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
