;;
+
+netbsd*)
+  version_type=sunos
+  need_lib_prefix=no
+  need_version=no
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+    finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+    dynamic_linker='NetBSD (a.out) ld.so'
+  else
+    library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
+    soname_spec='${libname}${release}${shared_ext}$major'
+    dynamic_linker='NetBSD ld.elf_so'
+  fi
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  ;;
+
+newsos6)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  ;;
+
+*nto* | *qnx*)
+  version_type=qnx
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  dynamic_linker='ldqnx.so'
+  ;;
+
+openbsd*)
+  version_type=sunos
+  sys_lib_dlsearch_path_spec="/usr/lib"
+  need_lib_prefix=no
+  # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
+  case $host_os in
+    openbsd3.3 | openbsd3.3.*)	need_version=yes ;;
+    *)				need_version=no  ;;
+  esac
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    case $host_os in
+      openbsd2.[[89]] | openbsd2.[[89]].*)
+	shlibpath_overrides_runpath=no
+	;;
+      *)
+	shlibpath_overrides_runpath=yes
+	;;
+      esac
+  else
+    shlibpath_overrides_runpath=yes
+  fi
+  ;;
+
+os2*)
+  libname_spec='$name'
+  shrext_cmds=".dll"
+  need_lib_prefix=no
+  library_names_spec='$libname${shared_ext} $libname.a'
+  dynamic_linker='OS/2 ld.exe'
+  shlibpath_var=LIBPATH
+  ;;
+
+osf3* | osf4* | osf5*)
+  version_type=osf
+  need_lib_prefix=no
+  need_version=no
+  soname_spec='${libname}${release}${shared_ext}$major'
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
+  sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
+  ;;
+
+rdos*)
+  dynamic_linker=no
+  ;;
+
+solaris*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  # ldd complains unless libraries are executable
+  postinstall_cmds='chmod +x $lib'
+  ;;
+
+sunos4*)
+  version_type=sunos
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
+  finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  if test "$with_gnu_ld" = yes; then
+    need_lib_prefix=no
+  fi
+  need_version=yes
+  ;;
+
+sysv4 | sysv4.3*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  case $host_vendor in
+    sni)
+      shlibpath_overrides_runpath=no
+      need_lib_prefix=no
+      runpath_var=LD_RUN_PATH
+      ;;
+    siemens)
+      need_lib_prefix=no
+      ;;
+    motorola)
+      need_lib_prefix=no
+      need_version=no
+      shlibpath_overrides_runpath=no
+      sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
+      ;;
+  esac
+  ;;
+
+sysv4*MP*)
+  if test -d /usr/nec ;then
+    version_type=linux # correct to gnu/linux during the next big refactor
+    library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
+    soname_spec='$libname${shared_ext}.$major'
+    shlibpath_var=LD_LIBRARY_PATH
+  fi
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  version_type=freebsd-elf
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=yes
+  hardcode_into_libs=yes
+  if test "$with_gnu_ld" = yes; then
+    sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
+  else
+    sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
+    case $host_os in
+      sco3.2v5*)
+        sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
+	;;
+    esac
+  fi
+  sys_lib_dlsearch_path_spec='/usr/lib'
+  ;;
+
+tpf*)
+  # TPF is a cross-target only.  Preferred cross-host = GNU/Linux.
+  version_type=linux # correct to gnu/linux during the next big refactor
+  need_lib_prefix=no
+  need_version=no
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  shlibpath_var=LD_LIBRARY_PATH
+  shlibpath_overrides_runpath=no
+  hardcode_into_libs=yes
+  ;;
+
+uts4*)
+  version_type=linux # correct to gnu/linux during the next big refactor
+  library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+  soname_spec='${libname}${release}${shared_ext}$major'
+  shlibpath_var=LD_LIBRARY_PATH
+  ;;
+
+*)
+  dynamic_linker=no
+  ;;
+esac
+AC_MSG_RESULT([$dynamic_linker])
+test "$dynamic_linker" = no && can_build_shared=no
+
+variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
+if test "$GCC" = yes; then
+  variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
+fi
+
+if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
+  sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
+fi
+if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
+  sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
+fi
+
+_LT_DECL([], [variables_saved_for_relink], [1],
+    [Variables whose values should be saved in libtool wrapper scripts and
+    restored at link time])
+_LT_DECL([], [need_lib_prefix], [0],
+    [Do we need the "lib" prefix for modules?])
+_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
+_LT_DECL([], [version_type], [0], [Library versioning type])
+_LT_DECL([], [runpath_var], [0],  [Shared library runtime path variable])
+_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
+_LT_DECL([], [shlibpath_overrides_runpath], [0],
+    [Is shlibpath searched before the hard-coded library search path?])
+_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
+_LT_DECL([], [library_names_spec], [1],
+    [[List of archive names.  First name is the real one, the rest are links.
+    The last name is the one that the linker finds with -lNAME]])
+_LT_DECL([], [soname_spec], [1],
+    [[The coded name of the library, if different from the real name]])
+_LT_DECL([], [install_override_mode], [1],
+    [Permission mode override for installation of shared libraries])
+_LT_DECL([], [postinstall_cmds], [2],
+    [Command to use after installation of a shared archive])
+_LT_DECL([], [postuninstall_cmds], [2],
+    [Command to use after uninstallation of a shared archive])
+_LT_DECL([], [finish_cmds], [2],
+    [Commands used to finish a libtool library installation in a directory])
+_LT_DECL([], [finish_eval], [1],
+    [[As "finish_cmds", except a single script fragment to be evaled but
+    not shown]])
+_LT_DECL([], [hardcode_into_libs], [0],
+    [Whether we should hardcode library paths into libraries])
+_LT_DECL([], [sys_lib_search_path_spec], [2],
+    [Compile-time system search path for libraries])
+_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
+    [Run-time system search path for libraries])
+])# _LT_SYS_DYNAMIC_LINKER
+
+
+# _LT_PATH_TOOL_PREFIX(TOOL)
+# --------------------------
+# find a file program which can recognize shared library
+AC_DEFUN([_LT_PATH_TOOL_PREFIX],
+[m4_require([_LT_DECL_EGREP])dnl
+AC_MSG_CHECKING([for $1])
+AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
+[case $MAGIC_CMD in
+[[\\/*] |  ?:[\\/]*])
+  lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
+  ;;
+*)
+  lt_save_MAGIC_CMD="$MAGIC_CMD"
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+dnl $ac_dummy forces splitting on constant user-supplied paths.
+dnl POSIX.2 word splitting is done only on the output of word expansions,
+dnl not every word.  This closes a longstanding sh security hole.
+  ac_dummy="m4_if([$2], , $PATH, [$2])"
+  for ac_dir in $ac_dummy; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$1; then
+      lt_cv_path_MAGIC_CMD="$ac_dir/$1"
+      if test -n "$file_magic_test_file"; then
+	case $deplibs_check_method in
+	"file_magic "*)
+	  file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
+	  MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+	  if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
+	    $EGREP "$file_magic_regex" > /dev/null; then
+	    :
+	  else
+	    cat <<_LT_EOF 1>&2
+
+*** Warning: the command libtool uses to detect shared libraries,
+*** $file_magic_cmd, produces output that libtool cannot recognize.
+*** The result is that libtool may fail to recognize shared libraries
+*** as such.  This will affect the creation of libtool libraries that
+*** depend on shared libraries, but programs linked with such libtool
+*** libraries will work regardless of this problem.  Nevertheless, you
+*** may want to report the problem to your system manager and/or to
+*** bug-libtool@gnu.org
+
+_LT_EOF
+	  fi ;;
+	esac
+      fi
+      break
+    fi
+  done
+  IFS="$lt_save_ifs"
+  MAGIC_CMD="$lt_save_MAGIC_CMD"
+  ;;
+esac])
+MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
+if test -n "$MAGIC_CMD"; then
+  AC_MSG_RESULT($MAGIC_CMD)
+else
+  AC_MSG_RESULT(no)
+fi
+_LT_DECL([], [MAGIC_CMD], [0],
+	 [Used to examine libraries when file_magic_cmd begins with "file"])dnl
+])# _LT_PATH_TOOL_PREFIX
+
+# Old name:
+AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
+
+
+# _LT_PATH_MAGIC
+# --------------
+# find a file program which can recognize a shared library
+m4_defun([_LT_PATH_MAGIC],
+[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
+if test -z "$lt_cv_path_MAGIC_CMD"; then
+  if test -n "$ac_tool_prefix"; then
+    _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
+  else
+    MAGIC_CMD=:
+  fi
+fi
+])# _LT_PATH_MAGIC
+
+
+# LT_PATH_LD
+# ----------
+# find the pathname to the GNU or non-GNU linker
+AC_DEFUN([LT_PATH_LD],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_PROG_ECHO_BACKSLASH])dnl
+
+AC_ARG_WITH([gnu-ld],
+    [AS_HELP_STRING([--with-gnu-ld],
+	[assume the C compiler uses GNU ld @<:@default=no@:>@])],
+    [test "$withval" = no || with_gnu_ld=yes],
+    [with_gnu_ld=no])dnl
+
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  AC_MSG_CHECKING([for ld used by $CC])
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [[\\/]]* | ?:[[\\/]]*)
+      re_direlt='/[[^/]][[^/]]*/\.\./'
+      # Canonicalize the pathname of ld
+      ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
+      while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
+	ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  AC_MSG_CHECKING([for GNU ld])
+else
+  AC_MSG_CHECKING([for non-GNU ld])
+fi
+AC_CACHE_VAL(lt_cv_path_LD,
+[if test -z "$LD"; then
+  lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+  for ac_dir in $PATH; do
+    IFS="$lt_save_ifs"
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      lt_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some variants of GNU ld only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      case `"$lt_cv_path_LD" -v 2>&1 &1 /dev/null 2>&1; then
+    lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+    lt_cv_file_magic_cmd='func_win32_libid'
+  else
+    # Keep this pattern in sync with the one in func_win32_libid.
+    lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)'
+    lt_cv_file_magic_cmd='$OBJDUMP -f'
+  fi
+  ;;
+
+cegcc*)
+  # use the weaker test based on 'objdump'. See mingw*.
+  lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
+  lt_cv_file_magic_cmd='$OBJDUMP -f'
+  ;;
+
+darwin* | rhapsody*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+freebsd* | dragonfly*)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    case $host_cpu in
+    i*86 )
+      # Not sure whether the presence of OpenBSD here was a mistake.
+      # Let's accept both of them until this is cleared up.
+      lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
+      lt_cv_file_magic_cmd=/usr/bin/file
+      lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
+      ;;
+    esac
+  else
+    lt_cv_deplibs_check_method=pass_all
+  fi
+  ;;
+
+gnu*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+haiku*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+hpux10.20* | hpux11*)
+  lt_cv_file_magic_cmd=/usr/bin/file
+  case $host_cpu in
+  ia64*)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
+    lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
+    ;;
+  hppa*64*)
+    [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]']
+    lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
+    ;;
+  *)
+    lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]]\.[[0-9]]) shared library'
+    lt_cv_file_magic_test_file=/usr/lib/libc.sl
+    ;;
+  esac
+  ;;
+
+interix[[3-9]]*)
+  # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
+  lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
+  ;;
+
+irix5* | irix6* | nonstopux*)
+  case $LD in
+  *-32|*"-32 ") libmagic=32-bit;;
+  *-n32|*"-n32 ") libmagic=N32;;
+  *-64|*"-64 ") libmagic=64-bit;;
+  *) libmagic=never-match;;
+  esac
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+# This must be glibc/ELF.
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+netbsd* | netbsdelf*-gnu)
+  if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
+  fi
+  ;;
+
+newos6*)
+  lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
+  lt_cv_file_magic_cmd=/usr/bin/file
+  lt_cv_file_magic_test_file=/usr/lib/libnls.so
+  ;;
+
+*nto* | *qnx*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+openbsd*)
+  if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
+  else
+    lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
+  fi
+  ;;
+
+osf3* | osf4* | osf5*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+rdos*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+solaris*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+
+sysv4 | sysv4.3*)
+  case $host_vendor in
+  motorola)
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
+    lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
+    ;;
+  ncr)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  sequent)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
+    ;;
+  sni)
+    lt_cv_file_magic_cmd='/bin/file'
+    lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
+    lt_cv_file_magic_test_file=/lib/libc.so
+    ;;
+  siemens)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  pc)
+    lt_cv_deplibs_check_method=pass_all
+    ;;
+  esac
+  ;;
+
+tpf*)
+  lt_cv_deplibs_check_method=pass_all
+  ;;
+esac
+])
+
+file_magic_glob=
+want_nocaseglob=no
+if test "$build" = "$host"; then
+  case $host_os in
+  mingw* | pw32*)
+    if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
+      want_nocaseglob=yes
+    else
+      file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[[\1]]\/[[\1]]\/g;/g"`
+    fi
+    ;;
+  esac
+fi
+
+file_magic_cmd=$lt_cv_file_magic_cmd
+deplibs_check_method=$lt_cv_deplibs_check_method
+test -z "$deplibs_check_method" && deplibs_check_method=unknown
+
+_LT_DECL([], [deplibs_check_method], [1],
+    [Method to check whether dependent libraries are shared objects])
+_LT_DECL([], [file_magic_cmd], [1],
+    [Command to use when deplibs_check_method = "file_magic"])
+_LT_DECL([], [file_magic_glob], [1],
+    [How to find potential files when deplibs_check_method = "file_magic"])
+_LT_DECL([], [want_nocaseglob], [1],
+    [Find potential files using nocaseglob when deplibs_check_method = "file_magic"])
+])# _LT_CHECK_MAGIC_METHOD
+
+
+# LT_PATH_NM
+# ----------
+# find the pathname to a BSD- or MS-compatible name lister
+AC_DEFUN([LT_PATH_NM],
+[AC_REQUIRE([AC_PROG_CC])dnl
+AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
+[if test -n "$NM"; then
+  # Let the user override the test.
+  lt_cv_path_NM="$NM"
+else
+  lt_nm_to_check="${ac_tool_prefix}nm"
+  if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
+    lt_nm_to_check="$lt_nm_to_check nm"
+  fi
+  for lt_tmp_nm in $lt_nm_to_check; do
+    lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
+    for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
+      IFS="$lt_save_ifs"
+      test -z "$ac_dir" && ac_dir=.
+      tmp_nm="$ac_dir/$lt_tmp_nm"
+      if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
+	# Check to see if the nm accepts a BSD-compat flag.
+	# Adding the `sed 1q' prevents false positives on HP-UX, which says:
+	#   nm: unknown option "B" ignored
+	# Tru64's nm complains that /dev/null is an invalid object file
+	case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
+	*/dev/null* | *'Invalid file or object type'*)
+	  lt_cv_path_NM="$tmp_nm -B"
+	  break
+	  ;;
+	*)
+	  case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
+	  */dev/null*)
+	    lt_cv_path_NM="$tmp_nm -p"
+	    break
+	    ;;
+	  *)
+	    lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
+	    continue # so that we can try to find one that supports BSD flags
+	    ;;
+	  esac
+	  ;;
+	esac
+      fi
+    done
+    IFS="$lt_save_ifs"
+  done
+  : ${lt_cv_path_NM=no}
+fi])
+if test "$lt_cv_path_NM" != "no"; then
+  NM="$lt_cv_path_NM"
+else
+  # Didn't find any BSD compatible name lister, look for dumpbin.
+  if test -n "$DUMPBIN"; then :
+    # Let the user override the test.
+  else
+    AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :)
+    case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
+    *COFF*)
+      DUMPBIN="$DUMPBIN -symbols"
+      ;;
+    *)
+      DUMPBIN=:
+      ;;
+    esac
+  fi
+  AC_SUBST([DUMPBIN])
+  if test "$DUMPBIN" != ":"; then
+    NM="$DUMPBIN"
+  fi
+fi
+test -z "$NM" && NM=nm
+AC_SUBST([NM])
+_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
+
+AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
+  [lt_cv_nm_interface="BSD nm"
+  echo "int some_variable = 0;" > conftest.$ac_ext
+  (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$ac_compile" 2>conftest.err)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
+  (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  (eval echo "\"\$as_me:$LINENO: output\"" >&AS_MESSAGE_LOG_FD)
+  cat conftest.out >&AS_MESSAGE_LOG_FD
+  if $GREP 'External.*some_variable' conftest.out > /dev/null; then
+    lt_cv_nm_interface="MS dumpbin"
+  fi
+  rm -f conftest*])
+])# LT_PATH_NM
+
+# Old names:
+AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
+AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_PROG_NM], [])
+dnl AC_DEFUN([AC_PROG_NM], [])
+
+# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
+# --------------------------------
+# how to determine the name of the shared library
+# associated with a specific link library.
+#  -- PORTME fill in with the dynamic library characteristics
+m4_defun([_LT_CHECK_SHAREDLIB_FROM_LINKLIB],
+[m4_require([_LT_DECL_EGREP])
+m4_require([_LT_DECL_OBJDUMP])
+m4_require([_LT_DECL_DLLTOOL])
+AC_CACHE_CHECK([how to associate runtime and link libraries],
+lt_cv_sharedlib_from_linklib_cmd,
+[lt_cv_sharedlib_from_linklib_cmd='unknown'
+
+case $host_os in
+cygwin* | mingw* | pw32* | cegcc*)
+  # two different shell functions defined in ltmain.sh
+  # decide which to use based on capabilities of $DLLTOOL
+  case `$DLLTOOL --help 2>&1` in
+  *--identify-strict*)
+    lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
+    ;;
+  *)
+    lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
+    ;;
+  esac
+  ;;
+*)
+  # fallback: assume linklib IS sharedlib
+  lt_cv_sharedlib_from_linklib_cmd="$ECHO"
+  ;;
+esac
+])
+sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
+test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
+
+_LT_DECL([], [sharedlib_from_linklib_cmd], [1],
+    [Command to associate shared and link libraries])
+])# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
+
+
+# _LT_PATH_MANIFEST_TOOL
+# ----------------------
+# locate the manifest tool
+m4_defun([_LT_PATH_MANIFEST_TOOL],
+[AC_CHECK_TOOL(MANIFEST_TOOL, mt, :)
+test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
+AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_mainfest_tool],
+  [lt_cv_path_mainfest_tool=no
+  echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&AS_MESSAGE_LOG_FD
+  $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
+  cat conftest.err >&AS_MESSAGE_LOG_FD
+  if $GREP 'Manifest Tool' conftest.out > /dev/null; then
+    lt_cv_path_mainfest_tool=yes
+  fi
+  rm -f conftest*])
+if test "x$lt_cv_path_mainfest_tool" != xyes; then
+  MANIFEST_TOOL=:
+fi
+_LT_DECL([], [MANIFEST_TOOL], [1], [Manifest tool])dnl
+])# _LT_PATH_MANIFEST_TOOL
+
+
+# LT_LIB_M
+# --------
+# check for math library
+AC_DEFUN([LT_LIB_M],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+LIBM=
+case $host in
+*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
+  # These system don't have libm, or don't need it
+  ;;
+*-ncr-sysv4.3*)
+  AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
+  AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
+  ;;
+*)
+  AC_CHECK_LIB(m, cos, LIBM="-lm")
+  ;;
+esac
+AC_SUBST([LIBM])
+])# LT_LIB_M
+
+# Old name:
+AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_CHECK_LIBM], [])
+
+
+# _LT_COMPILER_NO_RTTI([TAGNAME])
+# -------------------------------
+m4_defun([_LT_COMPILER_NO_RTTI],
+[m4_require([_LT_TAG_COMPILER])dnl
+
+_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+
+if test "$GCC" = yes; then
+  case $cc_basename in
+  nvcc*)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -Xcompiler -fno-builtin' ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' ;;
+  esac
+
+  _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
+    lt_cv_prog_compiler_rtti_exceptions,
+    [-fno-rtti -fno-exceptions], [],
+    [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
+fi
+_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
+	[Compiler flag to turn off builtin functions])
+])# _LT_COMPILER_NO_RTTI
+
+
+# _LT_CMD_GLOBAL_SYMBOLS
+# ----------------------
+m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_PROG_CC])dnl
+AC_REQUIRE([AC_PROG_AWK])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+AC_REQUIRE([LT_PATH_LD])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+
+# Check for command to grab the raw symbol name followed by C symbol from nm.
+AC_MSG_CHECKING([command to parse $NM output from $compiler object])
+AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
+[
+# These are sane defaults that work on at least a few old systems.
+# [They come from Ultrix.  What could be older than Ultrix?!! ;)]
+
+# Character class describing NM global symbol codes.
+symcode='[[BCDEGRST]]'
+
+# Regexp to match symbols that can be accessed directly from C.
+sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
+
+# Define system-specific variables.
+case $host_os in
+aix*)
+  symcode='[[BCDT]]'
+  ;;
+cygwin* | mingw* | pw32* | cegcc*)
+  symcode='[[ABCDGISTW]]'
+  ;;
+hpux*)
+  if test "$host_cpu" = ia64; then
+    symcode='[[ABCDEGRST]]'
+  fi
+  ;;
+irix* | nonstopux*)
+  symcode='[[BCDEGRST]]'
+  ;;
+osf*)
+  symcode='[[BCDEGQRST]]'
+  ;;
+solaris*)
+  symcode='[[BDRT]]'
+  ;;
+sco3.2v5*)
+  symcode='[[DT]]'
+  ;;
+sysv4.2uw2*)
+  symcode='[[DT]]'
+  ;;
+sysv5* | sco5v6* | unixware* | OpenUNIX*)
+  symcode='[[ABDT]]'
+  ;;
+sysv4)
+  symcode='[[DFNSTU]]'
+  ;;
+esac
+
+# If we're using GNU nm, then use its standard symbol codes.
+case `$NM -V 2>&1` in
+*GNU* | *'with BFD'*)
+  symcode='[[ABCDGIRSTW]]' ;;
+esac
+
+# Transform an extracted symbol line into a proper C declaration.
+# Some systems (esp. on ia64) link data and code symbols differently,
+# so use this general approach.
+lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
+
+# Transform an extracted symbol line into symbol name and symbol address
+lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p'"
+lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/  {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/  {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/  {\"lib\2\", (void *) \&\2},/p'"
+
+# Handle CRLF in mingw tool chain
+opt_cr=
+case $build_os in
+mingw*)
+  opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
+  ;;
+esac
+
+# Try without a prefix underscore, then with it.
+for ac_symprfx in "" "_"; do
+
+  # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
+  symxfrm="\\1 $ac_symprfx\\2 \\2"
+
+  # Write the raw and C identifiers.
+  if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+    # Fake it for dumpbin and say T for any non-static function
+    # and D for any global variable.
+    # Also find C++ and __fastcall symbols from MSVC++,
+    # which start with @ or ?.
+    lt_cv_sys_global_symbol_pipe="$AWK ['"\
+"     {last_section=section; section=\$ 3};"\
+"     /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
+"     /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
+"     \$ 0!~/External *\|/{next};"\
+"     / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
+"     {if(hide[section]) next};"\
+"     {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
+"     {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
+"     s[1]~/^[@?]/{print s[1], s[1]; next};"\
+"     s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
+"     ' prfx=^$ac_symprfx]"
+  else
+    lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[	 ]]\($symcode$symcode*\)[[	 ]][[	 ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
+  fi
+  lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
+
+  # Check to see that the pipe works correctly.
+  pipe_works=no
+
+  rm -f conftest*
+  cat > conftest.$ac_ext <<_LT_EOF
+#ifdef __cplusplus
+extern "C" {
+#endif
+char nm_test_var;
+void nm_test_func(void);
+void nm_test_func(void){}
+#ifdef __cplusplus
+}
+#endif
+int main(){nm_test_var='a';nm_test_func();return(0);}
+_LT_EOF
+
+  if AC_TRY_EVAL(ac_compile); then
+    # Now try to grab the symbols.
+    nlist=conftest.nm
+    if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
+      # Try sorting and uniquifying the output.
+      if sort "$nlist" | uniq > "$nlist"T; then
+	mv -f "$nlist"T "$nlist"
+      else
+	rm -f "$nlist"T
+      fi
+
+      # Make sure that we snagged all the symbols we need.
+      if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
+	if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
+	  cat <<_LT_EOF > conftest.$ac_ext
+/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests.  */
+#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
+/* DATA imports from DLLs on WIN32 con't be const, because runtime
+   relocations are performed -- see ld's documentation on pseudo-relocs.  */
+# define LT@&t@_DLSYM_CONST
+#elif defined(__osf__)
+/* This system does not cope well with relocations in const data.  */
+# define LT@&t@_DLSYM_CONST
+#else
+# define LT@&t@_DLSYM_CONST const
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+_LT_EOF
+	  # Now generate the symbol file.
+	  eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
+
+	  cat <<_LT_EOF >> conftest.$ac_ext
+
+/* The mapping between symbol names and symbols.  */
+LT@&t@_DLSYM_CONST struct {
+  const char *name;
+  void       *address;
+}
+lt__PROGRAM__LTX_preloaded_symbols[[]] =
+{
+  { "@PROGRAM@", (void *) 0 },
+_LT_EOF
+	  $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/  {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
+	  cat <<\_LT_EOF >> conftest.$ac_ext
+  {0, (void *) 0}
+};
+
+/* This works around a problem in FreeBSD linker */
+#ifdef FREEBSD_WORKAROUND
+static const void *lt_preloaded_setup() {
+  return lt__PROGRAM__LTX_preloaded_symbols;
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+_LT_EOF
+	  # Now try linking the two files.
+	  mv conftest.$ac_objext conftstm.$ac_objext
+	  lt_globsym_save_LIBS=$LIBS
+	  lt_globsym_save_CFLAGS=$CFLAGS
+	  LIBS="conftstm.$ac_objext"
+	  CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
+	  if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
+	    pipe_works=yes
+	  fi
+	  LIBS=$lt_globsym_save_LIBS
+	  CFLAGS=$lt_globsym_save_CFLAGS
+	else
+	  echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
+	fi
+      else
+	echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
+      fi
+    else
+      echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
+    fi
+  else
+    echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
+    cat conftest.$ac_ext >&5
+  fi
+  rm -rf conftest* conftst*
+
+  # Do not use the global_symbol_pipe unless it works.
+  if test "$pipe_works" = yes; then
+    break
+  else
+    lt_cv_sys_global_symbol_pipe=
+  fi
+done
+])
+if test -z "$lt_cv_sys_global_symbol_pipe"; then
+  lt_cv_sys_global_symbol_to_cdecl=
+fi
+if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
+  AC_MSG_RESULT(failed)
+else
+  AC_MSG_RESULT(ok)
+fi
+
+# Response file support.
+if test "$lt_cv_nm_interface" = "MS dumpbin"; then
+  nm_file_list_spec='@'
+elif $NM --help 2>/dev/null | grep '[[@]]FILE' >/dev/null; then
+  nm_file_list_spec='@'
+fi
+
+_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
+    [Take the output of nm and produce a listing of raw symbols and C names])
+_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
+    [Transform the output of nm in a proper C declaration])
+_LT_DECL([global_symbol_to_c_name_address],
+    [lt_cv_sys_global_symbol_to_c_name_address], [1],
+    [Transform the output of nm in a C name address pair])
+_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
+    [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
+    [Transform the output of nm in a C name address pair when lib prefix is needed])
+_LT_DECL([], [nm_file_list_spec], [1],
+    [Specify filename containing input files for $NM])
+]) # _LT_CMD_GLOBAL_SYMBOLS
+
+
+# _LT_COMPILER_PIC([TAGNAME])
+# ---------------------------
+m4_defun([_LT_COMPILER_PIC],
+[m4_require([_LT_TAG_COMPILER])dnl
+_LT_TAGVAR(lt_prog_compiler_wl, $1)=
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+_LT_TAGVAR(lt_prog_compiler_static, $1)=
+
+m4_if([$1], [CXX], [
+  # C++ specific cases for pic, static, wl, etc.
+  if test "$GXX" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+    aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+    mingw* | cygwin* | os2* | pw32* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+    *djgpp*)
+      # DJGPP does not support shared libraries at all
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+      ;;
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+    *qnx* | *nto*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+  else
+    case $host_os in
+      aix[[4-9]]*)
+	# All AIX code is PIC.
+	if test "$host_cpu" = ia64; then
+	  # AIX 5 now supports IA64 processor
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	else
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+	fi
+	;;
+      chorus*)
+	case $cc_basename in
+	cxch68*)
+	  # Green Hills C++ Compiler
+	  # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
+	  ;;
+	esac
+	;;
+      mingw* | cygwin* | os2* | pw32* | cegcc*)
+	# This hack is so that the source file can tell whether it is being
+	# built for inclusion in a dll (and should export symbols for example).
+	m4_if([$1], [GCJ], [],
+	  [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+	;;
+      dgux*)
+	case $cc_basename in
+	  ec++*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  ghcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      freebsd* | dragonfly*)
+	# FreeBSD uses GNU C++
+	;;
+      hpux9* | hpux10* | hpux11*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    if test "$host_cpu" != ia64; then
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	    fi
+	    ;;
+	  aCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+	    case $host_cpu in
+	    hppa*64*|ia64*)
+	      # +Z the default
+	      ;;
+	    *)
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	      ;;
+	    esac
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      interix*)
+	# This is c89, which is MS Visual C++ (no shared libs)
+	# Anyone wants to do a port?
+	;;
+      irix5* | irix6* | nonstopux*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    # CC pic flag -KPIC is the default.
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+	case $cc_basename in
+	  KCC*)
+	    # KAI C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    ;;
+	  ecpc* )
+	    # old Intel C++ for x86_64 which still supported -KPIC.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  icpc* )
+	    # Intel C++, used to be incompatible with GCC.
+	    # ICC 10 doesn't accept -KPIC any more.
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	    ;;
+	  pgCC* | pgcpp*)
+	    # Portland Group C++ compiler
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  cxx*)
+	    # Compaq C++
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*)
+	    # IBM XL 8.0, 9.0 on PPC and BlueGene
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+      lynxos*)
+	;;
+      m88k*)
+	;;
+      mvs*)
+	case $cc_basename in
+	  cxx*)
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      netbsd* | netbsdelf*-gnu)
+	;;
+      *qnx* | *nto*)
+        # QNX uses GNU C++, but need to define -shared option too, otherwise
+        # it will coredump.
+        _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+        ;;
+      osf3* | osf4* | osf5*)
+	case $cc_basename in
+	  KCC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
+	    ;;
+	  RCC*)
+	    # Rational C++ 2.4.1
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  cxx*)
+	    # Digital/Compaq C++
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    # Make sure the PIC flag is empty.  It appears that all Alpha
+	    # Linux and Compaq Tru64 Unix objects are PIC.
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      psos*)
+	;;
+      solaris*)
+	case $cc_basename in
+	  CC* | sunCC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	    ;;
+	  gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sunos4*)
+	case $cc_basename in
+	  CC*)
+	    # Sun C++ 4.x
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	  lcc*)
+	    # Lucid
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+	case $cc_basename in
+	  CC*)
+	    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	    ;;
+	esac
+	;;
+      tandem*)
+	case $cc_basename in
+	  NCC*)
+	    # NonStop-UX NCC 3.20
+	    _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	    ;;
+	  *)
+	    ;;
+	esac
+	;;
+      vxworks*)
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+	;;
+    esac
+  fi
+],
+[
+  if test "$GCC" = yes; then
+    _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+    _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+
+    case $host_os in
+      aix*)
+      # All AIX code is PIC.
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+        ;;
+      m68k)
+            # FIXME: we need at least 68020 code to build shared libraries, but
+            # adding the `-m68020' flag to GCC prevents building anything better,
+            # like `-m68040'.
+            _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
+        ;;
+      esac
+      ;;
+
+    beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
+      # PIC is the default for these OSes.
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      # Although the cygwin gcc ignores -fPIC, still need this for old-style
+      # (--disable-auto-import) libraries
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    darwin* | rhapsody*)
+      # PIC is the default on this platform
+      # Common symbols not allowed in MH_DYLIB files
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
+      ;;
+
+    haiku*)
+      # PIC is the default for Haiku.
+      # The "-static" flag exists, but is broken.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)=
+      ;;
+
+    hpux*)
+      # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
+      # PA HP-UX.  On IA64 HP-UX, PIC is the default but the pic flag
+      # sets the default TLS model and affects inlining.
+      case $host_cpu in
+      hppa*64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	;;
+      esac
+      ;;
+
+    interix[[3-9]]*)
+      # Interix 3.x gcc -fpic/-fPIC options generate broken code.
+      # Instead, we relocate shared libraries at runtime.
+      ;;
+
+    msdosdjgpp*)
+      # Just because we use GCC doesn't mean we suddenly get shared libraries
+      # on systems that don't support them.
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      enable_shared=no
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
+      fi
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+      ;;
+    esac
+
+    case $cc_basename in
+    nvcc*) # Cuda Compiler Driver 2.2
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker '
+      if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+        _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)"
+      fi
+      ;;
+    esac
+  else
+    # PORTME Check for flag to pass linker flags through the system compiler.
+    case $host_os in
+    aix*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      if test "$host_cpu" = ia64; then
+	# AIX 5 now supports IA64 processor
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      else
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
+      fi
+      ;;
+
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      # This hack is so that the source file can tell whether it is being
+      # built for inclusion in a dll (and should export symbols for example).
+      m4_if([$1], [GCJ], [],
+	[_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
+      ;;
+
+    hpux9* | hpux10* | hpux11*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
+      # not for PA HP-UX.
+      case $host_cpu in
+      hppa*64*|ia64*)
+	# +Z the default
+	;;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
+	;;
+      esac
+      # Is there a better lt_prog_compiler_static that works with the bundled CC?
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # PIC (with -KPIC) is the default.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+      # old Intel for x86_64 which still supported -KPIC.
+      ecc*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # icc used to be incompatible with GCC.
+      # ICC 10 doesn't accept -KPIC any more.
+      icc* | ifort*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+        ;;
+      # Lahey Fortran 8.1.
+      lf95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
+	;;
+      nagfor*)
+	# NAG Fortran compiler
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	;;
+      pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+        # Portland Group compilers (*not* the Pentium gcc compiler,
+	# which looks to be a dead project)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+        ;;
+      ccc*)
+        _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+        # All Alpha code is PIC.
+        _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+        ;;
+      xl* | bgxl* | bgf* | mpixl*)
+	# IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
+	;;
+      *)
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*)
+	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+	  ;;
+	*Sun\ F* | *Sun*Fortran*)
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+	  ;;
+	*Sun\ C*)
+	  # Sun C 5.9
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	  ;;
+        *Intel*\ [[CF]]*Compiler*)
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+	  ;;
+	*Portland\ Group*)
+	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
+	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+	  ;;
+	esac
+	;;
+      esac
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *nto* | *qnx*)
+      # QNX uses GNU C++, but need to define -shared option too, otherwise
+      # it will coredump.
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
+      ;;
+
+    osf3* | osf4* | osf5*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      # All OSF/1 code is PIC.
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    rdos*)
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      case $cc_basename in
+      f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
+      *)
+	_LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec ;then
+	_LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
+	_LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      fi
+      ;;
+
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    unicos*)
+      _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
+      _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+      ;;
+
+    *)
+      _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
+      ;;
+    esac
+  fi
+])
+case $host_os in
+  # For platforms which do not support PIC, -DPIC is meaningless:
+  *djgpp*)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)=
+    ;;
+  *)
+    _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
+    ;;
+esac
+
+AC_CACHE_CHECK([for $compiler option to produce PIC],
+  [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)],
+  [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
+_LT_TAGVAR(lt_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)
+
+#
+# Check to make sure the PIC flag actually works.
+#
+if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
+  _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
+    [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
+    [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
+    [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
+     "" | " "*) ;;
+     *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
+     esac],
+    [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
+     _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
+fi
+_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
+	[Additional compiler flags for building library objects])
+
+_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
+	[How to pass a linker flag through the compiler])
+#
+# Check to make sure the static flag actually works.
+#
+wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
+_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
+  _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
+  $lt_tmp_static_flag,
+  [],
+  [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
+_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
+	[Compiler flag to prevent dynamic linking])
+])# _LT_COMPILER_PIC
+
+
+# _LT_LINKER_SHLIBS([TAGNAME])
+# ----------------------------
+# See if the linker supports building shared libraries.
+m4_defun([_LT_LINKER_SHLIBS],
+[AC_REQUIRE([LT_PATH_LD])dnl
+AC_REQUIRE([LT_PATH_NM])dnl
+m4_require([_LT_PATH_MANIFEST_TOOL])dnl
+m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_DECL_SED])dnl
+m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
+m4_require([_LT_TAG_COMPILER])dnl
+AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+m4_if([$1], [CXX], [
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+  case $host_os in
+  aix[[4-9]]*)
+    # If we're using GNU nm, then we don't want the "-C" option.
+    # -C means demangle to AIX nm, but means don't demangle with GNU nm
+    # Also, AIX nm treats weak defined symbols like other global defined
+    # symbols, whereas GNU nm marks them as "W".
+    if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    else
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+    fi
+    ;;
+  pw32*)
+    _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
+    ;;
+  cygwin* | mingw* | cegcc*)
+    case $cc_basename in
+    cl*)
+      _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+      ;;
+    *)
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+      _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
+      ;;
+    esac
+    ;;
+  linux* | k*bsd*-gnu | gnu*)
+    _LT_TAGVAR(link_all_deplibs, $1)=no
+    ;;
+  *)
+    _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+    ;;
+  esac
+], [
+  runpath_var=
+  _LT_TAGVAR(allow_undefined_flag, $1)=
+  _LT_TAGVAR(always_export_symbols, $1)=no
+  _LT_TAGVAR(archive_cmds, $1)=
+  _LT_TAGVAR(archive_expsym_cmds, $1)=
+  _LT_TAGVAR(compiler_needs_object, $1)=no
+  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+  _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+  _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
+  _LT_TAGVAR(hardcode_automatic, $1)=no
+  _LT_TAGVAR(hardcode_direct, $1)=no
+  _LT_TAGVAR(hardcode_direct_absolute, $1)=no
+  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+  _LT_TAGVAR(hardcode_minus_L, $1)=no
+  _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+  _LT_TAGVAR(inherit_rpath, $1)=no
+  _LT_TAGVAR(link_all_deplibs, $1)=unknown
+  _LT_TAGVAR(module_cmds, $1)=
+  _LT_TAGVAR(module_expsym_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_new_cmds, $1)=
+  _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
+  _LT_TAGVAR(thread_safe_flag_spec, $1)=
+  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+  # include_expsyms should be a list of space-separated symbols to be *always*
+  # included in the symbol list
+  _LT_TAGVAR(include_expsyms, $1)=
+  # exclude_expsyms can be an extended regexp of symbols to exclude
+  # it will be wrapped by ` (' and `)$', so one must not match beginning or
+  # end of line.  Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
+  # as well as any symbol that contains `d'.
+  _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
+  # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
+  # platforms (ab)use it in PIC code, but their linkers get confused if
+  # the symbol is explicitly referenced.  Since portable code cannot
+  # rely on this symbol name, it's probably fine to never include it in
+  # preloaded symbol tables.
+  # Exclude shared library initialization/finalization symbols.
+dnl Note also adjust exclude_expsyms for C++ above.
+  extract_expsyms_cmds=
+
+  case $host_os in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+  linux* | k*bsd*-gnu | gnu*)
+    _LT_TAGVAR(link_all_deplibs, $1)=no
+    ;;
+  esac
+
+  _LT_TAGVAR(ld_shlibs, $1)=yes
+
+  # On some targets, GNU ld is compatible enough with the native linker
+  # that we're better off using the native interface for both.
+  lt_use_gnu_ld_interface=no
+  if test "$with_gnu_ld" = yes; then
+    case $host_os in
+      aix*)
+	# The AIX port of GNU ld has always aspired to compatibility
+	# with the native linker.  However, as the warning in the GNU ld
+	# block says, versions before 2.19.5* couldn't really create working
+	# shared libraries, regardless of the interface used.
+	case `$LD -v 2>&1` in
+	  *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
+	  *\ \(GNU\ Binutils\)\ 2.[[2-9]]*) ;;
+	  *\ \(GNU\ Binutils\)\ [[3-9]]*) ;;
+	  *)
+	    lt_use_gnu_ld_interface=yes
+	    ;;
+	esac
+	;;
+      *)
+	lt_use_gnu_ld_interface=yes
+	;;
+    esac
+  fi
+
+  if test "$lt_use_gnu_ld_interface" = yes; then
+    # If archive_cmds runs LD, not CC, wlarc should be empty
+    wlarc='${wl}'
+
+    # Set some defaults for GNU ld with shared library support. These
+    # are reset later if shared libraries are not supported. Putting them
+    # here allows them to be overridden if necessary.
+    runpath_var=LD_RUN_PATH
+    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+    # ancient GNU ld didn't support --whole-archive et. al.
+    if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
+      _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+    else
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+    supports_anon_versioning=no
+    case `$LD -v 2>&1` in
+      *GNU\ gold*) supports_anon_versioning=yes ;;
+      *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
+      *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
+      *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
+      *\ 2.11.*) ;; # other 2.11 versions
+      *) supports_anon_versioning=yes ;;
+    esac
+
+    # See if GNU ld supports shared libraries.
+    case $host_os in
+    aix[[3-9]]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: the GNU linker, at least up to release 2.19, is reported
+*** to be unable to reliably create shared libraries on AIX.
+*** Therefore, libtool is disabling shared libraries support.  If you
+*** really care for shared libraries, you may want to install binutils
+*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
+*** You will then need to restart the configuration process.
+
+_LT_EOF
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    beos*)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	# Joseph Beckenbach  says some releases of gcc
+	# support --undefined.  This deserves some investigation.  FIXME
+	_LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+      # as there is no search path for DLLs.
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=no
+      _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+      _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
+      _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
+
+      if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	# If the export-symbols file already is a .def file (1st line
+	# is EXPORTS), use it as is; otherwise, prepend...
+	_LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	  cp $export_symbols $output_objdir/$soname.def;
+	else
+	  echo EXPORTS > $output_objdir/$soname.def;
+	  cat $export_symbols >> $output_objdir/$soname.def;
+	fi~
+	$CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    haiku*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    interix[[3-9]]*)
+      _LT_TAGVAR(hardcode_direct, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+      # Instead, shared libraries are loaded at an image base (0x10000000 by
+      # default) and relocated if they conflict, which is a slow very memory
+      # consuming and fragmenting process.  To avoid this, we pick a random,
+      # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+      # time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+      ;;
+
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      tmp_diet=no
+      if test "$host_os" = linux-dietlibc; then
+	case $cc_basename in
+	  diet\ *) tmp_diet=yes;;	# linux-dietlibc with static linking (!diet-dyn)
+	esac
+      fi
+      if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
+	 && test "$tmp_diet" = no
+      then
+	tmp_addflag=' $pic_flag'
+	tmp_sharedflag='-shared'
+	case $cc_basename,$host_cpu in
+        pgcc*)				# Portland Group C compiler
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag'
+	  ;;
+	pgf77* | pgf90* | pgf95* | pgfortran*)
+					# Portland Group f77 and f90 compilers
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  tmp_addflag=' $pic_flag -Mnomain' ;;
+	ecc*,ia64* | icc*,ia64*)	# Intel C compiler on ia64
+	  tmp_addflag=' -i_dynamic' ;;
+	efc*,ia64* | ifort*,ia64*)	# Intel Fortran compiler on ia64
+	  tmp_addflag=' -i_dynamic -nofor_main' ;;
+	ifc* | ifort*)			# Intel Fortran compiler
+	  tmp_addflag=' -nofor_main' ;;
+	lf95*)				# Lahey Fortran 8.1
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)=
+	  tmp_sharedflag='--shared' ;;
+	xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
+	  tmp_sharedflag='-qmkshrobj'
+	  tmp_addflag= ;;
+	nvcc*)	# Cuda Compiler Driver 2.2
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  ;;
+	esac
+	case `$CC -V 2>&1 | sed 5q` in
+	*Sun\ C*)			# Sun C 5.9
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	  _LT_TAGVAR(compiler_needs_object, $1)=yes
+	  tmp_sharedflag='-G' ;;
+	*Sun\ F*)			# Sun Fortran 8.3
+	  tmp_sharedflag='-G' ;;
+	esac
+	_LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+
+        if test "x$supports_anon_versioning" = xyes; then
+          _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	    cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	    echo "local: *; };" >> $output_objdir/$libname.ver~
+	    $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+        fi
+
+	case $cc_basename in
+	xlf* | bgf* | bgxlf* | mpixlf*)
+	  # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
+	  if test "x$supports_anon_versioning" = xyes; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+	      cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+	      echo "local: *; };" >> $output_objdir/$libname.ver~
+	      $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
+	  fi
+	  ;;
+	esac
+      else
+        _LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    netbsd* | netbsdelf*-gnu)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
+	wlarc=
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      fi
+      ;;
+
+    solaris*)
+      if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: The releases 2.8.* of the GNU linker cannot reliably
+*** create shared libraries on Solaris systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.9.1 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+      elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	cat <<_LT_EOF 1>&2
+
+*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
+*** reliably create shared libraries on SCO systems.  Therefore, libtool
+*** is disabling shared libraries support.  We urge you to upgrade GNU
+*** binutils to release 2.16.91.0.3 or newer.  Another option is to modify
+*** your PATH or compiler configuration so that the native linker is
+*** used, and then restart.
+
+_LT_EOF
+	;;
+	*)
+	  # For security reasons, it is highly recommended that you always
+	  # use absolute paths for naming shared libraries, and exclude the
+	  # DT_RUNPATH tag from executables and libraries.  But doing so
+	  # requires that you compile everything twice, which is a pain.
+	  if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+	  else
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	  fi
+	;;
+      esac
+      ;;
+
+    sunos4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      wlarc=
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+    esac
+
+    if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
+      runpath_var=
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=
+      _LT_TAGVAR(whole_archive_flag_spec, $1)=
+    fi
+  else
+    # PORTME fill in a description of your system's linker (not GNU ld)
+    case $host_os in
+    aix3*)
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
+	# Neither direct hardcoding nor static linking is supported with a
+	# broken collect2.
+	_LT_TAGVAR(hardcode_direct, $1)=unsupported
+      fi
+      ;;
+
+    aix[[4-9]]*)
+      if test "$host_cpu" = ia64; then
+	# On IA64, the linker does run time linking by default, so we don't
+	# have to do anything special.
+	aix_use_runtimelinking=no
+	exp_sym_flag='-Bexport'
+	no_entry_flag=""
+      else
+	# If we're using GNU nm, then we don't want the "-C" option.
+	# -C means demangle to AIX nm, but means don't demangle with GNU nm
+	# Also, AIX nm treats weak defined symbols like other global
+	# defined symbols, whereas GNU nm marks them as "W".
+	if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	else
+	  _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
+	fi
+	aix_use_runtimelinking=no
+
+	# Test if we are trying to use run time linking or normal
+	# AIX style linking. If -brtl is somewhere in LDFLAGS, we
+	# need to do runtime linking.
+	case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	  for ld_flag in $LDFLAGS; do
+	  if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+	    aix_use_runtimelinking=yes
+	    break
+	  fi
+	  done
+	  ;;
+	esac
+
+	exp_sym_flag='-bexport'
+	no_entry_flag='-bnoentry'
+      fi
+
+      # When large executables or shared objects are built, AIX ld can
+      # have problems creating the table of contents.  If linking a library
+      # or program results in "error TOC overflow" add -mminimal-toc to
+      # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+      # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+      _LT_TAGVAR(archive_cmds, $1)=''
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+      if test "$GCC" = yes; then
+	case $host_os in aix4.[[012]]|aix4.[[012]].*)
+	# We only want to do this on AIX 4.2 and lower, the check
+	# below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	   strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	  # We have reworked collect2
+	  :
+	  else
+	  # We have old collect2
+	  _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	  # It fails to find uninstalled libraries when the uninstalled
+	  # path is not listed in the libpath.  Setting hardcode_minus_L
+	  # to unsupported forces relinking
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+	  ;;
+	esac
+	shared_flag='-shared'
+	if test "$aix_use_runtimelinking" = yes; then
+	  shared_flag="$shared_flag "'${wl}-G'
+	fi
+	_LT_TAGVAR(link_all_deplibs, $1)=no
+      else
+	# not using gcc
+	if test "$host_cpu" = ia64; then
+	# VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	# chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+	else
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag='${wl}-G'
+	  else
+	    shared_flag='${wl}-bM:SRE'
+	  fi
+	fi
+      fi
+
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+      # It seems that -bexpall does not export symbols beginning with
+      # underscore (_), so it is better to generate a list of symbols to export.
+      _LT_TAGVAR(always_export_symbols, $1)=yes
+      if test "$aix_use_runtimelinking" = yes; then
+	# Warning - without using the other runtime loading flags (-brtl),
+	# -berok will link without error, but may produce a broken library.
+	_LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+        # Determine the default libpath from the value encoded in an
+        # empty executable.
+        _LT_SYS_MODULE_PATH_AIX([$1])
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+      else
+	if test "$host_cpu" = ia64; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	  _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+	else
+	 # Determine the default libpath from the value encoded in an
+	 # empty executable.
+	 _LT_SYS_MODULE_PATH_AIX([$1])
+	 _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	  # Warning - without using the other run time loading flags,
+	  # -berok will link without error, but may produce a broken library.
+	  _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	  _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	  if test "$with_gnu_ld" = yes; then
+	    # We only use this code for GNU lds that support --whole-archive.
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	  else
+	    # Exported symbols can be pulled into shared objects from archives
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	  fi
+	  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  # This is similar to how AIX traditionally builds its shared libraries.
+	  _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+	fi
+      fi
+      ;;
+
+    amigaos*)
+      case $host_cpu in
+      powerpc)
+            # see comment about AmigaOS4 .so support
+            _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+            _LT_TAGVAR(archive_expsym_cmds, $1)=''
+        ;;
+      m68k)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
+            _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes
+        ;;
+      esac
+      ;;
+
+    bsdi[[45]]*)
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
+      ;;
+
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      case $cc_basename in
+      cl*)
+	# Native MSVC
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	_LT_TAGVAR(always_export_symbols, $1)=yes
+	_LT_TAGVAR(file_list_spec, $1)='@'
+	# Tell ltmain to make .lib files, not .a files.
+	libext=lib
+	# Tell ltmain to make .dll files, not .so files.
+	shrext_cmds=".dll"
+	# FIXME: Setting linknames here is a bad hack.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+	_LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	    sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+	  else
+	    sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+	  fi~
+	  $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+	  linknames='
+	# The linker will not automatically build a static lib if we build a DLL.
+	# _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+	_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+	_LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
+	_LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1,DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
+	# Don't use ranlib
+	_LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
+	_LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
+	  lt_tool_outputfile="@TOOL_OUTPUT@"~
+	  case $lt_outputfile in
+	    *.exe|*.EXE) ;;
+	    *)
+	      lt_outputfile="$lt_outputfile.exe"
+	      lt_tool_outputfile="$lt_tool_outputfile.exe"
+	      ;;
+	  esac~
+	  if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+	    $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+	    $RM "$lt_outputfile.manifest";
+	  fi'
+	;;
+      *)
+	# Assume MSVC wrapper
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+	_LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	# Tell ltmain to make .lib files, not .a files.
+	libext=lib
+	# Tell ltmain to make .dll files, not .so files.
+	shrext_cmds=".dll"
+	# FIXME: Setting linknames here is a bad hack.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
+	# The linker will automatically build a .lib file if we build a DLL.
+	_LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+	# FIXME: Should let the user specify the lib program.
+	_LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
+	_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+	;;
+      esac
+      ;;
+
+    darwin* | rhapsody*)
+      _LT_DARWIN_LINKER_FEATURES($1)
+      ;;
+
+    dgux*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
+    # support.  Future versions do this automatically, but an explicit c++rt0.o
+    # does not break anything, and helps significantly (at the cost of a little
+    # extra space).
+    freebsd2.2*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # Unfortunately, older versions of FreeBSD 2 do not have this feature.
+    freebsd2.*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
+    freebsd* | dragonfly*)
+      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    hpux9*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+      ;;
+
+    hpux10*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# hardcode_minus_L: Not really in the search PATH,
+	# but as the default location of the library.
+	_LT_TAGVAR(hardcode_minus_L, $1)=yes
+      fi
+      ;;
+
+    hpux11*)
+      if test "$GCC" = yes && test "$with_gnu_ld" = no; then
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	esac
+      else
+	case $host_cpu in
+	hppa*64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	ia64*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	m4_if($1, [], [
+	  # Older versions of the 11.00 compiler do not understand -b yet
+	  # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
+	  _LT_LINKER_OPTION([if $CC understands -b],
+	    _LT_TAGVAR(lt_cv_prog_compiler__b, $1), [-b],
+	    [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'],
+	    [_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'])],
+	  [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'])
+	  ;;
+	esac
+      fi
+      if test "$with_gnu_ld" = no; then
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	case $host_cpu in
+	hppa*64*|ia64*)
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  ;;
+	*)
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+
+	  # hardcode_minus_L: Not really in the search PATH,
+	  # but as the default location of the library.
+	  _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	  ;;
+	esac
+      fi
+      ;;
+
+    irix5* | irix6* | nonstopux*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	# Try to use the -exported_symbol ld option, if it does not
+	# work, assume that -exports_file does not work either and
+	# implicitly export all symbols.
+	# This should be the same for all languages, so no per-tag cache variable.
+	AC_CACHE_CHECK([whether the $host_os linker accepts -exported_symbol],
+	  [lt_cv_irix_exported_symbol],
+	  [save_LDFLAGS="$LDFLAGS"
+	   LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
+	   AC_LINK_IFELSE(
+	     [AC_LANG_SOURCE(
+	        [AC_LANG_CASE([C], [[int foo (void) { return 0; }]],
+			      [C++], [[int foo (void) { return 0; }]],
+			      [Fortran 77], [[
+      subroutine foo
+      end]],
+			      [Fortran], [[
+      subroutine foo
+      end]])])],
+	      [lt_cv_irix_exported_symbol=yes],
+	      [lt_cv_irix_exported_symbol=no])
+           LDFLAGS="$save_LDFLAGS"])
+	if test "$lt_cv_irix_exported_symbol" = yes; then
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
+	fi
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(inherit_rpath, $1)=yes
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    netbsd* | netbsdelf*-gnu)
+      if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'  # a.out
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags'      # ELF
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    newsos6)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *nto* | *qnx*)
+      ;;
+
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+	_LT_TAGVAR(hardcode_direct, $1)=yes
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	else
+	  case $host_os in
+	   openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
+	     _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	     ;;
+	   *)
+	     _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
+	     _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	     ;;
+	  esac
+	fi
+      else
+	_LT_TAGVAR(ld_shlibs, $1)=no
+      fi
+      ;;
+
+    os2*)
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+      _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
+      _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
+      ;;
+
+    osf3*)
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    osf4* | osf5*)	# as osf3* with the addition of -msym flag
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+      else
+	_LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
+	$CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
+
+	# Both c and cxx compiler support -rpath directly
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+      fi
+      _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+      ;;
+
+    solaris*)
+      _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+      if test "$GCC" = yes; then
+	wlarc='${wl}'
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+      else
+	case `$CC -V 2>&1` in
+	*"Compilers 5.0"*)
+	  wlarc=''
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
+	  ;;
+	*)
+	  wlarc='${wl}'
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	  $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+	  ;;
+	esac
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      case $host_os in
+      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+      *)
+	# The compiler driver will combine and reorder linker options,
+	# but understands `-z linker_flag'.  GCC discards it without `$wl',
+	# but is careful enough not to reorder.
+	# Supported since Solaris 2.6 (maybe 2.5.1?)
+	if test "$GCC" = yes; then
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+	else
+	  _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	fi
+	;;
+      esac
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      ;;
+
+    sunos4*)
+      if test "x$host_vendor" = xsequent; then
+	# Use $CC to link under sequent, because it throws in some extra .o
+	# files that make .init and .fini sections work.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
+      fi
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_direct, $1)=yes
+      _LT_TAGVAR(hardcode_minus_L, $1)=yes
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4)
+      case $host_vendor in
+	sni)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
+	;;
+	siemens)
+	  ## LD is ld it makes a PLAMLIB
+	  ## CC just makes a GrossModule.
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
+	  _LT_TAGVAR(hardcode_direct, $1)=no
+        ;;
+	motorola)
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	  _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
+	;;
+      esac
+      runpath_var='LD_RUN_PATH'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    sysv4.3*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
+      ;;
+
+    sysv4*MP*)
+      if test -d /usr/nec; then
+	_LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	runpath_var=LD_RUN_PATH
+	hardcode_runpath_var=yes
+	_LT_TAGVAR(ld_shlibs, $1)=yes
+      fi
+      ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    sysv5* | sco3.2v5* | sco5v6*)
+      # Note: We can NOT use -z defs as we might desire, because we do not
+      # link with -lc, and that would cause any symbols used from libc to
+      # always be unresolved, which means just about no library would
+      # ever link correctly.  If we're not using GNU ld we use -z text
+      # though, which does catch some bad symbols but isn't as heavy-handed
+      # as -z defs.
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+      _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+      _LT_TAGVAR(link_all_deplibs, $1)=yes
+      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+      runpath_var='LD_RUN_PATH'
+
+      if test "$GCC" = yes; then
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      else
+	_LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+      fi
+      ;;
+
+    uts4*)
+      _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
+      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      ;;
+
+    *)
+      _LT_TAGVAR(ld_shlibs, $1)=no
+      ;;
+    esac
+
+    if test x$host_vendor = xsni; then
+      case $host in
+      sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
+	;;
+      esac
+    fi
+  fi
+])
+AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
+
+_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
+_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
+_LT_DECL([], [extract_expsyms_cmds], [2],
+    [The commands to extract the exported symbol list from a shared archive])
+
+#
+# Do we need to explicitly link libc?
+#
+case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
+x|xyes)
+  # Assume -lc should be added
+  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+
+  if test "$enable_shared" = yes && test "$GCC" = yes; then
+    case $_LT_TAGVAR(archive_cmds, $1) in
+    *'~'*)
+      # FIXME: we may have to deal with multi-command sequences.
+      ;;
+    '$CC '*)
+      # Test whether the compiler implicitly links with -lc since on some
+      # systems, -lgcc has to come before -lc. If gcc already passes -lc
+      # to ld, don't add -lc before -lgcc.
+      AC_CACHE_CHECK([whether -lc should be explicitly linked in],
+	[lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1),
+	[$RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+
+	if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+	  soname=conftest
+	  lib=conftest
+	  libobjs=conftest.$ac_objext
+	  deplibs=
+	  wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+	  pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+	  compiler_flags=-v
+	  linker_flags=-v
+	  verstring=
+	  output_objdir=.
+	  libname=conftest
+	  lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+	  _LT_TAGVAR(allow_undefined_flag, $1)=
+	  if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+	  then
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	  else
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	  fi
+	  _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+	else
+	  cat conftest.err 1>&5
+	fi
+	$RM conftest*
+	])
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)
+      ;;
+    esac
+  fi
+  ;;
+esac
+
+_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
+    [Whether or not to add -lc for building shared libraries])
+_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
+    [enable_shared_with_static_runtimes], [0],
+    [Whether or not to disallow shared libs when runtime libs are static])
+_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
+    [Compiler flag to allow reflexive dlopens])
+_LT_TAGDECL([], [whole_archive_flag_spec], [1],
+    [Compiler flag to generate shared objects directly from archives])
+_LT_TAGDECL([], [compiler_needs_object], [1],
+    [Whether the compiler copes with passing no objects directly])
+_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
+    [Create an old-style archive from a shared archive])
+_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
+    [Create a temporary old-style archive to link instead of a shared archive])
+_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
+_LT_TAGDECL([], [archive_expsym_cmds], [2])
+_LT_TAGDECL([], [module_cmds], [2],
+    [Commands used to build a loadable module if different from building
+    a shared archive.])
+_LT_TAGDECL([], [module_expsym_cmds], [2])
+_LT_TAGDECL([], [with_gnu_ld], [1],
+    [Whether we are building with GNU ld or not])
+_LT_TAGDECL([], [allow_undefined_flag], [1],
+    [Flag that allows shared libraries with undefined symbols to be built])
+_LT_TAGDECL([], [no_undefined_flag], [1],
+    [Flag that enforces no undefined symbols])
+_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
+    [Flag to hardcode $libdir into a binary during linking.
+    This must work even if $libdir does not exist])
+_LT_TAGDECL([], [hardcode_libdir_separator], [1],
+    [Whether we need a single "-rpath" flag with a separated argument])
+_LT_TAGDECL([], [hardcode_direct], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary])
+_LT_TAGDECL([], [hardcode_direct_absolute], [0],
+    [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
+    DIR into the resulting binary and the resulting library dependency is
+    "absolute", i.e impossible to change by setting ${shlibpath_var} if the
+    library is relocated])
+_LT_TAGDECL([], [hardcode_minus_L], [0],
+    [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
+    [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
+    into the resulting binary])
+_LT_TAGDECL([], [hardcode_automatic], [0],
+    [Set to "yes" if building a shared library automatically hardcodes DIR
+    into the library and all subsequent libraries and executables linked
+    against it])
+_LT_TAGDECL([], [inherit_rpath], [0],
+    [Set to yes if linker adds runtime paths of dependent libraries
+    to runtime path list])
+_LT_TAGDECL([], [link_all_deplibs], [0],
+    [Whether libtool must link a program against all its dependency libraries])
+_LT_TAGDECL([], [always_export_symbols], [0],
+    [Set to "yes" if exported symbols are required])
+_LT_TAGDECL([], [export_symbols_cmds], [2],
+    [The commands to list exported symbols])
+_LT_TAGDECL([], [exclude_expsyms], [1],
+    [Symbols that should not be listed in the preloaded symbols])
+_LT_TAGDECL([], [include_expsyms], [1],
+    [Symbols that must always be exported])
+_LT_TAGDECL([], [prelink_cmds], [2],
+    [Commands necessary for linking programs (against libraries) with templates])
+_LT_TAGDECL([], [postlink_cmds], [2],
+    [Commands necessary for finishing linking programs])
+_LT_TAGDECL([], [file_list_spec], [1],
+    [Specify filename containing input files])
+dnl FIXME: Not yet implemented
+dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
+dnl    [Compiler flag to generate thread safe objects])
+])# _LT_LINKER_SHLIBS
+
+
+# _LT_LANG_C_CONFIG([TAG])
+# ------------------------
+# Ensure that the configuration variables for a C compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_C_CONFIG],
+[m4_require([_LT_DECL_EGREP])dnl
+lt_save_CC="$CC"
+AC_LANG_PUSH(C)
+
+# Source file extension for C test sources.
+ac_ext=c
+
+# Object file extension for compiled C test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="int some_variable = 0;"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='int main(){return(0);}'
+
+_LT_TAG_COMPILER
+# Save the default compiler, since it gets overwritten when the other
+# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
+compiler_DEFAULT=$CC
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_SYS_DYNAMIC_LINKER($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+  LT_SYS_DLOPEN_SELF
+  _LT_CMD_STRIPLIB
+
+  # Report which library types will actually be built
+  AC_MSG_CHECKING([if libtool supports shared libraries])
+  AC_MSG_RESULT([$can_build_shared])
+
+  AC_MSG_CHECKING([whether to build shared libraries])
+  test "$can_build_shared" = "no" && enable_shared=no
+
+  # On AIX, shared libraries and static libraries use the same namespace, and
+  # are all built from PIC.
+  case $host_os in
+  aix3*)
+    test "$enable_shared" = yes && enable_static=no
+    if test -n "$RANLIB"; then
+      archive_cmds="$archive_cmds~\$RANLIB \$lib"
+      postinstall_cmds='$RANLIB $lib'
+    fi
+    ;;
+
+  aix[[4-9]]*)
+    if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+      test "$enable_shared" = yes && enable_static=no
+    fi
+    ;;
+  esac
+  AC_MSG_RESULT([$enable_shared])
+
+  AC_MSG_CHECKING([whether to build static libraries])
+  # Make sure either enable_shared or enable_static is yes.
+  test "$enable_shared" = yes || enable_static=yes
+  AC_MSG_RESULT([$enable_static])
+
+  _LT_CONFIG($1)
+fi
+AC_LANG_POP
+CC="$lt_save_CC"
+])# _LT_LANG_C_CONFIG
+
+
+# _LT_LANG_CXX_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a C++ compiler are suitably
+# defined.  These variables are subsequently used by _LT_CONFIG to write
+# the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_CXX_CONFIG],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+m4_require([_LT_DECL_EGREP])dnl
+m4_require([_LT_PATH_MANIFEST_TOOL])dnl
+if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
+    ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
+    (test "X$CXX" != "Xg++"))) ; then
+  AC_PROG_CXXCPP
+else
+  _lt_caught_CXX_error=yes
+fi
+
+AC_LANG_PUSH(C++)
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(compiler_needs_object, $1)=no
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for C++ test sources.
+ac_ext=cpp
+
+# Object file extension for compiled C++ test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the CXX compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_caught_CXX_error" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="int some_variable = 0;"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC=$CC
+  lt_save_CFLAGS=$CFLAGS
+  lt_save_LD=$LD
+  lt_save_GCC=$GCC
+  GCC=$GXX
+  lt_save_with_gnu_ld=$with_gnu_ld
+  lt_save_path_LD=$lt_cv_path_LD
+  if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
+    lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
+  else
+    $as_unset lt_cv_prog_gnu_ld
+  fi
+  if test -n "${lt_cv_path_LDCXX+set}"; then
+    lt_cv_path_LD=$lt_cv_path_LDCXX
+  else
+    $as_unset lt_cv_path_LD
+  fi
+  test -z "${LDCXX+set}" || LD=$LDCXX
+  CC=${CXX-"c++"}
+  CFLAGS=$CXXFLAGS
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    # We don't want -fno-exception when compiling C++ code, so set the
+    # no_builtin_flag separately
+    if test "$GXX" = yes; then
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
+    else
+      _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
+    fi
+
+    if test "$GXX" = yes; then
+      # Set up default GNU C++ configuration
+
+      LT_PATH_LD
+
+      # Check if GNU C++ uses GNU ld as the underlying linker, since the
+      # archiving commands below assume that GNU ld is being used.
+      if test "$with_gnu_ld" = yes; then
+        _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+        # If archive_cmds runs LD, not CC, wlarc should be empty
+        # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
+        #     investigate it a little bit more. (MM)
+        wlarc='${wl}'
+
+        # ancient GNU ld didn't support --whole-archive et. al.
+        if eval "`$CC -print-prog-name=ld` --help 2>&1" |
+	  $GREP 'no-whole-archive' > /dev/null; then
+          _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+        else
+          _LT_TAGVAR(whole_archive_flag_spec, $1)=
+        fi
+      else
+        with_gnu_ld=no
+        wlarc=
+
+        # A generic and very simple default shared library creation
+        # command for GNU C++ for the case where it uses the native
+        # linker, instead of GNU ld.  If possible, this setting should
+        # overridden to take advantage of the native linker features on
+        # the platform it is being used on.
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+      fi
+
+      # Commands to make compiler produce verbose output that lists
+      # what "hidden" libraries, object files and flags are used when
+      # linking a shared library.
+      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+    else
+      GXX=no
+      with_gnu_ld=no
+      wlarc=
+    fi
+
+    # PORTME: fill in a description of your system's C++ link characteristics
+    AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
+    _LT_TAGVAR(ld_shlibs, $1)=yes
+    case $host_os in
+      aix3*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+      aix[[4-9]]*)
+        if test "$host_cpu" = ia64; then
+          # On IA64, the linker does run time linking by default, so we don't
+          # have to do anything special.
+          aix_use_runtimelinking=no
+          exp_sym_flag='-Bexport'
+          no_entry_flag=""
+        else
+          aix_use_runtimelinking=no
+
+          # Test if we are trying to use run time linking or normal
+          # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+          # need to do runtime linking.
+          case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
+	    for ld_flag in $LDFLAGS; do
+	      case $ld_flag in
+	      *-brtl*)
+	        aix_use_runtimelinking=yes
+	        break
+	        ;;
+	      esac
+	    done
+	    ;;
+          esac
+
+          exp_sym_flag='-bexport'
+          no_entry_flag='-bnoentry'
+        fi
+
+        # When large executables or shared objects are built, AIX ld can
+        # have problems creating the table of contents.  If linking a library
+        # or program results in "error TOC overflow" add -mminimal-toc to
+        # CXXFLAGS/CFLAGS for g++/gcc.  In the cases where that is not
+        # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
+
+        _LT_TAGVAR(archive_cmds, $1)=''
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
+
+        if test "$GXX" = yes; then
+          case $host_os in aix4.[[012]]|aix4.[[012]].*)
+          # We only want to do this on AIX 4.2 and lower, the check
+          # below for broken collect2 doesn't work under 4.3+
+	  collect2name=`${CC} -print-prog-name=collect2`
+	  if test -f "$collect2name" &&
+	     strings "$collect2name" | $GREP resolve_lib_name >/dev/null
+	  then
+	    # We have reworked collect2
+	    :
+	  else
+	    # We have old collect2
+	    _LT_TAGVAR(hardcode_direct, $1)=unsupported
+	    # It fails to find uninstalled libraries when the uninstalled
+	    # path is not listed in the libpath.  Setting hardcode_minus_L
+	    # to unsupported forces relinking
+	    _LT_TAGVAR(hardcode_minus_L, $1)=yes
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=
+	  fi
+          esac
+          shared_flag='-shared'
+	  if test "$aix_use_runtimelinking" = yes; then
+	    shared_flag="$shared_flag "'${wl}-G'
+	  fi
+        else
+          # not using gcc
+          if test "$host_cpu" = ia64; then
+	  # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
+	  # chokes on -Wl,-G. The following line is correct:
+	  shared_flag='-G'
+          else
+	    if test "$aix_use_runtimelinking" = yes; then
+	      shared_flag='${wl}-G'
+	    else
+	      shared_flag='${wl}-bM:SRE'
+	    fi
+          fi
+        fi
+
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
+        # It seems that -bexpall does not export symbols beginning with
+        # underscore (_), so it is better to generate a list of symbols to
+	# export.
+        _LT_TAGVAR(always_export_symbols, $1)=yes
+        if test "$aix_use_runtimelinking" = yes; then
+          # Warning - without using the other runtime loading flags (-brtl),
+          # -berok will link without error, but may produce a broken library.
+          _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
+          # Determine the default libpath from the value encoded in an empty
+          # executable.
+          _LT_SYS_MODULE_PATH_AIX([$1])
+          _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+
+          _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
+        else
+          if test "$host_cpu" = ia64; then
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
+	    _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
+          else
+	    # Determine the default libpath from the value encoded in an
+	    # empty executable.
+	    _LT_SYS_MODULE_PATH_AIX([$1])
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
+	    # Warning - without using the other run time loading flags,
+	    # -berok will link without error, but may produce a broken library.
+	    _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
+	    _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
+	    if test "$with_gnu_ld" = yes; then
+	      # We only use this code for GNU lds that support --whole-archive.
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    else
+	      # Exported symbols can be pulled into shared objects from archives
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
+	    fi
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	    # This is similar to how AIX traditionally builds its shared
+	    # libraries.
+	    _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
+          fi
+        fi
+        ;;
+
+      beos*)
+	if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
+	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	  # Joseph Beckenbach  says some releases of gcc
+	  # support --undefined.  This deserves some investigation.  FIXME
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      chorus*)
+        case $cc_basename in
+          *)
+	  # FIXME: insert proper C++ library support
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	  ;;
+        esac
+        ;;
+
+      cygwin* | mingw* | pw32* | cegcc*)
+	case $GXX,$cc_basename in
+	,cl* | no,cl*)
+	  # Native MSVC
+	  # hardcode_libdir_flag_spec is actually meaningless, as there is
+	  # no search path for DLLs.
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
+	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	  _LT_TAGVAR(always_export_symbols, $1)=yes
+	  _LT_TAGVAR(file_list_spec, $1)='@'
+	  # Tell ltmain to make .lib files, not .a files.
+	  libext=lib
+	  # Tell ltmain to make .dll files, not .so files.
+	  shrext_cmds=".dll"
+	  # FIXME: Setting linknames here is a bad hack.
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	      $SED -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
+	    else
+	      $SED -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
+	    fi~
+	    $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
+	    linknames='
+	  # The linker will not automatically build a static lib if we build a DLL.
+	  # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
+	  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+	  # Don't use ranlib
+	  _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
+	  _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
+	    lt_tool_outputfile="@TOOL_OUTPUT@"~
+	    case $lt_outputfile in
+	      *.exe|*.EXE) ;;
+	      *)
+		lt_outputfile="$lt_outputfile.exe"
+		lt_tool_outputfile="$lt_tool_outputfile.exe"
+		;;
+	    esac~
+	    func_to_tool_file "$lt_outputfile"~
+	    if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
+	      $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
+	      $RM "$lt_outputfile.manifest";
+	    fi'
+	  ;;
+	*)
+	  # g++
+	  # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
+	  # as there is no search path for DLLs.
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
+	  _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
+	  _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
+	  _LT_TAGVAR(always_export_symbols, $1)=no
+	  _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
+
+	  if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	    # If the export-symbols file already is a .def file (1st line
+	    # is EXPORTS), use it as is; otherwise, prepend...
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
+	      cp $export_symbols $output_objdir/$soname.def;
+	    else
+	      echo EXPORTS > $output_objdir/$soname.def;
+	      cat $export_symbols >> $output_objdir/$soname.def;
+	    fi~
+	    $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
+	  else
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	  fi
+	  ;;
+	esac
+	;;
+      darwin* | rhapsody*)
+        _LT_DARWIN_LINKER_FEATURES($1)
+	;;
+
+      dgux*)
+        case $cc_basename in
+          ec++*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          ghcx*)
+	    # Green Hills C++ Compiler
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      freebsd2.*)
+        # C++ shared libraries reported to be fairly broken before
+	# switch to ELF
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      freebsd-elf*)
+        _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+        ;;
+
+      freebsd* | dragonfly*)
+        # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
+        # conventions
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+        ;;
+
+      gnu*)
+        ;;
+
+      haiku*)
+        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+        _LT_TAGVAR(link_all_deplibs, $1)=yes
+        ;;
+
+      hpux9*)
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+        _LT_TAGVAR(hardcode_direct, $1)=yes
+        _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+				             # but as the default
+				             # location of the library.
+
+        case $cc_basename in
+          CC*)
+            # FIXME: insert proper C++ library support
+            _LT_TAGVAR(ld_shlibs, $1)=no
+            ;;
+          aCC*)
+            _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            # Commands to make compiler produce verbose output that lists
+            # what "hidden" libraries, object files and flags are used when
+            # linking a shared library.
+            #
+            # There doesn't appear to be a way to prevent this compiler from
+            # explicitly linking system object files so we need to strip them
+            # from the output so that they don't get included in the library
+            # dependencies.
+            output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+            ;;
+          *)
+            if test "$GXX" = yes; then
+              _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
+            else
+              # FIXME: insert proper C++ library support
+              _LT_TAGVAR(ld_shlibs, $1)=no
+            fi
+            ;;
+        esac
+        ;;
+
+      hpux10*|hpux11*)
+        if test $with_gnu_ld = no; then
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
+	  _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+          case $host_cpu in
+            hppa*64*|ia64*)
+              ;;
+            *)
+	      _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+              ;;
+          esac
+        fi
+        case $host_cpu in
+          hppa*64*|ia64*)
+            _LT_TAGVAR(hardcode_direct, $1)=no
+            _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+            ;;
+          *)
+            _LT_TAGVAR(hardcode_direct, $1)=yes
+            _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+            _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
+					         # but as the default
+					         # location of the library.
+            ;;
+        esac
+
+        case $cc_basename in
+          CC*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          aCC*)
+	    case $host_cpu in
+	      hppa*64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      ia64*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	      *)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	        ;;
+	    esac
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test $with_gnu_ld = no; then
+	        case $host_cpu in
+	          hppa*64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          ia64*)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	          *)
+	            _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	            ;;
+	        esac
+	      fi
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      interix[[3-9]]*)
+	_LT_TAGVAR(hardcode_direct, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	# Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
+	# Instead, shared libraries are loaded at an image base (0x10000000 by
+	# default) and relocated if they conflict, which is a slow very memory
+	# consuming and fragmenting process.  To avoid this, we pick a random,
+	# 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
+	# time.  Moving up from 0x10000000 also allows more sbrk(2) space.
+	_LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	_LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
+	;;
+      irix5* | irix6*)
+        case $cc_basename in
+          CC*)
+	    # SGI C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -ar", where "CC" is the IRIX C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    if test "$GXX" = yes; then
+	      if test "$with_gnu_ld" = no; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+	      else
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
+	      fi
+	    fi
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+	    ;;
+        esac
+        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+        _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+        _LT_TAGVAR(inherit_rpath, $1)=yes
+        ;;
+
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -Bstatic", where "CC" is the KAI C++ compiler.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
+	    ;;
+	  icpc* | ecpc* )
+	    # Intel C++
+	    with_gnu_ld=yes
+	    # version 8.0 and above of icpc choke on multiply defined symbols
+	    # if we add $predep_objects and $postdep_objects, however 7.1 and
+	    # earlier do not add the objects themselves.
+	    case `$CC -V 2>&1` in
+	      *"Version 7."*)
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	      *)  # Version 8.0 or newer
+	        tmp_idyn=
+	        case $host_cpu in
+		  ia64*) tmp_idyn=' -i_dynamic';;
+		esac
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+		_LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+		;;
+	    esac
+	    _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
+	    ;;
+          pgCC* | pgcpp*)
+            # Portland Group C++ compiler
+	    case `$CC -V` in
+	    *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*)
+	      _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
+		compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"'
+	      _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
+		$AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~
+		$RANLIB $oldlib'
+	      _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
+		rm -rf $tpldir~
+		$CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
+		$CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    *) # Version 6 and above use weak symbols
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
+	      ;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test  -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+            ;;
+	  cxx*)
+	    # Compaq C++
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname  -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
+
+	    runpath_var=LD_RUN_PATH
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "X$list" | $Xsed'
+	    ;;
+	  xl* | mpixl* | bgxl*)
+	    # IBM XL 8.0 on PPC, with GNU ld
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+	    if test "x$supports_anon_versioning" = xyes; then
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
+		cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
+		echo "local: *; };" >> $output_objdir/$libname.ver~
+		$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
+	    fi
+	    ;;
+	  *)
+	    case `$CC -V 2>&1 | sed 5q` in
+	    *Sun\ C*)
+	      # Sun C++ 5.9
+	      _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	      _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	      _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	      _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
+	      _LT_TAGVAR(compiler_needs_object, $1)=yes
+
+	      # Not sure whether something based on
+	      # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
+	      # would be better.
+	      output_verbose_link_cmd='func_echo_all'
+
+	      # Archives containing C++ object files must be created using
+	      # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	      # necessary to make sure instantiated templates are included
+	      # in the archive.
+	      _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	      ;;
+	    esac
+	    ;;
+	esac
+	;;
+
+      lynxos*)
+        # FIXME: insert proper C++ library support
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      m88k*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      mvs*)
+        case $cc_basename in
+          cxx*)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	  *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+	esac
+	;;
+
+      netbsd*)
+        if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
+	  _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable  -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+	  wlarc=
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	fi
+	# Workaround some broken pre-1.5 toolchains
+	output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+	;;
+
+      *nto* | *qnx*)
+        _LT_TAGVAR(ld_shlibs, $1)=yes
+	;;
+
+      openbsd2*)
+        # C++ shared libraries are fairly broken
+	_LT_TAGVAR(ld_shlibs, $1)=no
+	;;
+
+      openbsd*)
+	if test -f /usr/libexec/ld.so; then
+	  _LT_TAGVAR(hardcode_direct, $1)=yes
+	  _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	  _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
+	  _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	  if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
+	    _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
+	    _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
+	  fi
+	  output_verbose_link_cmd=func_echo_all
+	else
+	  _LT_TAGVAR(ld_shlibs, $1)=no
+	fi
+	;;
+
+      osf3* | osf4* | osf5*)
+        case $cc_basename in
+          KCC*)
+	    # Kuck and Associates, Inc. (KAI) C++ Compiler
+
+	    # KCC will only create a shared library if the output file
+	    # ends with ".so" (or ".sl" for HP-UX), so rename the library
+	    # to its proper name (with version) after linking.
+	    _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Archives containing C++ object files must be created using
+	    # the KAI C++ compiler.
+	    case $host in
+	      osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
+	      *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
+	    esac
+	    ;;
+          RCC*)
+	    # Rational C++ 2.4.1
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          cxx*)
+	    case $host in
+	      osf3*)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && func_echo_all "${wl}-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+		;;
+	      *)
+	        _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
+	          echo "-hidden">> $lib.exp~
+	          $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp  `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~
+	          $RM $lib.exp'
+	        _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
+		;;
+	    esac
+
+	    _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	    # Commands to make compiler produce verbose output that lists
+	    # what "hidden" libraries, object files and flags are used when
+	    # linking a shared library.
+	    #
+	    # There doesn't appear to be a way to prevent this compiler from
+	    # explicitly linking system object files so we need to strip them
+	    # from the output so that they don't get included in the library
+	    # dependencies.
+	    output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+	    ;;
+	  *)
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
+	      case $host in
+	        osf3*)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	        *)
+	          _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
+		  ;;
+	      esac
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
+	      _LT_TAGVAR(hardcode_libdir_separator, $1)=:
+
+	      # Commands to make compiler produce verbose output that lists
+	      # what "hidden" libraries, object files and flags are used when
+	      # linking a shared library.
+	      output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+
+	    else
+	      # FIXME: insert proper C++ library support
+	      _LT_TAGVAR(ld_shlibs, $1)=no
+	    fi
+	    ;;
+        esac
+        ;;
+
+      psos*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      sunos4*)
+        case $cc_basename in
+          CC*)
+	    # Sun C++ 4.x
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          lcc*)
+	    # Lucid
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      solaris*)
+        case $cc_basename in
+          CC* | sunCC*)
+	    # Sun C++ 4.2, 5.x and Centerline C++
+            _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
+	    _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag}  -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+	      $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	    _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
+	    _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	    case $host_os in
+	      solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+	      *)
+		# The compiler driver will combine and reorder linker options,
+		# but understands `-z linker_flag'.
+	        # Supported since Solaris 2.6 (maybe 2.5.1?)
+		_LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
+	        ;;
+	    esac
+	    _LT_TAGVAR(link_all_deplibs, $1)=yes
+
+	    output_verbose_link_cmd='func_echo_all'
+
+	    # Archives containing C++ object files must be created using
+	    # "CC -xar", where "CC" is the Sun C++ compiler.  This is
+	    # necessary to make sure instantiated templates are included
+	    # in the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
+	    ;;
+          gcx*)
+	    # Green Hills C++ Compiler
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+
+	    # The C++ compiler must be used to create the archive.
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
+	    ;;
+          *)
+	    # GNU C++ compiler with Solaris linker
+	    if test "$GXX" = yes && test "$with_gnu_ld" = no; then
+	      _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
+	      if $CC --version | $GREP -v '^2\.7' > /dev/null; then
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -shared $pic_flag -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      else
+	        # g++ 2.7 appears to require `-G' NOT `-shared' on this
+	        # platform.
+	        _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
+	        _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
+		  $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+
+	        # Commands to make compiler produce verbose output that lists
+	        # what "hidden" libraries, object files and flags are used when
+	        # linking a shared library.
+	        output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+	      fi
+
+	      _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
+	      case $host_os in
+		solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
+		*)
+		  _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
+		  ;;
+	      esac
+	    fi
+	    ;;
+        esac
+        ;;
+
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
+      _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+      _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+      runpath_var='LD_RUN_PATH'
+
+      case $cc_basename in
+        CC*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+	*)
+	  _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	  ;;
+      esac
+      ;;
+
+      sysv5* | sco3.2v5* | sco5v6*)
+	# Note: We can NOT use -z defs as we might desire, because we do not
+	# link with -lc, and that would cause any symbols used from libc to
+	# always be unresolved, which means just about no library would
+	# ever link correctly.  If we're not using GNU ld we use -z text
+	# though, which does catch some bad symbols but isn't as heavy-handed
+	# as -z defs.
+	_LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
+	_LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
+	_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	_LT_TAGVAR(hardcode_shlibpath_var, $1)=no
+	_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
+	_LT_TAGVAR(hardcode_libdir_separator, $1)=':'
+	_LT_TAGVAR(link_all_deplibs, $1)=yes
+	_LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
+	runpath_var='LD_RUN_PATH'
+
+	case $cc_basename in
+          CC*)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(old_archive_cmds, $1)='$CC -Tprelink_objects $oldobjs~
+	      '"$_LT_TAGVAR(old_archive_cmds, $1)"
+	    _LT_TAGVAR(reload_cmds, $1)='$CC -Tprelink_objects $reload_objs~
+	      '"$_LT_TAGVAR(reload_cmds, $1)"
+	    ;;
+	  *)
+	    _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
+	    ;;
+	esac
+      ;;
+
+      tandem*)
+        case $cc_basename in
+          NCC*)
+	    # NonStop-UX NCC 3.20
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+          *)
+	    # FIXME: insert proper C++ library support
+	    _LT_TAGVAR(ld_shlibs, $1)=no
+	    ;;
+        esac
+        ;;
+
+      vxworks*)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+
+      *)
+        # FIXME: insert proper C++ library support
+        _LT_TAGVAR(ld_shlibs, $1)=no
+        ;;
+    esac
+
+    AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
+    test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
+
+    _LT_TAGVAR(GCC, $1)="$GXX"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  CC=$lt_save_CC
+  CFLAGS=$lt_save_CFLAGS
+  LDCXX=$LD
+  LD=$lt_save_LD
+  GCC=$lt_save_GCC
+  with_gnu_ld=$lt_save_with_gnu_ld
+  lt_cv_path_LDCXX=$lt_cv_path_LD
+  lt_cv_path_LD=$lt_save_path_LD
+  lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
+  lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
+fi # test "$_lt_caught_CXX_error" != yes
+
+AC_LANG_POP
+])# _LT_LANG_CXX_CONFIG
+
+
+# _LT_FUNC_STRIPNAME_CNF
+# ----------------------
+# func_stripname_cnf prefix suffix name
+# strip PREFIX and SUFFIX off of NAME.
+# PREFIX and SUFFIX must not contain globbing or regex special
+# characters, hashes, percent signs, but SUFFIX may contain a leading
+# dot (in which case that matches only a dot).
+#
+# This function is identical to the (non-XSI) version of func_stripname,
+# except this one can be used by m4 code that may be executed by configure,
+# rather than the libtool script.
+m4_defun([_LT_FUNC_STRIPNAME_CNF],[dnl
+AC_REQUIRE([_LT_DECL_SED])
+AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])
+func_stripname_cnf ()
+{
+  case ${2} in
+  .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
+  *)  func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
+  esac
+} # func_stripname_cnf
+])# _LT_FUNC_STRIPNAME_CNF
+
+# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
+# ---------------------------------
+# Figure out "hidden" library dependencies from verbose
+# compiler output when linking a shared library.
+# Parse the compiler output and extract the necessary
+# objects, libraries and library flags.
+m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
+[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
+AC_REQUIRE([_LT_FUNC_STRIPNAME_CNF])dnl
+# Dependencies to place before and after the object being linked:
+_LT_TAGVAR(predep_objects, $1)=
+_LT_TAGVAR(postdep_objects, $1)=
+_LT_TAGVAR(predeps, $1)=
+_LT_TAGVAR(postdeps, $1)=
+_LT_TAGVAR(compiler_lib_search_path, $1)=
+
+dnl we can't use the lt_simple_compile_test_code here,
+dnl because it contains code intended for an executable,
+dnl not a library.  It's possible we should let each
+dnl tag define a new lt_????_link_test_code variable,
+dnl but it's only used here...
+m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
+int a;
+void foo (void) { a = 0; }
+_LT_EOF
+], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
+class Foo
+{
+public:
+  Foo (void) { a = 0; }
+private:
+  int a;
+};
+_LT_EOF
+], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer*4 a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
+      subroutine foo
+      implicit none
+      integer a
+      a=0
+      return
+      end
+_LT_EOF
+], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
+public class foo {
+  private int a;
+  public void bar (void) {
+    a = 0;
+  }
+};
+_LT_EOF
+], [$1], [GO], [cat > conftest.$ac_ext <<_LT_EOF
+package foo
+func foo() {
+}
+_LT_EOF
+])
+
+_lt_libdeps_save_CFLAGS=$CFLAGS
+case "$CC $CFLAGS " in #(
+*\ -flto*\ *) CFLAGS="$CFLAGS -fno-lto" ;;
+*\ -fwhopr*\ *) CFLAGS="$CFLAGS -fno-whopr" ;;
+*\ -fuse-linker-plugin*\ *) CFLAGS="$CFLAGS -fno-use-linker-plugin" ;;
+esac
+
+dnl Parse the compiler output and extract the necessary
+dnl objects, libraries and library flags.
+if AC_TRY_EVAL(ac_compile); then
+  # Parse the compiler output and extract the necessary
+  # objects, libraries and library flags.
+
+  # Sentinel used to keep track of whether or not we are before
+  # the conftest object file.
+  pre_test_object_deps_done=no
+
+  for p in `eval "$output_verbose_link_cmd"`; do
+    case ${prev}${p} in
+
+    -L* | -R* | -l*)
+       # Some compilers place space between "-{L,R}" and the path.
+       # Remove the space.
+       if test $p = "-L" ||
+          test $p = "-R"; then
+	 prev=$p
+	 continue
+       fi
+
+       # Expand the sysroot to ease extracting the directories later.
+       if test -z "$prev"; then
+         case $p in
+         -L*) func_stripname_cnf '-L' '' "$p"; prev=-L; p=$func_stripname_result ;;
+         -R*) func_stripname_cnf '-R' '' "$p"; prev=-R; p=$func_stripname_result ;;
+         -l*) func_stripname_cnf '-l' '' "$p"; prev=-l; p=$func_stripname_result ;;
+         esac
+       fi
+       case $p in
+       =*) func_stripname_cnf '=' '' "$p"; p=$lt_sysroot$func_stripname_result ;;
+       esac
+       if test "$pre_test_object_deps_done" = no; then
+	 case ${prev} in
+	 -L | -R)
+	   # Internal compiler library paths should come after those
+	   # provided the user.  The postdeps already come after the
+	   # user supplied libs so there is no need to process them.
+	   if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
+	   else
+	     _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
+	   fi
+	   ;;
+	 # The "-l" case would never come before the object being
+	 # linked, so don't bother handling this case.
+	 esac
+       else
+	 if test -z "$_LT_TAGVAR(postdeps, $1)"; then
+	   _LT_TAGVAR(postdeps, $1)="${prev}${p}"
+	 else
+	   _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
+	 fi
+       fi
+       prev=
+       ;;
+
+    *.lto.$objext) ;; # Ignore GCC LTO objects
+    *.$objext)
+       # This assumes that the test object file only shows up
+       # once in the compiler output.
+       if test "$p" = "conftest.$objext"; then
+	 pre_test_object_deps_done=yes
+	 continue
+       fi
+
+       if test "$pre_test_object_deps_done" = no; then
+	 if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
+	   _LT_TAGVAR(predep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
+	 fi
+       else
+	 if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
+	   _LT_TAGVAR(postdep_objects, $1)="$p"
+	 else
+	   _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
+	 fi
+       fi
+       ;;
+
+    *) ;; # Ignore the rest.
+
+    esac
+  done
+
+  # Clean up.
+  rm -f a.out a.exe
+else
+  echo "libtool.m4: error: problem compiling $1 test program"
+fi
+
+$RM -f confest.$objext
+CFLAGS=$_lt_libdeps_save_CFLAGS
+
+# PORTME: override above test on systems where it is broken
+m4_if([$1], [CXX],
+[case $host_os in
+interix[[3-9]]*)
+  # Interix 3.5 installs completely hosed .la files for C++, so rather than
+  # hack all around it, let's just trust "g++" to DTRT.
+  _LT_TAGVAR(predep_objects,$1)=
+  _LT_TAGVAR(postdep_objects,$1)=
+  _LT_TAGVAR(postdeps,$1)=
+  ;;
+
+linux*)
+  case `$CC -V 2>&1 | sed 5q` in
+  *Sun\ C*)
+    # Sun C++ 5.9
+
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+
+solaris*)
+  case $cc_basename in
+  CC* | sunCC*)
+    # The more standards-conforming stlport4 library is
+    # incompatible with the Cstd library. Avoid specifying
+    # it if it's in CXXFLAGS. Ignore libCrun as
+    # -library=stlport4 depends on it.
+    case " $CXX $CXXFLAGS " in
+    *" -library=stlport4 "*)
+      solaris_use_stlport4=yes
+      ;;
+    esac
+
+    # Adding this requires a known-good setup of shared libraries for
+    # Sun compiler versions before 5.6, else PIC objects from an old
+    # archive will be linked into the output, leading to subtle bugs.
+    if test "$solaris_use_stlport4" != yes; then
+      _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
+    fi
+    ;;
+  esac
+  ;;
+esac
+])
+
+case " $_LT_TAGVAR(postdeps, $1) " in
+*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
+esac
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=
+if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
+ _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
+fi
+_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
+    [The directories searched by this compiler when creating a shared library])
+_LT_TAGDECL([], [predep_objects], [1],
+    [Dependencies to place before and after the objects being linked to
+    create a shared library])
+_LT_TAGDECL([], [postdep_objects], [1])
+_LT_TAGDECL([], [predeps], [1])
+_LT_TAGDECL([], [postdeps], [1])
+_LT_TAGDECL([], [compiler_lib_search_path], [1],
+    [The library search path used internally by the compiler when linking
+    a shared library])
+])# _LT_SYS_HIDDEN_LIBDEPS
+
+
+# _LT_LANG_F77_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for a Fortran 77 compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_F77_CONFIG],
+[AC_LANG_PUSH(Fortran 77)
+if test -z "$F77" || test "X$F77" = "Xno"; then
+  _lt_disable_F77=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for f77 test sources.
+ac_ext=f
+
+# Object file extension for compiled f77 test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the F77 compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_F77" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  lt_save_CFLAGS=$CFLAGS
+  CC=${F77-"f77"}
+  CFLAGS=$FFLAGS
+  compiler=$CC
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+  GCC=$G77
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$G77"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC="$lt_save_CC"
+  CFLAGS="$lt_save_CFLAGS"
+fi # test "$_lt_disable_F77" != yes
+
+AC_LANG_POP
+])# _LT_LANG_F77_CONFIG
+
+
+# _LT_LANG_FC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for a Fortran compiler are
+# suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_FC_CONFIG],
+[AC_LANG_PUSH(Fortran)
+
+if test -z "$FC" || test "X$FC" = "Xno"; then
+  _lt_disable_FC=yes
+fi
+
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+_LT_TAGVAR(allow_undefined_flag, $1)=
+_LT_TAGVAR(always_export_symbols, $1)=no
+_LT_TAGVAR(archive_expsym_cmds, $1)=
+_LT_TAGVAR(export_dynamic_flag_spec, $1)=
+_LT_TAGVAR(hardcode_direct, $1)=no
+_LT_TAGVAR(hardcode_direct_absolute, $1)=no
+_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
+_LT_TAGVAR(hardcode_libdir_separator, $1)=
+_LT_TAGVAR(hardcode_minus_L, $1)=no
+_LT_TAGVAR(hardcode_automatic, $1)=no
+_LT_TAGVAR(inherit_rpath, $1)=no
+_LT_TAGVAR(module_cmds, $1)=
+_LT_TAGVAR(module_expsym_cmds, $1)=
+_LT_TAGVAR(link_all_deplibs, $1)=unknown
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+_LT_TAGVAR(no_undefined_flag, $1)=
+_LT_TAGVAR(whole_archive_flag_spec, $1)=
+_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
+
+# Source file extension for fc test sources.
+ac_ext=${ac_fc_srcext-f}
+
+# Object file extension for compiled fc test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# No sense in running all these tests if we already determined that
+# the FC compiler isn't working.  Some variables (like enable_shared)
+# are currently assumed to apply to all compilers on this platform,
+# and will be corrupted by setting them based on a non-working compiler.
+if test "$_lt_disable_FC" != yes; then
+  # Code to be used in simple compile tests
+  lt_simple_compile_test_code="\
+      subroutine t
+      return
+      end
+"
+
+  # Code to be used in simple link tests
+  lt_simple_link_test_code="\
+      program t
+      end
+"
+
+  # ltmain only uses $CC for tagged configurations so make sure $CC is set.
+  _LT_TAG_COMPILER
+
+  # save warnings/boilerplate of simple test code
+  _LT_COMPILER_BOILERPLATE
+  _LT_LINKER_BOILERPLATE
+
+  # Allow CC to be a program name with arguments.
+  lt_save_CC="$CC"
+  lt_save_GCC=$GCC
+  lt_save_CFLAGS=$CFLAGS
+  CC=${FC-"f95"}
+  CFLAGS=$FCFLAGS
+  compiler=$CC
+  GCC=$ac_cv_fc_compiler_gnu
+
+  _LT_TAGVAR(compiler, $1)=$CC
+  _LT_CC_BASENAME([$compiler])
+
+  if test -n "$compiler"; then
+    AC_MSG_CHECKING([if libtool supports shared libraries])
+    AC_MSG_RESULT([$can_build_shared])
+
+    AC_MSG_CHECKING([whether to build shared libraries])
+    test "$can_build_shared" = "no" && enable_shared=no
+
+    # On AIX, shared libraries and static libraries use the same namespace, and
+    # are all built from PIC.
+    case $host_os in
+      aix3*)
+        test "$enable_shared" = yes && enable_static=no
+        if test -n "$RANLIB"; then
+          archive_cmds="$archive_cmds~\$RANLIB \$lib"
+          postinstall_cmds='$RANLIB $lib'
+        fi
+        ;;
+      aix[[4-9]]*)
+	if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
+	  test "$enable_shared" = yes && enable_static=no
+	fi
+        ;;
+    esac
+    AC_MSG_RESULT([$enable_shared])
+
+    AC_MSG_CHECKING([whether to build static libraries])
+    # Make sure either enable_shared or enable_static is yes.
+    test "$enable_shared" = yes || enable_static=yes
+    AC_MSG_RESULT([$enable_static])
+
+    _LT_TAGVAR(GCC, $1)="$ac_cv_fc_compiler_gnu"
+    _LT_TAGVAR(LD, $1)="$LD"
+
+    ## CAVEAT EMPTOR:
+    ## There is no encapsulation within the following macros, do not change
+    ## the running order or otherwise move them around unless you know exactly
+    ## what you are doing...
+    _LT_SYS_HIDDEN_LIBDEPS($1)
+    _LT_COMPILER_PIC($1)
+    _LT_COMPILER_C_O($1)
+    _LT_COMPILER_FILE_LOCKS($1)
+    _LT_LINKER_SHLIBS($1)
+    _LT_SYS_DYNAMIC_LINKER($1)
+    _LT_LINKER_HARDCODE_LIBPATH($1)
+
+    _LT_CONFIG($1)
+  fi # test -n "$compiler"
+
+  GCC=$lt_save_GCC
+  CC=$lt_save_CC
+  CFLAGS=$lt_save_CFLAGS
+fi # test "$_lt_disable_FC" != yes
+
+AC_LANG_POP
+])# _LT_LANG_FC_CONFIG
+
+
+# _LT_LANG_GCJ_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Java Compiler compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GCJ_CONFIG],
+[AC_REQUIRE([LT_PROG_GCJ])dnl
+AC_LANG_SAVE
+
+# Source file extension for Java test sources.
+ac_ext=java
+
+# Object file extension for compiled Java test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="class foo {}"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='public class conftest { public static void main(String[[]] argv) {}; }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC=$CC
+lt_save_CFLAGS=$CFLAGS
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GCJ-"gcj"}
+CFLAGS=$GCJFLAGS
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# GCJ did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+
+  _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
+])# _LT_LANG_GCJ_CONFIG
+
+
+# _LT_LANG_GO_CONFIG([TAG])
+# --------------------------
+# Ensure that the configuration variables for the GNU Go compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_GO_CONFIG],
+[AC_REQUIRE([LT_PROG_GO])dnl
+AC_LANG_SAVE
+
+# Source file extension for Go test sources.
+ac_ext=go
+
+# Object file extension for compiled Go test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code="package main; func main() { }"
+
+# Code to be used in simple link tests
+lt_simple_link_test_code='package main; func main() { }'
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC=$CC
+lt_save_CFLAGS=$CFLAGS
+lt_save_GCC=$GCC
+GCC=yes
+CC=${GOC-"gccgo"}
+CFLAGS=$GOFLAGS
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_TAGVAR(LD, $1)="$LD"
+_LT_CC_BASENAME([$compiler])
+
+# Go did not exist at the time GCC didn't implicitly link libc in.
+_LT_TAGVAR(archive_cmds_need_lc, $1)=no
+
+_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
+_LT_TAGVAR(reload_flag, $1)=$reload_flag
+_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
+
+## CAVEAT EMPTOR:
+## There is no encapsulation within the following macros, do not change
+## the running order or otherwise move them around unless you know exactly
+## what you are doing...
+if test -n "$compiler"; then
+  _LT_COMPILER_NO_RTTI($1)
+  _LT_COMPILER_PIC($1)
+  _LT_COMPILER_C_O($1)
+  _LT_COMPILER_FILE_LOCKS($1)
+  _LT_LINKER_SHLIBS($1)
+  _LT_LINKER_HARDCODE_LIBPATH($1)
+
+  _LT_CONFIG($1)
+fi
+
+AC_LANG_RESTORE
+
+GCC=$lt_save_GCC
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
+])# _LT_LANG_GO_CONFIG
+
+
+# _LT_LANG_RC_CONFIG([TAG])
+# -------------------------
+# Ensure that the configuration variables for the Windows resource compiler
+# are suitably defined.  These variables are subsequently used by _LT_CONFIG
+# to write the compiler configuration to `libtool'.
+m4_defun([_LT_LANG_RC_CONFIG],
+[AC_REQUIRE([LT_PROG_RC])dnl
+AC_LANG_SAVE
+
+# Source file extension for RC test sources.
+ac_ext=rc
+
+# Object file extension for compiled RC test sources.
+objext=o
+_LT_TAGVAR(objext, $1)=$objext
+
+# Code to be used in simple compile tests
+lt_simple_compile_test_code='sample MENU { MENUITEM "&Soup", 100, CHECKED }'
+
+# Code to be used in simple link tests
+lt_simple_link_test_code="$lt_simple_compile_test_code"
+
+# ltmain only uses $CC for tagged configurations so make sure $CC is set.
+_LT_TAG_COMPILER
+
+# save warnings/boilerplate of simple test code
+_LT_COMPILER_BOILERPLATE
+_LT_LINKER_BOILERPLATE
+
+# Allow CC to be a program name with arguments.
+lt_save_CC="$CC"
+lt_save_CFLAGS=$CFLAGS
+lt_save_GCC=$GCC
+GCC=
+CC=${RC-"windres"}
+CFLAGS=
+compiler=$CC
+_LT_TAGVAR(compiler, $1)=$CC
+_LT_CC_BASENAME([$compiler])
+_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
+
+if test -n "$compiler"; then
+  :
+  _LT_CONFIG($1)
+fi
+
+GCC=$lt_save_GCC
+AC_LANG_RESTORE
+CC=$lt_save_CC
+CFLAGS=$lt_save_CFLAGS
+])# _LT_LANG_RC_CONFIG
+
+
+# LT_PROG_GCJ
+# -----------
+AC_DEFUN([LT_PROG_GCJ],
+[m4_ifdef([AC_PROG_GCJ], [AC_PROG_GCJ],
+  [m4_ifdef([A][M_PROG_GCJ], [A][M_PROG_GCJ],
+    [AC_CHECK_TOOL(GCJ, gcj,)
+      test "x${GCJFLAGS+set}" = xset || GCJFLAGS="-g -O2"
+      AC_SUBST(GCJFLAGS)])])[]dnl
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_GCJ], [LT_PROG_GCJ])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_GCJ], [])
+
+
+# LT_PROG_GO
+# ----------
+AC_DEFUN([LT_PROG_GO],
+[AC_CHECK_TOOL(GOC, gccgo,)
+])
+
+
+# LT_PROG_RC
+# ----------
+AC_DEFUN([LT_PROG_RC],
+[AC_CHECK_TOOL(RC, windres,)
+])
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_RC], [LT_PROG_RC])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_RC], [])
+
+
+# _LT_DECL_EGREP
+# --------------
+# If we don't have a new enough Autoconf to choose the best grep
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_EGREP],
+[AC_REQUIRE([AC_PROG_EGREP])dnl
+AC_REQUIRE([AC_PROG_FGREP])dnl
+test -z "$GREP" && GREP=grep
+_LT_DECL([], [GREP], [1], [A grep program that handles long lines])
+_LT_DECL([], [EGREP], [1], [An ERE matcher])
+_LT_DECL([], [FGREP], [1], [A literal string matcher])
+dnl Non-bleeding-edge autoconf doesn't subst GREP, so do it here too
+AC_SUBST([GREP])
+])
+
+
+# _LT_DECL_OBJDUMP
+# --------------
+# If we don't have a new enough Autoconf to choose the best objdump
+# available, choose the one first in the user's PATH.
+m4_defun([_LT_DECL_OBJDUMP],
+[AC_CHECK_TOOL(OBJDUMP, objdump, false)
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [An object symbol dumper])
+AC_SUBST([OBJDUMP])
+])
+
+# _LT_DECL_DLLTOOL
+# ----------------
+# Ensure DLLTOOL variable is set.
+m4_defun([_LT_DECL_DLLTOOL],
+[AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [1], [DLL creation program])
+AC_SUBST([DLLTOOL])
+])
+
+# _LT_DECL_SED
+# ------------
+# Check for a fully-functional sed program, that truncates
+# as few characters as possible.  Prefer GNU sed if found.
+m4_defun([_LT_DECL_SED],
+[AC_PROG_SED
+test -z "$SED" && SED=sed
+Xsed="$SED -e 1s/^X//"
+_LT_DECL([], [SED], [1], [A sed program that does not truncate output])
+_LT_DECL([], [Xsed], ["\$SED -e 1s/^X//"],
+    [Sed that helps us avoid accidentally triggering echo(1) options like -n])
+])# _LT_DECL_SED
+
+m4_ifndef([AC_PROG_SED], [
+############################################################
+# NOTE: This macro has been submitted for inclusion into   #
+#  GNU Autoconf as AC_PROG_SED.  When it is available in   #
+#  a released version of Autoconf we should remove this    #
+#  macro and use it instead.                               #
+############################################################
+
+m4_defun([AC_PROG_SED],
+[AC_MSG_CHECKING([for a sed that does not truncate output])
+AC_CACHE_VAL(lt_cv_path_SED,
+[# Loop through the user's path and test for sed and gsed.
+# Then use that list of sed's as ones to test for truncation.
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for lt_ac_prog in sed gsed; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      if $as_executable_p "$as_dir/$lt_ac_prog$ac_exec_ext"; then
+        lt_ac_sed_list="$lt_ac_sed_list $as_dir/$lt_ac_prog$ac_exec_ext"
+      fi
+    done
+  done
+done
+IFS=$as_save_IFS
+lt_ac_max=0
+lt_ac_count=0
+# Add /usr/xpg4/bin/sed as it is typically found on Solaris
+# along with /bin/sed that truncates output.
+for lt_ac_sed in $lt_ac_sed_list /usr/xpg4/bin/sed; do
+  test ! -f $lt_ac_sed && continue
+  cat /dev/null > conftest.in
+  lt_ac_count=0
+  echo $ECHO_N "0123456789$ECHO_C" >conftest.in
+  # Check for GNU sed and select it if it is found.
+  if "$lt_ac_sed" --version 2>&1 < /dev/null | grep 'GNU' > /dev/null; then
+    lt_cv_path_SED=$lt_ac_sed
+    break
+  fi
+  while true; do
+    cat conftest.in conftest.in >conftest.tmp
+    mv conftest.tmp conftest.in
+    cp conftest.in conftest.nl
+    echo >>conftest.nl
+    $lt_ac_sed -e 's/a$//' < conftest.nl >conftest.out || break
+    cmp -s conftest.out conftest.nl || break
+    # 10000 chars as input seems more than enough
+    test $lt_ac_count -gt 10 && break
+    lt_ac_count=`expr $lt_ac_count + 1`
+    if test $lt_ac_count -gt $lt_ac_max; then
+      lt_ac_max=$lt_ac_count
+      lt_cv_path_SED=$lt_ac_sed
+    fi
+  done
+done
+])
+SED=$lt_cv_path_SED
+AC_SUBST([SED])
+AC_MSG_RESULT([$SED])
+])#AC_PROG_SED
+])#m4_ifndef
+
+# Old name:
+AU_ALIAS([LT_AC_PROG_SED], [AC_PROG_SED])
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([LT_AC_PROG_SED], [])
+
+
+# _LT_CHECK_SHELL_FEATURES
+# ------------------------
+# Find out whether the shell is Bourne or XSI compatible,
+# or has some other useful features.
+m4_defun([_LT_CHECK_SHELL_FEATURES],
+[AC_MSG_CHECKING([whether the shell understands some XSI constructs])
+# Try some XSI features
+xsi_shell=no
+( _lt_dummy="a/b/c"
+  test "${_lt_dummy##*/},${_lt_dummy%/*},${_lt_dummy#??}"${_lt_dummy%"$_lt_dummy"}, \
+      = c,a/b,b/c, \
+    && eval 'test $(( 1 + 1 )) -eq 2 \
+    && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
+  && xsi_shell=yes
+AC_MSG_RESULT([$xsi_shell])
+_LT_CONFIG_LIBTOOL_INIT([xsi_shell='$xsi_shell'])
+
+AC_MSG_CHECKING([whether the shell understands "+="])
+lt_shell_append=no
+( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
+    >/dev/null 2>&1 \
+  && lt_shell_append=yes
+AC_MSG_RESULT([$lt_shell_append])
+_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
+
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  lt_unset=unset
+else
+  lt_unset=false
+fi
+_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
+
+# test EBCDIC or ASCII
+case `echo X|tr X '\101'` in
+ A) # ASCII based system
+    # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
+  lt_SP2NL='tr \040 \012'
+  lt_NL2SP='tr \015\012 \040\040'
+  ;;
+ *) # EBCDIC based system
+  lt_SP2NL='tr \100 \n'
+  lt_NL2SP='tr \r\n \100\100'
+  ;;
+esac
+_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
+_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
+])# _LT_CHECK_SHELL_FEATURES
+
+
+# _LT_PROG_FUNCTION_REPLACE (FUNCNAME, REPLACEMENT-BODY)
+# ------------------------------------------------------
+# In `$cfgfile', look for function FUNCNAME delimited by `^FUNCNAME ()$' and
+# '^} FUNCNAME ', and replace its body with REPLACEMENT-BODY.
+m4_defun([_LT_PROG_FUNCTION_REPLACE],
+[dnl {
+sed -e '/^$1 ()$/,/^} # $1 /c\
+$1 ()\
+{\
+m4_bpatsubsts([$2], [$], [\\], [^\([	 ]\)], [\\\1])
+} # Extended-shell $1 implementation' "$cfgfile" > $cfgfile.tmp \
+  && mv -f "$cfgfile.tmp" "$cfgfile" \
+    || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+test 0 -eq $? || _lt_function_replace_fail=:
+])
+
+
+# _LT_PROG_REPLACE_SHELLFNS
+# -------------------------
+# Replace existing portable implementations of several shell functions with
+# equivalent extended shell implementations where those features are available..
+m4_defun([_LT_PROG_REPLACE_SHELLFNS],
+[if test x"$xsi_shell" = xyes; then
+  _LT_PROG_FUNCTION_REPLACE([func_dirname], [dnl
+    case ${1} in
+      */*) func_dirname_result="${1%/*}${2}" ;;
+      *  ) func_dirname_result="${3}" ;;
+    esac])
+
+  _LT_PROG_FUNCTION_REPLACE([func_basename], [dnl
+    func_basename_result="${1##*/}"])
+
+  _LT_PROG_FUNCTION_REPLACE([func_dirname_and_basename], [dnl
+    case ${1} in
+      */*) func_dirname_result="${1%/*}${2}" ;;
+      *  ) func_dirname_result="${3}" ;;
+    esac
+    func_basename_result="${1##*/}"])
+
+  _LT_PROG_FUNCTION_REPLACE([func_stripname], [dnl
+    # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
+    # positional parameters, so assign one to ordinary parameter first.
+    func_stripname_result=${3}
+    func_stripname_result=${func_stripname_result#"${1}"}
+    func_stripname_result=${func_stripname_result%"${2}"}])
+
+  _LT_PROG_FUNCTION_REPLACE([func_split_long_opt], [dnl
+    func_split_long_opt_name=${1%%=*}
+    func_split_long_opt_arg=${1#*=}])
+
+  _LT_PROG_FUNCTION_REPLACE([func_split_short_opt], [dnl
+    func_split_short_opt_arg=${1#??}
+    func_split_short_opt_name=${1%"$func_split_short_opt_arg"}])
+
+  _LT_PROG_FUNCTION_REPLACE([func_lo2o], [dnl
+    case ${1} in
+      *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
+      *)    func_lo2o_result=${1} ;;
+    esac])
+
+  _LT_PROG_FUNCTION_REPLACE([func_xform], [    func_xform_result=${1%.*}.lo])
+
+  _LT_PROG_FUNCTION_REPLACE([func_arith], [    func_arith_result=$(( $[*] ))])
+
+  _LT_PROG_FUNCTION_REPLACE([func_len], [    func_len_result=${#1}])
+fi
+
+if test x"$lt_shell_append" = xyes; then
+  _LT_PROG_FUNCTION_REPLACE([func_append], [    eval "${1}+=\\${2}"])
+
+  _LT_PROG_FUNCTION_REPLACE([func_append_quoted], [dnl
+    func_quote_for_eval "${2}"
+dnl m4 expansion turns \\\\ into \\, and then the shell eval turns that into \
+    eval "${1}+=\\\\ \\$func_quote_for_eval_result"])
+
+  # Save a `func_append' function call where possible by direct use of '+='
+  sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
+    && mv -f "$cfgfile.tmp" "$cfgfile" \
+      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+  test 0 -eq $? || _lt_function_replace_fail=:
+else
+  # Save a `func_append' function call even when '+=' is not available
+  sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
+    && mv -f "$cfgfile.tmp" "$cfgfile" \
+      || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
+  test 0 -eq $? || _lt_function_replace_fail=:
+fi
+
+if test x"$_lt_function_replace_fail" = x":"; then
+  AC_MSG_WARN([Unable to substitute extended shell functions in $ofile])
+fi
+])
+
+# _LT_PATH_CONVERSION_FUNCTIONS
+# -----------------------------
+# Determine which file name conversion functions should be used by
+# func_to_host_file (and, implicitly, by func_to_host_path).  These are needed
+# for certain cross-compile configurations and native mingw.
+m4_defun([_LT_PATH_CONVERSION_FUNCTIONS],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
+AC_MSG_CHECKING([how to convert $build file names to $host format])
+AC_CACHE_VAL(lt_cv_to_host_file_cmd,
+[case $host in
+  *-*-mingw* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
+        ;;
+      *-*-cygwin* )
+        lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
+        ;;
+      * ) # otherwise, assume *nix
+        lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
+        ;;
+    esac
+    ;;
+  *-*-cygwin* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
+        ;;
+      *-*-cygwin* )
+        lt_cv_to_host_file_cmd=func_convert_file_noop
+        ;;
+      * ) # otherwise, assume *nix
+        lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
+        ;;
+    esac
+    ;;
+  * ) # unhandled hosts (and "normal" native builds)
+    lt_cv_to_host_file_cmd=func_convert_file_noop
+    ;;
+esac
+])
+to_host_file_cmd=$lt_cv_to_host_file_cmd
+AC_MSG_RESULT([$lt_cv_to_host_file_cmd])
+_LT_DECL([to_host_file_cmd], [lt_cv_to_host_file_cmd],
+         [0], [convert $build file names to $host format])dnl
+
+AC_MSG_CHECKING([how to convert $build file names to toolchain format])
+AC_CACHE_VAL(lt_cv_to_tool_file_cmd,
+[#assume ordinary cross tools, or native build.
+lt_cv_to_tool_file_cmd=func_convert_file_noop
+case $host in
+  *-*-mingw* )
+    case $build in
+      *-*-mingw* ) # actually msys
+        lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
+        ;;
+    esac
+    ;;
+esac
+])
+to_tool_file_cmd=$lt_cv_to_tool_file_cmd
+AC_MSG_RESULT([$lt_cv_to_tool_file_cmd])
+_LT_DECL([to_tool_file_cmd], [lt_cv_to_tool_file_cmd],
+         [0], [convert $build files to toolchain format])dnl
+])# _LT_PATH_CONVERSION_FUNCTIONS
diff --git a/src/erasure-code/jerasure/jerasure/m4/ltoptions.m4 b/src/erasure-code/jerasure/jerasure/m4/ltoptions.m4
new file mode 100644
index 00000000..5d9acd8e
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ltoptions.m4
@@ -0,0 +1,384 @@
+# Helper functions for option handling.                    -*- Autoconf -*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation,
+#   Inc.
+#   Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 7 ltoptions.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
+
+
+# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
+# ------------------------------------------
+m4_define([_LT_MANGLE_OPTION],
+[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
+
+
+# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
+# ---------------------------------------
+# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
+# matching handler defined, dispatch to it.  Other OPTION-NAMEs are
+# saved as a flag.
+m4_define([_LT_SET_OPTION],
+[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
+m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
+        _LT_MANGLE_DEFUN([$1], [$2]),
+    [m4_warning([Unknown $1 option `$2'])])[]dnl
+])
+
+
+# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
+# ------------------------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+m4_define([_LT_IF_OPTION],
+[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
+
+
+# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
+# -------------------------------------------------------
+# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
+# are set.
+m4_define([_LT_UNLESS_OPTIONS],
+[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+	    [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
+		      [m4_define([$0_found])])])[]dnl
+m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
+])[]dnl
+])
+
+
+# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
+# ----------------------------------------
+# OPTION-LIST is a space-separated list of Libtool options associated
+# with MACRO-NAME.  If any OPTION has a matching handler declared with
+# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
+# the unknown option and exit.
+m4_defun([_LT_SET_OPTIONS],
+[# Set options
+m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
+    [_LT_SET_OPTION([$1], _LT_Option)])
+
+m4_if([$1],[LT_INIT],[
+  dnl
+  dnl Simply set some default values (i.e off) if boolean options were not
+  dnl specified:
+  _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
+  ])
+  _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
+  ])
+  dnl
+  dnl If no reference was made to various pairs of opposing options, then
+  dnl we run the default mode handler for the pair.  For example, if neither
+  dnl `shared' nor `disable-shared' was passed, we enable building of shared
+  dnl archives by default:
+  _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
+  _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
+  _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
+  		   [_LT_ENABLE_FAST_INSTALL])
+  ])
+])# _LT_SET_OPTIONS
+
+
+## --------------------------------- ##
+## Macros to handle LT_INIT options. ##
+## --------------------------------- ##
+
+# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
+# -----------------------------------------
+m4_define([_LT_MANGLE_DEFUN],
+[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
+
+
+# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
+# -----------------------------------------------
+m4_define([LT_OPTION_DEFINE],
+[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
+])# LT_OPTION_DEFINE
+
+
+# dlopen
+# ------
+LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
+])
+
+AU_DEFUN([AC_LIBTOOL_DLOPEN],
+[_LT_SET_OPTION([LT_INIT], [dlopen])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `dlopen' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
+
+
+# win32-dll
+# ---------
+# Declare package support for building win32 dll's.
+LT_OPTION_DEFINE([LT_INIT], [win32-dll],
+[enable_win32_dll=yes
+
+case $host in
+*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+  AC_CHECK_TOOL(AS, as, false)
+  AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+  AC_CHECK_TOOL(OBJDUMP, objdump, false)
+  ;;
+esac
+
+test -z "$AS" && AS=as
+_LT_DECL([], [AS],      [1], [Assembler program])dnl
+
+test -z "$DLLTOOL" && DLLTOOL=dlltool
+_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl
+
+test -z "$OBJDUMP" && OBJDUMP=objdump
+_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl
+])# win32-dll
+
+AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
+[AC_REQUIRE([AC_CANONICAL_HOST])dnl
+_LT_SET_OPTION([LT_INIT], [win32-dll])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `win32-dll' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
+
+
+# _LT_ENABLE_SHARED([DEFAULT])
+# ----------------------------
+# implement the --enable-shared flag, and supports the `shared' and
+# `disable-shared' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_SHARED],
+[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([shared],
+    [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
+	[build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_shared=yes ;;
+    no) enable_shared=no ;;
+    *)
+      enable_shared=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_shared=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
+
+    _LT_DECL([build_libtool_libs], [enable_shared], [0],
+	[Whether or not to build shared libraries])
+])# _LT_ENABLE_SHARED
+
+LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
+])
+
+AC_DEFUN([AC_DISABLE_SHARED],
+[_LT_SET_OPTION([LT_INIT], [disable-shared])
+])
+
+AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
+AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_SHARED], [])
+dnl AC_DEFUN([AM_DISABLE_SHARED], [])
+
+
+
+# _LT_ENABLE_STATIC([DEFAULT])
+# ----------------------------
+# implement the --enable-static flag, and support the `static' and
+# `disable-static' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_STATIC],
+[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([static],
+    [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
+	[build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_static=yes ;;
+    no) enable_static=no ;;
+    *)
+     enable_static=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_static=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
+
+    _LT_DECL([build_old_libs], [enable_static], [0],
+	[Whether or not to build static libraries])
+])# _LT_ENABLE_STATIC
+
+LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
+
+# Old names:
+AC_DEFUN([AC_ENABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
+])
+
+AC_DEFUN([AC_DISABLE_STATIC],
+[_LT_SET_OPTION([LT_INIT], [disable-static])
+])
+
+AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
+AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AM_ENABLE_STATIC], [])
+dnl AC_DEFUN([AM_DISABLE_STATIC], [])
+
+
+
+# _LT_ENABLE_FAST_INSTALL([DEFAULT])
+# ----------------------------------
+# implement the --enable-fast-install flag, and support the `fast-install'
+# and `disable-fast-install' LT_INIT options.
+# DEFAULT is either `yes' or `no'.  If omitted, it defaults to `yes'.
+m4_define([_LT_ENABLE_FAST_INSTALL],
+[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
+AC_ARG_ENABLE([fast-install],
+    [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
+    [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
+    [p=${PACKAGE-default}
+    case $enableval in
+    yes) enable_fast_install=yes ;;
+    no) enable_fast_install=no ;;
+    *)
+      enable_fast_install=no
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for pkg in $enableval; do
+	IFS="$lt_save_ifs"
+	if test "X$pkg" = "X$p"; then
+	  enable_fast_install=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
+
+_LT_DECL([fast_install], [enable_fast_install], [0],
+	 [Whether or not to optimize for fast installation])dnl
+])# _LT_ENABLE_FAST_INSTALL
+
+LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
+LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
+
+# Old names:
+AU_DEFUN([AC_ENABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `fast-install' option into LT_INIT's first parameter.])
+])
+
+AU_DEFUN([AC_DISABLE_FAST_INSTALL],
+[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you put
+the `disable-fast-install' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
+dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
+
+
+# _LT_WITH_PIC([MODE])
+# --------------------
+# implement the --with-pic flag, and support the `pic-only' and `no-pic'
+# LT_INIT options.
+# MODE is either `yes' or `no'.  If omitted, it defaults to `both'.
+m4_define([_LT_WITH_PIC],
+[AC_ARG_WITH([pic],
+    [AS_HELP_STRING([--with-pic@<:@=PKGS@:>@],
+	[try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
+    [lt_p=${PACKAGE-default}
+    case $withval in
+    yes|no) pic_mode=$withval ;;
+    *)
+      pic_mode=default
+      # Look at the argument we got.  We use all the common list separators.
+      lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
+      for lt_pkg in $withval; do
+	IFS="$lt_save_ifs"
+	if test "X$lt_pkg" = "X$lt_p"; then
+	  pic_mode=yes
+	fi
+      done
+      IFS="$lt_save_ifs"
+      ;;
+    esac],
+    [pic_mode=default])
+
+test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
+
+_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
+])# _LT_WITH_PIC
+
+LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
+LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
+
+# Old name:
+AU_DEFUN([AC_LIBTOOL_PICMODE],
+[_LT_SET_OPTION([LT_INIT], [pic-only])
+AC_DIAGNOSE([obsolete],
+[$0: Remove this warning and the call to _LT_SET_OPTION when you
+put the `pic-only' option into LT_INIT's first parameter.])
+])
+
+dnl aclocal-1.4 backwards compatibility:
+dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
+
+## ----------------- ##
+## LTDL_INIT Options ##
+## ----------------- ##
+
+m4_define([_LTDL_MODE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
+		 [m4_define([_LTDL_MODE], [nonrecursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [recursive],
+		 [m4_define([_LTDL_MODE], [recursive])])
+LT_OPTION_DEFINE([LTDL_INIT], [subproject],
+		 [m4_define([_LTDL_MODE], [subproject])])
+
+m4_define([_LTDL_TYPE], [])
+LT_OPTION_DEFINE([LTDL_INIT], [installable],
+		 [m4_define([_LTDL_TYPE], [installable])])
+LT_OPTION_DEFINE([LTDL_INIT], [convenience],
+		 [m4_define([_LTDL_TYPE], [convenience])])
diff --git a/src/erasure-code/jerasure/jerasure/m4/ltsugar.m4 b/src/erasure-code/jerasure/jerasure/m4/ltsugar.m4
new file mode 100644
index 00000000..9000a057
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ltsugar.m4
@@ -0,0 +1,123 @@
+# ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
+#
+# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+# Written by Gary V. Vaughan, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 6 ltsugar.m4
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
+
+
+# lt_join(SEP, ARG1, [ARG2...])
+# -----------------------------
+# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
+# associated separator.
+# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
+# versions in m4sugar had bugs.
+m4_define([lt_join],
+[m4_if([$#], [1], [],
+       [$#], [2], [[$2]],
+       [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
+m4_define([_lt_join],
+[m4_if([$#$2], [2], [],
+       [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
+
+
+# lt_car(LIST)
+# lt_cdr(LIST)
+# ------------
+# Manipulate m4 lists.
+# These macros are necessary as long as will still need to support
+# Autoconf-2.59 which quotes differently.
+m4_define([lt_car], [[$1]])
+m4_define([lt_cdr],
+[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+       [$#], 1, [],
+       [m4_dquote(m4_shift($@))])])
+m4_define([lt_unquote], $1)
+
+
+# lt_append(MACRO-NAME, STRING, [SEPARATOR])
+# ------------------------------------------
+# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
+# Note that neither SEPARATOR nor STRING are expanded; they are appended
+# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
+# No SEPARATOR is output if MACRO-NAME was previously undefined (different
+# than defined and empty).
+#
+# This macro is needed until we can rely on Autoconf 2.62, since earlier
+# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
+m4_define([lt_append],
+[m4_define([$1],
+	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
+
+
+
+# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
+# ----------------------------------------------------------
+# Produce a SEP delimited list of all paired combinations of elements of
+# PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
+# has the form PREFIXmINFIXSUFFIXn.
+# Needed until we can rely on m4_combine added in Autoconf 2.62.
+m4_define([lt_combine],
+[m4_if(m4_eval([$# > 3]), [1],
+       [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
+[[m4_foreach([_Lt_prefix], [$2],
+	     [m4_foreach([_Lt_suffix],
+		]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
+	[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
+
+
+# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
+# -----------------------------------------------------------------------
+# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
+# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
+m4_define([lt_if_append_uniq],
+[m4_ifdef([$1],
+	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
+		 [lt_append([$1], [$2], [$3])$4],
+		 [$5])],
+	  [lt_append([$1], [$2], [$3])$4])])
+
+
+# lt_dict_add(DICT, KEY, VALUE)
+# -----------------------------
+m4_define([lt_dict_add],
+[m4_define([$1($2)], [$3])])
+
+
+# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
+# --------------------------------------------
+m4_define([lt_dict_add_subkey],
+[m4_define([$1($2:$3)], [$4])])
+
+
+# lt_dict_fetch(DICT, KEY, [SUBKEY])
+# ----------------------------------
+m4_define([lt_dict_fetch],
+[m4_ifval([$3],
+	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
+    m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
+
+
+# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
+# -----------------------------------------------------------------
+m4_define([lt_if_dict_fetch],
+[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
+	[$5],
+    [$6])])
+
+
+# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
+# --------------------------------------------------------------
+m4_define([lt_dict_filter],
+[m4_if([$5], [], [],
+  [lt_join(m4_quote(m4_default([$4], [[, ]])),
+           lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
+		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
+])
diff --git a/src/erasure-code/jerasure/jerasure/m4/ltversion.m4 b/src/erasure-code/jerasure/jerasure/m4/ltversion.m4
new file mode 100644
index 00000000..07a8602d
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/ltversion.m4
@@ -0,0 +1,23 @@
+# ltversion.m4 -- version numbers			-*- Autoconf -*-
+#
+#   Copyright (C) 2004 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# @configure_input@
+
+# serial 3337 ltversion.m4
+# This file is part of GNU Libtool
+
+m4_define([LT_PACKAGE_VERSION], [2.4.2])
+m4_define([LT_PACKAGE_REVISION], [1.3337])
+
+AC_DEFUN([LTVERSION_VERSION],
+[macro_version='2.4.2'
+macro_revision='1.3337'
+_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
+_LT_DECL(, macro_revision, 0)
+])
diff --git a/src/erasure-code/jerasure/jerasure/m4/lt~obsolete.m4 b/src/erasure-code/jerasure/jerasure/m4/lt~obsolete.m4
new file mode 100644
index 00000000..c573da90
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/m4/lt~obsolete.m4
@@ -0,0 +1,98 @@
+# lt~obsolete.m4 -- aclocal satisfying obsolete definitions.    -*-Autoconf-*-
+#
+#   Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
+#   Written by Scott James Remnant, 2004.
+#
+# This file is free software; the Free Software Foundation gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+
+# serial 5 lt~obsolete.m4
+
+# These exist entirely to fool aclocal when bootstrapping libtool.
+#
+# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
+# which have later been changed to m4_define as they aren't part of the
+# exported API, or moved to Autoconf or Automake where they belong.
+#
+# The trouble is, aclocal is a bit thick.  It'll see the old AC_DEFUN
+# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
+# using a macro with the same name in our local m4/libtool.m4 it'll
+# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
+# and doesn't know about Autoconf macros at all.)
+#
+# So we provide this file, which has a silly filename so it's always
+# included after everything else.  This provides aclocal with the
+# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
+# because those macros already exist, or will be overwritten later.
+# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6. 
+#
+# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
+# Yes, that means every name once taken will need to remain here until
+# we give up compatibility with versions before 1.7, at which point
+# we need to keep only those names which we still refer to.
+
+# This is to help aclocal find these macros, as it can't see m4_define.
+AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
+
+m4_ifndef([AC_LIBTOOL_LINKER_OPTION],	[AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
+m4_ifndef([AC_PROG_EGREP],		[AC_DEFUN([AC_PROG_EGREP])])
+m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_AC_SHELL_INIT],		[AC_DEFUN([_LT_AC_SHELL_INIT])])
+m4_ifndef([_LT_AC_SYS_LIBPATH_AIX],	[AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
+m4_ifndef([_LT_PROG_LTMAIN],		[AC_DEFUN([_LT_PROG_LTMAIN])])
+m4_ifndef([_LT_AC_TAGVAR],		[AC_DEFUN([_LT_AC_TAGVAR])])
+m4_ifndef([AC_LTDL_ENABLE_INSTALL],	[AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
+m4_ifndef([AC_LTDL_PREOPEN],		[AC_DEFUN([AC_LTDL_PREOPEN])])
+m4_ifndef([_LT_AC_SYS_COMPILER],	[AC_DEFUN([_LT_AC_SYS_COMPILER])])
+m4_ifndef([_LT_AC_LOCK],		[AC_DEFUN([_LT_AC_LOCK])])
+m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE],	[AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
+m4_ifndef([_LT_AC_TRY_DLOPEN_SELF],	[AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
+m4_ifndef([AC_LIBTOOL_PROG_CC_C_O],	[AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
+m4_ifndef([AC_LIBTOOL_SYS_HARD_LINK_LOCKS], [AC_DEFUN([AC_LIBTOOL_SYS_HARD_LINK_LOCKS])])
+m4_ifndef([AC_LIBTOOL_OBJDIR],		[AC_DEFUN([AC_LIBTOOL_OBJDIR])])
+m4_ifndef([AC_LTDL_OBJDIR],		[AC_DEFUN([AC_LTDL_OBJDIR])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH], [AC_DEFUN([AC_LIBTOOL_PROG_LD_HARDCODE_LIBPATH])])
+m4_ifndef([AC_LIBTOOL_SYS_LIB_STRIP],	[AC_DEFUN([AC_LIBTOOL_SYS_LIB_STRIP])])
+m4_ifndef([AC_PATH_MAGIC],		[AC_DEFUN([AC_PATH_MAGIC])])
+m4_ifndef([AC_PROG_LD_GNU],		[AC_DEFUN([AC_PROG_LD_GNU])])
+m4_ifndef([AC_PROG_LD_RELOAD_FLAG],	[AC_DEFUN([AC_PROG_LD_RELOAD_FLAG])])
+m4_ifndef([AC_DEPLIBS_CHECK_METHOD],	[AC_DEFUN([AC_DEPLIBS_CHECK_METHOD])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_NO_RTTI], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_NO_RTTI])])
+m4_ifndef([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE], [AC_DEFUN([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])])
+m4_ifndef([AC_LIBTOOL_PROG_COMPILER_PIC], [AC_DEFUN([AC_LIBTOOL_PROG_COMPILER_PIC])])
+m4_ifndef([AC_LIBTOOL_PROG_LD_SHLIBS],	[AC_DEFUN([AC_LIBTOOL_PROG_LD_SHLIBS])])
+m4_ifndef([AC_LIBTOOL_POSTDEP_PREDEP],	[AC_DEFUN([AC_LIBTOOL_POSTDEP_PREDEP])])
+m4_ifndef([LT_AC_PROG_EGREP],		[AC_DEFUN([LT_AC_PROG_EGREP])])
+m4_ifndef([LT_AC_PROG_SED],		[AC_DEFUN([LT_AC_PROG_SED])])
+m4_ifndef([_LT_CC_BASENAME],		[AC_DEFUN([_LT_CC_BASENAME])])
+m4_ifndef([_LT_COMPILER_BOILERPLATE],	[AC_DEFUN([_LT_COMPILER_BOILERPLATE])])
+m4_ifndef([_LT_LINKER_BOILERPLATE],	[AC_DEFUN([_LT_LINKER_BOILERPLATE])])
+m4_ifndef([_AC_PROG_LIBTOOL],		[AC_DEFUN([_AC_PROG_LIBTOOL])])
+m4_ifndef([AC_LIBTOOL_SETUP],		[AC_DEFUN([AC_LIBTOOL_SETUP])])
+m4_ifndef([_LT_AC_CHECK_DLFCN],		[AC_DEFUN([_LT_AC_CHECK_DLFCN])])
+m4_ifndef([AC_LIBTOOL_SYS_DYNAMIC_LINKER],	[AC_DEFUN([AC_LIBTOOL_SYS_DYNAMIC_LINKER])])
+m4_ifndef([_LT_AC_TAGCONFIG],		[AC_DEFUN([_LT_AC_TAGCONFIG])])
+m4_ifndef([AC_DISABLE_FAST_INSTALL],	[AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
+m4_ifndef([_LT_AC_LANG_CXX],		[AC_DEFUN([_LT_AC_LANG_CXX])])
+m4_ifndef([_LT_AC_LANG_F77],		[AC_DEFUN([_LT_AC_LANG_F77])])
+m4_ifndef([_LT_AC_LANG_GCJ],		[AC_DEFUN([_LT_AC_LANG_GCJ])])
+m4_ifndef([AC_LIBTOOL_LANG_C_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_C_CONFIG])])
+m4_ifndef([_LT_AC_LANG_C_CONFIG],	[AC_DEFUN([_LT_AC_LANG_C_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_CXX_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG])])
+m4_ifndef([_LT_AC_LANG_CXX_CONFIG],	[AC_DEFUN([_LT_AC_LANG_CXX_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_F77_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG])])
+m4_ifndef([_LT_AC_LANG_F77_CONFIG],	[AC_DEFUN([_LT_AC_LANG_F77_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_GCJ_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_GCJ_CONFIG])])
+m4_ifndef([_LT_AC_LANG_GCJ_CONFIG],	[AC_DEFUN([_LT_AC_LANG_GCJ_CONFIG])])
+m4_ifndef([AC_LIBTOOL_LANG_RC_CONFIG],	[AC_DEFUN([AC_LIBTOOL_LANG_RC_CONFIG])])
+m4_ifndef([_LT_AC_LANG_RC_CONFIG],	[AC_DEFUN([_LT_AC_LANG_RC_CONFIG])])
+m4_ifndef([AC_LIBTOOL_CONFIG],		[AC_DEFUN([AC_LIBTOOL_CONFIG])])
+m4_ifndef([_LT_AC_FILE_LTDLL_C],	[AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
+m4_ifndef([_LT_REQUIRED_DARWIN_CHECKS],	[AC_DEFUN([_LT_REQUIRED_DARWIN_CHECKS])])
+m4_ifndef([_LT_AC_PROG_CXXCPP],		[AC_DEFUN([_LT_AC_PROG_CXXCPP])])
+m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS],	[AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
+m4_ifndef([_LT_PROG_ECHO_BACKSLASH],	[AC_DEFUN([_LT_PROG_ECHO_BACKSLASH])])
+m4_ifndef([_LT_PROG_F77],		[AC_DEFUN([_LT_PROG_F77])])
+m4_ifndef([_LT_PROG_FC],		[AC_DEFUN([_LT_PROG_FC])])
+m4_ifndef([_LT_PROG_CXX],		[AC_DEFUN([_LT_PROG_CXX])])
diff --git a/src/erasure-code/jerasure/jerasure/makefile.orig b/src/erasure-code/jerasure/jerasure/makefile.orig
new file mode 100644
index 00000000..f2ffeb0e
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/makefile.orig
@@ -0,0 +1,79 @@
+# Makefile
+# James S. Plank
+# 
+# JERASURE - Library for Erasure Coding
+# Copright (C) 2007 James S. Plank
+# 
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+# 
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+# 
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+# 
+# James S. Plank
+# Department of Electrical Engineering and Computer Science
+# University of Tennessee
+# Knoxville, TN 37996
+# plank@cs.utk.edu
+
+# $Revision: 1.0 $
+# $Date: 2007/09/25 15:12:20 $
+
+UNAME := $(shell uname)
+
+ifeq ($(UNAME), Linux)
+LIBARGS=-shared -Wl,-soname,libJerasure.so.0
+endif
+ifeq ($(UNAME), Darwin)
+LIBARGS=-shared -Wl,-install_name,libJerasure.so.0
+endif
+
+PREFIX=/usr/local
+BINDIR=${PREFIX}/bin
+LIBDIR=${PREFIX}/lib
+INCDIR=${PREFIX}/include
+
+CC = gcc  
+CFLAGS = -O3 -I${INCDIR} -L${LIBDIR} -fPIC
+
+ALL =	galois.o jerasure.o reed_sol.o cauchy.o liberation.o lib/libJerasure.so
+OBJS = galois.o jerasure.o reed_sol.o cauchy.o liberation.o
+
+all: $(ALL)
+
+clean:
+	rm -f core *.o $(ALL) a.out lib/libJerasure.so.0
+
+lib:
+	mkdir -p lib
+
+.SUFFIXES: .c .o
+.c.o:
+	$(CC) $(CFLAGS) -c $*.c
+
+galois.o: galois.h
+jerasure.o: jerasure.h galois.h
+reed_sol.o: jerasure.h galois.h reed_sol.h
+cauchy.o: jerasure.h galois.h cauchy.h
+liberation.o: jerasure.h galois.h liberation.h
+
+lib/libJerasure.so: lib/libJerasure.so.0
+	ln -sf libJerasure.so.0 lib/libJerasure.so
+
+lib/libJerasure.so.0: lib $(OBJS)
+	$(CC) $(LIBARGS) \
+	  -o lib/libJerasure.so.0 $(OBJS) -lgf_complete
+
+install: lib/libJerasure.so
+	cp -P lib/libJerasure.so* ${LIBDIR}
+	mkdir -p ${INCDIR}
+	cp *.h ${INCDIR}
+
diff --git a/src/erasure-code/jerasure/jerasure/missing b/src/erasure-code/jerasure/jerasure/missing
new file mode 100755
index 00000000..86a8fc31
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/missing
@@ -0,0 +1,331 @@
+#! /bin/sh
+# Common stub for a few missing GNU programs while installing.
+
+scriptversion=2012-01-06.13; # UTC
+
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+# Originally by Fran,cois Pinard , 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see .
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try \`$0 --help' for more information"
+  exit 1
+fi
+
+run=:
+sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
+sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
+
+# In the cases where this matters, `missing' is being run in the
+# srcdir already.
+if test -f configure.ac; then
+  configure_ac=configure.ac
+else
+  configure_ac=configure.in
+fi
+
+msg="missing on your system"
+
+case $1 in
+--run)
+  # Try to run requested program, and just exit if it succeeds.
+  run=
+  shift
+  "$@" && exit 0
+  # Exit code 63 means version mismatch.  This often happens
+  # when the user try to use an ancient version of a tool on
+  # a file that requires a minimum version.  In this case we
+  # we should proceed has if the program had been absent, or
+  # if --run hadn't been passed.
+  if test $? = 63; then
+    run=:
+    msg="probably too old"
+  fi
+  ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+error status if there is no known handling for PROGRAM.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+  --run           try to run the given command, and emulate it if it fails
+
+Supported PROGRAM values:
+  aclocal      touch file \`aclocal.m4'
+  autoconf     touch file \`configure'
+  autoheader   touch file \`config.h.in'
+  autom4te     touch the output file, or create a stub one
+  automake     touch all \`Makefile.in' files
+  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
+  flex         create \`lex.yy.c', if possible, from existing .c
+  help2man     touch the output file
+  lex          create \`lex.yy.c', if possible, from existing .c
+  makeinfo     touch the output file
+  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+
+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
+Send bug reports to ."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: Unknown \`$1' option"
+    echo 1>&2 "Try \`$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# normalize program name to check for.
+program=`echo "$1" | sed '
+  s/^gnu-//; t
+  s/^gnu//; t
+  s/^g//; t'`
+
+# Now exit if we have it, but it failed.  Also exit now if we
+# don't have it and --version was passed (most likely to detect
+# the program).  This is about non-GNU programs, so use $1 not
+# $program.
+case $1 in
+  lex*|yacc*)
+    # Not GNU programs, they don't have --version.
+    ;;
+
+  *)
+    if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
+       # We have it, but it failed.
+       exit 1
+    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
+       # Could not run --version or --help.  This is probably someone
+       # running `$TOOL --version' or `$TOOL --help' to check whether
+       # $TOOL exists and not knowing $TOOL uses missing.
+       exit 1
+    fi
+    ;;
+esac
+
+# If it does not exist, or fails to run (possibly an outdated version),
+# try to emulate it.
+case $program in
+  aclocal*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
+         to install the \`Automake' and \`Perl' packages.  Grab them from
+         any GNU archive site."
+    touch aclocal.m4
+    ;;
+
+  autoconf*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`${configure_ac}'.  You might want to install the
+         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+         archive site."
+    touch configure
+    ;;
+
+  autoheader*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
+         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+         from any GNU archive site."
+    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
+    test -z "$files" && files="config.h"
+    touch_files=
+    for f in $files; do
+      case $f in
+      *:*) touch_files="$touch_files "`echo "$f" |
+				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
+      *) touch_files="$touch_files $f.in";;
+      esac
+    done
+    touch $touch_files
+    ;;
+
+  automake*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
+         You might want to install the \`Automake' and \`Perl' packages.
+         Grab them from any GNU archive site."
+    find . -type f -name Makefile.am -print |
+	   sed 's/\.am$/.in/' |
+	   while read f; do touch "$f"; done
+    ;;
+
+  autom4te*)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, but is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.
+         You can get \`$1' as part of \`Autoconf' from any GNU
+         archive site."
+
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo "#! /bin/sh"
+	echo "# Created by GNU Automake missing as a replacement of"
+	echo "#  $ $@"
+	echo "exit 0"
+	chmod +x $file
+	exit 1
+    fi
+    ;;
+
+  bison*|yacc*)
+    echo 1>&2 "\
+WARNING: \`$1' $msg.  You should only need it if
+         you modified a \`.y' file.  You may need the \`Bison' package
+         in order for those modifications to take effect.  You can get
+         \`Bison' from any GNU archive site."
+    rm -f y.tab.c y.tab.h
+    if test $# -ne 1; then
+        eval LASTARG=\${$#}
+	case $LASTARG in
+	*.y)
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" y.tab.c
+	    fi
+	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" y.tab.h
+	    fi
+	  ;;
+	esac
+    fi
+    if test ! -f y.tab.h; then
+	echo >y.tab.h
+    fi
+    if test ! -f y.tab.c; then
+	echo 'main() { return 0; }' >y.tab.c
+    fi
+    ;;
+
+  lex*|flex*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.l' file.  You may need the \`Flex' package
+         in order for those modifications to take effect.  You can get
+         \`Flex' from any GNU archive site."
+    rm -f lex.yy.c
+    if test $# -ne 1; then
+        eval LASTARG=\${$#}
+	case $LASTARG in
+	*.l)
+	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
+	    if test -f "$SRCFILE"; then
+	         cp "$SRCFILE" lex.yy.c
+	    fi
+	  ;;
+	esac
+    fi
+    if test ! -f lex.yy.c; then
+	echo 'main() { return 0; }' >lex.yy.c
+    fi
+    ;;
+
+  help2man*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+	 you modified a dependency of a manual page.  You may need the
+	 \`Help2man' package in order for those modifications to take
+	 effect.  You can get \`Help2man' from any GNU archive site."
+
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -f "$file"; then
+	touch $file
+    else
+	test -z "$file" || exec >$file
+	echo ".ab help2man is required to generate this page"
+	exit $?
+    fi
+    ;;
+
+  makeinfo*)
+    echo 1>&2 "\
+WARNING: \`$1' is $msg.  You should only need it if
+         you modified a \`.texi' or \`.texinfo' file, or any other file
+         indirectly affecting the aspect of the manual.  The spurious
+         call might also be the consequence of using a buggy \`make' (AIX,
+         DU, IRIX).  You might want to install the \`Texinfo' package or
+         the \`GNU make' package.  Grab either from any GNU archive site."
+    # The file to touch is that specified with -o ...
+    file=`echo "$*" | sed -n "$sed_output"`
+    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
+    if test -z "$file"; then
+      # ... or it is the one specified with @setfilename ...
+      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
+      file=`sed -n '
+	/^@setfilename/{
+	  s/.* \([^ ]*\) *$/\1/
+	  p
+	  q
+	}' $infile`
+      # ... or it is derived from the source name (dir/f.texi becomes f.info)
+      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
+    fi
+    # If the file does not exist, the user really needs makeinfo;
+    # let's fail without touching anything.
+    test -f $file || exit 1
+    touch $file
+    ;;
+
+  *)
+    echo 1>&2 "\
+WARNING: \`$1' is needed, and is $msg.
+         You might have modified some files without having the
+         proper tools for further handling them.  Check the \`README' file,
+         it often tells you about the needed prerequisites for installing
+         this package.  You may also peek at any GNU archive site, in case
+         some other package would contain this missing \`$1' program."
+    exit 1
+    ;;
+esac
+
+exit 0
+
+# Local variables:
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/erasure-code/jerasure/jerasure/src/Makefile.am b/src/erasure-code/jerasure/jerasure/src/Makefile.am
new file mode 100644
index 00000000..5f7158f5
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/Makefile.am
@@ -0,0 +1,10 @@
+# Jerasure AM file
+
+INCLUDES=-I./
+AM_CFLAGS = -O3 $(SIMD_FLAGS) -fPIC $(INCLUDES)
+
+lib_LTLIBRARIES = libJerasure.la
+libJerasure_la_SOURCES = galois.c jerasure.c reed_sol.c cauchy.c liberation.c
+libJerasure_la_LDFLAGS = -version-info 2:0:0
+libJerasure_la_LIBADD = -lgf_complete
+include_HEADERS = ../include/jerasure.h
diff --git a/src/erasure-code/jerasure/jerasure/src/Makefile.in b/src/erasure-code/jerasure/jerasure/src/Makefile.in
new file mode 100644
index 00000000..0fdd98b2
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/Makefile.in
@@ -0,0 +1,543 @@
+# Makefile.in generated by automake 1.11.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software
+# Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Jerasure AM file
+
+
+VPATH = @srcdir@
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+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+subdir = src
+DIST_COMMON = $(include_HEADERS) $(srcdir)/Makefile.am \
+	$(srcdir)/Makefile.in
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/m4/ax_check_compile_flag.m4 \
+	$(top_srcdir)/m4/ax_ext.m4 \
+	$(top_srcdir)/m4/ax_gcc_x86_avx_xgetbv.m4 \
+	$(top_srcdir)/m4/ax_gcc_x86_cpuid.m4 \
+	$(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \
+	$(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \
+	$(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/include/config.h
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`;
+am__vpath_adj = case $$p in \
+    $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \
+    *) f=$$p;; \
+  esac;
+am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`;
+am__install_max = 40
+am__nobase_strip_setup = \
+  srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'`
+am__nobase_strip = \
+  for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||"
+am__nobase_list = $(am__nobase_strip_setup); \
+  for p in $$list; do echo "$$p $$p"; done | \
+  sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \
+  $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \
+    if (++n[$$2] == $(am__install_max)) \
+      { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \
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+am__base_list = \
+  sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
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+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
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+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(includedir)"
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+libJerasure_la_DEPENDENCIES =
+am_libJerasure_la_OBJECTS = galois.lo jerasure.lo reed_sol.lo \
+	cauchy.lo liberation.lo
+libJerasure_la_OBJECTS = $(am_libJerasure_la_OBJECTS)
+libJerasure_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libJerasure_la_LDFLAGS) $(LDFLAGS) -o $@
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+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
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+	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
+	$(LDFLAGS) -o $@
+SOURCES = $(libJerasure_la_SOURCES)
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+INCLUDES = -I./
+AM_CFLAGS = -O3 $(SIMD_FLAGS) -fPIC $(INCLUDES)
+lib_LTLIBRARIES = libJerasure.la
+libJerasure_la_SOURCES = galois.c jerasure.c reed_sol.c cauchy.c liberation.c
+libJerasure_la_LDFLAGS = -version-info 2:0:0
+libJerasure_la_LIBADD = -lgf_complete
+include_HEADERS = ../include/jerasure.h
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu --ignore-deps src/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu --ignore-deps src/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+	@$(NORMAL_INSTALL)
+	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	list2=; for p in $$list; do \
+	  if test -f $$p; then \
+	    list2="$$list2 $$p"; \
+	  else :; fi; \
+	done; \
+	test -z "$$list2" || { \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
+	}
+
+uninstall-libLTLIBRARIES:
+	@$(NORMAL_UNINSTALL)
+	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
+	for p in $$list; do \
+	  $(am__strip_dir) \
+	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f '$(DESTDIR)$(libdir)/$$f'"; \
+	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/$$f"; \
+	done
+
+clean-libLTLIBRARIES:
+	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
+	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libJerasure.la: $(libJerasure_la_OBJECTS) $(libJerasure_la_DEPENDENCIES) $(EXTRA_libJerasure_la_DEPENDENCIES) 
+	$(libJerasure_la_LINK) -rpath $(libdir) $(libJerasure_la_OBJECTS) $(libJerasure_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+.c.o:
+	$(COMPILE) -c $<
+
+.c.obj:
+	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+
+.c.lo:
+	$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+install-includeHEADERS: $(include_HEADERS)
+	@$(NORMAL_INSTALL)
+	test -z "$(includedir)" || $(MKDIR_P) "$(DESTDIR)$(includedir)"
+	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_HEADER) $$files '$(DESTDIR)$(includedir)'"; \
+	  $(INSTALL_HEADER) $$files "$(DESTDIR)$(includedir)" || exit $$?; \
+	done
+
+uninstall-includeHEADERS:
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+	@list='$(include_HEADERS)'; test -n "$(includedir)" || list=; \
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+	  done | \
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+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
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+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
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+	  done | \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
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+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+installdirs:
+	for dir in "$(DESTDIR)$(libdir)" "$(DESTDIR)$(includedir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libLTLIBRARIES clean-libtool \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-includeHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am: install-libLTLIBRARIES
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-includeHEADERS uninstall-libLTLIBRARIES
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libLTLIBRARIES clean-libtool ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-includeHEADERS install-info \
+	install-info-am install-libLTLIBRARIES install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags uninstall uninstall-am uninstall-includeHEADERS \
+	uninstall-libLTLIBRARIES
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/erasure-code/jerasure/jerasure/src/cauchy.c b/src/erasure-code/jerasure/jerasure/src/cauchy.c
new file mode 100644
index 00000000..f63dfb7e
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/cauchy.c
@@ -0,0 +1,405 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+
+#include "galois.h"
+#include "jerasure.h"
+#include "cauchy.h"
+
+static int PPs[33] = { -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1, -1 };
+static int NOs[33];
+static int ONEs[33][33];
+
+static int *cbest_0;
+static int *cbest_1;
+static int cbest_2[3];
+static int cbest_3[7];
+static int cbest_4[15];
+static int cbest_5[31];
+static int cbest_6[63];
+static int cbest_7[127];
+static int cbest_8[255];
+static int cbest_9[511];
+static int cbest_10[1023];
+static int cbest_11[1023];
+static int *cbest_12, *cbest_13, *cbest_14, *cbest_15, *cbest_16, *cbest_17, *cbest_18, *cbest_19, *cbest_20,
+           *cbest_21, *cbest_22, *cbest_23, *cbest_24, *cbest_25, *cbest_26, *cbest_27, *cbest_28, *cbest_29, *cbest_30,
+           *cbest_31, *cbest_32;
+
+static int cbest_max_k[33] = { -1, -1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 1023, -1,
+     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+     -1, -1, -1, -1 };
+
+static int cbest_init = 0;
+
+static int *cbest_all[33];
+
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+int cauchy_n_ones(int n, int w)
+{
+  int no;
+  int cno;
+  int nones;
+  int i, j;
+  int highbit;
+
+  highbit = (1 << (w-1));
+
+  if (PPs[w] == -1) {
+    nones = 0;
+    PPs[w] = galois_single_multiply(highbit, 2, w);
+    for (i = 0; i < w; i++) {
+      if (PPs[w] & (1 << i)) {
+        ONEs[w][nones] = (1 << i);
+        nones++;
+      }
+    }
+    NOs[w] = nones;
+  }
+
+  no = 0;
+  for (i = 0; i < w; i++) if (n & (1 << i)) no++;
+  cno = no;
+  for (i = 1; i < w; i++) {
+    if (n & highbit) {
+      n ^= highbit;
+      n <<= 1;
+      n ^= PPs[w];
+      cno--;
+      for (j = 0; j < NOs[w]; j++) {
+        cno += (n & ONEs[w][j]) ? 1 : -1;
+      }
+    } else {
+      n <<= 1;
+    } 
+    no += cno;
+  }
+  return no;
+}
+  
+int *cauchy_original_coding_matrix(int k, int m, int w)
+{
+  int *matrix;
+  int i, j, index;
+
+  if (w < 31 && (k+m) > (1 << w)) return NULL;
+  matrix = talloc(int, k*m);
+  if (matrix == NULL) return NULL;
+  index = 0;
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[index] = galois_single_divide(1, (i ^ (m+j)), w);
+      index++;
+    }
+  }
+  return matrix;
+}
+
+int *cauchy_xy_coding_matrix(int k, int m, int w, int *X, int *Y)
+{
+  int index, i, j;
+  int *matrix;
+
+  matrix = talloc(int, k*m);
+  if (matrix == NULL) { return NULL; }
+  index = 0;
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[index] = galois_single_divide(1, (X[i] ^ Y[j]), w);
+      index++;
+    }
+  }
+  return matrix;
+}
+
+void cauchy_improve_coding_matrix(int k, int m, int w, int *matrix)
+{
+  int index, i, j, x;
+  int tmp;
+  int bno, tno, bno_index;
+
+  for (j = 0; j < k; j++) {
+    if (matrix[j] != 1) {
+      tmp = galois_single_divide(1, matrix[j], w);
+      index = j;
+      for (i = 0; i < m; i++) {
+        matrix[index] = galois_single_multiply(matrix[index], tmp, w);
+        index += k;
+      }
+    }
+  }
+  for (i = 1; i < m; i++) {
+    bno = 0;
+    index = i*k;
+    for (j = 0; j < k; j++) bno += cauchy_n_ones(matrix[index+j], w);
+    bno_index = -1;
+    for (j = 0; j < k; j++) {
+      if (matrix[index+j] != 1) {
+        tmp = galois_single_divide(1, matrix[index+j], w);
+        tno = 0;
+        for (x = 0; x < k; x++) {
+          tno += cauchy_n_ones(galois_single_multiply(matrix[index+x], tmp, w), w);
+        }
+        if (tno < bno) {
+          bno = tno;
+          bno_index = j;
+        }
+      }
+    }
+    if (bno_index != -1) {
+      tmp = galois_single_divide(1, matrix[index+bno_index], w);
+      for (j = 0; j < k; j++) {
+        matrix[index+j] = galois_single_multiply(matrix[index+j], tmp, w);
+      }
+    }
+  }
+}
+
+int *cauchy_good_general_coding_matrix(int k, int m, int w)
+{
+  int *matrix, i;
+
+  if (m == 2 && k <= cbest_max_k[w]) {
+    matrix = talloc(int, k*m);
+    if (matrix == NULL) return NULL;
+    if (!cbest_init) {
+      cbest_init = 1;
+      cbest_all[0] = cbest_0; cbest_all[1] = cbest_1; cbest_all[2] = cbest_2; cbest_all[3] = cbest_3; cbest_all[4] =
+      cbest_4; cbest_all[5] = cbest_5; cbest_all[6] = cbest_6; cbest_all[7] = cbest_7; cbest_all[8] = cbest_8;
+      cbest_all[9] = cbest_9; cbest_all[10] = cbest_10; cbest_all[11] = cbest_11; cbest_all[12] = cbest_12;
+      cbest_all[13] = cbest_13; cbest_all[14] = cbest_14; cbest_all[15] = cbest_15; cbest_all[16] = cbest_16;
+      cbest_all[17] = cbest_17; cbest_all[18] = cbest_18; cbest_all[19] = cbest_19; cbest_all[20] = cbest_20;
+      cbest_all[21] = cbest_21; cbest_all[22] = cbest_22; cbest_all[23] = cbest_23; cbest_all[24] = cbest_24;
+      cbest_all[25] = cbest_25; cbest_all[26] = cbest_26; cbest_all[27] = cbest_27; cbest_all[28] = cbest_28;
+      cbest_all[29] = cbest_29; cbest_all[30] = cbest_30; cbest_all[31] = cbest_31; cbest_all[32] = (int *) cbest_32;
+    }
+    for (i = 0; i < k; i++) {
+      matrix[i] = 1;
+      matrix[i+k] = cbest_all[w][i];
+    }
+    return matrix;
+  } else {
+    matrix = cauchy_original_coding_matrix(k, m, w);
+    if (matrix == NULL) return NULL;
+    cauchy_improve_coding_matrix(k, m, w, matrix);
+    return matrix;
+  }
+}
+
+static int cbest_2[3] = { 1, 2, 3 };
+static int cbest_3[7] = { 1, 2, 5, 4, 7, 3, 6 };
+
+static int cbest_4[15] = { 1, 2, 9, 4, 8, 13, 3, 6, 12, 5, 11, 15, 10, 14, 7 };
+
+static int cbest_5[31] = { 1, 2, 18, 4, 9, 8, 22, 16, 3, 11, 19, 5, 10, 6, 20, 27, 13, 23, 26, 12,
+    17, 25, 24, 31, 30, 7, 15, 21, 29, 14, 28 };
+
+static int cbest_6[63] = { 1, 2, 33, 4, 8, 49, 16, 32, 57, 3, 6, 12, 24, 48, 5, 35, 9, 37, 10, 17,
+    41, 51, 56, 61, 18, 28, 53, 14, 20, 34, 7, 13, 25, 36, 59, 26, 39, 40, 45, 50, 60, 52, 63,
+    11, 30, 55, 19, 22, 29, 43, 58, 15, 21, 38, 44, 47, 62, 27, 54, 42, 31, 23, 46 };
+
+static int cbest_7[127] = { 1, 2, 68, 4, 34, 8, 17, 16, 76, 32, 38, 3, 64, 69, 5, 19, 35, 70, 6, 9,
+    18, 102, 10, 36, 85, 12, 21, 42, 51, 72, 77, 84, 20, 25, 33, 50, 78, 98, 24, 39, 49, 100, 110
+   , 48, 65, 93, 40, 66, 71, 92, 7, 46, 55, 87, 96, 103, 106, 11, 23, 37, 54, 81, 86, 108, 13,
+    22, 27, 43, 53, 73, 80, 14, 26, 52, 74, 79, 99, 119, 44, 95, 101, 104, 111, 118, 29, 59, 89,
+    94, 117, 28, 41, 58, 67, 88, 115, 116, 47, 57, 83, 97, 107, 114, 127, 56, 82, 109, 113, 126,
+    112, 125, 15, 63, 75, 123, 124, 31, 45, 62, 91, 105, 122, 30, 61, 90, 121, 60, 120 };
+
+static int cbest_8[255] = { 1, 2, 142, 4, 71, 8, 70, 173, 3, 35, 143, 16, 17, 67, 134, 140, 172, 6, 34
+   , 69, 201, 216, 5, 33, 86, 12, 65, 138, 158, 159, 175, 10, 32, 43, 66, 108, 130, 193, 234, 9,
+    24, 25, 50, 68, 79, 100, 132, 174, 200, 217, 20, 21, 42, 48, 87, 169, 41, 54, 64, 84, 96, 117
+   , 154, 155, 165, 226, 77, 82, 135, 136, 141, 168, 192, 218, 238, 7, 18, 19, 39, 40, 78, 113,
+    116, 128, 164, 180, 195, 205, 220, 232, 14, 26, 27, 58, 109, 156, 157, 203, 235, 13, 28, 29, 38
+   , 51, 56, 75, 85, 90, 101, 110, 112, 139, 171, 11, 37, 49, 52, 76, 83, 102, 119, 131, 150, 151
+   , 167, 182, 184, 188, 197, 219, 224, 45, 55, 80, 94, 97, 133, 170, 194, 204, 221, 227, 236, 36,
+    47, 73, 92, 98, 104, 118, 152, 153, 166, 202, 207, 239, 251, 22, 23, 44, 74, 91, 148, 149, 161
+   , 181, 190, 233, 46, 59, 88, 137, 146, 147, 163, 196, 208, 212, 222, 250, 57, 81, 95, 106, 111,
+    129, 160, 176, 199, 243, 249, 15, 53, 72, 93, 103, 115, 125, 162, 183, 185, 189, 206, 225, 255,
+    186, 210, 230, 237, 242, 248, 30, 31, 62, 89, 99, 105, 114, 121, 124, 178, 209, 213, 223, 228,
+    241, 254, 60, 191, 198, 247, 120, 240, 107, 127, 144, 145, 177, 211, 214, 246, 245, 123, 126,
+    187, 231, 253, 63, 179, 229, 244, 61, 122, 215, 252 };
+
+static int cbest_9[511] = { 1, 2, 264, 4, 132, 8, 66, 16, 33, 32, 280, 64, 140, 128, 3, 70, 265, 5,
+    133, 256, 266, 6, 9, 35, 67, 134, 268, 396, 10, 17, 34, 330, 12, 18, 68, 198, 297, 20, 37, 74
+   , 136, 148, 165, 281, 296, 24, 36, 41, 65, 82, 99, 164, 272, 282, 388, 40, 49, 98, 141, 194,
+    284, 328, 412, 48, 97, 129, 142, 196, 346, 71, 72, 96, 130, 313, 392, 80, 206, 257, 267, 312,
+    334, 7, 135, 156, 173, 192, 258, 269, 397, 404, 11, 78, 144, 161, 172, 260, 270, 299, 331, 344,
+    398, 13, 19, 39, 69, 86, 103, 160, 167, 199, 202, 298, 322, 384, 14, 21, 38, 43, 75, 102, 137,
+    149, 166, 204, 289, 332, 408, 462, 22, 25, 42, 51, 83, 101, 138, 150, 273, 283, 288, 301, 350,
+    389, 429, 26, 50, 76, 100, 195, 274, 285, 300, 329, 363, 390, 413, 428, 28, 45, 84, 143, 197,
+    200, 214, 231, 276, 286, 315, 320, 347, 362, 414, 458, 44, 53, 73, 90, 107, 131, 152, 169, 181,
+    230, 314, 338, 361, 393, 400, 454, 460, 52, 57, 81, 106, 115, 168, 175, 180, 207, 229, 305, 335
+   , 348, 360, 394, 421, 478, 56, 105, 114, 157, 163, 174, 193, 210, 227, 228, 259, 304, 317, 326,
+    405, 420, 445, 79, 104, 113, 145, 158, 162, 212, 226, 261, 271, 316, 345, 379, 399, 406, 444,
+    450, 456, 87, 88, 112, 146, 203, 225, 262, 291, 323, 336, 378, 385, 425, 452, 474, 15, 205, 222
+   , 224, 239, 290, 303, 333, 367, 377, 386, 409, 424, 431, 463, 470, 476, 23, 139, 151, 189, 208,
+    238, 302, 324, 351, 366, 376, 410, 430, 437, 27, 47, 77, 94, 111, 177, 188, 237, 275, 293, 342,
+    365, 391, 436, 448, 29, 46, 55, 85, 110, 119, 171, 176, 183, 201, 215, 218, 235, 236, 277, 287,
+    292, 321, 355, 364, 415, 417, 459, 466, 472, 30, 54, 59, 91, 109, 118, 153, 170, 182, 220, 234,
+    278, 307, 339, 354, 401, 416, 423, 441, 455, 461, 468, 495, 58, 108, 117, 154, 233, 306, 319,
+    349, 353, 383, 395, 402, 422, 440, 447, 479, 494, 92, 116, 211, 232, 318, 327, 340, 352, 382,
+    446, 493, 61, 159, 213, 216, 247, 309, 381, 407, 427, 451, 457, 464, 491, 492, 60, 89, 123, 147
+   , 185, 246, 263, 308, 337, 371, 380, 426, 433, 453, 475, 487, 490, 122, 184, 191, 223, 245, 370,
+    387, 432, 439, 471, 477, 486, 489, 511, 121, 179, 190, 209, 243, 244, 295, 325, 359, 369, 411,
+    438, 485, 488, 510, 95, 120, 178, 242, 294, 343, 358, 368, 419, 449, 483, 484, 509, 219, 241,
+    357, 418, 443, 467, 473, 482, 507, 508, 31, 221, 240, 255, 279, 356, 442, 469, 481, 503, 506,
+    155, 254, 403, 480, 502, 505, 63, 93, 127, 253, 311, 341, 375, 501, 504, 62, 126, 187, 217, 251
+   , 252, 310, 374, 435, 465, 499, 500, 125, 186, 250, 373, 434, 498, 124, 249, 372, 497, 248, 496
+    };
+
+static int cbest_10[1023] = { 1, 2, 516, 4, 258, 8, 129, 16, 32, 580, 64, 128, 290, 145, 256, 3, 512,
+    517, 5, 259, 518, 588, 6, 9, 18, 36, 72, 144, 774, 10, 17, 131, 262, 288, 524, 645, 12, 33,
+    133, 266, 294, 387, 532, 576, 581, 20, 34, 65, 137, 274, 548, 582, 24, 66, 291, 838, 40, 68,
+    130, 147, 161, 322, 644, 709, 806, 48, 132, 193, 257, 386, 596, 80, 136, 298, 419, 612, 661, 772
+   , 96, 149, 260, 272, 306, 403, 513, 146, 153, 160, 264, 292, 385, 514, 519, 544, 584, 589, 708,
+    870, 7, 19, 37, 73, 192, 354, 590, 770, 775, 11, 38, 74, 177, 263, 289, 418, 520, 525, 534, 641
+   , 660, 725, 802, 836, 846, 13, 22, 76, 148, 209, 267, 295, 320, 330, 402, 526, 528, 533, 577,
+    647, 717, 804, 14, 21, 26, 35, 44, 135, 152, 165, 201, 275, 304, 384, 401, 435, 549, 578, 583,
+    604, 608, 782, 903, 25, 52, 67, 88, 139, 270, 296, 391, 417, 550, 620, 653, 790, 834, 839, 41,
+    50, 69, 104, 141, 176, 278, 302, 323, 395, 423, 540, 598, 640, 705, 724, 807, 866, 28, 42, 49,
+    70, 82, 100, 163, 208, 282, 310, 556, 592, 597, 646, 663, 677, 711, 716, 868, 878, 81, 134, 151
+   , 164, 195, 200, 299, 326, 352, 362, 400, 434, 564, 613, 657, 768, 773, 902, 967, 97, 138, 155,
+    169, 197, 261, 273, 307, 358, 390, 416, 433, 451, 614, 652, 733, 800, 814, 844, 854, 935, 56, 84
+   , 98, 140, 181, 217, 265, 293, 328, 338, 394, 422, 515, 545, 585, 704, 788, 822, 871, 919, 162,
+    179, 276, 355, 407, 427, 546, 586, 591, 616, 662, 669, 676, 710, 727, 741, 771, 780, 901, 39, 75
+   , 150, 157, 194, 211, 225, 268, 280, 308, 314, 389, 411, 439, 521, 530, 535, 628, 656, 721, 803,
+    832, 837, 842, 847, 966, 23, 77, 112, 154, 168, 196, 300, 321, 331, 393, 421, 432, 450, 522, 527
+   , 529, 552, 606, 643, 673, 693, 713, 732, 805, 864, 874, 934, 999, 15, 27, 45, 54, 78, 90, 108,
+    180, 216, 305, 483, 560, 579, 600, 605, 609, 719, 778, 783, 852, 876, 886, 899, 918, 983, 46, 53
+   , 89, 167, 178, 185, 203, 213, 271, 297, 324, 334, 336, 360, 370, 406, 426, 467, 542, 551, 610,
+    621, 649, 668, 726, 740, 786, 791, 810, 820, 835, 900, 917, 931, 951, 965, 975, 30, 51, 105, 156
+   , 205, 210, 224, 279, 303, 356, 366, 388, 405, 410, 438, 449, 459, 536, 541, 594, 599, 622, 655,
+    720, 812, 818, 862, 867, 933, 29, 43, 71, 83, 92, 101, 106, 143, 173, 283, 311, 312, 346, 392,
+    409, 420, 437, 443, 557, 566, 593, 642, 659, 672, 692, 707, 712, 737, 757, 869, 879, 911, 998,
+    60, 102, 241, 327, 353, 363, 399, 425, 482, 558, 565, 624, 679, 718, 735, 749, 769, 798, 898,
+    963, 982, 58, 86, 166, 183, 184, 202, 212, 219, 233, 286, 359, 431, 466, 615, 636, 648, 689, 729
+   , 801, 815, 840, 845, 850, 855, 884, 916, 930, 950, 964, 974, 981, 995, 1015, 57, 85, 99, 120,
+    171, 199, 204, 229, 318, 329, 339, 368, 404, 448, 458, 465, 499, 654, 671, 685, 784, 789, 823,
+    872, 882, 915, 932, 949, 997, 1007, 116, 142, 159, 172, 277, 408, 436, 442, 455, 481, 491, 547,
+    572, 587, 617, 630, 658, 665, 706, 723, 736, 756, 776, 781, 816, 860, 894, 897, 910, 947, 991,
+    114, 221, 240, 269, 281, 309, 315, 332, 342, 344, 378, 398, 424, 441, 475, 487, 531, 618, 629,
+    678, 695, 734, 743, 748, 808, 833, 843, 929, 943, 962, 973, 113, 182, 189, 218, 227, 232, 301,
+    364, 374, 430, 457, 523, 553, 562, 602, 607, 688, 728, 753, 796, 830, 865, 875, 927, 980, 994,
+    1014, 55, 79, 91, 109, 170, 187, 198, 215, 228, 284, 415, 464, 498, 554, 561, 601, 670, 675, 684
+   , 715, 745, 765, 779, 848, 853, 877, 887, 909, 914, 948, 979, 996, 1006, 1013, 47, 110, 158, 249
+   , 316, 325, 335, 337, 361, 371, 397, 447, 454, 480, 490, 497, 538, 543, 611, 632, 664, 722, 787,
+    811, 821, 880, 896, 913, 946, 961, 971, 990, 1011, 31, 94, 220, 245, 357, 367, 429, 440, 474,
+    486, 537, 595, 623, 651, 681, 694, 701, 742, 759, 813, 819, 858, 863, 892, 928, 942, 945, 972,
+    989, 993, 1003, 1023, 62, 93, 107, 188, 207, 226, 237, 243, 313, 340, 347, 376, 456, 471, 473,
+    507, 567, 568, 626, 752, 890, 907, 926, 1005, 61, 103, 124, 175, 186, 214, 372, 414, 453, 463,
+    489, 503, 559, 625, 638, 674, 691, 714, 731, 739, 744, 764, 794, 799, 828, 908, 925, 939, 959,
+    978, 1012, 59, 87, 122, 248, 287, 350, 396, 413, 446, 485, 495, 496, 637, 751, 826, 841, 851,
+    885, 912, 941, 960, 970, 977, 1010, 118, 121, 235, 244, 319, 369, 382, 428, 445, 574, 650, 667,
+    680, 700, 758, 761, 785, 873, 883, 944, 988, 992, 1002, 1009, 1022, 117, 206, 223, 231, 236, 242
+   , 470, 472, 506, 573, 631, 687, 777, 817, 856, 861, 895, 906, 987, 1004, 1021, 115, 174, 191, 333
+   , 343, 345, 379, 452, 462, 469, 488, 502, 505, 619, 690, 697, 730, 738, 755, 809, 888, 924, 938,
+    958, 969, 1019, 253, 365, 375, 412, 484, 494, 501, 563, 603, 750, 767, 792, 797, 831, 923, 940,
+    957, 976, 1001, 234, 251, 285, 348, 444, 479, 555, 634, 666, 760, 824, 849, 905, 955, 1008, 111,
+    222, 230, 247, 317, 380, 461, 511, 539, 633, 686, 703, 747, 881, 937, 986, 1020, 95, 190, 468,
+    493, 504, 570, 696, 754, 859, 893, 968, 985, 1018, 63, 126, 252, 341, 377, 500, 569, 627, 683,
+    766, 891, 922, 956, 1000, 1017, 125, 239, 250, 373, 478, 639, 795, 829, 904, 921, 954, 123, 246,
+    351, 460, 477, 510, 702, 746, 763, 827, 936, 953, 119, 383, 492, 509, 575, 984, 682, 699, 857,
+    1016, 238, 255, 889, 920, 476, 762, 793, 952, 349, 508, 635, 825, 381, 698, 254, 571, 127 };
+
+static int cbest_11[1023] = { 1,
+    2, 1026, 4, 513, 8, 16, 1282, 32, 64, 641, 128, 256, 512, 1346, 1024, 3, 673, 1027, 5, 10, 20, 40, 80, 160, 320,
+    640, 6, 9, 515, 1030, 1280, 1539, 17, 517, 1034, 1283, 12, 18, 33, 521, 1042, 1362, 34, 65, 529, 1058, 1286, 1795,
+    24, 36, 66, 129, 545, 643, 1090, 1290, 1667, 68, 130, 257, 577, 645, 672, 1154, 1298, 1344, 48, 72, 132, 258, 336,
+    649, 681, 1314, 1347, 136, 168, 260, 514, 657, 769, 1538, 1923, 84, 96, 144, 264, 516, 1025, 1350, 1410, 1859, 42,
+    272, 520, 705, 1032, 1354, 11, 21, 41, 81, 161, 192, 288, 321, 528, 675, 1028, 1537, 1699, 1794, 7, 22, 82, 162,
+    322, 544, 642, 677, 897, 1031, 1046, 1066, 1106, 1186, 1281, 1366, 1378, 1666, 14, 44, 164, 324, 384, 523, 533,
+    553, 576, 593, 644, 833, 1035, 1040, 1288, 1360, 1987, 13, 19, 28, 88, 328, 519, 648, 680, 689, 1043, 1056, 1284,
+    1363, 1474, 1543, 1793, 1955, 26, 35, 56, 176, 656, 768, 1038, 1059, 1088, 1287, 1302, 1322, 1442, 1547, 1665,
+    1922, 25, 37, 52, 67, 112, 340, 352, 525, 531, 737, 1091, 1152, 1291, 1296, 1555, 1858, 1875, 38, 69, 74, 104, 131,
+    224, 547, 651, 661, 683, 704, 721, 961, 1050, 1062, 1155, 1299, 1312, 1345, 1370, 1571, 1799, 49, 70, 73, 133, 138,
+    148, 170, 208, 259, 337, 448, 537, 549, 579, 647, 674, 929, 1094, 1294, 1315, 1352, 1536, 1603, 1671, 1698, 1803,
+    1921, 50, 134, 137, 169, 261, 266, 276, 296, 338, 416, 581, 676, 896, 1074, 1098, 1158, 1348, 1394, 1408, 1675,
+    1707, 1811, 1857, 2019, 76, 85, 97, 145, 262, 265, 522, 532, 552, 561, 585, 592, 653, 659, 685, 771, 832, 849,
+    1064, 1162, 1194, 1306, 1318, 1351, 1386, 1411, 1506, 1683, 1827, 1986, 2003, 43, 86, 98, 140, 146, 172, 273, 344,
+    518, 688, 773, 1033, 1110, 1122, 1170, 1355, 1490, 1542, 1697, 1792, 1927, 1954, 100, 193, 268, 274, 289, 597, 609,
+    665, 697, 707, 777, 1029, 1044, 1104, 1184, 1330, 1364, 1376, 1414, 1546, 1664, 1731, 1863, 1931, 1963, 23, 46, 83,
+    92, 152, 163, 184, 194, 290, 323, 368, 524, 530, 555, 693, 709, 736, 753, 785, 993, 1036, 1047, 1067, 1107, 1187,
+    1218, 1320, 1358, 1367, 1379, 1418, 1450, 1545, 1554, 1867, 1874, 1939, 1985, 15, 30, 45, 60, 90, 120, 165, 180,
+    196, 240, 280, 292, 325, 330, 360, 385, 480, 546, 650, 660, 679, 682, 713, 720, 745, 801, 899, 960, 977, 1041,
+    1289, 1361, 1426, 1472, 1541, 1570, 1703, 1798, 1953, 29, 58, 89, 116, 166, 200, 232, 326, 329, 386, 464, 535, 536,
+    548, 578, 595, 646, 835, 901, 928, 1048, 1057, 1070, 1190, 1285, 1300, 1368, 1382, 1440, 1475, 1559, 1579, 1602,
+    1619, 1670, 1802, 1879, 1891, 1920, 27, 57, 177, 304, 388, 527, 557, 580, 691, 725, 837, 905, 937, 1039, 1054,
+    1089, 1114, 1292, 1303, 1323, 1374, 1443, 1553, 1674, 1706, 1715, 1801, 1810, 1856, 1873, 1991, 2018, 2035, 53,
+    106, 113, 178, 212, 332, 341, 353, 392, 424, 541, 560, 584, 601, 652, 658, 684, 770, 841, 848, 913, 1060, 1082,
+    1096, 1153, 1202, 1297, 1402, 1478, 1522, 1569, 1673, 1682, 1705, 1797, 1826, 1959, 1995, 2002, 2027, 39, 54, 75,
+    105, 114, 225, 342, 354, 400, 539, 569, 739, 772, 1051, 1063, 1078, 1092, 1138, 1160, 1192, 1304, 1313, 1326, 1371,
+    1384, 1398, 1446, 1482, 1514, 1551, 1601, 1669, 1696, 1763, 1815, 1835, 1926, 71, 139, 149, 171, 209, 226, 298,
+    356, 449, 565, 596, 608, 625, 663, 664, 696, 706, 723, 741, 776, 853, 865, 963, 1072, 1095, 1130, 1156, 1250, 1295,
+    1310, 1353, 1392, 1687, 1730, 1747, 1809, 1862, 1930, 1962, 1971, 2007, 2017, 51, 78, 108, 135, 150, 210, 228, 267,
+    277, 297, 339, 348, 417, 450, 551, 554, 587, 617, 655, 687, 692, 708, 752, 784, 931, 965, 992, 1009, 1075, 1099,
+    1159, 1174, 1234, 1316, 1338, 1349, 1395, 1409, 1458, 1494, 1504, 1544, 1563, 1575, 1681, 1825, 1866, 1883, 1929,
+    1938, 1961, 1984, 2001, 77, 142, 174, 263, 278, 346, 376, 418, 452, 496, 583, 669, 678, 701, 712, 729, 744, 761,
+    800, 898, 933, 969, 976, 1001, 1065, 1108, 1120, 1163, 1168, 1195, 1307, 1319, 1334, 1356, 1387, 1416, 1448, 1488,
+    1507, 1540, 1607, 1702, 1807, 1865, 1925, 1952, 87, 99, 141, 147, 156, 173, 188, 216, 248, 270, 300, 345, 372, 420,
+    456, 488, 534, 563, 594, 667, 699, 757, 779, 789, 809, 834, 851, 900, 1102, 1111, 1123, 1171, 1328, 1412, 1491,
+    1558, 1578, 1587, 1611, 1618, 1679, 1711, 1729, 1861, 1878, 1890, 1907, 1943, 2023, 94, 101, 124, 154, 186, 244,
+    269, 275, 284, 526, 556, 589, 690, 724, 775, 836, 904, 936, 945, 981, 1045, 1068, 1105, 1166, 1185, 1198, 1216,
+    1331, 1365, 1377, 1390, 1415, 1430, 1510, 1552, 1577, 1714, 1800, 1819, 1831, 1872, 1899, 1937, 1990, 2034, 47, 62,
+    93, 102, 122, 153, 185, 195, 282, 291, 312, 362, 369, 432, 468, 540, 599, 600, 611, 715, 747, 840, 857, 912, 1037,
+    1052, 1112, 1126, 1219, 1321, 1359, 1372, 1419, 1424, 1451, 1568, 1623, 1635, 1672, 1691, 1701, 1704, 1723, 1796,
+    1958, 1994, 2011, 2026, 2043, 31, 61, 91, 121, 181, 197, 202, 234, 241, 281, 293, 308, 331, 361, 370, 481, 538,
+    568, 613, 695, 711, 738, 755, 781, 787, 995, 1080, 1118, 1178, 1188, 1210, 1380, 1400, 1427, 1473, 1498, 1530,
+    1550, 1557, 1600, 1617, 1668, 1719, 1735, 1762, 1779, 1814, 1834, 1843, 1877, 1889, 1935, 1967, 1993, 2025, 2039,
+    59, 117, 167, 182, 198, 201, 233, 242, 294, 327, 387, 465, 482, 559, 564, 605, 624, 662, 722, 740, 803, 852, 864,
+    881, 907, 917, 939, 962, 979, 997, 1049, 1071, 1086, 1146, 1191, 1206, 1222, 1266, 1301, 1324, 1369, 1383, 1406,
+    1422, 1441, 1454, 1480, 1512, 1526, 1549, 1686, 1713, 1739, 1746, 1771, 1808, 1833, 1871, 1970, 1989, 2006, 2016,
+    2033, 118, 305, 334, 364, 389, 394, 404, 426, 466, 484, 543, 550, 573, 586, 603, 616, 633, 654, 686, 717, 749, 793,
+    805, 843, 873, 903, 930, 964, 1008, 1055, 1115, 1128, 1142, 1200, 1226, 1258, 1293, 1308, 1375, 1476, 1520, 1562,
+    1574, 1680, 1824 };
+
diff --git a/src/erasure-code/jerasure/jerasure/src/cauchy_best_r6.c b/src/erasure-code/jerasure/jerasure/src/cauchy_best_r6.c
new file mode 100644
index 00000000..8a52e59a
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/cauchy_best_r6.c
@@ -0,0 +1,1983 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+
+#include "galois.h"
+#include "jerasure.h"
+#include "cauchy.h"
+
+static int PPs[33] = { -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1,
+                       -1, -1, -1, -1, -1, -1, -1, -1, -1 };
+static int NOs[33];
+static int ONEs[33][33];
+
+static int *cbest_0;
+static int *cbest_1;
+static int cbest_2[3];
+static int cbest_3[7];
+static int cbest_4[15];
+static int cbest_5[31];
+static int cbest_6[63];
+static int cbest_7[127];
+static int cbest_8[255];
+static int cbest_9[511];
+static int cbest_10[1023];
+static int cbest_11[1023]; 
+static int cbest_12[1023], cbest_13[1023], cbest_14[1023], cbest_15[1023], cbest_16[1023], cbest_17[1023], cbest_18[1023],
+           cbest_19[1023], cbest_20[1023], cbest_21[1023], cbest_22[1023], cbest_23[1023], cbest_24[1023], cbest_25[1023],
+           cbest_26[1023], cbest_27[1023], cbest_28[1023], cbest_29[1023], cbest_30[1023], cbest_31[1023];
+static unsigned int cbest_32[1023];
+
+static int cbest_max_k[33] = { -1, -1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 1023, 
+     1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023, 1023,
+     1023, 1023, 1023, 1023 };
+
+static int cbest_init = 0;
+
+static int *cbest_all[33];
+
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+int cauchy_n_ones(int n, int w)
+{
+  int no;
+  int cno;
+  int nones;
+  int i, j;
+  int highbit;
+
+  highbit = (1 << (w-1));
+
+  if (PPs[w] == -1) {
+    nones = 0;
+    PPs[w] = galois_single_multiply(highbit, 2, w);
+    for (i = 0; i < w; i++) {
+      if (PPs[w] & (1 << i)) {
+        ONEs[w][nones] = (1 << i);
+        nones++;
+      }
+    }
+    NOs[w] = nones;
+  }
+
+  no = 0;
+  for (i = 0; i < w; i++) if (n & (1 << i)) no++;
+  cno = no;
+  for (i = 1; i < w; i++) {
+    if (n & highbit) {
+      n ^= highbit;
+      n <<= 1;
+      n ^= PPs[w];
+      cno--;
+      for (j = 0; j < NOs[w]; j++) {
+        cno += (n & ONEs[w][j]) ? 1 : -1;
+      }
+    } else {
+      n <<= 1;
+    } 
+    no += cno;
+  }
+  return no;
+}
+  
+int *cauchy_original_coding_matrix(int k, int m, int w)
+{
+  int *matrix;
+  int i, j, index;
+
+  if (w < 31 && (k+m) > (1 << w)) return NULL;
+  matrix = talloc(int, k*m);
+  if (matrix == NULL) return NULL;
+  index = 0;
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[index] = galois_single_divide(1, (i ^ (m+j)), w);
+      index++;
+    }
+  }
+  return matrix;
+}
+
+int *cauchy_xy_coding_matrix(int k, int m, int w, int *X, int *Y)
+{
+  int index, i, j;
+  int *matrix;
+
+  matrix = talloc(int, k*m);
+  if (matrix == NULL) { return NULL; }
+  index = 0;
+  for (i = 0; i < m; i++) {
+    for (j = 0; j < k; j++) {
+      matrix[index] = galois_single_divide(1, (X[i] ^ Y[j]), w);
+      index++;
+    }
+  }
+  return matrix;
+}
+
+void cauchy_improve_coding_matrix(int k, int m, int w, int *matrix)
+{
+  int index, i, j, x;
+  int tmp;
+  int bno, tno, bno_index;
+
+  for (j = 0; j < k; j++) {
+    if (matrix[j] != 1) {
+      tmp = galois_single_divide(1, matrix[j], w);
+      index = j;
+      for (i = 0; i < m; i++) {
+        matrix[index] = galois_single_multiply(matrix[index], tmp, w);
+        index += k;
+      }
+    }
+  }
+  for (i = 1; i < m; i++) {
+    bno = 0;
+    index = i*k;
+    for (j = 0; j < k; j++) bno += cauchy_n_ones(matrix[index+j], w);
+    bno_index = -1;
+    for (j = 0; j < k; j++) {
+      if (matrix[index+j] != 1) {
+        tmp = galois_single_divide(1, matrix[index+j], w);
+        tno = 0;
+        for (x = 0; x < k; x++) {
+          tno += cauchy_n_ones(galois_single_multiply(matrix[index+x], tmp, w), w);
+        }
+        if (tno < bno) {
+          bno = tno;
+          bno_index = j;
+        }
+      }
+    }
+    if (bno_index != -1) {
+      tmp = galois_single_divide(1, matrix[index+bno_index], w);
+      for (j = 0; j < k; j++) {
+        matrix[index+j] = galois_single_multiply(matrix[index+j], tmp, w);
+      }
+    }
+  }
+}
+
+int *cauchy_good_general_coding_matrix(int k, int m, int w)
+{
+  int *matrix, i;
+
+  if (m == 2 && k <= cbest_max_k[w]) {
+    matrix = talloc(int, k*m);
+    if (matrix == NULL) return NULL;
+    if (!cbest_init) {
+      cbest_init = 1;
+      cbest_all[0] = cbest_0; cbest_all[1] = cbest_1; cbest_all[2] = cbest_2; cbest_all[3] = cbest_3; cbest_all[4] =
+      cbest_4; cbest_all[5] = cbest_5; cbest_all[6] = cbest_6; cbest_all[7] = cbest_7; cbest_all[8] = cbest_8;
+      cbest_all[9] = cbest_9; cbest_all[10] = cbest_10; cbest_all[11] = cbest_11; cbest_all[12] = cbest_12;
+      cbest_all[13] = cbest_13; cbest_all[14] = cbest_14; cbest_all[15] = cbest_15; cbest_all[16] = cbest_16;
+      cbest_all[17] = cbest_17; cbest_all[18] = cbest_18; cbest_all[19] = cbest_19; cbest_all[20] = cbest_20;
+      cbest_all[21] = cbest_21; cbest_all[22] = cbest_22; cbest_all[23] = cbest_23; cbest_all[24] = cbest_24;
+      cbest_all[25] = cbest_25; cbest_all[26] = cbest_26; cbest_all[27] = cbest_27; cbest_all[28] = cbest_28;
+      cbest_all[29] = cbest_29; cbest_all[30] = cbest_30; cbest_all[31] = cbest_31; cbest_all[32] = (int *) cbest_32;
+    }
+    for (i = 0; i < k; i++) {
+      matrix[i] = 1;
+      matrix[i+k] = cbest_all[w][i];
+    }
+    return matrix;
+  } else {
+    matrix = cauchy_original_coding_matrix(k, m, w);
+    if (matrix == NULL) return NULL;
+    cauchy_improve_coding_matrix(k, m, w, matrix);
+    return matrix;
+  }
+}
+
+static int cbest_2[3] = { 1, 2, 3 };
+static int cbest_3[7] = { 1, 2, 5, 4, 7, 3, 6 };
+
+static int cbest_4[15] = { 1, 2, 9, 4, 8, 13, 3, 6, 12, 5, 11, 15, 10, 14, 7 };
+
+static int cbest_5[31] = { 1, 2, 18, 4, 9, 8, 22, 16, 3, 11, 19, 5, 10, 6, 20, 27, 13, 23, 26, 12,
+    17, 25, 24, 31, 30, 7, 15, 21, 29, 14, 28 };
+
+static int cbest_6[63] = { 1, 2, 33, 4, 8, 49, 16, 32, 57, 3, 6, 12, 24, 48, 5, 35, 9, 37, 10, 17,
+    41, 51, 56, 61, 18, 28, 53, 14, 20, 34, 7, 13, 25, 36, 59, 26, 39, 40, 45, 50, 60, 52, 63,
+    11, 30, 55, 19, 22, 29, 43, 58, 15, 21, 38, 44, 47, 62, 27, 54, 42, 31, 23, 46 };
+
+static int cbest_7[127] = { 1, 2, 68, 4, 34, 8, 17, 16, 76, 32, 38, 3, 64, 69, 5, 19, 35, 70, 6, 9,
+    18, 102, 10, 36, 85, 12, 21, 42, 51, 72, 77, 84, 20, 25, 33, 50, 78, 98, 24, 39, 49, 100, 110
+   , 48, 65, 93, 40, 66, 71, 92, 7, 46, 55, 87, 96, 103, 106, 11, 23, 37, 54, 81, 86, 108, 13,
+    22, 27, 43, 53, 73, 80, 14, 26, 52, 74, 79, 99, 119, 44, 95, 101, 104, 111, 118, 29, 59, 89,
+    94, 117, 28, 41, 58, 67, 88, 115, 116, 47, 57, 83, 97, 107, 114, 127, 56, 82, 109, 113, 126,
+    112, 125, 15, 63, 75, 123, 124, 31, 45, 62, 91, 105, 122, 30, 61, 90, 121, 60, 120 };
+
+static int cbest_8[255] = { 1, 2, 142, 4, 71, 8, 70, 173, 3, 35, 143, 16, 17, 67, 134, 140, 172, 6, 34
+   , 69, 201, 216, 5, 33, 86, 12, 65, 138, 158, 159, 175, 10, 32, 43, 66, 108, 130, 193, 234, 9,
+    24, 25, 50, 68, 79, 100, 132, 174, 200, 217, 20, 21, 42, 48, 87, 169, 41, 54, 64, 84, 96, 117
+   , 154, 155, 165, 226, 77, 82, 135, 136, 141, 168, 192, 218, 238, 7, 18, 19, 39, 40, 78, 113,
+    116, 128, 164, 180, 195, 205, 220, 232, 14, 26, 27, 58, 109, 156, 157, 203, 235, 13, 28, 29, 38
+   , 51, 56, 75, 85, 90, 101, 110, 112, 139, 171, 11, 37, 49, 52, 76, 83, 102, 119, 131, 150, 151
+   , 167, 182, 184, 188, 197, 219, 224, 45, 55, 80, 94, 97, 133, 170, 194, 204, 221, 227, 236, 36,
+    47, 73, 92, 98, 104, 118, 152, 153, 166, 202, 207, 239, 251, 22, 23, 44, 74, 91, 148, 149, 161
+   , 181, 190, 233, 46, 59, 88, 137, 146, 147, 163, 196, 208, 212, 222, 250, 57, 81, 95, 106, 111,
+    129, 160, 176, 199, 243, 249, 15, 53, 72, 93, 103, 115, 125, 162, 183, 185, 189, 206, 225, 255,
+    186, 210, 230, 237, 242, 248, 30, 31, 62, 89, 99, 105, 114, 121, 124, 178, 209, 213, 223, 228,
+    241, 254, 60, 191, 198, 247, 120, 240, 107, 127, 144, 145, 177, 211, 214, 246, 245, 123, 126,
+    187, 231, 253, 63, 179, 229, 244, 61, 122, 215, 252 };
+
+static int cbest_9[511] = { 1, 2, 264, 4, 132, 8, 66, 16, 33, 32, 280, 64, 140, 128, 3, 70, 265, 5,
+    133, 256, 266, 6, 9, 35, 67, 134, 268, 396, 10, 17, 34, 330, 12, 18, 68, 198, 297, 20, 37, 74
+   , 136, 148, 165, 281, 296, 24, 36, 41, 65, 82, 99, 164, 272, 282, 388, 40, 49, 98, 141, 194,
+    284, 328, 412, 48, 97, 129, 142, 196, 346, 71, 72, 96, 130, 313, 392, 80, 206, 257, 267, 312,
+    334, 7, 135, 156, 173, 192, 258, 269, 397, 404, 11, 78, 144, 161, 172, 260, 270, 299, 331, 344,
+    398, 13, 19, 39, 69, 86, 103, 160, 167, 199, 202, 298, 322, 384, 14, 21, 38, 43, 75, 102, 137,
+    149, 166, 204, 289, 332, 408, 462, 22, 25, 42, 51, 83, 101, 138, 150, 273, 283, 288, 301, 350,
+    389, 429, 26, 50, 76, 100, 195, 274, 285, 300, 329, 363, 390, 413, 428, 28, 45, 84, 143, 197,
+    200, 214, 231, 276, 286, 315, 320, 347, 362, 414, 458, 44, 53, 73, 90, 107, 131, 152, 169, 181,
+    230, 314, 338, 361, 393, 400, 454, 460, 52, 57, 81, 106, 115, 168, 175, 180, 207, 229, 305, 335
+   , 348, 360, 394, 421, 478, 56, 105, 114, 157, 163, 174, 193, 210, 227, 228, 259, 304, 317, 326,
+    405, 420, 445, 79, 104, 113, 145, 158, 162, 212, 226, 261, 271, 316, 345, 379, 399, 406, 444,
+    450, 456, 87, 88, 112, 146, 203, 225, 262, 291, 323, 336, 378, 385, 425, 452, 474, 15, 205, 222
+   , 224, 239, 290, 303, 333, 367, 377, 386, 409, 424, 431, 463, 470, 476, 23, 139, 151, 189, 208,
+    238, 302, 324, 351, 366, 376, 410, 430, 437, 27, 47, 77, 94, 111, 177, 188, 237, 275, 293, 342,
+    365, 391, 436, 448, 29, 46, 55, 85, 110, 119, 171, 176, 183, 201, 215, 218, 235, 236, 277, 287,
+    292, 321, 355, 364, 415, 417, 459, 466, 472, 30, 54, 59, 91, 109, 118, 153, 170, 182, 220, 234,
+    278, 307, 339, 354, 401, 416, 423, 441, 455, 461, 468, 495, 58, 108, 117, 154, 233, 306, 319,
+    349, 353, 383, 395, 402, 422, 440, 447, 479, 494, 92, 116, 211, 232, 318, 327, 340, 352, 382,
+    446, 493, 61, 159, 213, 216, 247, 309, 381, 407, 427, 451, 457, 464, 491, 492, 60, 89, 123, 147
+   , 185, 246, 263, 308, 337, 371, 380, 426, 433, 453, 475, 487, 490, 122, 184, 191, 223, 245, 370,
+    387, 432, 439, 471, 477, 486, 489, 511, 121, 179, 190, 209, 243, 244, 295, 325, 359, 369, 411,
+    438, 485, 488, 510, 95, 120, 178, 242, 294, 343, 358, 368, 419, 449, 483, 484, 509, 219, 241,
+    357, 418, 443, 467, 473, 482, 507, 508, 31, 221, 240, 255, 279, 356, 442, 469, 481, 503, 506,
+    155, 254, 403, 480, 502, 505, 63, 93, 127, 253, 311, 341, 375, 501, 504, 62, 126, 187, 217, 251
+   , 252, 310, 374, 435, 465, 499, 500, 125, 186, 250, 373, 434, 498, 124, 249, 372, 497, 248, 496
+    };
+
+static int cbest_10[1023] = { 1, 2, 516, 4, 258, 8, 129, 16, 32, 580, 64, 128, 290, 145, 256, 3, 512,
+    517, 5, 259, 518, 588, 6, 9, 18, 36, 72, 144, 774, 10, 17, 131, 262, 288, 524, 645, 12, 33,
+    133, 266, 294, 387, 532, 576, 581, 20, 34, 65, 137, 274, 548, 582, 24, 66, 291, 838, 40, 68,
+    130, 147, 161, 322, 644, 709, 806, 48, 132, 193, 257, 386, 596, 80, 136, 298, 419, 612, 661, 772
+   , 96, 149, 260, 272, 306, 403, 513, 146, 153, 160, 264, 292, 385, 514, 519, 544, 584, 589, 708,
+    870, 7, 19, 37, 73, 192, 354, 590, 770, 775, 11, 38, 74, 177, 263, 289, 418, 520, 525, 534, 641
+   , 660, 725, 802, 836, 846, 13, 22, 76, 148, 209, 267, 295, 320, 330, 402, 526, 528, 533, 577,
+    647, 717, 804, 14, 21, 26, 35, 44, 135, 152, 165, 201, 275, 304, 384, 401, 435, 549, 578, 583,
+    604, 608, 782, 903, 25, 52, 67, 88, 139, 270, 296, 391, 417, 550, 620, 653, 790, 834, 839, 41,
+    50, 69, 104, 141, 176, 278, 302, 323, 395, 423, 540, 598, 640, 705, 724, 807, 866, 28, 42, 49,
+    70, 82, 100, 163, 208, 282, 310, 556, 592, 597, 646, 663, 677, 711, 716, 868, 878, 81, 134, 151
+   , 164, 195, 200, 299, 326, 352, 362, 400, 434, 564, 613, 657, 768, 773, 902, 967, 97, 138, 155,
+    169, 197, 261, 273, 307, 358, 390, 416, 433, 451, 614, 652, 733, 800, 814, 844, 854, 935, 56, 84
+   , 98, 140, 181, 217, 265, 293, 328, 338, 394, 422, 515, 545, 585, 704, 788, 822, 871, 919, 162,
+    179, 276, 355, 407, 427, 546, 586, 591, 616, 662, 669, 676, 710, 727, 741, 771, 780, 901, 39, 75
+   , 150, 157, 194, 211, 225, 268, 280, 308, 314, 389, 411, 439, 521, 530, 535, 628, 656, 721, 803,
+    832, 837, 842, 847, 966, 23, 77, 112, 154, 168, 196, 300, 321, 331, 393, 421, 432, 450, 522, 527
+   , 529, 552, 606, 643, 673, 693, 713, 732, 805, 864, 874, 934, 999, 15, 27, 45, 54, 78, 90, 108,
+    180, 216, 305, 483, 560, 579, 600, 605, 609, 719, 778, 783, 852, 876, 886, 899, 918, 983, 46, 53
+   , 89, 167, 178, 185, 203, 213, 271, 297, 324, 334, 336, 360, 370, 406, 426, 467, 542, 551, 610,
+    621, 649, 668, 726, 740, 786, 791, 810, 820, 835, 900, 917, 931, 951, 965, 975, 30, 51, 105, 156
+   , 205, 210, 224, 279, 303, 356, 366, 388, 405, 410, 438, 449, 459, 536, 541, 594, 599, 622, 655,
+    720, 812, 818, 862, 867, 933, 29, 43, 71, 83, 92, 101, 106, 143, 173, 283, 311, 312, 346, 392,
+    409, 420, 437, 443, 557, 566, 593, 642, 659, 672, 692, 707, 712, 737, 757, 869, 879, 911, 998,
+    60, 102, 241, 327, 353, 363, 399, 425, 482, 558, 565, 624, 679, 718, 735, 749, 769, 798, 898,
+    963, 982, 58, 86, 166, 183, 184, 202, 212, 219, 233, 286, 359, 431, 466, 615, 636, 648, 689, 729
+   , 801, 815, 840, 845, 850, 855, 884, 916, 930, 950, 964, 974, 981, 995, 1015, 57, 85, 99, 120,
+    171, 199, 204, 229, 318, 329, 339, 368, 404, 448, 458, 465, 499, 654, 671, 685, 784, 789, 823,
+    872, 882, 915, 932, 949, 997, 1007, 116, 142, 159, 172, 277, 408, 436, 442, 455, 481, 491, 547,
+    572, 587, 617, 630, 658, 665, 706, 723, 736, 756, 776, 781, 816, 860, 894, 897, 910, 947, 991,
+    114, 221, 240, 269, 281, 309, 315, 332, 342, 344, 378, 398, 424, 441, 475, 487, 531, 618, 629,
+    678, 695, 734, 743, 748, 808, 833, 843, 929, 943, 962, 973, 113, 182, 189, 218, 227, 232, 301,
+    364, 374, 430, 457, 523, 553, 562, 602, 607, 688, 728, 753, 796, 830, 865, 875, 927, 980, 994,
+    1014, 55, 79, 91, 109, 170, 187, 198, 215, 228, 284, 415, 464, 498, 554, 561, 601, 670, 675, 684
+   , 715, 745, 765, 779, 848, 853, 877, 887, 909, 914, 948, 979, 996, 1006, 1013, 47, 110, 158, 249
+   , 316, 325, 335, 337, 361, 371, 397, 447, 454, 480, 490, 497, 538, 543, 611, 632, 664, 722, 787,
+    811, 821, 880, 896, 913, 946, 961, 971, 990, 1011, 31, 94, 220, 245, 357, 367, 429, 440, 474,
+    486, 537, 595, 623, 651, 681, 694, 701, 742, 759, 813, 819, 858, 863, 892, 928, 942, 945, 972,
+    989, 993, 1003, 1023, 62, 93, 107, 188, 207, 226, 237, 243, 313, 340, 347, 376, 456, 471, 473,
+    507, 567, 568, 626, 752, 890, 907, 926, 1005, 61, 103, 124, 175, 186, 214, 372, 414, 453, 463,
+    489, 503, 559, 625, 638, 674, 691, 714, 731, 739, 744, 764, 794, 799, 828, 908, 925, 939, 959,
+    978, 1012, 59, 87, 122, 248, 287, 350, 396, 413, 446, 485, 495, 496, 637, 751, 826, 841, 851,
+    885, 912, 941, 960, 970, 977, 1010, 118, 121, 235, 244, 319, 369, 382, 428, 445, 574, 650, 667,
+    680, 700, 758, 761, 785, 873, 883, 944, 988, 992, 1002, 1009, 1022, 117, 206, 223, 231, 236, 242
+   , 470, 472, 506, 573, 631, 687, 777, 817, 856, 861, 895, 906, 987, 1004, 1021, 115, 174, 191, 333
+   , 343, 345, 379, 452, 462, 469, 488, 502, 505, 619, 690, 697, 730, 738, 755, 809, 888, 924, 938,
+    958, 969, 1019, 253, 365, 375, 412, 484, 494, 501, 563, 603, 750, 767, 792, 797, 831, 923, 940,
+    957, 976, 1001, 234, 251, 285, 348, 444, 479, 555, 634, 666, 760, 824, 849, 905, 955, 1008, 111,
+    222, 230, 247, 317, 380, 461, 511, 539, 633, 686, 703, 747, 881, 937, 986, 1020, 95, 190, 468,
+    493, 504, 570, 696, 754, 859, 893, 968, 985, 1018, 63, 126, 252, 341, 377, 500, 569, 627, 683,
+    766, 891, 922, 956, 1000, 1017, 125, 239, 250, 373, 478, 639, 795, 829, 904, 921, 954, 123, 246,
+    351, 460, 477, 510, 702, 746, 763, 827, 936, 953, 119, 383, 492, 509, 575, 984, 682, 699, 857,
+    1016, 238, 255, 889, 920, 476, 762, 793, 952, 349, 508, 635, 825, 381, 698, 254, 571, 127 };
+
+static int cbest_11[1023] = { 1,
+    2, 1026, 4, 513, 8, 16, 1282, 32, 64, 641, 128, 256, 512, 1346, 1024, 3, 673, 1027, 5, 10, 20, 40, 80, 160, 320,
+    640, 6, 9, 515, 1030, 1280, 1539, 17, 517, 1034, 1283, 12, 18, 33, 521, 1042, 1362, 34, 65, 529, 1058, 1286, 1795,
+    24, 36, 66, 129, 545, 643, 1090, 1290, 1667, 68, 130, 257, 577, 645, 672, 1154, 1298, 1344, 48, 72, 132, 258, 336,
+    649, 681, 1314, 1347, 136, 168, 260, 514, 657, 769, 1538, 1923, 84, 96, 144, 264, 516, 1025, 1350, 1410, 1859, 42,
+    272, 520, 705, 1032, 1354, 11, 21, 41, 81, 161, 192, 288, 321, 528, 675, 1028, 1537, 1699, 1794, 7, 22, 82, 162,
+    322, 544, 642, 677, 897, 1031, 1046, 1066, 1106, 1186, 1281, 1366, 1378, 1666, 14, 44, 164, 324, 384, 523, 533,
+    553, 576, 593, 644, 833, 1035, 1040, 1288, 1360, 1987, 13, 19, 28, 88, 328, 519, 648, 680, 689, 1043, 1056, 1284,
+    1363, 1474, 1543, 1793, 1955, 26, 35, 56, 176, 656, 768, 1038, 1059, 1088, 1287, 1302, 1322, 1442, 1547, 1665,
+    1922, 25, 37, 52, 67, 112, 340, 352, 525, 531, 737, 1091, 1152, 1291, 1296, 1555, 1858, 1875, 38, 69, 74, 104, 131,
+    224, 547, 651, 661, 683, 704, 721, 961, 1050, 1062, 1155, 1299, 1312, 1345, 1370, 1571, 1799, 49, 70, 73, 133, 138,
+    148, 170, 208, 259, 337, 448, 537, 549, 579, 647, 674, 929, 1094, 1294, 1315, 1352, 1536, 1603, 1671, 1698, 1803,
+    1921, 50, 134, 137, 169, 261, 266, 276, 296, 338, 416, 581, 676, 896, 1074, 1098, 1158, 1348, 1394, 1408, 1675,
+    1707, 1811, 1857, 2019, 76, 85, 97, 145, 262, 265, 522, 532, 552, 561, 585, 592, 653, 659, 685, 771, 832, 849,
+    1064, 1162, 1194, 1306, 1318, 1351, 1386, 1411, 1506, 1683, 1827, 1986, 2003, 43, 86, 98, 140, 146, 172, 273, 344,
+    518, 688, 773, 1033, 1110, 1122, 1170, 1355, 1490, 1542, 1697, 1792, 1927, 1954, 100, 193, 268, 274, 289, 597, 609,
+    665, 697, 707, 777, 1029, 1044, 1104, 1184, 1330, 1364, 1376, 1414, 1546, 1664, 1731, 1863, 1931, 1963, 23, 46, 83,
+    92, 152, 163, 184, 194, 290, 323, 368, 524, 530, 555, 693, 709, 736, 753, 785, 993, 1036, 1047, 1067, 1107, 1187,
+    1218, 1320, 1358, 1367, 1379, 1418, 1450, 1545, 1554, 1867, 1874, 1939, 1985, 15, 30, 45, 60, 90, 120, 165, 180,
+    196, 240, 280, 292, 325, 330, 360, 385, 480, 546, 650, 660, 679, 682, 713, 720, 745, 801, 899, 960, 977, 1041,
+    1289, 1361, 1426, 1472, 1541, 1570, 1703, 1798, 1953, 29, 58, 89, 116, 166, 200, 232, 326, 329, 386, 464, 535, 536,
+    548, 578, 595, 646, 835, 901, 928, 1048, 1057, 1070, 1190, 1285, 1300, 1368, 1382, 1440, 1475, 1559, 1579, 1602,
+    1619, 1670, 1802, 1879, 1891, 1920, 27, 57, 177, 304, 388, 527, 557, 580, 691, 725, 837, 905, 937, 1039, 1054,
+    1089, 1114, 1292, 1303, 1323, 1374, 1443, 1553, 1674, 1706, 1715, 1801, 1810, 1856, 1873, 1991, 2018, 2035, 53,
+    106, 113, 178, 212, 332, 341, 353, 392, 424, 541, 560, 584, 601, 652, 658, 684, 770, 841, 848, 913, 1060, 1082,
+    1096, 1153, 1202, 1297, 1402, 1478, 1522, 1569, 1673, 1682, 1705, 1797, 1826, 1959, 1995, 2002, 2027, 39, 54, 75,
+    105, 114, 225, 342, 354, 400, 539, 569, 739, 772, 1051, 1063, 1078, 1092, 1138, 1160, 1192, 1304, 1313, 1326, 1371,
+    1384, 1398, 1446, 1482, 1514, 1551, 1601, 1669, 1696, 1763, 1815, 1835, 1926, 71, 139, 149, 171, 209, 226, 298,
+    356, 449, 565, 596, 608, 625, 663, 664, 696, 706, 723, 741, 776, 853, 865, 963, 1072, 1095, 1130, 1156, 1250, 1295,
+    1310, 1353, 1392, 1687, 1730, 1747, 1809, 1862, 1930, 1962, 1971, 2007, 2017, 51, 78, 108, 135, 150, 210, 228, 267,
+    277, 297, 339, 348, 417, 450, 551, 554, 587, 617, 655, 687, 692, 708, 752, 784, 931, 965, 992, 1009, 1075, 1099,
+    1159, 1174, 1234, 1316, 1338, 1349, 1395, 1409, 1458, 1494, 1504, 1544, 1563, 1575, 1681, 1825, 1866, 1883, 1929,
+    1938, 1961, 1984, 2001, 77, 142, 174, 263, 278, 346, 376, 418, 452, 496, 583, 669, 678, 701, 712, 729, 744, 761,
+    800, 898, 933, 969, 976, 1001, 1065, 1108, 1120, 1163, 1168, 1195, 1307, 1319, 1334, 1356, 1387, 1416, 1448, 1488,
+    1507, 1540, 1607, 1702, 1807, 1865, 1925, 1952, 87, 99, 141, 147, 156, 173, 188, 216, 248, 270, 300, 345, 372, 420,
+    456, 488, 534, 563, 594, 667, 699, 757, 779, 789, 809, 834, 851, 900, 1102, 1111, 1123, 1171, 1328, 1412, 1491,
+    1558, 1578, 1587, 1611, 1618, 1679, 1711, 1729, 1861, 1878, 1890, 1907, 1943, 2023, 94, 101, 124, 154, 186, 244,
+    269, 275, 284, 526, 556, 589, 690, 724, 775, 836, 904, 936, 945, 981, 1045, 1068, 1105, 1166, 1185, 1198, 1216,
+    1331, 1365, 1377, 1390, 1415, 1430, 1510, 1552, 1577, 1714, 1800, 1819, 1831, 1872, 1899, 1937, 1990, 2034, 47, 62,
+    93, 102, 122, 153, 185, 195, 282, 291, 312, 362, 369, 432, 468, 540, 599, 600, 611, 715, 747, 840, 857, 912, 1037,
+    1052, 1112, 1126, 1219, 1321, 1359, 1372, 1419, 1424, 1451, 1568, 1623, 1635, 1672, 1691, 1701, 1704, 1723, 1796,
+    1958, 1994, 2011, 2026, 2043, 31, 61, 91, 121, 181, 197, 202, 234, 241, 281, 293, 308, 331, 361, 370, 481, 538,
+    568, 613, 695, 711, 738, 755, 781, 787, 995, 1080, 1118, 1178, 1188, 1210, 1380, 1400, 1427, 1473, 1498, 1530,
+    1550, 1557, 1600, 1617, 1668, 1719, 1735, 1762, 1779, 1814, 1834, 1843, 1877, 1889, 1935, 1967, 1993, 2025, 2039,
+    59, 117, 167, 182, 198, 201, 233, 242, 294, 327, 387, 465, 482, 559, 564, 605, 624, 662, 722, 740, 803, 852, 864,
+    881, 907, 917, 939, 962, 979, 997, 1049, 1071, 1086, 1146, 1191, 1206, 1222, 1266, 1301, 1324, 1369, 1383, 1406,
+    1422, 1441, 1454, 1480, 1512, 1526, 1549, 1686, 1713, 1739, 1746, 1771, 1808, 1833, 1871, 1970, 1989, 2006, 2016,
+    2033, 118, 305, 334, 364, 389, 394, 404, 426, 466, 484, 543, 550, 573, 586, 603, 616, 633, 654, 686, 717, 749, 793,
+    805, 843, 873, 903, 930, 964, 1008, 1055, 1115, 1128, 1142, 1200, 1226, 1258, 1293, 1308, 1375, 1476, 1520, 1562,
+    1574, 1680, 1824 };
+
+static int cbest_12[1023] = {
+    1, 2, 2089, 4, 8, 3133, 16, 2088, 1044, 3, 32, 522, 261, 3639, 5, 64, 65, 2057, 2091, 6, 130, 3132, 260,
+    2219, 9, 2093, 3117, 10, 128, 257, 2081, 3890, 12, 1566, 2217, 3129, 17, 514, 520, 3135, 18, 3196, 3637, 20,
+    256, 1028, 1045, 3638, 24, 33, 523, 783, 2105, 3197, 3647, 34, 1040, 1945, 2056, 2090, 2595, 3125, 3891, 36,
+    1046, 2348, 40, 1598, 2218, 3635, 7, 48, 66, 67, 131, 263, 269, 512, 538, 782, 1076, 1174, 1819, 2049, 2059,
+    2092, 2152, 3113, 3116, 3384, 3607, 3888, 68, 69, 277, 554, 1108, 1109, 1558, 1564, 1944, 2061, 2080, 2478,
+    3894, 72, 73, 134, 265, 293, 391, 526, 586, 587, 779, 2153, 2211, 2216, 2563, 3128, 4016, 11, 14, 80, 81,
+    129, 132, 138, 530, 1172, 1692, 2073, 2095, 2223, 2316, 3101, 3109, 3119, 3134, 3645, 3874, 13, 96, 97, 146,
+    259, 262, 268, 289, 799, 1052, 1060, 1158, 1567, 1818, 2083, 2221, 2344, 2349, 2476, 2980, 3045, 3192, 3368,
+    3636, 144, 162, 276, 389, 515, 521, 578, 579, 781, 972, 1024, 1156, 2085, 2120, 2235, 2282, 2312, 3131, 3623,
+    19, 22, 28, 160, 194, 195, 264, 292, 390, 778, 846, 1238, 1239, 1562, 1596, 1684, 1937, 1947, 2104, 2233,
+    2593, 3193, 3385, 3633, 3643, 3646, 3889, 21, 26, 324, 518, 536, 909, 1029, 1297, 2008, 2121, 2209, 2283,
+    2479, 2594, 2854, 3085, 3121, 3124, 3188, 3198, 3605, 3895, 25, 136, 258, 288, 528, 552, 798, 842, 1030,
+    1140, 1141, 1490, 1556, 2470, 2603, 2626, 2721, 3892, 3898, 4017, 35, 38, 44, 56, 320, 388, 423, 486, 524,
+    570, 584, 585, 618, 619, 648, 777, 780, 1041, 1594, 1817, 2097, 2107, 2317, 2561, 3105, 3164, 3189, 3199,
+    3263, 3634, 3875, 37, 42, 52, 285, 309, 421, 1036, 1042, 1047, 1056, 1072, 1170, 1313, 1427, 1823, 1936,
+    1946, 2048, 2053, 2058, 2065, 2109, 2280, 2345, 2477, 2579, 2627, 2981, 3041, 3044, 3112, 3127, 3369, 3388,
+    3603, 3606, 3631, 3765, 3872, 41, 192, 193, 273, 399, 775, 797, 908, 968, 1104, 1105, 1168, 1236, 1237, 1281,
+    1296, 1554, 1582, 1599, 1949, 2051, 2060, 2313, 2332, 2340, 2474, 3115, 3165, 3336, 3360, 3641, 4018, 49, 70,
+    71, 76, 77, 88, 89, 112, 113, 387, 454, 484, 513, 516, 539, 640, 744, 745, 1004, 1077, 1175, 1234, 1235,
+    1550, 1668, 1680, 1694, 1803, 2063, 2112, 2210, 2215, 2227, 2281, 2472, 2562, 2784, 3261, 3449, 3547, 3591,
+    3621, 84, 85, 104, 105, 142, 154, 178, 226, 227, 242, 243, 267, 271, 385, 422, 534, 555, 771, 776, 791, 834,
+    840, 844, 973, 1068, 1078, 1166, 1425, 1488, 1559, 1560, 1565, 1688, 1816, 2072, 2077, 2094, 2136, 2144,
+    2154, 2222, 2298, 2336, 2350, 2468, 2543, 2611, 2624, 2658, 2729, 2850, 2855, 2982, 3081, 3097, 3100, 3108,
+    3118, 3184, 3247, 3326, 3376, 3644, 3702, 4024, 82, 83, 135, 164, 170, 210, 211, 279, 284, 308, 328, 356,
+    372, 417, 420, 527, 542, 576, 577, 616, 617, 656, 795, 847, 1048, 1110, 1111, 1312, 1329, 1392, 1426, 1590,
+    1592, 1822, 2082, 2113, 2128, 2156, 2187, 2220, 2364, 2466, 2471, 2785, 2976, 3077, 3111, 3180, 3245, 3882,
+    3893, 3899, 3902, 4081, 15, 30, 50, 60, 98, 99, 120, 121, 133, 139, 166, 272, 291, 295, 325, 340, 398, 419,
+    531, 558, 582, 583, 712, 713, 774, 796, 838, 1064, 1084, 1173, 1182, 1232, 1233, 1280, 1522, 1542, 1676,
+    1693, 1811, 1948, 2009, 2084, 2137, 2145, 2155, 2185, 2213, 2225, 2234, 2286, 2299, 2599, 2601, 2625, 2659,
+    2745, 2870, 2988, 3047, 3130, 3185, 3194, 3327, 3352, 3386, 3545, 3601, 3619, 3622, 3629, 3703, 3733, 3773,
+    3896, 3955, 140, 147, 152, 176, 186, 198, 199, 224, 225, 281, 305, 332, 386, 397, 532, 546, 590, 591, 680,
+    696, 843, 901, 911, 974, 1026, 1032, 1053, 1061, 1116, 1117, 1159, 1164, 1491, 1552, 1802, 1941, 2069, 2087,
+    2122, 2129, 2157, 2168, 2232, 2296, 2314, 2318, 2446, 2567, 2592, 2737, 2852, 3040, 3073, 3093, 3103, 3156,
+    3181, 3389, 3627, 3632, 3642, 3858, 3873, 4020, 74, 75, 145, 163, 168, 208, 209, 266, 270, 321, 384, 395,
+    452, 487, 502, 664, 770, 790, 905, 1025, 1054, 1148, 1149, 1152, 1157, 1301, 1360, 1424, 1578, 1686, 1821,
+    1851, 1929, 1939, 2012, 2208, 2287, 2328, 2333, 2341, 2346, 2381, 2397, 2444, 2464, 2475, 2723, 2752, 3084,
+    3120, 3195, 3337, 3361, 3370, 3417, 3514, 3579, 3604, 3615, 3780, 3878, 3984, 4019, 23, 29, 46, 92, 93, 161,
+    240, 241, 278, 348, 416, 450, 562, 568, 610, 611, 650, 769, 773, 789, 794, 1154, 1222, 1223, 1328, 1376,
+    1494, 1520, 1563, 1597, 1685, 1951, 2010, 2075, 2123, 2169, 2284, 2297, 2473, 2511, 2541, 2602, 2619, 2666,
+    2720, 3107, 3123, 3157, 3294, 3324, 3372, 3448, 3453, 3546, 3587, 3670, 3710, 27, 196, 197, 290, 294, 418,
+    482, 519, 537, 540, 574, 688, 787, 793, 969, 1062, 1142, 1143, 1435, 1548, 1588, 1662, 1663, 1801, 1810,
+    1992, 2055, 2096, 2101, 2106, 2337, 2351, 2469, 2539, 2542, 2560, 2571, 2577, 2634, 2753, 2851, 2919, 2983,
+    3013, 3043, 3104, 3259, 3262, 3322, 3377, 3380, 3441, 3625, 3717, 3767, 3781, 3880, 3900, 3939, 4025, 4049,
+    137, 174, 280, 304, 322, 326, 344, 352, 393, 396, 455, 480, 485, 529, 553, 556, 760, 761, 832, 900, 910, 964,
+    970, 1005, 1031, 1124, 1125, 1180, 1289, 1317, 1333, 1540, 1557, 1574, 1580, 1586, 1690, 1724, 1921, 1940,
+    2052, 2064, 2099, 2108, 2250, 2266, 2285, 2304, 2365, 2467, 2578, 2583, 2609, 2656, 2667, 2848, 2977, 2996,
+    3126, 3166, 3176, 3215, 3239, 3257, 3295, 3325, 3512, 3602, 3617, 3630, 3671, 3700, 3711, 3761, 3764, 3842,
+    3883, 3903, 4080, 39, 45, 57, 148, 172, 184, 287, 297, 336, 394, 448, 525, 544, 571, 588, 589, 649, 746, 747,
+    835, 841, 845, 904, 996, 1006, 1038, 1074, 1080, 1092, 1093, 1178, 1220, 1221, 1300, 1489, 1492, 1538, 1595,
+    1670, 1682, 1756, 1757, 1795, 1815, 1820, 1835, 1850, 1928, 1938, 2050, 2111, 2179, 2356, 2440, 2509, 2565,
+    2587, 2635, 2871, 2915, 2978, 2984, 2989, 3046, 3053, 3114, 3148, 3172, 3207, 3292, 3323, 3340, 3353, 3356,
+    3364, 3387, 3401, 3445, 3544, 3589, 3640, 3729, 3757, 3769, 3796, 3897, 3954, 3959, 251, 373, 581, 1057,
+    1107, 1137, 1299, 1630, 1882, 2214, 2308, 2315, 2319, 2597, 2853, 3167, 3260, 3482, 3590, 3862 };
+
+static int cbest_13[1023] = {
+    1, 2, 4109, 4, 6155, 8, 7176, 16, 3588, 4108, 32, 2054, 3, 1027, 1794, 6, 64, 4620, 6154, 5, 897, 4111, 6153,
+    7177, 12, 2310, 3077, 4105, 128, 9, 24, 513, 1155, 10, 1026, 4101, 7689, 18, 48, 256, 896, 3589, 4365, 6159,
+    7178, 17, 448, 4557, 4621, 4684, 5647, 36, 96, 224, 1025, 1792, 20, 112, 512, 769, 1538, 1795, 2052, 3076,
+    3590, 6147, 6283, 7180, 33, 56, 72, 192, 2055, 2342, 3584, 4125, 6411, 7945, 28, 34, 577, 1154, 6922, 7240,
+    14, 144, 384, 2050, 4110, 4493, 5134, 5903, 6152, 7168, 7304, 7, 40, 65, 1171, 3620, 4104, 4141, 5004, 288,
+    768, 1153, 2308, 2567, 3652, 4097, 4107, 4397, 4685, 6157, 6171, 6379, 7688, 13, 68, 1024, 1810, 2311, 3461,
+    4676, 7179, 66, 129, 576, 1826, 3079, 3844, 4100, 4173, 4622, 5646, 6347, 8073, 25, 80, 899, 905, 1031, 1091,
+    1798, 2182, 2306, 2338, 2502, 3073, 3596, 4364, 4616, 5390, 5645, 6158, 6187, 7050, 7192, 11, 26, 913, 1922,
+    4117, 4556, 4652, 5262, 6151, 6299, 6443, 6923, 7181, 19, 49, 130, 136, 257, 1169, 1283, 1536, 1793, 2062,
+    2326, 2566, 2823, 4103, 4237, 6145, 7182, 7232, 7272, 7691, 7944, 50, 449, 515, 901, 961, 1035, 1163, 1170,
+    1539, 1802, 2048, 2340, 2695, 3586, 3591, 3604, 3616, 4553, 4612, 4680, 4748, 5005, 6146, 6219, 6282, 7208,
+    7241, 7288, 22, 37, 52, 97, 160, 225, 585, 1152, 1251, 1808, 2374, 2631, 3141, 3585, 4124, 4549, 4876, 5135,
+    5902, 6281, 6410, 7169, 7172, 7305, 7320, 7560, 21, 38, 98, 113, 132, 226, 258, 452, 545, 898, 904, 1187,
+    2053, 2070, 2278, 2438, 3205, 3460, 3525, 3636, 3972, 4127, 4137, 4157, 4367, 4677, 5132, 5839, 5901, 6163,
+    6169, 6409, 6666, 7693, 57, 73, 100, 114, 193, 228, 272, 450, 456, 517, 912, 1029, 1043, 1159, 1219, 1796,
+    2343, 3078, 3333, 4113, 4121, 4361, 4381, 4393, 4492, 4559, 4623, 4686, 5518, 6275, 6920, 7721, 8137, 29, 35,
+    44, 74, 104, 146, 641, 1030, 1090, 1730, 1824, 2246, 2318, 2822, 3072, 3085, 3592, 3621, 3660, 3780, 4099,
+    4140, 4149, 4165, 4205, 4333, 4617, 4700, 5454, 5643, 6149, 6377, 7051, 7170, 7244, 7753, 7947, 15, 30, 42,
+    60, 76, 120, 145, 196, 240, 260, 292, 320, 385, 480, 514, 771, 900, 960, 1123, 1411, 1818, 1986, 2051, 2086,
+    2304, 2694, 2951, 3622, 3648, 3653, 4096, 4106, 4221, 4396, 4429, 4589, 4636, 4653, 4716, 5422, 5679, 6156,
+    6170, 6378, 6603, 7184, 7242, 7681, 8072, 41, 58, 194, 200, 521, 581, 584, 785, 865, 1059, 1139, 1168, 1282,
+    1347, 1811, 2058, 2198, 2350, 2565, 2630, 3644, 4301, 4357, 4485, 4732, 5391, 5644, 5711, 6191, 6203, 6287,
+    6297, 7193, 7296, 7306, 70, 88, 148, 208, 289, 544, 579, 801, 1034, 1089, 1099, 1162, 1315, 1570, 1827, 1830,
+    1890, 2309, 2324, 2336, 2358, 2759, 3075, 3093, 3845, 4133, 4143, 4172, 4613, 4648, 4668, 4681, 4749, 4812,
+    4996, 5263, 5278, 5388, 5639, 5775, 6167, 6175, 6185, 6315, 6346, 6383, 6415, 6427, 6447, 7194, 7949, 7961,
+    69, 84, 116, 152, 264, 290, 386, 392, 516, 593, 773, 833, 909, 993, 1033, 1161, 1175, 1250, 1542, 1602, 1799,
+    1800, 1920, 2118, 2498, 2727, 3140, 3597, 3654, 4253, 4389, 4399, 4495, 4672, 4780, 4877, 5260, 6186, 6195,
+    6211, 6251, 6345, 6441, 6794, 6926, 6938, 7018, 7183, 7233, 7256, 7273, 7624, 7690, 7977, 67, 82, 400, 529,
+    609, 640, 929, 1041, 1157, 1179, 1186, 1249, 1281, 1666, 1858, 1923, 2060, 2180, 2334, 2406, 2500, 2563,
+    2711, 3173, 3204, 3463, 3524, 3598, 3628, 3716, 4036, 4116, 4169, 4489, 4509, 4608, 4618, 4660, 4678, 4764,
+    5006, 5130, 5899, 5919, 6150, 6267, 6298, 6351, 6442, 6475, 6667, 6730, 6954, 7048, 7174, 7209, 7212, 7224,
+    7289, 7308, 7400, 7432, 81, 140, 176, 232, 296, 416, 625, 770, 915, 945, 1028, 1042, 1158, 1185, 1218, 1537,
+    1814, 2068, 2183, 2307, 2322, 2339, 2390, 2503, 2950, 3109, 3189, 3332, 3397, 3457, 3606, 3612, 3846, 4102,
+    4236, 4525, 4687, 5000, 5020, 5582, 5641, 5871, 5935, 6144, 6339, 6403, 6539, 6921, 6986, 7173, 7188, 7196,
+    7321, 7336, 7561, 7705, 7937, 8065, 8075, 27, 54, 108, 168, 216, 304, 388, 432, 520, 561, 580, 705, 777, 784,
+    864, 907, 1039, 1167, 1203, 1546, 1803, 1806, 2314, 2366, 2382, 2564, 2639, 2821, 3081, 3084, 3149, 3221,
+    3365, 3469, 3587, 3600, 3605, 3617, 3668, 3840, 4373, 4413, 4541, 4552, 4701, 5133, 5198, 5838, 5900, 6179,
+    6218, 6303, 6395, 6914, 7042, 7216, 7234, 7274, 7322, 7368, 7692, 8169, 131, 137, 164, 464, 578, 673, 800,
+    903, 1095, 1122, 1195, 1410, 1475, 1762, 1809, 1822, 1834, 2056, 2063, 2078, 2082, 2178, 2276, 2327, 2330,
+    2370, 2599, 2627, 2693, 2758, 3137, 3477, 3594, 3618, 3684, 3812, 4119, 4175, 4548, 4555, 4573, 4637, 4644,
+    4654, 4682, 4692, 4717, 5068, 5126, 5254, 5446, 5486, 5519, 5663, 5837, 5895, 6031, 6161, 6217, 6279, 6280,
+    6291, 6435, 7210, 7236, 7276, 7290, 7695, 7720, 7725, 7737, 7745, 8136, 51, 138, 280, 352, 549, 592, 657,
+    772, 832, 908, 917, 992, 1051, 1058, 1121, 1138, 1191, 1217, 1346, 1816, 1842, 2018, 2049, 2066, 2190, 2274,
+    2341, 2346, 2372, 2510, 2629, 2726, 3493, 3521, 3608, 3632, 3637, 3700, 3860, 3973, 4126, 4136, 4156, 4189,
+    4229, 4366, 4405, 4421, 4461, 4628, 4696, 4733, 5276, 5420, 5455, 5470, 5516, 5642, 5677, 6162, 6168, 6223,
+    6273, 6363, 6408, 7171, 7245, 7264, 7752, 7946, 8077, 8089, 23, 53, 134, 161, 336, 454, 496, 528, 608, 921,
+    928, 1057, 1088, 1098, 1107, 1137, 1173, 1314, 1379, 1540, 1554, 1728, 1797, 1930, 2102, 2196, 2316, 2348,
+    2375, 2436, 2562, 2710, 2819, 3074, 3092, 3509, 3638, 3876, 4112, 4120, 4360, 4380, 4392, 4445, 4545, 4558,
+    4565, 4605, 4614, 4649, 4669, 4740, 4813, 4997, 5386, 5406, 5418, 5423, 5452, 5675, 5678, 5695, 5703, 6274,
+    6285, 6371, 6664, 7054, 7066, 7185, 7200, 7243, 7246, 7280, 7324, 7680, 7685, 7729, 7881, 39, 78, 133, 156,
+    162, 227, 274, 312, 328, 453, 519, 569, 624, 914, 965, 1032, 1037, 1075, 1097, 1165, 1313, 1363, 1409, 1825,
+    1828, 1938, 2074, 2084, 2214, 2242, 2279, 2439, 2534, 2691, 3143, 3593, 3650, 3656, 3661, 3781, 4123, 4148,
+    4153, 4239, 4353, 4363, 4481, 4551, 4673, 4781, 5128, 5258, 5358, 5637, 5710, 5807, 5835, 5897, 5917, 6173,
+    6355, 6413, 6419, 6425, 6459, 6795, 6858, 6927, 7019, 7297, 7300, 7307, 7312, 7562, 7723, 7953 };
+
+static int cbest_14[1023] = {
+    1, 2, 8737, 4, 8, 13105, 16, 8736, 32, 4368, 3, 2184, 17, 1092, 15289, 34, 546, 5, 64, 68, 273, 8739, 8745,
+    6, 136, 13104, 272, 9, 8741, 128, 8873, 12, 6552, 13109, 10, 544, 13107, 256, 18, 24, 3276, 8753, 33, 1088,
+    4369, 15288, 16381, 2185, 8705, 13089, 13173, 20, 512, 1093, 2186, 4372, 8195, 8738, 8744, 13113, 35, 66,
+    547, 1094, 1638, 2188, 4370, 4376, 8752, 8865, 12832, 15291, 36, 48, 65, 69, 257, 2176, 6416, 8707, 10921, 7,
+    19, 25, 70, 137, 3208, 8740, 9008, 9829, 13088, 13169, 15281, 96, 132, 138, 277, 554, 1024, 1108, 1604, 6544,
+    8749, 8872, 50, 140, 275, 281, 562, 802, 819, 3272, 4504, 7644, 8747, 8801, 8805, 12833, 13073, 13108, 21,
+    100, 129, 192, 276, 401, 1636, 4352, 4436, 8743, 12563, 13106, 15257, 15293, 13, 38, 40, 72, 130, 200, 264,
+    274, 280, 514, 550, 818, 2216, 2252, 6553, 8193, 8875, 9009, 15259, 11, 14, 49, 384, 400, 545, 1124, 2048,
+    2218, 6554, 8761, 8877, 13075, 13111, 15273, 409, 1100, 1126, 14197, 15153, 15839, 42, 528, 768, 1109, 4097,
+    4432, 8937, 9144, 15016, 16377, 16380, 51, 76, 98, 102, 204, 408, 552, 563, 803, 1090, 2200, 2248, 3277,
+    8203, 8704, 10785, 13172, 144, 260, 548, 560, 800, 817, 1028, 1089, 1536, 3822, 4096, 4353, 8194, 8760,
+    13112, 13117, 13241, 15272, 16365, 28, 258, 265, 1606, 1634, 4380, 6556, 8864, 8869, 8993, 9136, 10913,
+    12561, 12836, 15290, 26, 80, 84, 196, 385, 513, 816, 1056, 2180, 2187, 2190, 3072, 3268, 3278, 4373, 4400,
+    4496, 6145, 7508, 8706, 8755, 8941, 9016, 9145, 9287, 10920, 12013, 12290, 13175, 15017, 22, 67, 152, 1095,
+    1639, 2189, 3212, 3292, 4371, 4374, 4377, 4568, 4572, 6418, 6536, 6584, 8225, 8929, 9825, 9828, 12849, 13093,
+    13141, 13168, 13233, 14129, 14747, 15280, 16373, 16383, 37, 529, 570, 769, 1104, 1600, 1632, 2177, 5460,
+    6144, 6417, 6586, 7636, 8466, 8713, 8748, 8867, 13091, 13097, 13171, 15837, 16313, 16364, 71, 134, 168, 285,
+    392, 520, 530, 770, 1026, 1058, 1096, 2056, 2178, 2201, 2284, 3209, 4233, 4360, 4402, 4508, 4914, 6424, 7640,
+    8709, 8721, 8746, 8757, 8800, 8804, 8992, 9121, 9137, 10923, 11809, 12837, 13072, 13115, 13137, 14193, 15566,
+    97, 133, 139, 142, 145, 261, 288, 305, 337, 555, 561, 785, 801, 1025, 1120, 1140, 1605, 1646, 2112, 2116,
+    2730, 3210, 3264, 3754, 4378, 6420, 6545, 8201, 8211, 8451, 8742, 8754, 8803, 8809, 8841, 8889, 9001, 9017,
+    9831, 10925, 12291, 12562, 12834, 12840, 15161, 15256, 15283, 15292, 29, 56, 141, 259, 268, 279, 284, 674,
+    1110, 1142, 1538, 1570, 1911, 2280, 2457, 3273, 3820, 4232, 4505, 6281, 6546, 7628, 7645, 8192, 8715, 8751,
+    8769, 8874, 9012, 9285, 9317, 12848, 12960, 13057, 13077, 13092, 14880, 15258, 15265, 15285, 15295, 27, 52,
+    74, 81, 85, 101, 160, 193, 304, 336, 516, 558, 784, 1060, 1348, 1365, 1540, 1637, 2052, 2254, 2286, 3140,
+    3200, 3274, 3818, 4225, 4437, 4506, 4560, 6480, 6528, 6548, 7440, 8190, 8199, 8467, 8723, 8807, 8876, 9010,
+    9129, 9837, 11945, 12307, 12547, 13074, 13090, 13096, 13110, 13143, 13655, 14745, 14777, 15241, 15353, 15357,
+    15831, 23, 39, 41, 44, 73, 131, 153, 194, 201, 278, 290, 307, 403, 515, 536, 551, 610, 614, 806, 823, 1116,
+    1122, 1228, 1612, 1910, 2050, 2217, 2220, 2253, 2456, 2696, 3224, 3240, 3293, 3720, 4105, 4438, 6280, 6537,
+    8331, 8720, 8756, 8773, 8879, 8881, 9120, 9761, 9845, 10849, 10853, 12288, 12593, 13157, 13297, 13617, 14196,
+    15008, 15152, 15243, 15567, 15835, 15838, 16245, 15, 58, 112, 170, 202, 283, 341, 405, 571, 682, 810, 1040,
+    1105, 1125, 1364, 1568, 1620, 1860, 1877, 2049, 2192, 2219, 2250, 3076, 4101, 4112, 4224, 4356, 4500, 5392,
+    6448, 6555, 7504, 7646, 8210, 8227, 8450, 8711, 8813, 8888, 8936, 9000, 10889, 12009, 12567, 12835, 12841,
+    12968, 13059, 13177, 13181, 13305, 13309, 14888, 15155, 16108, 16376, 104, 306, 386, 393, 402, 531, 568, 771,
+    822, 930, 1030, 1101, 1127, 1602, 1644, 2120, 2728, 3080, 3288, 3752, 3814, 4104, 4354, 4361, 4434, 4440,
+    4444, 6153, 7576, 8202, 8219, 8464, 8602, 8843, 8933, 9013, 9797, 10784, 10789, 10891, 11877, 12571, 12896,
+    12900, 12961, 13056, 13237, 14097, 14181, 14474, 14881, 15249, 15264, 15275, 16357, 16369, 43, 116, 148, 224,
+    266, 282, 289, 340, 388, 404, 411, 465, 522, 576, 580, 608, 672, 1072, 1102, 1141, 1220, 1876, 1909, 2208,
+    2222, 2240, 2244, 2282, 3136, 4100, 4433, 4468, 4564, 4912, 5456, 6273, 6400, 6484, 7444, 7620, 7632, 8323,
+    8722, 8765, 9011, 9128, 9799, 9965, 10787, 10989, 12306, 12546, 13079, 13116, 13139, 13240, 13245, 14199,
+    15033, 15240, 15251, 15261, 15564, 15869, 16317, 16361, 54, 57, 77, 99, 103, 162, 205, 232, 269, 518, 553,
+    556, 566, 787, 1062, 1091, 1111, 1143, 1542, 2060, 2210, 2232, 2249, 3788, 3816, 6152, 6450, 7629, 7783,
+    8182, 8197, 8209, 8241, 8449, 8481, 8587, 8763, 8868, 8880, 8939, 9146, 9295, 9844, 10912, 10917, 11471,
+    11813, 12005, 12289, 12560, 13153, 13156, 13301, 13653, 13685, 15009, 15018, 15157, 15242, 15562, 16379, 46,
+    53, 78, 208, 320, 410, 448, 464, 549, 612, 772, 804, 821, 938, 955, 1029, 1349, 1537, 1642, 1908, 2202, 2234,
+    3242, 3284, 3722, 3823, 4240, 4464, 6160, 6272, 6529, 6558, 6576, 7098, 7237, 8233, 8329, 8771, 8775, 8871,
+    8905, 8940, 9020, 9283, 9286, 10793, 12012, 12294, 12844, 12857, 12969, 13058, 13174, 13587, 14099, 14521,
+    14739, 14761, 14889, 15020, 15321, 15430, 15833, 16109, 16349, 82, 88, 146, 262, 291, 537, 578, 680, 776,
+    786, 807, 1032, 1074, 1117, 1160, 1574, 1607, 1635, 1654, 1894, 1907, 2124, 2182, 2204, 2440, 3084, 3225,
+    3308, 3810, 4099, 4120, 4301, 4381, 4488, 4643, 6147, 6557, 6578, 6616, 6620, 7782, 8188, 8207, 8218, 8224,
+    8465, 8603, 8833, 8928, 9249, 9824, 11873, 12305, 12337, 12545, 12565, 12577, 12853, 12897, 12901, 12977,
+    13119, 13140, 13232, 13243, 14128, 14133, 14180, 14475, 14746, 15121, 15217, 15263, 15274, 15771, 15829,
+    16177, 16356, 16372, 16382, 30, 59, 113, 197, 206, 469, 811, 820, 827, 896, 928, 954, 1041, 1057, 1136, 1216,
+    1344, 1361, 1572, 1621, 1861, 2080, 2144, 2181, 2193, 2321, 3073, 3204, 3214, 3269, 3279, 4113, 4357, 4384,
+    4404, 4420, 4497, 4922, 7236, 7492, 7509, 8579, 8600, 8712, 8729, 8866, 9138, 9319, 9827, 9833, 10915, 10985,
+    11267, 12595, 12631, 12838, 13101, 13170, 13382, 13619, 13651, 14131, 14472, 14504, 15032, 15325, 15565,
+    15827, 16125, 16312 };
+
+static int cbest_15[1023] = {
+    1, 2, 16385, 4, 8, 24577, 16, 32, 64, 28673, 128, 256, 512, 1024, 30721, 2048, 4096, 8192, 16384, 31745, 3,
+    6, 12, 24, 48, 96, 192, 384, 768, 1536, 3072, 6144, 12288, 24576, 5, 16387, 9, 16389, 10, 17, 16393, 24579,
+    28672, 18, 33, 14336, 16401, 24581, 20, 34, 65, 7168, 16417, 24585, 32257, 36, 66, 129, 3584, 16449, 24593,
+    28675, 40, 68, 130, 257, 1792, 16513, 24609, 28677, 30720, 72, 132, 258, 513, 896, 16641, 24641, 28681, 80,
+    136, 260, 448, 514, 1025, 15360, 16897, 24705, 28689, 144, 224, 264, 516, 1026, 2049, 17409, 24833, 28705,
+    30723, 112, 160, 272, 520, 1028, 2050, 4097, 7680, 18433, 25089, 28737, 30725, 56, 288, 528, 1032, 2052,
+    4098, 8193, 20481, 25601, 28801, 30729, 31744, 32513, 28, 320, 544, 1040, 2056, 3840, 4100, 8194, 26625,
+    28929, 30737, 14, 576, 1056, 2064, 4104, 8196, 16386, 29185, 30753, 7, 13, 25, 49, 97, 193, 385, 640, 769,
+    1088, 1537, 1920, 2080, 3073, 4112, 6145, 8200, 12289, 15872, 16388, 29697, 30785, 31747, 26, 50, 98, 194,
+    386, 770, 1152, 1538, 2112, 3074, 4128, 6146, 8208, 12290, 16391, 16392, 16397, 16409, 16433, 16481, 16577,
+    16769, 17153, 17921, 19457, 22529, 24578, 30849, 31749, 52, 100, 196, 388, 772, 960, 1280, 1540, 2176, 3076,
+    4160, 6148, 8224, 12292, 16400, 24580, 30977, 31753, 11, 104, 200, 392, 776, 1544, 2304, 3080, 4224, 6152,
+    7936, 8256, 12296, 16416, 24583, 24584, 24589, 24601, 24625, 24673, 24769, 24961, 25345, 26113, 27649, 31233,
+    31761, 32256, 19, 22, 208, 400, 480, 784, 1552, 2560, 3088, 4352, 6160, 8320, 12304, 14337, 16395, 16448,
+    24592, 28674, 31777, 21, 35, 38, 44, 416, 800, 1568, 3104, 4608, 6176, 7169, 8448, 12320, 14338, 16403,
+    16512, 24608, 28676, 31809, 32641, 37, 67, 70, 76, 88, 240, 832, 1600, 3136, 3585, 3968, 5120, 6208, 7170,
+    8704, 12352, 14340, 16405, 16419, 16640, 23553, 24587, 24640, 28679, 28680, 28685, 28697, 28721, 28769,
+    28865, 29057, 29441, 30209, 31873, 32259, 41, 69, 131, 134, 140, 152, 176, 1664, 1793, 3200, 3586, 6272,
+    7172, 9216, 12416, 14344, 16128, 16421, 16451, 16896, 19969, 24595, 24704, 28688, 32001, 32261, 42, 73, 120,
+    133, 259, 262, 268, 280, 304, 352, 897, 1794, 3328, 3588, 6400, 7176, 10240, 12544, 14352, 16425, 16453,
+    16515, 17408, 18177, 24597, 24611, 24832, 28704, 30722, 32265, 74, 81, 137, 261, 449, 515, 518, 524, 536,
+    560, 608, 704, 898, 1796, 1984, 3592, 6656, 7184, 12800, 14368, 15361, 16457, 16517, 16643, 17281, 18432,
+    24613, 24643, 25088, 28161, 28683, 28736, 30724, 32273, 60, 82, 138, 145, 225, 265, 450, 517, 900, 1027,
+    1030, 1036, 1048, 1072, 1120, 1216, 1408, 1800, 3600, 7200, 13312, 14400, 15362, 16465, 16521, 16645, 16833,
+    16899, 20480, 24617, 24645, 24707, 25600, 26369, 28691, 28800, 30727, 30728, 30733, 30745, 30769, 30817,
+    30913, 31105, 31489, 32289, 32512, 84, 113, 146, 161, 226, 266, 273, 452, 521, 904, 1029, 1808, 2051, 2054,
+    2060, 2072, 2096, 2144, 2240, 2432, 2816, 3616, 7232, 7681, 8064, 14464, 15364, 16529, 16609, 16649, 16901,
+    17411, 24649, 24709, 24835, 25473, 26624, 28693, 28707, 28928, 30736, 32321, 30, 57, 114, 148, 162, 228, 274,
+    289, 456, 522, 529, 912, 992, 1033, 1824, 2053, 3648, 4099, 4102, 4108, 4120, 4144, 4192, 4288, 4480, 4864,
+    5632, 7296, 7682, 14592, 15368, 16497, 16545, 16657, 16905, 17413, 18435, 24065, 24657, 24713, 24837, 25025,
+    25091, 28709, 28739, 29184, 30752, 32385, 29, 58, 116, 164, 232, 276, 290, 321, 464, 530, 545, 928, 1034,
+    1041, 1856, 2057, 3712, 3841, 4101, 7424, 7684, 8195, 8198, 8204, 8216, 8240, 8288, 8384, 8576, 8960, 9728,
+    11264, 14848, 15376, 16441, 16673, 16913, 17417, 18437, 20483, 24721, 24801, 24841, 25093, 25603, 28713,
+    28741, 28803, 29696, 30465, 30731, 30784, 31746, 32515, 15, 168, 292, 322, 532, 546, 577, 1042, 1057, 2058,
+    2065, 3842, 4105, 7688, 8197, 15392, 16390, 16396, 16408, 16413, 16432, 16480, 16576, 16705, 16768, 16929,
+    17152, 17425, 17920, 18441, 19456, 20225, 20485, 22528, 24689, 24737, 24849, 25097, 25605, 26627, 28745,
+    28805, 28931, 29569, 30739, 30848, 31748, 32517, 32705, 296, 324, 496, 548, 578, 641, 1044, 1058, 1089, 1921,
+    2066, 2081, 3844, 4032, 4106, 4113, 7696, 8201, 15424, 15873, 16256, 16399, 16961, 17441, 18449, 20489,
+    24633, 24865, 25105, 25609, 26629, 28753, 28809, 28933, 29121, 29187, 30741, 30755, 30976, 31751, 31752,
+    31757, 31769, 31793, 31841, 31937, 32129, 32521, 27, 51, 54, 99, 102, 108, 195, 198, 204, 216, 328, 387, 390,
+    396, 408, 432, 552, 580, 642, 771, 774, 780, 792, 816, 864, 1060, 1090, 1153, 1539, 1542, 1548, 1560, 1584,
+    1632, 1728, 1922, 2068, 2082, 2113, 3075, 3078, 3084, 3096, 3120, 3168, 3264, 3456, 3848, 4114, 4129, 6147,
+    6150, 6156, 6168, 6192, 6240, 6336, 6528, 6912, 7712, 8202, 8209, 12291, 12294, 12300, 12312, 12336, 12384,
+    12480, 12672, 13056, 13824, 15488, 15874, 17025, 17473, 18305, 18465, 20497, 24582, 24588, 24600, 24605,
+    24624, 24672, 24768, 24897, 24960, 25121, 25344, 25617, 26112, 26633, 27648, 28417, 28817, 28897, 28937,
+    29189, 29699, 30757, 30787, 31232, 31760, 32529, 53, 101, 197, 336, 389, 584, 644, 773, 961, 1064, 1092,
+    1154, 1281, 1541, 1924, 2084, 2114, 2177, 3077, 3856, 4116, 4130, 4161, 6149, 7744, 8210, 8225, 12293, 15616,
+    15876, 16394, 16411, 16435, 16483, 16579, 16771, 17155, 17537, 17923, 18497, 19459, 20513, 22531, 24591,
+    25153, 25633, 26641, 28785, 28833, 28945, 29193, 29701, 30761, 30789, 30851, 31776, 32545, 105, 201, 248,
+    393, 592, 648, 777, 962, 1096, 1156, 1282, 1545, 1928, 2088, 2116, 2178, 2305, 3081, 3872, 4132, 4162, 4225,
+    6153, 7808, 7937, 8212, 8226, 8257, 12297, 15880, 16402, 16437, 16485, 16581, 16773, 17157, 17345, 17665,
+    17925, 18561, 19461, 20545, 22533, 25217, 25665, 26497, 26657, 28729, 28961, 29201, 29705, 30793, 30853,
+    30979, 31617, 31755, 31808, 32577, 32640, 23, 46, 92, 106, 184, 202, 209, 368, 394, 401, 481, 656, 736, 778,
+    785, 964, 1104, 1160, 1284, 1472, 1546, 1553, 1936, 2016, 2120, 2180, 2306, 2561, 2944, 3082, 3089, 3904,
+    4136, 4164, 4226, 4353, 5888, 6154, 6161, 7938, 8228, 8258, 8321, 11776, 12298, 12305, 15888, 16404, 16418,
+    16489, 16585, 16777, 17161, 17929, 18689, 19465, 20609, 22537, 23552, 24321, 24586, 24603, 24627, 24675,
+    24771, 24963, 25347, 25729, 26115, 26689, 27651, 28678, 28684, 28696, 28701, 28720, 28768, 28864, 28993,
+    29056, 29217, 29440, 29713, 30208, 30801, 30857, 30981, 31169, 31235, 31763, 31872, 32258, 45, 78, 156, 312,
+    624, 672, 801, 1554, 2562, 14384, 16593, 16785, 17937, 24677, 31237, 31765 };
+
+static int cbest_16[1023] = {
+    1, 2, 34821, 4, 8, 52231, 16, 60934, 34820, 32, 17410, 3, 8705, 17, 34, 5, 68, 34823, 34829, 6, 136, 30467,
+    34817, 39173, 52230, 64, 272, 52229, 9, 544, 52227, 10, 1088, 12, 2176, 26115, 4352, 50311, 60935, 18, 8704,
+    45956, 60932, 20, 128, 24, 34837, 47876, 17408, 30466, 33, 36, 17411, 52239, 59974, 40, 22978, 48, 256, 8707,
+    17414, 34822, 34828, 43524, 60930, 65286, 19, 35, 8709, 17418, 23938, 26114, 34816, 34836, 34853, 39172,
+    52247, 21, 69, 15233, 21762, 30465, 34825, 52225, 52228, 7, 25, 38, 72, 137, 13057, 19586, 34831, 34881,
+    52226, 42, 65, 80, 273, 10881, 26113, 29987, 34819, 34855, 39175, 50, 66, 70, 76, 545, 9793, 11489, 45957,
+    60933, 60942, 11, 14, 84, 96, 138, 1089, 11969, 34957, 37253, 50310, 52261, 13, 152, 274, 1090, 2177, 34885,
+    34949, 35093, 39169, 50309, 52246, 52263, 49, 144, 257, 546, 4353, 8713, 32643, 32901, 34845, 35365, 38341,
+    47877, 60950, 22, 28, 140, 512, 2180, 4354, 25155, 30471, 35909, 40261, 45716, 52291, 52295, 100, 129, 160,
+    276, 2178, 8706, 17426, 26123, 39717, 49351, 52235, 59975, 44, 98, 130, 168, 548, 4360, 8708, 8721, 34833,
+    51271, 52237, 60928, 81, 132, 192, 304, 514, 1092, 15232, 30464, 30475, 34839, 34861, 39181, 43525, 45958,
+    47872, 50307, 52238, 52367, 53703, 60931, 60951, 60966, 65287, 51, 88, 102, 204, 280, 408, 816, 1632, 3264,
+    6528, 8720, 13056, 17409, 17412, 26119, 45952, 47396, 52243, 52503, 59972, 60964, 26, 37, 85, 170, 196, 288,
+    340, 552, 680, 1360, 2720, 4356, 5440, 10880, 17416, 22858, 22976, 23936, 26112, 29986, 34844, 40565, 40805,
+    52245, 52775, 54663, 41, 56, 153, 162, 200, 306, 612, 1096, 1224, 2448, 4896, 7616, 8737, 9792, 11488, 17422,
+    17440, 21760, 22979, 30483, 34849, 34852, 39189, 47044, 47878, 49895, 50855, 59494, 60454, 65284, 145, 320,
+    336, 1028, 2184, 8711, 11968, 17415, 17442, 34824, 34889, 34893, 43520, 50583, 52224, 60940, 60994, 23, 29,
+    258, 392, 560, 608, 17419, 23698, 23939, 30482, 34827, 34830, 34832, 34863, 34880, 43526, 50319, 52259,
+    56583, 60943, 64806, 46, 58, 74, 176, 260, 324, 384, 1024, 1104, 3808, 8225, 8712, 14993, 17427, 17474,
+    19584, 21763, 32642, 34818, 34838, 34854, 39174, 45964, 52257, 57574, 59970, 39, 73, 82, 92, 264, 290, 2192,
+    5744, 5984, 8769, 11429, 19587, 25154, 26131, 29985, 30227, 30470, 34869, 35077, 38933, 39205, 41604, 43532,
+    52242, 52359, 58054, 60948, 61070, 63366, 65294, 43, 52, 112, 116, 400, 2056, 4368, 8739, 12577, 16450,
+    17478, 20802, 21766, 26122, 29747, 30497, 34841, 34851, 34956, 37252, 42212, 50327, 52244, 52255, 52260,
+    60998, 61206, 65282, 67, 71, 77, 89, 178, 184, 576, 672, 1904, 8773, 10401, 10883, 11425, 11849, 13061,
+    15235, 15241, 17546, 18626, 22850, 22982, 26121, 26130, 30499, 34884, 34948, 34965, 35092, 39168, 39188,
+    42692, 45700, 45717, 45972, 47884, 50191, 50308, 52233, 52262, 59014, 60938, 15, 27, 78, 97, 139, 148, 164,
+    289, 352, 356, 1120, 1216, 2992, 8717, 8841, 9313, 13059, 13065, 17538, 17682, 19594, 23522, 30469, 30474,
+    32900, 34857, 34883, 35364, 37013, 37249, 38340, 39171, 44612, 45836, 52293, 59906, 60246, 57, 86, 232, 275,
+    640, 784, 1091, 2872, 8715, 8977, 9797, 17424, 17434, 17954, 23942, 26118, 26147, 29953, 32641, 34897, 34901,
+    34945, 34981, 35908, 37255, 38221, 39233, 40260, 49349, 51127, 52290, 52294, 59766, 59982, 60110, 60929,
+    60949, 154, 224, 321, 368, 547, 648, 712, 952, 4112, 4384, 9795, 11491, 15237, 16321, 17430, 22986, 25153,
+    26117, 26145, 28787, 29027, 29955, 32403, 32897, 34871, 34887, 34951, 38337, 39207, 39716, 40533, 45596,
+    45959, 47873, 47892, 49350, 51007, 51269, 52234, 52241, 52271, 52289, 52303, 60946, 60967, 104, 118, 141,
+    156, 259, 328, 393, 513, 516, 561, 580, 704, 768, 800, 1496, 2181, 2208, 4355, 8725, 8736, 11393, 11457,
+    11971, 19590, 21106, 21346, 22306, 22918, 29507, 30473, 30535, 34868, 34917, 34959, 35009, 35013, 35076,
+    40021, 45701, 45953, 45973, 47397, 49231, 50305, 50341, 51270, 52236, 52269, 52279, 52311, 52487, 59973,
+    60965, 30, 59, 101, 142, 161, 177, 186, 261, 277, 325, 385, 464, 520, 578, 786, 1105, 1344, 1424, 2179, 2182,
+    4362, 8710, 8723, 10885, 17420, 19170, 20130, 23946, 24675, 25635, 29991, 30603, 31683, 32647, 34835, 34840,
+    34860, 34909, 34953, 34973, 35095, 35101, 35911, 39180, 39309, 39477, 40517, 40549, 40737, 50306, 50326,
+    50343, 52254, 52277, 52366, 53702, 59910, 59990, 60962, 61062, 45, 54, 83, 93, 99, 114, 131, 134, 146, 169,
+    172, 194, 236, 265, 278, 291, 358, 476, 528, 549, 650, 736, 1094, 1122, 1436, 1572, 2048, 2193, 2240, 2432,
+    2856, 4361, 8724, 8741, 11493, 17450, 17482, 19858, 21770, 22786, 22914, 22994, 30531, 32903, 32909, 34847,
+    34913, 34964, 35089, 35367, 35373, 38343, 39183, 39237, 39719, 40535, 45988, 47045, 47879, 49827, 51267,
+    52327, 52365, 52502, 53583, 53701, 54661, 59426, 59495, 60455, 60958, 65285, 53, 113, 117, 133, 193, 234,
+    305, 308, 372, 448, 468, 515, 550, 582, 642, 716, 748, 936, 1093, 1152, 1300, 1408, 1428, 2210, 2848, 3144,
+    4369, 8224, 8722, 11153, 11459, 11841, 11973, 14992, 17446, 17448, 22798, 25163, 26127, 30481, 34877, 34983,
+    35333, 35361, 35917, 39177, 39685, 40263, 40564, 40804, 43521, 43540, 45236, 45476, 45580, 45718, 47636,
+    47893, 49893, 50183, 50371, 50567, 50991, 52251, 52299, 52325, 52363, 52501, 52774, 53575, 54662, 60452,
+    60941, 60947, 60995, 65302, 103, 166, 179, 185, 205, 281, 296, 312, 354, 370, 409, 472, 714, 740, 817, 928,
+    1164, 1432, 1480, 1568, 1633, 1872, 2244, 2600, 3265, 4358, 4364, 4386, 5712, 6288, 6529, 8768, 8833, 9729,
+    10065, 10673, 10889, 11397, 11428, 11761, 17413, 17444, 22790, 22856, 23682, 23954, 26183, 29713, 29984,
+    29995, 30123, 30226, 34848, 34859, 34896, 34900, 35905, 40257, 43527, 45116, 45572, 45712, 45828, 46016,
+    47156, 47392, 47874, 49894, 50854, 50983, 52307, 52499, 52773, 60960, 60974, 60992, 64807, 90, 149, 171, 197,
+    208, 238, 282, 341, 353, 357, 518, 553, 681, 744, 770, 1098, 1156, 1280, 1296, 1361, 1472, 1634, 2188, 2328,
+    2721, 2864, 3266, 3744, 4357, 4420, 5200, 5441, 6530, 7496, 8729, 8738, 9585, 9801, 9929, 10553, 11395,
+    11497, 12576, 14977, 15249, 17417, 21778, 22794, 22859, 22977, 23696, 23818, 23937, 26129, 26251, 29715,
+    29746, 30055, 30479, 30480, 30496, 33989, 34870, 34888, 34892, 34905, 34915, 34919, 34989, 35017, 38213,
+    39191, 39713, 40741, 45954, 45965, 45990, 46924, 47908, 49347, 50317, 50582, 50735, 50853, 52240, 52267,
+    52771, 54423, 56581, 57506, 57510, 57575, 59492, 59971, 59991, 60102, 60936, 60982, 198, 374, 1097, 1225,
+    7488, 15113, 17441, 17472, 26387, 29883, 30211, 34879, 35205, 50463, 50999, 52258, 61071 };
+
+
+static int cbest_17[1023] = {
+    1, 2, 65540, 4, 32770, 8, 16385, 16, 32, 73732, 64, 128, 36866, 256, 512, 18433, 1024, 2048, 4096, 74756,
+    8192, 16384, 37378, 32768, 3, 18689, 65536, 65541, 5, 32771, 65542, 6, 9, 18, 36, 72, 144, 288, 576, 1152,
+    2304, 4608, 9216, 18432, 98310, 10, 17, 16387, 32774, 36864, 65548, 81925, 12, 33, 16389, 32778, 49155,
+    65556, 73728, 73733, 74884, 20, 34, 65, 16393, 32786, 65572, 73734, 24, 66, 129, 16401, 32802, 36867, 65604,
+    106502, 40, 68, 130, 257, 16417, 32834, 65668, 73740, 90117, 102406, 48, 132, 258, 513, 16449, 32898, 36870,
+    37442, 65796, 73748, 80, 136, 260, 514, 1025, 16513, 18435, 33026, 36874, 53251, 66052, 73764, 83973, 96,
+    264, 516, 1026, 2049, 16641, 18437, 33282, 36882, 51203, 66564, 73796, 160, 272, 520, 1028, 2050, 4097,
+    16897, 18441, 18688, 33794, 36898, 37376, 67588, 73860, 74752, 74757, 110598, 192, 528, 1032, 2052, 4098,
+    8193, 9344, 17409, 18449, 18721, 34818, 36930, 69636, 73988, 74758, 320, 544, 1040, 2056, 4100, 4672, 8194,
+    18465, 36994, 74244, 92165, 107526, 384, 1056, 2064, 2336, 4104, 8196, 16386, 18497, 20481, 37122, 37379,
+    40962, 74764, 81924, 91141, 640, 1088, 1168, 2080, 4112, 8200, 16388, 18561, 24577, 32769, 49154, 55299,
+    74772, 75780, 102918, 584, 768, 2112, 4128, 8208, 16392, 37382, 37890, 74788, 77828, 98308, 292, 1280, 2176,
+    4160, 8224, 16400, 18945, 32772, 32784, 37386, 38914, 53763, 65537, 74820, 74900, 146, 1536, 4224, 8256,
+    16416, 18691, 19457, 32776, 37394, 49153, 65538, 65543, 65568, 84229, 90116, 111622, 7, 19, 37, 73, 145, 289,
+    577, 1153, 2305, 2560, 4352, 4609, 8320, 9217, 16448, 18693, 37410, 45058, 51459, 75012, 98306, 98311,
+    111110, 11, 38, 74, 290, 578, 1154, 2306, 3072, 4610, 8448, 9218, 16512, 18434, 18697, 22529, 32775, 32800,
+    36865, 53250, 65544, 65549, 65558, 65612, 65684, 65828, 66116, 66692, 67844, 70148, 75268, 81921, 83972,
+    93189, 106500, 13, 22, 76, 148, 580, 1156, 2308, 4612, 5120, 8704, 9220, 16640, 18436, 18705, 26625, 32779,
+    32806, 32832, 32842, 32914, 33058, 33346, 33922, 35074, 37506, 41986, 51202, 65550, 65552, 65557, 73729,
+    74880, 74885, 81927, 102404, 14, 21, 26, 35, 44, 152, 296, 1160, 2312, 4616, 6144, 9224, 16391, 16403, 16421,
+    16457, 16529, 16673, 16896, 16961, 17537, 18440, 20993, 25601, 32787, 32896, 36868, 36880, 37440, 37450,
+    37634, 65573, 73730, 73735, 73760, 74886, 76804, 92421, 98318, 114695, 25, 52, 67, 88, 304, 592, 2320, 4624,
+    9232, 10240, 16395, 17408, 18448, 18720, 18753, 32782, 32803, 33024, 36872, 49159, 53249, 55811, 65574,
+    65600, 65605, 78852, 81933, 98326, 106498, 106503, 107654, 41, 50, 69, 104, 131, 176, 608, 1184, 4640, 9248,
+    12288, 16397, 18464, 18817, 32790, 32835, 33280, 38402, 49163, 51201, 55555, 65564, 65606, 65664, 65669,
+    73736, 73741, 73750, 73804, 73876, 74020, 74308, 74892, 76036, 78340, 81941, 90113, 91269, 92164, 98342,
+    102402, 102407, 28, 42, 49, 70, 82, 100, 133, 208, 259, 352, 1216, 2368, 9280, 9360, 16405, 16419, 18496,
+    20480, 32794, 32899, 33792, 36871, 36896, 37443, 39426, 49171, 65580, 65670, 65792, 65797, 73742, 73744,
+    73749, 81957, 90119, 91140, 98374, 110596, 81, 134, 137, 164, 200, 261, 416, 515, 704, 2432, 4736, 16409,
+    16451, 18560, 19201, 24576, 32810, 32838, 33027, 34816, 36875, 36902, 36928, 36938, 37010, 37154, 38018,
+    39170, 46082, 49187, 55298, 65588, 65798, 66048, 66053, 73765, 74916, 81989, 83969, 98438, 102982, 106510,
+    112134, 122887, 97, 138, 262, 265, 274, 328, 400, 517, 832, 1027, 1408, 4680, 4864, 9472, 16425, 16453,
+    16515, 18725, 19713, 32818, 32902, 33283, 36883, 36992, 37446, 45570, 49219, 65620, 65676, 66054, 66560,
+    66565, 73766, 73792, 73797, 74948, 82053, 83975, 90125, 98566, 102414, 106518, 107524, 118791, 56, 84, 98,
+    140, 161, 266, 273, 518, 521, 530, 548, 656, 800, 1029, 1664, 2051, 2816, 9728, 16433, 16517, 16643, 18439,
+    18451, 18469, 18505, 18577, 18944, 19009, 19585, 23041, 27649, 32850, 32906, 33030, 33795, 36878, 36899,
+    37120, 37377, 40960, 49283, 53255, 53762, 53827, 65636, 65804, 66566, 67584, 67589, 73756, 73798, 73856,
+    73861, 74753, 82181, 90133, 98822, 102422, 106534, 110594, 110599, 111750, 116743, 162, 193, 268, 522, 529,
+    1030, 1033, 1042, 1060, 1096, 1312, 1600, 2053, 2340, 3328, 4099, 5632, 9345, 16465, 16521, 16645, 16899,
+    18443, 18690, 19456, 22785, 32866, 33034, 33286, 34819, 36886, 36931, 37458, 49152, 49411, 51207, 53259,
+    55297, 65700, 65812, 66060, 67590, 69632, 69637, 73772, 73862, 73984, 73989, 74754, 74759, 74784, 75140,
+    82437, 83981, 84228, 90149, 93445, 99334, 102438, 102916, 106566, 194, 276, 321, 524, 545, 1034, 1041, 2054,
+    2057, 2066, 2084, 2120, 2192, 2624, 3200, 4101, 4673, 6656, 8195, 9346, 11264, 16481, 16649, 16901, 17411,
+    18445, 18692, 18723, 26881, 32930, 33042, 33290, 33798, 36890, 36995, 37380, 37392, 37474, 37888, 49667,
+    51211, 51458, 53267, 65732, 66068, 66572, 69638, 73780, 73990, 74240, 74245, 75396, 82949, 83989, 84261,
+    90181, 92161, 93317, 100358, 102470, 106630, 107522, 107527, 111174, 112, 168, 196, 280, 322, 385, 532, 546,
+    1036, 1057, 1170, 2058, 2065, 2337, 4102, 4105, 4114, 4132, 4168, 4240, 4384, 4674, 5248, 6400, 8197, 9348,
+    13312, 16545, 16657, 16905, 17413, 18453, 18467, 18696, 22528, 32962, 33298, 33802, 34822, 36906, 36934,
+    37123, 37384, 38912, 40963, 42114, 50179, 51219, 51491, 53283, 53761, 65860, 66084, 66580, 67596, 70212,
+    73812, 73868, 74246, 74760, 74765, 74774, 74828, 75044, 75332, 77060, 79364, 81920, 84005, 90245, 91137,
+    92167, 93188, 102534, 106758, 110606, 126983, 324, 386, 536, 641, 1044, 1058, 1089, 1169, 2060, 2081, 2338,
+    4106, 4113, 4676, 8198, 8201, 8210, 8228, 8264, 8336, 8480, 8768, 9352, 10496, 12800, 16577, 16913, 17417,
+    18457, 18499, 18704, 18729, 20483, 25729, 26624, 33090, 33314, 33810, 34826, 36914, 36998, 37570, 51235,
+    53315, 56067, 65924, 66596, 67604, 67876, 69644, 73828, 73996, 74766, 74768, 74773, 75776, 75781, 76932,
+    81926, 84037, 86021, 90373, 91143, 102662, 102914, 102919, 107014, 110614, 111620, 124935, 388, 552, 585,
+    642, 769, 1048, 1090, 2068, 2082, 2113, 4108, 4129, 8202, 8209, 16390, 16402, 16420, 16456, 16528, 16672,
+    16705, 16929, 16960, 17425, 17536, 18473, 18501, 18563, 18737, 20485, 20992, 21057, 24579, 25600, 32912,
+    33154, 33826, 34834, 35106, 36946, 37002, 37126, 37383, 37408, 37698, 37891, 40966, 45056, 51267, 51457,
+    53379, 65824, 66180, 66628, 66708, 67620, 69652, 73892, 74004, 74252, 74789, 74902, 75782, 77824, 77829,
+    78980, 84101, 90629, 92173, 92420, 98304, 98309, 107534, 110630, 111108, 114694, 120839, 123911, 392, 644,
+    770, 1281, 2072, 2114, 2177, 4116, 4130, 4161, 8204, 8225, 16769, 17441, 18565, 24581, 33410, 33938, 34850,
+    36962, 37130, 38530, 38915, 40970, 46594, 49158, 53248, 55303, 55810, 69668, 73924, 74260, 74790, 74821,
+    74896, 74901, 77830, 91149, 92181, 92453, 107542, 110662 };
+
+static int cbest_18[1023] = {
+    1, 2, 131136, 4, 65568, 8, 32784, 16, 16392, 32, 8196, 64, 4098, 128, 2049, 256, 512, 132160, 1024, 2048,
+    66080, 4096, 33040, 8192, 16520, 8260, 16384, 3, 4130, 32768, 131137, 5, 65569, 131138, 6, 9, 2065, 32785,
+    65536, 65570, 131140, 196704, 10, 17, 16393, 32786, 65572, 131144, 163920, 12, 18, 33, 8197, 16394, 32788,
+    65576, 98352, 131072, 131152, 147528, 20, 34, 65, 4099, 8198, 16396, 32792, 65584, 81960, 131168, 132168,
+    139332, 24, 36, 66, 129, 258, 516, 1032, 2064, 49176, 73764, 135234, 40, 68, 130, 257, 2051, 4102, 4128,
+    8204, 16408, 32816, 40980, 65632, 69666, 131264, 133185, 48, 72, 132, 513, 2053, 4106, 8212, 8256, 16424,
+    24588, 32848, 36882, 65696, 66084, 67617, 131392, 132161, 80, 136, 260, 514, 1025, 2057, 4114, 8228, 16456,
+    16512, 20490, 32912, 34833, 65824, 131648, 132162, 96, 144, 264, 1026, 12294, 18441, 33024, 66081, 132164,
+    197728, 160, 272, 520, 1028, 2050, 2081, 4162, 8324, 10245, 16648, 33042, 33296, 66048, 66082, 66592, 133184,
+    164944, 197216, 192, 288, 528, 2052, 2113, 4097, 4226, 6147, 8452, 16904, 33041, 33808, 67616, 132096,
+    132176, 148552, 320, 544, 1040, 2056, 2177, 4354, 8708, 17416, 34832, 66088, 98864, 132192, 135232, 140356,
+    164176, 384, 576, 1056, 2305, 4100, 4610, 8193, 9220, 16521, 18440, 33044, 66096, 69664, 82472, 98608,
+    136258, 640, 1088, 2080, 2561, 4104, 5122, 8194, 10244, 16522, 33048, 36880, 74276, 132288, 134209, 139268,
+    139328, 147656, 768, 1152, 2112, 3073, 4112, 6146, 8261, 16385, 16524, 20488, 49432, 66144, 69634, 70178,
+    73760, 82088, 132416, 1280, 2176, 8200, 8262, 12292, 16386, 33072, 34817, 40976, 41236, 49304, 66208, 68129,
+    132672, 147520, 1536, 2304, 4131, 4160, 4352, 8208, 16388, 16536, 24584, 32769, 33104, 37138, 66336, 73828,
+    81952, 2560, 4224, 6145, 8224, 8268, 8704, 16552, 24716, 32770, 33168, 35089, 41044, 49168, 131139, 134208,
+    135266, 148544, 163904, 198240, 7, 3072, 4134, 8276, 12290, 16400, 16584, 17408, 20618, 24652, 32772, 65537,
+    65571, 67104, 98336, 131141, 196705, 11, 2067, 4138, 4608, 8292, 8320, 10241, 16416, 18569, 24580, 32776,
+    32787, 33552, 34816, 36914, 65538, 65573, 68128, 74272, 131142, 131145, 133201, 136256, 163921, 165200,
+    196672, 196706, 13, 19, 2069, 4146, 5120, 8448, 12358, 16395, 16448, 16776, 20482, 20522, 32789, 34064,
+    49160, 65540, 65574, 65577, 67633, 98353, 131073, 131146, 131153, 147529, 163922, 196708, 14, 21, 35, 2073,
+    6144, 8199, 8388, 10309, 12326, 16397, 17032, 18433, 32790, 32793, 32800, 35088, 37136, 40964, 65544, 65578,
+    65585, 69632, 70176, 81961, 98320, 98354, 99120, 131074, 131148, 131154, 131169, 132169, 139333, 140292,
+    140352, 147530, 148680, 163924, 196712, 229488, 22, 25, 37, 67, 259, 517, 1033, 4194, 8516, 9216, 16398,
+    16640, 17544, 18457, 32794, 32832, 36866, 49177, 65552, 65580, 65586, 73765, 81928, 81962, 98356, 131076,
+    131156, 131170, 132170, 135235, 139334, 147532, 163928, 196640, 196720, 213096, 26, 38, 41, 69, 131, 518,
+    1034, 2066, 2097, 4103, 4129, 4258, 6179, 8205, 8772, 10240, 10261, 16409, 16896, 18568, 32796, 32817, 32896,
+    40981, 49178, 65588, 65633, 69667, 70146, 73732, 73766, 81964, 82600, 98360, 131080, 131160, 131172, 131265,
+    131394, 131652, 132172, 133200, 139264, 163856, 180312, 197736, 204900, 28, 42, 49, 70, 73, 133, 262, 1036,
+    2068, 2129, 4107, 4386, 6163, 8206, 8213, 8257, 9284, 16410, 16425, 24589, 32818, 32849, 36883, 40982, 49180,
+    65592, 65600, 65634, 65697, 65826, 66085, 66600, 67632, 114744, 131088, 131176, 131266, 131393, 133187,
+    135238, 135264, 139340, 147464, 147544, 163952, 164952, 172116, 200802, 44, 50, 74, 81, 134, 137, 261, 266,
+    515, 524, 2055, 2072, 2193, 4115, 4132, 4642, 8214, 8229, 8258, 10308, 12288, 16412, 16426, 16457, 16513,
+    18432, 20491, 20616, 24590, 32820, 32850, 32913, 33026, 33280, 33300, 33816, 35073, 41232, 49560, 65636,
+    65664, 65698, 65825, 66052, 66086, 67585, 67619, 69670, 73772, 74340, 81976, 82464, 106548, 131104, 131184,
+    131268, 131649, 132104, 132163, 132184, 133189, 135242, 136290, 139348, 147560, 155724, 164928, 168018,
+    196832, 197220, 198753, 52, 76, 82, 97, 138, 145, 265, 274, 532, 1027, 1048, 2059, 2321, 4110, 4136, 5154,
+    8230, 12295, 16428, 16458, 16514, 16650, 16908, 18456, 32824, 32852, 32914, 33025, 33792, 34835, 36886,
+    36912, 40988, 65640, 65700, 65792, 67621, 69674, 73780, 73824, 90156, 98416, 102450, 131272, 131396, 131650,
+    132165, 132200, 133193, 135170, 135250, 139364, 140364, 147648, 151626, 164048, 165969, 196960, 197729, 56,
+    84, 98, 140, 146, 161, 273, 290, 521, 548, 1029, 1064, 2061, 2096, 2577, 4118, 4144, 4163, 6178, 8220, 8264,
+    8325, 8454, 9228, 10260, 12356, 16460, 16516, 16649, 18443, 20480, 20494, 20520, 24712, 32856, 32916, 33043,
+    33297, 34837, 36890, 41040, 41300, 49208, 49424, 57372, 65648, 65704, 65828, 66049, 66083, 66092, 66593,
+    67625, 69682, 82024, 82080, 86058, 98480, 98848, 98868, 100401, 131200, 131280, 131400, 132166, 133121,
+    134225, 136266, 143430, 149577, 164160, 164945, 197217, 197696, 197730, 88, 100, 148, 162, 193, 268, 289,
+    322, 522, 529, 580, 1030, 1096, 2083, 2128, 3089, 4122, 4227, 4614, 5130, 6162, 8236, 8272, 8326, 8453,
+    10247, 12324, 16440, 16905, 18445, 24604, 24648, 32920, 33028, 33298, 33809, 34841, 41012, 49240, 49296,
+    53274, 65712, 65832, 66050, 66100, 66560, 66594, 77862, 82476, 84009, 98592, 131296, 131328, 131408, 131656,
+    132097, 132177, 132296, 133186, 133217, 134217, 139460, 141381, 147784, 148553, 148672, 164178, 164432,
+    164946, 197184, 197218, 197732, 104, 152, 164, 194, 276, 321, 386, 530, 545, 644, 1041, 1160, 2054, 2085,
+    2115, 2192, 2307, 2565, 3081, 4166, 4192, 4355, 4384, 8244, 8288, 8709, 8768, 12302, 16472, 16528, 16652,
+    16906, 17417, 17536, 20506, 24576, 24620, 24780, 32880, 33032, 33046, 33810, 35072, 36864, 37170, 45078,
+    51225, 65840, 66089, 66596, 67584, 67618, 68145, 69730, 73892, 75813, 82216, 98610, 98865, 131424, 131584,
+    131664, 132098, 132178, 132193, 132424, 133188, 135233, 135362, 137283, 139588, 140357, 148040, 148554,
+    164177, 164948, 198752, 230512, 112, 168, 196, 280, 292, 385, 546, 577, 772, 1042, 1057, 1288, 2058, 2089,
+    2117, 2179, 2320, 4101, 4170, 4230, 4256, 4611, 6151, 6177, 8332, 8710, 9221, 10253, 12310, 12354, 16488,
+    16544, 17418, 24708, 28686, 32944, 33045, 33050, 33304, 33812, 34834, 34865, 36946, 41108, 43029, 49416,
+    65760, 66056, 66090, 66097, 66148, 67620, 67681, 69665, 69794, 70144, 70182, 71715, 74020, 82473, 98609,
+    98832, 98866, 99376, 131680, 132100, 132180, 132194, 132680, 133192, 133313, 135490, 136259, 139844, 140358,
+    148556, 165968, 197224, 197664, 197744, 214120, 230000, 176, 200, 296, 324, 536, 641, 770, 1044, 1058, 1089,
+    1544, 2060, 2121, 2181, 4105, 4178, 4234, 4358, 8460, 9222, 10305, 16576, 17420, 18442, 18473, 20554, 20610,
+    32976, 33049, 33056, 34836, 34897, 38931, 41220, 65888, 66098, 66608, 67624, 67745, 68133, 74277, 74336,
+    82440, 82474, 131520, 132196, 132418, 133120, 133441, 134224, 135746, 164880, 181336, 197232, 205924, 229744 };
+
+
+static int cbest_19[1023] = {
+    1, 2, 262163, 4, 393242, 8, 196621, 16, 32, 360469, 64, 262162, 128, 131081, 3, 442393, 262161, 6, 256,
+    393243, 5, 327703, 12, 196620, 512, 393240, 9, 24, 98310, 262167, 426008, 10, 458782, 48, 1024, 49155,
+    196617, 17, 213004, 262171, 393234, 483359, 18, 96, 262147, 360471, 393246, 20, 2048, 16385, 196623, 286738,
+    360468, 442392, 33, 192, 32770, 106502, 229391, 34, 65540, 196613, 270355, 360465, 36, 384, 4096, 131080,
+    143369, 180234, 393226, 40, 65, 53251, 221196, 262195, 66, 768, 376852, 397338, 442395, 68, 8192, 24577,
+    49154, 90117, 503836, 72, 129, 1536, 262160, 262227, 80, 110598, 198669, 288786, 393274, 132, 3072, 16384,
+    98308, 188426, 196637, 274451, 327702, 333847, 483358, 7, 130, 136, 257, 131083, 262291, 307217, 144, 6144,
+    49153, 163851, 213005, 262165, 286739, 327699, 360477, 393241, 393306, 426010, 13, 160, 55299, 131073,
+    144393, 196616, 196653, 262166, 327701, 360453, 361493, 426009, 14, 26, 258, 264, 513, 12288, 53250, 94213,
+    131085, 196609, 262419, 399386, 442385, 458783, 25, 52, 272, 26625, 98306, 98311, 251918, 344086, 360467,
+    393370, 429080, 442397, 11, 104, 288, 24576, 32768, 90116, 106500, 196619, 196622, 196685, 229389, 262155,
+    262170, 262175, 311312, 368661, 393218, 393235, 393238, 393244, 405530, 458778, 22, 28, 49, 208, 260, 320,
+    514, 1025, 45058, 155656, 180235, 229390, 241679, 262146, 262169, 262675, 360470, 376853, 393232, 393247,
+    442394, 458780, 44, 416, 528, 22529, 77828, 172043, 180232, 196612, 199693, 213000, 221197, 262145, 262179,
+    289810, 360501, 393498, 415771, 442905, 483355, 491548, 19, 88, 97, 544, 832, 38914, 53249, 143368, 196749,
+    275475, 309265, 442377, 475167, 483357, 21, 38, 50, 56, 176, 516, 576, 1026, 1664, 2049, 19457, 71684,
+    114695, 131097, 135177, 202765, 214540, 263187, 270354, 288787, 334359, 360464, 426000, 76, 193, 352, 640,
+    3328, 32771, 35842, 49152, 106498, 106503, 139273, 213006, 229387, 262151, 278546, 286736, 327711, 352278,
+    360533, 393227, 393754, 426012, 446489, 458774, 35, 98, 152, 194, 704, 1056, 6656, 17921, 55298, 65536,
+    65541, 196629, 196877, 245774, 262194, 262259, 273427, 294929, 319504, 327687, 348182, 376854, 393224,
+    393258, 450585, 37, 42, 70, 112, 304, 385, 520, 1028, 1088, 1408, 2050, 4097, 13312, 16387, 49159, 94212,
+    110596, 125959, 131113, 144905, 188427, 196615, 212996, 262193, 264211, 270353, 315408, 329751, 360473,
+    362005, 372757, 382996, 397339, 483351, 503838, 41, 140, 608, 1152, 2816, 26624, 27649, 98318, 159752,
+    188424, 198668, 221192, 262355, 271891, 331799, 360597, 394266, 399898, 442425, 499740, 503837, 67, 100, 280,
+    388, 769, 1216, 1280, 5632, 47106, 65542, 98304, 99334, 107270, 157704, 176139, 196633, 196636, 197133,
+    262226, 363541, 376848, 393230, 406554, 409627, 425992, 427032, 442384, 69, 74, 84, 224, 386, 560, 1032,
+    2052, 2112, 2432, 4098, 8193, 11264, 16389, 49163, 49667, 79876, 90113, 122887, 131082, 131145, 143371,
+    163849, 174091, 229383, 262199, 262225, 262547, 266259, 271123, 286742, 344087, 360479, 393275, 393338,
+    397336, 428056, 429336, 442396, 458766, 470046, 483615, 503832, 73, 196, 1120, 1537, 2176, 4864, 22528,
+    23553, 32774, 55297, 78852, 81925, 98326, 163850, 213516, 221198, 262203, 274450, 307219, 311313, 327735,
+    333846, 360455, 360725, 393266, 393272, 395290, 398874, 416795, 442399, 442457, 460830, 81, 134, 770, 776,
+    2240, 2304, 9728, 39938, 53248, 110594, 110599, 131072, 137225, 143361, 144392, 180226, 196649, 196652,
+    196669, 197645, 198665, 214028, 251919, 262290, 262931, 270359, 286994, 303121, 307216, 327697, 356374,
+    360449, 393434, 434200, 442387, 483343, 133, 148, 168, 448, 1040, 2056, 2560, 3073, 4100, 4480, 8194, 16393,
+    16897, 19456, 24579, 39426, 49171, 90119, 98309, 106758, 114694, 131084, 131209, 143373, 180238, 191498,
+    196608, 199949, 221188, 249870, 251916, 262164, 262211, 262231, 275987, 286746, 288784, 289811, 323600,
+    327698, 333843, 360461, 360476, 361495, 393307, 398106, 415770, 426011, 442904, 443161, 448537, 466974,
+    483354, 485407, 131, 137, 200, 1538, 4224, 8960, 17409, 19969, 32778, 53255, 53635, 57347, 72196, 98342,
+    106510, 107014, 131077, 143497, 153608, 155657, 196639, 196717, 203277, 213020, 217100, 262235, 263699,
+    270611, 274449, 286722, 325136, 327700, 327767, 333845, 350230, 360452, 360981, 361492, 393278, 393298,
+    393304, 393626, 397330, 426040, 442376, 442521, 475166, 483356, 487455, 82, 138, 145, 268, 772, 1552, 4352,
+    6145, 17920, 18433, 19713, 33794, 45056, 53379, 65548, 106496, 166923, 180233, 196618, 196645, 196681,
+    196684, 198671, 213001, 229385, 229388, 230415, 241677, 262289, 262418, 270363, 270867, 317456, 334615,
+    349206, 360485, 397342, 397722, 399387, 417819, 429082, 442369, 442389, 443929, 458814, 503828, 146, 161,
+    296, 336, 392, 896, 2064, 3074, 4104, 4608, 8196, 16386, 16401, 20481, 24581, 34818, 36098, 49158, 49187,
+    53507, 76804, 108550, 125958, 131087, 131089, 131337, 161800, 172041, 180746, 196813, 199437, 214668, 221452,
+    241678, 262153, 262275, 262295, 265235, 270339, 271379, 273939, 278547, 286737, 290834, 311314, 327707,
+    330775, 352279, 360466, 360503, 361489, 368663, 393216, 393371, 394010, 397466, 413723, 429081, 446488,
+    458770, 458776, 15, 27, 54, 108, 162, 216, 259, 265, 432, 864, 1540, 1728, 3456, 5120, 6912, 12289, 13824,
+    27648, 32786, 36866, 38912, 49157, 53259, 67588, 94209, 98374, 106518, 131075, 172042, 178187, 196655,
+    198661, 199692, 213036, 214541, 229407, 233487, 262154, 262174, 262299, 272403, 319505, 327831, 348183,
+    360497, 368660, 376855, 393219, 393239, 393245, 393290, 393310, 393362, 397594, 401434, 405531, 426014,
+    426072, 442379, 442649, 450584, 458779, 483391, 503964, 514077, 53, 266, 273, 536, 3104, 6146, 8448, 18049,
+    24833, 38402, 40962, 54275, 65556, 69636, 86021, 90373, 98307, 114693, 124935, 145417, 158728, 188418,
+    196611, 196677, 196745, 196748, 197005, 198733, 199053, 200717, 207885, 212992, 213007, 235023, 237583,
+    251914, 262168, 262173, 262417, 262674, 268307, 288790, 288850, 315409, 339991, 344082, 376860, 377364,
+    382997, 393233, 393236, 394778, 397850, 399384, 426002, 442907, 458781, 458846, 483347, 483350, 483353,
+    491550, 30, 105, 262, 274, 289, 400, 592, 672, 1792, 2080, 3076, 4112, 8200, 8704, 16388, 16417, 24585,
+    32769, 35840, 49162, 49219, 49666, 73732, 80900, 90112, 90125, 95749, 98314, 99846, 106501, 110726, 122886,
+    131096, 131593, 135176, 143385, 144395, 175115, 180250, 184330, 188430, 198797, 202764, 223244, 245775,
+    262144, 262149, 262178, 262183, 262323, 262403, 272147, 274455, 286770, 288914, 309267, 333911, 344084,
+    360500, 360535, 360565, 362133, 368657, 376836, 388116, 393368, 393499, 397322, 398362, 400154, 407066,
+    427544, 438296, 442424, 491549, 23, 29, 46, 92, 106, 184, 209, 261, 276, 290, 321, 368, 515, 736, 1472, 1544,
+    2944, 5888, 9216, 11776, 12290, 19201, 23552, 32802, 45059, 53267, 55296, 81924, 94215, 98316, 98438, 106534,
+    139272, 163843, 174603, 196687, 197389, 198861, 198925, 212997, 213002, 213068, 221212, 225292, 229386,
+    229423, 241675, 245772, 262427, 272019, 274579, 275474, 288978, 305169, 307221, 309264, 327959, 345622,
+    360529, 362517, 363797, 376849, 378900, 393354, 393374, 393490, 396314, 405528, 409626, 426136, 436248,
+    461854, 470558, 471070, 483423, 503820, 504860, 417, 529, 1072, 6148, 10240, 92165, 101382, 125957, 144425,
+    147464, 196741, 204813, 262159, 262339, 262673, 263186, 286743, 288794, 307345, 327683, 425984, 426001,
+    432152, 442409, 458910, 505884 };
+
+static int cbest_20[1023] = {
+    1, 2, 524292, 4, 262146, 8, 131073, 16, 32, 589828, 64, 128, 294914, 256, 512, 147457, 1024, 2048, 4096,
+    598020, 8192, 16384, 32768, 299010, 65536, 131072, 149505, 262144, 3, 524288, 524293, 5, 262147, 524294,
+    599044, 6, 9, 18, 36, 72, 144, 288, 576, 1152, 2304, 4608, 9216, 18432, 36864, 73728, 147456, 786438, 10, 17,
+    131075, 262150, 294912, 524300, 655365, 12, 33, 131077, 262154, 393219, 524308, 589824, 589829, 20, 34, 65,
+    131081, 262162, 299522, 524324, 589830, 24, 66, 129, 131089, 262178, 294915, 524356, 851974, 40, 68, 130,
+    257, 131105, 262210, 524420, 589836, 720901, 819206, 48, 132, 258, 513, 131137, 262274, 294918, 524548,
+    589844, 80, 136, 260, 514, 1025, 131201, 147459, 149761, 262402, 294922, 425987, 524804, 589860, 671749, 96,
+    264, 516, 1026, 2049, 131329, 147461, 262658, 294930, 409603, 525316, 589892, 160, 272, 520, 1028, 2050,
+    4097, 131585, 147465, 149504, 263170, 294946, 299008, 526340, 589956, 598016, 598021, 884742, 192, 528, 1032,
+    2052, 4098, 8193, 74752, 132097, 147473, 264194, 294978, 528388, 590084, 598022, 320, 544, 1040, 2056, 4100,
+    8194, 16385, 37376, 133121, 147489, 266242, 295042, 532484, 590340, 737285, 860166, 384, 1056, 2064, 4104,
+    8196, 16386, 18688, 32769, 135169, 147521, 270338, 295170, 299011, 540676, 590852, 598028, 599172, 729093,
+    640, 1088, 2080, 4112, 8200, 9344, 16388, 32770, 65537, 139265, 147585, 278530, 295426, 442371, 557060,
+    591876, 598036, 823302, 768, 2112, 4128, 4672, 8208, 16392, 32772, 65538, 147713, 295938, 299014, 593924,
+    598052, 1280, 2176, 2336, 4160, 8224, 16400, 32776, 65540, 131074, 147969, 163841, 296962, 299018, 327682,
+    430083, 598084, 655364, 1168, 1536, 4224, 8256, 16416, 32784, 65544, 131076, 148481, 149507, 196609, 262145,
+    299026, 393218, 598148, 606212, 673797, 892934, 584, 2560, 4352, 8320, 16448, 32800, 65552, 131080, 149509,
+    299042, 299586, 303106, 411651, 598276, 622596, 786436, 888838, 292, 3072, 8448, 16512, 32832, 65568, 131088,
+    149513, 151553, 262148, 262160, 299074, 311298, 524289, 598532, 745477, 146, 5120, 8704, 16640, 32896, 65600,
+    131104, 149521, 155649, 262152, 299138, 393217, 524290, 524295, 524320, 599040, 599045, 720900, 7, 19, 37,
+    73, 145, 289, 577, 1153, 2305, 4609, 6144, 9217, 16896, 18433, 33024, 36865, 65664, 73729, 131136, 149537,
+    299266, 299520, 360450, 599046, 600068, 739333, 786434, 786439, 11, 38, 74, 290, 578, 1154, 2306, 4610, 9218,
+    10240, 17408, 18434, 33280, 36866, 65792, 73730, 131200, 147458, 149569, 149760, 180225, 262151, 262176,
+    294913, 425986, 446467, 524296, 524301, 524310, 524364, 524436, 524580, 524868, 525444, 526596, 528900,
+    533508, 542724, 561156, 602116, 655361, 671748, 851972, 861190, 13, 22, 76, 148, 580, 1156, 2308, 4612, 9220,
+    12288, 18436, 33792, 36868, 66048, 73732, 131328, 147460, 149633, 149793, 212993, 262155, 262182, 262208,
+    262218, 262290, 262434, 262722, 263298, 264450, 266754, 271362, 280578, 300034, 335874, 409602, 444419,
+    524302, 524304, 524309, 589825, 599052, 655367, 730117, 819204, 14, 21, 26, 35, 44, 152, 296, 1160, 2312,
+    4616, 9224, 18440, 20480, 34816, 36872, 66560, 73736, 74880, 131079, 131091, 131109, 131145, 131217, 131361,
+    131584, 131649, 132225, 133377, 135681, 140289, 147464, 167937, 204801, 262163, 262272, 294916, 294928,
+    299523, 301058, 524325, 589826, 589831, 589856, 599060, 614404, 786446, 917511, 25, 52, 67, 88, 304, 592,
+    2320, 4624, 9232, 18448, 24576, 36880, 67584, 73744, 131083, 132096, 147472, 150017, 262158, 262179, 262400,
+    294920, 393223, 425985, 524326, 524352, 524357, 599076, 630788, 655373, 786454, 823814, 851970, 851975,
+    897030, 41, 50, 69, 104, 131, 176, 608, 1184, 4640, 9248, 18464, 36896, 37440, 40960, 69632, 73760, 131085,
+    133120, 147488, 150529, 262166, 262211, 262656, 299526, 307202, 393227, 409601, 524316, 524358, 524416,
+    524421, 589832, 589837, 589846, 589900, 589972, 590116, 590404, 590980, 592132, 594436, 599108, 608260,
+    626692, 655381, 720897, 737284, 786470, 819202, 819207, 28, 42, 49, 70, 82, 100, 133, 208, 259, 352, 1216,
+    2368, 9280, 18496, 36928, 49152, 73792, 131093, 131107, 135168, 147520, 262170, 262275, 263168, 294919,
+    294944, 299530, 315394, 393235, 430595, 524332, 524422, 524544, 524549, 589838, 589840, 589845, 655397,
+    720903, 729092, 786502, 884740, 893958, 81, 134, 137, 164, 200, 261, 416, 515, 704, 2432, 4736, 18560, 18720,
+    36992, 73856, 81920, 131097, 131139, 139264, 147584, 153601, 262186, 262214, 262403, 264192, 294923, 294950,
+    294976, 294986, 295058, 295202, 295490, 296066, 297218, 299538, 304130, 313346, 368642, 393251, 442370,
+    524340, 524550, 524800, 524805, 589861, 599300, 655429, 671745, 747525, 786566, 851982, 983047, 97, 138, 262,
+    265, 274, 328, 400, 517, 832, 1027, 1408, 4864, 9472, 37120, 73984, 98304, 131113, 131141, 131203, 147712,
+    149763, 157697, 262194, 262278, 262659, 266240, 294931, 295040, 299554, 364546, 393283, 524372, 524428,
+    524806, 525312, 525317, 589862, 589888, 589893, 599188, 599556, 655493, 671751, 674053, 720909, 746501,
+    786694, 819214, 851990, 860164, 889350, 950279, 56, 84, 98, 140, 161, 266, 273, 518, 521, 530, 548, 656, 800,
+    1029, 1664, 2051, 2816, 9360, 9728, 18944, 74240, 131121, 131205, 131331, 147463, 147475, 147493, 147529,
+    147601, 147745, 147968, 148033, 148609, 149765, 152065, 156673, 163840, 184321, 221185, 262226, 262282,
+    262406, 263171, 270336, 294926, 294947, 295168, 299009, 393347, 411907, 425991, 430082, 524388, 524556,
+    525318, 526336, 526341, 589852, 589894, 589952, 589957, 598017, 655621, 720917, 786950, 819222, 852006,
+    884738, 884743, 933895, 162, 193, 268, 522, 529, 1030, 1033, 1042, 1060, 1096, 1312, 1600, 2053, 3328, 4099,
+    5632, 19456, 37888, 74753, 131153, 131209, 131333, 131587, 147467, 148480, 149506, 149769, 182273, 196608,
+    262242, 262410, 262662, 264195, 278528, 294934, 294979, 295424, 299650, 393475, 409607, 425995, 442369,
+    448515, 524452, 524564, 524812, 526342, 528384, 528389, 589868, 589958, 590080, 590085, 598018, 598023,
+    598048, 601092, 655877, 671757, 673796, 720933, 787462, 819238, 823300, 852038, 194, 276, 321, 524, 545,
+    1034, 1041, 2054, 2057, 2066, 2084, 2120, 2192, 2624, 3200, 4101, 4680, 6656, 8195, 11264, 37377, 38912,
+    74754, 75776, 131169, 131337, 131589, 132099, 147469, 149508, 149777, 215041, 262306, 262418, 262666, 263174,
+    266243, 294938, 295043, 295936, 299012, 299024, 299778, 393731, 409611, 411650, 426003, 524484, 524820,
+    525324, 528390, 532480, 532485, 589876, 590086, 590336, 590341, 603140, 656389, 671765, 720965, 737281,
+    788486, 819270, 852102, 860162, 860167, 112, 168, 196, 280, 322, 385, 532, 546, 1036, 1057, 2058, 2065, 4102,
+    4105, 4114, 4132, 4168, 4240, 4384, 5248, 6400, 8197, 13312, 16387, 18689, 22528, 37378, 74756, 77824,
+    131233, 131345, 131593, 132101, 133123, 147477, 147491, 149512, 151552, 262338, 262674, 263178, 264198,
+    270339, 294954, 294982, 295171, 296960, 299016, 327680, 336898, 394243, 409619, 426019, 430081, 446979,
+    524612, 524836, 525332, 526348, 532486, 540672, 540677, 561668, 589908, 589964, 590342, 590848, 590853,
+    598024, 598029, 598038, 598092, 598164, 598308, 598596, 599168, 599173, 600324, 602628, 616452, 634884,
+    657413, 671781, 721029, 729089, 737287, 739589, 745476, 790534, 819334, 852230, 884750, 1015815, 386, 1089,
+    4106, 8228, 8264, 8336, 10496, 131601, 147481, 147523, 149825, 155648, 262466, 263186, 295046, 300546,
+    393216, 426051, 590092, 599174, 615428, 729095, 823303 };
+
+static int cbest_21[1023] = {
+    1, 2, 1048578, 4, 524289, 8, 16, 1310722, 32, 64, 655361, 128, 256, 512, 1376258, 1024, 2048, 4096, 688129,
+    8192, 16384, 32768, 65536, 1392642, 131072, 262144, 524288, 696321, 1048576, 3, 1048579, 5, 10, 20, 40, 80,
+    160, 320, 640, 1280, 2560, 5120, 10240, 20480, 40960, 81920, 163840, 327680, 655360, 6, 9, 524291, 1048582,
+    1310720, 1572867, 17, 524293, 1048586, 1310723, 1396738, 12, 18, 33, 524297, 1048594, 34, 65, 524305,
+    1048610, 1310726, 1835011, 24, 36, 66, 129, 524321, 655363, 1048642, 1310730, 1703939, 68, 130, 257, 524353,
+    655365, 688128, 1048706, 1310738, 1376256, 48, 72, 132, 258, 513, 344064, 524417, 655369, 698369, 1048834,
+    1310754, 1376259, 136, 260, 514, 1025, 172032, 524545, 655377, 1049090, 1310786, 1966083, 96, 144, 264, 516,
+    1026, 2049, 86016, 524801, 655393, 1049602, 1310850, 1376262, 1900547, 272, 520, 1028, 2050, 4097, 43008,
+    525313, 655425, 1050626, 1310978, 1376266, 192, 288, 528, 1032, 2052, 4098, 8193, 21504, 526337, 655489,
+    688131, 1052674, 1311234, 1376274, 1736707, 544, 1040, 2056, 4100, 8194, 10752, 16385, 528385, 655617,
+    688133, 1056770, 1311746, 1376290, 384, 576, 1056, 2064, 4104, 5376, 8196, 16386, 32769, 532481, 655873,
+    688137, 1064962, 1312770, 1376322, 1392640, 1397762, 2031619, 1088, 2080, 2688, 4112, 8200, 16388, 32770,
+    65537, 540673, 656385, 688145, 696320, 1081346, 1314818, 1376386, 1392643, 1998851, 768, 1152, 1344, 2112,
+    4128, 8208, 16392, 32772, 65538, 131073, 557057, 657409, 688161, 1114114, 1318914, 1376514, 672, 2176, 4160,
+    8224, 16400, 32776, 65540, 131074, 262145, 348160, 589825, 659457, 688193, 1179650, 1327106, 1376770,
+    1392646, 1916931, 336, 1536, 2304, 4224, 8256, 16416, 32784, 65544, 131076, 262146, 663553, 688257, 1343490,
+    1377282, 1392650, 168, 4352, 8320, 16448, 32800, 65552, 131080, 174080, 262148, 524290, 671745, 688385,
+    786433, 1378306, 1392658, 1572866, 84, 3072, 4608, 8448, 16512, 32832, 65568, 131088, 262152, 524292, 688641,
+    696323, 698881, 1048577, 1380354, 1392674, 1441794, 1744899, 2064387, 42, 8704, 16640, 32896, 65600, 87040,
+    131104, 262160, 524296, 689153, 696325, 720897, 1048584, 1384450, 1392706, 2048003, 11, 21, 41, 81, 161, 321,
+    641, 1281, 2561, 5121, 6144, 9216, 10241, 16896, 20481, 33024, 40961, 65664, 81921, 131136, 163841, 262176,
+    327681, 524304, 690177, 696329, 1048580, 1392770, 1572865, 1835010, 7, 22, 82, 162, 322, 642, 1282, 2562,
+    5122, 10242, 17408, 20482, 33280, 40962, 43520, 65792, 81922, 131200, 163842, 262208, 327682, 524320, 655362,
+    692225, 696337, 917505, 1048583, 1048598, 1048618, 1048658, 1048738, 1048898, 1049218, 1049858, 1051138,
+    1053698, 1058818, 1069058, 1089538, 1130498, 1212418, 1310721, 1392898, 1396736, 1409026, 1703938, 2007043,
+    14, 44, 164, 324, 644, 1284, 2564, 5124, 10244, 12288, 18432, 20484, 33792, 40964, 66048, 81924, 131328,
+    163844, 262272, 327684, 524299, 524309, 524329, 524352, 524369, 524449, 524609, 524929, 525569, 526849,
+    529409, 534529, 544769, 565249, 606209, 655364, 696353, 851969, 1048587, 1048592, 1310728, 1393154, 1396739,
+    13, 19, 28, 88, 328, 648, 1288, 2568, 5128, 10248, 20488, 21760, 34816, 40968, 66560, 81928, 131584, 163848,
+    262400, 327688, 524295, 524416, 655368, 696385, 698368, 704513, 1048595, 1048608, 1310724, 1393666, 1507330,
+    1572871, 1835009, 26, 35, 56, 176, 656, 1296, 2576, 5136, 10256, 20496, 24576, 36864, 40976, 67584, 81936,
+    132096, 163856, 262656, 327696, 524544, 655376, 696449, 1048590, 1048611, 1048640, 1310727, 1310742, 1310762,
+    1310802, 1310882, 1311042, 1311362, 1312002, 1313282, 1315842, 1320962, 1331202, 1351682, 1394690, 1396742,
+    1474562, 1572875, 1703937, 1921027, 1966082, 25, 37, 52, 67, 112, 352, 1312, 2592, 5152, 10272, 10880, 20512,
+    40992, 69632, 81952, 133120, 163872, 263168, 327712, 524301, 524307, 524800, 655392, 696577, 753665, 1048643,
+    1048704, 1310731, 1310736, 1396746, 1398018, 1572883, 1900546, 2080771, 38, 69, 74, 104, 131, 224, 704, 2624,
+    5184, 10304, 20544, 41024, 49152, 73728, 81984, 135168, 163904, 264192, 327744, 349184, 524323, 525312,
+    655371, 655381, 655401, 655424, 655441, 655521, 655681, 656001, 656641, 657921, 660481, 665601, 675841,
+    696833, 737281, 983041, 1048602, 1048614, 1048707, 1048832, 1310739, 1310752, 1376257, 1396754, 1400834,
+    1572899, 1835015, 2072579, 49, 70, 73, 133, 138, 148, 208, 259, 448, 1408, 5248, 5440, 10368, 20608, 41088,
+    82048, 139264, 163968, 266240, 327808, 344065, 524313, 524325, 524355, 526336, 655367, 655488, 688130,
+    697345, 950273, 1048646, 1048835, 1049088, 1310734, 1310755, 1310784, 1376264, 1396770, 1572931, 1703943,
+    1736706, 1835019, 1966081, 50, 134, 137, 261, 266, 276, 296, 416, 515, 896, 2816, 10496, 20736, 41216, 82176,
+    98304, 147456, 164096, 172033, 270336, 327936, 344066, 524357, 524419, 528384, 655616, 688132, 698371,
+    1048626, 1048650, 1048710, 1049091, 1049600, 1310787, 1310848, 1376260, 1396802, 1425410, 1572995, 1703947,
+    1746947, 1835027, 1900545, 2052099, 76, 97, 145, 262, 265, 517, 522, 532, 552, 592, 832, 1027, 1792, 2720,
+    5632, 20992, 41472, 82432, 86017, 164352, 172034, 174592, 278528, 328192, 344068, 524337, 524361, 524421,
+    524547, 532480, 655373, 655379, 655872, 688136, 698373, 700417, 868353, 1048714, 1048838, 1049603, 1050624,
+    1220610, 1310746, 1310758, 1310851, 1310976, 1376263, 1376278, 1376298, 1376338, 1376418, 1376578, 1376898,
+    1377538, 1378818, 1381378, 1386498, 1396866, 1417218, 1540098, 1573123, 1703955, 1835043, 2031618, 98, 140,
+    146, 273, 518, 521, 1029, 1034, 1044, 1064, 1104, 1184, 1664, 2051, 3584, 11264, 41984, 43009, 82944, 86018,
+    164864, 172036, 196608, 294912, 328704, 344072, 524425, 524549, 524803, 540672, 655395, 656384, 688144,
+    698377, 1048674, 1048722, 1048842, 1049094, 1050627, 1052672, 1134594, 1310790, 1310979, 1311232, 1376267,
+    1376272, 1396994, 1523714, 1573379, 1703971, 1736705, 1835075, 1966087, 1998850, 100, 193, 268, 274, 289,
+    529, 1030, 1033, 1360, 2053, 2058, 2068, 2088, 2128, 2208, 2368, 3328, 4099, 7168, 21505, 22528, 43010,
+    83968, 86020, 165888, 172040, 329728, 344080, 524385, 524433, 524553, 524805, 525315, 557056, 610305, 655385,
+    655397, 655427, 657408, 688160, 698385, 712705, 1048850, 1049098, 1049606, 1052675, 1056768, 1091586,
+    1310770, 1310794, 1310854, 1311235, 1311744, 1376275, 1376288, 1397250, 1573891, 1704003, 1835139, 1900551,
+    1966091, 2009091, 152, 194, 290, 524, 530, 545, 1041, 2054, 2057, 4101, 4106, 4116, 4136, 4176, 4256, 4416,
+    4736, 6656, 8195, 10753, 14336, 21506, 43012, 45056, 86024, 87296, 167936, 172048, 331776, 344096, 393216,
+    524561, 524809, 525317, 526339, 567297, 589824, 655429, 655491, 659456, 688139, 688149, 688169, 688192,
+    688209, 688289, 688449, 688769, 689409, 690689, 693249, 698401, 699009, 708609, 770049, 1015809, 1048770,
+    1048866, 1049106, 1049610, 1050630, 1056771, 1064960, 1070082, 1310858, 1310982, 1311747, 1312768, 1376270,
+    1376291, 1376320, 1397760, 1482754, 1574915, 1704067, 1835267, 1900555, 1916930, 1966099, 2031617, 196, 280,
+    292, 385, 546, 577, 680, 1036, 1042, 1057, 2065, 4102, 4105, 5377, 8197, 8202, 8212, 8232, 8272, 8352, 8512,
+    8832, 9472, 10754, 13312, 16387, 21508, 28672, 43016, 86032, 90112, 172064, 335872, 344128, 524481, 524577,
+    524817, 525321, 526341, 528387, 545793, 655409, 655433, 655493, 655619, 663552, 688135, 688256, 698433,
+    761857, 999425, 1049122, 1049618, 1050634, 1052678, 1059330, 1064963, 1081344, 1310818, 1310866, 1310986,
+    1311238, 1312771, 1314816, 1376323, 1376384, 1392641, 1397763, 1398786, 1576963, 1704195, 1736711, 1835523,
+    1900563, 1966115, 1998849, 2088963, 200, 386, 548, 1058, 16394, 16424, 16544, 17664, 18944, 57344, 180224,
+    535041, 671744, 698497, 1052682, 1056774, 1353730, 1392648, 1836035 };
+
+static int cbest_22[1023] = {
+    1, 2, 2097153, 4, 8, 3145729, 16, 32, 64, 3670017, 128, 256, 512, 1024, 3932161, 2048, 4096, 8192, 16384,
+    32768, 4063233, 65536, 131072, 262144, 524288, 1048576, 2097152, 4128769, 3, 6, 12, 24, 48, 96, 192, 384,
+    768, 1536, 3072, 6144, 12288, 24576, 49152, 98304, 196608, 393216, 786432, 1572864, 3145728, 5, 2097155, 9,
+    2097157, 10, 17, 2097161, 3145731, 3670016, 18, 33, 1835008, 2097169, 3145733, 20, 34, 65, 917504, 2097185,
+    3145737, 4161537, 36, 66, 129, 458752, 2097217, 3145745, 3670019, 40, 68, 130, 257, 229376, 2097281, 3145761,
+    3670021, 3932160, 72, 132, 258, 513, 114688, 2097409, 3145793, 3670025, 80, 136, 260, 514, 1025, 57344,
+    1966080, 2097665, 3145857, 3670033, 144, 264, 516, 1026, 2049, 28672, 2098177, 3145985, 3670049, 3932163,
+    160, 272, 520, 1028, 2050, 4097, 14336, 983040, 2099201, 3146241, 3670081, 3932165, 288, 528, 1032, 2052,
+    4098, 7168, 8193, 2101249, 3146753, 3670145, 3932169, 4063232, 320, 544, 1040, 2056, 3584, 4100, 8194, 16385,
+    491520, 2105345, 3147777, 3670273, 3932177, 4177921, 576, 1056, 1792, 2064, 4104, 8196, 16386, 32769,
+    2113537, 3149825, 3670529, 3932193, 640, 896, 1088, 2080, 4112, 8200, 16388, 32770, 65537, 245760, 2031616,
+    2129921, 3153921, 3671041, 3932225, 4063235, 448, 1152, 2112, 4128, 8208, 16392, 32772, 65538, 131073,
+    2162689, 3162113, 3672065, 3932289, 4063237, 224, 1280, 2176, 4160, 8224, 16400, 32776, 65540, 122880,
+    131074, 262145, 2228225, 3178497, 3674113, 3932417, 4063241, 112, 2304, 4224, 8256, 16416, 32784, 65544,
+    131076, 262146, 524289, 1015808, 2359297, 3211265, 3678209, 3932673, 4063249, 4128768, 56, 2560, 4352, 8320,
+    16448, 32800, 61440, 65552, 131080, 262148, 524290, 1048577, 2621441, 3276801, 3686401, 3933185, 4063265, 28,
+    4608, 8448, 16512, 32832, 65568, 131088, 262152, 524292, 1048578, 3407873, 3702785, 3934209, 4063297, 14,
+    5120, 8704, 16640, 30720, 32896, 65600, 131104, 262160, 507904, 524296, 1048580, 2097154, 3735553, 3936257,
+    4063361, 4128771, 7, 13, 25, 49, 97, 193, 385, 769, 1537, 3073, 6145, 9216, 12289, 16896, 24577, 33024,
+    49153, 65664, 98305, 131136, 196609, 262176, 393217, 524304, 786433, 1048584, 1572865, 2064384, 2097156,
+    3801089, 3940353, 4063489, 4128773, 4186113, 26, 50, 98, 194, 386, 770, 1538, 3074, 6146, 10240, 12290,
+    15360, 17408, 24578, 33280, 49154, 65792, 98306, 131200, 196610, 262208, 393218, 524320, 786434, 1048592,
+    1572866, 2097159, 2097160, 2097165, 2097177, 2097201, 2097249, 2097345, 2097537, 2097921, 2098689, 2100225,
+    2103297, 2109441, 2121729, 2146305, 2195457, 2293761, 2490369, 2883585, 3145730, 3948545, 4063745, 4128777,
+    52, 100, 196, 388, 772, 1540, 3076, 6148, 12292, 18432, 24580, 33792, 49156, 66048, 98308, 131328, 196612,
+    253952, 262272, 393220, 524352, 786436, 1048608, 1572868, 2097168, 3145732, 3964929, 4064257, 4128785, 11,
+    104, 200, 392, 776, 1544, 3080, 6152, 7680, 12296, 20480, 24584, 34816, 49160, 66560, 98312, 131584, 196616,
+    262400, 393224, 524416, 786440, 1048640, 1572872, 2097184, 3145735, 3145736, 3145741, 3145753, 3145777,
+    3145825, 3145921, 3146113, 3146497, 3147265, 3148801, 3151873, 3158017, 3170305, 3194881, 3244033, 3342337,
+    3538945, 3997697, 4065281, 4128801, 4161536, 19, 22, 208, 400, 784, 1552, 3088, 6160, 12304, 24592, 36864,
+    49168, 67584, 98320, 132096, 196624, 262656, 393232, 524544, 786448, 1032192, 1048704, 1572880, 1835009,
+    2097163, 2097216, 3145744, 3670018, 4067329, 4128833, 21, 35, 38, 44, 416, 800, 1568, 3104, 3840, 6176,
+    12320, 24608, 40960, 49184, 69632, 98336, 126976, 133120, 196640, 263168, 393248, 524800, 786464, 917505,
+    1048832, 1572896, 1835010, 2097171, 2097280, 3145760, 3670020, 4071425, 4128897, 37, 67, 70, 76, 88, 832,
+    1600, 3136, 6208, 12352, 24640, 49216, 73728, 98368, 135168, 196672, 264192, 393280, 458753, 525312, 786496,
+    917506, 1049088, 1572928, 1835012, 2097173, 2097187, 2097408, 3014657, 3145739, 3145792, 3670023, 3670024,
+    3670029, 3670041, 3670065, 3670113, 3670209, 3670401, 3670785, 3671553, 3673089, 3676161, 3682305, 3694593,
+    3719169, 3768321, 3866625, 4079617, 4129025, 4161539, 41, 69, 131, 134, 140, 152, 176, 1664, 1920, 3200,
+    6272, 12416, 24704, 49280, 81920, 98432, 139264, 196736, 229377, 266240, 393344, 458754, 526336, 786560,
+    917508, 1049600, 1572992, 1835016, 2097189, 2097219, 2097664, 2555905, 3145747, 3145856, 3670032, 4096001,
+    4129281, 4161541, 42, 73, 133, 259, 262, 268, 280, 304, 352, 3328, 6400, 12544, 24832, 49408, 63488, 98560,
+    114689, 147456, 196864, 229378, 270336, 393472, 458756, 516096, 528384, 786688, 917512, 1050624, 1573120,
+    1835024, 2080768, 2097193, 2097221, 2097283, 2098176, 2326529, 3145749, 3145763, 3145984, 3670048, 3932162,
+    4129793, 4161545, 74, 81, 137, 261, 515, 518, 524, 536, 560, 608, 704, 960, 6656, 12800, 25088, 49664, 57345,
+    98816, 114690, 163840, 197120, 229380, 278528, 393728, 458760, 532480, 786944, 917520, 1052672, 1573376,
+    1835040, 1966081, 2097225, 2097285, 2097411, 2099200, 2211841, 3145765, 3145795, 3146240, 3604481, 3670027,
+    3670080, 3932164, 4130817, 4161553, 82, 138, 145, 265, 517, 1027, 1030, 1036, 1048, 1072, 1120, 1216, 1408,
+    13312, 25600, 28673, 50176, 57346, 99328, 114692, 197632, 229384, 294912, 394240, 458768, 540672, 787456,
+    917536, 1056768, 1573888, 1835072, 1966082, 2097233, 2097289, 2097413, 2097667, 2101248, 2154497, 3145769,
+    3145797, 3145859, 3146752, 3375105, 3670035, 3670144, 3932167, 3932168, 3932173, 3932185, 3932209, 3932257,
+    3932353, 3932545, 3932929, 3933697, 3935233, 3938305, 3944449, 3956737, 3981313, 4030465, 4132865, 4161569,
+    4190209, 84, 146, 161, 266, 273, 480, 521, 1029, 2051, 2054, 2060, 2072, 2096, 2144, 2240, 2432, 2816, 14337,
+    26624, 28674, 31744, 51200, 57348, 100352, 114696, 198656, 229392, 327680, 395264, 458784, 557056, 788480,
+    917568, 983041, 1064960, 1574912, 1835136, 1966084, 2097297, 2097417, 2097669, 2098179, 2105344, 2125825,
+    3145801, 3145861, 3145987, 3147776, 3260417, 3670037, 3670051, 3670272, 3932176, 4136961, 4161601, 4177920,
+    148, 162, 274, 289, 522, 529, 1033, 2053, 4099, 4102, 4108, 4120, 4144, 4192, 4288, 4480, 4864, 5632, 7169,
+    14338, 28676, 53248, 57352, 102400, 114704, 200704, 229408, 258048, 397312, 458816, 589824, 790528, 917632,
+    983042, 1081344, 1576960, 1835264, 1966088, 2097313, 2097425, 2097673, 2098181, 2099203, 2111489, 2113536,
+    3080193, 3145809, 3145865, 3145989, 3146243, 3149824, 3203073, 3670053, 3670083, 3670528, 3932192, 4145153,
+    4161665, 164, 240, 276, 290, 321, 530, 545, 1034, 1041, 2057, 3585, 4101, 7170, 8195, 8198, 8204, 8216, 8240,
+    8288, 8384, 8576, 8960, 9728, 11264, 14340, 28680, 57360, 106496, 114720, 204800, 229440, 401408, 458880,
+    491521, 655360, 794624, 917760, 983044, 1040384, 1114112, 1581056, 1835520, 1966096, 2097441, 2097681,
+    2098185, 2099205, 2101251, 2104321, 2129920, 3145873, 3145993, 3146245, 3146755, 3153920, 3174401, 3670057,
+    3670085, 3670147, 3671040, 3899393, 3932171, 3932224, 4063234, 4161793, 168, 292, 322, 532, 546, 577, 1042,
+    1057, 1793, 2058, 2065, 3586, 4105, 7172, 8197, 14344, 15872, 16387, 16390, 16396, 16408, 16432, 16480,
+    16576, 16768, 17152, 17920, 19456, 22528, 28688, 57376, 114752, 212992, 229504, 409600, 459008, 491522,
+    802816, 918016, 983048, 1179648, 1589248, 1836032, 1966112, 2097473, 2097697, 2098193, 2099209, 2100737,
+    2101253, 2105347, 2162688, 2588673, 3145889, 3146001, 3146249, 3146757, 3147779, 3160065, 3162112, 3670089,
+    3670149, 3670275, 3672064, 3784705, 3932179, 3932288, 4063236, 4162049, 4177923, 120, 296, 897, 1058, 1089,
+    2081, 4106, 4113, 8201, 32774, 32780, 33536, 34304, 45056, 491524, 983056, 1605632, 1966144, 2031617,
+    2098209, 2098945, 2099217, 2228224, 3146257, 3146761, 3178496, 3670153, 3670277, 3670531, 3932181, 3932416,
+    4063329, 4063425, 4069377, 4075521 };
+
+static int cbest_23[1023] = {
+    1, 2, 4194320, 4, 2097160, 8, 1048580, 16, 524290, 32, 262145, 64, 128, 4325392, 256, 512, 2162696, 1024,
+    2048, 1081348, 4096, 8192, 540674, 16384, 32768, 270337, 65536, 131072, 262144, 4329488, 524288, 2164744,
+    1048576, 3, 1082372, 2097152, 4194321, 5, 2097161, 4194322, 6, 9, 1048581, 2097162, 4194304, 4194324,
+    6291480, 10, 17, 524291, 541186, 1048582, 2097164, 4194328, 5242900, 12, 18, 33, 66, 132, 264, 528, 1056,
+    2112, 4224, 8448, 16896, 33792, 67584, 135168, 270336, 3145740, 4718610, 20, 34, 65, 262147, 524294, 540672,
+    1048588, 2097176, 2621450, 4194352, 4456465, 24, 36, 129, 262149, 270593, 524298, 1048596, 1081344, 1572870,
+    2097192, 2359305, 4194384, 4325393, 40, 68, 130, 257, 262153, 524306, 1048612, 1310725, 2097224, 2162688,
+    4194448, 4325394, 48, 72, 258, 513, 262161, 524322, 786435, 1048644, 2097288, 2162697, 4194576, 4325376,
+    4325396, 6422552, 80, 136, 260, 514, 1025, 262177, 524354, 1048708, 2097416, 2162698, 4194832, 4325400,
+    5373972, 6357016, 96, 144, 516, 1026, 2049, 262209, 524418, 1048836, 1081349, 2097672, 2162700, 4195344,
+    4329616, 4849682, 160, 272, 520, 1028, 2050, 4097, 262273, 524546, 1049092, 1081350, 2098184, 3211276,
+    4196368, 4325424, 4587537, 5275668, 192, 288, 1032, 2052, 4098, 8193, 262401, 524802, 540675, 1049604,
+    2099208, 2162712, 2686986, 3178508, 4198416, 4325456, 320, 544, 1040, 2056, 4100, 8194, 16385, 262657,
+    525314, 1050628, 1081356, 2101256, 2162728, 2424841, 4202512, 4325520, 4734994, 384, 576, 2064, 4104, 8196,
+    16386, 32769, 263169, 526338, 540678, 1052676, 1081364, 1605638, 2105352, 2162760, 2164808, 2637834, 4210704,
+    4325648, 640, 1088, 2080, 4112, 8200, 16388, 32770, 65537, 264193, 270339, 528386, 540682, 1056772, 1081380,
+    1343493, 1589254, 2113544, 2162824, 4227088, 4325904, 4464657, 6488088, 768, 1152, 4128, 8208, 16392, 32772,
+    65538, 131073, 266241, 270341, 532482, 540690, 1064964, 1081412, 2129928, 2162952, 2367497, 4259856, 4326416,
+    1280, 2176, 4160, 8224, 16400, 32776, 65540, 131074, 270345, 540706, 802819, 1081476, 1318917, 2163208,
+    4327440, 4329489, 5406740, 1536, 2304, 8256, 16416, 32784, 65544, 131076, 262146, 270353, 278529, 540738,
+    557058, 794627, 1081604, 1082404, 1114116, 2163720, 2228232, 4329490, 4456464, 2560, 4352, 8320, 16448,
+    32800, 65552, 131080, 262148, 270369, 270592, 294913, 524289, 540802, 541184, 589826, 1081860, 1082368,
+    1179652, 2164736, 2359304, 3244044, 4329472, 4329492, 4333584, 4866066, 6426648, 3072, 4608, 16512, 32832,
+    65568, 131088, 135296, 262152, 270401, 327681, 540930, 655362, 1310724, 2164745, 2166792, 4329496, 4341776,
+    4718608, 5378068, 5120, 8704, 16640, 32896, 65600, 67648, 131104, 262160, 270465, 393217, 524292, 786434,
+    1048577, 1083396, 2164746, 2170888, 2621448, 2703370, 4358160, 4595729, 4853778, 6359064, 6144, 9216, 33024,
+    33824, 65664, 131136, 262176, 524296, 541202, 541698, 1048578, 1085444, 1572868, 2164748, 2179080, 4329520,
+    4390928, 4591633, 5242896, 10240, 16912, 17408, 33280, 65792, 131200, 262208, 270849, 524304, 524352, 542722,
+    1082373, 1089540, 1622022, 2097153, 2195464, 2433033, 3145736, 3213324, 4329552, 8456, 12288, 18432, 66048,
+    131328, 262272, 271361, 524320, 544770, 786433, 1048584, 1048704, 1082374, 1097732, 2097154, 2164760,
+    2689034, 4194323, 4587536, 5276692, 6291472, 7, 4228, 20480, 34816, 66560, 131584, 262400, 272385, 548866,
+    1048592, 1351685, 1572866, 2097156, 2097163, 2097408, 2164776, 2293768, 2426889, 3179532, 4194305, 4194325,
+    4329744, 6291481, 11, 2114, 24576, 36864, 132096, 262656, 270601, 274433, 524416, 541187, 1048583, 1048608,
+    1082380, 1146884, 1310721, 2097165, 2424840, 3145732, 4194306, 4194326, 4194329, 4194816, 4330000, 4849680,
+    5242901, 6291482, 6492184, 13, 19, 67, 133, 265, 529, 1057, 2113, 4225, 8449, 16897, 33793, 40960, 67585,
+    69632, 133120, 135169, 263168, 524544, 573442, 811011, 1048640, 1082388, 1212420, 1606662, 2097166, 2097168,
+    2164872, 2621442, 3145741, 4194308, 4194330, 4330512, 4718611, 4735506, 5242902, 6291464, 6291484, 6490136,
+    14, 21, 35, 134, 266, 530, 1058, 4226, 8450, 16898, 33794, 49152, 67586, 73728, 135170, 264192, 270338,
+    286721, 524295, 524800, 540673, 541190, 606210, 1048589, 1343492, 1344517, 2097177, 2097184, 2165000,
+    2359297, 2621451, 2638346, 2686984, 3145742, 4194312, 4194332, 4194353, 4194386, 4194452, 4194584, 4195376,
+    4196432, 4198544, 4202768, 4211216, 4228112, 4261904, 4331536, 4464656, 5242884, 5373968, 5410836, 7340060,
+    22, 25, 37, 70, 268, 532, 1060, 2116, 8452, 16900, 33796, 67588, 81920, 135172, 139264, 266240, 270340,
+    303105, 524299, 525312, 541194, 671746, 1048590, 1048597, 1048832, 1081345, 1082436, 1572871, 1589766,
+    2097178, 2097193, 2097216, 2097226, 2097292, 2097688, 2098216, 2099272, 2101384, 2105608, 2114056, 2130952,
+    2165256, 2232328, 2367496, 4194354, 4194385, 4456467, 4718594, 4718614, 4734992, 5242908, 6815770, 26, 38,
+    41, 69, 74, 131, 140, 536, 1064, 2120, 4232, 16904, 33800, 67592, 98304, 135176, 147456, 262151, 270344,
+    270595, 335873, 524307, 526336, 540676, 802818, 1048598, 1048613, 1048646, 1048844, 1049088, 1049108,
+    1049636, 1050692, 1052804, 1057028, 1065476, 1081346, 1082500, 1116164, 1183748, 1318916, 1605636, 2097180,
+    2097194, 2097225, 2097280, 2162689, 2165768, 2359307, 2621454, 2637832, 3211272, 4194336, 4194356, 4194449,
+    4325395, 4337680, 4456449, 4456469, 4464913, 4718618, 4870162, 5275664, 5407764, 5767190, 6291512, 6422544,
+    6553625, 28, 42, 49, 73, 82, 148, 259, 280, 1072, 2128, 4240, 8464, 33808, 67600, 135184, 163840, 262155,
+    270352, 270597, 278528, 401409, 524302, 524323, 524422, 524554, 524818, 525346, 526402, 528384, 528514,
+    532738, 540680, 541218, 558082, 591874, 659458, 794626, 803331, 1048614, 1048645, 1049600, 1082628, 1310727,
+    1589252, 2097196, 2097289, 2162690, 2359309, 2367753, 3145756, 3178504, 3246092, 3670030, 4194360, 4194368,
+    4194388, 4194450, 4194577, 4325377, 4325397, 4329620, 4345872, 4456473, 5242932, 5505045, 6291544, 6357008,
+    6422553, 44, 50, 81, 98, 137, 164, 261, 296, 515, 560, 2144, 4256, 8480, 16928, 67616, 135200, 196608,
+    262157, 262163, 262211, 262277, 262409, 262673, 263201, 264257, 266369, 270368, 279041, 294912, 295937,
+    329729, 397313, 524310, 524355, 532480, 540688, 540736, 541250, 1048604, 1048709, 1050624, 1081352, 1081472,
+    1082884, 1319173, 1572878, 2097228, 2097290, 2097417, 2097664, 2162692, 2162699, 2162944, 2168840, 2621466,
+    3145772, 3245068, 3407885, 4194392, 4194432, 4194578, 4194833, 4325378, 4325398, 4325401, 4325888, 4362256,
+    4599825, 4718642, 4980755, 5242964, 5373973, 6291608, 6357017, 6422554, 52, 76, 97, 138, 145, 196, 262, 328,
+    517, 592, 1027, 1120, 4288, 8512, 16960, 33856, 135232, 262165, 262179, 270400, 270609, 327680, 524314,
+    524326, 524419, 540704, 541314, 786439, 794883, 802817, 1048620, 1048710, 1048837, 1052672, 1081360, 1310733,
+    1572886, 1605634, 2097208, 2097418, 2097673, 2098176, 2162701, 2172936, 2359321, 2621482, 2705418, 2883595,
+    3145804, 3211268, 4194456, 4194560, 4194580, 4194834, 4195345, 4325380, 4325402, 4329617, 4395024, 4456497,
+    4718674, 4849683, 4866578, 5243028, 5373974, 6291736, 6357018, 6422536, 6422556, 56, 84, 146, 161, 194, 273,
+    392, 518, 521, 656, 1029, 1184, 2051, 2240, 8576, 17024, 33920, 67712, 262169, 262181, 270464, 270625,
+    393216, 524330, 524358, 524547, 541442, 557056, 786443, 794625, 1048628, 1048652, 1048838, 1049093, 1056768,
+    1081351, 1081376, 1084420, 1310741, 1343489, 1572902, 1589250, 1835015, 2097240, 2097420, 2097674, 2098185,
+    2099200, 2162702, 2162704, 2181128, 2359337, 2621514, 2686978, 3145868, 3178500, 3211277, 4194416, 4194836,
+    4195346, 4196369, 4325384, 4325404, 4325425, 4325458, 4325524, 4325656, 4326448, 4327504, 4329618, 4333840,
+    4342288, 4359184, 4392976, 4456529, 4595728, 4718738, 5243156, 5275669, 5373956, 6291992, 6357000, 6357020,
+    7471132, 162, 193, 289, 1030, 1312, 2053, 4099, 34048, 262185, 262213, 524338, 524362, 524803, 786451,
+    1048716, 1049605, 1064960, 1086468, 1310757, 2097256, 2097304, 2097676, 2098186, 2099209, 2101248, 2162713,
+    2424833, 2621578, 2703882, 3145996, 3178509, 4194480, 4198417, 4325426, 4456593, 4587539, 4718866, 4849666,
+    6292504, 6426776, 7405596 };
+
+static int cbest_24[1023] = {
+    1, 2, 8388675, 4, 12583010, 8, 6291505, 16, 32, 64, 11534427, 128, 256, 8388674, 4194337, 14155886, 3, 512,
+    8388673, 6, 12583011, 5, 1024, 10485843, 12, 6291504, 12583008, 9, 24, 2048, 3145752, 8388679, 10, 7077943,
+    14680178, 48, 1572876, 13631594, 17, 4096, 8388683, 96, 786438, 12583014, 20, 6291507, 18, 33, 192, 8192,
+    393219, 7340089, 8388691, 6815797, 11534426, 12583018, 384, 131073, 6291489, 6291509, 11927640, 34, 40, 65,
+    16384, 262146, 8388707, 8585282, 12582978, 66, 768, 524292, 8388611, 8454211, 11534419, 11534425, 12583026,
+    1048584, 6291513, 36, 129, 1536, 32768, 2097168, 4292641, 5767213, 80, 130, 4194336, 6291473, 11796569,
+    12615778, 14155882, 132, 3072, 12058719, 12582946, 68, 257, 65536, 5963820, 8388803, 11534411, 11534431,
+    14155887, 258, 6144, 196609, 393218, 6307889, 7077941, 160, 260, 8388672, 72, 264, 513, 12288, 131072,
+    8388931, 10534995, 11272277, 14155878, 14155884, 786436, 8486979, 10485842, 12583138, 7, 516, 24576, 4194339,
+    6291569, 11927641, 136, 320, 514, 520, 1025, 393217, 5242921, 7077939, 7077942, 8388677, 8389187, 8585283,
+    12583009, 14418028, 13, 528, 49152, 1572872, 2981910, 8388678, 10485841, 11542619, 12583266, 14286959,
+    15466612, 14, 4194341, 6291633, 12632162, 14680179, 25, 144, 1026, 1032, 2049, 98304, 262144, 786434,
+    3145753, 8389699, 11534459, 13631595, 11, 26, 640, 1040, 3145744, 6291506, 8388682, 8388687, 11534363,
+    11927642, 12583012, 12583522, 12681314, 13656170, 14024809, 28, 49, 1056, 196608, 1572877, 4194345, 6291761,
+    7340088, 8388681, 11010135, 12583015, 14680176, 272, 1028, 2050, 4097, 1572868, 3145754, 3538971, 6291457,
+    6316081, 6815793, 6815796, 8388699, 8390723, 10485827, 10485847, 13631586, 13631592, 22, 52, 97, 2064,
+    786439, 4194305, 6291488, 6291508, 7209014, 8388690, 11534403, 12584034, 14155854, 21, 50, 56, 98, 1280,
+    2080, 1490955, 1572878, 3670044, 4194353, 5963821, 6291497, 6292017, 6340657, 7733306, 8388643, 8388723,
+    8781888, 9175109, 9961551, 12582914, 12582994, 12583019, 12583022, 14155902, 14159982, 15728762, 19, 193,
+    288, 2052, 2112, 4098, 8193, 524288, 3145736, 3145756, 3407898, 4390944, 8392771, 10485851, 11534555,
+    11796571, 12583016, 13893736, 14155874, 14352495, 15204470, 15532148, 44, 104, 393216, 2195472, 6291511,
+    6291512, 7077927, 7340081, 8388689, 8388706, 8388739, 12582979, 12583034, 12585058, 14680162, 14680182, 112,
+    196, 385, 4128, 1097736, 1835022, 4227105, 4292640, 5767209, 5767212, 6292529, 6828085, 7077937, 8388610,
+    8388695, 8454210, 11534418, 11534423, 11534424, 12583027, 13631598, 35, 41, 194, 544, 2056, 2560, 4100, 4160,
+    8194, 16385, 262147, 548868, 1703949, 2146320, 4259873, 6291472, 6291517, 7340091, 8388609, 8396867, 8519746,
+    11534417, 11534683, 11927632, 12976225, 13369444, 14155822, 42, 67, 88, 100, 208, 769, 4224, 274434, 524293,
+    1073160, 6291493, 6815799, 6946868, 7077951, 8388705, 8585280, 8650817, 10158158, 11546715, 12058715,
+    12582976, 12587106, 14155880, 14286958, 14680186, 38, 134, 224, 386, 392, 770, 131075, 137217, 536580,
+    786432, 917511, 1048585, 2883606, 3604507, 4194401, 5963816, 6291491, 6291537, 6293553, 7864381, 8389059,
+    8454209, 10502227, 11272279, 11796568, 12583024, 12583074, 12615779, 14155883, 15401079, 37, 70, 268, 576,
+    1537, 4104, 8196, 8256, 16386, 32769, 268290, 393223, 1048576, 2097169, 3866653, 6291515, 6307888, 7077911,
+    7077940, 7079991, 7340073, 7340093, 7602235, 8388715, 8405059, 10485875, 10518611, 11534429, 11534939,
+    11559003, 12058718, 12582947, 12582986, 12583030, 14680146, 81, 131, 176, 416, 536, 5120, 8320, 134145,
+    524294, 786446, 2981908, 3153944, 3538970, 5767205, 6684722, 6815781, 8388802, 8389443, 8847424, 8912967,
+    9134150, 9240645, 10485779, 11370581, 11534410, 11534430, 11927643, 12582944, 12591202, 12714083, 13631562,
+    14024808, 82, 133, 262, 388, 448, 784, 1072, 1540, 3073, 8448, 131077, 1048586, 1441803, 1572892, 1576972,
+    3473434, 4194465, 6295601, 7766074, 8388627, 8388801, 9437259, 11272273, 11534443, 11796561, 11927624,
+    11927644, 12615776, 12845152, 13631610, 14156014, 14418030, 69, 84, 140, 200, 524, 1088, 1538, 2144, 4112,
+    8200, 16388, 32770, 65537, 262150, 393227, 788486, 1490954, 1572864, 2097170, 3145784, 4292643, 4423712,
+    5767215, 5898284, 6422576, 8388711, 8390211, 8421443, 8457283, 8585286, 11535451, 12058711, 12058717,
+    12582982, 12583394, 13639786, 14696562, 15466614, 15564916, 76, 259, 352, 772, 832, 1048, 4288, 6145, 16512,
+    394243, 786454, 3211288, 4194338, 5963812, 6291475, 6291481, 6291568, 6815805, 8388615, 8388930, 8454215,
+    10534994, 11272276, 11534409, 11802713, 12599394, 13647978, 14155879, 14155885, 14876787, 74, 161, 261, 266,
+    896, 1568, 2096, 3074, 3080, 8576, 10240, 16640, 131081, 655365, 1048588, 1310730, 1572908, 1605644, 1769485,
+    2211856, 2621460, 3342361, 4194593, 5079079, 5242920, 6291697, 6299697, 7077938, 7143479, 7340057, 8388807,
+    8388929, 8391747, 8455747, 8486978, 8781889, 11534415, 12583139, 12583778, 13107302, 14155876, 14156142,
+    14418024, 14680114, 14745714, 73, 162, 265, 280, 1152, 4192, 8208, 12289, 16392, 16896, 17152, 32772, 65538,
+    132097, 262154, 393235, 802822, 1736717, 2097152, 2097172, 2981906, 3145816, 3538969, 4243489, 4292645,
+    5963822, 6029359, 6291553, 6815765, 7012404, 7209015, 8585290, 8585794, 8716353, 9109574, 10485971, 11536475,
+    11928664, 12320861, 12582962, 12583136, 13008993, 13631530, 14024811, 14155894, 14162030, 14286955, 14352494,
+    15466608, 164, 518, 704, 776, 1664, 6146, 8384, 34304, 133121, 196611, 401411, 524300, 786437, 786470,
+    1105928, 1703948, 2949142, 3145728, 4194340, 6291477, 6291632, 6291889, 6307891, 6819893, 7078007, 7209012,
+    7348281, 7733307, 8388619, 8388676, 8389186, 8394819, 8454219, 8454723, 10190926, 10534993, 11534451,
+    11796553, 11796573, 12189790, 12584546, 12615782, 14418029, 138, 168, 400, 517, 532, 1792, 3076, 3136, 6160,
+    16768, 24577, 33024, 68608, 131089, 135169, 264194, 745477, 851974, 1490953, 1572940, 4194849, 4292897,
+    4390945, 5267497, 5636138, 6553651, 6823989, 7733304, 8388835, 8388935, 8455235, 8486977, 10321997, 10485840,
+    11534395, 11542618, 12058703, 12582950, 12583106, 12583267, 12617314, 14156398, 14168174, 15466613, 16089208,
+    137, 152, 321, 515, 521, 560, 1544, 2176, 8224, 12290, 16400, 20480, 32776, 33280, 33536, 65540, 131074,
+    137216, 262162, 266242, 393251, 425987, 552964, 917510, 1572874, 2097176, 3145880, 3407896, 3604506, 4292649,
+    4567075, 6291571, 6292273, 7372857, 8388939, 8400963, 8456259, 8519747, 8585298, 8589378, 10486099, 11538523,
+    11927633, 12583142, 12583264, 12586082, 12616034, 12632163, 12779619, 12976224, 14155898, 148, 522, 529,
+    1036, 1408, 3328, 6148, 33792, 49153, 67072, 196613, 270338, 393222, 458755, 524308, 528388, 786502, 1572873,
+    2981911, 3866652, 3883037, 4194343, 4194344, 4554787, 5242913, 6291760, 6307873, 6307893, 7077925, 7077947,
+    7078071, 8388867, 8389185, 8389698, 8454227, 8585281, 8781890, 9175111, 9273413, 10158159, 10510419,
+    11010131, 11534458, 11534491, 12615786, 12616290, 12616546, 12648546, 12746851, 14073961, 14418020, 14680306,
+    15, 324, 1064, 3584, 6272, 12320, 24578, 131105, 134144, 163841, 276482, 393221, 532484, 1048600, 1474571,
+    1573004, 1835020, 3145748, 3506202, 4195361, 4292609, 4294689, 5767181, 6291456, 6293041, 6308017, 6316080,
+    6324273, 6488112, 6815792, 7077923, 7077949, 8388686, 8389191, 8413251, 8601666, 9257029, 10928208, 11403348,
+    11534347, 11534362, 11542611, 11542617, 11927672, 11960408, 12582954, 12583013, 12583523, 12589154, 12616802,
+    12681315, 13631722, 13656171, 13893738, 14155846, 14156910, 14286951, 14286957, 15401078, 15532150, 145, 322,
+    328, 1027, 1033, 1120, 1552, 2304, 12292, 16416, 32784, 65544, 66048, 98305, 131076, 262145, 262178, 393283,
+    540676, 786435, 1056776, 1441802, 2818069, 3146008, 4194304, 4194321, 4194349, 4292657, 5242923, 5767229,
+    5771309, 5964332, 6291601, 6291635, 6308145, 6946869, 7209010, 7340153, 7782458, 8388680, 8388685, 8388811,
+    8389195, 8470595, 8585314, 8618050, 10059855, 10485835, 10485845, 10486355, 10534979, 10534999, 10584147,
+    11010134, 11272261, 11534361, 11665498, 11798617, 11927576, 11927634, 11993176, 12583270, 12615746, 12632160,
+    14155790, 14155850, 14155870, 14680177, 15827066, 146, 276, 336, 641, 800, 1034, 2816, 6656, 49154, 66560,
+    196617, 197121, 524324, 720901, 786442, 786566, 3158040, 3670040, 5963817, 6291637, 6292016, 6294577,
+    6307897, 6308657, 6340656, 6815861, 7078199, 8389203, 8390722, 8454243, 8486983, 8585218, 8847425, 9134151,
+    10485846, 10535123, 12583274, 12615794, 13631587, 14159978 };
+
+static int cbest_25[1023] = {
+    1, 2, 16777220, 4, 8388610, 8, 4194305, 16, 32, 18874372, 64, 128, 9437186, 256, 512, 4718593, 1024, 2048,
+    4096, 19136516, 8192, 16384, 32768, 9568258, 65536, 131072, 262144, 4784129, 524288, 1048576, 2097152,
+    4194304, 19169284, 8388608, 3, 9584642, 16777216, 16777221, 5, 8388611, 16777222, 6, 9, 18, 36, 72, 144, 288,
+    576, 1152, 2304, 4608, 9216, 18432, 36864, 73728, 147456, 294912, 589824, 1179648, 2359296, 4718592,
+    25165830, 10, 17, 4194307, 8388614, 9437184, 16777228, 20971525, 12, 33, 4194309, 4792321, 8388618, 12582915,
+    16777236, 18874368, 18874373, 20, 34, 65, 4194313, 8388626, 16777252, 18874374, 24, 66, 129, 4194321,
+    8388642, 9437187, 16777284, 27262982, 40, 68, 130, 257, 4194337, 8388674, 16777348, 18874380, 23068677,
+    26214406, 48, 132, 258, 513, 4194369, 8388738, 9437190, 16777476, 18874388, 80, 136, 260, 514, 1025, 4194433,
+    4718595, 8388866, 9437194, 13631491, 16777732, 18874404, 19173380, 21495813, 96, 264, 516, 1026, 2049,
+    4194561, 4718597, 8389122, 9437202, 13107203, 16778244, 18874436, 160, 272, 520, 1028, 2050, 4097, 4194817,
+    4718601, 4784128, 8389634, 9437218, 9568256, 16779268, 18874500, 19136512, 19136517, 28311558, 192, 528,
+    1032, 2052, 4098, 8193, 2392064, 4195329, 4718609, 8390658, 9437250, 16781316, 18874628, 19136518, 320, 544,
+    1040, 2056, 4100, 8194, 16385, 1196032, 4196353, 4718625, 8392706, 9437314, 16785412, 18874884, 23592965,
+    27525126, 384, 1056, 2064, 4104, 8196, 16386, 32769, 598016, 4198401, 4718657, 8396802, 9437442, 9568259,
+    9586690, 16793604, 18875396, 19136524, 23330821, 640, 1088, 2080, 4112, 8200, 16388, 32770, 65537, 299008,
+    4202497, 4718721, 8404994, 9437698, 14155779, 16809988, 18876420, 19136532, 26345478, 768, 2112, 4128, 8208,
+    16392, 32772, 65538, 131073, 149504, 4210689, 4718849, 8421378, 9438210, 9568262, 16842756, 18878468,
+    19136548, 1280, 2176, 4160, 8224, 16400, 32776, 65540, 74752, 131074, 262145, 4227073, 4719105, 8454146,
+    9439234, 9568266, 13762563, 16908292, 18882564, 19136580, 1536, 4224, 8256, 16416, 32784, 37376, 65544,
+    131076, 262146, 524289, 4259841, 4719617, 4784131, 8519682, 9441282, 9568274, 17039364, 18890756, 19136644,
+    21561349, 28573702, 2560, 4352, 8320, 16448, 18688, 32800, 65552, 131080, 262148, 524290, 1048577, 4325377,
+    4720641, 4784133, 4793345, 8650754, 9445378, 9568290, 13172739, 17301508, 18907140, 19136772, 28442630, 3072,
+    8448, 9344, 16512, 32832, 65568, 131088, 262152, 524292, 1048578, 2097153, 4456449, 4722689, 4784137,
+    8912898, 9453570, 9568322, 17825796, 18939908, 19137028, 23855109, 4672, 5120, 8704, 16640, 32896, 65600,
+    131104, 262160, 524296, 1048580, 2097154, 4726785, 4784145, 9469954, 9568386, 19005444, 19137540, 19169280,
+    19169285, 2336, 6144, 16896, 33024, 65664, 131136, 262176, 524304, 1048584, 2097156, 4194306, 4734977,
+    4784161, 5242881, 9502722, 9568514, 9584640, 10485762, 19138564, 19169286, 20971524, 23658501, 1168, 10240,
+    17408, 33280, 65792, 131200, 262208, 524320, 1048592, 2097160, 4194308, 4751361, 4784193, 4792320, 6291457,
+    8388609, 9568770, 12582914, 14286851, 19140612, 19398660, 27557894, 584, 12288, 33792, 66048, 131328, 262272,
+    524352, 1048608, 2097168, 4194312, 4784257, 9569282, 9699330, 14221315, 19144708, 19169292, 19922948,
+    23363589, 25165828, 292, 20480, 34816, 66560, 131584, 262400, 524416, 1048640, 2097184, 2396160, 4194320,
+    4784385, 4849665, 8388612, 8388624, 9570306, 9584643, 9961474, 16777217, 19152900, 19169300, 19173892, 146,
+    24576, 67584, 132096, 262656, 524544, 1048704, 2097216, 4194336, 4784641, 4980737, 8388616, 9572354,
+    12582913, 16777218, 16777223, 16777248, 19169316, 23068676, 26361862, 28704774, 7, 19, 37, 73, 145, 289, 577,
+    1153, 2305, 4609, 9217, 18433, 36865, 40960, 69632, 73729, 133120, 147457, 263168, 294913, 524800, 589825,
+    1048832, 1179649, 1198080, 2097280, 2359297, 4194368, 4785153, 9576450, 9584646, 11534338, 19169348,
+    19202052, 25165826, 25165831, 11, 38, 74, 290, 578, 1154, 2306, 4610, 9218, 18434, 36866, 49152, 73730,
+    135168, 147458, 264192, 294914, 525312, 589826, 1049088, 1179650, 2097408, 2359298, 4194432, 4718594,
+    4786177, 5767169, 8388615, 8388640, 9437185, 9584650, 13631490, 13778947, 16777224, 16777229, 16777238,
+    16777292, 16777364, 16777508, 16777796, 16778372, 16779524, 16781828, 16786436, 16795652, 16814084, 16850948,
+    16924676, 17072132, 17367044, 17956868, 19169412, 19267588, 20971521, 21495812, 27262980, 28606470, 13, 22,
+    76, 148, 580, 1156, 2308, 4612, 9220, 18436, 36868, 73732, 81920, 139264, 147460, 266240, 294916, 526336,
+    589828, 599040, 1049600, 1179652, 2097664, 2359300, 4194560, 4718596, 4788225, 6815745, 8388619, 8388646,
+    8388672, 8388682, 8388754, 8388898, 8389186, 8389762, 8390914, 8393218, 8397826, 8407042, 8425474, 8462338,
+    8536066, 8683522, 8978434, 9584658, 9601026, 10747906, 13107202, 16777230, 16777232, 16777237, 18874369,
+    19169540, 20971527, 23920645, 26214404, 14, 21, 26, 35, 44, 152, 296, 1160, 2312, 4616, 9224, 18440, 36872,
+    73736, 98304, 147464, 270336, 294920, 528384, 589832, 1050624, 1179656, 2098176, 2359304, 4194311, 4194323,
+    4194341, 4194377, 4194449, 4194593, 4194816, 4194881, 4195457, 4196609, 4198913, 4203521, 4212737, 4231169,
+    4268033, 4341761, 4489217, 4718600, 4792323, 5373953, 6553601, 8388627, 8388736, 9437188, 9437200, 9584674,
+    9633794, 16777253, 18874370, 18874375, 18874400, 19169796, 19660804, 21569541, 23887877, 25165838, 28459014,
+    29360135, 25, 52, 67, 88, 304, 592, 2320, 4624, 9232, 18448, 36880, 73744, 147472, 163840, 278528, 294928,
+    299520, 532480, 589840, 1052672, 1179664, 2099200, 2359312, 4194315, 4195328, 4718608, 4792325, 4800513,
+    8388622, 8388643, 8388864, 9437192, 9584706, 9586946, 12582919, 13180931, 13631489, 16777254, 16777280,
+    16777285, 19170308, 20185092, 20971533, 25165846, 27262978, 27262983, 41, 50, 69, 104, 131, 176, 608, 1184,
+    4640, 9248, 18464, 36896, 73760, 147488, 196608, 294944, 540672, 589856, 1056768, 1179680, 2101248, 2359328,
+    4194317, 4196352, 4718624, 4792329, 4816897, 8388630, 8388675, 8389120, 9584770, 9830402, 12582923, 13107201,
+    14352387, 16777244, 16777286, 16777344, 16777349, 18874376, 18874381, 18874390, 18874444, 18874516, 18874660,
+    18874948, 18875524, 18876676, 18878980, 18883588, 18892804, 18911236, 18948100, 19021828, 19171332, 19464196,
+    20054020, 20971541, 23068673, 23592964, 25165862, 26214402, 26214407, 28, 42, 49, 70, 82, 100, 133, 208, 259,
+    352, 1216, 2368, 9280, 18496, 36928, 73792, 147520, 149760, 294976, 327680, 557056, 589888, 1064960, 1179712,
+    2105344, 2359360, 4194325, 4194339, 4198400, 4718656, 4792337, 8388634, 8388739, 8389632, 9437191, 9437216,
+    9584898, 10092546, 12582931, 16777260, 16777350, 16777472, 16777477, 18874382, 18874384, 18874389, 20971557,
+    23068679, 23330820, 25165894, 28311556, 81, 134, 137, 164, 200, 261, 416, 515, 704, 2432, 4736, 18560, 36992,
+    73856, 147584, 295040, 393216, 589952, 1081344, 1179776, 2113536, 2359424, 4194329, 4194371, 4202496,
+    4718720, 4792353, 4915201, 8388650, 8388678, 8388867, 8390656, 9437195, 9437222, 9437248, 9437258, 9437330,
+    9437474, 9437762, 9438338, 9439490, 9441794, 9446402, 9455618, 9474050, 9510914, 9585154, 9732098, 10027010,
+    11796482, 12582947, 14155778, 14303235, 16777268, 16777478, 16777728, 16777733, 18874405, 19173376, 19173381,
+    19177476, 20971589, 21495809, 23666693, 25165958, 27262990, 31457287, 97, 138, 262, 265, 274, 328, 400, 517,
+    832, 1027, 1408, 4864, 9472, 37120, 73984, 74880, 147712, 295168, 590080, 655360, 1114112, 1179904, 2129920,
+    2359552, 4194345, 4194373, 4194435, 4210688, 4718848, 4792385, 5046273, 8388658, 8388742, 8389123, 8392704,
+    9437203, 9437312, 9585666, 11665410, 12582979, 16777300, 16777356, 16777734, 16778240, 16778245, 18874406,
+    18874432, 18874437, 19173382, 19185668, 20971653, 21495815, 23068685, 25166086, 26214414, 27262998, 27525124,
+    30408711, 56, 84, 98, 140, 161, 266, 518, 521, 530, 656, 800, 1029, 1664, 2051, 9728, 18944, 74240, 147968,
+    295424, 590336, 786432, 1180160, 2162688, 2359808, 4194353, 4194437, 4194563, 4227072, 4718599, 4718611,
+    4718629, 4718665, 4718737, 4718881, 4719104, 4719169, 4720897, 4723201, 4727809, 4737025, 4755457, 4792449,
+    4866049, 5013505, 5898241, 7077889, 8388690, 8388870, 8389635, 8396800, 9437198, 9437219, 9437440, 9568257,
+    12583043, 13631495, 13762562, 14229507, 16777316, 16777484, 16778246, 16779264, 16779269, 18874396, 18874438,
+    18874496, 18874501, 19136513, 20971781, 23068693, 25166342, 26214422, 27263014, 27561990, 28311554, 28311559,
+    28737542, 29884423 };
+
+static int cbest_26[1023] = {
+    1, 2, 33554467, 4, 50331698, 8, 25165849, 16, 32, 64, 46137391, 128, 256, 56623156, 512, 33554466, 16777233,
+    3, 1024, 28311578, 33554465, 6, 50331699, 5, 41943083, 12, 2048, 25165848, 50331696, 9, 24, 12582924,
+    33554471, 10, 4096, 14155789, 58720314, 48, 6291462, 54526006, 17, 33554475, 96, 8192, 3145731, 50331702, 20,
+    25165841, 25165851, 18, 33, 192, 29360157, 33554483, 50331682, 34, 16384, 27263003, 33554435, 35127330,
+    46137387, 46137390, 50331706, 384, 25165853, 40632357, 40, 65, 66, 768, 32768, 17563665, 25165833, 46137389,
+    56623158, 68, 1048577, 50331666, 36, 129, 1536, 2097154, 23068695, 33554531, 46137383, 48234541, 80, 130,
+    65536, 4194308, 28311579, 34078755, 47185966, 56623152, 56623157, 132, 3072, 8388616, 28311576, 136, 257,
+    14155788, 16777232, 33554595, 6144, 131072, 42336299, 45088808, 50331762, 50593842, 53870641, 160, 260,
+    25165881, 72, 258, 264, 513, 12288, 1572865, 3145730, 33554723, 272, 262144, 7077894, 23592983, 25296921,
+    33554464, 50331826, 57671733, 24576, 22544404, 25165913, 47710254, 61866041, 320, 514, 520, 1025, 6291460,
+    33554979, 34340899, 41943082, 46137407, 7, 528, 49152, 524288, 16777235, 46137359, 50331954, 544, 3145729,
+    3538947, 20971541, 25165977, 33554469, 35127331, 50331697, 54722614, 56623140, 13, 144, 516, 1026, 2049,
+    98304, 11272202, 12582920, 28311570, 33554470, 33555491, 41943081, 45350952, 56623164, 14, 640, 1040,
+    1048576, 14155785, 16777237, 46202927, 50332210, 50724914, 58720315, 25, 1056, 196608, 6291458, 12582925,
+    25166105, 27263001, 41943075, 44040233, 54526002, 54526007, 11, 26, 1028, 1088, 2050, 4097, 16777217,
+    23855127, 25165825, 25165840, 25165850, 28311582, 33554474, 33554479, 33556515, 46137455, 50331700, 51118130,
+    60489787, 62390329, 28, 49, 393216, 5636101, 6291463, 16777241, 29360156, 33554473, 35323938, 46137379,
+    50331703, 50332722, 56623124, 58720312, 50, 1280, 2080, 12582916, 12582926, 22675476, 25165845, 25166361,
+    25362457, 27263002, 28311562, 33554451, 33554491, 36700192, 39845925, 40632359, 41943087, 47185967, 50331650,
+    50331690, 54526004, 22, 52, 97, 288, 1032, 2052, 2112, 4098, 8193, 786432, 14155781, 14155791, 18350096,
+    25165852, 27361307, 29360153, 33554482, 33558563, 46137385, 46137519, 50331683, 56623154, 56655924, 58720306,
+    60817464, 64487487, 21, 56, 2176, 2097152, 9175048, 14680078, 23068693, 25559065, 33554434, 33554499,
+    46137386, 50331707, 50331710, 50333746, 62914622, 19, 100, 193, 1572864, 4587524, 13631501, 17563664,
+    25165832, 25165843, 25166873, 28311577, 33554433, 40632353, 40632356, 45088809, 50331704, 53870640, 55574583,
+    35, 44, 98, 104, 2056, 2560, 4100, 4160, 8194, 16385, 2293762, 8781832, 17661969, 25165855, 33554481,
+    33562659, 36372513, 45482024, 46137647, 48234543, 50331680, 53477425, 56623220, 58720318, 42, 70, 112, 385,
+    4224, 1146881, 4390916, 7340039, 11337738, 16777265, 23068694, 30408732, 33554487, 35127328, 46137388,
+    50331686, 50335794, 56623159, 57147444, 38, 41, 140, 194, 200, 386, 4352, 2195458, 25165865, 25167897,
+    28327962, 29360149, 29360159, 33554659, 41943099, 50331667, 50331730, 57671732, 58720298, 67, 88, 208, 280,
+    576, 769, 2064, 4104, 8196, 16386, 32769, 1097729, 3145735, 23068691, 27262995, 28311610, 33554443, 33554530,
+    33570851, 37224480, 40370213, 41943051, 46137382, 46137903, 46235695, 47710255, 48234537, 48234540, 50331664,
+    54525990, 56623284, 61866040, 69, 84, 134, 224, 560, 5120, 8320, 3145728, 3538946, 4194304, 6291470,
+    11534347, 16777297, 17039377, 20316178, 31457311, 33554529, 33554851, 34078754, 45088810, 46137381, 47185962,
+    50339890, 53870643, 54526014, 56623153, 61341752, 37, 76, 196, 268, 400, 772, 1120, 1537, 8448, 2097155,
+    7077892, 12582940, 15204366, 17301521, 18612240, 22544405, 23592981, 25165837, 25169945, 26935320, 34127907,
+    34603042, 46137399, 46333999, 47235118, 64749631, 81, 131, 176, 416, 536, 770, 2240, 4112, 8200, 8704, 16388,
+    32770, 65537, 1769473, 3145739, 4194309, 5668869, 14155784, 14155805, 17563667, 22741012, 25165835, 25165880,
+    27263007, 28311642, 28573722, 33554439, 33554594, 33555235, 33587235, 35127334, 35651617, 46138415, 50331890,
+    56098871, 56623412, 63799358, 65798204, 82, 133, 138, 168, 388, 448, 1072, 3073, 4480, 1048579, 6291478,
+    8388617, 9306120, 14163981, 16777361, 24117270, 25165873, 28835866, 29360141, 33554535, 33554593, 34078753,
+    34103331, 42074155, 42336298, 45350953, 47185964, 50331674, 50331763, 50348082, 50593843, 56623160, 57671735,
+    58720282, 60293179, 137, 152, 800, 1538, 1544, 2144, 8960, 10240, 16640, 6291456, 12582956, 23592982,
+    25165945, 25174041, 25296920, 27262987, 28311568, 30933020, 33556003, 39321638, 41943147, 42205227, 42385451,
+    46137403, 48234533, 50331760, 50332082, 51740723, 53739569, 54525974, 61866043, 262, 352, 832, 1152, 4128,
+    4288, 6145, 8208, 16392, 16896, 17920, 32772, 65538, 131073, 3145747, 3538945, 4194310, 4653060, 5636100,
+    7602183, 10158089, 12648460, 14155821, 17563669, 25165912, 28311571, 28311580, 28311706, 30670876, 33554547,
+    33554722, 33620003, 35127338, 37748775, 46139439, 47185958, 49283116, 50331746, 51380275, 56623668, 56672308,
+    57409588, 74, 161, 261, 276, 336, 392, 896, 3074, 8576, 17408, 35840, 1048581, 6291494, 6324230, 7077890,
+    8388608, 8388618, 11272200, 16777489, 23592979, 25166041, 33554599, 33557539, 40632365, 42336297, 44826665,
+    50331670, 50331827, 50332466, 50364466, 50593840, 50618418, 52428848, 56623136, 56623166, 57671729, 60489786,
+    62390328, 73, 259, 265, 304, 1540, 1600, 3088, 12289, 17152, 71680, 2097158, 2326530, 2818050, 3162115,
+    12058635, 12582988, 13467660, 14155780, 14155790, 14286861, 16777234, 17563649, 21168149, 22544400, 25165883,
+    25182233, 26214424, 33554563, 33554603, 34439203, 35323939, 41943211, 46137375, 47710250, 50331766, 50331824,
+    54591542, 56623142, 56721460, 58851386, 164, 266, 273, 524, 704, 776, 1664, 6146, 8224, 16400, 20480, 32776,
+    33280, 34304, 65540, 131074, 143360, 262145, 3145763, 5242885, 7077895, 10485770, 11370506, 11796491,
+    12582912, 13107212, 14155853, 14417933, 17563673, 19660819, 20971540, 25165976, 25166233, 28311583, 28311834,
+    33554721, 33554978, 33560611, 33685539, 34078759, 34340898, 35127346, 36388897, 36700193, 37355552, 42336291,
+    45088800, 45350954, 46137351, 46137406, 46141487, 50333234, 50606130, 54657078, 56624180, 58720378, 61603896,
+    162, 552, 672, 1792, 3076, 24577, 33792, 68608, 286720, 1048585, 1163265, 1409025, 6291526, 6553606, 8388620,
+    13631500, 14155777, 15466510, 16777745, 17170449, 23068679, 23617559, 23855125, 25165897, 25165969, 28311554,
+    33554727, 35127298, 35135522, 36175905, 40632373, 40636453, 46137355, 46137358, 46137423, 50331955, 50397234,
+    54526070, 56623108, 56623148, 59244602, 64487486, 321, 515, 521, 608, 3200, 6176, 12290, 34816, 137216,
+    573440, 1572867, 2097162, 3276803, 6291461, 6815750, 12583052, 15335438, 16777236, 20971537, 22675477,
+    23068703, 24641558, 25165915, 25166617, 25198617, 28311563, 29360189, 33554468, 33554539, 33554731, 33566755,
+    40632325, 41943339, 44040235, 46137357, 46137451, 47710252, 50331830, 50334770, 54722610, 54722615, 56623126,
+    56623141, 148, 274, 322, 522, 529, 784, 1048, 1408, 2304, 3328, 6148, 8256, 16416, 32784, 49153, 65544,
+    131076, 262146, 274432, 524289, 1146880, 3145795, 3407875, 4194316, 7340038, 14155917, 17567761, 18350097,
+    18677776, 25165917, 25166104, 25296913, 25296923, 25309209, 27263000, 27263035, 27295771, 28311560, 28311574,
+    28312090, 28336154, 28704794, 29425693, 32899102, 33554739, 33554977, 33555490, 33816611, 34078763, 34340897,
+    37093408, 41943080, 42336303, 45088812, 46137405, 46145583, 50331794, 50331834, 50331938, 50593846, 53870645,
+    55574582, 56229943, 56623165, 56625204, 58720442, 62390331, 63701054, 65929276, 518, 545, 1104, 1344, 3080,
+    3584, 24578, 40960, 66560, 548864, 1048593, 3670019, 6291590, 12582922, 16777216, 16778257, 22544406,
+    23855126, 25165824, 25165885, 25165905, 25166097, 25167385, 27328539, 27361305, 31195164, 33579043, 35192866,
+    39583782, 40632355, 44138537, 45482025, 46202923, 46202926, 47710246, 50331952, 50332211, 50337842, 50462770,
+    50724915, 51904563, 53477424, 54526000, 54526134, 60424251, 61866033, 145, 328, 517, 532, 546, 1027, 1216,
+    1552, 6400, 12292, 12352, 67584, 98305, 1097728, 1572869, 2097170, 3145734, 6733830, 11272203, 12582921,
+    12583180, 14155787, 14680076, 16777225, 16777239, 16777240, 25165979, 25231385, 25303065, 28360730, 29360221,
+    29622301, 33554787, 33554947, 33554987, 35127329, 35258402, 36700194, 38633511, 39452710, 39845927, 40697893,
+    41943074, 41943079, 41943595, 42139691, 43384874, 44040232, 46137515, 46137583, 48234557, 50331958, 50593826,
+    50774066, 51216434, 51642419, 53870625, 54526003, 54722612, 54747190, 59424826, 15, 641, 6152, 6656, 49154,
+    69632, 131080, 4194324, 11534346, 14156045, 17596433, 25168921, 25296925, 25362456, 27263067, 33556514,
+    35389474, 41943073, 50331701, 50331770, 50332194, 50343986, 50593850, 60817466 };
+
+static int cbest_27[1023] = {
+    1, 2, 67108883, 4, 100663322, 8, 50331661, 16, 32, 92274709, 64, 128, 113246233, 256, 512, 67108882,
+    33554441, 3, 1024, 67108881, 123731999, 6, 100663323, 5, 2048, 83886103, 12, 50331660, 100663320, 9, 24,
+    4096, 25165830, 67108887, 109051928, 10, 117440542, 48, 12582915, 50331657, 17, 8192, 54525964, 67108891,
+    100663314, 128974876, 18, 96, 67108867, 92274711, 100663326, 20, 50331663, 73400338, 92274708, 113246232, 33,
+    192, 16384, 27262982, 58720271, 34, 50331653, 92274705, 36, 384, 36700169, 46137354, 100663306, 40, 65,
+    32768, 13631491, 56623116, 67108915, 66, 768, 96469012, 113246235, 68, 23068677, 64487438, 72, 129, 1536,
+    65536, 67108947, 80, 4194305, 28311558, 73924626, 100663354, 132, 3072, 8388610, 48234506, 50331677,
+    85458967, 123731998, 130, 136, 257, 131072, 16777220, 67109011, 69206035, 78643217, 144, 6144, 33554440,
+    92274717, 100663386, 160, 14155779, 36962313, 50331693, 92274693, 258, 264, 513, 12288, 262144, 24117253,
+    67109139, 101711898, 113246225, 272, 6291457, 12582914, 32243719, 100663450, 109838360, 113246237, 288,
+    24576, 50331725, 67108880, 260, 320, 514, 1025, 524288, 50855949, 61865999, 67109395, 528, 49152, 25165828,
+    70254611, 74186770, 83886102, 92274741, 100663578, 106430491, 123731995, 7, 544, 33554443, 50331789,
+    79167505, 113246217, 123731997, 516, 576, 1026, 2049, 98304, 1048576, 12582913, 41943051, 54525965, 54919180,
+    67108885, 67109907, 73400339, 83886099, 85590039, 100663321, 109051930, 13, 640, 33554433, 50331656,
+    67108886, 83886101, 92274773, 92536853, 100663834, 109051929, 14, 26, 1056, 196608, 13631490, 33554445,
+    50331649, 50331917, 83230736, 102236186, 117440543, 25, 52, 520, 1028, 1088, 2050, 4097, 2097152, 6815745,
+    25165826, 25165831, 37093385, 67110931, 88080406, 92274707, 98041876, 123731991, 128974878, 11, 104, 1152,
+    393216, 23068676, 27262980, 50331659, 50331662, 58720269, 67108875, 67108890, 67108895, 79691792, 92274837,
+    94371861, 100663298, 100663315, 100663318, 100663324, 100664346, 103809050, 113246265, 117440538, 128974877,
+    22, 28, 49, 208, 1280, 11534338, 27459590, 39845896, 46137355, 50332173, 58720270, 67108866, 67108889,
+    92274710, 96469013, 100663312, 100663327, 113246234, 117440540, 44, 416, 1032, 2052, 2112, 4098, 8193,
+    786432, 4194304, 5767169, 19922948, 44040203, 46137352, 50331652, 51118093, 54525960, 56623117, 67108865,
+    67108899, 67112979, 109903896, 113377305, 120324126, 125829148, 128974872, 19, 88, 97, 832, 2176, 9961474,
+    13631489, 36700168, 70516755, 92274965, 100665370, 106692635, 113246297, 121634847, 21, 38, 50, 56, 176,
+    1664, 2304, 1572864, 4980737, 18350084, 29360135, 33554457, 50332685, 51904525, 64487439, 73924627, 92274704,
+    109051920, 123731983, 76, 193, 352, 1040, 2056, 2560, 3328, 4100, 8194, 16385, 9175042, 27262978, 27262983,
+    41615368, 49020938, 54525966, 58720267, 64487436, 67108871, 67117075, 73400336, 83886111, 90177558,
+    100663307, 109051932, 114294809, 117440534, 35, 98, 152, 194, 704, 4224, 6656, 3145728, 4587521, 13729795,
+    14155778, 50331669, 62914574, 67108914, 67108979, 69992467, 81788944, 83886087, 89128982, 92275221, 96469014,
+    100663304, 100663338, 100667418, 113246361, 115343385, 37, 42, 70, 112, 304, 385, 1408, 4352, 13312,
+    12582919, 24117252, 28311556, 33554473, 48234507, 50331655, 50333709, 54525956, 67108913, 80740368, 85655575,
+    92274713, 92667925, 95420437, 128974868, 41, 140, 608, 2064, 2816, 4104, 4608, 8196, 16386, 26624, 32769,
+    6291456, 7077889, 8388608, 25165838, 32243718, 40894472, 48234504, 54951948, 56623112, 67109075, 67125267,
+    69599251, 102367258, 127926300, 67, 100, 280, 388, 769, 1216, 5120, 5632, 53248, 12058626, 40370184,
+    45088779, 50331673, 50331676, 67108946, 92275733, 93061141, 96469008, 100663310, 100671514, 104071194,
+    109051912, 113246224, 113246489, 123732031, 131596317, 69, 74, 84, 224, 386, 560, 2432, 8448, 11264, 106496,
+    12582923, 20447236, 23068673, 31457287, 33554505, 36700171, 44564491, 50335757, 58720263, 60162063, 64487434,
+    67108919, 67108945, 67109267, 69402643, 73400342, 92274719, 100663355, 100663418, 113246236, 117440526,
+    123797535, 73, 196, 1120, 1537, 2080, 4112, 4864, 8200, 8704, 16388, 22528, 32770, 65537, 212992, 6029313,
+    14155777, 20185092, 24510469, 25165846, 56623118, 67108923, 67141651, 78643219, 83886135, 85458966, 92274695,
+    99352596, 100663346, 100663352, 102105114, 113246239, 81, 134, 770, 776, 2240, 9216, 9728, 45056, 425984,
+    10223618, 20807684, 28311554, 28311559, 34603017, 36700161, 36962312, 46137346, 50331689, 50331692, 50331709,
+    67109010, 67109651, 69206034, 73973778, 78643216, 91226134, 92274689, 92276757, 100663514, 100679706,
+    113246227, 113246745, 120455198, 123732063, 128974860, 133, 148, 168, 448, 3073, 4480, 10240, 19456, 90112,
+    851968, 8388611, 10092546, 12582912, 12582931, 23068679, 32243717, 33554569, 35651593, 36700173, 46137358,
+    50339853, 51183629, 56623108, 63963150, 67108931, 67108951, 70647827, 71303186, 73400346, 73924624, 74186771,
+    82837520, 85458963, 92274701, 92274716, 100663387, 101908506, 106430490, 113442841, 114819097, 123731994,
+    124256287, 131, 137, 200, 1538, 4128, 8208, 8960, 16392, 16896, 32772, 38912, 65538, 131073, 180224, 1703936,
+    5111809, 13631495, 16121859, 16777216, 16777221, 18481156, 25165862, 27262990, 27475974, 39321608, 50331679,
+    50331757, 52035597, 54525980, 67108955, 67110419, 67174419, 73400322, 75497489, 83886167, 85458965, 89653270,
+    92274692, 100663358, 100663378, 100663384, 100663706, 109051960, 109936664, 113246216, 123731996, 124780575,
+    82, 138, 145, 268, 772, 1552, 6145, 17408, 17920, 77824, 360448, 3407872, 4194307, 5046273, 42729483,
+    50331685, 50331721, 50331724, 61865997, 64487430, 67109009, 67109138, 69206033, 81264656, 84410391, 89391126,
+    92274725, 92278805, 100696090, 101711899, 101810202, 109838362, 113246209, 113246229, 113247257, 113639449,
+    117440574, 123732127, 146, 161, 296, 336, 392, 896, 3074, 18432, 35840, 155648, 720896, 6815744, 9240578,
+    12582947, 19660804, 33554697, 41418760, 50331853, 50348045, 50855948, 51052557, 61865998, 67108995, 67109015,
+    67111955, 70123539, 84934679, 92274743, 100663451, 100664090, 109838361, 162, 259, 265, 1540, 4160, 8224,
+    12289, 16400, 20480, 32776, 65540, 71680, 131074, 262145, 311296, 1441792, 13631499, 16777222, 24117249,
+    25165824, 25165894, 25427974, 27262998, 45613067, 50331695, 54525996, 54919181, 58720287, 67109019, 67239955,
+    83230737, 83886231, 92274737, 97189908, 100663370, 100663390, 100663442, 104857627, 109051992, 109314072,
+    113246219, 128974908, 129007644, 266, 273, 536, 3104, 6146, 33792, 143360, 622592, 2883584, 4194309, 4620289,
+    9830402, 12713987, 31981575, 32243715, 33554442, 36986889, 40632328, 41943049, 48234498, 49676298, 50331717,
+    50331785, 50331788, 50332045, 50954253, 53215245, 67109137, 67109394, 67115027, 73924630, 79364113, 88080407,
+    92282901, 96469020, 98041877, 100664858, 100728858, 101711896, 109576216, 113248281, 117440606, 123731987,
+    123731990, 123731993, 123732255, 262, 274, 289, 400, 592, 672, 1792, 3076, 24577, 34816, 286720, 1245184,
+    5767168, 8388614, 10403842, 12582979, 20709380, 20971525, 23068685, 33554953, 36700185, 36962315, 41943050,
+    44826635, 46137370, 48234510, 50364429, 54657036, 67109043, 67109123, 69664787, 70254610, 73400370, 79167507,
+    79691793, 92274740, 92274775, 92274805, 92700693, 96468996, 100663448, 100663579, 102432794, 104202266,
+    113246264, 117964830, 132907037, 261, 276, 290, 321, 515, 1544, 8256, 12290, 16416, 32784, 36864, 65544,
+    131076, 262146, 524289, 573440, 2490368, 4915201, 13631488, 13631507, 13737987, 24117255, 25165958, 27263014,
+    33554432, 35127305, 44695563, 50331727, 50332429, 50855945, 50905101, 54526028, 54788108, 56623132, 58720303,
+    61865995, 67109147, 67121171, 67371027, 69206039, 69632019, 73465874, 77594641, 78643221, 79167504, 83886097,
+    83886359, 88473622, 92274769, 93126677, 100663434, 100663454, 100663570, 100666394, 109052056, 111149080,
+    128974940, 129237020, 292, 322, 529, 784, 1072, 6148, 6208, 40960, 49153, 1146880, 4194313, 4980736, 6291459,
+    20316164, 25165829, 27328518, 28311566, 29360134, 30932999, 33554444, 36962305, 50331648, 50331781, 50331916,
+    54968332, 60227599, 67108884, 67109393, 67109906, 73924634, 75169810, 83886098, 85590038, 92274901, 92291093,
+    92536855, 100794394, 109051931, 113246249, 113250329, 113377304, 117440670, 119537694, 123732511, 129499164,
+    164, 324, 518, 530, 545, 1184, 1344, 3080, 3584, 24578, 67584, 2293760, 8388618, 10354690, 12583043,
+    14155783, 14680067, 23068693, 27394054, 33554437, 33555465, 36700201, 36732937, 36962317, 37093384, 39845897,
+    46137386, 50333197, 50397197, 55574540, 64487454, 67109171, 67109379, 67133459, 70254609, 73400402, 73924610,
+    74186768, 83099664, 83230738, 83886100, 85458975, 92274772, 92536852, 92635157, 100663576, 100663835,
+    100669466, 101711890, 102170650, 106430489, 106692634, 113246267, 113246296, 121634846, 123830303, 124518431,
+    128974874, 517, 532, 16448, 69632, 524290, 1048577, 4587520, 27262976, 46137353, 50331658, 50331741,
+    54525961, 56623148, 58720268, 58982415, 67109143, 67109203, 67633171, 78643225, 100663482, 102236187,
+    106954779, 123731982 };
+
+static int cbest_28[1023] = {
+    1, 2, 134217732, 4, 67108866, 8, 33554433, 16, 32, 150994948, 64, 128, 75497474, 256, 512, 37748737, 1024,
+    2048, 4096, 153092100, 8192, 16384, 32768, 76546050, 65536, 131072, 262144, 38273025, 524288, 1048576,
+    2097152, 4194304, 153354244, 8388608, 16777216, 33554432, 76677122, 67108864, 3, 134217728, 134217733, 5,
+    38338561, 67108867, 134217734, 6, 9, 18, 36, 72, 144, 288, 576, 1152, 2304, 4608, 9216, 18432, 36864, 73728,
+    147456, 294912, 589824, 1179648, 2359296, 4718592, 9437184, 18874368, 37748736, 201326598, 10, 17, 33554435,
+    67108870, 75497472, 134217740, 167772165, 12, 33, 33554437, 67108874, 100663299, 134217748, 150994944,
+    150994949, 20, 34, 65, 33554441, 67108882, 134217764, 150994950, 24, 66, 129, 33554449, 67108898, 75497475,
+    134217796, 153387012, 218103814, 40, 68, 130, 257, 33554465, 67108930, 134217860, 150994956, 184549381,
+    209715206, 48, 132, 258, 513, 33554497, 67108994, 75497478, 134217988, 150994964, 80, 136, 260, 514, 1025,
+    33554561, 37748739, 67109122, 75497482, 109051907, 134218244, 150994980, 171966469, 96, 264, 516, 1026, 2049,
+    33554689, 37748741, 67109378, 75497490, 104857603, 134218756, 150995012, 160, 272, 520, 1028, 2050, 4097,
+    33554945, 37748745, 38273024, 67109890, 75497506, 76546048, 76693506, 134219780, 150995076, 153092096,
+    153092101, 226492422, 192, 528, 1032, 2052, 4098, 8193, 19136512, 33555457, 37748753, 67110914, 75497538,
+    134221828, 150995204, 153092102, 320, 544, 1040, 2056, 4100, 8194, 16385, 9568256, 33556481, 37748769,
+    67112962, 75497602, 134225924, 150995460, 188743685, 220200966, 384, 1056, 2064, 4104, 8196, 16386, 32769,
+    4784128, 33558529, 37748801, 67117058, 75497730, 76546051, 134234116, 150995972, 153092108, 186646533, 640,
+    1088, 2080, 4112, 8200, 16388, 32770, 65537, 2392064, 33562625, 37748865, 67125250, 75497986, 113246211,
+    134250500, 150996996, 153092116, 210763782, 768, 2112, 4128, 8208, 16392, 32772, 65538, 131073, 1196032,
+    33570817, 37748993, 38346753, 67141634, 75498498, 76546054, 134283268, 150999044, 153092132, 1280, 2176,
+    4160, 8224, 16400, 32776, 65540, 131074, 262145, 598016, 33587201, 37749249, 67174402, 75499522, 76546058,
+    110100483, 134348804, 151003140, 153092164, 1536, 4224, 8256, 16416, 32784, 65544, 131076, 262146, 299008,
+    524289, 33619969, 37749761, 38273027, 67239938, 75501570, 76546066, 134479876, 151011332, 153092228,
+    172490757, 228589574, 2560, 4352, 8320, 16448, 32800, 65552, 131080, 149504, 262148, 524290, 1048577,
+    33685505, 37750785, 38273029, 67371010, 75505666, 76546082, 105381891, 134742020, 151027716, 153092356,
+    227540998, 3072, 8448, 16512, 32832, 65568, 74752, 131088, 262152, 524292, 1048578, 2097153, 33816577,
+    37752833, 38273033, 67633154, 75513858, 76546114, 135266308, 151060484, 153092612, 190840837, 5120, 8704,
+    16640, 32896, 37376, 65600, 131104, 262160, 524296, 1048580, 2097154, 4194305, 34078721, 37756929, 38273041,
+    68157442, 75530242, 76546178, 136314884, 151126020, 153093124, 153354240, 153354245, 6144, 16896, 18688,
+    33024, 65664, 131136, 262176, 524304, 1048584, 2097156, 4194306, 8388609, 34603009, 37765121, 38273057,
+    69206018, 75563010, 76546306, 76677120, 138412036, 151257092, 153094148, 153354246, 153391108, 189267973,
+    9344, 10240, 17408, 33280, 65792, 131200, 262208, 524320, 1048592, 2097160, 4194308, 8388610, 16777217,
+    35651585, 37781505, 38273089, 38338560, 71303170, 75628546, 76546562, 114294787, 142606340, 151519236,
+    153096196, 220463110, 4672, 12288, 33792, 66048, 131328, 262272, 524352, 1048608, 2097168, 4194312, 8388612,
+    16777218, 37814273, 38273153, 75759618, 76547074, 113770499, 152043524, 153100292, 153354252, 186908677,
+    2336, 20480, 34816, 66560, 131584, 262400, 524416, 1048640, 2097184, 4194320, 8388616, 16777220, 19169280,
+    33554434, 37879809, 38273281, 41943041, 76021762, 76548098, 76677123, 83886082, 153108484, 153354260,
+    167772164, 1168, 24576, 67584, 132096, 262656, 524544, 1048704, 2097216, 4194336, 8388624, 16777224,
+    33554436, 38010881, 38273537, 50331649, 67108865, 76550146, 100663298, 153124868, 153354276, 155189252,
+    210894854, 229638150, 584, 40960, 69632, 133120, 263168, 524800, 1048832, 2097280, 4194368, 8388640, 9584640,
+    16777232, 33554440, 38274049, 76554242, 76677126, 77594626, 153157636, 153354308, 159383556, 201326596, 292,
+    49152, 135168, 264192, 525312, 1049088, 2097408, 4194432, 8388672, 16777248, 33554448, 38275073, 38797313,
+    67108868, 67108880, 76562434, 76677130, 76695554, 79691778, 110231555, 134217729, 153223172, 153354372,
+    228851718, 146, 81920, 139264, 266240, 526336, 1049600, 2097664, 4194560, 4792320, 8388736, 16777280,
+    33554464, 38277121, 39845889, 67108872, 76578818, 76677138, 100663297, 134217730, 134217735, 134217760,
+    153354500, 184549380, 191365125, 7, 19, 37, 73, 145, 289, 577, 1153, 2305, 4609, 9217, 18433, 36865, 73729,
+    98304, 147457, 270336, 294913, 528384, 589825, 1050624, 1179649, 2098176, 2359297, 4194816, 4718593, 8388864,
+    9437185, 16777344, 18874369, 33554496, 38281217, 38338563, 76611586, 76677154, 92274690, 153354756,
+    153616388, 172556293, 191102981, 201326594, 201326599, 227672070, 11, 38, 74, 290, 578, 1154, 2306, 4610,
+    9218, 18434, 36866, 73730, 147458, 163840, 278528, 294914, 532480, 589826, 1052672, 1179650, 2099200,
+    2359298, 2396160, 4195328, 4718594, 8389120, 9437186, 16777472, 18874370, 33554560, 37748738, 38289409,
+    38338565, 46137345, 67108871, 67108896, 75497473, 76677186, 105447427, 109051906, 134217736, 134217741,
+    134217750, 134217804, 134217876, 134218020, 134218308, 134218884, 134220036, 134222340, 134226948, 134236164,
+    134254596, 134291460, 134365188, 134512644, 134807556, 135397380, 136577028, 138936324, 143654916, 153355268,
+    154140676, 167772161, 171966468, 218103812, 13, 22, 76, 148, 580, 1156, 2308, 4612, 9220, 18436, 36868,
+    73732, 147460, 196608, 294916, 540672, 589828, 1056768, 1179652, 2101248, 2359300, 4196352, 4718596, 8389632,
+    9437188, 16777728, 18874372, 33554688, 37748740, 38305793, 38338569, 54525953, 67108875, 67108902, 67108928,
+    67108938, 67109010, 67109154, 67109442, 67110018, 67111170, 67113474, 67118082, 67127298, 67145730, 67182594,
+    67256322, 67403778, 67698690, 68288514, 69468162, 71827458, 76677250, 76808194, 85983234, 104857602,
+    114819075, 134217742, 134217744, 134217749, 150994945, 153356292, 167772167, 209715204, 14, 21, 26, 35, 44,
+    152, 296, 1160, 2312, 4616, 9224, 18440, 36872, 73736, 147464, 294920, 327680, 557056, 589832, 1064960,
+    1179656, 1198080, 2105344, 2359304, 4198400, 4718600, 8390656, 9437192, 16778240, 18874376, 33554439,
+    33554451, 33554469, 33554505, 33554577, 33554721, 33554944, 33555009, 33555585, 33556737, 33559041, 33563649,
+    33572865, 33591297, 33628161, 33701889, 33849345, 34144257, 34734081, 35913729, 37748744, 38338577, 42991617,
+    52428801, 67108883, 67108992, 75497476, 75497488, 76677378, 77070338, 134217765, 150994946, 150994951,
+    150994976, 153358340, 157286404, 201326606, 234881031, 25, 52, 67, 88, 304, 592, 2320, 4624, 9232, 18448,
+    36880, 73744, 147472, 294928, 393216, 589840, 1081344, 1179664, 2113536, 2359312, 4202496, 4718608, 8392704,
+    9437200, 16779264, 18874384, 33554443, 33555456, 37748752, 38338593, 38347777, 38404097, 67108878, 67108899,
+    67109120, 75497480, 76677634, 100663303, 109051905, 114425859, 134217766, 134217792, 134217797, 153362436,
+    153387008, 153387013, 161480708, 167772173, 189333509, 201326614, 218103810, 218103815, 41, 50, 69, 104, 131,
+    176, 608, 1184, 4640, 9248, 18464, 36896, 73760, 147488, 294944, 589856, 599040, 655360, 1114112, 1179680,
+    2129920, 2359328, 4210688, 4718624, 8396800, 9437216, 16781312, 18874400, 33554445, 33556480, 37748768,
+    38338625, 38535169, 67108886, 67108931, 67109376, 76678146, 78643202, 100663307, 104857601, 134217756,
+    134217798, 134217856, 134217861, 150994952, 150994957, 150994966, 150995020, 150995092, 150995236, 150995524,
+    150996100, 150997252, 150999556, 151004164, 151013380, 151031812, 151068676, 151142404, 151289860, 151584772,
+    152174596, 153370628, 153387014, 155713540, 160432132, 167772181, 184549377, 188743684, 201326630, 209715202,
+    209715207, 28, 42, 49, 70, 82, 100, 133, 208, 259, 352, 1216, 2368, 9280, 18496, 36928, 73792, 147520,
+    294976, 589888, 786432, 1179712, 2162688, 2359360, 4227072, 4718656, 8404992, 9437248, 16785408, 18874432,
+    33554453, 33554467, 33558528, 37748800, 38338689, 67108890, 67108995, 67109888, 75497479, 75497504, 76679170,
+    76693504, 80740354, 100663315, 113836035, 134217772, 134217862, 134217984, 134217989, 150994958, 150994960,
+    150994965, 167772197, 184549383, 186646532, 201326662, 220495878, 226492420, 229900294, 81, 134, 137, 164,
+    200, 261, 416, 515, 704, 4736, 36992, 73856, 147584, 295040, 299520, 1179776, 2228224, 2359424, 8421376,
+    9437312, 18874496, 33554457, 33554499, 33562624, 37748864, 67108906, 67108934, 67109123, 67110912, 75497483,
+    75497510, 75497536, 75497546, 75497762, 75498050, 75499778, 75502082, 75506690, 75515906, 75534338, 75571202,
+    75644930, 75792386, 76087298, 76681218, 77856770, 80216066, 94371842, 100663331, 113246210, 134217780,
+    134217990, 134218240, 150994981, 153419780, 167772229, 171966465, 201326726, 218103822, 229769222, 251658247 };
+
+static int cbest_29[1023] = {
+    1, 2, 268435458, 4, 134217729, 8, 16, 335544322, 32, 64, 167772161, 128, 256, 512, 352321538, 1024, 2048,
+    4096, 176160769, 8192, 16384, 32768, 65536, 356515842, 131072, 262144, 524288, 1048576, 178257921, 2097152,
+    4194304, 8388608, 16777216, 33554432, 357564418, 67108864, 134217728, 268435456, 3, 178782209, 268435459, 5,
+    10, 20, 40, 80, 160, 320, 640, 1280, 2560, 5120, 10240, 20480, 40960, 81920, 163840, 327680, 655360, 1310720,
+    2621440, 5242880, 10485760, 20971520, 41943040, 83886080, 167772160, 6, 9, 134217731, 268435462, 335544320,
+    402653187, 17, 134217733, 268435466, 335544323, 12, 18, 33, 134217737, 268435474, 34, 65, 134217745,
+    268435490, 335544326, 469762051, 24, 36, 66, 129, 134217761, 167772163, 268435522, 335544330, 357826562,
+    436207619, 68, 130, 257, 134217793, 167772165, 176160768, 268435586, 335544338, 352321536, 48, 72, 132, 258,
+    513, 88080384, 134217857, 167772169, 268435714, 335544354, 352321539, 136, 260, 514, 1025, 44040192,
+    134217985, 167772177, 268435970, 335544386, 503316483, 96, 144, 264, 516, 1026, 2049, 22020096, 134218241,
+    167772193, 268436482, 335544450, 352321542, 486539267, 272, 520, 1028, 2050, 4097, 11010048, 134218753,
+    167772225, 268437506, 335544578, 352321546, 192, 288, 528, 1032, 2052, 4098, 8193, 5505024, 134219777,
+    167772289, 176160771, 178913281, 268439554, 335544834, 352321554, 444596227, 544, 1040, 2056, 4100, 8194,
+    16385, 2752512, 134221825, 167772417, 176160773, 268443650, 335545346, 352321570, 384, 576, 1056, 2064, 4104,
+    8196, 16386, 32769, 1376256, 134225921, 167772673, 176160777, 268451842, 335546370, 352321602, 356515840,
+    520093699, 1088, 2080, 4112, 8200, 16388, 32770, 65537, 688128, 134234113, 167773185, 176160785, 178257920,
+    268468226, 335548418, 352321666, 356515843, 511705091, 768, 1152, 2112, 4128, 8208, 16392, 32772, 65538,
+    131073, 344064, 134250497, 167774209, 176160801, 268500994, 335552514, 352321794, 2176, 4160, 8224, 16400,
+    32776, 65540, 131074, 172032, 262145, 89128960, 134283265, 167776257, 176160833, 268566530, 335560706,
+    352322050, 356515846, 490733571, 1536, 2304, 4224, 8256, 16416, 32784, 65544, 86016, 131076, 262146, 524289,
+    134348801, 167780353, 176160897, 268697602, 335577090, 352322562, 356515850, 4352, 8320, 16448, 32800, 43008,
+    65552, 131080, 262148, 524290, 1048577, 44564480, 134479873, 167788545, 176161025, 268959746, 335609858,
+    352323586, 356515858, 357892098, 3072, 4608, 8448, 16512, 21504, 32832, 65568, 131088, 262152, 524292,
+    1048578, 2097153, 134742017, 167804929, 176161281, 178257923, 269484034, 335675394, 352325634, 356515874,
+    446693379, 528482307, 8704, 10752, 16640, 32896, 65600, 131104, 262160, 524296, 1048580, 2097154, 4194305,
+    22282240, 135266305, 167837697, 176161793, 178257925, 270532610, 335806466, 352329730, 356515906, 524288003,
+    5376, 6144, 9216, 16896, 33024, 65664, 131136, 262176, 524304, 1048584, 2097156, 4194306, 8388609, 136314881,
+    167903233, 176162817, 178257929, 272629762, 336068610, 352337922, 356515970, 2688, 17408, 33280, 65792,
+    131200, 262208, 524320, 1048592, 2097160, 4194308, 8388610, 11141120, 16777217, 138412033, 168034305,
+    176164865, 178257937, 276824066, 336592898, 352354306, 356516098, 357564416, 513802243, 1344, 12288, 18432,
+    33792, 66048, 131328, 262272, 524352, 1048608, 2097168, 4194312, 8388612, 16777218, 33554433, 142606337,
+    168296449, 176168961, 178257953, 285212674, 337641474, 352387074, 356516354, 357564419, 672, 34816, 66560,
+    131584, 262400, 524416, 1048640, 2097184, 4194320, 5570560, 8388616, 16777220, 33554434, 67108865, 150994945,
+    168820737, 176177153, 178257985, 178782208, 301989890, 339738626, 352452610, 356516866, 336, 24576, 36864,
+    67584, 132096, 262656, 524544, 1048704, 2097216, 4194336, 8388624, 16777224, 33554436, 67108866, 169869313,
+    176193537, 178258049, 178946049, 343932930, 352583682, 356517890, 357564422, 491782147, 168, 69632, 133120,
+    263168, 524800, 1048832, 2097280, 2785280, 4194368, 8388640, 16777232, 33554440, 67108868, 134217730,
+    171966465, 176226305, 178258177, 201326593, 352845826, 356519938, 357564426, 402653186, 532676611, 84, 49152,
+    73728, 135168, 264192, 525312, 1049088, 2097408, 4194432, 8388672, 16777248, 33554448, 67108872, 89391104,
+    134217732, 176291841, 178258433, 268435457, 353370114, 356524034, 357564434, 369098754, 530579459, 42,
+    139264, 266240, 526336, 1049600, 1392640, 2097664, 4194560, 8388736, 16777280, 33554464, 67108880, 134217736,
+    176422913, 178258945, 184549377, 268435464, 354418690, 356532226, 357564450, 11, 21, 41, 81, 161, 321, 641,
+    1281, 2561, 5121, 10241, 20481, 40961, 81921, 98304, 147456, 163841, 270336, 327681, 528384, 655361, 1050624,
+    1310721, 2098176, 2621441, 4194816, 5242881, 8388864, 10485761, 16777344, 20971521, 33554496, 41943041,
+    67108896, 83886081, 134217744, 176685057, 178259969, 178782211, 268435460, 356548610, 357564482, 402653185,
+    447217667, 469762050, 525336579, 7, 22, 82, 162, 322, 642, 1282, 2562, 5122, 10242, 20482, 40962, 81922,
+    163842, 278528, 327682, 532480, 655362, 696320, 1052672, 1310722, 2099200, 2621442, 4195328, 5242882,
+    8389120, 10485762, 16777472, 20971522, 33554560, 41943042, 44695552, 67108928, 83886082, 134217760,
+    167772162, 177209345, 178262017, 178782213, 234881025, 268435463, 268435478, 268435498, 268435538, 268435618,
+    268435778, 268436098, 268436738, 268438018, 268440578, 268445698, 268455938, 268476418, 268517378, 268599298,
+    268763138, 269090818, 269746178, 271056898, 273678338, 278921218, 289406978, 310378498, 335544321, 356581378,
+    357564546, 360710146, 436207618, 14, 44, 164, 324, 644, 1284, 2564, 5124, 10244, 20484, 40964, 81924, 163844,
+    196608, 294912, 327684, 540672, 655364, 1056768, 1310724, 2101248, 2621444, 4196352, 5242884, 8389632,
+    10485764, 16777728, 20971524, 33554688, 41943044, 67108992, 83886084, 134217739, 134217749, 134217769,
+    134217792, 134217809, 134217889, 134218049, 134218369, 134219009, 134220289, 134222849, 134227969, 134238209,
+    134258689, 134299649, 134381569, 134545409, 134873089, 135528449, 136839169, 139460609, 144703489, 155189249,
+    167772164, 178266113, 178782217, 218103809, 268435467, 268435472, 335544328, 356646914, 357564674, 13, 19,
+    28, 88, 328, 648, 1288, 2568, 5128, 10248, 20488, 40968, 81928, 163848, 327688, 348160, 557056, 655368,
+    1064960, 1310728, 2105344, 2621448, 4198400, 5242888, 8390656, 10485768, 16778240, 20971528, 33554944,
+    41943048, 67109120, 83886088, 134217735, 134217856, 167772168, 178274305, 178782225, 180355073, 268435475,
+    268435488, 335544324, 356777986, 357564930, 385875970, 402653191, 469762049, 514326531, 26, 35, 56, 176, 656,
+    1296, 2576, 5136, 10256, 20496, 40976, 81936, 163856, 327696, 393216, 589824, 655376, 1081344, 1310736,
+    2113536, 2621456, 4202496, 5242896, 8392704, 10485776, 16779264, 20971536, 22347776, 33555456, 41943056,
+    67109376, 83886096, 134217984, 167772176, 178290689, 178782241, 268435470, 268435491, 268435520, 335544327,
+    335544342, 335544362, 335544402, 335544482, 335544642, 335544962, 335545602, 335546882, 335549442, 335554562,
+    335564802, 335585282, 335626242, 335708162, 335872002, 336199682, 336855042, 338165762, 340787202, 346030082,
+    357040130, 357565442, 357826560, 357908482, 377487362, 402653195, 436207617, 503316482, 25, 37, 52, 67, 112,
+    352, 1312, 2592, 5152, 10272, 20512, 40992, 81952, 163872, 174080, 327712, 655392, 1114112, 1310752, 2129920,
+    2621472, 4210688, 5242912, 8396800, 10485792, 16781312, 20971552, 33556480, 41943072, 67109888, 83886112,
+    134217741, 134217747, 134218240, 167772192, 178323457, 178782273, 192937985, 268435523, 268435584, 335544331,
+    335544336, 357566466, 357826563, 402653203, 486539266, 534773763, 38, 69, 74, 104, 131, 224, 704, 2624, 5184,
+    10304, 20544, 41024, 81984, 163904, 327744, 655424, 786432, 1179648, 1310784, 2162688, 2621504, 4227072,
+    5242944, 8404992, 10485824, 16785408, 20971584, 33558528, 41943104, 67110912, 83886144, 134217763, 134218752,
+    167772171, 167772181, 167772201, 167772224, 167772241, 167772321, 167772481, 167772801, 167773441, 167774721,
+    167777281, 167782401, 167792641, 167813121, 167854081, 167936001, 168099841, 168427521, 169082881, 170393601,
+    173015041, 178388993, 178782337, 188743681, 251658241, 268435482, 268435494, 268435587, 268435712, 335544339,
+    335544352, 352321537, 357568514, 358612994, 402653219, 469762055, 533725187, 49, 70, 73, 133, 138, 148, 208,
+    259, 448, 1408, 5248, 10368, 20608, 41088, 82048, 87040, 163968, 327808, 655488, 1310848, 2228224, 2621568,
+    4259840, 5243008, 8421376, 10485888, 11173888, 16793600, 20971648, 33562624, 41943168, 67112960, 83886208,
+    88080385, 134217753, 134217765, 134217795, 134219776, 167772167, 167772288, 176160770, 178520065, 178782465,
+    178913280, 243269633, 268435526, 268435715, 268435968, 335544334, 335544355, 335544384, 352321544, 357572610,
+    357826566, 402653251, 436207623, 444596226, 469762059, 492044291, 503316481, 50, 134, 137, 261, 266, 296,
+    416, 515, 896, 2816, 20736, 41216, 82176, 164096, 327936, 655616, 1310976, 1572864, 2359296, 2621696,
+    8454144, 10486016, 16809984, 20971776, 33570816, 44040193, 67117056, 83886336, 134217797, 167772416,
+    178782721, 268435506, 268435530, 268435590, 268435971, 268436480, 335544387, 335544448, 352321540, 357826570,
+    364904450, 402653315, 436207627, 469762067, 486539265 };
+
+static int cbest_30[1023] = {
+    1, 2, 541065219, 4, 811597826, 8, 405798913, 16, 32, 64, 743964675, 128, 913047554, 256, 541065218,
+    270532609, 3, 512, 456523777, 541065217, 6, 811597827, 5, 676331523, 12, 129, 405798912, 258, 811597824, 9,
+    24, 516, 1024, 202899456, 541065223, 541065283, 10, 1032, 946864130, 48, 2064, 101449728, 879230978, 17,
+    4128, 541065227, 811597858, 96, 8256, 50724864, 811597830, 20, 16512, 405798915, 18, 33, 192, 2048, 33024,
+    25362432, 405798929, 473432065, 541065235, 769327107, 66048, 439615489, 743964674, 811597834, 132096,
+    12681216, 405798917, 34, 40, 65, 264192, 541065251, 528384, 6340608, 743964673, 811597842, 384, 1056768,
+    405798921, 36, 66, 4096, 2113536, 3170304, 371982337, 743964683, 80, 4227072, 1585152, 8454144, 777781251,
+    68, 130, 768, 16908288, 541065347, 743964679, 760872963, 913047555, 792576, 33816576, 811597890, 917340162,
+    160, 67633152, 405798945, 72, 132, 257, 8192, 396288, 135266304, 913047552, 1536, 270532608, 811597954,
+    913047558, 260, 198144, 405798977, 727056387, 136, 456523776, 541065475, 743964691, 193, 386, 99072, 514,
+    3072, 405799041, 541065216, 929955842, 144, 320, 513, 16384, 49536, 743964707, 921501698, 997588994, 264,
+    520, 772, 541065315, 676331522, 811598082, 7, 24768, 270532611, 456523779, 458670081, 913047562, 385, 6144,
+    228261888, 338165761, 541065221, 541065411, 541065731, 743964739, 811597825, 13, 1028, 1544, 12384,
+    270532641, 541065222, 541065282, 676331521, 14, 259, 270532613, 270532673, 405799169, 541065346, 811597874,
+    904593410, 913047570, 946864131, 25, 272, 517, 770, 1025, 1040, 6192, 202899457, 541065473, 743964803,
+    879230979, 11, 26, 131, 640, 1026, 1033, 3088, 12288, 405798914, 456523781, 541065226, 541065231, 541065281,
+    676331539, 811597828, 811597859, 811597922, 811598338, 28, 49, 528, 2065, 3096, 101449729, 270532617,
+    405798928, 464977921, 473432064, 541065225, 676331555, 710148099, 811597831, 913047586, 946864128, 161, 288,
+    518, 1540, 2056, 4129, 32768, 114130944, 202899458, 202899464, 405798937, 439615488, 460750849, 498794497,
+    541065243, 541065735, 541066243, 676331527, 811597955, 879230976, 22, 52, 97, 133, 1034, 1548, 6176, 8257,
+    50724865, 101449732, 405798916, 456523785, 541065234, 541065299, 541066251, 769327106, 811597856, 811598080,
+    21, 50, 56, 262, 322, 2066, 2080, 16513, 24576, 50724866, 101449730, 236716032, 270532625, 405798961,
+    405799040, 405799425, 541065267, 541067283, 642514947, 811597835, 811597838, 879230986, 913047618, 946864146,
+    1014497282, 19, 774, 2049, 3080, 4130, 33025, 25362433, 202899460, 202899520, 219807744, 541065287,
+    541069347, 676331531, 743964931, 811597832, 811597866, 879230994, 980680706, 44, 98, 104, 137, 644, 1036,
+    8258, 12352, 66049, 101449760, 405798919, 405798920, 456523793, 541065233, 541065250, 541073475, 591790083,
+    769327105, 811597850, 811598342, 811598850, 946864134, 946864194, 112, 266, 387, 2052, 2068, 4112, 16514,
+    132097, 12681217, 50724880, 118358016, 371982336, 405798933, 452296705, 541065239, 541081731, 743964672,
+    811597843, 811598858, 879230982, 896139266, 913047682, 35, 41, 194, 524, 544, 1056, 1280, 2050, 4132, 6160,
+    33026, 264193, 25362434, 25362440, 57065472, 109903872, 405798925, 405798931, 405800961, 439615493,
+    473432067, 473432073, 541065291, 541067267, 541073411, 541098243, 545357827, 566427651, 770400259, 811597862,
+    811599890, 811601922, 42, 88, 100, 145, 208, 4160, 8260, 16385, 24704, 66050, 528385, 6340609, 12681220,
+    50724868, 405799171, 439615491, 439615497, 456523809, 541065249, 541131267, 743964682, 743964687, 811601954,
+    946864138, 38, 224, 274, 2072, 16516, 132098, 1056769, 6340610, 12681218, 59179008, 101449736, 185991168,
+    405799429, 405799937, 473432097, 507248641, 539017219, 541065410, 541197315, 743964681, 805355522, 811597840,
+    811606082, 862322690, 37, 67, 196, 532, 576, 1288, 4097, 4136, 12320, 33028, 49152, 65536, 264194, 2113537,
+    3170305, 25362436, 54951936, 202899472, 405798923, 405799945, 473432069, 490340353, 541065259, 541329411,
+    743964677, 743964699, 743965187, 743965699, 765165571, 769327111, 777781250, 811597846, 811614338, 81, 176,
+    388, 1048, 8224, 8264, 49408, 66052, 528386, 4227073, 50724872, 384663553, 402677761, 405798944, 405800977,
+    456523841, 541593603, 743964678, 760872962, 782073859, 811598018, 811599874, 811630850, 815890434, 836960258,
+    70, 290, 16520, 32770, 132100, 1056770, 1585153, 4227074, 8454145, 29589504, 92995584, 101449744, 270532705,
+    270532737, 371982341, 405803041, 448069633, 536903683, 541065603, 542121987, 743964802, 760872961, 811597891,
+    811597986, 811663874, 913047810, 917340163, 69, 84, 200, 548, 769, 4098, 4104, 4144, 8320, 24640, 33032,
+    264196, 2113538, 3170306, 8454146, 16908289, 27475968, 28532736, 202899488, 371982339, 405799009, 405807169,
+    541065255, 541065539, 541069315, 543178755, 544235523, 676331587, 743964929, 769327115, 771440643, 777781249,
+    809517058, 810573826, 811729922, 76, 82, 416, 1064, 2112, 8272, 66056, 528388, 792577, 6340612, 8454148,
+    16908290, 33816577, 404758529, 405798976, 405798993, 405815425, 456523905, 541065345, 777781255, 811862018,
+    913047553, 913047556, 913048066, 946864162, 134, 448, 641, 2096, 2560, 2576, 16528, 132104, 1056772, 1585154,
+    12681224, 14794752, 16908292, 46497792, 67633153, 405799105, 405831937, 407945217, 431161345, 542650371,
+    549519363, 760872967, 811597888, 812126210, 879231010, 913047559, 917340160, 73, 392, 580, 776, 1088, 4100,
+    8193, 16448, 33040, 65540, 98304, 264200, 396289, 2113540, 3170308, 13737984, 16908296, 25362448, 33816580,
+    135266305, 371982401, 388890625, 405864961, 473432081, 541065987, 557973507, 676331651, 727056386, 742404099,
+    743965191, 758824963, 769327123, 777781267, 807436290, 811598210, 812654594, 74, 140, 352, 1096, 1537, 8288,
+    66064, 98816, 528392, 792578, 4227076, 6340616, 33816578, 33816584, 50724896, 380436481, 403718145,
+    405286913, 405931009, 418480129, 439615505, 541065474, 541857795, 574881795, 727056385, 743964690, 743965707,
+    162, 168, 261, 1538, 2128, 16544, 132112, 198145, 1056776, 1585156, 7397376, 12681232, 23248896, 33816592,
+    67633154, 67633160, 101449792, 270532865, 405798947, 405798953, 406063105, 456524033, 541065379, 608698371,
+    676331571, 743444483, 743964723, 743966739, 794689539, 811597906, 811597952, 879231042, 913047566, 152, 832,
+    1152, 4192, 8194, 24577, 33056, 49280, 131072, 264208, 396290, 2113544, 3170312, 6868992, 14266368, 25362464,
+    67633168, 135266306, 202899584, 371982345, 406327297, 541065351, 541461507, 743964715, 743968803, 756711427,
+    769327139, 786235395, 813182978, 820051970, 915259394, 917876738, 929955843, 138, 896, 1160, 1282, 5152,
+    8208, 66080, 99073, 131080, 528400, 792580, 4227080, 6340624, 50724928, 67633184, 135266320, 270532610,
+    405799297, 439615521, 456523778, 458670080, 541066755, 541077507, 743964689, 743964706, 743964771, 743972931,
+    811597894, 811598594, 828506114, 913047683, 917340166, 921501699, 923713538, 929955840, 946864258, 997588995,
+    164, 268, 400, 515, 645, 784, 1290, 1552, 2192, 2580, 3073, 4224, 5160, 10320, 16576, 16640, 20640, 41280,
+    49154, 82560, 132128, 165120, 198146, 330240, 660480, 1056784, 1320960, 1585160, 2641920, 3698688, 5283840,
+    8454152, 10567680, 11624448, 12681248, 21135360, 42270720, 67633156, 84541440, 101449856, 135266336,
+    169082880, 338165760, 405798949, 405798979, 405803009, 541065314, 541065479, 541065601, 541263363, 725008387,
+    742924291, 743964695, 743981187, 777781259, 811598083, 812390402, 845414402, 879231106, 913047808, 921501696,
+    991346690, 997588992, 321, 3074, 4256, 8196, 33088, 49537, 196608, 264224, 396292, 2113552, 3170320, 3434496,
+    25362496, 135266308, 135266368, 270532640, 270532657, 363528193, 371982353, 410025985, 473432129, 541065355,
+    541065537, 541065729, 676331779, 743964867, 743966723, 743997699, 745037827, 748257283, 760872971, 769327171,
+    811603970, 912267266, 913047563, 195, 265, 280, 521, 704, 773, 3076, 5120, 8384, 66112, 99074, 197632,
+    528416, 792584, 4227088, 6340640, 50724992, 270532612, 270532672, 405799168, 414253057, 439615553, 541065220,
+    541065730, 541164291, 727056419, 743964705, 743964738, 744030723, 811597898, 811597958, 811606018, 811994114,
+    912787458, 913047560, 917340170, 148, 209, 324, 522, 1664, 24769, 32896, 132160, 198148, 262160, 1056800,
+    1585168, 1849344, 5812224, 8454160, 12681280, 270532736, 270532801, 270533121, 405798981, 405799043,
+    405799681, 405801985, 422707201, 541065313, 541068291, 541089795, 676331520, 722894851, 727056391, 741916675,
+    743708675, 744096771, 811599362, 913047578, 913048070, 913048578, 918396930, 929955850, 146, 225, 418, 1546,
+    2176, 2564, 6145, 8200, 10304, 16386, 33152, 49538, 98560, 264256, 396296, 1717248, 2113568, 3170336,
+    7133184, 16908304, 25362560, 135266312, 202899712, 228261889, 371982369, 405799057, 406591489, 456523780,
+    473432193, 541065363, 541081603, 541114755, 735510531, 744228867, 760872979, 769327235, 811597875, 811598019,
+    811598086, 811598208, 811795970, 879231002, 904593411, 913047571, 913047574, 913048586, 197, 336, 1029, 1545,
+    1568, 1792, 12385, 49153, 66176, 98308, 99076, 792592, 4227104, 270532615, 270532616, 456524289, 464977920,
+    541065409, 541065472, 541065602, 541065991, 676331547, 743964737, 811597962, 811597987, 811598336, 811610114,
+    912527362, 913049618, 917340178, 946864386 };
+
+static int cbest_31[1023] = {
+    1, 2, 1073741828, 4, 536870914, 8, 268435457, 16, 32, 1207959556, 64, 128, 603979778, 256, 512, 301989889,
+    1024, 2048, 4096, 1224736772, 8192, 16384, 32768, 612368386, 65536, 131072, 262144, 306184193, 524288,
+    1048576, 2097152, 4194304, 1226833924, 8388608, 16777216, 33554432, 67108864, 613416962, 134217728,
+    268435456, 306708481, 536870912, 3, 1073741824, 1073741829, 5, 536870915, 1073741830, 6, 9, 18, 36, 72, 144,
+    288, 576, 1152, 2304, 4608, 9216, 18432, 36864, 73728, 147456, 294912, 589824, 1179648, 2359296, 4718592,
+    9437184, 18874368, 37748736, 75497472, 150994944, 301989888, 1610612742, 10, 17, 268435459, 536870918,
+    603979776, 1073741836, 1227096068, 1342177285, 12, 33, 268435461, 536870922, 805306371, 1073741844,
+    1207959552, 1207959557, 20, 34, 65, 268435465, 536870930, 1073741860, 1207959558, 24, 66, 129, 268435473,
+    536870946, 603979779, 1073741892, 1744830470, 40, 68, 130, 257, 268435489, 536870978, 1073741956, 1207959564,
+    1476395013, 1677721606, 48, 132, 258, 513, 268435521, 536871042, 603979782, 613548034, 1073742084,
+    1207959572, 80, 136, 260, 514, 1025, 268435585, 301989891, 536871170, 603979786, 872415235, 1073742340,
+    1207959588, 1375731717, 96, 264, 516, 1026, 2049, 268435713, 301989893, 536871426, 603979794, 838860803,
+    1073742852, 1207959620, 160, 272, 520, 1028, 2050, 4097, 268435969, 301989897, 306184192, 536871938,
+    603979810, 612368384, 1073743876, 1207959684, 1224736768, 1224736773, 1811939334, 192, 528, 1032, 2052, 4098,
+    8193, 153092096, 268436481, 301989905, 536872962, 603979842, 1073745924, 1207959812, 1224736774, 320, 544,
+    1040, 2056, 4100, 8194, 16385, 76546048, 268437505, 301989921, 306774017, 536875010, 603979906, 1073750020,
+    1207960068, 1509949445, 1761607686, 384, 1056, 2064, 4104, 8196, 16386, 32769, 38273024, 268439553,
+    301989953, 536879106, 603980034, 612368387, 1073758212, 1207960580, 1224736780, 1493172229, 640, 1088, 2080,
+    4112, 8200, 16388, 32770, 65537, 19136512, 268443649, 301990017, 536887298, 603980290, 905969667, 1073774596,
+    1207961604, 1224736788, 1686110214, 768, 2112, 4128, 8208, 16392, 32772, 65538, 131073, 9568256, 268451841,
+    301990145, 536903682, 603980802, 612368390, 1073807364, 1207963652, 1224736804, 1280, 2176, 4160, 8224,
+    16400, 32776, 65540, 131074, 262145, 4784128, 268468225, 301990401, 536936450, 603981826, 612368394,
+    880803843, 1073872900, 1207967748, 1224736836, 1536, 4224, 8256, 16416, 32784, 65544, 131076, 262146, 524289,
+    2392064, 268500993, 301990913, 306184195, 537001986, 603983874, 612368402, 1074003972, 1207975940,
+    1224736900, 1379926021, 1828716550, 2560, 4352, 8320, 16448, 32800, 65552, 131080, 262148, 524290, 1048577,
+    1196032, 268566529, 301991937, 306184197, 537133058, 603987970, 612368418, 843055107, 1074266116, 1207992324,
+    1224737028, 1227128836, 1820327942, 3072, 8448, 16512, 32832, 65568, 131088, 262152, 524292, 598016, 1048578,
+    2097153, 268697601, 301993985, 306184201, 537395202, 603996162, 612368450, 1074790404, 1208025092,
+    1224737284, 1526726661, 5120, 8704, 16640, 32896, 65600, 131104, 262160, 299008, 524296, 1048580, 2097154,
+    4194305, 268959745, 301998081, 306184209, 537919490, 604012546, 612368514, 1075838980, 1208090628,
+    1224737796, 1226833920, 1226833925, 6144, 16896, 33024, 65664, 131136, 149504, 262176, 524304, 1048584,
+    2097156, 4194306, 8388609, 269484033, 302006273, 306184225, 538968066, 604045314, 612368642, 613416960,
+    1077936132, 1208221700, 1224738820, 1226833926, 1514143749, 10240, 17408, 33280, 65792, 74752, 131200,
+    262208, 524320, 1048592, 2097160, 4194308, 8388610, 16777217, 270532609, 302022657, 306184257, 306708480,
+    541065218, 604110850, 612368898, 914358275, 1082130436, 1208483844, 1224740868, 1763704838, 12288, 33792,
+    37376, 66048, 131328, 262272, 524352, 1048608, 2097168, 4194312, 8388612, 16777218, 33554433, 272629761,
+    302055425, 306184321, 545259522, 604241922, 612369410, 910163971, 1090519044, 1209008132, 1224744964,
+    1226833932, 1495269381, 18688, 20480, 34816, 66560, 131584, 262400, 524416, 1048640, 2097184, 4194320,
+    8388616, 16777220, 33554434, 67108865, 153354240, 276824065, 302120961, 306184449, 553648130, 604504066,
+    612370434, 613416963, 613564418, 1107296260, 1210056708, 1224753156, 1226833940, 9344, 24576, 67584, 132096,
+    262656, 524544, 1048704, 2097216, 4194336, 8388624, 16777224, 33554436, 67108866, 134217729, 285212673,
+    302252033, 306184705, 570425346, 605028354, 612372482, 1140850692, 1212153860, 1224769540, 1226833956,
+    1687158790, 1837105158, 4672, 40960, 69632, 133120, 263168, 524800, 1048832, 2097280, 4194368, 8388640,
+    16777232, 33554440, 67108868, 76677120, 134217730, 302514177, 306185217, 606076930, 612376578, 613416966,
+    1216348164, 1224802308, 1226833988, 2336, 49152, 135168, 264192, 525312, 1049088, 2097408, 4194432, 8388672,
+    16777248, 33554448, 67108872, 134217732, 268435458, 303038465, 306186241, 335544321, 608174082, 612384770,
+    613416970, 671088642, 881852419, 1224867844, 1226834052, 1342177284, 1830813702, 1168, 81920, 139264, 266240,
+    526336, 1049600, 2097664, 4194560, 8388736, 16777280, 33554464, 38338560, 67108880, 134217736, 268435460,
+    304087041, 306188289, 402653185, 536870913, 612401154, 613416978, 805306370, 1224998916, 1226834180,
+    1241513988, 1530920965, 584, 98304, 270336, 528384, 1050624, 2098176, 4194816, 8388864, 16777344, 33554496,
+    67108896, 134217744, 268435464, 306192385, 306708483, 612433922, 613416994, 620756994, 1225261060,
+    1226834436, 1275068420, 1380450309, 1528823813, 1610612740, 1821376518, 292, 163840, 278528, 532480, 1052672,
+    2099200, 4195328, 8389120, 16777472, 19169280, 33554560, 67108928, 134217760, 268435472, 306200577,
+    306708485, 306782209, 310378497, 536870916, 536870928, 612499458, 613417026, 637534210, 843579395,
+    1073741825, 1225785348, 1226834948, 146, 196608, 540672, 1056768, 2101248, 4196352, 8389632, 16777728,
+    33554688, 67108992, 134217792, 268435488, 306216961, 306708489, 318767105, 536870920, 612630530, 613417090,
+    805306369, 918552579, 1073741826, 1073741831, 1073741856, 1226835972, 1476395012, 7, 19, 37, 73, 145, 289,
+    577, 1153, 2305, 4609, 9217, 18433, 36865, 73729, 147457, 294913, 327680, 557056, 589825, 1064960, 1179649,
+    2105344, 2359297, 4198400, 4718593, 8390656, 9437185, 9584640, 16778240, 18874369, 33554944, 37748737,
+    67109120, 75497473, 134217856, 150994945, 268435520, 306249729, 306708497, 612892674, 613417218, 738197506,
+    1226838020, 1228931076, 1610612738, 1610612743, 11, 38, 74, 290, 578, 1154, 2306, 4610, 9218, 18434, 36866,
+    73730, 147458, 294914, 393216, 589826, 1081344, 1179650, 2113536, 2359298, 4202496, 4718594, 8392704,
+    9437186, 16779264, 18874370, 33555456, 37748738, 67109376, 75497474, 134217984, 150994946, 268435584,
+    301989890, 306315265, 306708513, 369098753, 536870919, 536870944, 603979777, 613417474, 872415234, 915406851,
+    1073741832, 1073741837, 1073741846, 1073741900, 1073741972, 1073742116, 1073742404, 1073742980, 1073744132,
+    1073746436, 1073751044, 1073760260, 1073778692, 1073815556, 1073889284, 1074036740, 1074331652, 1074921476,
+    1076101124, 1078460420, 1083179012, 1092616196, 1111490564, 1149239300, 1226842116, 1227096064, 1227096069,
+    1233125380, 1342177281, 1375731716, 1514668037, 1744830468, 13, 22, 76, 148, 580, 1156, 2308, 4612, 9220,
+    18436, 36868, 73732, 147460, 294916, 589828, 655360, 1114112, 1179652, 2129920, 2359300, 4210688, 4718596,
+    4792320, 8396800, 9437188, 16781312, 18874372, 33556480, 37748740, 67109888, 75497476, 134218240, 150994948,
+    268435712, 301989892, 306446337, 306708545, 436207617, 536870923, 536870950, 536870976, 536870986, 536871058,
+    536871202, 536871490, 536872066, 536873218, 536875522, 536880130, 536889346, 536907778, 536944642, 537018370,
+    537165826, 537460738, 538050562, 539230210, 541589506, 546308098, 555745282, 574619650, 613417986, 614465538,
+    687865858, 838860802, 1073741838, 1073741840, 1073741845, 1207959553, 1226850308, 1227096070, 1342177287,
+    1677721604, 14, 21, 26, 35, 44, 152, 296, 1160, 2312, 4616, 9224, 18440, 36872, 73736, 147464, 294920,
+    589832, 786432, 1179656, 2162688, 2359304, 4227072, 4718600, 8404992, 9437192, 16785408, 18874376, 33558528,
+    37748744, 67110912, 75497480, 134218752, 150994952, 268435463, 268435475, 268435493, 268435529, 268435601,
+    268435745, 268435968, 268436033, 268436609, 268437761, 268440065, 268444673, 268453889, 268472321, 268509185,
+    268582913, 268730369, 269025281, 269615105, 270794753, 273154049, 277872641, 287309825, 301989896, 306708609,
+    343932929, 419430401, 536870931, 536871040, 603979780, 603979792, 613419010, 613548032, 616562690, 910688259,
+    1073741861, 1207959554, 1207959559, 1207959584, 1226866692, 1258291204, 1610612750, 1763966982, 1839202310,
+    1879048199, 25, 52, 67, 88, 304, 592, 2320, 4624, 9232, 18448, 36880, 73744, 147472, 294928, 589840, 1179664,
+    1310720, 2228224, 2359312, 2396160, 4259840, 4718608, 8421376, 9437200, 16793600, 18874384, 33562624,
+    37748752, 67112960, 75497488, 134219776, 150994960, 268435467, 268436480, 301989904, 306708737, 307232769,
+    536870926, 536870947, 536871168, 603979784, 613421058, 805306375, 872415233, 1073741862, 1073741888,
+    1073741893, 1226899460, 1227096076, 1291845636, 1342177293, 1495531525, 1610612758, 1744830466, 1744830471,
+    1838153734, 41, 50, 69, 104, 131, 176, 608, 18464, 73760, 147488, 589856, 1179680, 1572864, 2359328, 4325376,
+    4718624, 8454144, 9437216, 16809984, 18874400, 33570816, 67117056, 75497504, 134221824, 301989920, 306708993,
+    306774016, 308281345, 536870934, 536870979, 629145602, 805306379, 1073741894, 1073741952, 1207959560,
+    1207959700, 1207959844, 1207960708, 1207961860, 1207964164, 1207968772, 1207977988, 1207996420, 1208033284,
+    1208107012, 1208549380, 1209139204, 1210318852, 1212678148, 1217396740, 1226964996, 1283457028, 1342177301,
+    1476395009, 1509949444, 1610612774, 1677721607 };
+
+static unsigned int cbest_32[1023] = {
+    1, 2149580803, 2, 4, 3224371202, 8, 1612185601, 16, 32, 2955673603, 64, 128, 256, 3627417602, 512, 1024,
+    2149580802, 1074790401, 1813708801, 3, 2149580801, 2048, 3224371203, 6, 2686976003, 5, 12, 1612185600,
+    3224371200, 2149580807, 9, 24, 806092800, 3761766402, 10, 1025, 4096, 3493068802, 48, 2050, 403046400,
+    2149580811, 2149581315, 17, 4100, 3056435203, 3224371206, 96, 8200, 201523200, 20, 16400, 1612185603,
+    2149580819, 3224371458, 18, 33, 192, 32800, 100761600, 1880883201, 2955673602, 3224371210, 8192, 65600,
+    1746534401, 384, 131200, 50380800, 1612185605, 2149580835, 34, 40, 65, 262400, 1612185729, 2955673601,
+    3224371218, 768, 524800, 25190400, 1049600, 1612185609, 2149580867, 36, 66, 129, 1536, 2099200, 12595200,
+    1477836801, 3224371234, 80, 16384, 4198400, 3090022403, 6297600, 8396800, 1612185617, 2149580931, 2955673607,
+    2955673667, 3022848003, 3627417603, 68, 130, 257, 16793600, 3224371266, 3677798402, 3148800, 33587200, 160,
+    3072, 67174400, 1612185633, 2149581059, 2955673611, 3627417600, 72, 132, 258, 513, 1574400, 134348800,
+    3224371330, 32768, 268697600, 2888499203, 787200, 537395200, 1612185665, 2955673619, 136, 260, 320, 514,
+    6144, 1074790400, 1813708800, 3627417634, 393600, 3627417606, 3694592002, 2149581827, 2955673635, 3661004802,
+    3963289602, 144, 264, 516, 1026, 1537, 3074, 196800, 2149580800, 3224371714, 640, 12288, 65536, 3627417610,
+    98400, 1612185857, 2149581571, 2686976002, 272, 520, 1028, 2049, 6148, 906854400, 3224372226, 7, 49200,
+    1074790403, 1813708803, 1838899201, 2149580805, 2149582339, 3224371201, 3593830402, 3627417618, 1280, 2052,
+    3073, 24576, 1343488001, 1612186113, 1813708817, 2149580806, 2149582851, 2686976001, 2955673731, 13, 288,
+    528, 1032, 12296, 24600, 3224371586, 3761766403, 14, 131072, 1074790405, 1813708805, 3493068803, 25, 4098,
+    6146, 12300, 806092801, 1612186625, 1847296001, 2149580810, 2149580815, 2149581314, 2955673859, 3224371204,
+    3224371970, 11, 26, 544, 1040, 4097, 24592, 49152, 453427200, 1074790657, 1612185602, 1830502401, 1981644801,
+    2149580809, 2149581826, 2821324803, 3056435202, 3224371207, 3224373250, 3761766400, 28, 49, 2051, 2056, 4104,
+    6150, 403046401, 1074790409, 1074790913, 1813708809, 1880883200, 2149580827, 2149582849, 2686976007,
+    3493068800, 3627417666, 4101, 12292, 806092802, 1612185793, 1746534400, 2149580818, 2149581313, 2149584899,
+    2686976131, 2955674115, 3224371459, 22, 52, 97, 576, 1027, 1056, 2560, 3075, 8201, 49184, 201523201,
+    1612185604, 2149580851, 2552627203, 2686976259, 3056435201, 3224371211, 3224371214, 4030464002, 21, 50, 56,
+    8196, 16401, 98304, 262144, 403046402, 940441600, 1074790417, 1612185728, 1612185985, 2149584903, 2686976011,
+    3224371208, 3224372227, 3627417730, 3896115202, 19, 193, 4102, 24584, 32801, 100761601, 806092804, 806092864,
+    873267200, 1612187649, 1796915201, 2149580817, 2149580834, 2149580899, 2149582338, 2149589003, 2351104003,
+    2955674627, 3056435211, 3224371226, 3224371456, 3224373248, 3761766406, 44, 98, 104, 1029, 1088, 2064, 8193,
+    8202, 8208, 65601, 98368, 201523202, 226713600, 403046432, 1612185607, 1612185608, 2149580823, 2149597203,
+    2955673600, 3224371219, 3224375298, 3493068806, 3493068866, 3560243202, 3761766530, 112, 385, 2054, 8194,
+    16402, 131201, 50380801, 201523216, 403046404, 470220800, 1074790433, 1477836800, 1612186624, 1813708833,
+    2149580995, 2149581319, 2149613603, 2250342403, 2686976019, 3224371250, 3493068930, 3627417858, 35, 41, 194,
+    1281, 4112, 32802, 49168, 196608, 262401, 100761602, 100761608, 436633600, 806092808, 806093312, 1612185613,
+    1880883203, 2149580833, 2149580866, 2149581443, 2149588995, 2149646403, 2955673699, 3056435207, 3224375302,
+    3761766410, 3761766914, 42, 88, 100, 208, 769, 1033, 1152, 2080, 8204, 16392, 65602, 196736, 524801,
+    25190401, 50380804, 201523204, 403046656, 1074791169, 1612185616, 1746534403, 2149581187, 2149712003,
+    2199961603, 3069030403, 3224371216, 3224371235, 3224371298, 3224379402, 3425894402, 3493068810, 38, 224, 386,
+    2058, 2562, 5120, 16404, 131202, 524288, 1049601, 25190402, 50380802, 201523328, 235110400, 403046408,
+    738918400, 1074790465, 1528217601, 1612185625, 1813708865, 2015232001, 2149580843, 2149581323, 2149843203,
+    2686976035, 2955673605, 2955673795, 3073228803, 3090022402, 3224371222, 3224371462, 3224371522, 3224387602,
+    3627418114, 37, 67, 196, 4108, 16416, 32804, 98336, 262402, 2099201, 12595201, 100761604, 100761664,
+    218316800, 806092816, 1612185611, 1612185731, 1612189697, 1746534433, 1880883205, 1880883265, 1948057601,
+    2147485699, 2149580865, 2149580930, 2150105603, 2174771203, 2955673606, 2955673666, 2955675651, 3022848002,
+    3064832003, 3140403203, 3224371394, 3224404002, 3325132802, 3761766418, 81, 176, 416, 770, 1041, 2112, 5124,
+    16385, 65604, 393216, 393472, 524802, 2099202, 4198401, 50380832, 113356800, 201523208, 1612185632,
+    1612185649, 1612187651, 1746534405, 1746534465, 2150630403, 3223323650, 3224371232, 3224371267, 3224379394,
+    3224436802, 3493068818, 3677798403, 70, 388, 448, 2066, 16408, 131204, 1049602, 4198402, 6297601, 8396801,
+    25190416, 117555200, 369459200, 403046416, 1074790529, 1612185761, 1612189701, 1780121601, 1813708929,
+    1880883457, 2149580839, 2149581331, 2151684099, 2162176003, 2686976067, 3090022401, 3224371466, 3224502402,
+    3274752002, 3627418626, 69, 84, 131, 200, 1538, 4116, 16388, 32784, 32808, 196672, 262404, 4198404, 8396802,
+    12595202, 12595208, 16793601, 109158400, 806092832, 1477836803, 1611661825, 1612185697, 1612185733,
+    1612193801, 1880883209, 2149580883, 2149580929, 2149581058, 2149597187, 2153779203, 2686976387, 2955673610,
+    2955673615, 2955673665, 3022848001, 3056435219, 3224371242, 3224633602, 3627417601, 3761766434, 76, 82, 352,
+    772, 832, 1057, 2176, 4128, 8216, 8224, 16386, 65608, 524804, 786944, 3148801, 6297604, 8396804, 25190404,
+    33587201, 1612185621, 1612185664, 1612202001, 1746534409, 2148535299, 2157977603, 2955673609, 2955674626,
+    3221228546, 3222276098, 3224371264, 3224371331, 3224896002, 3249561602, 3493068834, 3677798400, 134, 161,
+    392, 896, 2082, 32832, 131208, 786432, 1048576, 1049604, 3148802, 6297602, 8396808, 16793604, 50380808,
+    58777600, 67174401, 184729600, 1477836833, 1612185619, 1612218401, 1712947201, 1813709057, 2149580871,
+    2149581347, 2166374403, 2888499202, 2955673627, 2955675649, 3048038403, 3224371474, 3627417650, 3677798406,
+    73, 133, 259, 1540, 4132, 10248, 32816, 262408, 393344, 1574401, 2099204, 12595204, 16793602, 16793608,
+    54579200, 100761616, 134348801, 1477836805, 1545011201, 1611138049, 1612185737, 1612193793, 1612251201,
+    1880883217, 2149581057, 2183168003, 2955411715, 2955673618, 2955673683, 2955677699, 3022848019, 3056435235,
+    3090022435, 3224371238, 3224372738, 3226474498, 3236966402, 3761766466, 74, 140, 704, 776, 1089, 1664, 2304,
+    3076, 4160, 8232, 10240, 32769, 65616, 524808, 1573888, 16793616, 25190408, 33587202, 33587208, 56678400,
+    201523232, 268697601, 1511424001, 1610614273, 1612316801, 1662566401, 1746534417, 2149580963, 2149583875,
+    2216755203, 2955673651, 3022848035, 3090022407, 3157196803, 3224371282, 3224371328, 3224372482, 3224387586,
+    3228569602, 3627417604, 3627417635, 3627417698, 162, 168, 262, 400, 1792, 2114, 16432, 65568, 131216, 787201,
+    1049608, 29388800, 33587216, 50380816, 67174402, 92364800, 403046464, 537395201, 1612185635, 1612185641,
+    1612448001, 1813709313, 2149580875, 2149580935, 2149581379, 2149583363, 2151155203, 2283929603, 2888499201,
+    2955673671, 2955677703, 3022848007, 3090022531, 3123609603, 3223848450, 3224371490, 3232768002, 3627417607,
+    3627419650, 3694592003, 137, 152, 261, 321, 515, 1544, 4164, 6145, 262416, 786688, 1572864, 1574402, 2099208,
+    27289600, 33587232, 67174416, 100761632, 134348802, 806092928, 1477836809, 1477837313, 1612185745,
+    1612186369, 1637376001, 1880883233, 2149613571, 2418278403, 2955149827, 2955673617, 2955673634, 2955681803,
+    3056435267, 3224371270, 3241164802, 3661004803, 3963289603, 138, 268, 784, 1153, 1408, 4224, 8264, 32770,
+    32776, 65632, 65664, 393601, 524816, 3147776, 3148804, 4198408, 33587204, 67174432, 201523264, 268697602,
+    1612185856, 1612186241, 2150368003, 2913689603, 2955673623, 2955690003, 3039641603, 3090022411, 3224371715,
+    3257958402, 3493068994, 3627417632, 164, 518, 2178, 5121, 16448, 16464, 20496, 131232, 787202, 1049616,
+    6297608, 14694400, 46182400, 67174404, 67174464, 134348832, 403046528, 537395202, 1074791425, 1612185637,
+    1612185667, 1612187137, 1613237249, 1614284801, 1624780801, 1813709825, 2149580939, 2149581063, 2149581123,
+    2149586947, 2686976515, 2888499219, 2954887939, 2955673675, 2955706403, 3022848011, 3224371362, 3224374274,
+    3291545602, 3627286658, 3627417611, 3627417614, 3694592000, 145, 265, 280, 322, 517, 1552, 3080, 4228, 6152,
+    32864, 196801, 262432, 1573376, 1574404, 2097152, 2099216, 12595216, 13644800, 134348804, 134348864,
+    806093056, 1074790402, 1444249601, 1477836817, 1612185681, 1612201985, 1616384001, 1813708802, 1838899200,
+    2149581570, 2149581825, 2149583873, 2149974403, 2955673633, 2955681795, 2955739203, 3056435331, 3224371274,
+    3224371334, 3358720002, 3627417608, 3627417642, 3627418627, 3661004800, 3677798410, 3679901698, 3686195202,
+    3761766658, 3963289600, 266, 336, 524, 641, 800, 3328, 4352, 5125, 8256, 8328, 10250, 12289, 20500, 32772,
+    41000, 65537, 82000, 131136, 164000, 328000, 393602, 524832, 656000, 1312000, 2624000, 3148808, 4198416,
+    5248000, 10496000, 20992000, 25190432, 28339200, 41984000, 83968000, 134348928, 167936000, 268697604,
+    268697664, 335872000, 671744000, 1343488000, 1611924225, 1612186112, 1618483201, 1620582401, 1813708816,
+    2149583361, 2955673987, 2955804803, 3006054403, 3090022419, 3224371712, 3224403970, 3493069058, 3627417626,
+    3627419648, 3681996802, 3719782402, 148, 304, 2306, 3584, 12290, 16528, 98401, 131264, 787204, 1049632,
+    3145728, 6297616, 8396816, 23091200, 50380864, 67174408, 268697728, 1074790785, 1612185669, 1813708825 };
diff --git a/src/erasure-code/jerasure/jerasure/src/galois.c b/src/erasure-code/jerasure/jerasure/src/galois.c
new file mode 100644
index 00000000..82702db2
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/galois.c
@@ -0,0 +1,365 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+
+#include "galois.h"
+
+#define MAX_GF_INSTANCES 64
+gf_t *gfp_array[MAX_GF_INSTANCES] = { 0 };
+int  gfp_is_composite[MAX_GF_INSTANCES] = { 0 };
+
+gf_t *galois_get_field_ptr(int w)
+{
+  if (gfp_array[w] != NULL) {
+    return gfp_array[w];
+  }
+
+  return NULL;
+}
+
+gf_t* galois_init_field(int w,
+                        int mult_type,
+                        int region_type,
+                        int divide_type,
+                        uint64_t prim_poly,
+                        int arg1,
+                        int arg2)
+{
+  int scratch_size;
+  void *scratch_memory;
+  gf_t *gfp;
+
+  if (w <= 0 || w > 32) {
+    fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
+    assert(0);
+  }
+
+  gfp = (gf_t *) malloc(sizeof(gf_t));
+  if (!gfp) {
+    fprintf(stderr, "ERROR -- cannot allocate memory for Galois field w=%d\n", w);
+    assert(0);
+  }
+
+  scratch_size = gf_scratch_size(w, mult_type, region_type, divide_type, arg1, arg2);
+  if (!scratch_size) {
+    fprintf(stderr, "ERROR -- cannot get scratch size for base field w=%d\n", w);
+    assert(0);
+  }
+
+  scratch_memory = malloc(scratch_size);
+  if (!scratch_memory) {
+    fprintf(stderr, "ERROR -- cannot get scratch memory for base field w=%d\n", w);
+    assert(0);
+  }
+
+  if(!gf_init_hard(gfp,
+                   w, 
+                   mult_type, 
+                   region_type, 
+                   divide_type, 
+                   prim_poly, 
+                   arg1, 
+                   arg2, 
+                   NULL, 
+                   scratch_memory))
+  {
+    fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
+    assert(0);
+  }
+
+  gfp_is_composite[w] = 0;
+  return gfp;
+}
+
+gf_t* galois_init_composite_field(int w,
+                                int region_type,
+                                int divide_type,
+                                int degree,
+                                gf_t* base_gf)
+{
+  int scratch_size;
+  void *scratch_memory;
+  gf_t *gfp;
+  
+  if (w <= 0 || w > 32) {
+    fprintf(stderr, "ERROR -- cannot init composite field for w=%d\n", w);
+    assert(0);
+  }
+  
+  gfp = (gf_t *) malloc(sizeof(gf_t));
+  if (!gfp) {
+    fprintf(stderr, "ERROR -- cannot allocate memory for Galois field w=%d\n", w);
+    assert(0);
+  }
+
+  scratch_size = gf_scratch_size(w, GF_MULT_COMPOSITE, region_type, divide_type, degree, 0);
+  if (!scratch_size) {
+    fprintf(stderr, "ERROR -- cannot get scratch size for composite field w=%d\n", w);
+    assert(0);
+  }
+
+  scratch_memory = malloc(scratch_size);
+  if (!scratch_memory) {
+    fprintf(stderr, "ERROR -- cannot get scratch memory for composite field w=%d\n", w);
+    assert(0);
+  }
+
+  if(!gf_init_hard(gfp,
+                   w,
+                   GF_MULT_COMPOSITE,
+                   region_type,
+                   divide_type,
+                   0, 
+                   degree, 
+                   0, 
+                   base_gf,
+                   scratch_memory))
+  {
+    fprintf(stderr, "ERROR -- cannot init default composite field for w=%d\n", w);
+    assert(0);
+  }
+  gfp_is_composite[w] = 1;
+  return gfp;
+}
+
+int galois_init_default_field(int w)
+{
+  if (gfp_array[w] == NULL) {
+    gfp_array[w] = (gf_t*)malloc(sizeof(gf_t));
+    if(gfp_array[w] == NULL)
+      return ENOMEM;
+    if (!gf_init_easy(gfp_array[w], w))
+      return EINVAL;
+  }
+  return 0;
+}
+
+static void galois_init(int w)
+{
+  if (w <= 0 || w > 32) {
+    fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
+    assert(0);
+  }
+
+  switch (galois_init_default_field(w)) {
+  case ENOMEM:
+    fprintf(stderr, "ERROR -- cannot allocate memory for Galois field w=%d\n", w);
+    assert(0);
+    break;
+  case EINVAL:
+    fprintf(stderr, "ERROR -- cannot init default Galois field for w=%d\n", w);
+    assert(0);
+    break;
+  }
+}
+
+
+static int is_valid_gf(gf_t *gf, int w)
+{
+  // TODO: I assume we may eventually
+  // want to do w=64 and 128, so w
+  // will be needed to perform this check
+  (void)w;
+
+  if (gf == NULL) {
+    return 0;
+  }
+  if (gf->multiply.w32 == NULL) {
+    return 0;
+  }
+  if (gf->multiply_region.w32 == NULL) {
+    return 0;
+  }
+  if (gf->divide.w32 == NULL) {
+    return 0;
+  }
+  if (gf->inverse.w32 == NULL) {
+    return 0;
+  }
+  if (gf->extract_word.w32 == NULL) {
+    return 0;
+  }
+
+  return 1;
+}
+
+void galois_change_technique(gf_t *gf, int w)
+{
+  if (w <= 0 || w > 32) {
+    fprintf(stderr, "ERROR -- cannot support Galois field for w=%d\n", w);
+    assert(0);
+  }
+
+  if (!is_valid_gf(gf, w)) {
+    fprintf(stderr, "ERROR -- overriding with invalid Galois field for w=%d\n", w);
+    assert(0);
+  }
+
+  if (gfp_array[w] != NULL) {
+    gf_free(gfp_array[w], gfp_is_composite[w]);
+  }
+
+  gfp_array[w] = gf;
+}
+
+int galois_single_multiply(int x, int y, int w)
+{
+  if (x == 0 || y == 0) return 0;
+  
+  if (gfp_array[w] == NULL) {
+    galois_init(w);
+  }
+
+  if (w <= 32) {
+    return gfp_array[w]->multiply.w32(gfp_array[w], x, y);
+  } else {
+    fprintf(stderr, "ERROR -- Galois field not implemented for w=%d\n", w);
+    return 0;
+  }
+}
+
+int galois_single_divide(int x, int y, int w)
+{
+  if (x == 0) return 0;
+  if (y == 0) return -1;
+
+  if (gfp_array[w] == NULL) {
+    galois_init(w);
+  }
+
+  if (w <= 32) {
+    return gfp_array[w]->divide.w32(gfp_array[w], x, y);
+  } else {
+    fprintf(stderr, "ERROR -- Galois field not implemented for w=%d\n", w);
+    return 0;
+  }
+}
+
+void galois_w08_region_multiply(char *region,      /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,        /* Number of bytes in region */
+                                  char *r2,          /* If r2 != NULL, products go here */
+                                  int add)
+{
+  if (gfp_array[8] == NULL) {
+    galois_init(8);
+  }
+  gfp_array[8]->multiply_region.w32(gfp_array[8], region, r2, multby, nbytes, add);
+}
+
+void galois_w16_region_multiply(char *region,      /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,        /* Number of bytes in region */
+                                  char *r2,          /* If r2 != NULL, products go here */
+                                  int add)
+{
+  if (gfp_array[16] == NULL) {
+    galois_init(16);
+  }
+  gfp_array[16]->multiply_region.w32(gfp_array[16], region, r2, multby, nbytes, add);
+}
+
+
+void galois_w32_region_multiply(char *region,      /* Region to multiply */
+                                  int multby,       /* Number to multiply by */
+                                  int nbytes,        /* Number of bytes in region */
+                                  char *r2,          /* If r2 != NULL, products go here */
+                                  int add)
+{
+  if (gfp_array[32] == NULL) {
+    galois_init(32);
+  }
+  gfp_array[32]->multiply_region.w32(gfp_array[32], region, r2, multby, nbytes, add);
+}
+
+void galois_w8_region_xor(void *src, void *dest, int nbytes)
+{
+  if (gfp_array[8] == NULL) {
+    galois_init(8);
+  }
+  gfp_array[8]->multiply_region.w32(gfp_array[32], src, dest, 1, nbytes, 1);
+}
+
+void galois_w16_region_xor(void *src, void *dest, int nbytes)
+{
+  if (gfp_array[16] == NULL) {
+    galois_init(16);
+  }
+  gfp_array[16]->multiply_region.w32(gfp_array[16], src, dest, 1, nbytes, 1);
+}
+
+void galois_w32_region_xor(void *src, void *dest, int nbytes)
+{
+  if (gfp_array[32] == NULL) {
+    galois_init(32);
+  }
+  gfp_array[32]->multiply_region.w32(gfp_array[32], src, dest, 1, nbytes, 1);
+}
+
+void galois_region_xor(char *src, char *dest, int nbytes)
+{
+  if (nbytes >= 16) {
+    galois_w32_region_xor(src, dest, nbytes);
+  } else {
+    int i = 0;
+    for (i = 0; i < nbytes; i++) {
+      *dest ^= *src;
+      dest++;
+      src++;
+    } 
+  }
+}
+
+int galois_inverse(int y, int w)
+{
+  if (y == 0) return -1;
+  return galois_single_divide(1, y, w);
+}
diff --git a/src/erasure-code/jerasure/jerasure/src/jerasure.c b/src/erasure-code/jerasure/jerasure/src/jerasure.c
new file mode 100644
index 00000000..8237bfc1
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/jerasure.c
@@ -0,0 +1,1389 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+#include 
+
+#include "galois.h"
+#include "jerasure.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+static double jerasure_total_xor_bytes = 0;
+static double jerasure_total_gf_bytes = 0;
+static double jerasure_total_memcpy_bytes = 0;
+
+void jerasure_print_matrix(int *m, int rows, int cols, int w)
+{
+  int i, j;
+  int fw;
+  char s[30];
+  unsigned int w2;
+
+  if (w == 32) {
+    fw = 10;
+  } else {
+    w2 = (1 << w);
+    sprintf(s, "%u", w2-1);
+    fw = strlen(s);
+  }
+
+  for (i = 0; i < rows; i++) {
+    for (j = 0; j < cols; j++) {
+      if (j != 0) printf(" ");
+      printf("%*u", fw, m[i*cols+j]); 
+    }
+    printf("\n");
+  }
+}
+
+void jerasure_print_bitmatrix(int *m, int rows, int cols, int w)
+{
+  int i, j;
+
+  for (i = 0; i < rows; i++) {
+    if (i != 0 && i%w == 0) printf("\n");
+    for (j = 0; j < cols; j++) {
+      if (j != 0 && j%w == 0) printf(" ");
+      printf("%d", m[i*cols+j]); 
+    }
+    printf("\n");
+  }
+}
+
+int jerasure_make_decoding_matrix(int k, int m, int w, int *matrix, int *erased, int *decoding_matrix, int *dm_ids)
+{
+  int i, j, *tmpmat;
+
+  j = 0;
+  for (i = 0; j < k; i++) {
+    if (erased[i] == 0) {
+      dm_ids[j] = i;
+      j++;
+    }
+  }
+
+  tmpmat = talloc(int, k*k);
+  if (tmpmat == NULL) { return -1; }
+  for (i = 0; i < k; i++) {
+    if (dm_ids[i] < k) {
+      for (j = 0; j < k; j++) tmpmat[i*k+j] = 0;
+      tmpmat[i*k+dm_ids[i]] = 1;
+    } else {
+      for (j = 0; j < k; j++) {
+        tmpmat[i*k+j] = matrix[(dm_ids[i]-k)*k+j];
+      }
+    }
+  }
+
+  i = jerasure_invert_matrix(tmpmat, decoding_matrix, k, w);
+  free(tmpmat);
+  return i;
+}
+
+/* Internal Routine */
+int jerasure_make_decoding_bitmatrix(int k, int m, int w, int *matrix, int *erased, int *decoding_matrix, int *dm_ids)
+{
+  int i, j, *tmpmat;
+  int index, mindex;
+
+  j = 0;
+  for (i = 0; j < k; i++) {
+    if (erased[i] == 0) {
+      dm_ids[j] = i;
+      j++;
+    }
+  }
+
+  tmpmat = talloc(int, k*k*w*w);
+  if (tmpmat == NULL) { return -1; }
+  for (i = 0; i < k; i++) {
+    if (dm_ids[i] < k) {
+      index = i*k*w*w;
+      for (j = 0; j < k*w*w; j++) tmpmat[index+j] = 0;
+      index = i*k*w*w+dm_ids[i]*w;
+      for (j = 0; j < w; j++) {
+        tmpmat[index] = 1;
+        index += (k*w+1);
+      }
+    } else {
+      index = i*k*w*w;
+      mindex = (dm_ids[i]-k)*k*w*w;
+      for (j = 0; j < k*w*w; j++) {
+        tmpmat[index+j] = matrix[mindex+j];
+      }
+    }
+  }
+
+  i = jerasure_invert_bitmatrix(tmpmat, decoding_matrix, k*w);
+  free(tmpmat);
+  return i;
+}
+
+int jerasure_matrix_decode(int k, int m, int w, int *matrix, int row_k_ones, int *erasures,
+                          char **data_ptrs, char **coding_ptrs, int size)
+{
+  int i, edd, lastdrive;
+  int *tmpids;
+  int *erased, *decoding_matrix, *dm_ids;
+
+  if (w != 8 && w != 16 && w != 32) return -1;
+
+  erased = jerasure_erasures_to_erased(k, m, erasures);
+  if (erased == NULL) return -1;
+
+  /* Find the number of data drives failed */
+
+  lastdrive = k;
+
+  edd = 0;
+  for (i = 0; i < k; i++) {
+    if (erased[i]) {
+      edd++;
+      lastdrive = i;
+    }
+  }
+    
+  /* You only need to create the decoding matrix in the following cases:
+
+      1. edd > 0 and row_k_ones is false.
+      2. edd > 0 and row_k_ones is true and coding device 0 has been erased.
+      3. edd > 1
+
+      We're going to use lastdrive to denote when to stop decoding data.
+      At this point in the code, it is equal to the last erased data device.
+      However, if we can't use the parity row to decode it (i.e. row_k_ones=0
+         or erased[k] = 1, we're going to set it to k so that the decoding 
+         pass will decode all data.
+   */
+
+  if (!row_k_ones || erased[k]) lastdrive = k;
+
+  dm_ids = NULL;
+  decoding_matrix = NULL;
+
+  if (edd > 1 || (edd > 0 && (!row_k_ones || erased[k]))) {
+    dm_ids = talloc(int, k);
+    if (dm_ids == NULL) {
+      free(erased);
+      return -1;
+    }
+
+    decoding_matrix = talloc(int, k*k);
+    if (decoding_matrix == NULL) {
+      free(erased);
+      free(dm_ids);
+      return -1;
+    }
+
+    if (jerasure_make_decoding_matrix(k, m, w, matrix, erased, decoding_matrix, dm_ids) < 0) {
+      free(erased);
+      free(dm_ids);
+      free(decoding_matrix);
+      return -1;
+    }
+  }
+
+  /* Decode the data drives.  
+     If row_k_ones is true and coding device 0 is intact, then only decode edd-1 drives.
+     This is done by stopping at lastdrive.
+     We test whether edd > 0 so that we can exit the loop early if we're done.
+   */
+
+  for (i = 0; edd > 0 && i < lastdrive; i++) {
+    if (erased[i]) {
+      jerasure_matrix_dotprod(k, w, decoding_matrix+(i*k), dm_ids, i, data_ptrs, coding_ptrs, size);
+      edd--;
+    }
+  }
+
+  /* Then if necessary, decode drive lastdrive */
+
+  if (edd > 0) {
+    tmpids = talloc(int, k);
+    for (i = 0; i < k; i++) {
+      tmpids[i] = (i < lastdrive) ? i : i+1;
+    }
+    jerasure_matrix_dotprod(k, w, matrix, tmpids, lastdrive, data_ptrs, coding_ptrs, size);
+    free(tmpids);
+  }
+  
+  /* Finally, re-encode any erased coding devices */
+
+  for (i = 0; i < m; i++) {
+    if (erased[k+i]) {
+      jerasure_matrix_dotprod(k, w, matrix+(i*k), NULL, i+k, data_ptrs, coding_ptrs, size);
+    }
+  }
+
+  free(erased);
+  if (dm_ids != NULL) free(dm_ids);
+  if (decoding_matrix != NULL) free(decoding_matrix);
+
+  return 0;
+}
+
+
+int *jerasure_matrix_to_bitmatrix(int k, int m, int w, int *matrix) 
+{
+  int *bitmatrix;
+  int rowelts, rowindex, colindex, elt, i, j, l, x;
+
+  if (matrix == NULL) { return NULL; }
+
+  bitmatrix = talloc(int, k*m*w*w);
+
+  rowelts = k * w;
+  rowindex = 0;
+
+  for (i = 0; i < m; i++) {
+    colindex = rowindex;
+    for (j = 0; j < k; j++) {
+      elt = matrix[i*k+j];
+      for (x = 0; x < w; x++) {
+        for (l = 0; l < w; l++) {
+          bitmatrix[colindex+x+l*rowelts] = ((elt & (1 << l)) ? 1 : 0);
+        }
+        elt = galois_single_multiply(elt, 2, w);
+      }
+      colindex += w;
+    }
+    rowindex += rowelts * w;
+  }
+  return bitmatrix;
+}
+
+void jerasure_matrix_encode(int k, int m, int w, int *matrix,
+                          char **data_ptrs, char **coding_ptrs, int size)
+{
+  int i;
+  
+  if (w != 8 && w != 16 && w != 32) {
+    fprintf(stderr, "ERROR: jerasure_matrix_encode() and w is not 8, 16 or 32\n");
+    assert(0);
+  }
+
+  for (i = 0; i < m; i++) {
+    jerasure_matrix_dotprod(k, w, matrix+(i*k), NULL, k+i, data_ptrs, coding_ptrs, size);
+  }
+}
+
+void jerasure_bitmatrix_dotprod(int k, int w, int *bitmatrix_row,
+                             int *src_ids, int dest_id,
+                             char **data_ptrs, char **coding_ptrs, int size, int packetsize)
+{
+  int j, sindex, pstarted, index, x, y;
+  char *dptr, *pptr, *bdptr, *bpptr;
+
+  if (size%(w*packetsize) != 0) {
+    fprintf(stderr, "jerasure_bitmatrix_dotprod - size%c(w*packetsize)) must = 0\n", '%');
+    assert(0);
+  }
+
+  bpptr = (dest_id < k) ? data_ptrs[dest_id] : coding_ptrs[dest_id-k];
+
+  for (sindex = 0; sindex < size; sindex += (packetsize*w)) {
+    index = 0;
+    for (j = 0; j < w; j++) {
+      pstarted = 0;
+      pptr = bpptr + sindex + j*packetsize;
+      for (x = 0; x < k; x++) {
+        if (src_ids == NULL) {
+          bdptr = data_ptrs[x];
+        } else if (src_ids[x] < k) {
+          bdptr = data_ptrs[src_ids[x]];
+        } else {
+          bdptr = coding_ptrs[src_ids[x]-k];
+        }
+        for (y = 0; y < w; y++) {
+          if (bitmatrix_row[index]) {
+            dptr = bdptr + sindex + y*packetsize;
+            if (!pstarted) {
+              memcpy(pptr, dptr, packetsize);
+              jerasure_total_memcpy_bytes += packetsize;
+              pstarted = 1;
+            } else {
+              galois_region_xor(dptr, pptr, packetsize);
+              jerasure_total_xor_bytes += packetsize;
+            }
+          }
+          index++;
+        }
+      }
+    }
+  }
+}
+
+void jerasure_do_parity(int k, char **data_ptrs, char *parity_ptr, int size) 
+{
+  int i;
+
+  memcpy(parity_ptr, data_ptrs[0], size);
+  jerasure_total_memcpy_bytes += size;
+  
+  for (i = 1; i < k; i++) {
+    galois_region_xor(data_ptrs[i], parity_ptr, size);
+    jerasure_total_xor_bytes += size;
+  }
+}
+
+int jerasure_invert_matrix(int *mat, int *inv, int rows, int w)
+{
+  int cols, i, j, k, x, rs2;
+  int row_start, tmp, inverse;
+ 
+  cols = rows;
+
+  k = 0;
+  for (i = 0; i < rows; i++) {
+    for (j = 0; j < cols; j++) {
+      inv[k] = (i == j) ? 1 : 0;
+      k++;
+    }
+  }
+
+  /* First -- convert into upper triangular  */
+  for (i = 0; i < cols; i++) {
+    row_start = cols*i;
+
+    /* Swap rows if we ave a zero i,i element.  If we can't swap, then the 
+       matrix was not invertible  */
+
+    if (mat[row_start+i] == 0) { 
+      for (j = i+1; j < rows && mat[cols*j+i] == 0; j++) ;
+      if (j == rows) return -1;
+      rs2 = j*cols;
+      for (k = 0; k < cols; k++) {
+        tmp = mat[row_start+k];
+        mat[row_start+k] = mat[rs2+k];
+        mat[rs2+k] = tmp;
+        tmp = inv[row_start+k];
+        inv[row_start+k] = inv[rs2+k];
+        inv[rs2+k] = tmp;
+      }
+    }
+ 
+    /* Multiply the row by 1/element i,i  */
+    tmp = mat[row_start+i];
+    if (tmp != 1) {
+      inverse = galois_single_divide(1, tmp, w);
+      for (j = 0; j < cols; j++) { 
+        mat[row_start+j] = galois_single_multiply(mat[row_start+j], inverse, w);
+        inv[row_start+j] = galois_single_multiply(inv[row_start+j], inverse, w);
+      }
+    }
+
+    /* Now for each j>i, add A_ji*Ai to Aj  */
+    k = row_start+i;
+    for (j = i+1; j != cols; j++) {
+      k += cols;
+      if (mat[k] != 0) {
+        if (mat[k] == 1) {
+          rs2 = cols*j;
+          for (x = 0; x < cols; x++) {
+            mat[rs2+x] ^= mat[row_start+x];
+            inv[rs2+x] ^= inv[row_start+x];
+          }
+        } else {
+          tmp = mat[k];
+          rs2 = cols*j;
+          for (x = 0; x < cols; x++) {
+            mat[rs2+x] ^= galois_single_multiply(tmp, mat[row_start+x], w);
+            inv[rs2+x] ^= galois_single_multiply(tmp, inv[row_start+x], w);
+          }
+        }
+      }
+    }
+  }
+
+  /* Now the matrix is upper triangular.  Start at the top and multiply down  */
+
+  for (i = rows-1; i >= 0; i--) {
+    row_start = i*cols;
+    for (j = 0; j < i; j++) {
+      rs2 = j*cols;
+      if (mat[rs2+i] != 0) {
+        tmp = mat[rs2+i];
+        mat[rs2+i] = 0; 
+        for (k = 0; k < cols; k++) {
+          inv[rs2+k] ^= galois_single_multiply(tmp, inv[row_start+k], w);
+        }
+      }
+    }
+  }
+  return 0;
+}
+
+int jerasure_invertible_matrix(int *mat, int rows, int w)
+{
+  int cols, i, j, k, x, rs2;
+  int row_start, tmp, inverse;
+ 
+  cols = rows;
+
+  /* First -- convert into upper triangular  */
+  for (i = 0; i < cols; i++) {
+    row_start = cols*i;
+
+    /* Swap rows if we ave a zero i,i element.  If we can't swap, then the 
+       matrix was not invertible  */
+
+    if (mat[row_start+i] == 0) { 
+      for (j = i+1; j < rows && mat[cols*j+i] == 0; j++) ;
+      if (j == rows) return 0;
+      rs2 = j*cols;
+      for (k = 0; k < cols; k++) {
+        tmp = mat[row_start+k];
+        mat[row_start+k] = mat[rs2+k];
+        mat[rs2+k] = tmp;
+      }
+    }
+ 
+    /* Multiply the row by 1/element i,i  */
+    tmp = mat[row_start+i];
+    if (tmp != 1) {
+      inverse = galois_single_divide(1, tmp, w);
+      for (j = 0; j < cols; j++) { 
+        mat[row_start+j] = galois_single_multiply(mat[row_start+j], inverse, w);
+      }
+    }
+
+    /* Now for each j>i, add A_ji*Ai to Aj  */
+    k = row_start+i;
+    for (j = i+1; j != cols; j++) {
+      k += cols;
+      if (mat[k] != 0) {
+        if (mat[k] == 1) {
+          rs2 = cols*j;
+          for (x = 0; x < cols; x++) {
+            mat[rs2+x] ^= mat[row_start+x];
+          }
+        } else {
+          tmp = mat[k];
+          rs2 = cols*j;
+          for (x = 0; x < cols; x++) {
+            mat[rs2+x] ^= galois_single_multiply(tmp, mat[row_start+x], w);
+          }
+        }
+      }
+    }
+  }
+  return 1;
+}
+
+/* Converts a list-style version of the erasures into an array of k+m elements
+   where the element = 1 if the index has been erased, and zero otherwise */
+
+int *jerasure_erasures_to_erased(int k, int m, int *erasures)
+{
+  int td;
+  int t_non_erased;
+  int *erased;
+  int i;
+
+  td = k+m;
+  erased = talloc(int, td);
+  if (erased == NULL) return NULL;
+  t_non_erased = td;
+
+  for (i = 0; i < td; i++) erased[i] = 0;
+
+  for (i = 0; erasures[i] != -1; i++) {
+    if (erased[erasures[i]] == 0) {
+      erased[erasures[i]] = 1;
+      t_non_erased--;
+      if (t_non_erased < k) {
+        free(erased);
+        return NULL;
+      }
+    }
+  }
+  return erased;
+}
+  
+void jerasure_free_schedule(int **schedule)
+{
+  int i;
+
+  for (i = 0; schedule[i][0] >= 0; i++) free(schedule[i]);
+  free(schedule[i]);
+  free(schedule);
+}
+
+void jerasure_free_schedule_cache(int k, int m, int ***cache)
+{
+  int e1, e2;
+
+  if (m != 2) {
+    fprintf(stderr, "jerasure_free_schedule_cache(): m must equal 2\n");
+    assert(0);
+  }
+
+  for (e1 = 0; e1 < k+m; e1++) {
+    for (e2 = 0; e2 < e1; e2++) {
+      jerasure_free_schedule(cache[e1*(k+m)+e2]);
+    }
+    jerasure_free_schedule(cache[e1*(k+m)+e1]);
+  }
+  free(cache);
+}
+
+void jerasure_matrix_dotprod(int k, int w, int *matrix_row,
+                          int *src_ids, int dest_id,
+                          char **data_ptrs, char **coding_ptrs, int size)
+{
+  int init;
+  char *dptr, *sptr;
+  int i;
+
+  if (w != 1 && w != 8 && w != 16 && w != 32) {
+    fprintf(stderr, "ERROR: jerasure_matrix_dotprod() called and w is not 1, 8, 16 or 32\n");
+    assert(0);
+  }
+
+  init = 0;
+
+  dptr = (dest_id < k) ? data_ptrs[dest_id] : coding_ptrs[dest_id-k];
+
+  /* First copy or xor any data that does not need to be multiplied by a factor */
+
+  for (i = 0; i < k; i++) {
+    if (matrix_row[i] == 1) {
+      if (src_ids == NULL) {
+        sptr = data_ptrs[i];
+      } else if (src_ids[i] < k) {
+        sptr = data_ptrs[src_ids[i]];
+      } else {
+        sptr = coding_ptrs[src_ids[i]-k];
+      }
+      if (init == 0) {
+        memcpy(dptr, sptr, size);
+        jerasure_total_memcpy_bytes += size;
+        init = 1;
+      } else {
+        galois_region_xor(sptr, dptr, size);
+        jerasure_total_xor_bytes += size;
+      }
+    }
+  }
+
+  /* Now do the data that needs to be multiplied by a factor */
+
+  for (i = 0; i < k; i++) {
+    if (matrix_row[i] != 0 && matrix_row[i] != 1) {
+      if (src_ids == NULL) {
+        sptr = data_ptrs[i];
+      } else if (src_ids[i] < k) {
+        sptr = data_ptrs[src_ids[i]];
+      } else {
+        sptr = coding_ptrs[src_ids[i]-k];
+      }
+      switch (w) {
+        case 8:  galois_w08_region_multiply(sptr, matrix_row[i], size, dptr, init); break;
+        case 16: galois_w16_region_multiply(sptr, matrix_row[i], size, dptr, init); break;
+        case 32: galois_w32_region_multiply(sptr, matrix_row[i], size, dptr, init); break;
+      }
+      jerasure_total_gf_bytes += size;
+      init = 1;
+    }
+  }
+}
+
+
+int jerasure_bitmatrix_decode(int k, int m, int w, int *bitmatrix, int row_k_ones, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize)
+{
+  int i;
+  int *erased;
+  int *decoding_matrix;
+  int *dm_ids;
+  int edd, *tmpids, lastdrive;
+  
+  erased = jerasure_erasures_to_erased(k, m, erasures);
+  if (erased == NULL) return -1;
+
+  /* See jerasure_matrix_decode for the logic of this routine.  This one works just like
+     it, but calls the bitmatrix ops instead */
+
+  lastdrive = k;
+    
+  edd = 0;
+  for (i = 0; i < k; i++) {
+    if (erased[i]) {
+      edd++;
+      lastdrive = i;
+    } 
+  }
+
+  if (row_k_ones != 1 || erased[k]) lastdrive = k;
+  
+  dm_ids = NULL;
+  decoding_matrix = NULL;
+  
+  if (edd > 1 || (edd > 0 && (row_k_ones != 1 || erased[k]))) {
+
+    dm_ids = talloc(int, k);
+    if (dm_ids == NULL) {
+      free(erased);
+      return -1;
+    }
+  
+    decoding_matrix = talloc(int, k*k*w*w);
+    if (decoding_matrix == NULL) {
+      free(erased);
+      free(dm_ids);
+      return -1;
+    }
+  
+    if (jerasure_make_decoding_bitmatrix(k, m, w, bitmatrix, erased, decoding_matrix, dm_ids) < 0) {
+      free(erased);
+      free(dm_ids);
+      free(decoding_matrix);
+      return -1;
+    }
+  }
+
+  for (i = 0; edd > 0 && i < lastdrive; i++) {
+    if (erased[i]) {
+      jerasure_bitmatrix_dotprod(k, w, decoding_matrix+i*k*w*w, dm_ids, i, data_ptrs, coding_ptrs, size, packetsize);
+      edd--;
+    }
+  }
+
+  if (edd > 0) {
+    tmpids = talloc(int, k);
+    for (i = 0; i < k; i++) {
+      tmpids[i] = (i < lastdrive) ? i : i+1;
+    }
+    jerasure_bitmatrix_dotprod(k, w, bitmatrix, tmpids, lastdrive, data_ptrs, coding_ptrs, size, packetsize);
+    free(tmpids);
+  }
+
+  for (i = 0; i < m; i++) {
+    if (erased[k+i]) {
+      jerasure_bitmatrix_dotprod(k, w, bitmatrix+i*k*w*w, NULL, k+i, data_ptrs, coding_ptrs, size, packetsize);
+    }
+  }
+
+  free(erased);
+  if (dm_ids != NULL) free(dm_ids);
+  if (decoding_matrix != NULL) free(decoding_matrix);
+
+  return 0;
+}
+
+static char **set_up_ptrs_for_scheduled_decoding(int k, int m, int *erasures, char **data_ptrs, char **coding_ptrs)
+{
+  int ddf, cdf;
+  int *erased;
+  char **ptrs;
+  int i, j, x;
+
+  ddf = 0;
+  cdf = 0;
+  for (i = 0; erasures[i] != -1; i++) {
+    if (erasures[i] < k) ddf++; else cdf++;
+  }
+  
+  erased = jerasure_erasures_to_erased(k, m, erasures);
+  if (erased == NULL) return NULL;
+
+  /* Set up ptrs.  It will be as follows:
+
+       - If data drive i has not failed, then ptrs[i] = data_ptrs[i].
+       - If data drive i has failed, then ptrs[i] = coding_ptrs[j], where j is the 
+            lowest unused non-failed coding drive.
+       - Elements k to k+ddf-1 are data_ptrs[] of the failed data drives.
+       - Elements k+ddf to k+ddf+cdf-1 are coding_ptrs[] of the failed data drives.
+
+       The array row_ids contains the ids of ptrs.
+       The array ind_to_row_ids contains the row_id of drive i.
+  
+       However, we're going to set row_ids and ind_to_row in a different procedure.
+   */
+         
+  ptrs = talloc(char *, k+m);
+
+  j = k;
+  x = k;
+  for (i = 0; i < k; i++) {
+    if (erased[i] == 0) {
+      ptrs[i] = data_ptrs[i];
+    } else {
+      while (erased[j]) j++;
+      ptrs[i] = coding_ptrs[j-k];
+      j++;
+      ptrs[x] = data_ptrs[i];
+      x++;
+    }
+  }
+  for (i = k; i < k+m; i++) {
+    if (erased[i]) {
+      ptrs[x] = coding_ptrs[i-k];
+      x++;
+    }
+  }
+  free(erased);
+  return ptrs;
+}
+
+static int set_up_ids_for_scheduled_decoding(int k, int m, int *erasures, int *row_ids, int *ind_to_row)
+{
+  int ddf, cdf;
+  int *erased;
+  int i, j, x;
+
+  ddf = 0;
+  cdf = 0;
+  for (i = 0; erasures[i] != -1; i++) {
+    if (erasures[i] < k) ddf++; else cdf++;
+  }
+  
+  erased = jerasure_erasures_to_erased(k, m, erasures);
+  if (erased == NULL) return -1;
+
+  /* See set_up_ptrs_for_scheduled_decoding for how these are set */
+
+  j = k;
+  x = k;
+  for (i = 0; i < k; i++) {
+    if (erased[i] == 0) {
+      row_ids[i] = i;
+      ind_to_row[i] = i;
+    } else {
+      while (erased[j]) j++;
+      row_ids[i] = j;
+      ind_to_row[j] = i;
+      j++;
+      row_ids[x] = i;
+      ind_to_row[i] = x;
+      x++;
+    }
+  }
+  for (i = k; i < k+m; i++) {
+    if (erased[i]) {
+      row_ids[x] = i;
+      ind_to_row[i] = x;
+      x++;
+    }
+  }
+  free(erased);
+  return 0;
+}
+
+static int **jerasure_generate_decoding_schedule(int k, int m, int w, int *bitmatrix, int *erasures, int smart)
+{
+  int i, j, x, drive, y, index, z;
+  int *decoding_matrix, *inverse, *real_decoding_matrix;
+  int *ptr;
+  int *row_ids;
+  int *ind_to_row;
+  int ddf, cdf;
+  int **schedule;
+  int *b1, *b2;
+ 
+ /* First, figure out the number of data drives that have failed, and the
+    number of coding drives that have failed: ddf and cdf */
+
+  ddf = 0;
+  cdf = 0;
+  for (i = 0; erasures[i] != -1; i++) {
+    if (erasures[i] < k) ddf++; else cdf++;
+  }
+  
+  row_ids = talloc(int, k+m);
+  ind_to_row = talloc(int, k+m);
+
+  if (set_up_ids_for_scheduled_decoding(k, m, erasures, row_ids, ind_to_row) < 0) return NULL;
+
+  /* Now, we're going to create one decoding matrix which is going to 
+     decode everything with one call.  The hope is that the scheduler
+     will do a good job.    This matrix has w*e rows, where e is the
+     number of erasures (ddf+cdf) */
+
+  real_decoding_matrix = talloc(int, k*w*(cdf+ddf)*w);
+
+  /* First, if any data drives have failed, then initialize the first
+     ddf*w rows of the decoding matrix from the standard decoding
+     matrix inversion */
+
+  if (ddf > 0) {
+    
+    decoding_matrix = talloc(int, k*k*w*w);
+    ptr = decoding_matrix;
+    for (i = 0; i < k; i++) {
+      if (row_ids[i] == i) {
+        bzero(ptr, k*w*w*sizeof(int));
+        for (x = 0; x < w; x++) {
+          ptr[x+i*w+x*k*w] = 1;
+        } 
+      } else {
+        memcpy(ptr, bitmatrix+k*w*w*(row_ids[i]-k), k*w*w*sizeof(int));
+      }
+      ptr += (k*w*w);
+    }
+    inverse = talloc(int, k*k*w*w);
+    jerasure_invert_bitmatrix(decoding_matrix, inverse, k*w);
+
+/*    printf("\nMatrix to invert\n");
+    jerasure_print_bitmatrix(decoding_matrix, k*w, k*w, w);
+    printf("\n");
+    printf("\nInverse\n");
+    jerasure_print_bitmatrix(inverse, k*w, k*w, w);
+    printf("\n"); */
+
+    free(decoding_matrix);
+    ptr = real_decoding_matrix;
+    for (i = 0; i < ddf; i++) {
+      memcpy(ptr, inverse+k*w*w*row_ids[k+i], sizeof(int)*k*w*w);
+      ptr += (k*w*w);
+    }
+    free(inverse);
+  } 
+
+  /* Next, here comes the hard part.  For each coding node that needs
+     to be decoded, you start by putting its rows of the distribution
+     matrix into the decoding matrix.  If there were no failed data
+     nodes, then you're done.  However, if there have been failed
+     data nodes, then you need to modify the columns that correspond
+     to the data nodes.  You do that by first zeroing them.  Then
+     whereever there is a one in the distribution matrix, you XOR
+     in the corresponding row from the failed data node's entry in
+     the decoding matrix.  The whole process kind of makes my head
+     spin, but it works.
+   */
+
+  for (x = 0; x < cdf; x++) {
+    drive = row_ids[x+ddf+k]-k;
+    ptr = real_decoding_matrix + k*w*w*(ddf+x);
+    memcpy(ptr, bitmatrix+drive*k*w*w, sizeof(int)*k*w*w);
+
+    for (i = 0; i < k; i++) {
+      if (row_ids[i] != i) {
+        for (j = 0; j < w; j++) {
+          bzero(ptr+j*k*w+i*w, sizeof(int)*w);
+        }
+      }  
+    }
+
+    /* There's the yucky part */
+
+    index = drive*k*w*w;
+    for (i = 0; i < k; i++) {
+      if (row_ids[i] != i) {
+        b1 = real_decoding_matrix+(ind_to_row[i]-k)*k*w*w;
+        for (j = 0; j < w; j++) {
+          b2 = ptr + j*k*w;
+          for (y = 0; y < w; y++) {
+            if (bitmatrix[index+j*k*w+i*w+y]) {
+              for (z = 0; z < k*w; z++) {
+                b2[z] = b2[z] ^ b1[z+y*k*w];
+              }
+            }
+          }
+        }
+      }  
+    }
+  }
+
+/*
+  printf("\n\nReal Decoding Matrix\n\n");
+  jerasure_print_bitmatrix(real_decoding_matrix, (ddf+cdf)*w, k*w, w);
+  printf("\n"); */
+  if (smart) {
+    schedule = jerasure_smart_bitmatrix_to_schedule(k, ddf+cdf, w, real_decoding_matrix);
+  } else {
+    schedule = jerasure_dumb_bitmatrix_to_schedule(k, ddf+cdf, w, real_decoding_matrix);
+  }
+  free(row_ids);
+  free(ind_to_row);
+  free(real_decoding_matrix);
+  return schedule;
+}
+
+int jerasure_schedule_decode_lazy(int k, int m, int w, int *bitmatrix, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize, 
+                            int smart)
+{
+  int i, tdone;
+  char **ptrs;
+  int **schedule;
+ 
+  ptrs = set_up_ptrs_for_scheduled_decoding(k, m, erasures, data_ptrs, coding_ptrs);
+  if (ptrs == NULL) return -1;
+
+  schedule = jerasure_generate_decoding_schedule(k, m, w, bitmatrix, erasures, smart);
+  if (schedule == NULL) {
+    free(ptrs);
+    return -1;
+  }
+
+  for (tdone = 0; tdone < size; tdone += packetsize*w) {
+  jerasure_do_scheduled_operations(ptrs, schedule, packetsize);
+    for (i = 0; i < k+m; i++) ptrs[i] += (packetsize*w);
+  }
+
+  jerasure_free_schedule(schedule);
+  free(ptrs);
+
+  return 0;
+}
+
+int jerasure_schedule_decode_cache(int k, int m, int w, int ***scache, int *erasures,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize)
+{
+  int i, tdone;
+  char **ptrs;
+  int **schedule;
+  int index;
+ 
+  if (erasures[1] == -1) {
+    index = erasures[0]*(k+m) + erasures[0];
+  } else if (erasures[2] == -1) {
+    index = erasures[0]*(k+m) + erasures[1];
+  } else {
+    return -1;
+  }
+
+  schedule = scache[index];
+
+  ptrs = set_up_ptrs_for_scheduled_decoding(k, m, erasures, data_ptrs, coding_ptrs);
+  if (ptrs == NULL) return -1;
+
+
+  for (tdone = 0; tdone < size; tdone += packetsize*w) {
+  jerasure_do_scheduled_operations(ptrs, schedule, packetsize);
+    for (i = 0; i < k+m; i++) ptrs[i] += (packetsize*w);
+  }
+
+  free(ptrs);
+
+  return 0;
+}
+
+/* This only works when m = 2 */
+
+int ***jerasure_generate_schedule_cache(int k, int m, int w, int *bitmatrix, int smart)
+{
+  int ***scache;
+  int erasures[3];
+  int e1, e2;
+ 
+  /* Ok -- this is yucky, but it's how I'm doing it.  You will make an index out
+     of erasures, which will be  e1*(k+m)+(e2).  If there is no e2, then e2 = e1.
+     Isn't that clever and confusing.  Sorry.
+
+     We're not going to worry about ordering -- in other words, the schedule for
+     e1,e2 will be the same as e2,e1.  They will have the same pointer -- the 
+     schedule will not be duplicated. */
+
+  if (m != 2) return NULL;
+
+  scache = talloc(int **, (k+m)*(k+m+1));
+  if (scache == NULL) return NULL;
+  
+  for (e1 = 0; e1 < k+m; e1++) {
+    erasures[0] = e1;
+    for (e2 = 0; e2 < e1; e2++) {
+      erasures[1] = e2;
+      erasures[2] = -1;
+      scache[e1*(k+m)+e2] = jerasure_generate_decoding_schedule(k, m, w, bitmatrix, erasures, smart);
+      scache[e2*(k+m)+e1] = scache[e1*(k+m)+e2];
+    }
+    erasures[1] = -1;
+    scache[e1*(k+m)+e1] = jerasure_generate_decoding_schedule(k, m, w, bitmatrix, erasures, smart);
+  }
+  return scache;
+
+}
+
+int jerasure_invert_bitmatrix(int *mat, int *inv, int rows)
+{
+  int cols, i, j, k;
+  int tmp;
+ 
+  cols = rows;
+
+  k = 0;
+  for (i = 0; i < rows; i++) {
+    for (j = 0; j < cols; j++) {
+      inv[k] = (i == j) ? 1 : 0;
+      k++;
+    }
+  }
+
+  /* First -- convert into upper triangular */
+
+  for (i = 0; i < cols; i++) {
+
+    /* Swap rows if we have a zero i,i element.  If we can't swap, then the 
+       matrix was not invertible */
+
+    if ((mat[i*cols+i]) == 0) { 
+      for (j = i+1; j < rows && (mat[j*cols+i]) == 0; j++) ;
+      if (j == rows) return -1;
+      for (k = 0; k < cols; k++) {
+        tmp = mat[i*cols+k]; mat[i*cols+k] = mat[j*cols+k]; mat[j*cols+k] = tmp;
+        tmp = inv[i*cols+k]; inv[i*cols+k] = inv[j*cols+k]; inv[j*cols+k] = tmp;
+      }
+    }
+ 
+    /* Now for each j>i, add A_ji*Ai to Aj */
+    for (j = i+1; j != rows; j++) {
+      if (mat[j*cols+i] != 0) {
+        for (k = 0; k < cols; k++) {
+          mat[j*cols+k] ^= mat[i*cols+k]; 
+          inv[j*cols+k] ^= inv[i*cols+k];
+        }
+      }
+    }
+  }
+
+  /* Now the matrix is upper triangular.  Start at the top and multiply down */
+
+  for (i = rows-1; i >= 0; i--) {
+    for (j = 0; j < i; j++) {
+      if (mat[j*cols+i]) {
+        for (k = 0; k < cols; k++) {
+          mat[j*cols+k] ^= mat[i*cols+k]; 
+          inv[j*cols+k] ^= inv[i*cols+k];
+        }
+      }
+    }
+  } 
+  return 0;
+}
+
+int jerasure_invertible_bitmatrix(int *mat, int rows)
+{
+  int cols, i, j, k;
+  int tmp;
+ 
+  cols = rows;
+
+  /* First -- convert into upper triangular */
+
+  for (i = 0; i < cols; i++) {
+
+    /* Swap rows if we have a zero i,i element.  If we can't swap, then the 
+       matrix was not invertible */
+
+    if ((mat[i*cols+i]) == 0) { 
+      for (j = i+1; j < rows && (mat[j*cols+i]) == 0; j++) ;
+      if (j == rows) return 0;
+      for (k = 0; k < cols; k++) {
+        tmp = mat[i*cols+k]; mat[i*cols+k] = mat[j*cols+k]; mat[j*cols+k] = tmp;
+      }
+    }
+ 
+    /* Now for each j>i, add A_ji*Ai to Aj */
+    for (j = i+1; j != rows; j++) {
+      if (mat[j*cols+i] != 0) {
+        for (k = 0; k < cols; k++) {
+          mat[j*cols+k] ^= mat[i*cols+k]; 
+        }
+      }
+    }
+  }
+  return 1;
+}
+
+  
+int *jerasure_matrix_multiply(int *m1, int *m2, int r1, int c1, int r2, int c2, int w)
+{
+  int *product, i, j, k;
+
+  product = (int *) malloc(sizeof(int)*r1*c2);
+  for (i = 0; i < r1*c2; i++) product[i] = 0;
+
+  for (i = 0; i < r1; i++) {
+    for (j = 0; j < c2; j++) {
+      for (k = 0; k < r2; k++) {
+        product[i*c2+j] ^= galois_single_multiply(m1[i*c1+k], m2[k*c2+j], w);
+      }
+    }
+  }
+  return product;
+}
+
+void jerasure_get_stats(double *fill_in)
+{
+  fill_in[0] = jerasure_total_xor_bytes;
+  fill_in[1] = jerasure_total_gf_bytes;
+  fill_in[2] = jerasure_total_memcpy_bytes;
+  jerasure_total_xor_bytes = 0;
+  jerasure_total_gf_bytes = 0;
+  jerasure_total_memcpy_bytes = 0;
+}
+
+void jerasure_do_scheduled_operations(char **ptrs, int **operations, int packetsize)
+{
+  char *sptr;
+  char *dptr;
+  int op;
+
+  for (op = 0; operations[op][0] >= 0; op++) {
+    sptr = ptrs[operations[op][0]] + operations[op][1]*packetsize;
+    dptr = ptrs[operations[op][2]] + operations[op][3]*packetsize;
+    if (operations[op][4]) {
+/*      printf("%d,%d %d,%d\n", operations[op][0], 
+      operations[op][1], 
+      operations[op][2], 
+      operations[op][3]); 
+      printf("xor(0x%x, 0x%x -> 0x%x, %d)\n", sptr, dptr, dptr, packetsize); */
+      galois_region_xor(sptr, dptr, packetsize);
+      jerasure_total_xor_bytes += packetsize;
+    } else {
+/*      printf("memcpy(0x%x <- 0x%x)\n", dptr, sptr); */
+      memcpy(dptr, sptr, packetsize);
+      jerasure_total_memcpy_bytes += packetsize;
+    }
+  }  
+}
+
+void jerasure_schedule_encode(int k, int m, int w, int **schedule,
+                                   char **data_ptrs, char **coding_ptrs, int size, int packetsize)
+{
+  char **ptr_copy;
+  int i, tdone;
+
+  ptr_copy = talloc(char *, (k+m));
+  for (i = 0; i < k; i++) ptr_copy[i] = data_ptrs[i];
+  for (i = 0; i < m; i++) ptr_copy[i+k] = coding_ptrs[i];
+  for (tdone = 0; tdone < size; tdone += packetsize*w) {
+    jerasure_do_scheduled_operations(ptr_copy, schedule, packetsize);
+    for (i = 0; i < k+m; i++) ptr_copy[i] += (packetsize*w);
+  }
+  free(ptr_copy);
+}
+    
+int **jerasure_dumb_bitmatrix_to_schedule(int k, int m, int w, int *bitmatrix)
+{
+  int **operations;
+  int op;
+  int index, optodo, i, j;
+
+  operations = talloc(int *, k*m*w*w+1);
+  op = 0;
+  
+  index = 0;
+  for (i = 0; i < m*w; i++) {
+    optodo = 0;
+    for (j = 0; j < k*w; j++) {
+      if (bitmatrix[index]) {
+        operations[op] = talloc(int, 5);
+        operations[op][4] = optodo;
+        operations[op][0] = j/w;
+        operations[op][1] = j%w;
+        operations[op][2] = k+i/w;
+        operations[op][3] = i%w;
+        optodo = 1;
+        op++;
+        
+      }
+      index++;
+    }
+  }
+  operations[op] = talloc(int, 5);
+  operations[op][0] = -1;
+  return operations;
+}
+
+int **jerasure_smart_bitmatrix_to_schedule(int k, int m, int w, int *bitmatrix)
+{
+  int **operations;
+  int op;
+  int i, j;
+  int *diff, *from, *b1, *flink, *blink;
+  int *ptr, no, row;
+  int optodo;
+  int bestrow = 0, bestdiff, top;
+
+/*   printf("Scheduling:\n\n");
+  jerasure_print_bitmatrix(bitmatrix, m*w, k*w, w); */
+
+  operations = talloc(int *, k*m*w*w+1);
+  op = 0;
+  
+  diff = talloc(int, m*w);
+  from = talloc(int, m*w);
+  flink = talloc(int, m*w);
+  blink = talloc(int, m*w);
+
+  ptr = bitmatrix;
+
+  bestdiff = k*w+1;
+  top = 0;
+  for (i = 0; i < m*w; i++) {
+    no = 0;
+    for (j = 0; j < k*w; j++) {
+      no += *ptr;
+      ptr++;
+    }
+    diff[i] = no;
+    from[i] = -1;
+    flink[i] = i+1;
+    blink[i] = i-1;
+    if (no < bestdiff) {
+      bestdiff = no;
+      bestrow = i;
+    }
+  }
+
+  flink[m*w-1] = -1;
+  
+  while (top != -1) {
+    row = bestrow;
+    /* printf("Doing row %d - %d from %d\n", row, diff[row], from[row]);  */
+
+    if (blink[row] == -1) {
+      top = flink[row];
+      if (top != -1) blink[top] = -1;
+    } else {
+      flink[blink[row]] = flink[row];
+      if (flink[row] != -1) {
+        blink[flink[row]] = blink[row];
+      }
+    }
+
+    ptr = bitmatrix + row*k*w;
+    if (from[row] == -1) {
+      optodo = 0;
+      for (j = 0; j < k*w; j++) {
+        if (ptr[j]) {
+          operations[op] = talloc(int, 5);
+          operations[op][4] = optodo;
+          operations[op][0] = j/w;
+          operations[op][1] = j%w;
+          operations[op][2] = k+row/w;
+          operations[op][3] = row%w;
+          optodo = 1;
+          op++;
+        }
+      }
+    } else {
+      operations[op] = talloc(int, 5);
+      operations[op][4] = 0;
+      operations[op][0] = k+from[row]/w;
+      operations[op][1] = from[row]%w;
+      operations[op][2] = k+row/w;
+      operations[op][3] = row%w;
+      op++;
+      b1 = bitmatrix + from[row]*k*w;
+      for (j = 0; j < k*w; j++) {
+        if (ptr[j] ^ b1[j]) {
+          operations[op] = talloc(int, 5);
+          operations[op][4] = 1;
+          operations[op][0] = j/w;
+          operations[op][1] = j%w;
+          operations[op][2] = k+row/w;
+          operations[op][3] = row%w;
+          optodo = 1;
+          op++;
+        }
+      }
+    }
+    bestdiff = k*w+1;
+    for (i = top; i != -1; i = flink[i]) {
+      no = 1;
+      b1 = bitmatrix + i*k*w;
+      for (j = 0; j < k*w; j++) no += (ptr[j] ^ b1[j]);
+      if (no < diff[i]) {
+        from[i] = row;
+        diff[i] = no;
+      }
+      if (diff[i] < bestdiff) {
+        bestdiff = diff[i];
+        bestrow = i;
+      }
+    }
+  }
+  
+  operations[op] = talloc(int, 5);
+  operations[op][0] = -1;
+  free(from);
+  free(diff);
+  free(blink);
+  free(flink);
+
+  return operations;
+}
+
+void jerasure_bitmatrix_encode(int k, int m, int w, int *bitmatrix,
+                            char **data_ptrs, char **coding_ptrs, int size, int packetsize)
+{
+  int i;
+
+  if (packetsize%sizeof(long) != 0) {
+    fprintf(stderr, "jerasure_bitmatrix_encode - packetsize(%d) %c sizeof(long) != 0\n", packetsize, '%');
+    assert(0);
+  }
+  if (size%(packetsize*w) != 0) {
+    fprintf(stderr, "jerasure_bitmatrix_encode - size(%d) %c (packetsize(%d)*w(%d))) != 0\n", 
+         size, '%', packetsize, w);
+    assert(0);
+  }
+
+  for (i = 0; i < m; i++) {
+    jerasure_bitmatrix_dotprod(k, w, bitmatrix+i*k*w*w, NULL, k+i, data_ptrs, coding_ptrs, size, packetsize);
+  }
+}
+
+/*
+ * Exported function for use by autoconf to perform quick 
+ * spot-check.
+ */
+int jerasure_autoconf_test()
+{
+  int x = galois_single_multiply(1, 2, 8);
+  if (x != 2) {
+    return -1;
+  }
+  return 0;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure/src/liberation.c b/src/erasure-code/jerasure/jerasure/src/liberation.c
new file mode 100644
index 00000000..11a1c4fe
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/liberation.c
@@ -0,0 +1,262 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+
+#include "galois.h"
+#include "jerasure.h"
+#include "liberation.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+int *liberation_coding_bitmatrix(int k, int w)
+{
+  int *matrix, i, j, index;
+
+  if (k > w) return NULL;
+  matrix = talloc(int, 2*k*w*w);
+  if (matrix == NULL) return NULL;
+  bzero(matrix, sizeof(int)*2*k*w*w);
+  
+  /* Set up identity matrices */
+
+  for(i = 0; i < w; i++) {
+    index = i*k*w+i;
+    for (j = 0; j < k; j++) {
+      matrix[index] = 1;
+      index += w;
+    }
+  }
+
+  /* Set up liberation matrices */
+
+  for (j = 0; j < k; j++) {
+    index = k*w*w+j*w;
+    for (i = 0; i < w; i++) {
+      matrix[index+(j+i)%w] = 1;
+      index += (k*w);
+    }
+    if (j > 0) {
+      i = (j*((w-1)/2))%w;
+      matrix[k*w*w+j*w+i*k*w+(i+j-1)%w] = 1;
+    }
+  }
+  return matrix;
+}
+  
+
+int *liber8tion_coding_bitmatrix(int k)
+{
+  int *matrix, i, j, index;
+  int w;
+
+  w = 8;
+  if (k > w) return NULL;
+  matrix = talloc(int, 2*k*w*w);
+  if (matrix == NULL) return NULL;
+  bzero(matrix, sizeof(int)*2*k*w*w);
+  
+  /* Set up identity matrices */
+
+  for(i = 0; i < w; i++) {
+    index = i*k*w+i;
+    for (j = 0; j < k; j++) {
+      matrix[index] = 1;
+      index += w;
+    }
+  }
+
+  /* Set up liber8tion matrices */
+
+  index = k*w*w;
+
+  if (k == 0) return matrix;
+  matrix[index+0*k*w+0*w+0] = 1;
+  matrix[index+1*k*w+0*w+1] = 1;
+  matrix[index+2*k*w+0*w+2] = 1;
+  matrix[index+3*k*w+0*w+3] = 1;
+  matrix[index+4*k*w+0*w+4] = 1;
+  matrix[index+5*k*w+0*w+5] = 1;
+  matrix[index+6*k*w+0*w+6] = 1;
+  matrix[index+7*k*w+0*w+7] = 1;
+
+  if (k == 1) return matrix;
+  matrix[index+0*k*w+1*w+7] = 1;
+  matrix[index+1*k*w+1*w+3] = 1;
+  matrix[index+2*k*w+1*w+0] = 1;
+  matrix[index+3*k*w+1*w+2] = 1;
+  matrix[index+4*k*w+1*w+6] = 1;
+  matrix[index+5*k*w+1*w+1] = 1;
+  matrix[index+6*k*w+1*w+5] = 1;
+  matrix[index+7*k*w+1*w+4] = 1;
+  matrix[index+4*k*w+1*w+7] = 1;
+
+  if (k == 2) return matrix;
+  matrix[index+0*k*w+2*w+6] = 1;
+  matrix[index+1*k*w+2*w+2] = 1;
+  matrix[index+2*k*w+2*w+4] = 1;
+  matrix[index+3*k*w+2*w+0] = 1;
+  matrix[index+4*k*w+2*w+7] = 1;
+  matrix[index+5*k*w+2*w+3] = 1;
+  matrix[index+6*k*w+2*w+1] = 1;
+  matrix[index+7*k*w+2*w+5] = 1;
+  matrix[index+1*k*w+2*w+3] = 1;
+
+  if (k == 3) return matrix;
+  matrix[index+0*k*w+3*w+2] = 1;
+  matrix[index+1*k*w+3*w+5] = 1;
+  matrix[index+2*k*w+3*w+7] = 1;
+  matrix[index+3*k*w+3*w+6] = 1;
+  matrix[index+4*k*w+3*w+0] = 1;
+  matrix[index+5*k*w+3*w+3] = 1;
+  matrix[index+6*k*w+3*w+4] = 1;
+  matrix[index+7*k*w+3*w+1] = 1;
+  matrix[index+5*k*w+3*w+4] = 1;
+
+  if (k == 4) return matrix;
+  matrix[index+0*k*w+4*w+5] = 1;
+  matrix[index+1*k*w+4*w+6] = 1;
+  matrix[index+2*k*w+4*w+1] = 1;
+  matrix[index+3*k*w+4*w+7] = 1;
+  matrix[index+4*k*w+4*w+2] = 1;
+  matrix[index+5*k*w+4*w+4] = 1;
+  matrix[index+6*k*w+4*w+3] = 1;
+  matrix[index+7*k*w+4*w+0] = 1;
+  matrix[index+2*k*w+4*w+0] = 1;
+
+  if (k == 5) return matrix;
+  matrix[index+0*k*w+5*w+1] = 1;
+  matrix[index+1*k*w+5*w+2] = 1;
+  matrix[index+2*k*w+5*w+3] = 1;
+  matrix[index+3*k*w+5*w+4] = 1;
+  matrix[index+4*k*w+5*w+5] = 1;
+  matrix[index+5*k*w+5*w+6] = 1;
+  matrix[index+6*k*w+5*w+7] = 1;
+  matrix[index+7*k*w+5*w+0] = 1;
+  matrix[index+7*k*w+5*w+2] = 1;
+
+  if (k == 6) return matrix;
+  matrix[index+0*k*w+6*w+3] = 1;
+  matrix[index+1*k*w+6*w+0] = 1;
+  matrix[index+2*k*w+6*w+6] = 1;
+  matrix[index+3*k*w+6*w+5] = 1;
+  matrix[index+4*k*w+6*w+1] = 1;
+  matrix[index+5*k*w+6*w+7] = 1;
+  matrix[index+6*k*w+6*w+4] = 1;
+  matrix[index+7*k*w+6*w+2] = 1;
+  matrix[index+6*k*w+6*w+5] = 1;
+
+  if (k == 7) return matrix;
+  matrix[index+0*k*w+7*w+4] = 1;
+  matrix[index+1*k*w+7*w+7] = 1;
+  matrix[index+2*k*w+7*w+1] = 1;
+  matrix[index+3*k*w+7*w+5] = 1;
+  matrix[index+4*k*w+7*w+3] = 1;
+  matrix[index+5*k*w+7*w+2] = 1;
+  matrix[index+6*k*w+7*w+0] = 1;
+  matrix[index+7*k*w+7*w+6] = 1;
+  matrix[index+3*k*w+7*w+1] = 1;
+
+  return matrix;
+}
+  
+int *blaum_roth_coding_bitmatrix(int k, int w)
+{
+  int *matrix, i, j, index, l, m, p;
+
+  if (k > w) return NULL ;
+
+  matrix = talloc(int, 2*k*w*w);
+  if (matrix == NULL) return NULL;
+  bzero(matrix, sizeof(int)*2*k*w*w);
+  
+  /* Set up identity matrices */
+
+  for(i = 0; i < w; i++) {
+    index = i*k*w+i;
+    for (j = 0; j < k; j++) {
+      matrix[index] = 1;
+      index += w;
+    }
+  }
+
+  /* Set up blaum_roth matrices -- Ignore identity */
+
+  p = w+1;
+  for (j = 0; j < k; j++) {
+    index = k*w*w+j*w;
+    if (j == 0) {
+      for (l = 0; l < w; l++) {
+        matrix[index+l] = 1;
+        index += k*w;
+      }
+    } else {
+      i = j;
+      for (l = 1; l <= w; l++) {
+        if (l != p-i) {
+          m = l+i;
+          if (m >= p) m -= p;
+          m--;
+          matrix[index+m] = 1;
+        } else {
+          matrix[index+i-1] = 1;
+          if (i%2 == 0) {
+            m = i/2;
+          } else {
+            m = (p/2) + 1 + (i/2);
+          }
+          m--;
+          matrix[index+m] = 1;
+        }
+        index += k*w;
+      }
+    }
+  }
+
+  return matrix;
+}
diff --git a/src/erasure-code/jerasure/jerasure/src/reed_sol.c b/src/erasure-code/jerasure/jerasure/src/reed_sol.c
new file mode 100644
index 00000000..72cbff89
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure/src/reed_sol.c
@@ -0,0 +1,302 @@
+/* *
+ * Copyright (c) 2014, James S. Plank and Kevin Greenan
+ * All rights reserved.
+ *
+ * Jerasure - A C/C++ Library for a Variety of Reed-Solomon and RAID-6 Erasure
+ * Coding Techniques
+ *
+ * Revision 2.0: Galois Field backend now links to GF-Complete
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  - Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ *  - Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ *  - Neither the name of the University of Tennessee nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+ * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Jerasure's authors:
+
+   Revision 2.x - 2014: James S. Plank and Kevin M. Greenan
+   Revision 1.2 - 2008: James S. Plank, Scott Simmerman and Catherine D. Schuman.
+   Revision 1.0 - 2007: James S. Plank
+ */
+
+#include 
+#include 
+#include 
+#include 
+
+#include 
+#include "galois.h"
+#include "jerasure.h"
+#include "reed_sol.h"
+
+#define talloc(type, num) (type *) malloc(sizeof(type)*(num))
+
+int *reed_sol_r6_coding_matrix(int k, int w)
+{
+  int *matrix;
+  int i, tmp;
+
+  if (w != 8 && w != 16 && w != 32) return NULL;
+
+  matrix = talloc(int, 2*k);
+  if (matrix == NULL) return NULL;
+
+  for (i = 0; i < k; i++) matrix[i] = 1;
+  matrix[k] = 1;
+  tmp = 1;
+  for (i = 1; i < k; i++) {
+    tmp = galois_single_multiply(tmp, 2, w);
+    matrix[k+i] = tmp;
+  }
+  return matrix;
+}
+
+int *reed_sol_vandermonde_coding_matrix(int k, int m, int w)
+{
+  int i, j;
+  int *vdm, *dist;
+
+  vdm = reed_sol_big_vandermonde_distribution_matrix(k+m, k, w);
+  if (vdm == NULL) return NULL;
+  dist = talloc(int, m*k);
+  if (dist == NULL) {
+    free(vdm);
+    return NULL;
+  }
+
+  i = k*k;
+  for (j = 0; j < m*k; j++) {
+    dist[j] = vdm[i];
+    i++;
+  }
+  free(vdm);
+  return dist;
+}
+
+static int prim08 = -1;
+static gf_t GF08;
+
+void reed_sol_galois_w08_region_multby_2(char *region, int nbytes)
+{
+  if (prim08 == -1) {
+    prim08 = galois_single_multiply((1 << 7), 2, 8);
+    if (!gf_init_hard(&GF08, 8, GF_MULT_BYTWO_b, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT,
+                      prim08, 0, 0, NULL, NULL)) {
+      fprintf(stderr, "Error: Can't initialize the GF for reed_sol_galois_w08_region_multby_2\n");
+      assert(0);
+    }
+  }
+  GF08.multiply_region.w32(&GF08, region, region, 2, nbytes, 0);
+}
+
+static int prim16 = -1;
+static gf_t GF16;
+
+void reed_sol_galois_w16_region_multby_2(char *region, int nbytes)
+{
+  if (prim16 == -1) {
+    prim16 = galois_single_multiply((1 << 15), 2, 16);
+    if (!gf_init_hard(&GF16, 16, GF_MULT_BYTWO_b, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT,
+                      prim16, 0, 0, NULL, NULL)) {
+      fprintf(stderr, "Error: Can't initialize the GF for reed_sol_galois_w16_region_multby_2\n");
+      assert(0);
+    }
+  }
+  GF16.multiply_region.w32(&GF16, region, region, 2, nbytes, 0);
+}
+
+static int prim32 = -1;
+static gf_t GF32;
+
+void reed_sol_galois_w32_region_multby_2(char *region, int nbytes)
+{
+  if (prim32 == -1) {
+    prim32 = galois_single_multiply(((gf_val_32_t)1 << 31), 2, 32);
+    if (!gf_init_hard(&GF32, 32, GF_MULT_BYTWO_b, GF_REGION_DEFAULT, GF_DIVIDE_DEFAULT,
+                      prim32, 0, 0, NULL, NULL)) {
+      fprintf(stderr, "Error: Can't initialize the GF for reed_sol_galois_w32_region_multby_2\n");
+      assert(0);
+    }
+  }
+  GF32.multiply_region.w32(&GF32, region, region, 2, nbytes, 0);
+}
+
+int reed_sol_r6_encode(int k, int w, char **data_ptrs, char **coding_ptrs, int size)
+{
+  int i;
+
+  /* First, put the XOR into coding region 0 */
+
+  memcpy(coding_ptrs[0], data_ptrs[0], size);
+
+  for (i = 1; i < k; i++) galois_region_xor(data_ptrs[i], coding_ptrs[0], size);
+
+  /* Next, put the sum of (2^j)*Dj into coding region 1 */
+
+  memcpy(coding_ptrs[1], data_ptrs[k-1], size);
+
+  for (i = k-2; i >= 0; i--) {
+    switch (w) {
+      case 8:  reed_sol_galois_w08_region_multby_2(coding_ptrs[1], size); break;
+      case 16: reed_sol_galois_w16_region_multby_2(coding_ptrs[1], size); break;
+      case 32: reed_sol_galois_w32_region_multby_2(coding_ptrs[1], size); break;
+      default: return 0;
+    }
+
+    galois_region_xor(data_ptrs[i], coding_ptrs[1], size);
+  }
+  return 1;
+}
+
+int *reed_sol_extended_vandermonde_matrix(int rows, int cols, int w)
+{
+  int *vdm;
+  int i, j, k;
+
+  if (w < 30 && (1 << w) < rows) return NULL;
+  if (w < 30 && (1 << w) < cols) return NULL;
+
+  vdm = talloc(int, rows*cols);
+  if (vdm == NULL) { return NULL; }
+  
+  vdm[0] = 1;
+  for (j = 1; j < cols; j++) vdm[j] = 0;
+  if (rows == 1) return vdm;
+
+  i=(rows-1)*cols;
+  for (j = 0; j < cols-1; j++) vdm[i+j] = 0;
+  vdm[i+j] = 1;
+  if (rows == 2) return vdm;
+
+  for (i = 1; i < rows-1; i++) {
+    k = 1;
+    for (j = 0; j < cols; j++) {
+      vdm[i*cols+j] = k;
+      k = galois_single_multiply(k, i, w);
+    }
+  }
+  return vdm;
+}
+
+int *reed_sol_big_vandermonde_distribution_matrix(int rows, int cols, int w)
+{
+  int *dist;
+  int i, j, k;
+  int sindex, srindex, siindex, tmp;
+
+  if (cols >= rows) return NULL;
+  
+  dist = reed_sol_extended_vandermonde_matrix(rows, cols, w);
+  if (dist == NULL) return NULL;
+
+  sindex = 0;
+  for (i = 1; i < cols; i++) {
+    sindex += cols;
+
+    /* Find an appropriate row -- where i,i != 0 */
+    srindex = sindex+i;
+    for (j = i; j < rows && dist[srindex] == 0; j++) srindex += cols;
+    if (j >= rows) {   /* This should never happen if rows/w are correct */
+      fprintf(stderr, "reed_sol_big_vandermonde_distribution_matrix(%d,%d,%d) - couldn't make matrix\n", 
+             rows, cols, w);
+      assert(0);
+    }
+ 
+    /* If necessary, swap rows */
+    if (j != i) {
+      srindex -= i;
+      for (k = 0; k < cols; k++) {
+        tmp = dist[srindex+k];
+        dist[srindex+k] = dist[sindex+k];
+        dist[sindex+k] = tmp;
+      }
+    }
+  
+    /* If Element i,i is not equal to 1, multiply the column by 1/i */
+
+    if (dist[sindex+i] != 1) {
+      tmp = galois_single_divide(1, dist[sindex+i], w);
+      srindex = i;
+      for (j = 0; j < rows; j++) {
+        dist[srindex] = galois_single_multiply(tmp, dist[srindex], w);
+        srindex += cols;
+      }
+    }
+ 
+    /* Now, for each element in row i that is not in column 1, you need
+       to make it zero.  Suppose that this is column j, and the element
+       at i,j = e.  Then you want to replace all of column j with 
+       (col-j + col-i*e).   Note, that in row i, col-i = 1 and col-j = e.
+       So (e + 1e) = 0, which is indeed what we want. */
+
+    for (j = 0; j < cols; j++) {
+      tmp = dist[sindex+j];
+      if (j != i && tmp != 0) {
+        srindex = j;
+        siindex = i;
+        for (k = 0; k < rows; k++) {
+          dist[srindex] = dist[srindex] ^ galois_single_multiply(tmp, dist[siindex], w);
+          srindex += cols;
+          siindex += cols;
+        }
+      }
+    }
+  }
+  /* We desire to have row k be all ones.  To do that, multiply
+     the entire column j by 1/dist[k,j].  Then row j by 1/dist[j,j]. */
+
+  sindex = cols*cols;
+  for (j = 0; j < cols; j++) {
+    tmp = dist[sindex];
+    if (tmp != 1) { 
+      tmp = galois_single_divide(1, tmp, w);
+      srindex = sindex;
+      for (i = cols; i < rows; i++) {
+        dist[srindex] = galois_single_multiply(tmp, dist[srindex], w);
+        srindex += cols;
+      }
+    }
+    sindex++;
+  }
+
+  /* Finally, we'd like the first column of each row to be all ones.  To
+     do that, we multiply the row by the inverse of the first element. */
+
+  sindex = cols*(cols+1);
+  for (i = cols+1; i < rows; i++) {
+    tmp = dist[sindex];
+    if (tmp != 1) { 
+      tmp = galois_single_divide(1, tmp, w);
+      for (j = 0; j < cols; j++) dist[sindex+j] = galois_single_multiply(dist[sindex+j], tmp, w);
+    }
+    sindex += cols;
+  }
+
+  return dist;
+}
+
diff --git a/src/erasure-code/jerasure/jerasure_init.cc b/src/erasure-code/jerasure/jerasure_init.cc
new file mode 100644
index 00000000..4c8c0e49
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure_init.cc
@@ -0,0 +1,37 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2013,2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ * 
+ */
+
+#include "common/debug.h"
+#include "jerasure_init.h"
+
+extern "C" {
+#include "galois.h"
+}
+
+#define dout_context g_ceph_context
+
+extern "C" int jerasure_init(int count, int *words)
+{
+  for(int i = 0; i < count; i++) {
+    int r = galois_init_default_field(words[i]);
+    if (r) {
+      derr << "failed to galois_init_default_field(" << words[i] << ")" << dendl;
+      return -r;
+    }
+  }
+  return 0;
+}
diff --git a/src/erasure-code/jerasure/jerasure_init.h b/src/erasure-code/jerasure/jerasure_init.h
new file mode 100644
index 00000000..758287ae
--- /dev/null
+++ b/src/erasure-code/jerasure/jerasure_init.h
@@ -0,0 +1,24 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2013, 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ * 
+ */
+
+#ifndef CEPH_JERASURE_INIT_H
+#define CEPH_JERASURE_INIT_H
+
+extern "C" int jerasure_init(int count, int *words);
+
+#endif
+
diff --git a/src/erasure-code/lrc/CMakeLists.txt b/src/erasure-code/lrc/CMakeLists.txt
new file mode 100644
index 00000000..e7fb8ea0
--- /dev/null
+++ b/src/erasure-code/lrc/CMakeLists.txt
@@ -0,0 +1,15 @@
+# lrc plugin
+
+set(lrc_srcs
+  ErasureCodePluginLrc.cc
+  ErasureCodeLrc.cc
+  $
+  $
+  ${CMAKE_SOURCE_DIR}/src/common/str_map.cc
+)
+
+add_library(ec_lrc SHARED ${lrc_srcs})
+set_target_properties(ec_lrc PROPERTIES
+  INSTALL_RPATH "")
+target_link_libraries(ec_lrc json_spirit)
+install(TARGETS ec_lrc DESTINATION ${erasure_plugin_dir})
diff --git a/src/erasure-code/lrc/ErasureCodeLrc.cc b/src/erasure-code/lrc/ErasureCodeLrc.cc
new file mode 100644
index 00000000..c882f868
--- /dev/null
+++ b/src/erasure-code/lrc/ErasureCodeLrc.cc
@@ -0,0 +1,862 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#include 
+#include 
+
+#include "include/str_map.h"
+#include "common/debug.h"
+#include "crush/CrushWrapper.h"
+#include "osd/osd_types.h"
+#include "include/stringify.h"
+#include "erasure-code/ErasureCodePlugin.h"
+#include "json_spirit/json_spirit_writer.h"
+
+#include "ErasureCodeLrc.h"
+
+// re-include our assert to clobber boost's
+#include "include/ceph_assert.h"
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _prefix(_dout)
+
+using namespace std;
+
+static ostream& _prefix(std::ostream* _dout)
+{
+  return *_dout << "ErasureCodeLrc: ";
+}
+
+int ErasureCodeLrc::create_rule(const string &name,
+				   CrushWrapper &crush,
+				   ostream *ss) const
+{
+  if (crush.rule_exists(name)) {
+    *ss << "rule " << name << " exists";
+    return -EEXIST;
+  }
+  if (!crush.name_exists(rule_root)) {
+    *ss << "root item " << rule_root << " does not exist";
+    return -ENOENT;
+  }
+  int root = crush.get_item_id(rule_root);
+  if (rule_device_class.size()) {
+    if (!crush.class_exists(rule_device_class)) {
+      *ss << "device class " << rule_device_class << " does not exist";
+      return -ENOENT;
+    }
+    int c = crush.get_class_id(rule_device_class);
+    if (crush.class_bucket.count(root) == 0 ||
+	crush.class_bucket[root].count(c) == 0) {
+      *ss << "root item " << rule_root << " has no devices with class "
+	  << rule_device_class;
+      return -EINVAL;
+    }
+    root = crush.class_bucket[root][c];
+  }
+
+  int rno = 0;
+  for (rno = 0; rno < crush.get_max_rules(); rno++) {
+    if (!crush.rule_exists(rno) && !crush.ruleset_exists(rno))
+       break;
+  }
+
+  int steps = 4 + rule_steps.size();
+  int min_rep = 3;
+  int max_rep = get_chunk_count();
+  int ret;
+  ret = crush.add_rule(rno, steps, pg_pool_t::TYPE_ERASURE,
+		       min_rep, max_rep);
+  ceph_assert(ret == rno);
+  int step = 0;
+
+  ret = crush.set_rule_step(rno, step++, CRUSH_RULE_SET_CHOOSELEAF_TRIES, 5, 0);
+  ceph_assert(ret == 0);
+  ret = crush.set_rule_step(rno, step++, CRUSH_RULE_SET_CHOOSE_TRIES, 100, 0);
+  ceph_assert(ret == 0);
+  ret = crush.set_rule_step(rno, step++, CRUSH_RULE_TAKE, root, 0);
+  ceph_assert(ret == 0);
+  // [ [ "choose", "rack", 2 ],
+  //   [ "chooseleaf", "host", 5 ] ]
+  for (vector::const_iterator i = rule_steps.begin();
+       i != rule_steps.end();
+       ++i) {
+    int op = i->op == "chooseleaf" ?
+      CRUSH_RULE_CHOOSELEAF_INDEP : CRUSH_RULE_CHOOSE_INDEP;
+    int type = crush.get_type_id(i->type);
+    if (type < 0) {
+      *ss << "unknown crush type " << i->type;
+      return -EINVAL;
+    }
+    ret = crush.set_rule_step(rno, step++, op, i->n, type);
+    ceph_assert(ret == 0);
+  }
+  ret = crush.set_rule_step(rno, step++, CRUSH_RULE_EMIT, 0, 0);
+  ceph_assert(ret == 0);
+  crush.set_rule_name(rno, name);
+  return rno;
+}
+
+int ErasureCodeLrc::layers_description(const ErasureCodeProfile &profile,
+				       json_spirit::mArray *description,
+				       ostream *ss) const
+{
+  if (profile.count("layers") == 0) {
+    *ss << "could not find 'layers' in " << profile << std::endl;
+    return ERROR_LRC_DESCRIPTION;
+  }
+  string str = profile.find("layers")->second;
+  try {
+    json_spirit::mValue json;
+    json_spirit::read_or_throw(str, json);
+
+    if (json.type() != json_spirit::array_type) {
+      *ss << "layers='" << str
+	  << "' must be a JSON array but is of type "
+	  << json.type() << " instead" << std::endl;
+      return ERROR_LRC_ARRAY;
+    }
+    *description = json.get_array();
+  } catch (json_spirit::Error_position &e) {
+    *ss << "failed to parse layers='" << str << "'"
+	<< " at line " << e.line_ << ", column " << e.column_
+	<< " : " << e.reason_ << std::endl;
+    return ERROR_LRC_PARSE_JSON;
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::layers_parse(const string &description_string,
+				 json_spirit::mArray description,
+				 ostream *ss)
+{
+  int position = 0;
+  for (vector::iterator i = description.begin();
+       i != description.end();
+       ++i, position++) {
+    if (i->type() != json_spirit::array_type) {
+      stringstream json_string;
+      json_spirit::write(*i, json_string);
+      *ss << "each element of the array "
+	  << description_string << " must be a JSON array but "
+	  << json_string.str() << " at position " << position
+	  << " is of type " << i->type() << " instead" << std::endl;
+      return ERROR_LRC_ARRAY;
+    }
+    json_spirit::mArray layer_json = i->get_array();
+    ErasureCodeProfile profile;
+    int index = 0;
+    for (vector::iterator j = layer_json.begin();
+	 j != layer_json.end();
+	 ++j, ++index) {
+      if (index == 0) {
+	if (j->type() != json_spirit::str_type) {
+	  stringstream element;
+	  json_spirit::write(*j, element);
+	  *ss << "the first element of the entry "
+	      << element.str() << " (first is zero) "
+	      << position << " in " << description_string
+	      << " is of type " << (*j).type() << " instead of string" << std::endl;
+	  return ERROR_LRC_STR;
+	}
+	layers.push_back(Layer(j->get_str()));
+	Layer &layer = layers.back();
+	layer.chunks_map = j->get_str();
+      } else if(index == 1) {
+	Layer &layer = layers.back();
+	if (j->type() != json_spirit::str_type &&
+	    j->type() != json_spirit::obj_type) {
+	  stringstream element;
+	  json_spirit::write(*j, element);
+	  *ss << "the second element of the entry "
+	      << element.str() << " (first is zero) "
+	      << position << " in " << description_string
+	      << " is of type " << (*j).type() << " instead of string or object"
+	      << std::endl;
+	  return ERROR_LRC_CONFIG_OPTIONS;
+	}
+	if (j->type() == json_spirit::str_type) {
+	  int err = get_json_str_map(j->get_str(), *ss, &layer.profile);
+	  if (err)
+	    return err;
+	} else if (j->type() == json_spirit::obj_type) {
+	  json_spirit::mObject o = j->get_obj();
+
+	  for (map::iterator i = o.begin();
+	       i != o.end();
+	       ++i) {
+	    layer.profile[i->first] = i->second.get_str();
+	  }
+	}
+      } else {
+	  // ignore trailing elements
+      }
+    }
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::layers_init(ostream *ss)
+{
+  ErasureCodePluginRegistry ®istry = ErasureCodePluginRegistry::instance();
+  for (unsigned int i = 0; i < layers.size(); i++) {
+    Layer &layer = layers[i];
+    int position = 0;
+    for(std::string::iterator it = layer.chunks_map.begin();
+	it != layer.chunks_map.end();
+	++it) {
+      if (*it == 'D')
+	layer.data.push_back(position);
+      if (*it == 'c')
+	layer.coding.push_back(position);
+      if (*it == 'c' || *it == 'D')
+	layer.chunks_as_set.insert(position);
+      position++;
+    }
+    layer.chunks = layer.data;
+    layer.chunks.insert(layer.chunks.end(),
+			layer.coding.begin(), layer.coding.end());
+    if (layer.profile.find("k") == layer.profile.end())
+      layer.profile["k"] = stringify(layer.data.size());
+    if (layer.profile.find("m") == layer.profile.end())
+      layer.profile["m"] = stringify(layer.coding.size());
+    if (layer.profile.find("plugin") == layer.profile.end())
+      layer.profile["plugin"] = "jerasure";
+    if (layer.profile.find("technique") == layer.profile.end())
+      layer.profile["technique"] = "reed_sol_van";
+    int err = registry.factory(layer.profile["plugin"],
+			       directory,
+			       layer.profile,
+			       &layer.erasure_code,
+			       ss);
+    if (err)
+      return err;
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::layers_sanity_checks(const string &description_string,
+					 ostream *ss) const
+{
+  int position = 0;
+
+  if (layers.size() < 1) {
+    *ss << "layers parameter has " << layers.size()
+	<< " which is less than the minimum of one. "
+	<< description_string << std::endl;
+    return ERROR_LRC_LAYERS_COUNT;
+  }
+  for (vector::const_iterator layer = layers.begin();
+       layer != layers.end();
+       ++layer) {
+    if (chunk_count != layer->chunks_map.length()) {
+      *ss << "the first element of the array at position "
+	  << position << " (starting from zero) "
+	  << " is the string '" << layer->chunks_map
+	  << " found in the layers parameter "
+	  << description_string << ". It is expected to be "
+	  << chunk_count << " characters long but is "
+	  << layer->chunks_map.length() << " characters long instead "
+	  << std::endl;
+      return ERROR_LRC_MAPPING_SIZE;
+    }
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::parse(ErasureCodeProfile &profile,
+			  ostream *ss)
+{
+  int r = ErasureCode::parse(profile, ss);
+  if (r)
+    return r;
+
+  return parse_rule(profile, ss);
+}
+
+const string ErasureCodeLrc::DEFAULT_KML("-1");
+
+int ErasureCodeLrc::parse_kml(ErasureCodeProfile &profile,
+			      ostream *ss)
+{
+  int err = ErasureCode::parse(profile, ss);
+  const int DEFAULT_INT = -1;
+  int k, m, l;
+  err |= to_int("k", profile, &k, DEFAULT_KML, ss);
+  err |= to_int("m", profile, &m, DEFAULT_KML, ss);
+  err |= to_int("l", profile, &l, DEFAULT_KML, ss);
+
+  if (k == DEFAULT_INT && m == DEFAULT_INT && l == DEFAULT_INT)
+    return err;
+
+  if ((k != DEFAULT_INT || m != DEFAULT_INT || l != DEFAULT_INT) &&
+      (k == DEFAULT_INT || m == DEFAULT_INT || l == DEFAULT_INT)) {
+    *ss << "All of k, m, l must be set or none of them in "
+	<< profile << std::endl;
+    return ERROR_LRC_ALL_OR_NOTHING;
+  }
+
+  const char *generated[] = { "mapping",
+			      "layers",
+			      "crush-steps" };
+
+  for (int i = 0; i < 3; i++) {
+    if (profile.count(generated[i])) {
+      *ss << "The " << generated[i] << " parameter cannot be set "
+	  << "when k, m, l are set in " << profile << std::endl;
+      return ERROR_LRC_GENERATED;
+    }
+  }
+
+  if (l == 0 || (k + m) % l) {
+    *ss << "k + m must be a multiple of l in "
+	<< profile << std::endl;
+    return ERROR_LRC_K_M_MODULO;
+  }
+
+  int local_group_count = (k + m) / l;
+
+  if (k % local_group_count) {
+    *ss << "k must be a multiple of (k + m) / l in "
+	<< profile << std::endl;
+    return ERROR_LRC_K_MODULO;
+  }
+
+  if (m % local_group_count) {
+    *ss << "m must be a multiple of (k + m) / l in "
+	<< profile << std::endl;
+    return ERROR_LRC_M_MODULO;
+  }
+
+  string mapping;
+  for (int i = 0; i < local_group_count; i++) {
+    mapping += string(k / local_group_count, 'D') +
+      string(m / local_group_count, '_') + "_";
+  }
+  profile["mapping"] = mapping;
+
+  string layers = "[ ";
+
+  // global layer
+  layers += " [ \"";
+  for (int i = 0; i < local_group_count; i++) {
+    layers += string(k / local_group_count, 'D') +
+      string(m / local_group_count, 'c') + "_";
+  }
+  layers += "\", \"\" ],";
+
+  // local layers
+  for (int i = 0; i < local_group_count; i++) {
+    layers += " [ \"";
+    for (int j = 0; j < local_group_count; j++) {
+      if (i == j)
+	layers += string(l, 'D') + "c";
+      else
+	layers += string(l + 1, '_');
+    }
+    layers += "\", \"\" ],";
+  }
+  profile["layers"] = layers + "]";
+
+  ErasureCodeProfile::const_iterator parameter;
+  string rule_locality;
+  parameter = profile.find("crush-locality");
+  if (parameter != profile.end())
+    rule_locality = parameter->second;
+  string rule_failure_domain = "host";
+  parameter = profile.find("crush-failure-domain");
+  if (parameter != profile.end())
+    rule_failure_domain = parameter->second;
+
+  if (rule_locality != "") {
+    rule_steps.clear();
+    rule_steps.push_back(Step("choose", rule_locality,
+				 local_group_count));
+    rule_steps.push_back(Step("chooseleaf", rule_failure_domain,
+				 l + 1));
+  } else if (rule_failure_domain != "") {
+    rule_steps.clear();
+    rule_steps.push_back(Step("chooseleaf", rule_failure_domain, 0));
+  }
+
+  return err;
+}
+
+int ErasureCodeLrc::parse_rule(ErasureCodeProfile &profile,
+				  ostream *ss)
+{
+  int err = 0;
+  err |= to_string("crush-root", profile,
+		   &rule_root,
+		   "default", ss);
+  err |= to_string("crush-device-class", profile,
+		   &rule_device_class,
+		   "", ss);
+
+  if (profile.count("crush-steps") != 0) {
+    rule_steps.clear();
+    string str = profile.find("crush-steps")->second;
+    json_spirit::mArray description;
+    try {
+      json_spirit::mValue json;
+      json_spirit::read_or_throw(str, json);
+
+      if (json.type() != json_spirit::array_type) {
+	*ss << "crush-steps='" << str
+	    << "' must be a JSON array but is of type "
+	    << json.type() << " instead" << std::endl;
+	return ERROR_LRC_ARRAY;
+      }
+      description = json.get_array();
+    } catch (json_spirit::Error_position &e) {
+      *ss << "failed to parse crush-steps='" << str << "'"
+	  << " at line " << e.line_ << ", column " << e.column_
+	  << " : " << e.reason_ << std::endl;
+      return ERROR_LRC_PARSE_JSON;
+    }
+
+    int position = 0;
+    for (vector::iterator i = description.begin();
+	 i != description.end();
+	 ++i, position++) {
+      if (i->type() != json_spirit::array_type) {
+	stringstream json_string;
+	json_spirit::write(*i, json_string);
+	*ss << "element of the array "
+	    << str << " must be a JSON array but "
+	    << json_string.str() << " at position " << position
+	    << " is of type " << i->type() << " instead" << std::endl;
+	return ERROR_LRC_ARRAY;
+      }
+      int r = parse_rule_step(str, i->get_array(), ss);
+      if (r)
+	return r;
+    }
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::parse_rule_step(const string &description_string,
+				       json_spirit::mArray description,
+				       ostream *ss)
+{
+  stringstream json_string;
+  json_spirit::write(description, json_string);
+  string op;
+  string type;
+  int n = 0;
+  int position = 0;
+  for (vector::iterator i = description.begin();
+       i != description.end();
+       ++i, position++) {
+    if ((position == 0 || position == 1) &&
+	i->type() != json_spirit::str_type) {
+      *ss << "element " << position << " of the array "
+	  << json_string.str() << " found in " << description_string
+	  << " must be a JSON string but is of type "
+	  << i->type() << " instead" << std::endl;
+      return position == 0 ? ERROR_LRC_RULE_OP : ERROR_LRC_RULE_TYPE;
+    }
+    if (position == 2 && i->type() != json_spirit::int_type) {
+      *ss << "element " << position << " of the array "
+	  << json_string.str() << " found in " << description_string
+	  << " must be a JSON int but is of type "
+	  << i->type() << " instead" << std::endl;
+      return ERROR_LRC_RULE_N;
+    }
+
+    if (position == 0)
+      op = i->get_str();
+    if (position == 1)
+      type = i->get_str();
+    if (position == 2)
+      n = i->get_int();
+  }
+  rule_steps.push_back(Step(op, type, n));
+  return 0;
+}
+
+int ErasureCodeLrc::init(ErasureCodeProfile &profile,
+			 ostream *ss)
+{
+  int r;
+
+  r = parse_kml(profile, ss);
+  if (r)
+    return r;
+
+  r = parse(profile, ss);
+  if (r)
+    return r;
+
+  json_spirit::mArray description;
+  r = layers_description(profile, &description, ss);
+  if (r)
+    return r;
+
+  string description_string = profile.find("layers")->second;
+
+  dout(10) << "init(" << description_string << ")" << dendl;
+
+  r = layers_parse(description_string, description, ss);
+  if (r)
+    return r;
+
+  r = layers_init(ss);
+  if (r)
+    return r;
+
+  if (profile.count("mapping") == 0) {
+    *ss << "the 'mapping' profile is missing from " << profile;
+    return ERROR_LRC_MAPPING;
+  }
+  string mapping = profile.find("mapping")->second;
+  data_chunk_count = count(begin(mapping), end(mapping), 'D');
+  chunk_count = mapping.length();
+
+  r = layers_sanity_checks(description_string, ss);
+  if (r)
+    return r;
+
+  //
+  // When initialized with kml, the profile parameters
+  // that were generated should not be stored because
+  // they would otherwise be exposed to the caller.
+  //
+  if (profile.find("l") != profile.end() &&
+      profile.find("l")->second != DEFAULT_KML) {
+    profile.erase("mapping");
+    profile.erase("layers");
+  }
+  ErasureCode::init(profile, ss);
+  return 0;
+}
+
+set ErasureCodeLrc::get_erasures(const set &want,
+				      const set &available) const
+{
+  set result;
+  set_difference(want.begin(), want.end(),
+		 available.begin(), available.end(),
+		 inserter(result, result.end()));
+  return result;
+}
+
+unsigned int ErasureCodeLrc::get_chunk_size(unsigned int object_size) const
+{
+  return layers.front().erasure_code->get_chunk_size(object_size);
+}
+
+void p(const set &s) { cerr << s; } // for gdb
+
+int ErasureCodeLrc::_minimum_to_decode(const set &want_to_read,
+				       const set &available_chunks,
+				       set *minimum)
+{
+  dout(20) << __func__ << " want_to_read " << want_to_read
+	   << " available_chunks " << available_chunks << dendl;
+  {
+    set erasures_total;
+    set erasures_not_recovered;
+    set erasures_want;
+    for (unsigned int i = 0; i < get_chunk_count(); ++i) {
+      if (available_chunks.count(i) == 0) {
+	erasures_total.insert(i);
+	erasures_not_recovered.insert(i);
+	if (want_to_read.count(i) != 0)
+	  erasures_want.insert(i);
+      }
+    }
+
+    //
+    // Case 1:
+    //
+    // When no chunk is missing there is no need to read more than what
+    // is wanted.
+    //
+    if (erasures_want.empty()) {
+      *minimum = want_to_read;
+      dout(20) << __func__ << " minimum == want_to_read == "
+	       << want_to_read << dendl;
+      return 0;
+    }
+
+    //
+    // Case 2:
+    //
+    // Try to recover erasures with as few chunks as possible.
+    //
+    for (vector::reverse_iterator i = layers.rbegin();
+	 i != layers.rend();
+	 ++i) {
+      //
+      // If this layer has no chunk that we want, skip it.
+      //
+      set layer_want;
+      set_intersection(want_to_read.begin(), want_to_read.end(),
+		       i->chunks_as_set.begin(), i->chunks_as_set.end(),
+		       inserter(layer_want, layer_want.end()));
+      if (layer_want.empty())
+	continue;
+      //
+      // Are some of the chunks we want missing ?
+      //
+      set layer_erasures;
+      set_intersection(layer_want.begin(), layer_want.end(),
+		       erasures_want.begin(), erasures_want.end(),
+		       inserter(layer_erasures, layer_erasures.end()));
+      set layer_minimum;
+      if (layer_erasures.empty()) {
+	//
+	// The chunks we want are available, this is the minimum we need
+	// to read.
+	//
+	layer_minimum = layer_want;
+      } else {
+	set erasures;
+	set_intersection(i->chunks_as_set.begin(), i->chunks_as_set.end(),
+			 erasures_not_recovered.begin(), erasures_not_recovered.end(),
+			 inserter(erasures, erasures.end()));
+
+	if (erasures.size() > i->erasure_code->get_coding_chunk_count()) {
+	  //
+	  // There are too many erasures for this layer to recover: skip
+	  // it and hope that an upper layer will be do better.
+	  //
+	  continue;
+	} else {
+	  //
+	  // Get all available chunks in that layer to recover the
+	  // missing one(s).
+	  //
+	  set_difference(i->chunks_as_set.begin(), i->chunks_as_set.end(),
+			 erasures_not_recovered.begin(), erasures_not_recovered.end(),
+			 inserter(layer_minimum, layer_minimum.end()));
+	  //
+	  // Chunks recovered by this layer are removed from the list of
+	  // erasures so that upper levels do not attempt to recover
+	  // them.
+	  //
+	  for (set::const_iterator j = erasures.begin();
+	       j != erasures.end();
+	       ++j) {
+	    erasures_not_recovered.erase(*j);
+	    erasures_want.erase(*j);
+	  }
+	}
+      }
+      minimum->insert(layer_minimum.begin(), layer_minimum.end());
+    }
+    if (erasures_want.empty()) {
+      minimum->insert(want_to_read.begin(), want_to_read.end());
+      for (set::const_iterator i = erasures_total.begin();
+	   i != erasures_total.end();
+	   ++i) {
+	if (minimum->count(*i))
+	  minimum->erase(*i);
+      }
+      dout(20) << __func__ << " minimum = " << *minimum << dendl;
+      return 0;
+    }
+  }
+
+  {
+    //
+    // Case 3:
+    //
+    // The previous strategy failed to recover from all erasures.
+    //
+    // Try to recover as many chunks as possible, even from layers
+    // that do not contain chunks that we want, in the hope that it
+    // will help the upper layers.
+    //
+    set erasures_total;
+    for (unsigned int i = 0; i < get_chunk_count(); ++i) {
+      if (available_chunks.count(i) == 0)
+	erasures_total.insert(i);
+    }
+
+    for (vector::reverse_iterator i = layers.rbegin();
+	 i != layers.rend();
+	 ++i) {
+      set layer_erasures;
+      set_intersection(i->chunks_as_set.begin(), i->chunks_as_set.end(),
+		       erasures_total.begin(), erasures_total.end(),
+		       inserter(layer_erasures, layer_erasures.end()));
+      //
+      // If this layer has no erasure, skip it
+      //
+      if (layer_erasures.empty())
+	continue;
+
+      if (layer_erasures.size() > 0 &&
+	  layer_erasures.size() <= i->erasure_code->get_coding_chunk_count()) {
+	//
+	// chunks recovered by this layer are removed from the list of
+	// erasures so that upper levels know they can rely on their
+	// availability
+	//
+	for (set::const_iterator j = layer_erasures.begin();
+	     j != layer_erasures.end();
+	     ++j) {
+	  erasures_total.erase(*j);
+	}
+      }
+    }
+    if (erasures_total.empty()) {
+      //
+      // Do not try to be smart about what chunks are necessary to
+      // recover, use all available chunks.
+      //
+      *minimum = available_chunks;
+      dout(20) << __func__ << " minimum == available_chunks == "
+	       << available_chunks << dendl;
+      return 0;
+    }
+  }
+
+  derr << __func__ << " not enough chunks in " << available_chunks
+       << " to read " << want_to_read << dendl;
+  return -EIO;
+}
+
+int ErasureCodeLrc::encode_chunks(const set &want_to_encode,
+				  map *encoded)
+{
+  unsigned int top = layers.size();
+  for (vector::reverse_iterator i = layers.rbegin();
+       i != layers.rend();
+       ++i) {
+    --top;
+    if (includes(i->chunks_as_set.begin(), i->chunks_as_set.end(),
+		 want_to_encode.begin(), want_to_encode.end()))
+      break;
+  }
+
+  for (unsigned int i = top; i < layers.size(); ++i) {
+    const Layer &layer = layers[i];
+    set layer_want_to_encode;
+    map layer_encoded;
+    int j = 0;
+    for (const auto& c : layer.chunks) {
+      std::swap(layer_encoded[j], (*encoded)[c]);
+      if (want_to_encode.find(c) != want_to_encode.end())
+	layer_want_to_encode.insert(j);
+      j++;
+    }
+    int err = layer.erasure_code->encode_chunks(layer_want_to_encode,
+						&layer_encoded);
+    j = 0;
+    for (const auto& c : layer.chunks) {
+      std::swap(layer_encoded[j++], (*encoded)[c]);
+    }
+    if (err) {
+      derr << __func__ << " layer " << layer.chunks_map
+	   << " failed with " << err << " trying to encode "
+	   << layer_want_to_encode << dendl;
+      return err;
+    }
+  }
+  return 0;
+}
+
+int ErasureCodeLrc::decode_chunks(const set &want_to_read,
+				  const map &chunks,
+				  map *decoded)
+{
+  set available_chunks;
+  set erasures;
+  for (unsigned int i = 0; i < get_chunk_count(); ++i) {
+    if (chunks.count(i) != 0)
+      available_chunks.insert(i);
+    else
+      erasures.insert(i);
+  }
+
+  set want_to_read_erasures;
+
+  for (vector::reverse_iterator layer = layers.rbegin();
+       layer != layers.rend();
+       ++layer) {
+    set layer_erasures;
+    set_intersection(layer->chunks_as_set.begin(), layer->chunks_as_set.end(),
+		     erasures.begin(), erasures.end(),
+		     inserter(layer_erasures, layer_erasures.end()));
+
+    if (layer_erasures.size() >
+	layer->erasure_code->get_coding_chunk_count()) {
+      // skip because there are too many erasures for this layer to recover
+    } else if(layer_erasures.size() == 0) {
+      // skip because all chunks are already available
+    } else {
+      set layer_want_to_read;
+      map layer_chunks;
+      map layer_decoded;
+      int j = 0;
+      for (vector::const_iterator c = layer->chunks.begin();
+	   c != layer->chunks.end();
+	   ++c) {
+	//
+	// Pick chunks from *decoded* instead of *chunks* to re-use
+	// chunks recovered by previous layers. In other words
+	// *chunks* does not change but *decoded* gradually improves
+	// as more layers recover from erasures.
+	//
+	if (erasures.count(*c) == 0)
+	  layer_chunks[j] = (*decoded)[*c];
+	if (want_to_read.count(*c) != 0)
+	  layer_want_to_read.insert(j);
+	layer_decoded[j] = (*decoded)[*c];
+	++j;
+      }
+      int err = layer->erasure_code->decode_chunks(layer_want_to_read,
+						   layer_chunks,
+						   &layer_decoded);
+      if (err) {
+	derr << __func__ << " layer " << layer->chunks_map
+	     << " failed with " << err << " trying to decode "
+	     << layer_want_to_read << " with " << available_chunks << dendl;
+	return err;
+      }
+      j = 0;
+      for (vector::const_iterator c = layer->chunks.begin();
+	   c != layer->chunks.end();
+	   ++c) {
+	(*decoded)[*c] = layer_decoded[j];
+	++j;
+	erasures.erase(*c);
+      }
+      want_to_read_erasures.clear();
+      set_intersection(erasures.begin(), erasures.end(),
+		       want_to_read.begin(), want_to_read.end(),
+		       inserter(want_to_read_erasures, want_to_read_erasures.end()));
+      if (want_to_read_erasures.size() == 0)
+	break;
+    }
+  }
+
+  if (want_to_read_erasures.size() > 0) {
+    derr << __func__ << " want to read " << want_to_read
+	 << " with available_chunks = " << available_chunks
+	 << " end up being unable to read " << want_to_read_erasures << dendl;
+    return -EIO;
+  } else {
+    return 0;
+  }
+}
diff --git a/src/erasure-code/lrc/ErasureCodeLrc.h b/src/erasure-code/lrc/ErasureCodeLrc.h
new file mode 100644
index 00000000..f1addd91
--- /dev/null
+++ b/src/erasure-code/lrc/ErasureCodeLrc.h
@@ -0,0 +1,138 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef CEPH_ERASURE_CODE_LRC_H
+#define CEPH_ERASURE_CODE_LRC_H
+
+#include "include/err.h"
+#include "json_spirit/json_spirit.h"
+#include "erasure-code/ErasureCode.h"
+
+#define ERROR_LRC_ARRAY			-(MAX_ERRNO + 1)
+#define ERROR_LRC_OBJECT		-(MAX_ERRNO + 2)
+#define ERROR_LRC_INT			-(MAX_ERRNO + 3)
+#define ERROR_LRC_STR			-(MAX_ERRNO + 4)
+#define ERROR_LRC_PLUGIN		-(MAX_ERRNO + 5)
+#define ERROR_LRC_DESCRIPTION		-(MAX_ERRNO + 6)
+#define ERROR_LRC_PARSE_JSON		-(MAX_ERRNO + 7)
+#define ERROR_LRC_MAPPING		-(MAX_ERRNO + 8)
+#define ERROR_LRC_MAPPING_SIZE		-(MAX_ERRNO + 9)
+#define ERROR_LRC_FIRST_MAPPING		-(MAX_ERRNO + 10)
+#define ERROR_LRC_COUNT_CONSTRAINT	-(MAX_ERRNO + 11)
+#define ERROR_LRC_CONFIG_OPTIONS	-(MAX_ERRNO + 12)
+#define ERROR_LRC_LAYERS_COUNT		-(MAX_ERRNO + 13)
+#define ERROR_LRC_RULE_OP		-(MAX_ERRNO + 14)
+#define ERROR_LRC_RULE_TYPE		-(MAX_ERRNO + 15)
+#define ERROR_LRC_RULE_N		-(MAX_ERRNO + 16)
+#define ERROR_LRC_ALL_OR_NOTHING	-(MAX_ERRNO + 17)
+#define ERROR_LRC_GENERATED		-(MAX_ERRNO + 18)
+#define ERROR_LRC_K_M_MODULO		-(MAX_ERRNO + 19)
+#define ERROR_LRC_K_MODULO		-(MAX_ERRNO + 20)
+#define ERROR_LRC_M_MODULO		-(MAX_ERRNO + 21)
+
+class ErasureCodeLrc final : public ErasureCode {
+public:
+  static const std::string DEFAULT_KML;
+
+  struct Layer {
+    explicit Layer(const std::string &_chunks_map) : chunks_map(_chunks_map) { }
+    ErasureCodeInterfaceRef erasure_code;
+    std::vector data;
+    std::vector coding;
+    std::vector chunks;
+    std::set chunks_as_set;
+    std::string chunks_map;
+    ErasureCodeProfile profile;
+  };
+  std::vector layers;
+  std::string directory;
+  unsigned int chunk_count;
+  unsigned int data_chunk_count;
+  std::string rule_root;
+  std::string rule_device_class;
+  struct Step {
+    Step(const std::string &_op, const std::string &_type, int _n) :
+      op(_op),
+      type(_type),
+      n(_n) {}
+    std::string op;
+    std::string type;
+    int n;
+  };
+  std::vector rule_steps;
+
+  explicit ErasureCodeLrc(const std::string &dir)
+    : directory(dir),
+      chunk_count(0), data_chunk_count(0), rule_root("default")
+  {
+    rule_steps.push_back(Step("chooseleaf", "host", 0));
+  }
+
+  ~ErasureCodeLrc() override {}
+
+  std::set get_erasures(const std::set &need,
+			const std::set &available) const;
+
+  int _minimum_to_decode(const std::set &want_to_read,
+			 const std::set &available,
+			 std::set *minimum) override;
+
+  int create_rule(const std::string &name,
+			     CrushWrapper &crush,
+			     std::ostream *ss) const override;
+
+  unsigned int get_chunk_count() const override {
+    return chunk_count;
+  }
+
+  unsigned int get_data_chunk_count() const override {
+    return data_chunk_count;
+  }
+
+  unsigned int get_chunk_size(unsigned int object_size) const override;
+
+  int encode_chunks(const std::set &want_to_encode,
+			    std::map *encoded) override;
+
+  int decode_chunks(const std::set &want_to_read,
+			    const std::map &chunks,
+			    std::map *decoded) override;
+
+  int init(ErasureCodeProfile &profile, std::ostream *ss) override;
+
+  virtual int parse(ErasureCodeProfile &profile, std::ostream *ss);
+
+  int parse_kml(ErasureCodeProfile &profile, std::ostream *ss);
+
+  int parse_rule(ErasureCodeProfile &profile, std::ostream *ss);
+
+  int parse_rule_step(const std::string &description_string,
+		      json_spirit::mArray description,
+		      std::ostream *ss);
+
+  int layers_description(const ErasureCodeProfile &profile,
+			 json_spirit::mArray *description,
+			 std::ostream *ss) const;
+  int layers_parse(const std::string &description_string,
+		   json_spirit::mArray description,
+		   std::ostream *ss);
+  int layers_init(std::ostream *ss);
+  int layers_sanity_checks(const std::string &description_string,
+			   std::ostream *ss) const;
+};
+
+#endif
diff --git a/src/erasure-code/lrc/ErasureCodePluginLrc.cc b/src/erasure-code/lrc/ErasureCodePluginLrc.cc
new file mode 100644
index 00000000..1731148b
--- /dev/null
+++ b/src/erasure-code/lrc/ErasureCodePluginLrc.cc
@@ -0,0 +1,48 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#include "ceph_ver.h"
+#include "common/debug.h"
+#include "ErasureCodePluginLrc.h"
+#include "ErasureCodeLrc.h"
+
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _prefix(_dout)
+
+int ErasureCodePluginLrc::factory(const std::string &directory,
+		      ErasureCodeProfile &profile,
+		      ErasureCodeInterfaceRef *erasure_code,
+		      std::ostream *ss) {
+    ErasureCodeLrc *interface;
+    interface = new ErasureCodeLrc(directory);
+    int r = interface->init(profile, ss);
+    if (r) {
+      delete interface;
+      return r;
+    }
+    *erasure_code = ErasureCodeInterfaceRef(interface);
+    return 0;
+};
+
+const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; }
+
+int __erasure_code_init(char *plugin_name, char *directory)
+{
+  ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
+  return instance.add(plugin_name, new ErasureCodePluginLrc());
+}
diff --git a/src/erasure-code/lrc/ErasureCodePluginLrc.h b/src/erasure-code/lrc/ErasureCodePluginLrc.h
new file mode 100644
index 00000000..0d38f8c7
--- /dev/null
+++ b/src/erasure-code/lrc/ErasureCodePluginLrc.h
@@ -0,0 +1,31 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ * 
+ */
+
+#ifndef CEPH_ERASURE_CODE_PLUGIN_LRC_H
+#define CEPH_ERASURE_CODE_PLUGIN_LRC_H
+
+#include "erasure-code/ErasureCodePlugin.h"
+
+class ErasureCodePluginLrc : public ErasureCodePlugin {
+public:
+  int factory(const std::string &directory,
+		      ErasureCodeProfile &profile,
+		      ErasureCodeInterfaceRef *erasure_code,
+		      ostream *ss) override;
+};
+
+#endif
diff --git a/src/erasure-code/shec/CMakeLists.txt b/src/erasure-code/shec/CMakeLists.txt
new file mode 100644
index 00000000..0e699203
--- /dev/null
+++ b/src/erasure-code/shec/CMakeLists.txt
@@ -0,0 +1,33 @@
+#shec plugin
+
+include_directories(.)
+
+set(shec_utils_srcs
+  ${CMAKE_SOURCE_DIR}/src/erasure-code/ErasureCode.cc 
+  ErasureCodePluginShec.cc 
+  ErasureCodeShec.cc 
+  ErasureCodeShecTableCache.cc 
+  determinant.c)
+
+add_library(shec_utils OBJECT ${shec_utils_srcs})
+
+set(ec_shec_objs
+  $
+  $
+  $)
+
+add_library(ec_shec SHARED ${ec_shec_objs})
+set_target_properties(ec_shec PROPERTIES
+  INSTALL_RPATH "")
+target_link_libraries(ec_shec ${EXTRALIBS})
+install(TARGETS ec_shec DESTINATION ${erasure_plugin_dir})
+
+# legacy libraries
+foreach(flavor ${jerasure_legacy_flavors})
+  set(plugin_name "ec_shec_${flavor}")
+  add_library(${plugin_name} SHARED ${ec_shec_objs})
+  set_target_properties(${plugin_name} PROPERTIES
+    INSTALL_RPATH "")
+  install(TARGETS ${plugin_name} DESTINATION ${erasure_plugin_dir})
+  add_dependencies(ec_shec ${plugin_name})
+endforeach()
diff --git a/src/erasure-code/shec/ErasureCodePluginShec.cc b/src/erasure-code/shec/ErasureCodePluginShec.cc
new file mode 100644
index 00000000..b0ecf3f0
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodePluginShec.cc
@@ -0,0 +1,82 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 FUJITSU LIMITED
+ * Copyright (C) 2013,2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#include "ceph_ver.h"
+#include "common/debug.h"
+#include "ErasureCodePluginShec.h"
+#include "ErasureCodeShecTableCache.h"
+#include "ErasureCodeShec.h"
+#include "jerasure_init.h"
+
+#define dout_context g_ceph_context
+
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _prefix(_dout)
+
+static ostream& _prefix(std::ostream* _dout)
+{
+  return *_dout << "ErasureCodePluginShec: ";
+}
+
+int ErasureCodePluginShec::factory(const std::string &directory,
+		      ErasureCodeProfile &profile,
+		      ErasureCodeInterfaceRef *erasure_code,
+		      std::ostream *ss) {
+    ErasureCodeShec *interface;
+
+    if (profile.find("technique") == profile.end())
+      profile["technique"] = "multiple";
+    std::string t = profile.find("technique")->second;
+
+    if (t == "single"){
+      interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::SINGLE);
+    } else if (t == "multiple"){
+      interface = new ErasureCodeShecReedSolomonVandermonde(tcache, ErasureCodeShec::MULTIPLE);
+    } else {
+      *ss << "technique=" << t << " is not a valid coding technique. "
+	  << "Choose one of the following: "
+	  << "single, multiple ";
+      return -ENOENT;
+    }
+    int r = interface->init(profile, ss);
+    if (r) {
+      delete interface;
+      return r;
+    }
+    *erasure_code = ErasureCodeInterfaceRef(interface);
+
+    dout(10) << "ErasureCodePluginShec: factory() completed" << dendl;
+
+    return 0;
+}
+
+const char *__erasure_code_version() { return CEPH_GIT_NICE_VER; }
+
+int __erasure_code_init(char *plugin_name, char *directory = (char *)"")
+{
+  ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
+  int w[] = { 8, 16, 32 };
+  int r = jerasure_init(3, w);
+  if (r) {
+    return -r;
+  }
+  return instance.add(plugin_name, new ErasureCodePluginShec());
+}
diff --git a/src/erasure-code/shec/ErasureCodePluginShec.h b/src/erasure-code/shec/ErasureCodePluginShec.h
new file mode 100644
index 00000000..72b59a46
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodePluginShec.h
@@ -0,0 +1,34 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph distributed storage system
+ *
+ * Copyright (C) 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ * 
+ */
+
+#ifndef CEPH_ERASURE_CODE_PLUGIN_SHEC_H
+#define CEPH_ERASURE_CODE_PLUGIN_SHEC_H
+
+#include "ErasureCodeShecTableCache.h"
+#include "erasure-code/ErasureCodePlugin.h"
+
+class ErasureCodePluginShec : public ErasureCodePlugin {
+public:
+  ErasureCodeShecTableCache tcache;
+
+  int factory(const std::string &directory,
+		      ErasureCodeProfile &profile,
+		      ErasureCodeInterfaceRef *erasure_code,
+		      ostream *ss) override;
+};
+
+#endif
diff --git a/src/erasure-code/shec/ErasureCodeShec.cc b/src/erasure-code/shec/ErasureCodeShec.cc
new file mode 100644
index 00000000..75bbe97d
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodeShec.cc
@@ -0,0 +1,809 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 FUJITSU LIMITED
+ * Copyright (C) 2013,2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+using namespace std;
+
+#include "common/debug.h"
+#include "ErasureCodeShec.h"
+extern "C" {
+#include "jerasure/include/jerasure.h"
+#include "jerasure/include/galois.h"
+
+extern int calc_determinant(int *matrix, int dim);
+extern int* reed_sol_vandermonde_coding_matrix(int k, int m, int w);
+}
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _prefix(_dout)
+
+static ostream& _prefix(std::ostream* _dout)
+{
+  return *_dout << "ErasureCodeShec: ";
+}
+
+int ErasureCodeShec::init(ErasureCodeProfile &profile,
+			  ostream *ss)
+{
+  int err = 0;
+  err |= parse(profile);
+  if (err)
+    return err;
+  prepare();
+  return ErasureCode::init(profile, ss);
+}
+
+unsigned int ErasureCodeShec::get_chunk_size(unsigned int object_size) const
+{
+  unsigned alignment = get_alignment();
+  unsigned tail = object_size % alignment;
+  unsigned padded_length = object_size + ( tail ?  ( alignment - tail ) : 0 );
+
+  ceph_assert(padded_length % k == 0);
+  return padded_length / k;
+}
+
+int ErasureCodeShec::_minimum_to_decode(const set &want_to_read,
+				       const set &available_chunks,
+				       set *minimum_chunks)
+{
+  if (!minimum_chunks) return -EINVAL;
+
+  for (set::iterator it = available_chunks.begin(); it != available_chunks.end(); ++it){
+    if (*it < 0 || k+m <= *it) return -EINVAL;
+  }
+
+  for (set::iterator it = want_to_read.begin(); it != want_to_read.end(); ++it){
+    if (*it < 0 || k+m <= *it) return -EINVAL;
+  }
+
+  int want[k + m];
+  int avails[k + m];
+  int minimum[k + m];
+
+  memset(want, 0, sizeof(want));
+  memset(avails, 0, sizeof(avails));
+  memset(minimum, 0, sizeof(minimum));
+  (*minimum_chunks).clear();
+
+  for (set::const_iterator i = want_to_read.begin();
+       i != want_to_read.end();
+       ++i) {
+    want[*i] = 1;
+  }
+
+  for (set::const_iterator i = available_chunks.begin();
+       i != available_chunks.end();
+       ++i) {
+    avails[*i] = 1;
+  }
+
+  {
+    int decoding_matrix[k*k];
+    int dm_row[k];
+    int dm_column[k];
+    memset(decoding_matrix, 0, sizeof(decoding_matrix));
+    memset(dm_row, 0, sizeof(dm_row));
+    memset(dm_column, 0, sizeof(dm_column));
+    if (shec_make_decoding_matrix(true, want, avails, decoding_matrix, dm_row, dm_column, minimum) < 0) {
+      return -EIO;
+    }
+  }
+
+  for (int i = 0; i < k + m; i++) {
+    if (minimum[i] == 1) minimum_chunks->insert(i);
+  }
+
+  return 0;
+}
+
+int ErasureCodeShec::minimum_to_decode_with_cost(const set &want_to_read,
+						 const map &available,
+						 set *minimum_chunks)
+{
+  set  available_chunks;
+
+  for (map::const_iterator i = available.begin();
+       i != available.end();
+       ++i)
+    available_chunks.insert(i->first);
+
+  return _minimum_to_decode(want_to_read, available_chunks, minimum_chunks);
+}
+
+int ErasureCodeShec::encode(const set &want_to_encode,
+			    const bufferlist &in,
+			    map *encoded)
+{
+  unsigned int k = get_data_chunk_count();
+  unsigned int m = get_chunk_count() - k;
+  bufferlist out;
+
+  if (!encoded || !encoded->empty()){
+    return -EINVAL;
+  }
+
+  int err = encode_prepare(in, *encoded);
+  if (err)
+    return err;
+  encode_chunks(want_to_encode, encoded);
+  for (unsigned int i = 0; i < k + m; i++) {
+    if (want_to_encode.count(i) == 0)
+      encoded->erase(i);
+  }
+  return 0;
+}
+
+int ErasureCodeShec::encode_chunks(const set &want_to_encode,
+				   map *encoded)
+{
+  char *chunks[k + m];
+  for (int i = 0; i < k + m; i++){
+    chunks[i] = (*encoded)[i].c_str();
+  }
+  shec_encode(&chunks[0], &chunks[k], (*encoded)[0].length());
+  return 0;
+}
+
+int ErasureCodeShec::_decode(const set &want_to_read,
+			    const map &chunks,
+			    map *decoded)
+{
+  vector have;
+
+  if (!decoded || !decoded->empty()){
+    return -EINVAL;
+  }
+
+  have.reserve(chunks.size());
+  for (map::const_iterator i = chunks.begin();
+       i != chunks.end();
+       ++i) {
+    have.push_back(i->first);
+  }
+  if (includes(
+	have.begin(), have.end(), want_to_read.begin(), want_to_read.end())) {
+    for (set::iterator i = want_to_read.begin();
+	 i != want_to_read.end();
+	 ++i) {
+      (*decoded)[*i] = chunks.find(*i)->second;
+    }
+    return 0;
+  }
+  unsigned int k = get_data_chunk_count();
+  unsigned int m = get_chunk_count() - k;
+  unsigned blocksize = (*chunks.begin()).second.length();
+  for (unsigned int i =  0; i < k + m; i++) {
+    if (chunks.find(i) == chunks.end()) {
+      bufferlist tmp;
+      bufferptr ptr(buffer::create_aligned(blocksize, SIMD_ALIGN));
+      tmp.push_back(ptr);
+      tmp.claim_append((*decoded)[i]);
+      (*decoded)[i].swap(tmp);
+    } else {
+      (*decoded)[i] = chunks.find(i)->second;
+      (*decoded)[i].rebuild_aligned(SIMD_ALIGN);
+    }
+  }
+  return decode_chunks(want_to_read, chunks, decoded);
+}
+
+int ErasureCodeShec::decode_chunks(const set &want_to_read,
+				   const map &chunks,
+				   map *decoded)
+{
+  unsigned blocksize = (*chunks.begin()).second.length();
+  int erased[k + m];
+  int erased_count = 0;
+  int avails[k + m];
+  char *data[k];
+  char *coding[m];
+
+  for (int i = 0; i < k + m; i++) {
+    erased[i] = 0;
+    if (chunks.find(i) == chunks.end()) {
+      if (want_to_read.count(i) > 0) {
+	erased[i] = 1;
+	erased_count++;
+      }
+      avails[i] = 0;
+    } else {
+      avails[i] = 1;
+    }
+    if (i < k)
+      data[i] = (*decoded)[i].c_str();
+    else
+      coding[i - k] = (*decoded)[i].c_str();
+  }
+
+  if (erased_count > 0) {
+    return shec_decode(erased, avails, data, coding, blocksize);
+  } else {
+    return 0;
+  }
+}
+
+//
+// ErasureCodeShecReedSolomonVandermonde
+//
+
+void ErasureCodeShecReedSolomonVandermonde::shec_encode(char **data,
+					     char **coding,
+					     int blocksize)
+{
+  jerasure_matrix_encode(k, m, w, matrix, data, coding, blocksize);
+}
+
+int ErasureCodeShecReedSolomonVandermonde::shec_decode(int *erased,
+					    int *avails,
+					    char **data,
+					    char **coding,
+					    int blocksize)
+{
+  return shec_matrix_decode(erased, avails, data, coding, blocksize);
+}
+
+unsigned ErasureCodeShecReedSolomonVandermonde::get_alignment() const
+{
+  return k*w*sizeof(int);
+}
+
+int ErasureCodeShecReedSolomonVandermonde::parse(const ErasureCodeProfile &profile)
+{
+  int err = 0;
+  // k, m, c
+  if (profile.find("k") == profile.end() &&
+      profile.find("m") == profile.end() &&
+      profile.find("c") == profile.end()){
+    dout(10) << "(k, m, c) default to " << "(" << DEFAULT_K
+	     << ", " << DEFAULT_M << ", " << DEFAULT_C << ")" << dendl;
+    k = DEFAULT_K; m = DEFAULT_M; c = DEFAULT_C;
+  } else if (profile.find("k") == profile.end() ||
+	     profile.find("m") == profile.end() ||
+	     profile.find("c") == profile.end()){
+    dout(10) << "(k, m, c) must be chosen" << dendl;
+    err = -EINVAL;
+  } else {
+    std::string err_k, err_m, err_c, value_k, value_m, value_c;
+    value_k = profile.find("k")->second;
+    value_m = profile.find("m")->second;
+    value_c = profile.find("c")->second;
+    k = strict_strtol(value_k.c_str(), 10, &err_k);
+    m = strict_strtol(value_m.c_str(), 10, &err_m);
+    c = strict_strtol(value_c.c_str(), 10, &err_c);
+
+    if (!err_k.empty() || !err_m.empty() || !err_c.empty()){
+      if (!err_k.empty()){
+	derr << "could not convert k=" << value_k << "to int" << dendl;
+      } else if (!err_m.empty()){
+	derr << "could not convert m=" << value_m << "to int" << dendl;
+      } else if (!err_c.empty()){
+	derr << "could not convert c=" << value_c << "to int" << dendl;
+      }
+      err = -EINVAL;
+    } else if (k <= 0){
+      derr << "k=" << k
+	   << " must be a positive number" << dendl;
+      err = -EINVAL;
+    } else if (m <= 0){
+      derr << "m=" << m
+	   << " must be a positive number" << dendl;
+      err = -EINVAL;
+    } else if (c <= 0){
+      derr << "c=" << c
+	   << " must be a positive number" << dendl;
+      err = -EINVAL;
+    } else if (m < c){
+      derr << "c=" << c
+	   << " must be less than or equal to m=" << m << dendl;
+      err = -EINVAL;
+    } else if (k > 12){
+      derr << "k=" << k
+	   << " must be less than or equal to 12" << dendl;
+      err = -EINVAL;
+    } else if (k+m > 20){
+      derr << "k+m=" << k+m
+	   << " must be less than or equal to 20" << dendl;
+      err = -EINVAL;
+    } else if (ksecond;
+    w = strict_strtol(value_w.c_str(), 10, &err_w);
+
+    if (!err_w.empty()){
+      derr << "could not convert w=" << value_w << "to int" << dendl;
+      dout(10) << "w default to " << DEFAULT_W << dendl;
+      w = DEFAULT_W;
+
+    } else if (w != 8 && w != 16 && w != 32) {
+      derr << "w=" << w
+	   << " must be one of {8, 16, 32}" << dendl;
+      dout(10) << "w default to " << DEFAULT_W << dendl;
+      w = DEFAULT_W;
+
+    } else {
+      dout(10) << "w set to " << w << dendl;
+    }
+  }
+  return 0;
+}
+
+void ErasureCodeShecReedSolomonVandermonde::prepare()
+{
+  // setup shared encoding table
+  int** p_enc_table =
+    tcache.getEncodingTable(technique, k, m, c, w);
+
+  if (!*p_enc_table) {
+    dout(10) << "[ cache tables ] creating coeff for k=" <<
+      k << " m=" << m << " c=" << c << " w=" << w << dendl;
+
+    matrix = shec_reedsolomon_coding_matrix(technique);
+
+    // either our new created table is stored or if it has been
+    // created in the meanwhile the locally allocated table will be
+    // freed by setEncodingTable
+    matrix = tcache.setEncodingTable(technique, k, m, c, w, matrix);
+
+    dout(10) << "matrix = " << dendl;
+    for (int i=0; i 0) {
+          mat[j] = '1';
+        } else {
+          mat[j] = '0';
+        }
+      }
+      mat[k] = '\0';
+      dout(10) << mat << dendl;
+    }
+  } else {
+    matrix = *p_enc_table;
+  }
+
+  dout(10) << " [ technique ] = " <<
+    ((technique == MULTIPLE) ? "multiple" : "single") << dendl;
+
+  ceph_assert((technique == SINGLE) || (technique == MULTIPLE));
+
+}
+
+// ErasureCodeShec::
+// Mearged from shec.cc.
+
+double ErasureCodeShec::shec_calc_recovery_efficiency1(int k, int m1, int m2, int c1, int c2){
+  int r_eff_k[k];
+  double r_e1;
+  int i, rr, cc, start, end;
+  int first_flag;
+
+  if (m1 < c1 || m2 < c2) return -1;
+  if ((m1 == 0 && c1 != 0) || (m2 == 0 && c2 != 0)) return -1;
+
+  for (i=0; i std::numeric_limits::epsilon() &&
+	      r_e1 < min_r_e1) {
+            min_r_e1 = r_e1;
+            c1_best = c1;
+            m1_best = m1;
+          }
+        }
+      }
+    }
+    m1 = m1_best;
+    c1 = c1_best;
+    m2 = m - m1_best;
+    c2 = c - c1_best;
+  } else {
+    m1 = 0;
+    c1 = 0;
+    m2 = m;
+    c2 = c;
+  }
+
+  // create matrix
+  matrix = reed_sol_vandermonde_coding_matrix(k, m, w);
+
+  for (rr=0; rr 0) {
+          want[j] = 1;
+        }
+      }
+    }
+  }
+
+  if (tcache.getDecodingTableFromCache(decoding_matrix,
+                                       dm_row, dm_column, minimum,
+                                       technique,
+                                       k, m, c, w,
+                                       want, avails)) {
+    return 0;
+  }
+
+  for (unsigned long long pp = 0; pp < (1ull << m); ++pp) {
+
+    // select parity chunks
+    int ek = 0;
+    int p[m];
+    for (int i=0; i < m; ++i) {
+      if (pp & (1ull << i)) {
+        p[ek++] = i;
+      }
+    }
+    if (ek > minp) {
+      continue;
+    }
+
+    // Are selected parity chunks avail?
+    bool ok = true;
+    for (int i = 0; i < ek && ok; i++) {
+      if (!avails[k+p[i]]) {
+        ok = false;
+        break;
+      }
+    }
+
+    if (!ok) {
+      continue;
+    }
+
+    int tmprow[k + m];
+    int tmpcolumn[k];
+    for (int i = 0; i < k + m; i++) {
+      tmprow[i] = 0;
+    }
+    for (int i = 0; i < k; i++) {
+      tmpcolumn[i] = 0;
+    }
+
+    for (int i=0; i < k; i++) {
+      if (want[i] && !avails[i]) {
+        tmpcolumn[i] = 1;
+      }
+    }
+
+    // Parity chunks which are used to recovery erased data chunks, are added to tmprow.
+    for (int i = 0; i < ek; i++) {
+      tmprow[k + p[i]] = 1;
+      for (int j = 0; j < k; j++) {
+        int element = matrix[(p[i]) * k + j];
+        if (element != 0) {
+          tmpcolumn[j] = 1;
+        }
+        if (element != 0 && avails[j] == 1) {
+          tmprow[j] = 1;
+        }
+      }
+    }
+
+    int dup_row = 0, dup_column = 0, dup = 0;
+    for (int i = 0; i < k + m; i++) {
+      if (tmprow[i]) {
+        dup_row++;
+      }
+    }
+
+    for (int i = 0; i < k; i++) {
+      if (tmpcolumn[i]) {
+        dup_column++;
+      }
+    }
+
+    if (dup_row != dup_column) {
+      continue;
+    }
+    dup = dup_row;
+    if (dup == 0) {
+      mindup = dup;
+      for (int i = 0; i < k; i++) {
+        dm_row[i] = -1;
+      }
+      for (int i = 0; i < k; i++) {
+        dm_column[i] = -1;
+      }
+      break;
+    }
+
+    // minimum is updated.
+    if (dup < mindup) {
+      int tmpmat[dup * dup];
+      {
+        for (int i = 0, row = 0; i < k + m; i++) {
+          if (tmprow[i]) {
+            for (int j = 0, column = 0; j < k; j++) {
+              if (tmpcolumn[j]) {
+                if (i < k) {
+                  tmpmat[row * dup + column] = (i == j ? 1 : 0);
+                } else {
+                  tmpmat[row * dup + column] = matrix[(i - k) * k + j];
+                }
+                column++;
+              }
+            }
+            row++;
+          }
+        }
+      }
+      int det = calc_determinant(tmpmat, dup);
+
+      if (det != 0) {
+        int row_id = 0;
+        int column_id = 0;
+        for (int i = 0; i < k; i++) {
+          dm_row[i] = -1;
+        }
+        for (int i = 0; i < k; i++) {
+          dm_column[i] = -1;
+        }
+
+        mindup = dup;
+        for (int i=0; i < k + m; i++) {
+          if (tmprow[i]) {
+            dm_row[row_id++] = i;
+          }
+        }
+        for (int i=0; i < k; i++) {
+          if (tmpcolumn[i]) {
+            dm_column[column_id++] = i;
+          }
+        }
+        minp = ek;
+      }
+    }
+  }
+
+
+  if (mindup == k+1) {
+    fprintf(stderr, "shec_make_decoding_matrix(): can't find recover matrix.\n");
+    return -1;
+  }
+
+  for (int i = 0; i < k + m; i++) {
+    minimum[i] = 0;
+  }
+
+  for (int i=0; i < k && dm_row[i] != -1; i++) {
+    minimum[dm_row[i]] = 1;
+  }
+
+  for (int i = 0; i < k; ++i) {
+    if (want[i] && avails[i]) {
+      minimum[i] = 1;
+    }
+  }
+
+  for (int i = 0; i < m; ++i) {
+    if (want[k + i] && avails[k + i] && !minimum[k + i]) {
+      for (int j = 0; j < k; ++j) {
+        if (matrix[i * k + j] > 0 && !want[j]) {
+          minimum[k + i] = 1;
+          break;
+        }
+      }
+    }
+  }
+
+  if (mindup == 0) {
+    return 0;
+  }
+
+  int tmpmat[mindup * mindup];
+  for (int i=0; i < mindup; i++) {
+    for (int j=0; j < mindup; j++) {
+      if (dm_row[i] < k) {
+        tmpmat[i * mindup + j] = (dm_row[i] == dm_column[j] ? 1 : 0);
+      } else {
+        tmpmat[i * mindup + j] = matrix[(dm_row[i] - k) * k + dm_column[j]];
+      }
+    }
+    if (dm_row[i] < k) {
+      for (int j = 0; j < mindup; j++) {
+        if (dm_row[i] == dm_column[j]) {
+          dm_row[i] = j;
+        }
+      }
+    } else {
+      dm_row[i] -= (k - mindup);
+    }
+  }
+
+  if (prepare) {
+    return 0;
+  }
+
+  int ret = jerasure_invert_matrix(tmpmat, decoding_matrix, mindup, w);
+
+  tcache.putDecodingTableToCache(decoding_matrix, dm_row, dm_column, minimum, technique,
+                                 k, m, c, w, want, avails);
+
+  return ret;
+}
+
+int ErasureCodeShec::shec_matrix_decode(int *want, int *avails, char **data_ptrs,
+                                        char **coding_ptrs, int size)
+{
+  int decoding_matrix[k*k];
+  int dm_row[k], dm_column[k];
+  int minimum[k + m];
+
+  memset(decoding_matrix, 0, sizeof(decoding_matrix));
+  memset(dm_row, -1, sizeof(dm_row));
+  memset(dm_column, -1, sizeof(dm_column));
+  memset(minimum, -1, sizeof(minimum));
+
+  if (w != 8 && w != 16 && w != 32) return -1;
+
+  if (shec_make_decoding_matrix(false, want, avails, decoding_matrix,
+                                dm_row, dm_column, minimum) < 0) {
+    return -1;
+  }
+
+  // Get decoding matrix size
+  int dm_size = 0;
+  for (int i = 0; i < k; i++) {
+    if (dm_row[i] == -1) {
+      break;
+    }
+    dm_size++;
+  }
+
+  char *dm_data_ptrs[dm_size];
+  for (int i = 0; i < dm_size; i++) {
+    dm_data_ptrs[i] = data_ptrs[dm_column[i]];
+  }
+
+  // Decode the data drives
+  for (int i = 0; i < dm_size; i++) {
+    if (!avails[dm_column[i]]) {
+      jerasure_matrix_dotprod(dm_size, w, decoding_matrix + (i * dm_size),
+                              dm_row, i, dm_data_ptrs, coding_ptrs, size);
+    }
+  }
+
+  // Re-encode any erased coding devices
+  for (int i = 0; i < m; i++) {
+    if (want[k+i] && !avails[k+i]) {
+      jerasure_matrix_dotprod(k, w, matrix + (i * k), NULL, i+k,
+                              data_ptrs, coding_ptrs, size);
+    }
+  }
+
+  return 0;
+}
diff --git a/src/erasure-code/shec/ErasureCodeShec.h b/src/erasure-code/shec/ErasureCodeShec.h
new file mode 100644
index 00000000..b53eb538
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodeShec.h
@@ -0,0 +1,147 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 FUJITSU LIMITED
+ * Copyright (C) 2013, 2014 Cloudwatt 
+ * Copyright (C) 2014 Red Hat 
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ * Author: Loic Dachary 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef CEPH_ERASURE_CODE_SHEC_H
+#define CEPH_ERASURE_CODE_SHEC_H
+
+#include "erasure-code/ErasureCode.h"
+#include "ErasureCodeShecTableCache.h"
+
+class ErasureCodeShec : public ErasureCode {
+
+public:
+  enum {
+    MULTIPLE = 0,
+    SINGLE = 1
+  };
+
+  ErasureCodeShecTableCache &tcache;
+  int k;
+  int DEFAULT_K;
+  int m;
+  int DEFAULT_M;
+  int c;
+  int DEFAULT_C;
+  int w;
+  int DEFAULT_W;
+  int technique;
+  int *matrix;
+
+  ErasureCodeShec(const int _technique,
+		  ErasureCodeShecTableCache &_tcache) :
+    tcache(_tcache),
+    k(0),
+    DEFAULT_K(4),
+    m(0),
+    DEFAULT_M(3),
+    c(0),
+    DEFAULT_C(2),
+    w(0),
+    DEFAULT_W(8),
+    technique(_technique),
+    matrix(0)
+  {}
+
+  ~ErasureCodeShec() override {}
+
+  unsigned int get_chunk_count() const override {
+    return k + m;
+  }
+
+  unsigned int get_data_chunk_count() const override {
+    return k;
+  }
+
+  unsigned int get_chunk_size(unsigned int object_size) const override;
+
+  int _minimum_to_decode(const std::set &want_to_read,
+			 const std::set &available_chunks,
+			 std::set *minimum);
+
+  int minimum_to_decode_with_cost(const set &want_to_read,
+					  const map &available,
+					  set *minimum) override;
+
+  int encode(const set &want_to_encode,
+		     const bufferlist &in,
+		     map *encoded) override;
+  int encode_chunks(const set &want_to_encode,
+			    map *encoded) override;
+
+  int _decode(const std::set &want_to_read,
+	      const std::map &chunks,
+	      std::map *decoded) override;
+  int decode_chunks(const set &want_to_read,
+			    const map &chunks,
+			    map *decoded) override;
+
+  int init(ErasureCodeProfile &profile, ostream *ss) override;
+  virtual void shec_encode(char **data,
+			   char **coding,
+			   int blocksize) = 0;
+  virtual int shec_decode(int *erasures,
+			  int *avails,
+			  char **data,
+			  char **coding,
+			  int blocksize) = 0;
+  virtual unsigned get_alignment() const = 0;
+  virtual void prepare() = 0;
+
+  virtual int shec_matrix_decode(int *erased, int *avails,
+                                 char **data_ptrs, char **coding_ptrs, int size);
+  virtual int* shec_reedsolomon_coding_matrix(int is_single);
+
+private:
+  virtual int parse(const ErasureCodeProfile &profile) = 0;
+
+  virtual double shec_calc_recovery_efficiency1(int k, int m1, int m2, int c1, int c2);
+  virtual int shec_make_decoding_matrix(bool prepare,
+                                        int *want, int *avails,
+                                        int *decoding_matrix,
+                                        int *dm_row, int *dm_column,
+                                        int *minimum);
+};
+
+class ErasureCodeShecReedSolomonVandermonde final : public ErasureCodeShec {
+public:
+
+  ErasureCodeShecReedSolomonVandermonde(ErasureCodeShecTableCache &_tcache,
+					int technique = MULTIPLE) :
+    ErasureCodeShec(technique, _tcache)
+  {}
+
+  ~ErasureCodeShecReedSolomonVandermonde() override {
+  }
+
+  void shec_encode(char **data,
+			   char **coding,
+			   int blocksize) override;
+  int shec_decode(int *erasures,
+			  int *avails,
+			  char **data,
+			  char **coding,
+			  int blocksize) override;
+  unsigned get_alignment() const override;
+  void prepare() override;
+private:
+  int parse(const ErasureCodeProfile &profile) override;
+};
+
+#endif
diff --git a/src/erasure-code/shec/ErasureCodeShecTableCache.cc b/src/erasure-code/shec/ErasureCodeShecTableCache.cc
new file mode 100644
index 00000000..891cada6
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodeShecTableCache.cc
@@ -0,0 +1,318 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 FUJITSU LIMITED
+ * Copyright (C) 2014 CERN (Switzerland)
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ * Author: Andreas-Joachim Peters 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+// -----------------------------------------------------------------------------
+#include "ErasureCodeShecTableCache.h"
+#include "common/debug.h"
+// -----------------------------------------------------------------------------
+using namespace std;
+
+// -----------------------------------------------------------------------------
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_osd
+#undef dout_prefix
+#define dout_prefix _tc_prefix(_dout)
+// -----------------------------------------------------------------------------
+
+// -----------------------------------------------------------------------------
+
+static ostream&
+_tc_prefix(std::ostream* _dout) {
+  return *_dout << "ErasureCodeShecTableCache: ";
+}
+
+// -----------------------------------------------------------------------------
+
+ErasureCodeShecTableCache::~ErasureCodeShecTableCache()
+{
+  Mutex::Locker lock(codec_tables_guard);
+
+  // clean-up all allocated tables
+  {
+    codec_technique_tables_t::const_iterator ttables_it;
+    codec_tables_t::const_iterator tables_it;
+    codec_tables_t_::const_iterator tables_it_;
+    codec_tables_t__::const_iterator tables_it__;
+    codec_table_t::const_iterator table_it;
+
+    for (ttables_it = encoding_table.begin(); ttables_it != encoding_table.end(); ++ttables_it) {
+      for (tables_it = ttables_it->second.begin(); tables_it != ttables_it->second.end(); ++tables_it) {
+        for (tables_it_ = tables_it->second.begin(); tables_it_ != tables_it->second.end(); ++tables_it_) {
+          for (tables_it__ = tables_it_->second.begin(); tables_it__ != tables_it_->second.end(); ++tables_it__) {
+            for (table_it = tables_it__->second.begin(); table_it != tables_it__->second.end(); ++table_it) {
+              if (table_it->second) {
+                if (*(table_it->second)) {
+                  delete *(table_it->second);
+                }
+                delete table_it->second;
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  {
+    std::map::const_iterator lru_map_it;
+    std::map::const_iterator lru_list_it;
+
+    for (lru_map_it = decoding_tables.begin();
+         lru_map_it != decoding_tables.end();
+         ++lru_map_it) {
+      if (lru_map_it->second) {
+        delete lru_map_it->second;
+      }
+    }
+
+    for (lru_list_it = decoding_tables_lru.begin();
+         lru_list_it != decoding_tables_lru.end();
+         ++lru_list_it) {
+      if (lru_list_it->second) {
+        delete lru_list_it->second;
+      }
+    }
+  }
+}
+
+ErasureCodeShecTableCache::lru_map_t*
+ErasureCodeShecTableCache::getDecodingTables(int technique) {
+  // the caller must hold the guard mutex:
+  // => Mutex::Locker lock(codec_tables_guard);
+
+  // create an lru_map if not yet allocated
+  if (!decoding_tables[technique]) {
+    decoding_tables[technique] = new lru_map_t;
+  }
+  return decoding_tables[technique];
+}
+
+ErasureCodeShecTableCache::lru_list_t*
+ErasureCodeShecTableCache::getDecodingTablesLru(int technique) {
+  // the caller must hold the guard mutex:
+  // => Mutex::Locker lock(codec_tables_guard);
+
+  // create an lru_list if not yet allocated
+  if (!decoding_tables_lru[technique]) {
+    decoding_tables_lru[technique] = new lru_list_t;
+  }
+  return decoding_tables_lru[technique];
+}
+
+int**
+ErasureCodeShecTableCache::getEncodingTable(int technique, int k, int m, int c, int w)
+{
+  Mutex::Locker lock(codec_tables_guard);
+  return getEncodingTableNoLock(technique,k,m,c,w);
+}
+
+// -----------------------------------------------------------------------------
+
+int**
+ErasureCodeShecTableCache::getEncodingTableNoLock(int technique, int k, int m, int c, int w)
+{
+  // create a pointer to store an encoding table address
+  if (!encoding_table[technique][k][m][c][w]) {
+    encoding_table[technique][k][m][c][w] = new (int*);
+    *encoding_table[technique][k][m][c][w] = 0;
+  }
+  return encoding_table[technique][k][m][c][w];
+}
+
+int*
+ErasureCodeShecTableCache::setEncodingTable(int technique, int k, int m, int c, int w, int* ec_in_table)
+{
+  Mutex::Locker lock(codec_tables_guard);
+  int** ec_out_table = getEncodingTableNoLock(technique, k, m, c, w);
+  if (*ec_out_table) {
+    // somebody might have deposited this table in the meanwhile, so clean
+    // the input table and return the stored one
+    free (ec_in_table);
+    return *ec_out_table;
+  } else {
+    // we store the provided input table and return this one
+    *encoding_table[technique][k][m][c][w] = ec_in_table;
+    return ec_in_table;
+  }
+}
+
+Mutex*
+ErasureCodeShecTableCache::getLock()
+{
+  return &codec_tables_guard;
+}
+
+uint64_t
+ErasureCodeShecTableCache::getDecodingCacheSignature(int k, int m, int c, int w,
+                                                     int *erased, int *avails) {
+  uint64_t signature = 0;
+  signature = (uint64_t)k;
+  signature |= ((uint64_t)m << 6);
+  signature |= ((uint64_t)c << 12);
+  signature |= ((uint64_t)w << 18);
+
+  for (int i=0; i < k+m; i++) {
+    signature |= ((uint64_t)(avails[i] ? 1 : 0) << (24+i));
+  }
+  for (int i=0; i < k+m; i++) {
+    signature |= ((uint64_t)(erased[i] ? 1 : 0) << (44+i));
+  }
+  return signature;
+}
+
+bool
+ErasureCodeShecTableCache::getDecodingTableFromCache(int* decoding_matrix,
+                                                     int* dm_row,
+                                                     int* dm_column,
+                                                     int* minimum,
+                                                     int technique,
+                                                     int k,
+                                                     int m,
+                                                     int c,
+                                                     int w,
+                                                     int* erased,
+                                                     int* avails) {
+  // --------------------------------------------------------------------------
+  // LRU decoding matrix cache
+  // --------------------------------------------------------------------------
+
+  uint64_t signature = getDecodingCacheSignature(k, m, c, w, erased, avails);
+  Mutex::Locker lock(codec_tables_guard);
+
+  dout(20) << "[ get table    ] = " << signature << dendl;
+
+  // we try to fetch a decoding table from an LRU cache
+  lru_map_t* decode_tbls_map =
+    getDecodingTables(technique);
+
+  lru_list_t* decode_tbls_lru =
+    getDecodingTablesLru(technique);
+
+  lru_map_t::iterator decode_tbls_map_it = decode_tbls_map->find(signature);
+  if (decode_tbls_map_it == decode_tbls_map->end()) {
+    return false;
+  }
+
+  dout(20) << "[ cached table ] = " << signature << dendl;
+  // copy parameters out of the cache
+
+  memcpy(decoding_matrix,
+         decode_tbls_map_it->second.second.decoding_matrix,
+         k * k * sizeof(int));
+  memcpy(dm_row,
+         decode_tbls_map_it->second.second.dm_row,
+         k * sizeof(int));
+  memcpy(dm_column,
+         decode_tbls_map_it->second.second.dm_column,
+         k * sizeof(int));
+  memcpy(minimum,
+         decode_tbls_map_it->second.second.minimum,
+         (k+m) * sizeof(int));
+
+  // find item in LRU queue and push back
+  decode_tbls_lru->splice(decode_tbls_lru->end(),
+                          *decode_tbls_lru,
+                          decode_tbls_map_it->second.first);
+  return true;
+}
+
+void
+ErasureCodeShecTableCache::putDecodingTableToCache(int* decoding_matrix,
+                                                   int* dm_row,
+                                                   int* dm_column,
+                                                   int* minimum,
+                                                   int technique,
+                                                   int k,
+                                                   int m,
+                                                   int c,
+                                                   int w,
+                                                   int* erased,
+                                                   int* avails) {
+  // --------------------------------------------------------------------------
+  // LRU decoding matrix cache
+  // --------------------------------------------------------------------------
+
+  Mutex::Locker lock(codec_tables_guard);
+
+  uint64_t signature = getDecodingCacheSignature(k, m, c, w, erased, avails);
+  dout(20) << "[ put table    ] = " << signature << dendl;
+
+  // we store a new table to the cache
+
+  //  bufferptr cachetable;
+
+  lru_map_t* decode_tbls_map =
+    getDecodingTables(technique);
+
+  lru_list_t* decode_tbls_lru =
+    getDecodingTablesLru(technique);
+
+  if (decode_tbls_map->count(signature)) {
+    dout(20) << "[ already on table ] = " << signature << dendl;
+
+    // find item in LRU queue and push back
+    decode_tbls_lru->splice(decode_tbls_lru->end(),
+                            *decode_tbls_lru,
+                            (*decode_tbls_map)[signature].first);
+    return;
+  }
+
+  // evt. shrink the LRU queue/map
+  if ((int)decode_tbls_lru->size() >=
+      ErasureCodeShecTableCache::decoding_tables_lru_length) {
+    dout(20) << "[ shrink lru   ] = " << signature << dendl;
+    // remove from map
+    decode_tbls_map->erase(decode_tbls_lru->front());
+    // remove from lru
+    decode_tbls_lru->pop_front();
+  }
+
+  {
+    dout(20) << "[ store table  ] = " << signature << dendl;
+
+    decode_tbls_lru->push_back(signature);
+
+    // allocate a new buffer
+    lru_list_t::iterator it_end = decode_tbls_lru->end();
+    --it_end;
+
+    lru_entry_t &map_value =
+      (*decode_tbls_map)[signature] =
+      std::make_pair(it_end, DecodingCacheParameter());
+    map_value.second.decoding_matrix = new int[k*k];
+    map_value.second.dm_row = new int[k];
+    map_value.second.dm_column = new int[k];
+    map_value.second.minimum = new int[k+m];
+
+    memcpy(map_value.second.decoding_matrix,
+           decoding_matrix,
+           k * k * sizeof(int));
+    memcpy(map_value.second.dm_row,
+           dm_row,
+           k * sizeof(int));
+    memcpy(map_value.second.dm_column,
+           dm_column,
+           k * sizeof(int));
+    memcpy(map_value.second.minimum,
+           minimum,
+           (k+m) * sizeof(int));
+
+    dout(20) << "[ cache size   ] = " << decode_tbls_lru->size() << dendl;
+  }
+}
diff --git a/src/erasure-code/shec/ErasureCodeShecTableCache.h b/src/erasure-code/shec/ErasureCodeShecTableCache.h
new file mode 100644
index 00000000..e4eaf0f0
--- /dev/null
+++ b/src/erasure-code/shec/ErasureCodeShecTableCache.h
@@ -0,0 +1,124 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 FUJITSU LIMITED
+ * Copyright (C) 2014 CERN (Switzerland)
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ * Author: Andreas-Joachim Peters 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#ifndef CEPH_ERASURE_CODE_SHEC_TABLE_CACHE_H
+#define CEPH_ERASURE_CODE_SHEC_TABLE_CACHE_H
+
+// -----------------------------------------------------------------------------
+#include "common/Mutex.h"
+#include "erasure-code/ErasureCodeInterface.h"
+// -----------------------------------------------------------------------------
+#include 
+// -----------------------------------------------------------------------------
+
+class ErasureCodeShecTableCache {
+  // ---------------------------------------------------------------------------
+  // This class implements a table cache for encoding and decoding matrices.
+  // Encoding matrices are shared for the same (k,m,c,w) combination.
+  // It supplies a decoding matrix lru cache which is shared for identical
+  // matrix types e.g. there is one cache (lru-list + lru-map)
+  // ---------------------------------------------------------------------------
+
+  class DecodingCacheParameter {
+   public:
+    int* decoding_matrix;  // size: k*k
+    int* dm_row;  // size: k
+    int* dm_column;  // size: k
+    int* minimum;  // size: k+m
+    DecodingCacheParameter() {
+      decoding_matrix = 0;
+      dm_row = 0;
+      dm_column = 0;
+      minimum = 0;
+    }
+    ~DecodingCacheParameter() {
+      if (decoding_matrix) {
+        delete[] decoding_matrix;
+      }
+      if (dm_row) {
+        delete[] dm_row;
+      }
+      if (dm_column) {
+        delete[] dm_column;
+      }
+      if (minimum) {
+        delete[] minimum;
+      }
+    }
+  };
+
+ public:
+
+  static const int decoding_tables_lru_length = 10000;
+  typedef std::pair::iterator,
+                    DecodingCacheParameter> lru_entry_t;
+  typedef std::map< int, int** > codec_table_t;
+  typedef std::map< int, codec_table_t > codec_tables_t__;
+  typedef std::map< int, codec_tables_t__ > codec_tables_t_;
+  typedef std::map< int, codec_tables_t_ > codec_tables_t;
+  typedef std::map< int, codec_tables_t > codec_technique_tables_t;
+  // int** matrix = codec_technique_tables_t[technique][k][m][c][w]
+  
+  typedef std::map< uint64_t, lru_entry_t > lru_map_t;
+  typedef std::list< uint64_t > lru_list_t;
+
+ ErasureCodeShecTableCache() :
+  codec_tables_guard("shec-lru-cache")
+    {
+    }
+  
+  virtual ~ErasureCodeShecTableCache();
+  
+  Mutex codec_tables_guard; // mutex used to protect modifications in encoding/decoding table maps
+  
+  bool getDecodingTableFromCache(int* matrix,
+                                 int* dm_row, int* dm_column,
+                                 int* minimum,
+                                 int technique,
+                                 int k, int m, int c, int w,
+                                 int* want, int* avails);
+
+  void putDecodingTableToCache(int* matrix,
+                               int* dm_row, int* dm_column,
+                               int* minimum,
+                               int technique,
+                               int k, int m, int c, int w,
+                               int* want, int* avails);
+
+  int** getEncodingTable(int technique, int k, int m, int c, int w);
+  int** getEncodingTableNoLock(int technique, int k, int m, int c, int w);
+  int* setEncodingTable(int technique, int k, int m, int c, int w, int*);
+  
+ private:
+  // encoding table accessed via table[matrix][k][m][c][w]
+  // decoding table cache accessed via map[matrixtype]
+  // decoding table lru list accessed via list[matrixtype]
+  codec_technique_tables_t encoding_table;
+  std::map decoding_tables;
+  std::map decoding_tables_lru;
+
+  lru_map_t* getDecodingTables(int technique);
+  lru_list_t* getDecodingTablesLru(int technique);
+  uint64_t getDecodingCacheSignature(int k, int m, int c, int w,
+                                     int *want, int *avails);
+
+  Mutex* getLock();
+};
+
+#endif
diff --git a/src/erasure-code/shec/determinant.c b/src/erasure-code/shec/determinant.c
new file mode 100755
index 00000000..15b62c9e
--- /dev/null
+++ b/src/erasure-code/shec/determinant.c
@@ -0,0 +1,94 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2014 Fujitsu Laboratories
+ *
+ * Author: Takanori Nakao 
+ * Author: Takeshi Miyamae 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ */
+
+#include 
+#include 
+#include 
+
+#include "jerasure/include/galois.h"
+
+void print_matrix(int *mat, int dim)
+{
+  int i, j;
+
+  for (i=0; i