[CMake] CHECK_INCLUDE_FILE_CXX with built from source compiler

[houssen]

OK, thanks !

Franck

Le 2017-03-16 15:37, Robert Maynard a écrit :
> 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 <houssen at 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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