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35 # - Define macro to check if MPI_IN_PLACE exists
37 # GMX_TEST_MPI_IN_PLACE(VARIABLE)
39 # VARIABLE will be set to true if MPI_IN_PLACE exists
42 include(CheckCSourceCompiles)
43 MACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)
44 if(NOT DEFINED MPI_IN_PLACE_COMPILE_OK)
45 MESSAGE(STATUS "Checking for MPI_IN_PLACE")
47 set(CMAKE_REQUIRED_FLAGS ${MPI_COMPILE_FLAGS})
48 set(CMAKE_REQUIRED_INCLUDES ${MPI_INCLUDE_PATH})
49 set(CMAKE_REQUIRED_LIBRARIES ${MPI_LIBRARIES})
50 check_c_source_compiles(
54 MPI_Allreduce(MPI_IN_PLACE, buf, 10, MPI_FLOAT, MPI_SUM, MPI_COMM_WORLD);
55 }" MPI_IN_PLACE_COMPILE_OK)
57 if(MPI_IN_PLACE_COMPILE_OK)
58 MESSAGE(STATUS "Checking for MPI_IN_PLACE - yes")
60 MESSAGE(STATUS "Checking for MPI_IN_PLACE - no")
62 set(MPI_IN_PLACE_COMPILE_OK "${MPI_IN_PLACE_COMPILE_OK}" CACHE INTERNAL "Result of mpi_in_place check")
63 set(CMAKE_REQUIRED_FLAGS)
64 set(CMAKE_REQUIRED_INCLUDES)
65 set(CMAKE_REQUIRED_LIBRARIES)
67 if (MPI_IN_PLACE_COMPILE_OK)
68 set(${VARIABLE} ${MPI_IN_PLACE_COMPILE_OK}
69 "Result of test for MPI_IN_PLACE")
71 ENDMACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)