| include(Compiler/Clang) |
| __compiler_clang(C) |
| |
| cmake_policy(GET CMP0025 appleClangPolicy) |
| if(APPLE AND NOT appleClangPolicy STREQUAL NEW) |
| return() |
| endif() |
| |
| if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC") |
| set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl") |
| endif() |
| |
| if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4) |
| if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC") |
| set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90") |
| set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90") |
| set(CMAKE_C90_STANDARD__HAS_FULL_SUPPORT ON) |
| |
| set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99") |
| set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99") |
| set(CMAKE_C99_STANDARD__HAS_FULL_SUPPORT ON) |
| |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11") |
| set(CMAKE_C11_STANDARD__HAS_FULL_SUPPORT ON) |
| else() |
| # clang-cl doesn't have any of these |
| set(CMAKE_C90_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C90_EXTENSION_COMPILE_OPTION "") |
| set(CMAKE_C90_STANDARD__HAS_FULL_SUPPORT ON) |
| |
| set(CMAKE_C99_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C99_EXTENSION_COMPILE_OPTION "") |
| set(CMAKE_C99_STANDARD__HAS_FULL_SUPPORT ON) |
| |
| set(CMAKE_C11_STANDARD_COMPILE_OPTION "") |
| set(CMAKE_C11_EXTENSION_COMPILE_OPTION "") |
| set(CMAKE_C11_STANDARD__HAS_FULL_SUPPORT ON) |
| endif() |
| endif() |
| |
| if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC") |
| __compiler_check_default_language_standard(C 3.4 99 3.6 11) |
| else() |
| set(CMAKE_C_STANDARD_DEFAULT "") |
| endif() |