1include(Compiler/Clang)
2__compiler_clang(C)
3
4
5if(NOT "x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
6  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
7      AND CMAKE_GENERATOR MATCHES "Makefiles"
8      AND CMAKE_DEPFILE_FLAGS_C)
9    # dependencies are computed by the compiler itself
10    set(CMAKE_C_DEPFILE_FORMAT gcc)
11    set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
12  endif()
13endif()
14
15set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c)
16
17if(NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.0)
18  set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
19  set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")
20  set(CMAKE_C90_STANDARD__HAS_FULL_SUPPORT ON)
21
22  set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99")
23  set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99")
24  set(CMAKE_C99_STANDARD__HAS_FULL_SUPPORT ON)
25
26  set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11")
27  set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
28  set(CMAKE_C11_STANDARD__HAS_FULL_SUPPORT ON)
29endif()
30
31if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 11.0)
32  set(CMAKE_C17_STANDARD_COMPILE_OPTION "-std=c17")
33  set(CMAKE_C17_EXTENSION_COMPILE_OPTION "-std=gnu17")
34endif()
35
36if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 11.0.3)
37  set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c2x")
38  set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
39endif()
40
41__compiler_check_default_language_standard(C 4.0 99 9.1 11 12.0.5 17)
42