ENH: add new version of FindMPI, fix it to work with MPICH2 on windows
This commit is contained in:
Bill Hoffman
parent
845563d575
commit
29fe247016
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@ -1,43 +1,229 @@
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# - Find MPI
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# This module looks for the Message Passing Interface (MPI).
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# This module looks for MPI (Message Passing Interface) support
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#
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# it will define the following values
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# This module will set the following variables:
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# MPI_INCLUDE_PATH = where mpi.h can be found
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# MPI_FOUND TRUE if we have found MPI
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# MPI_LIBRARY = the library to link in (mpi mpich etc)
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# MPI_COMPILE_FLAGS Compilation flags for MPI programs
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# MPI_INCLUDE_PATH Include path for MPI header
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# MPI_LINK_FLAGS Linking flags for MPI programs
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# MPI_LIBRARIES Libraries to link MPI programs against
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# MPI_LIBRARY Deprecated; first MPI library to link against
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# MPI_EXTRA_LIBRARY Deprecated; second MPI library to link against
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# MPIEXEC Executable for running MPI programs
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#
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# This module will attempt to auto-detect these settings, first by
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# looking for a C++ MPI driver (e.g., mpic++, mpiCC, or mpicxx; set by
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# MPICXX) and later by checking common MPI paths and library names.
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FIND_PATH(MPI_INCLUDE_PATH NAMES mpi.h
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# Try to find the MPI driver program
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PATH_SUFFIXES mpi mpi/include
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find_program(MPICXX
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PATHS
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NAMES mpic++ mpicxx mpiCC
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"$ENV{ProgramFiles}/MPICH/SDK/Include"
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DOC "MPI C++ compiler. Used only to detect MPI compilation flags.")
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"$ENV{ProgramFiles}/MPICH2/include"
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mark_as_advanced(MPICXX)
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"C:/Program Files/MPICH/SDK/Include"
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)
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FIND_LIBRARY(MPI_LIBRARY
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find_program(MPIEXEC
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NAMES mpich2 mpi mpich mpich.rts
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NAMES mpiexec mpirun
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PATH_SUFFIXES mpi/lib
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DOC "Executable for running MPI programs.")
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PATHS
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mark_as_advanced(MPIEXEC)
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"$ENV{ProgramFiles}/MPICH/SDK/Lib"
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"$ENV{ProgramFiles}/MPICH2/Lib"
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"C:/Program Files/MPICH/SDK/Lib"
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)
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FIND_LIBRARY(MPI_EXTRA_LIBRARY
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if (NOT OLD_MPICXX STREQUAL MPICXX)
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NAMES mpi++
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set(MPI_FORCE_RECONFIGURE TRUE)
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PATH_SUFFIXES mpi/lib
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set(OLD_MPICXX ${MPICXX} CACHE INTERNAL "Previous value of MPICXX" FORCE)
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PATHS
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endif (NOT OLD_MPICXX STREQUAL MPICXX)
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"$ENV{ProgramFiles}/MPICH/SDK/Lib"
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"C:/Program Files/MPICH/SDK/Lib"
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if (NOT MPICXX)
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DOC "If a second mpi library is necessary, specify it here.")
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# If there is no MPI C++ compiler, we force ourselves to configure
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# MPI the old way.
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set(MPI_FORCE_RECONFIGURE TRUE)
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endif (NOT MPICXX)
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if (MPICXX)
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# Check whether the -showme:compile option works. This indicates
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# that we have either Open MPI or a newer version of LAM-MPI, and
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# implies that -showme:link will also work.
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exec_program(${MPICXX}
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ARGS -showme:compile
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
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RETURN_VALUE MPICXX_RETURN)
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if (MPICXX_RETURN EQUAL 0)
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# If we appear to have -showme:compile, then we should also have
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# -showme:link. Try it.
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exec_program(${MPICXX}
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ARGS -showme:link
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OUTPUT_VARIABLE MPI_LINK_CMDLINE
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RETURN_VALUE MPICXX_RETURN)
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endif (MPICXX_RETURN EQUAL 0)
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if (MPICXX_RETURN EQUAL 0)
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# Do nothing: we have our command lines now
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else (MPICXX_RETURN EQUAL 0)
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# Older versions of LAM-MPI have "-showme". Try it.
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exec_program(${MPICXX}
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ARGS -showme
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
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RETURN_VALUE MPICXX_RETURN)
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endif (MPICXX_RETURN EQUAL 0)
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if (MPICXX_RETURN EQUAL 0)
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# Do nothing: we have our command lines now
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else (MPICXX_RETURN EQUAL 0)
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# MPICH uses "-show". Try it.
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exec_program(${MPICXX}
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ARGS -show
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
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RETURN_VALUE MPICXX_RETURN)
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endif (MPICXX_RETURN EQUAL 0)
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if (MPICXX_RETURN EQUAL 0)
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# We have our command lines, but we might need to copy
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# MPI_COMPILE_CMDLINE into MPI_LINK_CMDLINE, if the underlying
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if (NOT MPI_LINK_CMDLINE)
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SET(MPI_LINK_CMDLINE ${MPI_COMPILE_CMDLINE})
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endif (NOT MPI_LINK_CMDLINE)
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else (MPICXX_RETURN EQUAL 0)
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message(STATUS "Unable to determine MPI from MPI driver ${MPICXX}")
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endif (MPICXX_RETURN EQUAL 0)
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endif (MPICXX)
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if (NOT MPI_FORCE_RECONFIGURE)
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# We don't actually have to reconfigure anything
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elseif (MPI_COMPILE_CMDLINE)
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# Extract compile flags from the compile command line.
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string(REGEX MATCHALL "-D([^\" ]+|\"[^\"]+\")" MPI_ALL_COMPILE_FLAGS ${MPI_COMPILE_CMDLINE})
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set(MPI_COMPILE_FLAGS_WORK)
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foreach(FLAG ${MPI_ALL_COMPILE_FLAGS})
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if (MPI_COMPILE_FLAGS_WORK)
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set(MPI_COMPILE_FLAGS_WORK "${MPI_COMPILE_FLAGS_WORK} ${FLAG}")
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else(MPI_COMPILE_FLAGS_WORK)
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set(MPI_COMPILE_FLAGS_WORK ${FLAG})
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endif(MPI_COMPILE_FLAGS_WORK)
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endforeach(FLAG)
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# Extract include paths from compile command line
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string(REGEX MATCH "-I([^\" ]+|\"[^\"]+\")" MPI_INCLUDE_PATH ${MPI_COMPILE_CMDLINE})
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string(REGEX REPLACE "^-I" "" MPI_INCLUDE_PATH ${MPI_INCLUDE_PATH})
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string(REGEX REPLACE "//" "/" MPI_INCLUDE_PATH ${MPI_INCLUDE_PATH})
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# Extract linker paths from the link command line
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string(REGEX MATCH "-L([^\" ]+|\"[^\"]+\")" MPI_LINK_PATH ${MPI_LINK_CMDLINE})
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string(REGEX REPLACE "^-L" "" MPI_LINK_PATH ${MPI_LINK_PATH})
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string(REGEX REPLACE "//" "/" MPI_LINK_PATH ${MPI_LINK_PATH})
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# Extract linker flags from the link command line
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string(REGEX MATCHALL "-Wl,([^\" ]+|\"[^\"]+\")" MPI_ALL_LINK_FLAGS ${MPI_LINK_CMDLINE})
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set(MPI_LINK_FLAGS_WORK)
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foreach(FLAG ${MPI_ALL_LINK_FLAGS})
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if (MPI_LINK_FLAGS_WORK)
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set(MPI_LINK_FLAGS_WORK "${MPI_LINK_FLAGS_WORK} ${FLAG}")
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else(MPI_LINK_FLAGS_WORK)
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set(MPI_LINK_FLAGS_WORK ${FLAG})
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endif(MPI_LINK_FLAGS_WORK)
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endforeach(FLAG)
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# Extract the set of libraries to link against from the link command
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# line
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string(REGEX MATCHALL "-l([^\" ]+|\"[^\"]+\")" MPI_LIBNAMES ${MPI_LINK_CMDLINE})
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# Determine full path names for all of the libraries that one needs
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# to link against in an MPI program
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set(MPI_LIBRARIES)
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foreach(LIB ${MPI_LIBNAMES})
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string(REGEX REPLACE "^-l" "" LIB ${LIB})
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set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
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find_library(MPI_LIB ${LIB} PATHS ${MPI_LINK_PATH})
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if (MPI_LIB)
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list(APPEND MPI_LIBRARIES ${MPI_LIB})
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else (MPI_LIB)
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status(ERROR "Unable to find MPI library ${LIB}")
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endif (MPI_LIB)
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endforeach(LIB)
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set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE INTERNAL "Scratch variable for MPI detection" FORCE)
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# Chop MPI_LIBRARIES into the old-style MPI_LIBRARY and
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# MPI_EXTRA_LIBRARY.
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list(LENGTH MPI_LIBRARIES MPI_NUMLIBS)
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if (MPI_NUMLIBS GREATER 0)
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list(GET MPI_LIBRARIES 0 MPI_LIBRARY)
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else (MPI_NUMLIBS GREATER 0)
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set(MPI_LIBRARY "MPI_LIBRARY-NOTFOUND")
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endif (MPI_NUMLIBS GREATER 0)
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if (MPI_NUMLIBS GREATER 1)
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cdr(MPI_EXTRA_LIBRARY ${MPI_LIBRARIES})
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else (MPI_NUMLIBS GREATER 1)
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set(MPI_EXTRA_LIBRARY "MPI_EXTRA_LIBRARY-NOTFOUND")
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endif (MPI_NUMLIBS GREATER 1)
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# Set up all of the appropriate cache entries
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set(MPI_FOUND TRUE CACHE INTERNAL "Whether MPI was found" FORCE)
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if (NOT MPI_FORCE_RECONFIGURE)
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set(MPI_COMPILE_FLAGS ${MPI_COMPILE_FLAGS_WORK} CACHE STRING "MPI compilation flags")
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set(MPI_INCLUDE_PATH ${MPI_INCLUDE_PATH} CACHE STRING "MPI include path")
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set(MPI_LINK_FLAGS ${MPI_LINK_FLAGS_WORK} CACHE STRING "MPI linking flags")
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set(MPI_LIBRARIES ${MPI_LIBRARIES} CACHE STRING "MPI libraries to link against, separated by semicolons")
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else (NOT MPI_FORCE_RECONFIGURE)
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set(MPI_COMPILE_FLAGS ${MPI_COMPILE_FLAGS_WORK} CACHE STRING "MPI compilation flags" FORCE)
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set(MPI_INCLUDE_PATH ${MPI_INCLUDE_PATH} CACHE STRING "MPI include path" FORCE)
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set(MPI_LINK_FLAGS ${MPI_LINK_FLAGS_WORK} CACHE STRING "MPI linking flags" FORCE)
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set(MPI_LIBRARIES ${MPI_LIBRARIES} CACHE STRING "MPI libraries to link against, separated by semicolons" FORCE)
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endif (NOT MPI_FORCE_RECONFIGURE)
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else (MPI_COMPILE_CMDLINE)
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find_path(MPI_INCLUDE_PATH mpi.h
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/usr/local/include
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/usr/include
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/usr/include/mpi
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/usr/local/mpi/include
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"C:/Program Files/MPICH/SDK/Include"
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"$ENV{SystemDrive}/Program Files/MPICH2/include"
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"C:/Program Files/Microsoft Compute Cluster Pack/Include"
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)
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# TODO: How do we know whether we're building 32-bit vs. 64-bit?
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find_library(MPI_LIBRARY
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NAMES mpi mpich
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PATHS /usr/lib /usr/local/lib /usr/local/mpi/lib
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"C:/Program Files/MPICH/SDK/Lib"
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"$ENV{SystemDrive}/Program Files/MPICH/SDK/Lib"
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"C:/Program Files/Microsoft Compute Cluster Pack/Lib/i386"
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)
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find_library(MPI_LIBRARY
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NAMES mpich2
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PATHS
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"$ENV{SystemDrive}/Program Files/MPICH2/Lib")
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find_library(MPI_EXTRA_LIBRARY
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NAMES mpi++
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PATHS /usr/lib /usr/local/lib /usr/local/mpi/lib
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"C:/Program Files/MPICH/SDK/Lib"
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"C:/Program Files/Microsoft Compute Cluster Pack/Lib/i386"
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DOC "If a second MPI library is necessary, specify it here.")
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set(MPI_COMPILE_FLAGS "" CACHE STRING "MPI compilation flags")
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set(MPI_LINK_FLAGS "" CACHE STRING "MPI linking flags")
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if (MPI_EXTRA_LIBRARY)
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set(MPI_LIBRARIES "${MPI_LIBRARY};${MPI_EXTRA_LIBRARY}" CACHE STRING "MPI libraries to link against, separated by semicolons")
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else (MPI_EXTRA_LIBRARY)
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set(MPI_LIBRARIES ${MPI_LIBRARY} CACHE STRING "MPI libraries to link against, separated by semicolons")
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endif (MPI_EXTRA_LIBRARY)
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if (MPI_LIBRARY)
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set(MPI_FOUND TRUE CACHE INTERNAL "Whether MPI was found" FORCE)
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else (MPI_LIBRARY)
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set(MPI_FOUND FALSE CACHE INTERNAL "Whether MPI was found" FORCE)
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endif (MPI_LIBRARY)
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endif (NOT MPI_FORCE_RECONFIGURE)
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# on BlueGene/L the MPI lib is named libmpich.rts.a, there also these additional libs are required
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# on BlueGene/L the MPI lib is named libmpich.rts.a, there also these additional libs are required
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IF("${MPI_LIBRARY}" MATCHES "mpich.rts")
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if("${MPI_LIBRARY}" MATCHES "mpich.rts")
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SET(MPI_EXTRA_LIBRARY msglayer.rts devices.rts rts.rts devices.rts CACHE STRING "Additional MPI libs" FORCE)
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set(MPI_EXTRA_LIBRARY ${MPI_EXTRA_LIBRARY} msglayer.rts devices.rts rts.rts devices.rts)
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ENDIF("${MPI_LIBRARY}" MATCHES "mpich.rts")
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set(MPI_LIBRARY ${MPI_LIBRARY} msglayer.rts devices.rts rts.rts devices.rts)
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endif("${MPI_LIBRARY}" MATCHES "mpich.rts")
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INCLUDE(FindPackageHandleStandardArgs)
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set(MPI_LIBRARY ${MPI_LIBRARY} CACHE INTERNAL "MPI library to link against. Deprecated: use MPI_LIBRARIES instead")
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set(MPI_EXTRA_LIBRARY ${MPI_EXTRA_LIBRARY} CACHE INTERNAL "Second MPI library to link against. Deprecated: use MPI_LIBRARIES instead")
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# handle the QUIETLY and REQUIRED arguments and set LIBXML2_FOUND to TRUE if
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include(FindPackageHandleStandardArgs)
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# all listed variables are TRUE
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# handle the QUIETLY and REQUIRED arguments
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(MPI DEFAULT_MSG MPI_LIBRARY MPI_INCLUDE_PATH)
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find_package_handle_standard_args(MPI DEFAULT_MSG MPI_LIBRARY MPI_INCLUDE_PATH)
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mark_as_advanced(MPI_INCLUDE_PATH MPI_COMPILE_FLAGS MPI_LINK_FLAGS MPI_LIBRARIES)
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MARK_AS_ADVANCED(MPI_INCLUDE_PATH MPI_LIBRARY MPI_EXTRA_LIBRARY)
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