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use C++17 if available when configuring with cmake

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R4SAS 2020-02-28 23:05:26 +03:00 committed by GitHub
parent e0cb26bd9e
commit ed574f9d79
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1 changed files with 7 additions and 7 deletions
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14
build/CMakeLists.txt
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@ -184,16 +184,16 @@ else()
set( CMAKE_EXE_LINKER_FLAGS_MINSIZEREL "-Wl,--gc-sections" ) # -flto is added from above
endif ()
# check for c++11 support
# check for c++17 & c++11 support
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++17" CXX17_SUPPORTED)
CHECK_CXX_COMPILER_FLAG("-std=c++11" CXX11_SUPPORTED)
CHECK_CXX_COMPILER_FLAG("-std=c++0x" CXX0X_SUPPORTED)
if (CXX11_SUPPORTED)
if (CXX17_SUPPORTED)
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17" )
elseif (CXX11_SUPPORTED)
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11" )
elseif (CXX0X_SUPPORTED) # gcc 4.6
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x" )
elseif (NOT MSVC)
message(SEND_ERROR "C++11 standard not seems to be supported by compiler. Too old version?")
else
message(SEND_ERROR "C++17 nor C++11 standard not seems to be supported by compiler. Too old version?")
endif ()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")