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26 lines
1.1 KiB
CMake
26 lines
1.1 KiB
CMake
cmake_minimum_required(VERSION 2.8)
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function(RequireCXX14)
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message(STATUS "Checking compiler flags for C++14 support.")
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# Set C++14 support flags for various compilers
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include(CheckCXXCompilerFlag)
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check_cxx_compiler_flag("-std=c++14" COMPILER_SUPPORTS_CXX14)
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check_cxx_compiler_flag("-std=c++1y" COMPILER_SUPPORTS_CXX1Y)
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if(COMPILER_SUPPORTS_CXX14)
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message(STATUS "C++14 is supported.")
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if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14 -stdlib=libc++" PARENT_SCOPE)
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else()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14" PARENT_SCOPE)
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endif()
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elseif(COMPILER_SUPPORTS_CXX1Y)
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message(STATUS "C++1y is supported.")
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if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y -stdlib=libc++" PARENT_SCOPE)
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else()
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++1y" PARENT_SCOPE)
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endif()
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else()
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message(ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++14 support. Please use a different C++ compiler.")
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endif()
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endfunction()
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