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include(Compiler/Clang)
__compiler_clang(OBJCXX)
if("x${CMAKE_OBJCXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
if(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 2.1)
set(CMAKE_OBJCXX98_STANDARD_COMPILE_OPTION "-std=c++98")
set(CMAKE_OBJCXX98_EXTENSION_COMPILE_OPTION "-std=gnu++98")
endif()
if(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 3.1)
set(CMAKE_OBJCXX98_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_OBJCXX11_STANDARD_COMPILE_OPTION "-std=c++11")
set(CMAKE_OBJCXX11_EXTENSION_COMPILE_OPTION "-std=gnu++11")
set(CMAKE_OBJCXX11_STANDARD__HAS_FULL_SUPPORT ON)
elseif(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 2.1)
set(CMAKE_OBJCXX11_STANDARD_COMPILE_OPTION "-std=c++0x")
set(CMAKE_OBJCXX11_EXTENSION_COMPILE_OPTION "-std=gnu++0x")
endif()
if(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 3.5)
set(CMAKE_OBJCXX14_STANDARD_COMPILE_OPTION "-std=c++14")
set(CMAKE_OBJCXX14_EXTENSION_COMPILE_OPTION "-std=gnu++14")
set(CMAKE_OBJCXX14_STANDARD__HAS_FULL_SUPPORT ON)
elseif(NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 3.4)
set(CMAKE_OBJCXX14_STANDARD_COMPILE_OPTION "-std=c++1y")
set(CMAKE_OBJCXX14_EXTENSION_COMPILE_OPTION "-std=gnu++1y")
set(CMAKE_OBJCXX14_STANDARD__HAS_FULL_SUPPORT ON)
endif()
set(_clang_version_std17 5.0)
if (NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS "${_clang_version_std17}")
set(CMAKE_OBJCXX17_STANDARD_COMPILE_OPTION "-std=c++17")
set(CMAKE_OBJCXX17_EXTENSION_COMPILE_OPTION "-std=gnu++17")
elseif (NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS 3.5)
set(CMAKE_OBJCXX17_STANDARD_COMPILE_OPTION "-std=c++1z")
set(CMAKE_OBJCXX17_EXTENSION_COMPILE_OPTION "-std=gnu++1z")
endif()
if (NOT CMAKE_OBJCXX_COMPILER_VERSION VERSION_LESS "${_clang_version_std17}")
set(CMAKE_OBJCXX20_STANDARD_COMPILE_OPTION "-std=c++2a")
set(CMAKE_OBJCXX20_EXTENSION_COMPILE_OPTION "-std=gnu++2a")
endif()
unset(_clang_version_std17)
__compiler_check_default_language_standard(OBJCXX 2.1 98)
elseif(CMAKE_OBJCXX_COMPILER_VERSION VERSION_GREATER_EQUAL 3.9
AND CMAKE_OBJCXX_SIMULATE_VERSION VERSION_GREATER_EQUAL 19.0)
# This version of clang-cl and the MSVC version it simulates have
# support for -std: flags.
set(CMAKE_OBJCXX98_STANDARD_COMPILE_OPTION "")
set(CMAKE_OBJCXX98_EXTENSION_COMPILE_OPTION "")
set(CMAKE_OBJCXX98_STANDARD__HAS_FULL_SUPPORT ON)
set(CMAKE_OBJCXX11_STANDARD_COMPILE_OPTION "")
set(CMAKE_OBJCXX11_EXTENSION_COMPILE_OPTION "")
set(CMAKE_OBJCXX14_STANDARD_COMPILE_OPTION "-std:c++14")
set(CMAKE_OBJCXX14_EXTENSION_COMPILE_OPTION "-std:c++14")
if (CMAKE_OBJCXX_COMPILER_VERSION VERSION_GREATER_EQUAL 6.0)
set(CMAKE_OBJCXX17_STANDARD_COMPILE_OPTION "-std:c++17")
set(CMAKE_OBJCXX17_EXTENSION_COMPILE_OPTION "-std:c++17")
set(CMAKE_OBJCXX20_STANDARD_COMPILE_OPTION "-std:c++latest")
set(CMAKE_OBJCXX20_EXTENSION_COMPILE_OPTION "-std:c++latest")
else()
set(CMAKE_OBJCXX17_STANDARD_COMPILE_OPTION "-std:c++latest")
set(CMAKE_OBJCXX17_EXTENSION_COMPILE_OPTION "-std:c++latest")
endif()
__compiler_check_default_language_standard(OBJCXX 3.9 14)
endif()