On Wed, Oct 28, 2015 at 11:19 AM, Robert Dailey
<rcdailey.li...@gmail.com> wrote:
> 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?
I found the issue, the flag is diagnostics-color, not color-diagnostics.
--
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