[CMake] issue with target_link_libraries and MSVC

[Benjamin Ballet]

I'v found a way to enable openmp for a few target only with
target_link_libraries :
I created an imported interface OpenMP and setted the property
INTERFACE_COMPILE_OPTIONS

2016-04-13 12:16 GMT+02:00 Matějů Miroslav, Ing. <Mateju.Miroslav at azd.cz>:

> The page I linked says /openmp is a compiler flag (not linker flag), so
> adding it to CMAKE_CXX_FLAGS instead of LINK_FLAGS makes perfect sense.
>
>
>
> Miroslav
>
>
>
> *From:* Benjamin Ballet [mailto:bballet at ivsweb.com]
> *Sent:* Wednesday, April 13, 2016 11:28 AM
> *To:* Matějů Miroslav, Ing.
> *Cc:* cmake at cmake.org
> *Subject:* Re: [CMake] issue with target_link_libraries and MSVC
>
>
>
> Ho yes, my bad, however there is still the same issue with forward slashes
>
>
>
> I receive the flag with FindOpenMP module. It's sad we can't do :
>
> target_link_libraries(... ${OpenMP_CXX_FLAGS}) for a few target
>
>
>
> In the end I add the flags for the whole project :
>
> set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
>
>
>
> 2016-04-13 7:54 GMT+02:00 Matějů Miroslav, Ing. <Mateju.Miroslav at azd.cz>:
>
> Hi Benjamin,
>
>
>
> MSVC flags start with “forward” slashes: / (However, MSVC also accepts
> hyphens (-) in my experience.)
>
> Documentation for /openmp flag:
> https://msdn.microsoft.com/library/fw509c3b.aspx
>
>
>
> Best regards,
>
> Miroslav
>
>
>
> *From:* CMake [mailto:cmake-bounces at cmake.org] *On Behalf Of *Benjamin
> Ballet via CMake
> *Sent:* Tuesday, April 12, 2016 5:30 PM
> *To:* cmake at cmake.org
> *Subject:* [CMake] issue with target_link_libraries and MSVC
>
>
>
> I'm trying to add the openmp flag to a target with target_link_libraries.
>
> \openmp is interpreted as a file name and visual try to link to \openmp.obj
>
>
>
> The documentation state that target_link_libraries see an item as a flag
> if it start with - but MSVC flags start with \
>
>
>
> Is there a way to add a link flags to a target with target_link_libraries
> and MSVC ?
>
>
>
> Thank you all
>
>
>
> --
>
> *Benjamin BALLET*
> Ingénieur R&D
>
>
> *ACTIVISU*
>
> 19, rue Klock - 92110 Clichy
>
> *> Standard Tél* :  01 44 69 37 37
>
> *>* www.activisu.com
>
>
>
>
>
> --
>
> *Benjamin BALLET*
> Ingénieur R&D
>
>
> *ACTIVISU*
>
> 19, rue Klock - 92110 Clichy
>
> *> Standard Tél* :  01 44 69 37 37
>
> *>* www.activisu.com
>



-- 
*Benjamin BALLET*
Ingénieur R&D

*ACTIVISU*
19, rue Klock - 92110 Clichy
*> Standard Tél* :  01 44 69 37 37
*>* www.activisu.com
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