Well, the MPI_COMPILER variable is certainly used internally by FindMPI to detect all the stuff. And to use MPI_LINK_FLAGS, just set them as the target property LINK_FLAGS.
Michael On 26. May, 2010, at 18:15 , Marcel Loose wrote: > True, but that raises (at least) two questions: > > 1) What's the use of the variable MPI_COMPILER if it cannot be used to > set the C/C++ compiler. > > 2) I know how to handle MPI_COMPILE_FLAGS - use add_definitions(); > MPI_INCLUDE_PATH - use include_directories(); MPI_LIBRARIES - use > target_link_libraries(). But how do I handle MPI_LINK_FLAGS? > > Regards, > Marcel Loose. > > On Wed, 2010-05-26 at 17:38 +0200, Michael Wild wrote: >> On 26. May, 2010, at 17:20 , Marcel Loose wrote: >> >>> Hi all, >>> >>> I was wondering how one should use find_package(MPI) to properly set > the >>> C/C++ compiler(s). Normally, you call find_package() after the > project() >>> command. However, by that time the CMAKE_<LANG>_COMPILER cache > variables >>> have already been set. Should one FORCE these cache variables to the >>> value of MPI_COMPILER? >>> >>> I vaguely remember that setting CMAKE_<LANG>_COMPILER after the >>> project() statement was a definite no-no, because all kinds of > tests, >>> executed by the project() command, are done with the default C/C++ >>> compilers. >>> >>> Best regards, >>> Marcel Loose. >> >> >> Usually mpiCC and cohorts are just wrapper scripts which add > appropriate include directories and libraries to the command line. If I > remember correctly, FindMPI.cmake detects those and provides them via > MPI_COMPILE_FLAGS, MPI_INCLUDE_PATH, MPI_LINK_FLAGS and MPI_LIBRARIES. > So, you actually don't need to set the compiler to one of the MPI > compiler wrappers. >> >> Michael > > _______________________________________________ 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
