| # Distributed under the OSI-approved BSD 3-Clause License. See accompanying |
| # file Copyright.txt or https://cmake.org/licensing for details. |
| |
| |
| # This module is shared by multiple languages; use include blocker. |
| if(__COMPILER_GNU) |
| return() |
| endif() |
| set(__COMPILER_GNU 1) |
| |
| include(Compiler/CMakeCommonCompilerMacros) |
| |
| set(__pch_header_C "c-header") |
| set(__pch_header_CXX "c++-header") |
| set(__pch_header_OBJC "objective-c-header") |
| set(__pch_header_OBJCXX "objective-c++-header") |
| |
| macro(__compiler_gnu lang) |
| # Feature flags. |
| set(CMAKE_${lang}_VERBOSE_FLAG "-v") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_WARNING_AS_ERROR "-Werror") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_PIC "-fPIC") |
| set (_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER NO) |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_PIE "-fPIE") |
| # Support of PIE at link stage depends on various elements : platform, compiler, linker |
| # so to activate it, module CheckPIESupported must be used. |
| set (_CMAKE_${lang}_PIE_MAY_BE_SUPPORTED_BY_LINKER YES) |
| set(CMAKE_${lang}_LINK_OPTIONS_PIE ${CMAKE_${lang}_COMPILE_OPTIONS_PIE} "-pie") |
| set(CMAKE_${lang}_LINK_OPTIONS_NO_PIE "-no-pie") |
| endif() |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.0) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_VISIBILITY "-fvisibility=") |
| endif() |
| set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "-fPIC") |
| set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "-shared") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_SYSROOT "--sysroot=") |
| |
| set(CMAKE_${lang}_LINKER_WRAPPER_FLAG "-Wl,") |
| set(CMAKE_${lang}_LINKER_WRAPPER_FLAG_SEP ",") |
| |
| # Older versions of gcc (< 4.5) contain a bug causing them to report a missing |
| # header file as a warning if depfiles are enabled, causing check_header_file |
| # tests to always succeed. Work around this by disabling dependency tracking |
| # in try_compile mode. |
| get_property(_IN_TC GLOBAL PROPERTY IN_TRY_COMPILE) |
| if(CMAKE_${lang}_COMPILER_ID STREQUAL "GNU" AND _IN_TC AND NOT CMAKE_FORCE_DEPFILES) |
| else() |
| # distcc does not transform -o to -MT when invoking the preprocessor |
| # internally, as it ought to. Work around this bug by setting -MT here |
| # even though it isn't strictly necessary. |
| set(CMAKE_DEPFILE_FLAGS_${lang} "-MD -MT <DEP_TARGET> -MF <DEP_FILE>") |
| endif() |
| |
| # define flags for linker depfile generation |
| set(CMAKE_${lang}_LINKER_DEPFILE_FLAGS "LINKER:--dependency-file,<DEP_FILE>") |
| set(CMAKE_${lang}_LINKER_DEPFILE_FORMAT gcc) |
| |
| if(NOT DEFINED CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED) |
| ## Ensure ninja tool is recent enough... |
| if(CMAKE_GENERATOR MATCHES "^Ninja") |
| # Ninja 1.10 or upper is required |
| execute_process(COMMAND "${CMAKE_MAKE_PROGRAM}" --version |
| OUTPUT_VARIABLE _ninja_version |
| ERROR_VARIABLE _ninja_version) |
| if (_ninja_version MATCHES "[0-9]+(\\.[0-9]+)*") |
| set (_ninja_version "${CMAKE_MATCH_0}") |
| endif() |
| if (_ninja_version VERSION_LESS "1.10") |
| set(CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED FALSE) |
| endif() |
| unset(_ninja_version) |
| endif() |
| |
| if (NOT DEFINED CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED) |
| ## check if this feature is supported by the linker |
| if (CMAKE_${lang}_COMPILER_LINKER AND CMAKE_${lang}_COMPILER_LINKER_ID MATCHES "GNU|LLD") |
| execute_process(COMMAND "${CMAKE_${lang}_COMPILER_LINKER}" --help |
| OUTPUT_VARIABLE _linker_capabilities |
| ERROR_VARIABLE _linker_capabilities) |
| if(_linker_capabilities MATCHES "--dependency-file") |
| set(CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED TRUE) |
| else() |
| set(CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED FALSE) |
| endif() |
| unset(_linker_capabilities) |
| else() |
| set(CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED FALSE) |
| endif() |
| endif() |
| endif() |
| if (CMAKE_${lang}_LINKER_DEPFILE_SUPPORTED) |
| set(CMAKE_${lang}_LINK_DEPENDS_USE_LINKER TRUE) |
| else() |
| set(CMAKE_${lang}_LINK_DEPENDS_USE_LINKER FALSE) |
| endif() |
| |
| # Due to GNU binutils ld bug when LTO is enabled (see GNU bug |
| # `30568 <https://sourceware.org/bugzilla/show_bug.cgi?id=30568>`_), |
| # deactivate this feature if the version is less than 2.41. |
| # For now, all known versions of gold linker have also this bug. |
| if (CMAKE_${lang}_COMPILER_LINKER_ID |
| AND (CMAKE_${lang}_COMPILER_LINKER_ID STREQUAL "GNUgold" |
| OR (CMAKE_${lang}_COMPILER_LINKER_ID STREQUAL "GNU" |
| AND CMAKE_${lang}_COMPILER_LINKER_VERSION VERSION_LESS "2.41"))) |
| set(CMAKE_${lang}_LINK_DEPENDS_USE_LINKER FALSE) |
| endif() |
| |
| # Initial configuration flags. |
| string(APPEND CMAKE_${lang}_FLAGS_INIT " ") |
| string(APPEND CMAKE_${lang}_FLAGS_DEBUG_INIT " -g") |
| string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -Os") |
| string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -O3") |
| string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g") |
| if(NOT "x${lang}" STREQUAL "xFortran") |
| string(APPEND CMAKE_${lang}_FLAGS_MINSIZEREL_INIT " -DNDEBUG") |
| string(APPEND CMAKE_${lang}_FLAGS_RELEASE_INIT " -DNDEBUG") |
| string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -DNDEBUG") |
| endif() |
| set(CMAKE_${lang}_CREATE_PREPROCESSED_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -E <SOURCE> > <PREPROCESSED_SOURCE>") |
| set(CMAKE_${lang}_CREATE_ASSEMBLY_SOURCE "<CMAKE_${lang}_COMPILER> <DEFINES> <INCLUDES> <FLAGS> -S <SOURCE> -o <ASSEMBLY_SOURCE>") |
| if(NOT APPLE OR NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4) # work around #4462 |
| set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ") |
| endif() |
| |
| set(_CMAKE_${lang}_IPO_SUPPORTED_BY_CMAKE YES) |
| set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER NO) |
| |
| # '-flto' introduced since GCC 4.5: |
| # * https://gcc.gnu.org/onlinedocs/gcc-4.4.7/gcc/Option-Summary.html (no) |
| # * https://gcc.gnu.org/onlinedocs/gcc-4.5.4/gcc/Option-Summary.html (yes) |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.5) |
| set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER YES) |
| |
| set(__lto_flags "") |
| |
| # '-flto=auto' introduced since GCC 10.1: |
| # * https://gcc.gnu.org/onlinedocs/gcc-9.5.0/gcc/Optimize-Options.html#Optimize-Options (no) |
| # * https://gcc.gnu.org/onlinedocs/gcc-10.1.0/gcc/Optimize-Options.html#Optimize-Options (yes) |
| # Since GCC 12.1, the abundance of a parameter produces a warning if compiling multiple targets. |
| # FIXME: What version of GCC for Windows added support for -flto=auto? 10.3 does not have it. |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 11.0) |
| list(APPEND __lto_flags -flto=auto) |
| elseif(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 10.1) |
| if (CMAKE_HOST_WIN32) |
| list(APPEND __lto_flags -flto=1) |
| else() |
| list(APPEND __lto_flags -flto=auto) |
| endif() |
| else() |
| list(APPEND __lto_flags -flto) |
| endif() |
| |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.7 AND NOT APPLE) |
| # '-ffat-lto-objects' introduced since GCC 4.7: |
| # * https://gcc.gnu.org/onlinedocs/gcc-4.6.4/gcc/Option-Summary.html (no) |
| # * https://gcc.gnu.org/onlinedocs/gcc-4.7.4/gcc/Option-Summary.html (yes) |
| list(APPEND __lto_flags -fno-fat-lto-objects) |
| endif() |
| |
| set(CMAKE_${lang}_COMPILE_OPTIONS_IPO ${__lto_flags}) |
| |
| # Need to use version of 'ar'/'ranlib' with plugin support. |
| # Quote from [documentation][1]: |
| # |
| # To create static libraries suitable for LTO, |
| # use gcc-ar and gcc-ranlib instead of ar and ranlib |
| # |
| # [1]: https://gcc.gnu.org/onlinedocs/gcc-4.9.4/gcc/Optimize-Options.html |
| set(CMAKE_${lang}_ARCHIVE_CREATE_IPO |
| "\"${CMAKE_${lang}_COMPILER_AR}\" qc <TARGET> <LINK_FLAGS> <OBJECTS>" |
| ) |
| |
| set(CMAKE_${lang}_ARCHIVE_APPEND_IPO |
| "\"${CMAKE_${lang}_COMPILER_AR}\" q <TARGET> <LINK_FLAGS> <OBJECTS>" |
| ) |
| |
| set(CMAKE_${lang}_ARCHIVE_FINISH_IPO |
| "\"${CMAKE_${lang}_COMPILER_RANLIB}\" <TARGET>" |
| ) |
| endif() |
| |
| if("${lang}" STREQUAL "CXX") |
| set(CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "${CMAKE_${lang}_COMPILER}") |
| if(CMAKE_${lang}_COMPILER_ARG1) |
| separate_arguments(_COMPILER_ARGS NATIVE_COMMAND "${CMAKE_${lang}_COMPILER_ARG1}") |
| list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND ${_COMPILER_ARGS}) |
| unset(_COMPILER_ARGS) |
| endif() |
| list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "-dM" "-E" "-c" "${CMAKE_ROOT}/Modules/CMakeCXXCompilerABI.cpp") |
| endif() |
| |
| if(NOT "x${lang}" STREQUAL "xFortran") |
| set(CMAKE_PCH_EXTENSION .gch) |
| if (NOT CMAKE_GENERATOR MATCHES "Xcode") |
| set(CMAKE_PCH_PROLOGUE "#pragma GCC system_header") |
| endif() |
| set(CMAKE_${lang}_COMPILE_OPTIONS_INVALID_PCH -Winvalid-pch) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_USE_PCH -include <PCH_HEADER>) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_CREATE_PCH -x ${__pch_header_${lang}} -include <PCH_HEADER>) |
| endif() |
| |
| # '-fdiagnostics-color=always' introduced since GCC 4.9 |
| # https://gcc.gnu.org/gcc-4.9/changes.html |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 4.9) |
| set(CMAKE_${lang}_COMPILE_OPTIONS_COLOR_DIAGNOSTICS "-fdiagnostics-color=always") |
| set(CMAKE_${lang}_COMPILE_OPTIONS_COLOR_DIAGNOSTICS_OFF "-fno-diagnostics-color") |
| endif() |
| endmacro() |
| |
| macro(__compiler_gnu_c_standards lang) |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.5) |
| set(CMAKE_${lang}90_STANDARD_COMPILE_OPTION "-std=c90") |
| set(CMAKE_${lang}90_EXTENSION_COMPILE_OPTION "-std=gnu90") |
| set(CMAKE_${lang}_STANDARD_LATEST 90) |
| elseif (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) |
| set(CMAKE_${lang}90_STANDARD_COMPILE_OPTION "-std=c89") |
| set(CMAKE_${lang}90_EXTENSION_COMPILE_OPTION "-std=gnu89") |
| set(CMAKE_${lang}_STANDARD_LATEST 90) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) |
| set(CMAKE_${lang}90_STANDARD__HAS_FULL_SUPPORT ON) |
| set(CMAKE_${lang}99_STANDARD_COMPILE_OPTION "-std=c99") |
| set(CMAKE_${lang}99_EXTENSION_COMPILE_OPTION "-std=gnu99") |
| set(CMAKE_${lang}99_STANDARD__HAS_FULL_SUPPORT ON) |
| set(CMAKE_${lang}_STANDARD_LATEST 99) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.7) |
| set(CMAKE_${lang}11_STANDARD_COMPILE_OPTION "-std=c11") |
| set(CMAKE_${lang}11_EXTENSION_COMPILE_OPTION "-std=gnu11") |
| set(CMAKE_${lang}11_STANDARD__HAS_FULL_SUPPORT ON) |
| set(CMAKE_${lang}_STANDARD_LATEST 11) |
| elseif (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.6) |
| set(CMAKE_${lang}11_STANDARD_COMPILE_OPTION "-std=c1x") |
| set(CMAKE_${lang}11_EXTENSION_COMPILE_OPTION "-std=gnu1x") |
| set(CMAKE_${lang}_STANDARD_LATEST 11) |
| endif() |
| |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 8.1) |
| set(CMAKE_${lang}17_STANDARD_COMPILE_OPTION "-std=c17") |
| set(CMAKE_${lang}17_EXTENSION_COMPILE_OPTION "-std=gnu17") |
| set(CMAKE_${lang}_STANDARD_LATEST 17) |
| endif() |
| |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 9.1) |
| set(CMAKE_${lang}23_STANDARD_COMPILE_OPTION "-std=c2x") |
| set(CMAKE_${lang}23_EXTENSION_COMPILE_OPTION "-std=gnu2x") |
| set(CMAKE_${lang}_STANDARD_LATEST 23) |
| endif() |
| endmacro() |
| |
| macro(__compiler_gnu_cxx_standards lang) |
| if(NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4) |
| set(CMAKE_${lang}98_STANDARD_COMPILE_OPTION "-std=c++98") |
| set(CMAKE_${lang}98_EXTENSION_COMPILE_OPTION "-std=gnu++98") |
| set(CMAKE_${lang}_STANDARD_LATEST 98) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.7) |
| set(CMAKE_${lang}98_STANDARD__HAS_FULL_SUPPORT ON) |
| set(CMAKE_${lang}11_STANDARD_COMPILE_OPTION "-std=c++11") |
| set(CMAKE_${lang}11_EXTENSION_COMPILE_OPTION "-std=gnu++11") |
| set(CMAKE_${lang}_STANDARD_LATEST 11) |
| elseif (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.4) |
| # 4.3 supports 0x variants |
| set(CMAKE_${lang}11_STANDARD_COMPILE_OPTION "-std=c++0x") |
| set(CMAKE_${lang}11_EXTENSION_COMPILE_OPTION "-std=gnu++0x") |
| set(CMAKE_${lang}_STANDARD_LATEST 11) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.8.1) |
| set(CMAKE_${lang}11_STANDARD__HAS_FULL_SUPPORT ON) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.9) |
| set(CMAKE_${lang}14_STANDARD_COMPILE_OPTION "-std=c++14") |
| set(CMAKE_${lang}14_EXTENSION_COMPILE_OPTION "-std=gnu++14") |
| set(CMAKE_${lang}_STANDARD_LATEST 14) |
| elseif (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 4.8) |
| set(CMAKE_${lang}14_STANDARD_COMPILE_OPTION "-std=c++1y") |
| set(CMAKE_${lang}14_EXTENSION_COMPILE_OPTION "-std=gnu++1y") |
| set(CMAKE_${lang}_STANDARD_LATEST 14) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 5.0) |
| set(CMAKE_${lang}14_STANDARD__HAS_FULL_SUPPORT ON) |
| endif() |
| |
| if (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 8.0) |
| set(CMAKE_${lang}17_STANDARD_COMPILE_OPTION "-std=c++17") |
| set(CMAKE_${lang}17_EXTENSION_COMPILE_OPTION "-std=gnu++17") |
| set(CMAKE_${lang}_STANDARD_LATEST 17) |
| elseif (NOT CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 5.1) |
| set(CMAKE_${lang}17_STANDARD_COMPILE_OPTION "-std=c++1z") |
| set(CMAKE_${lang}17_EXTENSION_COMPILE_OPTION "-std=gnu++1z") |
| set(CMAKE_${lang}_STANDARD_LATEST 17) |
| endif() |
| |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 11.1) |
| set(CMAKE_${lang}20_STANDARD_COMPILE_OPTION "-std=c++20") |
| set(CMAKE_${lang}20_EXTENSION_COMPILE_OPTION "-std=gnu++20") |
| set(CMAKE_${lang}23_STANDARD_COMPILE_OPTION "-std=c++23") |
| set(CMAKE_${lang}23_EXTENSION_COMPILE_OPTION "-std=gnu++23") |
| set(CMAKE_${lang}_STANDARD_LATEST 23) |
| elseif(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 8.0) |
| set(CMAKE_${lang}20_STANDARD_COMPILE_OPTION "-std=c++2a") |
| set(CMAKE_${lang}20_EXTENSION_COMPILE_OPTION "-std=gnu++2a") |
| set(CMAKE_${lang}_STANDARD_LATEST 20) |
| endif() |
| |
| if(CMAKE_${lang}_COMPILER_VERSION VERSION_GREATER_EQUAL 14.0) |
| set(CMAKE_${lang}26_STANDARD_COMPILE_OPTION "-std=c++26") |
| set(CMAKE_${lang}26_EXTENSION_COMPILE_OPTION "-std=gnu++26") |
| set(CMAKE_${lang}_STANDARD_LATEST 26) |
| endif() |
| endmacro() |