I think this could work, but if compiler is altered before project() call (but I didn't check this and suggest set variable only if it's not already set). Specifying only one variable in command line looks more user-friendly and robust than several ones. Anther option is using initial cache.
Regards, Yuri On Wed, Feb 8, 2012 at 12:59 AM, Alexander Neundorf <[email protected] > wrote: > Hi Janitor, > > On Tuesday 07 February 2012, janitor 048 wrote: > > Hello, > > > > this is a question I recently asked on stackoverflow ( > > > http://stackoverflow.com/questions/9129233/recommended-ways-to-use-cmake-wi > > th-icc-via-configuration-options) but that has not received any response > > since then. Maybe this mailing list is a better place to ask... Here goes > > > > I would like to use the Intel compiler icc (or icpc) with a CMake-based > > project (on Linux for what it's worth). I can of course export the CXX > > variable when calling cmake, e.g. like > > > > CXX=icpc cmake ../ > > > > and this works fine. I would however like to make this choice available > via > > a custom option. For this I parse custom option, e.g. > > > > cmake -DMY_COMPILER_OPTION=Intel .. > > > > as > > > > IF (MY_COMPILER_OPTION STREQUAL "Intel") > > MESSAGE(STATUS "** Compiling with Intel settings **") > > SET(CMAKE_CXX_COMPILER "icpc") > > SET(CMAKE_CXX_FLAGS_RELEASE "-O3 -w") > > SET(CMAKE_CXX_FLAGS_DEBUG "-g") > > ENDIF () > > Don't do that, this is too late in the initialization process. > The recommended way is to set the CXX environment variable. This is only > necessary during the initial cmake run, afterwards this is stored in the > cmake > cmake cache. > It should also work to preset the compiler variables: > cmake -DCMAKE_C_COMPILER=icc -DCMAKE_CXX_COMPILER=icpc .... > > (I didn't check, but it should work). > > Alex > -- > > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the CMake FAQ at: > http://www.cmake.org/Wiki/CMake_FAQ > > Follow this link to subscribe/unsubscribe: > http://www.cmake.org/mailman/listinfo/cmake >
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