You need to set these compiler flags BEFORE the project() call to let CMake
detect all stuff properly. There is a CMake variable telling you the size of a
void*.
Am 29. Oktober 2016 12:22:07 MESZ, schrieb cen <imba...@gmail.com>:
>Hi
>
>Once I switch to 32bit builds, CMake fails to recognise that
>glibc-devel.i686 is not installed resulting in an error when running
>make.
>In the same way, my own FindGMP fails to recognize that gmp-devel.i686
>is not installed. I need CMake to fail if these things are missing.
>At least for the compiler part, I'm pretty sure I am missing some var
>or
>flag to tell CMake I expect a 32 bit build.
>
>This is what I use to switch between builds in CMakeLists.txt (ARCH var
>
>is irrelevant here, I use it later on for CPack):
>
>if (BUILD_32)
> set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS
>"-m32" LINK_FLAGS "-m32")
> MESSAGE(STATUS "Excluding 64bit library paths from search.")
> set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS OFF)
> set(ARCH i686)
>elseif (BUILD_64)
> set_target_properties(${PROJECT_NAME} PROPERTIES COMPILE_FLAGS
>"-m64" LINK_FLAGS "-m64")
> set(ARCH amd64)
>else()
> set(ARCH amd64)
>endif()
>
>
>For the FindGMP module, I am not really sure what the best practice
>is.Does the BUILD_32 and BUILD_64 flag propagate into the FindGMP? Do I
>
>explicitly specify paths for 32bit libs (eg: /usr/lib64) or can cmake
>be smarter than this?
--
Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.
--
Powered by www.kitware.com
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Kitware offers various services to support the CMake community. For more
information on each offering, please visit:
CMake Support: http://cmake.org/cmake/help/support.html
CMake Consulting: http://cmake.org/cmake/help/consulting.html
CMake Training Courses: http://cmake.org/cmake/help/training.html
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/cmake
