This is a known issue that will be resolved in CMake 3.8 (
https://cmake.org/cmake/help/v3.8/policy/CMP0067.html#policy:CMP0067 )
On Wed, Mar 15, 2017 at 5:12 AM, houssen <hous...@ipgp.fr> wrote:
> For the record, the solution is (try_compile needs this option):
> SET(CMAKE_REQUIRED_FLAGS "-std=c++11")
>
> Is there a way to get this flag whatever the compiler to do this ?
> [SET_TARGET_PROPERTIES(myTarget PROPERTIES CXX_STANDARD 11) seems to be
> relevant only for target - flags are not available]
>
> Franck
>
>
> Le 2017-03-13 19:36, houssen a écrit :
>>
>> Forgot to mention:
>>
>> ~> cmake --version
>> cmake version 3.5.0
>>
>>
>> Le 2017-03-13 19:33, houssen a écrit :
>>>
>>> Hello,
>>>
>>> I do NOT use /usr/bin/g++ that is installed in the system (long story
>>> - don't ask why).
>>> I compiled gcc from source and installed it in /my/path/local/bin/g++.
>>>
>>> Now I need to check for tuple with CHECK_INCLUDE_FILE_CXX : it fails !
>>>
>>> Still failing if:
>>> 1. I export CPLUS_INCLUDE_PATH to point at
>>> /my/path/local/include/c++/x.y.z (I checked: tuple is here)
>>> 2. set this before calling CHECK_INCLUDE_FILE_CXX :
>>> SET ( CMAKE_REQUIRED_FLAGS "-I$ENV{CPLUS_INCLUDE_PATH}" )
>>> SET ( CMAKE_REQUIRED_INCLUDES "$ENV{CPLUS_INCLUDE_PATH}" )
>>>
>>> What is wrong ?
>>>
>>> Franck
>>
>>
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