include(Compiler/GNU) __compiler_gnu(C) if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5) set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90") set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90") elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4) set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c89") set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu89") endif() if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4) set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99") set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99") endif() if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7) set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11") set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11") elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6) set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c1x") set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu1x") endif() if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4) if (NOT CMAKE_C_COMPILER_FORCED) if (NOT CMAKE_C_STANDARD_COMPUTED_DEFAULT) message(FATAL_ERROR "CMAKE_C_STANDARD_COMPUTED_DEFAULT should be set for ${CMAKE_C_COMPILER_ID} (${CMAKE_C_COMPILER}) version ${CMAKE_C_COMPILER_VERSION}") endif() set(CMAKE_C_STANDARD_DEFAULT ${CMAKE_C_STANDARD_COMPUTED_DEFAULT}) endif() endif() macro(cmake_record_c_compile_features) macro(_get_gcc_features std_version list) record_compiler_features(C "${std_version}" ${list}) endmacro() set(_result 0) if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6) _get_gcc_features(${CMAKE_C11_STANDARD_COMPILE_OPTION} CMAKE_C11_COMPILE_FEATURES) endif() if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.4) if (_result EQUAL 0) _get_gcc_features(${CMAKE_C99_STANDARD_COMPILE_OPTION} CMAKE_C99_COMPILE_FEATURES) endif() if (_result EQUAL 0) _get_gcc_features(${CMAKE_C90_STANDARD_COMPILE_OPTION} CMAKE_C90_COMPILE_FEATURES) endif() endif() endmacro()