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On newer cmake versions which support it, use more portable way to set c++ standard version

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This commit is contained in:
Sebastian Messmer 2016-03-04 00:33:10 +01:00
parent 61611d03b2
commit c2c2a6f1dc
1 changed files with 19 additions and 14 deletions
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21
utils.cmake
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@ -6,20 +6,25 @@ include(CheckCXXCompilerFlag)
# Uses: target_activate_cpp14(buildtarget) # Uses: target_activate_cpp14(buildtarget)
################################################### ###################################################
function(target_activate_cpp14 TARGET) function(target_activate_cpp14 TARGET)
if("${CMAKE_VERSION}" VERSION_GREATER "3.1")
set_property(TARGET ${TARGET} PROPERTY CXX_STANDARD 14)
set_property(TARGET ${TARGET} PROPERTY CXX_STANDARD_REQUIRED ON)
else("${CMAKE_VERSION}" VERSION_GREATER "3.1")
check_cxx_compiler_flag("-std=c++14" COMPILER_HAS_CPP14_SUPPORT) check_cxx_compiler_flag("-std=c++14" COMPILER_HAS_CPP14_SUPPORT)
IF (COMPILER_HAS_CPP14_SUPPORT) if (COMPILER_HAS_CPP14_SUPPORT)
target_compile_options(${TARGET} PUBLIC -std=c++14) target_compile_options(${TARGET} PUBLIC -std=c++14)
ELSE() else(COMPILER_HAS_CPP14_SUPPORT)
check_cxx_compiler_flag("-std=c++1y" COMPILER_HAS_CPP14_PARTIAL_SUPPORT) check_cxx_compiler_flag("-std=c++1y" COMPILER_HAS_CPP14_PARTIAL_SUPPORT)
IF (COMPILER_HAS_CPP14_PARTIAL_SUPPORT) if (COMPILER_HAS_CPP14_PARTIAL_SUPPORT)
target_compile_options(${TARGET} PUBLIC -std=c++1y) target_compile_options(${TARGET} PUBLIC -std=c++1y)
ELSE() else()
message(FATAL_ERROR "Compiler doesn't support C++14") message(FATAL_ERROR "Compiler doesn't support C++14")
ENDIF() endif()
ENDIF() endif(COMPILER_HAS_CPP14_SUPPORT)
IF(CMAKE_CXX_COMPILER_ID MATCHES "Clang") if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
target_compile_options(${TARGET} PUBLIC -stdlib=libc++) target_compile_options(${TARGET} PUBLIC -stdlib=libc++)
ENDIF() endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
endif("${CMAKE_VERSION}" VERSION_GREATER "3.1")
endfunction(target_activate_cpp14) endfunction(target_activate_cpp14)
################################################# #################################################