On Wed, Oct 28, 2015 at 11:20 AM, Robert Dailey
<rcdailey.li...@gmail.com> wrote:
> 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.
Actually, even after getting this working, I still get no color output. :-(
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