1include(Compiler/Clang)
2__compiler_clang(CXX)
3
4set(CMAKE_CXX_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -x c++)
5
6if(NOT "x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
7  if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
8      AND CMAKE_GENERATOR MATCHES "Makefiles"
9      AND CMAKE_DEPFILE_FLAGS_CXX)
10    # dependencies are computed by the compiler itself
11    set(CMAKE_CXX_DEPFILE_FORMAT gcc)
12    set(CMAKE_CXX_DEPENDS_USE_COMPILER TRUE)
13  endif()
14
15  set(CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN "-fvisibility-inlines-hidden")
16endif()
17
18if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.0)
19  set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++98")
20  set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
21  set(CMAKE_CXX98_STANDARD__HAS_FULL_SUPPORT ON)
22
23  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
24  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
25endif()
26
27if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.1)
28  set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++14")
29  set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++14")
30  set(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT ON)
31elseif(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.1)
32  # AppleClang 5.0 knows this flag, but does not set a __cplusplus macro greater than 201103L
33  set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std=c++1y")
34  set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
35  set(CMAKE_CXX14_STANDARD__HAS_FULL_SUPPORT ON)
36endif()
37
38if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.0)
39  set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std=c++17")
40  set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++17")
41elseif (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.1)
42  set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std=c++1z")
43  set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std=gnu++1z")
44endif()
45
46if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)
47    set(CMAKE_CXX11_STANDARD__HAS_FULL_SUPPORT ON)
48endif()
49
50if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 10.0)
51  set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-std=c++2a")
52  set(CMAKE_CXX20_EXTENSION_COMPILE_OPTION "-std=gnu++2a")
53endif()
54
55__compiler_check_default_language_standard(CXX 4.0 98)
56