# Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # Check if the target architecture and compiler supports some special # instruction sets that would boost performance. include(CheckCXXCompilerFlag) include(CheckCXXSourceCompiles) # Get cpu architecture message(STATUS "System processor: ${CMAKE_SYSTEM_PROCESSOR}") if(NOT DEFINED ARROW_CPU_FLAG) if(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|ARM64|arm64") set(ARROW_CPU_FLAG "armv8") elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "armv7") set(ARROW_CPU_FLAG "armv7") elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "powerpc|ppc") set(ARROW_CPU_FLAG "ppc") elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "s390x") set(ARROW_CPU_FLAG "s390x") else() set(ARROW_CPU_FLAG "x86") endif() endif() # Check architecture specific compiler flags if(ARROW_CPU_FLAG STREQUAL "x86") # x86/amd64 compiler flags, msvc/gcc/clang if(MSVC) set(ARROW_SSE4_2_FLAG "") set(ARROW_AVX2_FLAG "/arch:AVX2") set(ARROW_AVX512_FLAG "/arch:AVX512") set(CXX_SUPPORTS_SSE4_2 TRUE) else() set(ARROW_SSE4_2_FLAG "-msse4.2") set(ARROW_AVX2_FLAG "-march=haswell") # skylake-avx512 consists of AVX512F,AVX512BW,AVX512VL,AVX512CD,AVX512DQ set(ARROW_AVX512_FLAG "-march=skylake-avx512 -mbmi2") # Append the avx2/avx512 subset option also, fix issue ARROW-9877 for homebrew-cpp set(ARROW_AVX2_FLAG "${ARROW_AVX2_FLAG} -mavx2") set(ARROW_AVX512_FLAG "${ARROW_AVX512_FLAG} -mavx512f -mavx512cd -mavx512vl -mavx512dq -mavx512bw") check_cxx_compiler_flag(${ARROW_SSE4_2_FLAG} CXX_SUPPORTS_SSE4_2) endif() check_cxx_compiler_flag(${ARROW_AVX2_FLAG} CXX_SUPPORTS_AVX2) if(MINGW) # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65782 message(STATUS "Disable AVX512 support on MINGW for now") else() # Check for AVX512 support in the compiler. set(OLD_CMAKE_REQURED_FLAGS ${CMAKE_REQUIRED_FLAGS}) set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${ARROW_AVX512_FLAG}") check_cxx_source_compiles(" #ifdef _MSC_VER #include #else #include #endif int main() { __m512i mask = _mm512_set1_epi32(0x1); char out[32]; _mm512_storeu_si512(out, mask); return 0; }" CXX_SUPPORTS_AVX512) set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQURED_FLAGS}) endif() # Runtime SIMD level it can get from compiler and ARROW_RUNTIME_SIMD_LEVEL if(CXX_SUPPORTS_SSE4_2 AND ARROW_RUNTIME_SIMD_LEVEL MATCHES "^(SSE4_2|AVX2|AVX512|MAX)$") set(ARROW_HAVE_RUNTIME_SSE4_2 ON) add_definitions(-DARROW_HAVE_RUNTIME_SSE4_2) endif() if(CXX_SUPPORTS_AVX2 AND ARROW_RUNTIME_SIMD_LEVEL MATCHES "^(AVX2|AVX512|MAX)$") set(ARROW_HAVE_RUNTIME_AVX2 ON) add_definitions(-DARROW_HAVE_RUNTIME_AVX2 -DARROW_HAVE_RUNTIME_BMI2) endif() if(CXX_SUPPORTS_AVX512 AND ARROW_RUNTIME_SIMD_LEVEL MATCHES "^(AVX512|MAX)$") set(ARROW_HAVE_RUNTIME_AVX512 ON) add_definitions(-DARROW_HAVE_RUNTIME_AVX512 -DARROW_HAVE_RUNTIME_BMI2) endif() if(ARROW_SIMD_LEVEL STREQUAL "DEFAULT") set(ARROW_SIMD_LEVEL "SSE4_2") endif() elseif(ARROW_CPU_FLAG STREQUAL "ppc") # power compiler flags, gcc/clang only set(ARROW_ALTIVEC_FLAG "-maltivec") check_cxx_compiler_flag(${ARROW_ALTIVEC_FLAG} CXX_SUPPORTS_ALTIVEC) if(ARROW_SIMD_LEVEL STREQUAL "DEFAULT") set(ARROW_SIMD_LEVEL "NONE") endif() elseif(ARROW_CPU_FLAG STREQUAL "armv8") # Arm64 compiler flags, gcc/clang only set(ARROW_ARMV8_ARCH_FLAG "-march=${ARROW_ARMV8_ARCH}") check_cxx_compiler_flag(${ARROW_ARMV8_ARCH_FLAG} CXX_SUPPORTS_ARMV8_ARCH) if(ARROW_SIMD_LEVEL STREQUAL "DEFAULT") set(ARROW_SIMD_LEVEL "NEON") endif() endif() # Support C11 if(NOT DEFINED CMAKE_C_STANDARD) set(CMAKE_C_STANDARD 11) endif() # This ensures that things like c++11 get passed correctly if(NOT DEFINED CMAKE_CXX_STANDARD) set(CMAKE_CXX_STANDARD 11) endif() # We require a C++11 compliant compiler set(CMAKE_CXX_STANDARD_REQUIRED ON) # ARROW-6848: Do not use GNU (or other CXX) extensions set(CMAKE_CXX_EXTENSIONS OFF) # Build with -fPIC so that can static link our libraries into other people's # shared libraries set(CMAKE_POSITION_INDEPENDENT_CODE ON) string(TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE) set(UNKNOWN_COMPILER_MESSAGE "Unknown compiler: ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}") # compiler flags that are common across debug/release builds if(WIN32) # TODO(wesm): Change usages of C runtime functions that MSVC says are # insecure, like std::getenv add_definitions(-D_CRT_SECURE_NO_WARNINGS) if(MSVC) if(MSVC_VERSION VERSION_LESS 19) message(FATAL_ERROR "Only MSVC 2015 (Version 19.0) and later are supported by Arrow. Found version ${CMAKE_CXX_COMPILER_VERSION}.") endif() # ARROW-1931 See https://github.com/google/googletest/issues/1318 # # This is added to CMAKE_CXX_FLAGS instead of CXX_COMMON_FLAGS since only the # former is passed into the external projects set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING") if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang") # clang-cl set(CXX_COMMON_FLAGS "-EHsc") else() # Fix annoying D9025 warning string(REPLACE "/W3" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") # Set desired warning level (e.g. set /W4 for more warnings) # # ARROW-2986: Without /EHsc we get C4530 warning set(CXX_COMMON_FLAGS "/W3 /EHsc") endif() # Disable C5105 (macro expansion producing 'defined' has undefined # behavior) warning because there are codes that produce this # warning in Windows Kits. e.g.: # # #define _CRT_INTERNAL_NONSTDC_NAMES \ # ( \ # ( defined _CRT_DECLARE_NONSTDC_NAMES && _CRT_DECLARE_NONSTDC_NAMES) || \ # (!defined _CRT_DECLARE_NONSTDC_NAMES && !__STDC__ ) \ # ) # # See also: # * C5105: https://docs.microsoft.com/en-US/cpp/error-messages/compiler-warnings/c5105 # * Related reports: # * https://developercommunity.visualstudio.com/content/problem/387684/c5105-with-stdioh-and-experimentalpreprocessor.html # * https://developercommunity.visualstudio.com/content/problem/1249671/stdc17-generates-warning-compiling-windowsh.html set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd5105") if(ARROW_USE_STATIC_CRT) foreach(c_flag CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG CMAKE_CXX_FLAGS_MINSIZEREL CMAKE_CXX_FLAGS_RELWITHDEBINFO CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG CMAKE_C_FLAGS_MINSIZEREL CMAKE_C_FLAGS_RELWITHDEBINFO) string(REPLACE "/MD" "-MT" ${c_flag} "${${c_flag}}") endforeach() endif() # Support large object code set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /bigobj") # We may use UTF-8 in source code such as # cpp/src/arrow/compute/kernels/scalar_string_test.cc set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /utf-8") else() # MinGW check_cxx_compiler_flag(-Wa,-mbig-obj CXX_SUPPORTS_BIG_OBJ) if(CXX_SUPPORTS_BIG_OBJ) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wa,-mbig-obj") endif() endif(MSVC) else() # Common flags set below with warning level set(CXX_COMMON_FLAGS "") endif() # BUILD_WARNING_LEVEL add warning/error compiler flags. The possible values are # - PRODUCTION: Build with `-Wall` but do not add `-Werror`, so warnings do not # halt the build. # - CHECKIN: Build with `-Wall` and `-Wextra`. Also, add `-Werror` in debug mode # so that any important warnings fail the build. # - EVERYTHING: Like `CHECKIN`, but possible extra flags depending on the # compiler, including `-Wextra`, `-Weverything`, `-pedantic`. # This is the most aggressive warning level. # Defaults BUILD_WARNING_LEVEL to `CHECKIN`, unless CMAKE_BUILD_TYPE is # `RELEASE`, then it will default to `PRODUCTION`. The goal of defaulting to # `CHECKIN` is to avoid friction with long response time from CI. if(NOT BUILD_WARNING_LEVEL) if("${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE") set(BUILD_WARNING_LEVEL PRODUCTION) else() set(BUILD_WARNING_LEVEL CHECKIN) endif() endif(NOT BUILD_WARNING_LEVEL) string(TOUPPER ${BUILD_WARNING_LEVEL} BUILD_WARNING_LEVEL) message(STATUS "Arrow build warning level: ${BUILD_WARNING_LEVEL}") macro(arrow_add_werror_if_debug) if("${CMAKE_BUILD_TYPE}" STREQUAL "DEBUG") # Treat all compiler warnings as errors if(MSVC) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /WX") else() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Werror") endif() endif() endmacro() if("${BUILD_WARNING_LEVEL}" STREQUAL "CHECKIN") # Pre-checkin builds if(MSVC) # https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warnings-by-compiler-version set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /W3") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4365") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4267") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4838") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wextra") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wdocumentation") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-missing-braces") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-unused-parameter") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-constant-logical-operand") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-conversion") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-deprecated-declarations") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-sign-conversion") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel") if(WIN32) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wall") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wno-deprecated") else() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-deprecated") endif() else() message(FATAL_ERROR "${UNKNOWN_COMPILER_MESSAGE}") endif() arrow_add_werror_if_debug() elseif("${BUILD_WARNING_LEVEL}" STREQUAL "EVERYTHING") # Pedantic builds for fixing warnings if(MSVC) string(REPLACE "/W3" "" CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS}") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wall") # https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level # /wdnnnn disables a warning where "nnnn" is a warning number elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Weverything") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-c++98-compat") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-c++98-compat-pedantic") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wpedantic") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wextra") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-unused-parameter") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel") if(WIN32) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wall") else() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") endif() else() message(FATAL_ERROR "${UNKNOWN_COMPILER_MESSAGE}") endif() arrow_add_werror_if_debug() else() # Production builds (warning are not treated as errors) if(MSVC) # https://docs.microsoft.com/en-us/cpp/build/reference/compiler-option-warning-level # TODO: Enable /Wall and disable individual warnings until build compiles without errors # /wdnnnn disables a warning where "nnnn" is a warning number string(REPLACE "/W3" "" CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS}") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /W3") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU") set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Intel") if(WIN32) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /Wall") else() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall") endif() else() message(FATAL_ERROR "${UNKNOWN_COMPILER_MESSAGE}") endif() endif() if(MSVC) # Disable annoying "performance warning" about int-to-bool conversion set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4800") # Disable unchecked iterator warnings, equivalent to /D_SCL_SECURE_NO_WARNINGS set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4996") # Disable "switch statement contains 'default' but no 'case' labels" warning # (required for protobuf, see https://github.com/protocolbuffers/protobuf/issues/6885) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} /wd4065") elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU") if(CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL "7.0" OR CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "7.0") # Without this, gcc >= 7 warns related to changes in C++17 set(CXX_ONLY_FLAGS "${CXX_ONLY_FLAGS} -Wno-noexcept-type") endif() if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "5.2") # Disabling semantic interposition allows faster calling conventions # when calling global functions internally, and can also help inlining. # See https://stackoverflow.com/questions/35745543/new-option-in-gcc-5-3-fno-semantic-interposition set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -fno-semantic-interposition") endif() if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.9") # Add colors when paired with ninja set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fdiagnostics-color=always") endif() if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "6.0") # Work around https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43407 set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-attributes") endif() if(CMAKE_UNITY_BUILD) # Work around issue similar to https://bugs.webkit.org/show_bug.cgi?id=176869 set(CXX_ONLY_FLAGS "${CXX_ONLY_FLAGS} -Wno-subobject-linkage") endif() elseif(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang") # Clang options for all builds # Using Clang with ccache causes a bunch of spurious warnings that are # purportedly fixed in the next version of ccache. See the following for details: # # http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html # http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Qunused-arguments") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments") # Avoid error when an unknown warning flag is passed set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-unknown-warning-option") # Add colors when paired with ninja set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics") # Don't complain about optimization passes that were not possible set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-pass-failed") if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang") # Depending on the default OSX_DEPLOYMENT_TARGET (< 10.9), libstdc++ may be # the default standard library which does not support C++11. libc++ is the # default from 10.9 onward. set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -stdlib=libc++") endif() endif() # if build warning flags is set, add to CXX_COMMON_FLAGS if(BUILD_WARNING_FLAGS) # Use BUILD_WARNING_FLAGS with BUILD_WARNING_LEVEL=everything to disable # warnings (use with Clang's -Weverything flag to find potential errors) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${BUILD_WARNING_FLAGS}") endif(BUILD_WARNING_FLAGS) # Only enable additional instruction sets if they are supported if(ARROW_CPU_FLAG STREQUAL "x86") if(MINGW) # Enable _xgetbv() intrinsic to query OS support for ZMM register saves set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -mxsave") endif() if(ARROW_SIMD_LEVEL STREQUAL "AVX512") if(NOT CXX_SUPPORTS_AVX512) message(FATAL_ERROR "AVX512 required but compiler doesn't support it.") endif() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${ARROW_AVX512_FLAG}") add_definitions(-DARROW_HAVE_AVX512 -DARROW_HAVE_AVX2 -DARROW_HAVE_BMI2 -DARROW_HAVE_SSE4_2) elseif(ARROW_SIMD_LEVEL STREQUAL "AVX2") if(NOT CXX_SUPPORTS_AVX2) message(FATAL_ERROR "AVX2 required but compiler doesn't support it.") endif() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${ARROW_AVX2_FLAG}") add_definitions(-DARROW_HAVE_AVX2 -DARROW_HAVE_BMI2 -DARROW_HAVE_SSE4_2) elseif(ARROW_SIMD_LEVEL STREQUAL "SSE4_2") if(NOT CXX_SUPPORTS_SSE4_2) message(FATAL_ERROR "SSE4.2 required but compiler doesn't support it.") endif() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${ARROW_SSE4_2_FLAG}") add_definitions(-DARROW_HAVE_SSE4_2) elseif(NOT ARROW_SIMD_LEVEL STREQUAL "NONE") message(WARNING "ARROW_SIMD_LEVEL=${ARROW_SIMD_LEVEL} not supported by x86.") endif() endif() if(ARROW_CPU_FLAG STREQUAL "ppc") if(CXX_SUPPORTS_ALTIVEC AND ARROW_ALTIVEC) set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${ARROW_ALTIVEC_FLAG}") endif() endif() if(ARROW_CPU_FLAG STREQUAL "armv8") if(ARROW_SIMD_LEVEL STREQUAL "NEON") set(ARROW_HAVE_NEON ON) if(NOT CXX_SUPPORTS_ARMV8_ARCH) message(FATAL_ERROR "Unsupported arch flag: ${ARROW_ARMV8_ARCH_FLAG}.") endif() if(ARROW_ARMV8_ARCH_FLAG MATCHES "native") message(FATAL_ERROR "native arch not allowed, please specify arch explicitly.") endif() set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} ${ARROW_ARMV8_ARCH_FLAG}") add_definitions(-DARROW_HAVE_NEON) if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.4") message(WARNING "Disable Armv8 CRC and Crypto as compiler doesn't support them well." ) else() if(ARROW_ARMV8_ARCH_FLAG MATCHES "\\+crypto") add_definitions(-DARROW_HAVE_ARMV8_CRYPTO) endif() # armv8.1+ implies crc support if(ARROW_ARMV8_ARCH_FLAG MATCHES "armv8\\.[1-9]|\\+crc") add_definitions(-DARROW_HAVE_ARMV8_CRC) endif() endif() elseif(NOT ARROW_SIMD_LEVEL STREQUAL "NONE") message(WARNING "ARROW_SIMD_LEVEL=${ARROW_SIMD_LEVEL} not supported by Arm.") endif() endif() # ---------------------------------------------------------------------- # Setup Gold linker, if available. Code originally from Apache Kudu # Interrogates the linker version via the C++ compiler to determine whether # we're using the gold linker, and if so, extracts its version. # # If the gold linker is being used, sets GOLD_VERSION in the parent scope with # the extracted version. # # Any additional arguments are passed verbatim into the C++ compiler invocation. function(GET_GOLD_VERSION) # The gold linker is only for ELF binaries, which macOS doesn't use. execute_process(COMMAND ${CMAKE_CXX_COMPILER} "-Wl,--version" ${ARGN} ERROR_QUIET OUTPUT_VARIABLE LINKER_OUTPUT) # We're expecting LINKER_OUTPUT to look like one of these: # GNU gold (version 2.24) 1.11 # GNU gold (GNU Binutils for Ubuntu 2.30) 1.15 if(LINKER_OUTPUT MATCHES "GNU gold") string(REGEX MATCH "GNU gold \\([^\\)]*\\) (([0-9]+\\.?)+)" _ "${LINKER_OUTPUT}") if(NOT CMAKE_MATCH_1) message(SEND_ERROR "Could not extract GNU gold version. " "Linker version output: ${LINKER_OUTPUT}") endif() set(GOLD_VERSION "${CMAKE_MATCH_1}" PARENT_SCOPE) endif() endfunction() # Is the compiler hard-wired to use the gold linker? if(NOT WIN32 AND NOT APPLE) get_gold_version() if(GOLD_VERSION) set(MUST_USE_GOLD 1) elseif(ARROW_USE_LD_GOLD) # Can the compiler optionally enable the gold linker? get_gold_version("-fuse-ld=gold") # We can't use the gold linker if it's inside devtoolset because the compiler # won't find it when invoked directly from make/ninja (which is typically # done outside devtoolset). execute_process(COMMAND which ld.gold OUTPUT_VARIABLE GOLD_LOCATION OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET) if("${GOLD_LOCATION}" MATCHES "^/opt/rh/devtoolset") message("Skipping optional gold linker (version ${GOLD_VERSION}) because " "it's in devtoolset") set(GOLD_VERSION) endif() endif() if(GOLD_VERSION) # Older versions of the gold linker are vulnerable to a bug [1] which # prevents weak symbols from being overridden properly. This leads to # omitting of dependencies like tcmalloc (used in Kudu, where this # workaround was written originally) # # How we handle this situation depends on other factors: # - If gold is optional, we won't use it. # - If gold is required, we'll either: # - Raise an error in RELEASE builds (we shouldn't release such a product), or # - Drop tcmalloc in all other builds. # # 1. https://sourceware.org/bugzilla/show_bug.cgi?id=16979. if("${GOLD_VERSION}" VERSION_LESS "1.12") set(ARROW_BUGGY_GOLD 1) endif() if(MUST_USE_GOLD) message("Using hard-wired gold linker (version ${GOLD_VERSION})") if(ARROW_BUGGY_GOLD) if("${ARROW_LINK}" STREQUAL "d" AND "${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE") message(SEND_ERROR "Configured to use buggy gold with dynamic linking " "in a RELEASE build") endif() endif() elseif(NOT ARROW_BUGGY_GOLD) # The Gold linker must be manually enabled. set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fuse-ld=gold") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fuse-ld=gold") message("Using optional gold linker (version ${GOLD_VERSION})") else() message("Optional gold linker is buggy, using ld linker instead") endif() else() message("Using ld linker") endif() endif() # compiler flags for different build types (run 'cmake -DCMAKE_BUILD_TYPE= .') # For all builds: # For CMAKE_BUILD_TYPE=Debug # -ggdb: Enable gdb debugging # For CMAKE_BUILD_TYPE=FastDebug # Same as DEBUG, except with some optimizations on. # For CMAKE_BUILD_TYPE=Release # -O3: Enable all compiler optimizations # Debug symbols are stripped for reduced binary size. Add # -DARROW_CXXFLAGS="-g" to add them if(NOT MSVC) if(ARROW_GGDB_DEBUG) set(ARROW_DEBUG_SYMBOL_TYPE "gdb") set(C_FLAGS_DEBUG "-g${ARROW_DEBUG_SYMBOL_TYPE} -O0") set(C_FLAGS_FASTDEBUG "-g${ARROW_DEBUG_SYMBOL_TYPE} -O1") set(CXX_FLAGS_DEBUG "-g${ARROW_DEBUG_SYMBOL_TYPE} -O0") set(CXX_FLAGS_FASTDEBUG "-g${ARROW_DEBUG_SYMBOL_TYPE} -O1") else() set(C_FLAGS_DEBUG "-g -O0") set(C_FLAGS_FASTDEBUG "-g -O1") set(CXX_FLAGS_DEBUG "-g -O0") set(CXX_FLAGS_FASTDEBUG "-g -O1") endif() set(C_FLAGS_RELEASE "-O3 -DNDEBUG") set(CXX_FLAGS_RELEASE "-O3 -DNDEBUG") endif() set(C_FLAGS_PROFILE_GEN "${CXX_FLAGS_RELEASE} -fprofile-generate") set(C_FLAGS_PROFILE_BUILD "${CXX_FLAGS_RELEASE} -fprofile-use") set(CXX_FLAGS_PROFILE_GEN "${CXX_FLAGS_RELEASE} -fprofile-generate") set(CXX_FLAGS_PROFILE_BUILD "${CXX_FLAGS_RELEASE} -fprofile-use") # Set compile flags based on the build type. message("Configured for ${CMAKE_BUILD_TYPE} build (set with cmake -DCMAKE_BUILD_TYPE={release,debug,...})" ) if("${CMAKE_BUILD_TYPE}" STREQUAL "DEBUG") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_DEBUG}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_DEBUG}") elseif("${CMAKE_BUILD_TYPE}" STREQUAL "RELWITHDEBINFO") elseif("${CMAKE_BUILD_TYPE}" STREQUAL "FASTDEBUG") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_FASTDEBUG}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_FASTDEBUG}") elseif("${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_RELEASE}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_RELEASE}") elseif("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_GEN") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_PROFILE_GEN}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_PROFILE_GEN}") elseif("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_BUILD") set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${C_FLAGS_PROFILE_BUILD}") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX_FLAGS_PROFILE_BUILD}") else() message(FATAL_ERROR "Unknown build type: ${CMAKE_BUILD_TYPE}") endif() message(STATUS "Build Type: ${CMAKE_BUILD_TYPE}") # ---------------------------------------------------------------------- # MSVC-specific linker options if(MSVC) set(MSVC_LINKER_FLAGS) if(MSVC_LINK_VERBOSE) set(MSVC_LINKER_FLAGS "${MSVC_LINKER_FLAGS} /VERBOSE:LIB") endif() if(NOT ARROW_USE_STATIC_CRT) set(MSVC_LINKER_FLAGS "${MSVC_LINKER_FLAGS} /NODEFAULTLIB:LIBCMT") set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LINKER_FLAGS}") set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${MSVC_LINKER_FLAGS}") set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${MSVC_LINKER_FLAGS}") endif() endif()