| include(Compiler/Clang) |
| __compiler_clang(C) |
| |
| cmake_policy(GET CMP0025 appleClangPolicy) |
| if(APPLE AND NOT appleClangPolicy STREQUAL NEW) |
| return() |
| endif() |
| |
| if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC") |
| set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TC) |
| set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl") |
| set(CMAKE_C_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl") |
| if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER) |
| AND CMAKE_GENERATOR MATCHES "Makefiles|WMake" |
| AND CMAKE_DEPFILE_FLAGS_C) |
| set(CMAKE_C_DEPENDS_USE_COMPILER TRUE) |
| endif() |
| elseif("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU") |
| set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c) |
| if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER) |
| AND CMAKE_GENERATOR MATCHES "Makefiles|WMake" |
| AND CMAKE_DEPFILE_FLAGS_C) |
| # dependencies are computed by the compiler itself |
| set(CMAKE_C_DEPFILE_FORMAT gcc) |
| set(CMAKE_C_DEPENDS_USE_COMPILER TRUE) |
| endif() |
| endif() |
| |
| if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU") |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 2.1) |
| set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90") |
| set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90") |
| |
| set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99") |
| set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99") |
| endif() |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.1) |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11") |
| elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.0) |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c1x") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu1x") |
| endif() |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 6.0) |
| set(CMAKE_C17_STANDARD_COMPILE_OPTION "-std=c17") |
| set(CMAKE_C17_EXTENSION_COMPILE_OPTION "-std=gnu17") |
| endif() |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.0) |
| set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c2x") |
| set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu2x") |
| endif() |
| else() |
| set(CMAKE_C90_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C90_EXTENSION_COMPILE_OPTION "") |
| set(CMAKE_C99_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C99_EXTENSION_COMPILE_OPTION "") |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 13.0) |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "/std:c11") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "/std:c11") |
| |
| set(CMAKE_C17_STANDARD_COMPILE_OPTION "/std:c17") |
| set(CMAKE_C17_EXTENSION_COMPILE_OPTION "/std:c17") |
| else() |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "") |
| |
| set(CMAKE_C17_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C17_EXTENSION_COMPILE_OPTION "") |
| endif() |
| endif() |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 2.1) |
| set(CMAKE_C90_STANDARD__HAS_FULL_SUPPORT ON) |
| set(CMAKE_C99_STANDARD__HAS_FULL_SUPPORT ON) |
| endif() |
| |
| if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 3.0) |
| set(CMAKE_C11_STANDARD__HAS_FULL_SUPPORT ON) |
| endif() |
| |
| __compiler_check_default_language_standard(C 2.1 99 3.5.2 11 11.0 17) |