1include(Compiler/GNU)
2__compiler_gnu(C)
3
4
5if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
6    AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
7    AND CMAKE_DEPFILE_FLAGS_C)
8  # dependencies are computed by the compiler itself
9  set(CMAKE_C_DEPFILE_FORMAT gcc)
10  set(CMAKE_C_DEPENDS_USE_COMPILER TRUE)
11endif()
12
13set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c)
14
15if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.5)
16  set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c90")
17  set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu90")
18elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4)
19  set(CMAKE_C90_STANDARD_COMPILE_OPTION "-std=c89")
20  set(CMAKE_C90_EXTENSION_COMPILE_OPTION "-std=gnu89")
21endif()
22
23if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 3.4)
24  set(CMAKE_C90_STANDARD__HAS_FULL_SUPPORT ON)
25  set(CMAKE_C99_STANDARD_COMPILE_OPTION "-std=c99")
26  set(CMAKE_C99_EXTENSION_COMPILE_OPTION "-std=gnu99")
27  set(CMAKE_C99_STANDARD__HAS_FULL_SUPPORT ON)
28endif()
29
30if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.7)
31  set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c11")
32  set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu11")
33  set(CMAKE_C11_STANDARD__HAS_FULL_SUPPORT ON)
34elseif (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 4.6)
35  set(CMAKE_C11_STANDARD_COMPILE_OPTION "-std=c1x")
36  set(CMAKE_C11_EXTENSION_COMPILE_OPTION "-std=gnu1x")
37endif()
38
39if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 8.1)
40  set(CMAKE_C17_STANDARD_COMPILE_OPTION "-std=c17")
41  set(CMAKE_C17_EXTENSION_COMPILE_OPTION "-std=gnu17")
42endif()
43
44if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.1)
45  set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c2x")
46  set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
47endif()
48
49__compiler_check_default_language_standard(C 3.4 90 5.0 11 8.1 17)
50