On Wed, Oct 28, 2015 at 9:03 AM, Miller Henry <millerhe...@johndeere.com> wrote:
>
> I do something like this, which works for clang and should work for gcc 4.9
> though I haven't tested it. I haven't wrote the right way to do this which
> is to check if the terminal supports color before passing the flag in. I
> don't know what will happen on our e.g. CI system which doesn't support color.
>
> macro(AddCXXFlagIfSupported flag test)
> CHECK_CXX_COMPILER_FLAG(${flag} ${test})
> if( ${${test}} )
> message("adding ${flag}")
> set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
> endif()
> endmacro()
>
> if("Ninja" STREQUAL ${CMAKE_GENERATOR})
> AddCXXFlagIfSupported(-fcolor-diagnostics
> COMPILER_SUPPORTS_fcolor-diagnostics)
> endif()
>
> P.s. AddCXXFlagIfSupported ought to be in the default cmake distribution
> along with a lot or similar things
Unfortunately your solution doesn't seem to work. I get the following output:
[1/1] Re-running CMake...
-- Performing Test COMPILER_SUPPORTS_fcolor-diagnostics
-- Performing Test COMPILER_SUPPORTS_fcolor-diagnostics - Failed
GCC 4.9 supports this I thought?
--
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