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Проверка доступности стандарта C++17

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This commit is contained in:
Andrei Astafev
2020-12-21 16:05:42 +03:00
parent 81bed8b385
commit a0cc72077c
1 changed files with 16 additions and 7 deletions
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15
CMLibCompilerFlags.cmake
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@@ -34,16 +34,25 @@ endif()
# Выбор стандарта по умолчанию (можно переопределить в проекте)
set(CMAKE_CXX_STANDARD_REQUIRED YES)
check_cxx_compiler_flag(-std=c++14 HAVE_FLAG_STD_CXX14)
if(HAVE_FLAG_STD_CXX14)
check_cxx_compiler_flag(-std=c++17 HAVE_FLAG_STD_CXX17)
if(HAVE_FLAG_STD_CXX17)
set(CMAKE_CXX_STANDARD 17)
check_cxx_compiler_flag(-std=gnu++17 HAVE_FLAG_STD_GNUXX17)
if(HAVE_FLAG_STD_GNUXX17)
set(CMAKE_CXX_EXTENSIONS YES)
endif()
else()
check_cxx_compiler_flag(-std=c++14 HAVE_FLAG_STD_CXX14)
if(HAVE_FLAG_STD_CXX14)
set(CMAKE_CXX_STANDARD 14)
check_cxx_compiler_flag(-std=gnu++14 HAVE_FLAG_STD_GNUXX14)
if(HAVE_FLAG_STD_GNUXX14)
set(CMAKE_CXX_EXTENSIONS YES)
endif()
else()
else()
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_EXTENSIONS YES)
endif()
endif()
# Common configuration for GCC, clang and Intel.