diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/.gitignore | 14 | ||||
| -rw-r--r-- | m4/README.txt | 18 | ||||
| -rw-r--r-- | m4/ax_compare_version.m4 | 177 | ||||
| -rw-r--r-- | m4/ax_cxx_compile_stdcxx.m4 | 962 | ||||
| -rw-r--r-- | m4/ax_lua.m4 | 641 | ||||
| -rw-r--r-- | m4/ax_prog_perl_modules.m4 | 77 | ||||
| -rw-r--r-- | m4/ax_pthread.m4 | 332 | ||||
| -rw-r--r-- | m4/ax_python.m4 | 289 | ||||
| -rw-r--r-- | m4/ax_sys_weak_alias.m4 | 333 | ||||
| -rw-r--r-- | m4/libtool-whole-archive.patch | 18 | ||||
| -rw-r--r-- | m4/pkg.m4 | 214 |
11 files changed, 3075 insertions, 0 deletions
diff --git a/m4/.gitignore b/m4/.gitignore new file mode 100644 index 0000000..63f9fa7 --- /dev/null +++ b/m4/.gitignore @@ -0,0 +1,14 @@ +*.m4 +!*.patch + +!ax_compare_version.m4 +!ax_cxx_compile_stdcxx.m4 +!ax_lua.m4 +!ax_prog_perl_modules.m4 +!ax_pthread.m4 +!ax_python.m4 +!ax_sys_weak_alias.m4 +!ax_sys_weak_alias.m4 +!pkg.m4 + +/ac diff --git a/m4/README.txt b/m4/README.txt new file mode 100644 index 0000000..ce06853 --- /dev/null +++ b/m4/README.txt @@ -0,0 +1,18 @@ +This directory contains local additions to/overrides for the Quagga +autoconf build system. + +At this time additions are: + +- m4 files taken from libtool CVS circa august 2004. These have been +imported into Quagga as they are more robust with respect to configuring +libtool support for languages which Quagga does not use. As and when libtool +releases become commonly available with that capability, these can be +removed. The files are: + + argz.m4 + libtool.m4 + ltdl.m4 + ltoptions.m4 + ltsugar.m4 + ltversion.m4 + diff --git a/m4/ax_compare_version.m4 b/m4/ax_compare_version.m4 new file mode 100644 index 0000000..74dc0fd --- /dev/null +++ b/m4/ax_compare_version.m4 @@ -0,0 +1,177 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_compare_version.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_COMPARE_VERSION(VERSION_A, OP, VERSION_B, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) +# +# DESCRIPTION +# +# This macro compares two version strings. Due to the various number of +# minor-version numbers that can exist, and the fact that string +# comparisons are not compatible with numeric comparisons, this is not +# necessarily trivial to do in a autoconf script. This macro makes doing +# these comparisons easy. +# +# The six basic comparisons are available, as well as checking equality +# limited to a certain number of minor-version levels. +# +# The operator OP determines what type of comparison to do, and can be one +# of: +# +# eq - equal (test A == B) +# ne - not equal (test A != B) +# le - less than or equal (test A <= B) +# ge - greater than or equal (test A >= B) +# lt - less than (test A < B) +# gt - greater than (test A > B) +# +# Additionally, the eq and ne operator can have a number after it to limit +# the test to that number of minor versions. +# +# eq0 - equal up to the length of the shorter version +# ne0 - not equal up to the length of the shorter version +# eqN - equal up to N sub-version levels +# neN - not equal up to N sub-version levels +# +# When the condition is true, shell commands ACTION-IF-TRUE are run, +# otherwise shell commands ACTION-IF-FALSE are run. The environment +# variable 'ax_compare_version' is always set to either 'true' or 'false' +# as well. +# +# Examples: +# +# AX_COMPARE_VERSION([3.15.7],[lt],[3.15.8]) +# AX_COMPARE_VERSION([3.15],[lt],[3.15.8]) +# +# would both be true. +# +# AX_COMPARE_VERSION([3.15.7],[eq],[3.15.8]) +# AX_COMPARE_VERSION([3.15],[gt],[3.15.8]) +# +# would both be false. +# +# AX_COMPARE_VERSION([3.15.7],[eq2],[3.15.8]) +# +# would be true because it is only comparing two minor versions. +# +# AX_COMPARE_VERSION([3.15.7],[eq0],[3.15]) +# +# would be true because it is only comparing the lesser number of minor +# versions of the two values. +# +# Note: The characters that separate the version numbers do not matter. An +# empty string is the same as version 0. OP is evaluated by autoconf, not +# configure, so must be a string, not a variable. +# +# The author would like to acknowledge Guido Draheim whose advice about +# the m4_case and m4_ifvaln functions make this macro only include the +# portions necessary to perform the specific comparison specified by the +# OP argument in the final configure script. +# +# LICENSE +# +# Copyright (c) 2008 Tim Toolan <toolan@ele.uri.edu> +# +# 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 11 + +dnl ######################################################################### +AC_DEFUN([AX_COMPARE_VERSION], [ + AC_REQUIRE([AC_PROG_AWK]) + + # Used to indicate true or false condition + ax_compare_version=false + + # Convert the two version strings to be compared into a format that + # allows a simple string comparison. The end result is that a version + # string of the form 1.12.5-r617 will be converted to the form + # 0001001200050617. In other words, each number is zero padded to four + # digits, and non digits are removed. + AS_VAR_PUSHDEF([A],[ax_compare_version_A]) + A=`echo "$1" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \ + -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \ + -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \ + -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \ + -e 's/[[^0-9]]//g'` + + AS_VAR_PUSHDEF([B],[ax_compare_version_B]) + B=`echo "$3" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \ + -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \ + -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \ + -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \ + -e 's/[[^0-9]]//g'` + + dnl # In the case of le, ge, lt, and gt, the strings are sorted as necessary + dnl # then the first line is used to determine if the condition is true. + dnl # The sed right after the echo is to remove any indented white space. + m4_case(m4_tolower($2), + [lt],[ + ax_compare_version=`echo "x$A +x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/false/;s/x${B}/true/;1q"` + ], + [gt],[ + ax_compare_version=`echo "x$A +x$B" | sed 's/^ *//' | sort | sed "s/x${A}/false/;s/x${B}/true/;1q"` + ], + [le],[ + ax_compare_version=`echo "x$A +x$B" | sed 's/^ *//' | sort | sed "s/x${A}/true/;s/x${B}/false/;1q"` + ], + [ge],[ + ax_compare_version=`echo "x$A +x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/true/;s/x${B}/false/;1q"` + ],[ + dnl Split the operator from the subversion count if present. + m4_bmatch(m4_substr($2,2), + [0],[ + # A count of zero means use the length of the shorter version. + # Determine the number of characters in A and B. + ax_compare_version_len_A=`echo "$A" | $AWK '{print(length)}'` + ax_compare_version_len_B=`echo "$B" | $AWK '{print(length)}'` + + # Set A to no more than B's length and B to no more than A's length. + A=`echo "$A" | sed "s/\(.\{$ax_compare_version_len_B\}\).*/\1/"` + B=`echo "$B" | sed "s/\(.\{$ax_compare_version_len_A\}\).*/\1/"` + ], + [[0-9]+],[ + # A count greater than zero means use only that many subversions + A=`echo "$A" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"` + B=`echo "$B" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"` + ], + [.+],[ + AC_WARNING( + [illegal OP numeric parameter: $2]) + ],[]) + + # Pad zeros at end of numbers to make same length. + ax_compare_version_tmp_A="$A`echo $B | sed 's/./0/g'`" + B="$B`echo $A | sed 's/./0/g'`" + A="$ax_compare_version_tmp_A" + + # Check for equality or inequality as necessary. + m4_case(m4_tolower(m4_substr($2,0,2)), + [eq],[ + test "x$A" = "x$B" && ax_compare_version=true + ], + [ne],[ + test "x$A" != "x$B" && ax_compare_version=true + ],[ + AC_WARNING([illegal OP parameter: $2]) + ]) + ]) + + AS_VAR_POPDEF([A])dnl + AS_VAR_POPDEF([B])dnl + + dnl # Execute ACTION-IF-TRUE / ACTION-IF-FALSE. + if test "$ax_compare_version" = "true" ; then + m4_ifvaln([$4],[$4],[:])dnl + m4_ifvaln([$5],[else $5])dnl + fi +]) dnl AX_COMPARE_VERSION diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4 new file mode 100644 index 0000000..9413da6 --- /dev/null +++ b/m4/ax_cxx_compile_stdcxx.m4 @@ -0,0 +1,962 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional]) +# +# DESCRIPTION +# +# Check for baseline language coverage in the compiler for the specified +# version of the C++ standard. If necessary, add switches to CXX and +# CXXCPP to enable support. VERSION may be '11' (for the C++11 standard) +# or '14' (for the C++14 standard). +# +# The second argument, if specified, indicates whether you insist on an +# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g. +# -std=c++11). If neither is specified, you get whatever works, with +# preference for no added switch, and then for an extended mode. +# +# The third argument, if specified 'mandatory' or if left unspecified, +# indicates that baseline support for the specified C++ standard is +# required and that the macro should error out if no mode with that +# support is found. If specified 'optional', then configuration proceeds +# regardless, after defining HAVE_CXX${VERSION} if and only if a +# supporting mode is found. +# +# LICENSE +# +# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> +# Copyright (c) 2012 Zack Weinberg <zackw@panix.com> +# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu> +# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com> +# Copyright (c) 2015 Paul Norman <penorman@mac.com> +# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu> +# Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com> +# Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com> +# Copyright (c) 2020 Jason Merrill <jason@redhat.com> +# +# 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 + +dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro +dnl (serial version number 13). + +AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl + m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"], + [$1], [14], [ax_cxx_compile_alternatives="14 1y"], + [$1], [17], [ax_cxx_compile_alternatives="17 1z"], + [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl + m4_if([$2], [], [], + [$2], [ext], [], + [$2], [noext], [], + [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl + m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true], + [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true], + [$3], [optional], [ax_cxx_compile_cxx$1_required=false], + [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])]) + AC_LANG_PUSH([C++])dnl + ac_success=no + + m4_if([$2], [], [dnl + AC_CACHE_CHECK(whether $CXX supports C++$1 features by default, + ax_cv_cxx_compile_cxx$1, + [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], + [ax_cv_cxx_compile_cxx$1=yes], + [ax_cv_cxx_compile_cxx$1=no])]) + if test x$ax_cv_cxx_compile_cxx$1 = xyes; then + ac_success=yes + fi]) + + m4_if([$2], [noext], [], [dnl + if test x$ac_success = xno; then + for alternative in ${ax_cxx_compile_alternatives}; do + switch="-std=gnu++${alternative}" + cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch]) + AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch, + $cachevar, + [ac_save_CXX="$CXX" + CXX="$CXX $switch" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], + [eval $cachevar=yes], + [eval $cachevar=no]) + CXX="$ac_save_CXX"]) + if eval test x\$$cachevar = xyes; then + CXX="$CXX $switch" + if test -n "$CXXCPP" ; then + CXXCPP="$CXXCPP $switch" + fi + ac_success=yes + break + fi + done + fi]) + + m4_if([$2], [ext], [], [dnl + if test x$ac_success = xno; then + dnl HP's aCC needs +std=c++11 according to: + dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf + dnl Cray's crayCC needs "-h std=c++11" + for alternative in ${ax_cxx_compile_alternatives}; do + for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do + cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch]) + AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch, + $cachevar, + [ac_save_CXX="$CXX" + CXX="$CXX $switch" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], + [eval $cachevar=yes], + [eval $cachevar=no]) + CXX="$ac_save_CXX"]) + if eval test x\$$cachevar = xyes; then + CXX="$CXX $switch" + if test -n "$CXXCPP" ; then + CXXCPP="$CXXCPP $switch" + fi + ac_success=yes + break + fi + done + if test x$ac_success = xyes; then + break + fi + done + fi]) + AC_LANG_POP([C++]) + if test x$ax_cxx_compile_cxx$1_required = xtrue; then + if test x$ac_success = xno; then + AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.]) + fi + fi + if test x$ac_success = xno; then + HAVE_CXX$1=0 + AC_MSG_NOTICE([No compiler with C++$1 support was found]) + else + HAVE_CXX$1=1 + AC_DEFINE(HAVE_CXX$1,1, + [define if the compiler supports basic C++$1 syntax]) + fi + AC_SUBST(HAVE_CXX$1) +]) + + +dnl Test body for checking C++11 support + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11], + _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 +) + + +dnl Test body for checking C++14 support + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14], + _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 + _AX_CXX_COMPILE_STDCXX_testbody_new_in_14 +) + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17], + _AX_CXX_COMPILE_STDCXX_testbody_new_in_11 + _AX_CXX_COMPILE_STDCXX_testbody_new_in_14 + _AX_CXX_COMPILE_STDCXX_testbody_new_in_17 +) + +dnl Tests for new features in C++11 + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[ + +// If the compiler admits that it is not ready for C++11, why torture it? +// Hopefully, this will speed up the test. + +#ifndef __cplusplus + +#error "This is not a C++ compiler" + +#elif __cplusplus < 201103L + +#error "This is not a C++11 compiler" + +#else + +namespace cxx11 +{ + + namespace test_static_assert + { + + template <typename T> + struct check + { + static_assert(sizeof(int) <= sizeof(T), "not big enough"); + }; + + } + + namespace test_final_override + { + + struct Base + { + virtual ~Base() {} + virtual void f() {} + }; + + struct Derived : public Base + { + virtual ~Derived() override {} + virtual void f() override {} + }; + + } + + namespace test_double_right_angle_brackets + { + + template < typename T > + struct check {}; + + typedef check<void> single_type; + typedef check<check<void>> double_type; + typedef check<check<check<void>>> triple_type; + typedef check<check<check<check<void>>>> quadruple_type; + + } + + namespace test_decltype + { + + int + f() + { + int a = 1; + decltype(a) b = 2; + return a + b; + } + + } + + namespace test_type_deduction + { + + template < typename T1, typename T2 > + struct is_same + { + static const bool value = false; + }; + + template < typename T > + struct is_same<T, T> + { + static const bool value = true; + }; + + template < typename T1, typename T2 > + auto + add(T1 a1, T2 a2) -> decltype(a1 + a2) + { + return a1 + a2; + } + + int + test(const int c, volatile int v) + { + static_assert(is_same<int, decltype(0)>::value == true, ""); + static_assert(is_same<int, decltype(c)>::value == false, ""); + static_assert(is_same<int, decltype(v)>::value == false, ""); + auto ac = c; + auto av = v; + auto sumi = ac + av + 'x'; + auto sumf = ac + av + 1.0; + static_assert(is_same<int, decltype(ac)>::value == true, ""); + static_assert(is_same<int, decltype(av)>::value == true, ""); + static_assert(is_same<int, decltype(sumi)>::value == true, ""); + static_assert(is_same<int, decltype(sumf)>::value == false, ""); + static_assert(is_same<int, decltype(add(c, v))>::value == true, ""); + return (sumf > 0.0) ? sumi : add(c, v); + } + + } + + namespace test_noexcept + { + + int f() { return 0; } + int g() noexcept { return 0; } + + static_assert(noexcept(f()) == false, ""); + static_assert(noexcept(g()) == true, ""); + + } + + namespace test_constexpr + { + + template < typename CharT > + unsigned long constexpr + strlen_c_r(const CharT *const s, const unsigned long acc) noexcept + { + return *s ? strlen_c_r(s + 1, acc + 1) : acc; + } + + template < typename CharT > + unsigned long constexpr + strlen_c(const CharT *const s) noexcept + { + return strlen_c_r(s, 0UL); + } + + static_assert(strlen_c("") == 0UL, ""); + static_assert(strlen_c("1") == 1UL, ""); + static_assert(strlen_c("example") == 7UL, ""); + static_assert(strlen_c("another\0example") == 7UL, ""); + + } + + namespace test_rvalue_references + { + + template < int N > + struct answer + { + static constexpr int value = N; + }; + + answer<1> f(int&) { return answer<1>(); } + answer<2> f(const int&) { return answer<2>(); } + answer<3> f(int&&) { return answer<3>(); } + + void + test() + { + int i = 0; + const int c = 0; + static_assert(decltype(f(i))::value == 1, ""); + static_assert(decltype(f(c))::value == 2, ""); + static_assert(decltype(f(0))::value == 3, ""); + } + + } + + namespace test_uniform_initialization + { + + struct test + { + static const int zero {}; + static const int one {1}; + }; + + static_assert(test::zero == 0, ""); + static_assert(test::one == 1, ""); + + } + + namespace test_lambdas + { + + void + test1() + { + auto lambda1 = [](){}; + auto lambda2 = lambda1; + lambda1(); + lambda2(); + } + + int + test2() + { + auto a = [](int i, int j){ return i + j; }(1, 2); + auto b = []() -> int { return '0'; }(); + auto c = [=](){ return a + b; }(); + auto d = [&](){ return c; }(); + auto e = [a, &b](int x) mutable { + const auto identity = [](int y){ return y; }; + for (auto i = 0; i < a; ++i) + a += b--; + return x + identity(a + b); + }(0); + return a + b + c + d + e; + } + + int + test3() + { + const auto nullary = [](){ return 0; }; + const auto unary = [](int x){ return x; }; + using nullary_t = decltype(nullary); + using unary_t = decltype(unary); + const auto higher1st = [](nullary_t f){ return f(); }; + const auto higher2nd = [unary](nullary_t f1){ + return [unary, f1](unary_t f2){ return f2(unary(f1())); }; + }; + return higher1st(nullary) + higher2nd(nullary)(unary); + } + + } + + namespace test_variadic_templates + { + + template <int...> + struct sum; + + template <int N0, int... N1toN> + struct sum<N0, N1toN...> + { + static constexpr auto value = N0 + sum<N1toN...>::value; + }; + + template <> + struct sum<> + { + static constexpr auto value = 0; + }; + + static_assert(sum<>::value == 0, ""); + static_assert(sum<1>::value == 1, ""); + static_assert(sum<23>::value == 23, ""); + static_assert(sum<1, 2>::value == 3, ""); + static_assert(sum<5, 5, 11>::value == 21, ""); + static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, ""); + + } + + // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae + // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function + // because of this. + namespace test_template_alias_sfinae + { + + struct foo {}; + + template<typename T> + using member = typename T::member_type; + + template<typename T> + void func(...) {} + + template<typename T> + void func(member<T>*) {} + + void test(); + + void test() { func<foo>(0); } + + } + +} // namespace cxx11 + +#endif // __cplusplus >= 201103L + +]]) + + +dnl Tests for new features in C++14 + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[ + +// If the compiler admits that it is not ready for C++14, why torture it? +// Hopefully, this will speed up the test. + +#ifndef __cplusplus + +#error "This is not a C++ compiler" + +#elif __cplusplus < 201402L + +#error "This is not a C++14 compiler" + +#else + +namespace cxx14 +{ + + namespace test_polymorphic_lambdas + { + + int + test() + { + const auto lambda = [](auto&&... args){ + const auto istiny = [](auto x){ + return (sizeof(x) == 1UL) ? 1 : 0; + }; + const int aretiny[] = { istiny(args)... }; + return aretiny[0]; + }; + return lambda(1, 1L, 1.0f, '1'); + } + + } + + namespace test_binary_literals + { + + constexpr auto ivii = 0b0000000000101010; + static_assert(ivii == 42, "wrong value"); + + } + + namespace test_generalized_constexpr + { + + template < typename CharT > + constexpr unsigned long + strlen_c(const CharT *const s) noexcept + { + auto length = 0UL; + for (auto p = s; *p; ++p) + ++length; + return length; + } + + static_assert(strlen_c("") == 0UL, ""); + static_assert(strlen_c("x") == 1UL, ""); + static_assert(strlen_c("test") == 4UL, ""); + static_assert(strlen_c("another\0test") == 7UL, ""); + + } + + namespace test_lambda_init_capture + { + + int + test() + { + auto x = 0; + const auto lambda1 = [a = x](int b){ return a + b; }; + const auto lambda2 = [a = lambda1(x)](){ return a; }; + return lambda2(); + } + + } + + namespace test_digit_separators + { + + constexpr auto ten_million = 100'000'000; + static_assert(ten_million == 100000000, ""); + + } + + namespace test_return_type_deduction + { + + auto f(int& x) { return x; } + decltype(auto) g(int& x) { return x; } + + template < typename T1, typename T2 > + struct is_same + { + static constexpr auto value = false; + }; + + template < typename T > + struct is_same<T, T> + { + static constexpr auto value = true; + }; + + int + test() + { + auto x = 0; + static_assert(is_same<int, decltype(f(x))>::value, ""); + static_assert(is_same<int&, decltype(g(x))>::value, ""); + return x; + } + + } + +} // namespace cxx14 + +#endif // __cplusplus >= 201402L + +]]) + + +dnl Tests for new features in C++17 + +m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ + +// If the compiler admits that it is not ready for C++17, why torture it? +// Hopefully, this will speed up the test. + +#ifndef __cplusplus + +#error "This is not a C++ compiler" + +#elif __cplusplus < 201703L + +#error "This is not a C++17 compiler" + +#else + +#include <initializer_list> +#include <utility> +#include <type_traits> + +namespace cxx17 +{ + + namespace test_constexpr_lambdas + { + + constexpr int foo = [](){return 42;}(); + + } + + namespace test::nested_namespace::definitions + { + + } + + namespace test_fold_expression + { + + template<typename... Args> + int multiply(Args... args) + { + return (args * ... * 1); + } + + template<typename... Args> + bool all(Args... args) + { + return (args && ...); + } + + } + + namespace test_extended_static_assert + { + + static_assert (true); + + } + + namespace test_auto_brace_init_list + { + + auto foo = {5}; + auto bar {5}; + + static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value); + static_assert(std::is_same<int, decltype(bar)>::value); + } + + namespace test_typename_in_template_template_parameter + { + + template<template<typename> typename X> struct D; + + } + + namespace test_fallthrough_nodiscard_maybe_unused_attributes + { + + int f1() + { + return 42; + } + + [[nodiscard]] int f2() + { + [[maybe_unused]] auto unused = f1(); + + switch (f1()) + { + case 17: + f1(); + [[fallthrough]]; + case 42: + f1(); + } + return f1(); + } + + } + + namespace test_extended_aggregate_initialization + { + + struct base1 + { + int b1, b2 = 42; + }; + + struct base2 + { + base2() { + b3 = 42; + } + int b3; + }; + + struct derived : base1, base2 + { + int d; + }; + + derived d1 {{1, 2}, {}, 4}; // full initialization + derived d2 {{}, {}, 4}; // value-initialized bases + + } + + namespace test_general_range_based_for_loop + { + + struct iter + { + int i; + + int& operator* () + { + return i; + } + + const int& operator* () const + { + return i; + } + + iter& operator++() + { + ++i; + return *this; + } + }; + + struct sentinel + { + int i; + }; + + bool operator== (const iter& i, const sentinel& s) + { + return i.i == s.i; + } + + bool operator!= (const iter& i, const sentinel& s) + { + return !(i == s); + } + + struct range + { + iter begin() const + { + return {0}; + } + + sentinel end() const + { + return {5}; + } + }; + + void f() + { + range r {}; + + for (auto i : r) + { + [[maybe_unused]] auto v = i; + } + } + + } + + namespace test_lambda_capture_asterisk_this_by_value + { + + struct t + { + int i; + int foo() + { + return [*this]() + { + return i; + }(); + } + }; + + } + + namespace test_enum_class_construction + { + + enum class byte : unsigned char + {}; + + byte foo {42}; + + } + + namespace test_constexpr_if + { + + template <bool cond> + int f () + { + if constexpr(cond) + { + return 13; + } + else + { + return 42; + } + } + + } + + namespace test_selection_statement_with_initializer + { + + int f() + { + return 13; + } + + int f2() + { + if (auto i = f(); i > 0) + { + return 3; + } + + switch (auto i = f(); i + 4) + { + case 17: + return 2; + + default: + return 1; + } + } + + } + + namespace test_template_argument_deduction_for_class_templates + { + + template <typename T1, typename T2> + struct pair + { + pair (T1 p1, T2 p2) + : m1 {p1}, + m2 {p2} + {} + + T1 m1; + T2 m2; + }; + + void f() + { + [[maybe_unused]] auto p = pair{13, 42u}; + } + + } + + namespace test_non_type_auto_template_parameters + { + + template <auto n> + struct B + {}; + + B<5> b1; + B<'a'> b2; + + } + + namespace test_structured_bindings + { + + int arr[2] = { 1, 2 }; + std::pair<int, int> pr = { 1, 2 }; + + auto f1() -> int(&)[2] + { + return arr; + } + + auto f2() -> std::pair<int, int>& + { + return pr; + } + + struct S + { + int x1 : 2; + volatile double y1; + }; + + S f3() + { + return {}; + } + + auto [ x1, y1 ] = f1(); + auto& [ xr1, yr1 ] = f1(); + auto [ x2, y2 ] = f2(); + auto& [ xr2, yr2 ] = f2(); + const auto [ x3, y3 ] = f3(); + + } + + namespace test_exception_spec_type_system + { + + struct Good {}; + struct Bad {}; + + void g1() noexcept; + void g2(); + + template<typename T> + Bad + f(T*, T*); + + template<typename T1, typename T2> + Good + f(T1*, T2*); + + static_assert (std::is_same_v<Good, decltype(f(g1, g2))>); + + } + + namespace test_inline_variables + { + + template<class T> void f(T) + {} + + template<class T> inline T g(T) + { + return T{}; + } + + template<> inline void f<>(int) + {} + + template<> int g<>(int) + { + return 5; + } + + } + +} // namespace cxx17 + +#endif // __cplusplus < 201703L + +]]) diff --git a/m4/ax_lua.m4 b/m4/ax_lua.m4 new file mode 100644 index 0000000..f4236cf --- /dev/null +++ b/m4/ax_lua.m4 @@ -0,0 +1,641 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_lua.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PROG_LUA[([MINIMUM-VERSION], [TOO-BIG-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])] +# AX_LUA_HEADERS[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])] +# AX_LUA_LIBS[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])] +# AX_LUA_READLINE[([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])] +# +# DESCRIPTION +# +# Detect a Lua interpreter, optionally specifying a minimum and maximum +# version number. Set up important Lua paths, such as the directories in +# which to install scripts and modules (shared libraries). +# +# Also detect Lua headers and libraries. The Lua version contained in the +# header is checked to match the Lua interpreter version exactly. When +# searching for Lua libraries, the version number is used as a suffix. +# This is done with the goal of supporting multiple Lua installs (5.1, +# 5.2, and 5.3 side-by-side). +# +# A note on compatibility with previous versions: This file has been +# mostly rewritten for serial 18. Most developers should be able to use +# these macros without needing to modify configure.ac. Care has been taken +# to preserve each macro's behavior, but there are some differences: +# +# 1) AX_WITH_LUA is deprecated; it now expands to the exact same thing as +# AX_PROG_LUA with no arguments. +# +# 2) AX_LUA_HEADERS now checks that the version number defined in lua.h +# matches the interpreter version. AX_LUA_HEADERS_VERSION is therefore +# unnecessary, so it is deprecated and does not expand to anything. +# +# 3) The configure flag --with-lua-suffix no longer exists; the user +# should instead specify the LUA precious variable on the command line. +# See the AX_PROG_LUA description for details. +# +# Please read the macro descriptions below for more information. +# +# This file was inspired by Andrew Dalke's and James Henstridge's +# python.m4 and Tom Payne's, Matthieu Moy's, and Reuben Thomas's ax_lua.m4 +# (serial 17). Basically, this file is a mash-up of those two files. I +# like to think it combines the best of the two! +# +# AX_PROG_LUA: Search for the Lua interpreter, and set up important Lua +# paths. Adds precious variable LUA, which may contain the path of the Lua +# interpreter. If LUA is blank, the user's path is searched for an +# suitable interpreter. +# +# If MINIMUM-VERSION is supplied, then only Lua interpreters with a +# version number greater or equal to MINIMUM-VERSION will be accepted. If +# TOO-BIG-VERSION is also supplied, then only Lua interpreters with a +# version number greater or equal to MINIMUM-VERSION and less than +# TOO-BIG-VERSION will be accepted. +# +# The Lua version number, LUA_VERSION, is found from the interpreter, and +# substituted. LUA_PLATFORM is also found, but not currently supported (no +# standard representation). +# +# Finally, the macro finds four paths: +# +# luadir Directory to install Lua scripts. +# pkgluadir $luadir/$PACKAGE +# luaexecdir Directory to install Lua modules. +# pkgluaexecdir $luaexecdir/$PACKAGE +# +# These paths are found based on $prefix, $exec_prefix, Lua's +# package.path, and package.cpath. The first path of package.path +# beginning with $prefix is selected as luadir. The first path of +# package.cpath beginning with $exec_prefix is used as luaexecdir. This +# should work on all reasonable Lua installations. If a path cannot be +# determined, a default path is used. Of course, the user can override +# these later when invoking make. +# +# luadir Default: $prefix/share/lua/$LUA_VERSION +# luaexecdir Default: $exec_prefix/lib/lua/$LUA_VERSION +# +# These directories can be used by Automake as install destinations. The +# variable name minus 'dir' needs to be used as a prefix to the +# appropriate Automake primary, e.g. lua_SCRIPS or luaexec_LIBRARIES. +# +# If an acceptable Lua interpreter is found, then ACTION-IF-FOUND is +# performed, otherwise ACTION-IF-NOT-FOUND is preformed. If ACTION-IF-NOT- +# FOUND is blank, then it will default to printing an error. To prevent +# the default behavior, give ':' as an action. +# +# AX_LUA_HEADERS: Search for Lua headers. Requires that AX_PROG_LUA be +# expanded before this macro. Adds precious variable LUA_INCLUDE, which +# may contain Lua specific include flags, e.g. -I/usr/include/lua5.1. If +# LUA_INCLUDE is blank, then this macro will attempt to find suitable +# flags. +# +# LUA_INCLUDE can be used by Automake to compile Lua modules or +# executables with embedded interpreters. The *_CPPFLAGS variables should +# be used for this purpose, e.g. myprog_CPPFLAGS = $(LUA_INCLUDE). +# +# This macro searches for the header lua.h (and others). The search is +# performed with a combination of CPPFLAGS, CPATH, etc, and LUA_INCLUDE. +# If the search is unsuccessful, then some common directories are tried. +# If the headers are then found, then LUA_INCLUDE is set accordingly. +# +# The paths automatically searched are: +# +# * /usr/include/luaX.Y +# * /usr/include/lua/X.Y +# * /usr/include/luaXY +# * /usr/local/include/luaX.Y +# * /usr/local/include/lua-X.Y +# * /usr/local/include/lua/X.Y +# * /usr/local/include/luaXY +# +# (Where X.Y is the Lua version number, e.g. 5.1.) +# +# The Lua version number found in the headers is always checked to match +# the Lua interpreter's version number. Lua headers with mismatched +# version numbers are not accepted. +# +# If headers are found, then ACTION-IF-FOUND is performed, otherwise +# ACTION-IF-NOT-FOUND is performed. If ACTION-IF-NOT-FOUND is blank, then +# it will default to printing an error. To prevent the default behavior, +# set the action to ':'. +# +# AX_LUA_LIBS: Search for Lua libraries. Requires that AX_PROG_LUA be +# expanded before this macro. Adds precious variable LUA_LIB, which may +# contain Lua specific linker flags, e.g. -llua5.1. If LUA_LIB is blank, +# then this macro will attempt to find suitable flags. +# +# LUA_LIB can be used by Automake to link Lua modules or executables with +# embedded interpreters. The *_LIBADD and *_LDADD variables should be used +# for this purpose, e.g. mymod_LIBADD = $(LUA_LIB). +# +# This macro searches for the Lua library. More technically, it searches +# for a library containing the function lua_load. The search is performed +# with a combination of LIBS, LIBRARY_PATH, and LUA_LIB. +# +# If the search determines that some linker flags are missing, then those +# flags will be added to LUA_LIB. +# +# If libraries are found, then ACTION-IF-FOUND is performed, otherwise +# ACTION-IF-NOT-FOUND is performed. If ACTION-IF-NOT-FOUND is blank, then +# it will default to printing an error. To prevent the default behavior, +# set the action to ':'. +# +# AX_LUA_READLINE: Search for readline headers and libraries. Requires the +# AX_LIB_READLINE macro, which is provided by ax_lib_readline.m4 from the +# Autoconf Archive. +# +# If a readline compatible library is found, then ACTION-IF-FOUND is +# performed, otherwise ACTION-IF-NOT-FOUND is performed. +# +# LICENSE +# +# Copyright (c) 2015 Reuben Thomas <rrt@sc3d.org> +# Copyright (c) 2014 Tim Perkins <tprk77@gmail.com> +# +# 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 <http://www.gnu.org/licenses/>. +# +# 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 39 + +dnl ========================================================================= +dnl AX_PROG_LUA([MINIMUM-VERSION], [TOO-BIG-VERSION], +dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +dnl ========================================================================= +AC_DEFUN([AX_PROG_LUA], +[ + dnl Check for required tools. + AC_REQUIRE([AC_PROG_GREP]) + AC_REQUIRE([AC_PROG_SED]) + + dnl Make LUA a precious variable. + AC_ARG_VAR([LUA], [The Lua interpreter, e.g. /usr/bin/lua5.1]) + + dnl Find a Lua interpreter. + m4_define_default([_AX_LUA_INTERPRETER_LIST], + [lua lua5.3 lua53 lua5.2 lua52 lua5.1 lua51 lua50]) + + m4_if([$1], [], + [ dnl No version check is needed. Find any Lua interpreter. + AS_IF([test "x$LUA" = 'x'], + [AC_PATH_PROGS([LUA], [_AX_LUA_INTERPRETER_LIST], [:])]) + ax_display_LUA='lua' + + AS_IF([test "x$LUA" != 'x:'], + [ dnl At least check if this is a Lua interpreter. + AC_MSG_CHECKING([if $LUA is a Lua interpreter]) + _AX_LUA_CHK_IS_INTRP([$LUA], + [AC_MSG_RESULT([yes])], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([not a Lua interpreter]) + ]) + ]) + ], + [ dnl A version check is needed. + AS_IF([test "x$LUA" != 'x'], + [ dnl Check if this is a Lua interpreter. + AC_MSG_CHECKING([if $LUA is a Lua interpreter]) + _AX_LUA_CHK_IS_INTRP([$LUA], + [AC_MSG_RESULT([yes])], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([not a Lua interpreter]) + ]) + dnl Check the version. + m4_if([$2], [], + [_ax_check_text="whether $LUA version >= $1"], + [_ax_check_text="whether $LUA version >= $1, < $2"]) + AC_MSG_CHECKING([$_ax_check_text]) + _AX_LUA_CHK_VER([$LUA], [$1], [$2], + [AC_MSG_RESULT([yes])], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([version is out of range for specified LUA])]) + ax_display_LUA=$LUA + ], + [ dnl Try each interpreter until we find one that satisfies VERSION. + m4_if([$2], [], + [_ax_check_text="for a Lua interpreter with version >= $1"], + [_ax_check_text="for a Lua interpreter with version >= $1, < $2"]) + AC_CACHE_CHECK([$_ax_check_text], + [ax_cv_pathless_LUA], + [ for ax_cv_pathless_LUA in _AX_LUA_INTERPRETER_LIST none; do + test "x$ax_cv_pathless_LUA" = 'xnone' && break + _AX_LUA_CHK_IS_INTRP([$ax_cv_pathless_LUA], [], [continue]) + _AX_LUA_CHK_VER([$ax_cv_pathless_LUA], [$1], [$2], [break]) + done + ]) + dnl Set $LUA to the absolute path of $ax_cv_pathless_LUA. + AS_IF([test "x$ax_cv_pathless_LUA" = 'xnone'], + [LUA=':'], + [AC_PATH_PROG([LUA], [$ax_cv_pathless_LUA])]) + ax_display_LUA=$ax_cv_pathless_LUA + ]) + ]) + + AS_IF([test "x$LUA" = 'x:'], + [ dnl Run any user-specified action, or abort. + m4_default([$4], [AC_MSG_ERROR([cannot find suitable Lua interpreter])]) + ], + [ dnl Query Lua for its version number. + AC_CACHE_CHECK([for $ax_display_LUA version], + [ax_cv_lua_version], + [ dnl Get the interpreter version in X.Y format. This should work for + dnl interpreters version 5.0 and beyond. + ax_cv_lua_version=[`$LUA -e ' + -- return a version number in X.Y format + local _, _, ver = string.find(_VERSION, "^Lua (%d+%.%d+)") + print(ver)'`] + ]) + AS_IF([test "x$ax_cv_lua_version" = 'x'], + [AC_MSG_ERROR([invalid Lua version number])]) + AC_SUBST([LUA_VERSION], [$ax_cv_lua_version]) + AC_SUBST([LUA_SHORT_VERSION], [`echo "$LUA_VERSION" | $SED 's|\.||'`]) + + dnl The following check is not supported: + dnl At times (like when building shared libraries) you may want to know + dnl which OS platform Lua thinks this is. + AC_CACHE_CHECK([for $ax_display_LUA platform], + [ax_cv_lua_platform], + [ax_cv_lua_platform=[`$LUA -e 'print("unknown")'`]]) + AC_SUBST([LUA_PLATFORM], [$ax_cv_lua_platform]) + + dnl Use the values of $prefix and $exec_prefix for the corresponding + dnl values of LUA_PREFIX and LUA_EXEC_PREFIX. These are made distinct + dnl variables so they can be overridden if need be. However, the general + dnl consensus is that you shouldn't need this ability. + AC_SUBST([LUA_PREFIX], ['${prefix}']) + AC_SUBST([LUA_EXEC_PREFIX], ['${exec_prefix}']) + + dnl Lua provides no way to query the script directory, and instead + dnl provides LUA_PATH. However, we should be able to make a safe educated + dnl guess. If the built-in search path contains a directory which is + dnl prefixed by $prefix, then we can store scripts there. The first + dnl matching path will be used. + AC_CACHE_CHECK([for $ax_display_LUA script directory], + [ax_cv_lua_luadir], + [ AS_IF([test "x$prefix" = 'xNONE'], + [ax_lua_prefix=$ac_default_prefix], + [ax_lua_prefix=$prefix]) + + dnl Initialize to the default path. + ax_cv_lua_luadir="$LUA_PREFIX/share/lua/$LUA_VERSION" + + dnl Try to find a path with the prefix. + _AX_LUA_FND_PRFX_PTH([$LUA], [$ax_lua_prefix], [script]) + AS_IF([test "x$ax_lua_prefixed_path" != 'x'], + [ dnl Fix the prefix. + _ax_strip_prefix=`echo "$ax_lua_prefix" | $SED 's|.|.|g'` + ax_cv_lua_luadir=`echo "$ax_lua_prefixed_path" | \ + $SED "s|^$_ax_strip_prefix|$LUA_PREFIX|"` + ]) + ]) + AC_SUBST([luadir], [$ax_cv_lua_luadir]) + AC_SUBST([pkgluadir], [\${luadir}/$PACKAGE]) + + dnl Lua provides no way to query the module directory, and instead + dnl provides LUA_PATH. However, we should be able to make a safe educated + dnl guess. If the built-in search path contains a directory which is + dnl prefixed by $exec_prefix, then we can store modules there. The first + dnl matching path will be used. + AC_CACHE_CHECK([for $ax_display_LUA module directory], + [ax_cv_lua_luaexecdir], + [ AS_IF([test "x$exec_prefix" = 'xNONE'], + [ax_lua_exec_prefix=$ax_lua_prefix], + [ax_lua_exec_prefix=$exec_prefix]) + + dnl Initialize to the default path. + ax_cv_lua_luaexecdir="$LUA_EXEC_PREFIX/lib/lua/$LUA_VERSION" + + dnl Try to find a path with the prefix. + _AX_LUA_FND_PRFX_PTH([$LUA], + [$ax_lua_exec_prefix], [module]) + AS_IF([test "x$ax_lua_prefixed_path" != 'x'], + [ dnl Fix the prefix. + _ax_strip_prefix=`echo "$ax_lua_exec_prefix" | $SED 's|.|.|g'` + ax_cv_lua_luaexecdir=`echo "$ax_lua_prefixed_path" | \ + $SED "s|^$_ax_strip_prefix|$LUA_EXEC_PREFIX|"` + ]) + ]) + AC_SUBST([luaexecdir], [$ax_cv_lua_luaexecdir]) + AC_SUBST([pkgluaexecdir], [\${luaexecdir}/$PACKAGE]) + + dnl Run any user specified action. + $3 + ]) +]) + +dnl AX_WITH_LUA is now the same thing as AX_PROG_LUA. +AC_DEFUN([AX_WITH_LUA], +[ + AC_MSG_WARN([[$0 is deprecated, please use AX_PROG_LUA instead]]) + AX_PROG_LUA +]) + + +dnl ========================================================================= +dnl _AX_LUA_CHK_IS_INTRP(PROG, [ACTION-IF-TRUE], [ACTION-IF-FALSE]) +dnl ========================================================================= +AC_DEFUN([_AX_LUA_CHK_IS_INTRP], +[ + dnl A minimal Lua factorial to prove this is an interpreter. This should work + dnl for Lua interpreters version 5.0 and beyond. + _ax_lua_factorial=[`$1 2>/dev/null -e ' + -- a simple factorial + function fact (n) + if n == 0 then + return 1 + else + return n * fact(n-1) + end + end + print("fact(5) is " .. fact(5))'`] + AS_IF([test "$_ax_lua_factorial" = 'fact(5) is 120'], + [$2], [$3]) +]) + + +dnl ========================================================================= +dnl _AX_LUA_CHK_VER(PROG, MINIMUM-VERSION, [TOO-BIG-VERSION], +dnl [ACTION-IF-TRUE], [ACTION-IF-FALSE]) +dnl ========================================================================= +AC_DEFUN([_AX_LUA_CHK_VER], +[ + dnl Check that the Lua version is within the bounds. Only the major and minor + dnl version numbers are considered. This should work for Lua interpreters + dnl version 5.0 and beyond. + _ax_lua_good_version=[`$1 -e ' + -- a script to compare versions + function verstr2num(verstr) + local _, _, majorver, minorver = string.find(verstr, "^(%d+)%.(%d+)") + if majorver and minorver then + return tonumber(majorver) * 100 + tonumber(minorver) + end + end + local minver = verstr2num("$2") + local _, _, trimver = string.find(_VERSION, "^Lua (.*)") + local ver = verstr2num(trimver) + local maxver = verstr2num("$3") or 1e9 + if minver <= ver and ver < maxver then + print("yes") + else + print("no") + end'`] + AS_IF([test "x$_ax_lua_good_version" = "xyes"], + [$4], [$5]) +]) + + +dnl ========================================================================= +dnl _AX_LUA_FND_PRFX_PTH(PROG, PREFIX, SCRIPT-OR-MODULE-DIR) +dnl ========================================================================= +AC_DEFUN([_AX_LUA_FND_PRFX_PTH], +[ + dnl Get the script or module directory by querying the Lua interpreter, + dnl filtering on the given prefix, and selecting the shallowest path. If no + dnl path is found matching the prefix, the result will be an empty string. + dnl The third argument determines the type of search, it can be 'script' or + dnl 'module'. Supplying 'script' will perform the search with package.path + dnl and LUA_PATH, and supplying 'module' will search with package.cpath and + dnl LUA_CPATH. This is done for compatibility with Lua 5.0. + + ax_lua_prefixed_path=[`$1 -e ' + -- get the path based on search type + local searchtype = "$3" + local paths = "" + if searchtype == "script" then + paths = (package and package.path) or LUA_PATH + elseif searchtype == "module" then + paths = (package and package.cpath) or LUA_CPATH + end + -- search for the prefix + local prefix = "'$2'" + local minpath = "" + local mindepth = 1e9 + string.gsub(paths, "(@<:@^;@:>@+)", + function (path) + path = string.gsub(path, "%?.*$", "") + path = string.gsub(path, "/@<:@^/@:>@*$", "") + if string.find(path, prefix) then + local depth = string.len(string.gsub(path, "@<:@^/@:>@", "")) + if depth < mindepth then + minpath = path + mindepth = depth + end + end + end) + print(minpath)'`] +]) + + +dnl ========================================================================= +dnl AX_LUA_HEADERS([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +dnl ========================================================================= +AC_DEFUN([AX_LUA_HEADERS], +[ + dnl Check for LUA_VERSION. + AC_MSG_CHECKING([if LUA_VERSION is defined]) + AS_IF([test "x$LUA_VERSION" != 'x'], + [AC_MSG_RESULT([yes])], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([cannot check Lua headers without knowing LUA_VERSION]) + ]) + + dnl Make LUA_INCLUDE a precious variable. + AC_ARG_VAR([LUA_INCLUDE], [The Lua includes, e.g. -I/usr/include/lua5.1]) + + dnl Some default directories to search. + LUA_SHORT_VERSION=`echo "$LUA_VERSION" | $SED 's|\.||'` + m4_define_default([_AX_LUA_INCLUDE_LIST], + [ /usr/include/lua$LUA_VERSION \ + /usr/include/lua-$LUA_VERSION \ + /usr/include/lua/$LUA_VERSION \ + /usr/include/lua$LUA_SHORT_VERSION \ + /usr/local/include/lua$LUA_VERSION \ + /usr/local/include/lua-$LUA_VERSION \ + /usr/local/include/lua/$LUA_VERSION \ + /usr/local/include/lua$LUA_SHORT_VERSION \ + ]) + + dnl Try to find the headers. + _ax_lua_saved_cppflags=$CPPFLAGS + CPPFLAGS="$CPPFLAGS $LUA_INCLUDE" + AC_CHECK_HEADERS([lua.h lualib.h lauxlib.h luaconf.h]) + CPPFLAGS=$_ax_lua_saved_cppflags + + dnl Try some other directories if LUA_INCLUDE was not set. + AS_IF([test "x$LUA_INCLUDE" = 'x' && + test "x$ac_cv_header_lua_h" != 'xyes'], + [ dnl Try some common include paths. + for _ax_include_path in _AX_LUA_INCLUDE_LIST; do + test ! -d "$_ax_include_path" && continue + + AC_MSG_CHECKING([for Lua headers in]) + AC_MSG_RESULT([$_ax_include_path]) + + AS_UNSET([ac_cv_header_lua_h]) + AS_UNSET([ac_cv_header_lualib_h]) + AS_UNSET([ac_cv_header_lauxlib_h]) + AS_UNSET([ac_cv_header_luaconf_h]) + + _ax_lua_saved_cppflags=$CPPFLAGS + CPPFLAGS="$CPPFLAGS -I$_ax_include_path" + AC_CHECK_HEADERS([lua.h lualib.h lauxlib.h luaconf.h]) + CPPFLAGS=$_ax_lua_saved_cppflags + + AS_IF([test "x$ac_cv_header_lua_h" = 'xyes'], + [ LUA_INCLUDE="-I$_ax_include_path" + break + ]) + done + ]) + + AS_IF([test "x$ac_cv_header_lua_h" = 'xyes'], + [ AC_CACHE_CHECK([for Lua header version], + [ax_cv_lua_header_version], + [ + ax_cv_lua_header_version=`echo LUA_VERSION | \ + $CC -P -E $LUA_INCLUDE -imacros lua.h - | \ + $SED -e 's%"@<:@@<:@:space:@:>@@:>@*"%%g' -e 's%^@<:@@<:@:space:@:>@@:>@*%%' | \ + tr -d '"\n' | \ + $SED -n "s|^Lua \(@<:@0-9@:>@\{1,\}\.@<:@0-9@:>@\{1,\}\).\{0,\}|\1|p"` + ]) + + dnl Compare this to the previously found LUA_VERSION. + AC_MSG_CHECKING([if Lua header version matches $LUA_VERSION]) + AS_IF([test "x$ax_cv_lua_header_version" = "x$LUA_VERSION"], + [ AC_MSG_RESULT([yes]) + ax_header_version_match='yes' + ], + [ AC_MSG_RESULT([no]) + ax_header_version_match='no' + ]) + ]) + + dnl Was LUA_INCLUDE specified? + AS_IF([test "x$ax_header_version_match" != 'xyes' && + test "x$LUA_INCLUDE" != 'x'], + [AC_MSG_ERROR([cannot find headers for specified LUA_INCLUDE])]) + + dnl Test the final result and run user code. + AS_IF([test "x$ax_header_version_match" = 'xyes'], [$1], + [m4_default([$2], [AC_MSG_ERROR([cannot find Lua includes])])]) +]) + +dnl AX_LUA_HEADERS_VERSION no longer exists, use AX_LUA_HEADERS. +AC_DEFUN([AX_LUA_HEADERS_VERSION], +[ + AC_MSG_WARN([[$0 is deprecated, please use AX_LUA_HEADERS instead]]) +]) + + +dnl ========================================================================= +dnl AX_LUA_LIBS([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +dnl ========================================================================= +AC_DEFUN([AX_LUA_LIBS], +[ + dnl TODO Should this macro also check various -L flags? + + dnl Check for LUA_VERSION. + AC_MSG_CHECKING([if LUA_VERSION is defined]) + AS_IF([test "x$LUA_VERSION" != 'x'], + [AC_MSG_RESULT([yes])], + [ AC_MSG_RESULT([no]) + AC_MSG_ERROR([cannot check Lua libs without knowing LUA_VERSION]) + ]) + + dnl Make LUA_LIB a precious variable. + AC_ARG_VAR([LUA_LIB], [The Lua library, e.g. -llua5.1]) + + AS_IF([test "x$LUA_LIB" != 'x'], + [ dnl Check that LUA_LIBS works. + _ax_lua_saved_libs=$LIBS + LIBS="$LIBS $LUA_LIB" + AC_SEARCH_LIBS([lua_load], [], + [_ax_found_lua_libs='yes'], + [_ax_found_lua_libs='no']) + LIBS=$_ax_lua_saved_libs + + dnl Check the result. + AS_IF([test "x$_ax_found_lua_libs" != 'xyes'], + [AC_MSG_ERROR([cannot find libs for specified LUA_LIB])]) + ], + [ dnl First search for extra libs. + _ax_lua_extra_libs='' + + _ax_lua_saved_libs=$LIBS + LIBS="$LIBS $LUA_LIB" + AC_SEARCH_LIBS([exp], [m]) + AC_SEARCH_LIBS([dlopen], [dl]) + LIBS=$_ax_lua_saved_libs + + AS_IF([test "x$ac_cv_search_exp" != 'xno' && + test "x$ac_cv_search_exp" != 'xnone required'], + [_ax_lua_extra_libs="$_ax_lua_extra_libs $ac_cv_search_exp"]) + + AS_IF([test "x$ac_cv_search_dlopen" != 'xno' && + test "x$ac_cv_search_dlopen" != 'xnone required'], + [_ax_lua_extra_libs="$_ax_lua_extra_libs $ac_cv_search_dlopen"]) + + dnl Try to find the Lua libs. + _ax_lua_saved_libs=$LIBS + LIBS="$LIBS $LUA_LIB" + AC_SEARCH_LIBS([lua_load], + [ lua$LUA_VERSION \ + lua$LUA_SHORT_VERSION \ + lua-$LUA_VERSION \ + lua-$LUA_SHORT_VERSION \ + lua \ + ], + [_ax_found_lua_libs='yes'], + [_ax_found_lua_libs='no'], + [$_ax_lua_extra_libs]) + LIBS=$_ax_lua_saved_libs + + AS_IF([test "x$ac_cv_search_lua_load" != 'xno' && + test "x$ac_cv_search_lua_load" != 'xnone required'], + [LUA_LIB="$ac_cv_search_lua_load $_ax_lua_extra_libs"]) + ]) + + dnl Test the result and run user code. + AS_IF([test "x$_ax_found_lua_libs" = 'xyes'], [$1], + [m4_default([$2], [AC_MSG_ERROR([cannot find Lua libs])])]) +]) + + +dnl ========================================================================= +dnl AX_LUA_READLINE([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +dnl ========================================================================= +AC_DEFUN([AX_LUA_READLINE], +[ + AX_LIB_READLINE + AS_IF([test "x$ac_cv_header_readline_readline_h" != 'x' && + test "x$ac_cv_header_readline_history_h" != 'x'], + [ LUA_LIBS_CFLAGS="-DLUA_USE_READLINE $LUA_LIBS_CFLAGS" + $1 + ], + [$2]) +]) diff --git a/m4/ax_prog_perl_modules.m4 b/m4/ax_prog_perl_modules.m4 new file mode 100644 index 0000000..11a326c --- /dev/null +++ b/m4/ax_prog_perl_modules.m4 @@ -0,0 +1,77 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_prog_perl_modules.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PROG_PERL_MODULES([MODULES], [ACTION-IF-TRUE], [ACTION-IF-FALSE]) +# +# DESCRIPTION +# +# Checks to see if the given perl modules are available. If true the shell +# commands in ACTION-IF-TRUE are executed. If not the shell commands in +# ACTION-IF-FALSE are run. Note if $PERL is not set (for example by +# calling AC_CHECK_PROG, or AC_PATH_PROG), AC_CHECK_PROG(PERL, perl, perl) +# will be run. +# +# MODULES is a space separated list of module names. To check for a +# minimum version of a module, append the version number to the module +# name, separated by an equals sign. +# +# Example: +# +# AX_PROG_PERL_MODULES( Text::Wrap Net::LDAP=1.0.3, , +# AC_MSG_WARN(Need some Perl modules) +# +# LICENSE +# +# Copyright (c) 2009 Dean Povey <povey@wedgetail.com> +# +# 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 7 + +AU_ALIAS([AC_PROG_PERL_MODULES], [AX_PROG_PERL_MODULES]) +AC_DEFUN([AX_PROG_PERL_MODULES],[dnl + +m4_define([ax_perl_modules]) +m4_foreach([ax_perl_module], m4_split(m4_normalize([$1])), + [ + m4_append([ax_perl_modules], + [']m4_bpatsubst(ax_perl_module,=,[ ])[' ]) + ]) + +# Make sure we have perl +if test -z "$PERL"; then +AC_CHECK_PROG(PERL,perl,perl) +fi + +if test "x$PERL" != x; then + ax_perl_modules_failed=0 + for ax_perl_module in ax_perl_modules; do + AC_MSG_CHECKING(for perl module $ax_perl_module) + + # Would be nice to log result here, but can't rely on autoconf internals + $PERL -e "use $ax_perl_module; exit" > /dev/null 2>&1 + if test $? -ne 0; then + AC_MSG_RESULT(no); + ax_perl_modules_failed=1 + else + AC_MSG_RESULT(ok); + fi + done + + # Run optional shell commands + if test "$ax_perl_modules_failed" = 0; then + : + $2 + else + : + $3 + fi +else + AC_MSG_WARN(could not find perl) +fi])dnl diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4 new file mode 100644 index 0000000..b7872d9 --- /dev/null +++ b/m4/ax_pthread.m4 @@ -0,0 +1,332 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_pthread.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) +# +# DESCRIPTION +# +# This macro figures out how to build C programs using POSIX threads. It +# sets the PTHREAD_LIBS output variable to the threads library and linker +# flags, and the PTHREAD_CFLAGS output variable to any special C compiler +# flags that are needed. (The user can also force certain compiler +# flags/libs to be tested by setting these environment variables.) +# +# Also sets PTHREAD_CC to any special C compiler that is needed for +# multi-threaded programs (defaults to the value of CC otherwise). (This +# is necessary on AIX to use the special cc_r compiler alias.) +# +# NOTE: You are assumed to not only compile your program with these flags, +# but also link it with them as well. e.g. you should link with +# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS +# +# If you are only building threads programs, you may wish to use these +# variables in your default LIBS, CFLAGS, and CC: +# +# LIBS="$PTHREAD_LIBS $LIBS" +# CFLAGS="$CFLAGS $PTHREAD_CFLAGS" +# CC="$PTHREAD_CC" +# +# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant +# has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name +# (e.g. PTHREAD_CREATE_UNDETACHED on AIX). +# +# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the +# PTHREAD_PRIO_INHERIT symbol is defined when compiling with +# PTHREAD_CFLAGS. +# +# ACTION-IF-FOUND is a list of shell commands to run if a threads library +# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it +# is not found. If ACTION-IF-FOUND is not specified, the default action +# will define HAVE_PTHREAD. +# +# Please let the authors know if this macro fails on any platform, or if +# you have any other suggestions or comments. This macro was based on work +# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help +# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by +# Alejandro Forero Cuervo to the autoconf macro repository. We are also +# grateful for the helpful feedback of numerous users. +# +# Updated for Autoconf 2.68 by Daniel Richard G. +# +# LICENSE +# +# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu> +# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG> +# +# 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 <http://www.gnu.org/licenses/>. +# +# 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 21 + +AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD]) +AC_DEFUN([AX_PTHREAD], [ +AC_REQUIRE([AC_CANONICAL_HOST]) +AC_LANG_PUSH([C]) +ax_pthread_ok=no + +# We used to check for pthread.h first, but this fails if pthread.h +# requires special compiler flags (e.g. on True64 or Sequent). +# It gets checked for in the link test anyway. + +# First of all, check if the user has set any of the PTHREAD_LIBS, +# etcetera environment variables, and if threads linking works using +# them: +if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) + AC_TRY_LINK_FUNC([pthread_join], [ax_pthread_ok=yes]) + AC_MSG_RESULT([$ax_pthread_ok]) + if test x"$ax_pthread_ok" = xno; then + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" + fi + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" +fi + +# We must check for the threads library under a number of different +# names; the ordering is very important because some systems +# (e.g. DEC) have both -lpthread and -lpthreads, where one of the +# libraries is broken (non-POSIX). + +# Create a list of thread flags to try. Items starting with a "-" are +# C compiler flags, and other items are library names, except for "none" +# which indicates that we try without any flags at all, and "pthread-config" +# which is a program returning the flags for the Pth emulation library. + +ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config" + +# The ordering *is* (sometimes) important. Some notes on the +# individual items follow: + +# pthreads: AIX (must check this before -lpthread) +# none: in case threads are in libc; should be tried before -Kthread and +# other compiler flags to prevent continual compiler warnings +# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) +# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) +# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) +# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) +# -pthreads: Solaris/gcc +# -mthreads: Mingw32/gcc, Lynx/gcc +# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it +# doesn't hurt to check since this sometimes defines pthreads too; +# also defines -D_REENTRANT) +# ... -mt is also the pthreads flag for HP/aCC +# pthread: Linux, etcetera +# --thread-safe: KAI C++ +# pthread-config: use pthread-config program (for GNU Pth library) + +case ${host_os} in + solaris*) + + # On Solaris (at least, for some versions), libc contains stubbed + # (non-functional) versions of the pthreads routines, so link-based + # tests will erroneously succeed. (We need to link with -pthreads/-mt/ + # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather + # a function called by this macro, so we could check for that, but + # who knows whether they'll stub that too in a future libc.) So, + # we'll just look for -pthreads and -lpthread first: + + ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags" + ;; + + darwin*) + ax_pthread_flags="-pthread $ax_pthread_flags" + ;; +esac + +# Clang doesn't consider unrecognized options an error unless we specify +# -Werror. We throw in some extra Clang-specific options to ensure that +# this doesn't happen for GCC, which also accepts -Werror. + +AC_MSG_CHECKING([if compiler needs -Werror to reject unknown flags]) +save_CFLAGS="$CFLAGS" +ax_pthread_extra_flags="-Werror" +CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wunknown-warning-option -Wsizeof-array-argument" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])], + [AC_MSG_RESULT([yes])], + [ax_pthread_extra_flags= + AC_MSG_RESULT([no])]) +CFLAGS="$save_CFLAGS" + +if test x"$ax_pthread_ok" = xno; then +for flag in $ax_pthread_flags; do + + case $flag in + none) + AC_MSG_CHECKING([whether pthreads work without any flags]) + ;; + + -*) + AC_MSG_CHECKING([whether pthreads work with $flag]) + PTHREAD_CFLAGS="$flag" + ;; + + pthread-config) + AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no]) + if test x"$ax_pthread_config" = xno; then continue; fi + PTHREAD_CFLAGS="`pthread-config --cflags`" + PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`" + ;; + + *) + AC_MSG_CHECKING([for the pthreads library -l$flag]) + PTHREAD_LIBS="-l$flag" + ;; + esac + + save_LIBS="$LIBS" + save_CFLAGS="$CFLAGS" + LIBS="$PTHREAD_LIBS $LIBS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS $ax_pthread_extra_flags" + + # Check for various functions. We must include pthread.h, + # since some functions may be macros. (On the Sequent, we + # need a special flag -Kthread to make this header compile.) + # We check for pthread_join because it is in -lpthread on IRIX + # while pthread_create is in libc. We check for pthread_attr_init + # due to DEC craziness with -lpthreads. We check for + # pthread_cleanup_push because it is one of the few pthread + # functions on Solaris that doesn't have a non-functional libc stub. + # We try pthread_create on general principles. + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h> + static void routine(void *a) { if (a) a = 0; } + static void *start_routine(void *a) { return a; }], + [pthread_t th; pthread_attr_t attr; + pthread_create(&th, 0, start_routine, 0); + pthread_join(th, 0); + pthread_attr_init(&attr); + pthread_cleanup_push(routine, 0); + pthread_cleanup_pop(0) /* ; */])], + [ax_pthread_ok=yes], + []) + + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" + + AC_MSG_RESULT([$ax_pthread_ok]) + if test "x$ax_pthread_ok" = xyes; then + break; + fi + + PTHREAD_LIBS="" + PTHREAD_CFLAGS="" +done +fi + +# Various other checks: +if test "x$ax_pthread_ok" = xyes; then + save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + + # Detect AIX lossage: JOINABLE attribute is called UNDETACHED. + AC_MSG_CHECKING([for joinable pthread attribute]) + attr_name=unknown + for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do + AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>], + [int attr = $attr; return attr /* ; */])], + [attr_name=$attr; break], + []) + done + AC_MSG_RESULT([$attr_name]) + if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then + AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], [$attr_name], + [Define to necessary symbol if this constant + uses a non-standard name on your system.]) + fi + + AC_MSG_CHECKING([if more special flags are required for pthreads]) + flag=no + case ${host_os} in + aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";; + osf* | hpux*) flag="-D_REENTRANT";; + solaris*) + if test "$GCC" = "yes"; then + flag="-D_REENTRANT" + else + # TODO: What about Clang on Solaris? + flag="-mt -D_REENTRANT" + fi + ;; + esac + AC_MSG_RESULT([$flag]) + if test "x$flag" != xno; then + PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" + fi + + AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], + [ax_cv_PTHREAD_PRIO_INHERIT], [ + AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], + [[int i = PTHREAD_PRIO_INHERIT;]])], + [ax_cv_PTHREAD_PRIO_INHERIT=yes], + [ax_cv_PTHREAD_PRIO_INHERIT=no]) + ]) + AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"], + [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])]) + + LIBS="$save_LIBS" + CFLAGS="$save_CFLAGS" + + # More AIX lossage: compile with *_r variant + if test "x$GCC" != xyes; then + case $host_os in + aix*) + AS_CASE(["x/$CC"], + [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6], + [#handle absolute path differently from PATH based program lookup + AS_CASE(["x$CC"], + [x/*], + [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])], + [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])]) + ;; + esac + fi +fi + +test -n "$PTHREAD_CC" || PTHREAD_CC="$CC" + +AC_SUBST([PTHREAD_LIBS]) +AC_SUBST([PTHREAD_CFLAGS]) +AC_SUBST([PTHREAD_CC]) + +# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: +if test x"$ax_pthread_ok" = xyes; then + ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1]) + : +else + ax_pthread_ok=no + $2 +fi +AC_LANG_POP +])dnl AX_PTHREAD diff --git a/m4/ax_python.m4 b/m4/ax_python.m4 new file mode 100644 index 0000000..f5e603b --- /dev/null +++ b/m4/ax_python.m4 @@ -0,0 +1,289 @@ +dnl FRR Python autoconf magic +dnl 2019 David Lamparter for NetDEF, Inc. +dnl SPDX-License-Identifier: GPL-2.0-or-later + +dnl the _ at the beginning will be cut off (to support the empty version string) +m4_define_default([_FRR_PY_VERS], [_3 _3.10 _3.9 _3.8 _3.7 _3.6 _3.5 _3.4 _3.3 _3.2 _ _2 _2.7]) + +dnl check basic interpreter properties (py2/py3) +dnl doubles as simple check whether the interpreter actually works +dnl also swaps in the full path to the interpreter +dnl arg1: if-true, arg2: if-false +AC_DEFUN([_FRR_PYTHON_INTERP], [dnl +AC_ARG_VAR([PYTHON], [Python interpreter to use])dnl + AC_MSG_CHECKING([python interpreter $PYTHON]) + AC_RUN_LOG(["$PYTHON" -c 'import sys; open("conftest.pyver", "w").write(sys.executable or ""); sys.exit(not (sys.version_info.major == 2 and sys.version_info.minor >= 7))']) + py2=$ac_status + _py2_full="`cat conftest.pyver 2>/dev/null`" + rm -f "conftest.pyver" >/dev/null 2>/dev/null + + AC_RUN_LOG(["$PYTHON" -c 'import sys; open("conftest.pyver", "w").write(sys.executable or ""); sys.exit(not ((sys.version_info.major == 3 and sys.version_info.minor >= 2) or sys.version_info.major > 3))']) + py3=$ac_status + _py3_full="`cat conftest.pyver 2>/dev/null`" + rm -f "conftest.pyver" >/dev/null 2>/dev/null + + case "p${py2}p${py3}" in + p0p1) frr_cv_python=python2 + _python_full="$_py2_full" ;; + p1p0) frr_cv_python=python3 + _python_full="$_py3_full" ;; + *) frr_cv_python=none ;; + esac + + if test "$frr_cv_python" = none; then + AC_MSG_RESULT([not working]) + $2 + else + test -n "$_python_full" -a -x "$_python_full" && PYTHON="$_python_full" + AC_MSG_RESULT([$PYTHON ($frr_cv_python)]) + $1 + fi + + dnl return value + test "$frr_cv_python" != none +]) + +dnl check whether $PYTHON has modules available +dnl arg1: list of modules (space separated) +dnl arg2: if all true, arg3: if any missing +dnl also sets frr_py_mod_<name> to "true" or "false" +AC_DEFUN([FRR_PYTHON_MODULES], [ + result=true + for pymod in $1; do + AC_MSG_CHECKING([whether $PYTHON module $pymod is available]) + AC_RUN_LOG(["$PYTHON" -c "import $pymod"]) + sane="`echo \"$pymod\" | tr -c '[a-zA-Z0-9\n]' '_'`" + if test "$ac_status" -eq 0; then + AC_MSG_RESULT([yes]) + eval frr_py_mod_$sane=true + else + AC_MSG_RESULT([no]) + eval frr_py_mod_$sane=false + result=false + fi + done + if $result; then + m4_default([$2], [:]) + else + m4_default([$3], [:]) + fi + $result +]) + +dnl check whether $PYTHON has modules available +dnl arg1: list of modules (space separated) +dnl arg2: command line parameters for executing +dnl arg3: if all true, arg4: if any missing +dnl also sets frr_py_modexec_<name> to "true" or "false" +AC_DEFUN([FRR_PYTHON_MOD_EXEC], [ + result=true + for pymod in $1; do + AC_MSG_CHECKING([whether $PYTHON module $pymod is executable]) + AC_RUN_LOG(["$PYTHON" -m "$pymod" $2 > /dev/null]) + sane="`echo \"$pymod\" | tr -c '[a-zA-Z0-9\n]' '_'`" + if test "$ac_status" -eq 0; then + AC_MSG_RESULT([yes]) + eval frr_py_modexec_$sane=true + else + AC_MSG_RESULT([no]) + eval frr_py_modexec_$sane=false + result=false + fi + done + if $result; then + m4_default([$3], [:]) + else + m4_default([$4], [:]) + fi + $result +]) + +dnl check whether we can build & link python bits +dnl input: PYTHON_CFLAGS and PYTHON_LIBS +AC_DEFUN([_FRR_PYTHON_DEVENV], [ + result=true + AC_LINK_IFELSE_FLAGS([$PYTHON_CFLAGS], [$PYTHON_LIBS], [AC_LANG_PROGRAM([ +#include <Python.h> +#if PY_VERSION_HEX < 0x02070000 +#error python too old +#endif +int main(void); +], +[ +{ + Py_Initialize(); + return 0; +} +])], [ + # some python installs are missing the zlib dependency... + PYTHON_LIBS="${PYTHON_LIBS} -lz" + AC_LINK_IFELSE_FLAGS([$PYTHON_CFLAGS], [$PYTHON_LIBS], [AC_LANG_PROGRAM([ +#include <Python.h> +#if PY_VERSION_HEX < 0x02070000 +#error python too old +#endif +int main(void); +], +[ +{ + Py_Initialize(); + return 0; +} +])], [ + result=false + AC_MSG_RESULT([no]) + ], [:]) + ], [:]) + + if $result; then + AC_LINK_IFELSE_FLAGS([$PYTHON_CFLAGS], [$PYTHON_LIBS], [AC_LANG_PROGRAM([ +#include <Python.h> +#if PY_VERSION_HEX != $1 +#error python version mismatch +#endif +int main(void); +], +[ +{ + Py_Initialize(); + return 0; +} +])], [ + result=false + AC_MSG_RESULT([version mismatch]) + ], [ + AC_MSG_RESULT([yes]) + ]) + fi + + if $result; then + m4_default([$2], [:]) + else + m4_default([$3], [ + unset PYTHON_LIBS + unset PYTHON_CFLAGS + ]) + fi +]) + +AC_DEFUN([_FRR_PYTHON_GETDEV], [dnl +AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl + + py_abi="` \"$1\" -c \"import sys; print(getattr(sys, 'abiflags', ''))\"`" + py_hex="` \"$1\" -c \"import sys; print(hex(sys.hexversion))\"`" + py_ldver="` \"$1\" -c \"import sysconfig; print(sysconfig.get_config_var('LDVERSION') or '')\"`" + py_ver="` \"$1\" -c \"import sysconfig; print(sysconfig.get_config_var('VERSION') or '')\"`" + py_bindir="`\"$1\" -c \"import sysconfig; print(sysconfig.get_config_var('BINDIR') or '')\"`" + test -z "$py_bindir" || py_bindir="$py_bindir/" + echo "py_abi=${py_abi} py_ldver=${py_ldver} py_ver=${py_ver} py_bindir=${py_bindir}" >&AS_MESSAGE_LOG_FD + + py_found=false + + for tryver in "${py_ldver}" "${py_ver}"; do + pycfg="${py_bindir}python${tryver}-config" + AC_MSG_CHECKING([whether ${pycfg} is available]) + if "$pycfg" --configdir >/dev/null 2>/dev/null; then + AC_MSG_RESULT([yes]) + + PYTHON_CFLAGS="`\"$pycfg\" --includes`" + minor_ver=${py_ver#*\.} + if test $((minor_ver)) -gt 7; then + PYTHON_LIBS="`\"$pycfg\" --ldflags --embed`" + else + PYTHON_LIBS="`\"$pycfg\" --ldflags`" + fi + + AC_MSG_CHECKING([whether ${pycfg} provides a working build environment]) + _FRR_PYTHON_DEVENV([$py_hex], [ + py_found=true + break + ]) + else + AC_MSG_RESULT([no]) + fi + + pkg_failed=no + AC_MSG_CHECKING([whether pkg-config python-${tryver} is available]) + unset PYTHON_CFLAGS + unset PYTHON_LIBS + pkg="python-${tryver}-embed" + pkg="${pkg%-}" + _PKG_CONFIG([PYTHON_CFLAGS], [cflags], [${pkg}]) + _PKG_CONFIG([PYTHON_LIBS], [libs], [${pkg}]) + if test $pkg_failed = no; then + AC_MSG_RESULT([yes]) + + PYTHON_CFLAGS=$pkg_cv_PYTHON_CFLAGS + PYTHON_LIBS=$pkg_cv_PYTHON_LIBS + + AC_MSG_CHECKING([whether pkg-config python-${tryver} provides a working build environment]) + _FRR_PYTHON_DEVENV([$py_hex], [ + py_found=true + break + ]) + else + AC_MSG_RESULT([no]) + fi + done + + if $py_found; then + m4_default([$2], [:]) + else + unset PYTHON_CFLAGS + unset PYTHON_LIBS + m4_default([$3], [:]) + fi +]) + +dnl just find python without checking headers/libs +AC_DEFUN([FRR_PYTHON], [ + dnl user override + if test "x$PYTHON" != "x"; then + _FRR_PYTHON_INTERP([], [ + AC_MSG_ERROR([PYTHON ($PYTHON) explicitly specified but not working]) + ]) + else + for frr_pyver in _FRR_PY_VERS; do + PYTHON="python${frr_pyver#_}" + _FRR_PYTHON_INTERP([break]) + PYTHON=":" + done + if test "$PYTHON" = ":"; then + AC_MSG_ERROR([no working python version found]) + fi + fi + AC_SUBST([PYTHON]) +]) + +dnl find python with checking headers/libs +AC_DEFUN([FRR_PYTHON_DEV], [dnl +AC_ARG_VAR([PYTHON_CFLAGS], [C compiler flags for Python])dnl +AC_ARG_VAR([PYTHON_LIBS], [linker flags for Python])dnl + + dnl user override + if test "x$PYTHON" != "x"; then + _FRR_PYTHON_INTERP([], [ + AC_MSG_ERROR([PYTHON ($PYTHON) explicitly specified but not working]) + ]) + _FRR_PYTHON_GETDEV([$PYTHON], [], [ + AC_MSG_ERROR([PYTHON ($PYTHON) explicitly specified but development environment not working]) + ]) + else + for frr_pyver in _FRR_PY_VERS; do + PYTHON="python${frr_pyver#_}" + _FRR_PYTHON_INTERP([ + _FRR_PYTHON_GETDEV([$PYTHON], [ + break + ]) + ]) + PYTHON=":" + done + if test "$PYTHON" = ":"; then + AC_MSG_ERROR([no working python version found]) + fi + fi + + AC_SUBST([PYTHON_CFLAGS]) + AC_SUBST([PYTHON_LIBS]) + AC_SUBST([PYTHON]) +]) diff --git a/m4/ax_sys_weak_alias.m4 b/m4/ax_sys_weak_alias.m4 new file mode 100644 index 0000000..37cbe91 --- /dev/null +++ b/m4/ax_sys_weak_alias.m4 @@ -0,0 +1,333 @@ +# =========================================================================== +# http://www.gnu.org/software/autoconf-archive/ax_sys_weak_alias.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_SYS_WEAK_ALIAS +# +# DESCRIPTION +# +# Determines whether weak aliases are supported on the system, and if so, +# what scheme is used to declare them. Also checks to see if aliases can +# cross object file boundaries, as some systems don't permit them to. +# +# Most systems permit something called a "weak alias" or "weak symbol." +# These aliases permit a library to provide a stub form of a routine +# defined in another library, thus allowing the first library to operate +# even if the other library is not linked. This macro will check for +# support of weak aliases, figure out what schemes are available, and +# determine some characteristics of the weak alias support -- primarily, +# whether a weak alias declared in one object file may be referenced from +# another object file. +# +# There are four known schemes of declaring weak symbols; each scheme is +# checked in turn, and the first one found is preferred. Note that only one +# of the mentioned preprocessor macros will be defined! +# +# 1. Function attributes +# +# This scheme was first introduced by the GNU C compiler, and attaches +# attributes to particular functions. It is among the easiest to use, and +# so is the first one checked. If this scheme is detected, the +# preprocessor macro HAVE_SYS_WEAK_ALIAS_ATTRIBUTE will be defined to 1. +# This scheme is used as in the following code fragment: +# +# void __weakf(int c) +# { +# /* Function definition... */ +# } +# +# void weakf(int c) __attribute__((weak, alias("__weakf"))); +# +# 2. #pragma weak +# +# This scheme is in use by many compilers other than the GNU C compiler. +# It is also particularly easy to use, and fairly portable -- well, as +# portable as these things get. If this scheme is detected first, the +# preprocessor macro HAVE_SYS_WEAK_ALIAS_PRAGMA will be defined to 1. This +# scheme is used as in the following code fragment: +# +# extern void weakf(int c); +# #pragma weak weakf = __weakf +# void __weakf(int c) +# { +# /* Function definition... */ +# } +# +# 3. #pragma _HP_SECONDARY_DEF +# +# This scheme appears to be in use by the HP compiler. As it is rather +# specialized, this is one of the last schemes checked. If it is the first +# one detected, the preprocessor macro HAVE_SYS_WEAK_ALIAS_HPSECONDARY +# will be defined to 1. This scheme is used as in the following code +# fragment: +# +# extern void weakf(int c); +# #pragma _HP_SECONDARY_DEF __weakf weakf +# void __weakf(int c) +# { +# /* Function definition... */ +# } +# +# 4. #pragma _CRI duplicate +# +# This scheme appears to be in use by the Cray compiler. As it is rather +# specialized, it too is one of the last schemes checked. If it is the +# first one detected, the preprocessor macro +# HAVE_SYS_WEAK_ALIAS_CRIDUPLICATE will be defined to 1. This scheme is +# used as in the following code fragment: +# +# extern void weakf(int c); +# #pragma _CRI duplicate weakf as __weakf +# void __weakf(int c) +# { +# /* Function definition... */ +# } +# +# In addition to the preprocessor macros listed above, if any scheme is +# found, the preprocessor macro HAVE_SYS_WEAK_ALIAS will also be defined +# to 1. +# +# Once a weak aliasing scheme has been found, a check will be performed to +# see if weak aliases are honored across object file boundaries. If they +# are, the HAVE_SYS_WEAK_ALIAS_CROSSFILE preprocessor macro is defined to +# 1. +# +# This Autoconf macro also makes two substitutions. The first, WEAK_ALIAS, +# contains the name of the scheme found (one of "attribute", "pragma", +# "hpsecondary", or "criduplicate"), or "no" if no weak aliasing scheme +# was found. The second, WEAK_ALIAS_CROSSFILE, is set to "yes" or "no" +# depending on whether or not weak aliases may cross object file +# boundaries. +# +# LICENSE +# +# Copyright (c) 2008 Kevin L. Mitchell <klmitch@mit.edu> +# +# 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 6 + +AU_ALIAS([KLM_SYS_WEAK_ALIAS], [AX_SYS_WEAK_ALIAS]) +AC_DEFUN([AX_SYS_WEAK_ALIAS], [ + # starting point: no aliasing scheme yet... + ax_sys_weak_alias=no + + # Figure out what kind of aliasing may be supported... + _AX_SYS_WEAK_ALIAS_ATTRIBUTE + _AX_SYS_WEAK_ALIAS_PRAGMA + _AX_SYS_WEAK_ALIAS_HPSECONDARY + _AX_SYS_WEAK_ALIAS_CRIDUPLICATE + + # Do we actually support aliasing? + AC_CACHE_CHECK([how to create weak aliases with $CC], + [ax_cv_sys_weak_alias], + [ax_cv_sys_weak_alias=$ax_sys_weak_alias]) + + # OK, set a #define + AS_IF([test $ax_cv_sys_weak_alias != no], [ + AC_DEFINE([HAVE_SYS_WEAK_ALIAS], 1, + [Define this if your system can create weak aliases]) + ]) + + # Can aliases cross object file boundaries? + _AX_SYS_WEAK_ALIAS_CROSSFILE + + # OK, remember the results + AC_SUBST([WEAK_ALIAS], [$ax_cv_sys_weak_alias]) + AC_SUBST([WEAK_ALIAS_CROSSFILE], [$ax_cv_sys_weak_alias_crossfile]) +]) + +AC_DEFUN([_AX_SYS_WEAK_ALIAS_ATTRIBUTE], +[ # Test whether compiler accepts __attribute__ form of weak aliasing + AC_CACHE_CHECK([whether $CC accepts function __attribute__((weak,alias()))], + [ax_cv_sys_weak_alias_attribute], [ + # We add -Werror if it's gcc to force an error exit if the weak attribute + # isn't understood + AS_IF([test $GCC = yes], [ + save_CFLAGS=$CFLAGS + CFLAGS=-Werror]) + + # Try linking with a weak alias... + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([ +void __weakf(int c) {} +void weakf(int c) __attribute__((weak, alias("__weakf")));], + [weakf(0)])], + [ax_cv_sys_weak_alias_attribute=yes], + [ax_cv_sys_weak_alias_attribute=no]) + + # Restore original CFLAGS + AS_IF([test $GCC = yes], [ + CFLAGS=$save_CFLAGS]) + ]) + + # What was the result of the test? + AS_IF([test $ax_cv_sys_weak_alias_attribute = yes], [ + test $ax_sys_weak_alias = no && ax_sys_weak_alias=attribute + AC_DEFINE([HAVE_SYS_WEAK_ALIAS_ATTRIBUTE], 1, + [Define this if weak aliases may be created with __attribute__]) + ]) +]) + +AC_DEFUN([_AX_SYS_WEAK_ALIAS_PRAGMA], +[ # Test whether compiler accepts #pragma form of weak aliasing + AC_CACHE_CHECK([whether $CC supports @%:@pragma weak], + [ax_cv_sys_weak_alias_pragma], [ + + # Try linking with a weak alias... + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([ +extern void weakf(int c); +@%:@pragma weak weakf = __weakf +void __weakf(int c) {}], + [weakf(0)])], + [ax_cv_sys_weak_alias_pragma=yes], + [ax_cv_sys_weak_alias_pragma=no]) + ]) + + # What was the result of the test? + AS_IF([test $ax_cv_sys_weak_alias_pragma = yes], [ + test $ax_sys_weak_alias = no && ax_sys_weak_alias=pragma + AC_DEFINE([HAVE_SYS_WEAK_ALIAS_PRAGMA], 1, + [Define this if weak aliases may be created with @%:@pragma weak]) + ]) +]) + +AC_DEFUN([_AX_SYS_WEAK_ALIAS_HPSECONDARY], +[ # Test whether compiler accepts _HP_SECONDARY_DEF pragma from HP... + AC_CACHE_CHECK([whether $CC supports @%:@pragma _HP_SECONDARY_DEF], + [ax_cv_sys_weak_alias_hpsecondary], [ + + # Try linking with a weak alias... + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([ +extern void weakf(int c); +@%:@pragma _HP_SECONDARY_DEF __weakf weakf +void __weakf(int c) {}], + [weakf(0)])], + [ax_cv_sys_weak_alias_hpsecondary=yes], + [ax_cv_sys_weak_alias_hpsecondary=no]) + ]) + + # What was the result of the test? + AS_IF([test $ax_cv_sys_weak_alias_hpsecondary = yes], [ + test $ax_sys_weak_alias = no && ax_sys_weak_alias=hpsecondary + AC_DEFINE([HAVE_SYS_WEAK_ALIAS_HPSECONDARY], 1, + [Define this if weak aliases may be created with @%:@pragma _HP_SECONDARY_DEF]) + ]) +]) + +AC_DEFUN([_AX_SYS_WEAK_ALIAS_CRIDUPLICATE], +[ # Test whether compiler accepts "_CRI duplicate" pragma from Cray + AC_CACHE_CHECK([whether $CC supports @%:@pragma _CRI duplicate], + [ax_cv_sys_weak_alias_criduplicate], [ + + # Try linking with a weak alias... + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([ +extern void weakf(int c); +@%:@pragma _CRI duplicate weakf as __weakf +void __weakf(int c) {}], + [weakf(0)])], + [ax_cv_sys_weak_alias_criduplicate=yes], + [ax_cv_sys_weak_alias_criduplicate=no]) + ]) + + # What was the result of the test? + AS_IF([test $ax_cv_sys_weak_alias_criduplicate = yes], [ + test $ax_sys_weak_alias = no && ax_sys_weak_alias=criduplicate + AC_DEFINE([HAVE_SYS_WEAK_ALIAS_CRIDUPLICATE], 1, + [Define this if weak aliases may be created with @%:@pragma _CRI duplicate]) + ]) +]) + +dnl Note: This macro is modeled closely on AC_LINK_IFELSE, and in fact +dnl depends on some implementation details of that macro, particularly +dnl its use of _AC_MSG_LOG_CONFTEST to log the failed test program and +dnl its use of ac_link for running the linker. +AC_DEFUN([_AX_SYS_WEAK_ALIAS_CROSSFILE], +[ # Check to see if weak aliases can cross object file boundaries + AC_CACHE_CHECK([whether $CC supports weak aliases across object file boundaries], + [ax_cv_sys_weak_alias_crossfile], [ + AS_IF([test $ax_cv_sys_weak_alias = no], + [ax_cv_sys_weak_alias_crossfile=no], [ +dnl Must build our own test files... + # conftest1 contains our weak alias definition... + cat >conftest1.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF + cat confdefs.h >>conftest1.$ac_ext + cat >>conftest1.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +@%:@ifndef HAVE_SYS_WEAK_ALIAS_ATTRIBUTE +extern void weakf(int c); +@%:@if defined(HAVE_SYS_WEAK_ALIAS_PRAGMA) +@%:@pragma weak weakf = __weakf +@%:@elif defined(HAVE_SYS_WEAK_ALIAS_HPSECONDARY) +@%:@pragma _HP_SECONDARY_DEF __weakf weakf +@%:@elif defined(HAVE_SYS_WEAK_ALIAS_CRIDUPLICATE) +@%:@pragma _CRI duplicate weakf as __weakf +@%:@endif +@%:@endif +void __weakf(int c) {} +@%:@ifdef HAVE_SYS_WEAK_ALIAS_ATTRIBUTE +void weakf(int c) __attribute((weak, alias("__weakf"))); +@%:@endif +_ACEOF + # And conftest2 contains our main routine that calls it + cat >conftest2.$ac_ext <<_ACEOF +/* confdefs.h. */ +_ACEOF + cat confdefs.h >> conftest2.$ac_ext + cat >>conftest2.$ac_ext <<_ACEOF +/* end confdefs.h. */ + +extern void weakf(int c); +int +main () +{ + weakf(0); + return 0; +} +_ACEOF + # We must remove the object files (if any) ourselves... + rm -f conftest2.$ac_objext conftest$ac_exeext + + # Change ac_link to compile *2* files together + save_aclink=$ac_link + ac_link=`echo "$ac_link" | \ + sed -e 's/conftest\(\.\$ac_ext\)/conftest1\1 conftest2\1/'` +dnl Substitute our own routine for logging the conftest +m4_pushdef([_AC_MSG_LOG_CONFTEST], +[echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD +echo ">>> conftest1.$ac_ext" >&AS_MESSAGE_LOG_FD +sed "s/^/| /" conftest1.$ac_ext >&AS_MESSAGE_LOG_FD +echo ">>> conftest2.$ac_ext" >&AS_MESSAGE_LOG_FD +sed "s/^/| /" conftest2.$ac_ext >&AS_MESSAGE_LOG_FD +])dnl + # Since we created the files ourselves, don't use SOURCE argument + AC_LINK_IFELSE(, [ax_cv_sys_weak_alias_crossfile=yes], + [ax_cv_sys_weak_alias_crossfile=no]) +dnl Restore _AC_MSG_LOG_CONFTEST +m4_popdef([_AC_MSG_LOG_CONFTEST])dnl + # Restore ac_link + ac_link=$save_aclink + + # We must remove the object files (if any) and C files ourselves... + rm -f conftest1.$ac_ext conftest2.$ac_ext \ + conftest1.$ac_objext conftest2.$ac_objext + ]) + ]) + + # What were the results of the test? + AS_IF([test $ax_cv_sys_weak_alias_crossfile = yes], [ + AC_DEFINE([HAVE_SYS_WEAK_ALIAS_CROSSFILE], 1, + [Define this if weak aliases in other files are honored]) + ]) +]) diff --git a/m4/libtool-whole-archive.patch b/m4/libtool-whole-archive.patch new file mode 100644 index 0000000..7e2749c --- /dev/null +++ b/m4/libtool-whole-archive.patch @@ -0,0 +1,18 @@ +--- /usr/share/libtool/build-aux/ltmain.sh 2017-08-01 07:13:09.611041402 +0200 ++++ ltmain.sh 2018-08-31 17:32:15.381903718 +0200 +@@ -8439,8 +8439,13 @@ + # shared platforms. + if test unsupported != "$hardcode_direct"; then + test -n "$old_library" && linklib=$old_library +- compile_deplibs="$dir/$linklib $compile_deplibs" +- finalize_deplibs="$dir/$linklib $finalize_deplibs" ++ if test yes,yes = "$export_dynamic,$with_gnu_ld"; then ++ compile_deplibs="-Wl,--no-whole-archive $dir/$linklib -Wl,--whole-archive $compile_deplibs" ++ finalize_deplibs="-Wl,--no-whole-archive $dir/$linklib -Wl,--whole-archive $finalize_deplibs" ++ else ++ compile_deplibs="$dir/$linklib $compile_deplibs" ++ finalize_deplibs="$dir/$linklib $finalize_deplibs" ++ fi + else + compile_deplibs="-l$name -L$dir $compile_deplibs" + finalize_deplibs="-l$name -L$dir $finalize_deplibs" diff --git a/m4/pkg.m4 b/m4/pkg.m4 new file mode 100644 index 0000000..a8dcd17 --- /dev/null +++ b/m4/pkg.m4 @@ -0,0 +1,214 @@ +# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- +# serial 1 (pkg-config-0.24) +# +# Copyright © 2004 Scott James Remnant <scott@netsplit.com>. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# +# As a special exception to the GNU General Public License, if you +# distribute this file as part of a program that contains a +# configuration script generated by Autoconf, you may include it under +# the same distribution terms that you use for the rest of that program. + +# PKG_PROG_PKG_CONFIG([MIN-VERSION]) +# ---------------------------------- +AC_DEFUN([PKG_PROG_PKG_CONFIG], +[m4_pattern_forbid([^_?PKG_[A-Z_]+$]) +m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$]) +m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$]) +AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) +AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) +AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) + +if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then + AC_PATH_TOOL([PKG_CONFIG], [pkg-config]) +fi +if test -n "$PKG_CONFIG"; then + _pkg_min_version=m4_default([$1], [0.9.0]) + AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version]) + if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + PKG_CONFIG="" + fi +fi[]dnl +])# PKG_PROG_PKG_CONFIG + +# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +# +# Check to see whether a particular set of modules exists. Similar +# to PKG_CHECK_MODULES(), but does not set variables or print errors. +# +# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG]) +# only at the first occurence in configure.ac, so if the first place +# it's called might be skipped (such as if it is within an "if", you +# have to call PKG_CHECK_EXISTS manually +# -------------------------------------------------------------- +AC_DEFUN([PKG_CHECK_EXISTS], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +if test -n "$PKG_CONFIG" && \ + AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then + m4_default([$2], [:]) +m4_ifvaln([$3], [else + $3])dnl +fi]) + +# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES]) +# --------------------------------------------- +m4_define([_PKG_CONFIG], +[if test -n "$$1"; then + pkg_cv_[]$1="$$1" + elif test -n "$PKG_CONFIG"; then + PKG_CHECK_EXISTS([$3], + [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null` + test "x$?" != "x0" && pkg_failed=yes ], + [pkg_failed=yes]) + else + pkg_failed=untried +fi[]dnl +])# _PKG_CONFIG + +# _PKG_SHORT_ERRORS_SUPPORTED +# ----------------------------- +AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG]) +if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then + _pkg_short_errors_supported=yes +else + _pkg_short_errors_supported=no +fi[]dnl +])# _PKG_SHORT_ERRORS_SUPPORTED + + +# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND], +# [ACTION-IF-NOT-FOUND]) +# +# +# Note that if there is a possibility the first call to +# PKG_CHECK_MODULES might not happen, you should be sure to include an +# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac +# +# +# -------------------------------------------------------------- +AC_DEFUN([PKG_CHECK_MODULES], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl +AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl + +pkg_failed=no +AC_MSG_CHECKING([for $1 ($2)]) + +_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2]) +_PKG_CONFIG([$1][_LIBS], [libs], [$2]) + +m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS +and $1[]_LIBS to avoid the need to call pkg-config. +See the pkg-config man page for more details.]) + +if test $pkg_failed = yes; then + AC_MSG_RESULT([no]) + _PKG_SHORT_ERRORS_SUPPORTED + if test $_pkg_short_errors_supported = yes; then + $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1` + else + $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1` + fi + # Put the nasty error message in config.log where it belongs + echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD + + m4_default([$4], [AC_MSG_ERROR( +[Package requirements ($2) were not met: + +$$1_PKG_ERRORS + +Consider adjusting the PKG_CONFIG_PATH environment variable if you +installed software in a non-standard prefix. + +_PKG_TEXT])[]dnl + ]) +elif test $pkg_failed = untried; then + AC_MSG_RESULT([no]) + m4_default([$4], [AC_MSG_FAILURE( +[The pkg-config script could not be found or is too old. Make sure it +is in your PATH or set the PKG_CONFIG environment variable to the full +path to pkg-config. + +_PKG_TEXT + +To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl + ]) +else + $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS + $1[]_LIBS=$pkg_cv_[]$1[]_LIBS + AC_MSG_RESULT([yes]) + $3 +fi[]dnl +])# PKG_CHECK_MODULES + + +# PKG_INSTALLDIR(DIRECTORY) +# ------------------------- +# Substitutes the variable pkgconfigdir as the location where a module +# should install pkg-config .pc files. By default the directory is +# $libdir/pkgconfig, but the default can be changed by passing +# DIRECTORY. The user can override through the --with-pkgconfigdir +# parameter. +AC_DEFUN([PKG_INSTALLDIR], +[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])]) +m4_pushdef([pkg_description], + [pkg-config installation directory @<:@]pkg_default[@:>@]) +AC_ARG_WITH([pkgconfigdir], + [AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],, + [with_pkgconfigdir=]pkg_default) +AC_SUBST([pkgconfigdir], [$with_pkgconfigdir]) +m4_popdef([pkg_default]) +m4_popdef([pkg_description]) +]) dnl PKG_INSTALLDIR + + +# PKG_NOARCH_INSTALLDIR(DIRECTORY) +# ------------------------- +# Substitutes the variable noarch_pkgconfigdir as the location where a +# module should install arch-independent pkg-config .pc files. By +# default the directory is $datadir/pkgconfig, but the default can be +# changed by passing DIRECTORY. The user can override through the +# --with-noarch-pkgconfigdir parameter. +AC_DEFUN([PKG_NOARCH_INSTALLDIR], +[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])]) +m4_pushdef([pkg_description], + [pkg-config arch-independent installation directory @<:@]pkg_default[@:>@]) +AC_ARG_WITH([noarch-pkgconfigdir], + [AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],, + [with_noarch_pkgconfigdir=]pkg_default) +AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir]) +m4_popdef([pkg_default]) +m4_popdef([pkg_description]) +]) dnl PKG_NOARCH_INSTALLDIR + + +# PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE, +# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND]) +# ------------------------------------------- +# Retrieves the value of the pkg-config variable for the given module. +AC_DEFUN([PKG_CHECK_VAR], +[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl +AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl + +_PKG_CONFIG([$1], [variable="][$3]["], [$2]) +AS_VAR_COPY([$1], [pkg_cv_][$1]) + +AS_VAR_IF([$1], [""], [$5], [$4])dnl +])# PKG_CHECK_VAR |