[CMake] issue with target_link_libraries and MSVC

[Matějů Miroslav, Ing.]

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<mailto: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<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<mailto: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<http://www.activisu.com/>


--
Benjamin BALLET
Ingénieur R&D

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