+#
+# This file is part of the GROMACS molecular simulation package.
+#
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+# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
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+
# - Define macro to check if MPI_IN_PLACE exists
#
# GMX_TEST_MPI_IN_PLACE(VARIABLE)
# VARIABLE will be set to true if MPI_IN_PLACE exists
#
+include(CheckCSourceCompiles)
MACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)
+ if(NOT DEFINED MPI_IN_PLACE_COMPILE_OK)
MESSAGE(STATUS "Checking for MPI_IN_PLACE")
- # First check without any special flags
- TRY_COMPILE(MPI_IN_PLACE_COMPILE_OK ${CMAKE_BINARY_DIR}
- "${CMAKE_SOURCE_DIR}/cmake/TestMPI_IN_PLACE.c"
- COMPILE_DEFINITIONS )
+
+ set(CMAKE_REQUIRED_DEFINITIONS ${MPI_COMPILE_FLAGS})
+ set(CMAKE_REQUIRED_INCLUDES ${MPI_INCLUDE_PATH})
+ set(CMAKE_REQUIRED_LIBRARIES ${MPI_LIBRARIES})
+ check_c_source_compiles(
+ "#include <mpi.h>
+int main(void) {
+ void* buf;
+ MPI_Allreduce(MPI_IN_PLACE, buf, 10, MPI_FLOAT, MPI_SUM, MPI_COMM_WORLD);
+}" MPI_IN_PLACE_COMPILE_OK)
if(MPI_IN_PLACE_COMPILE_OK)
- MESSAGE(STATUS "Checking for MPI_IN_PLACE - yes")
- set(${VARIABLE} ${MPI_IN_PLACE_COMPILE_OK}
- "Result of test for MPI_IN_PLACE")
- else(MPI_IN_PLACE_COMPILE_OK)
+ MESSAGE(STATUS "Checking for MPI_IN_PLACE - yes")
+ else()
MESSAGE(STATUS "Checking for MPI_IN_PLACE - no")
- endif(MPI_IN_PLACE_COMPILE_OK)
+ endif()
+ set(MPI_IN_PLACE_COMPILE_OK "${MPI_IN_PLACE_COMPILE_OK}" CACHE INTERNAL "Result of mpi_in_place check")
+ set(CMAKE_REQUIRED_DEFINITIONS)
+ set(CMAKE_REQUIRED_INCLUDES)
+ set(CMAKE_REQUIRED_LIBRARIES)
+ endif()
+ if (MPI_IN_PLACE_COMPILE_OK)
+ set(${VARIABLE} ${MPI_IN_PLACE_COMPILE_OK}
+ "Result of test for MPI_IN_PLACE")
+ endif()
ENDMACRO(GMX_TEST_MPI_IN_PLACE VARIABLE)