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Demonstrate that compiler is identified as MSVC when VS2014 Clang extension is used

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This commit is contained in:
Gabriel Hare 2016-12-14 23:11:20 -08:00
parent 478b6545b2
commit 9eba823269
1 changed files with 4 additions and 0 deletions
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4
CMakeLists.txt
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@ -11,15 +11,19 @@ option(UTPP_AMPLIFY_WARNINGS
"Set this to OFF if you wish to use CMake default warning levels; should generally only use to work around support issues for your specific compiler"
ON)
message(STATUS "CMAKE_CXX_COMPILER_ID = ${CMAKE_CXX_COMPILER_ID}")
if(MSVC14 OR MSVC12)
message(STATUS "Using MSVC compiler")
# has the support we need
else()
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("-std=c++14" COMPILER_SUPPORTS_CXX14)
CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
if(COMPILER_SUPPORTS_CXX14)
message(STATUS "Specify C++14")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
elseif(COMPILER_SUPPORTS_CXX11)
message(STATUS "Specify C++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
else()
message(STATUS "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")