diff options
Diffstat (limited to 'Modules/Compiler/MSVC-CXX.cmake')
| -rw-r--r-- | Modules/Compiler/MSVC-CXX.cmake | 47 |
1 files changed, 46 insertions, 1 deletions
diff --git a/Modules/Compiler/MSVC-CXX.cmake b/Modules/Compiler/MSVC-CXX.cmake index 9371301d7..789fff53b 100644 --- a/Modules/Compiler/MSVC-CXX.cmake +++ b/Modules/Compiler/MSVC-CXX.cmake @@ -3,7 +3,38 @@ include(Compiler/CMakeCommonCompilerMacros) -if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0) +if ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.0.24215.1 AND + CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.10) OR + CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.10.25017) + + # VS 2015 Update 3 and above support language standard level flags, + # with the default and minimum level being C++14. + set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "") + set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "") + set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "") + set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "") + set(CMAKE_CXX14_STANDARD_COMPILE_OPTION "-std:c++14") + set(CMAKE_CXX14_EXTENSION_COMPILE_OPTION "-std:c++14") + if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.11.25505) + set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std:c++17") + set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std:c++17") + else() + set(CMAKE_CXX17_STANDARD_COMPILE_OPTION "-std:c++latest") + set(CMAKE_CXX17_EXTENSION_COMPILE_OPTION "-std:c++latest") + endif() + + __compiler_check_default_language_standard(CXX 19.0 14) + + # All features that we define are available in the base mode, except + # for meta-features for C++14 and above. Override the default macro + # to avoid doing unnecessary work. + macro(cmake_record_cxx_compile_features) + list(APPEND CMAKE_CXX17_COMPILE_FEATURES cxx_std_17) + list(APPEND CMAKE_CXX14_COMPILE_FEATURES cxx_std_14) + list(APPEND CMAKE_CXX98_COMPILE_FEATURES cxx_std_11) # no flag needed for 11 + _record_compiler_features_cxx(98) + endmacro() +elseif (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0) # MSVC has no specific options to set language standards, but set them as # empty strings anyways so the feature test infrastructure can at least check # to see if they are defined. @@ -18,4 +49,18 @@ if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 16.0) # There is no meaningful default for this set(CMAKE_CXX_STANDARD_DEFAULT "") + + # There are no compiler modes so we only need to test features once. + # Override the default macro for this special case. Pretend that + # all language standards are available so that at least compilation + # can be attempted. + macro(cmake_record_cxx_compile_features) + list(APPEND CMAKE_CXX_COMPILE_FEATURES + cxx_std_98 + cxx_std_11 + cxx_std_14 + cxx_std_17 + ) + _record_compiler_features(CXX "" CMAKE_CXX_COMPILE_FEATURES) + endmacro() endif() |