FindMPI: Handle multiple languages
Adds support for: - MPI_<lang>_COMPILER and other useful variables for C, CXX, Fortran - Better compiler interrogation (handles mvapich) - Supports specifying an MPI compiler name directly on the command line without and absolute path, e.g.: cmake -D MPI_CXX_COMPILER=mpixlC - Better compiler name searching tries to match MPI compiler to regular CMAKE_<lang>_COMPILER_ID, if it's available. Gets rid of: - MPI_LIBRARY, MPI_EXTRA_LIBRARY cache variables. These and other old vars are still exported for backward compatibility, but they're not cached.
This commit is contained in:
Todd Gamblin
Brad King
parent
0554e5e50f
commit
706b73e848
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@ -1,59 +1,78 @@
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# - Message Passing Interface (MPI) module.
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#
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#=============================================================================
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# The Message Passing Interface (MPI) is a library used to write
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# high-performance parallel applications that use message passing, and
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# high-performance distributed-memory parallel applications, and
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# is typically deployed on a cluster. MPI is a standard interface
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# (defined by the MPI forum) for which many implementations are
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# available. All of these implementations have somewhat different
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# compilation approaches (different include paths, libraries to link
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# against, etc.), and this module tries to smooth out those differences.
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# available. All of them have somewhat different include paths,
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# libraries to link against, etc., and this module tries to smooth
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# out those differences.
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#
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#=== Variables ===============================================================
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# This module will set the following variables per language in your project,
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# where <lang> is one of C, CXX, or Fortran:
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#
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# MPI_<lang>_FOUND TRUE if FindMPI found MPI flags for <lang>
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# MPI_<lang>_COMPILER MPI Compiler wrapper for <lang>
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# MPI_<lang>_COMPILE_FLAGS Compilation flags for MPI programs
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# MPI_<lang>_INCLUDE_PATH Include path(s) for MPI header
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# MPI_<lang>_LINK_FLAGS Linking flags for MPI programs
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# MPI_<lang>_LIBRARIES All libraries to link MPI programs against
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#
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# Additionally, FindMPI sets the following variables for running MPI
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# programs from the command line:
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#
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# This module will set the following variables:
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# MPI_FOUND TRUE if we have found MPI
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# MPI_COMPILE_FLAGS Compilation flags for MPI programs
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# MPI_INCLUDE_PATH Include path(s) for MPI header
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# MPI_LINK_FLAGS Linking flags for MPI programs
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# MPI_LIBRARY First MPI library to link against (cached)
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# MPI_EXTRA_LIBRARY Extra MPI libraries to link against (cached)
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# MPI_LIBRARIES All libraries to link MPI programs against
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# MPIEXEC Executable for running MPI programs
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# MPIEXEC_NUMPROC_FLAG Flag to pass to MPIEXEC before giving it the
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# number of processors to run on
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# MPIEXEC_PREFLAGS Flags to pass to MPIEXEC directly before the
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# executable to run.
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# MPIEXEC_POSTFLAGS Flags to pass to MPIEXEC after all other flags.
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# MPIEXEC_POSTFLAGS Flags to pass to MPIEXEC after other flags.
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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 MPI compiler, which many MPI implementations provide
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# as a pass-through to the native compiler to simplify the compilation
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# of MPI programs. The MPI compiler is stored in the cache variable
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# MPI_COMPILER, and will attempt to look for commonly-named drivers
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# mpic++, mpicxx, mpiCC, or mpicc. If the compiler driver is found and
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# recognized, it will be used to set all of the module variables. To
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# skip this auto-detection, set MPI_LIBRARY and MPI_INCLUDE_PATH in
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# the CMake cache.
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#=== Usage ===================================================================
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# To use this module, simply call FindMPI from a CMakeLists.txt file, or
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# run find_package(MPI), then run CMake. If you are happy with the auto-
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# detected configuration for your language, then you're done. If not, you
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# have two options:
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#
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# If no compiler driver is found or the compiler driver is not
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# recognized, this module will then search for common include paths
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# and library names to try to detect MPI.
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# 1. Set MPI_<lang>_COMPILER to the MPI wrapper (mpicc, etc.) of your
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# choice and reconfigure. FindMPI will attempt to determine all the
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# necessary variables using THAT compiler's compile and link flags.
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#
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# If CMake initially finds a different MPI than was intended, and you
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# want to use the MPI compiler auto-detection for a different MPI
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# implementation, set MPI_COMPILER to the MPI compiler driver you want
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# to use (e.g., mpicxx) and then set MPI_LIBRARY to the string
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# MPI_LIBRARY-NOTFOUND. When you re-configure, auto-detection of MPI
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# will run again with the newly-specified MPI_COMPILER.
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# 2. If this fails, or if your MPI implementation does not come with
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# a compiler wrapper, then set both MPI_<lang>_LIBRARIES and
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# MPI_<lang>_INCLUDE_PATH. You may also set any other variables listed
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# above, but these two are required. This will circumvent
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# autodetection entirely.
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#
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# When using MPIEXEC to execute MPI applications, you should typically
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# use all of the MPIEXEC flags as follows:
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# When configuration is successful, MPI_<lang>_COMPILER will be set to the
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# compiler wrapper for <lang>, if it was found. MPI_<lang>_FOUND and other
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# variables above will be set if any MPI implementation was found for <lang>,
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# regardless of whether a compiler was found.
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#
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# When using MPIEXEC to execute MPI applications, you should typically use
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# all of the MPIEXEC flags as follows:
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# ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} PROCS ${MPIEXEC_PREFLAGS} EXECUTABLE
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# ${MPIEXEC_POSTFLAGS} ARGS
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# where PROCS is the number of processors on which to execute the program,
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# EXECUTABLE is the MPI program, and ARGS are the arguments to pass to the
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# MPI program.
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#
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#=== Backward Compatibility ==================================================
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# For backward compatibility with older versions of FindMPI, these
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# variables are set, but deprecated:
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#
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# MPI_FOUND MPI_COMPILER MPI_LIBRARY
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# MPI_COMPILE_FLAGS MPI_INCLUDE_PATH MPI_EXTRA_LIBRARY
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# MPI_LINK_FLAGS MPI_LIBRARIES
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#
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# In new projects, please use the MPI_<lang>_XXX equivalents.
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#
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#=============================================================================
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# Copyright 2001-2009 Kitware, Inc.
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# Copyright 2001-2011 Kitware, Inc.
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# Copyright 2010-2011 Todd Gamblin tgamblin@llnl.gov
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# Copyright 2001-2009 Dave Partyka
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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@ -65,170 +84,247 @@
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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# This module is maintained by David Partyka <dave.partyka@kitware.com>.
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# include this to handle the QUIETLY and REQUIRED arguments
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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include(GetPrerequisites)
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# A set of directories to search through in addition to the standard system paths
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# that find_program will search through.
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# Microsoft HPC SDK is automatically added to the system path
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# Argonne National Labs MPICH2 sets a registry key that we can use.
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#
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# This part detects MPI compilers, attempting to wade through the mess of compiler names in
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# a sensible way.
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#
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# The compilers are detected in this order:
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#
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# 1. Try to find the most generic availble MPI compiler, as this is usually set up by
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# cluster admins. e.g., if plain old mpicc is available, we'll use it and assume it's
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# the right compiler.
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#
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# 2. If a generic mpicc is NOT found, then we attempt to find one that matches
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# CMAKE_<lang>_COMPILER_ID. e.g. if you are using XL compilers, we'll try to find mpixlc
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# and company, but not mpiicc. This hopefully prevents toolchain mismatches.
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#
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# If you want to force a particular MPI compiler other than what we autodetect (e.g. if you
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# want to compile regular stuff with GNU and parallel stuff with Intel), you can always set
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# your favorite MPI_<lang>_COMPILER explicitly and this stuff will be ignored.
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#
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set(_MPI_PACKAGE_DIR
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mpi
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mpich
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openmpi
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lib/mpi
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lib/mpich
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lib/openmpi
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"MPICH/SDK"
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"Microsoft Compute Cluster Pack"
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"Microsoft HPC Pack 2008 R2"
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)
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# Start out with the generic MPI compiler names, as these are most commonly used.
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set(_MPI_C_COMPILER_NAMES mpicc mpcc mpicc_r mpcc_r)
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set(_MPI_CXX_COMPILER_NAMES mpicxx mpiCC mpcxx mpCC mpic++ mpc++
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mpicxx_r mpiCC_r mpcxx_r mpCC_r mpic++_r mpc++_r)
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set(_MPI_Fortran_COMPILER_NAMES mpif95 mpif95_r mpf95 mpf95_r
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mpif90 mpif90_r mpf90 mpf90_r
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mpif77 mpif77_r mpf77 mpf77_r)
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# GNU compiler names
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set(_MPI_GNU_C_COMPILER_NAMES mpigcc mpgcc mpigcc_r mpgcc_r)
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set(_MPI_GNU_CXX_COMPILER_NAMES mpig++ mpg++ mpig++_r mpg++_r)
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set(_MPI_GNU_Fortran_COMPILER_NAMES mpigfortran mpgfortran mpigfortran_r mpgfortran_r
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mpig77 mpig77_r mpg77 mpg77_r)
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# Intel MPI compiler names
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set(_MPI_Intel_C_COMPILER_NAMES mpiicc)
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set(_MPI_Intel_CXX_COMPILER_NAMES mpiicpc mpiicxx mpiic++ mpiiCC)
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set(_MPI_Intel_Fortran_COMPILER_NAMES mpiifort mpiif95 mpiif90 mpiif77)
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# PGI compiler names
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set(_MPI_PGI_C_COMPILER_NAMES mpipgcc mppgcc)
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set(_MPI_PGI_CXX_COMPILER_NAMES mpipgCC mppgCC)
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set(_MPI_PGI_Fortran_COMPILER_NAMES mpipgf95 mpipgf90 mppgf95 mppgf90 mpipgf77 mppgf77)
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# XLC MPI Compiler names
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set(_MPI_XL_C_COMPILER_NAMES mpxlc mpxlc_r mpixlc mpixlc_r)
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set(_MPI_XL_CXX_COMPILER_NAMES mpixlcxx mpixlC mpixlc++ mpxlcxx mpxlc++ mpixlc++ mpxlCC
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mpixlcxx_r mpixlC_r mpixlc++_r mpxlcxx_r mpxlc++_r mpixlc++_r mpxlCC_r)
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set(_MPI_XL_Fortran_COMPILER_NAMES mpixlf95 mpixlf95_r mpxlf95 mpxlf95_r
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mpixlf90 mpixlf90_r mpxlf90 mpxlf90_r
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mpixlf77 mpixlf77_r mpxlf77 mpxlf77_r
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mpixlf mpixlf_r mpxlf mpxlf_r)
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# append vendor-specific compilers to the list if we either don't know the compiler id,
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# or if we know it matches the regular compiler.
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foreach (lang C CXX Fortran)
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foreach (id GNU Intel PGI XL)
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if (NOT CMAKE_${lang}_COMPILER_ID OR "${CMAKE_${lang}_COMPILER_ID}" STREQUAL "${id}")
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list(APPEND _MPI_${lang}_COMPILER_NAMES ${_MPI_${id}_${lang}_COMPILER_NAMES})
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endif()
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unset(_MPI_${id}_${lang}_COMPILER_NAMES) # clean up the namespace here
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endforeach()
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endforeach()
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# Names to try for MPI exec
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set(_MPI_EXEC_NAMES mpiexec mpirun lamexec srun)
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# Grab the path to MPI from the registry if we're on windows.
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set(_MPI_PREFIX_PATH)
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if(WIN32)
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list(APPEND _MPI_PREFIX_PATH "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH\\SMPD;binary]/..")
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list(APPEND _MPI_PREFIX_PATH "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH2;Path]")
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list(APPEND _MPI_PREFIX_PATH "$ENV{ProgramW6432}/MPICH2/")
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endif()
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# Build a list of prefixes to search for MPI.
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foreach(SystemPrefixDir ${CMAKE_SYSTEM_PREFIX_PATH})
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foreach(MpiPackageDir ${_MPI_PREFIX_PATH})
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if(EXISTS ${SystemPrefixDir}/${MpiPackageDir})
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list(APPEND _MPI_PREFIX_PATH "${SystemPrefixDir}/${MpiPackageDir}")
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endif()
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endforeach(MpiPackageDir)
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endforeach(SystemPrefixDir)
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endforeach()
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endforeach()
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# Most mpi distros have some form of mpiexec which gives us something we can reliably look for.
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find_program(MPIEXEC
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NAMES mpiexec mpirun lamexec
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PATHS ${_MPI_PREFIX_PATH}
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PATH_SUFFIXES bin
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DOC "Executable for running MPI programs."
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)
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# call get_filename_component twice to remove mpiexec and the directory it exists in (typically bin).
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# This gives us a fairly reliable base directory to search for /bin /lib and /include from.
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get_filename_component(_MPI_BASE_DIR "${MPIEXEC}" PATH)
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get_filename_component(_MPI_BASE_DIR "${_MPI_BASE_DIR}" PATH)
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# If there is an mpi compiler find it and interogate (farther below) it for the include
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# and lib dirs otherwise we will continue to search from ${_MPI_BASE_DIR}.
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find_program(MPI_COMPILER
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NAMES mpic++ mpicxx mpiCC mpicc
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HINTS "${_MPI_BASE_DIR}"
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PATH_SUFFIXES bin
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DOC "MPI compiler. Used only to detect MPI compilation flags.")
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mark_as_advanced(MPI_COMPILER)
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set(MPIEXEC_NUMPROC_FLAG "-np" CACHE STRING "Flag used by MPI to specify the number of processes for MPIEXEC; the next option will be the number of processes.")
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set(MPIEXEC_PREFLAGS "" CACHE STRING "These flags will be directly before the executable that is being run by MPIEXEC.")
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set(MPIEXEC_POSTFLAGS "" CACHE STRING "These flags will come after all flags given to MPIEXEC.")
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set(MPIEXEC_MAX_NUMPROCS "2" CACHE STRING "Maximum number of processors available to run MPI applications.")
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mark_as_advanced(MPIEXEC MPIEXEC_NUMPROC_FLAG MPIEXEC_PREFLAGS
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MPIEXEC_POSTFLAGS MPIEXEC_MAX_NUMPROCS)
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if (MPI_INCLUDE_PATH AND MPI_LIBRARY)
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# Do nothing: we already have MPI_INCLUDE_PATH and MPI_LIBRARY in
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# the cache, and we don't want to override those settings.
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elseif (MPI_COMPILER)
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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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# Note that Windows distros do not have an mpi compiler to interogate.
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exec_program(${MPI_COMPILER}
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ARGS -showme:compile
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
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RETURN_VALUE MPI_COMPILER_RETURN)
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#
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# interrogate_mpi_compiler(lang try_libs)
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#
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# Attempts to extract compiler and linker args from an MPI compiler. The arguments set
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# by this function are:
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#
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# MPI_<lang>_INCLUDE_PATH MPI_<lang>_LINK_FLAGS MPI_<lang>_FOUND
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# MPI_<lang>_COMPILE_FLAGS MPI_<lang>_LIBRARIES
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#
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# MPI_<lang>_COMPILER must be set beforehand to the absolute path to an MPI compiler for
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# <lang>. Additionally, MPI_<lang>_INCLUDE_PATH and MPI_<lang>_LIBRARIES may be set
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# to skip autodetection.
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#
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# If try_libs is TRUE, this will also attempt to find plain MPI libraries in the usual
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# way. In general, this is not as effective as interrogating the compilers, as it
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# ignores language-specific flags and libraries. However, some MPI implementations
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# (Windows implementations) do not have compiler wrappers, so this approach must be used.
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#
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function (interrogate_mpi_compiler lang try_libs)
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# if it's already in the cache, don't bother with any of this stuff
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if ((NOT MPI_INCLUDE_PATH) OR (NOT MPI_${lang}_LIBRARIES))
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if (MPI_${lang}_COMPILER)
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# Check whether the -showme:compile option works. This indicates that we have either OpenMPI
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# or a newer version of LAM-MPI, and implies that -showme:link will also work.
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -showme:compile
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE MPI_COMPILER_RETURN)
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if (MPI_COMPILER_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(${MPI_COMPILER}
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ARGS -showme:link
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OUTPUT_VARIABLE MPI_LINK_CMDLINE
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RETURN_VALUE MPI_COMPILER_RETURN)
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# Note that we probably have -showme:incdirs and -showme:libdirs
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# as well.
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set(MPI_COMPILER_MAY_HAVE_INCLIBDIRS TRUE)
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endif (MPI_COMPILER_RETURN EQUAL 0)
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# If we appear to have -showme:compile, then we should
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# also have -showme:link. Try it.
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -showme:link
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OUTPUT_VARIABLE MPI_LINK_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_LINK_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE MPI_COMPILER_RETURN)
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if (MPI_COMPILER_RETURN EQUAL 0)
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# Do nothing: we have our command lines now
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else (MPI_COMPILER_RETURN EQUAL 0)
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# Older versions of LAM-MPI have "-showme". Try it.
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exec_program(${MPI_COMPILER}
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ARGS -showme
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
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RETURN_VALUE MPI_COMPILER_RETURN)
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endif (MPI_COMPILER_RETURN EQUAL 0)
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# We probably have -showme:incdirs and -showme:libdirs as well,
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# so grab that while we're at it.
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -showme:incdirs
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OUTPUT_VARIABLE MPI_INCDIRS OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_INCDIRS ERROR_STRIP_TRAILING_WHITESPACE)
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -showme:libdirs
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OUTPUT_VARIABLE MPI_LIBDIRS OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_LIBDIRS ERROR_STRIP_TRAILING_WHITESPACE)
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else()
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# reset things here if something went wrong.
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set(MPI_COMPILE_CMDLINE)
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set(MPI_LINK_CMDLINE)
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endif()
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endif ()
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# Older versions of LAM-MPI have "-showme". Try to find that.
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if (NOT MPI_COMPILER_RETURN EQUAL 0)
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -showme
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE MPI_COMPILER_RETURN)
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endif()
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# MVAPICH uses -compile-info and -link-info. Try them.
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if (NOT MPI_COMPILER_RETURN EQUAL 0)
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execute_process(
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COMMAND ${MPI_${lang}_COMPILER} -compile-info
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OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE MPI_COMPILER_RETURN)
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# If we have compile-info, also have link-info.
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if (MPI_COMPILER_RETURN EQUAL 0)
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execute_process(
|
||||
COMMAND ${MPI_${lang}_COMPILER} -link-info
|
||||
OUTPUT_VARIABLE MPI_LINK_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
|
||||
ERROR_VARIABLE MPI_LINK_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
|
||||
RESULT_VARIABLE MPI_COMPILER_RETURN)
|
||||
endif()
|
||||
|
||||
# make sure we got compile and link. Reset vars if something's wrong.
|
||||
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
||||
set(MPI_COMPILE_CMDLINE)
|
||||
set(MPI_LINK_CMDLINE)
|
||||
endif()
|
||||
endif()
|
||||
|
||||
# MPICH just uses "-show". Try it.
|
||||
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
||||
execute_process(
|
||||
COMMAND ${MPI_${lang}_COMPILER} -show
|
||||
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE OUTPUT_STRIP_TRAILING_WHITESPACE
|
||||
ERROR_VARIABLE MPI_COMPILE_CMDLINE ERROR_STRIP_TRAILING_WHITESPACE
|
||||
RESULT_VARIABLE MPI_COMPILER_RETURN)
|
||||
endif()
|
||||
|
||||
if (MPI_COMPILER_RETURN EQUAL 0)
|
||||
# Do nothing: we have our command lines now
|
||||
else (MPI_COMPILER_RETURN EQUAL 0)
|
||||
# MPICH uses "-show". Try it.
|
||||
exec_program(${MPI_COMPILER}
|
||||
ARGS -show
|
||||
OUTPUT_VARIABLE MPI_COMPILE_CMDLINE
|
||||
RETURN_VALUE MPI_COMPILER_RETURN)
|
||||
endif (MPI_COMPILER_RETURN EQUAL 0)
|
||||
|
||||
if (MPI_COMPILER_RETURN EQUAL 0)
|
||||
# We have our command lines, but we might need to copy
|
||||
# MPI_COMPILE_CMDLINE into MPI_LINK_CMDLINE, if the underlying
|
||||
# We have our command lines, but we might need to copy MPI_COMPILE_CMDLINE
|
||||
# into MPI_LINK_CMDLINE, if we didn't find the link line.
|
||||
if (NOT MPI_LINK_CMDLINE)
|
||||
SET(MPI_LINK_CMDLINE ${MPI_COMPILE_CMDLINE})
|
||||
endif (NOT MPI_LINK_CMDLINE)
|
||||
else (MPI_COMPILER_RETURN EQUAL 0)
|
||||
message(STATUS "Unable to determine MPI from MPI driver ${MPI_COMPILER}")
|
||||
endif (MPI_COMPILER_RETURN EQUAL 0)
|
||||
endif (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
set(MPI_LINK_CMDLINE ${MPI_COMPILE_CMDLINE})
|
||||
endif()
|
||||
else()
|
||||
message(STATUS "Unable to determine MPI from MPI driver ${MPI_${lang}_COMPILER}")
|
||||
set(MPI_COMPILE_CMDLINE)
|
||||
set(MPI_LINK_CMDLINE)
|
||||
endif()
|
||||
|
||||
if (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
# Do nothing: we already have MPI_INCLUDE_PATH and MPI_LIBRARY in
|
||||
# the cache, and we don't want to override those settings.
|
||||
elseif (MPI_COMPILE_CMDLINE)
|
||||
# Here, we're done with the interrogation part, and we'll try to extract args we care
|
||||
# about from what we learned from the compiler wrapper scripts.
|
||||
|
||||
# If interrogation came back with something, extract our variable from the MPI command line
|
||||
if (MPI_COMPILE_CMDLINE OR MPI_LINK_CMDLINE)
|
||||
# Extract compile flags from the compile command line.
|
||||
string(REGEX MATCHALL "(^| )-[Df]([^\" ]+|\"[^\"]+\")" MPI_ALL_COMPILE_FLAGS "${MPI_COMPILE_CMDLINE}")
|
||||
set(MPI_COMPILE_FLAGS_WORK)
|
||||
|
||||
foreach(FLAG ${MPI_ALL_COMPILE_FLAGS})
|
||||
if (MPI_COMPILE_FLAGS_WORK)
|
||||
set(MPI_COMPILE_FLAGS_WORK "${MPI_COMPILE_FLAGS_WORK} ${FLAG}")
|
||||
else(MPI_COMPILE_FLAGS_WORK)
|
||||
else()
|
||||
set(MPI_COMPILE_FLAGS_WORK ${FLAG})
|
||||
endif(MPI_COMPILE_FLAGS_WORK)
|
||||
endforeach(FLAG)
|
||||
endif()
|
||||
endforeach()
|
||||
|
||||
# Extract include paths from compile command line
|
||||
string(REGEX MATCHALL "(^| )-I([^\" ]+|\"[^\"]+\")" MPI_ALL_INCLUDE_PATHS "${MPI_COMPILE_CMDLINE}")
|
||||
set(MPI_INCLUDE_PATH_WORK)
|
||||
foreach(IPATH ${MPI_ALL_INCLUDE_PATHS})
|
||||
string(REGEX REPLACE "^ ?-I" "" IPATH ${IPATH})
|
||||
string(REGEX REPLACE "//" "/" IPATH ${IPATH})
|
||||
list(APPEND MPI_INCLUDE_PATH_WORK ${IPATH})
|
||||
endforeach(IPATH)
|
||||
endforeach()
|
||||
|
||||
# try using showme:incdirs if extracting didn't work.
|
||||
if (NOT MPI_INCLUDE_PATH_WORK)
|
||||
if (MPI_COMPILER_MAY_HAVE_INCLIBDIRS)
|
||||
# The compile command line didn't have any include paths on it,
|
||||
# but we may have -showme:incdirs. Use it.
|
||||
exec_program(${MPI_COMPILER}
|
||||
ARGS -showme:incdirs
|
||||
OUTPUT_VARIABLE MPI_INCLUDE_PATH_WORK
|
||||
RETURN_VALUE MPI_COMPILER_RETURN)
|
||||
set(MPI_INCLUDE_PATH_WORK ${MPI_INCDIRS})
|
||||
separate_arguments(MPI_INCLUDE_PATH_WORK)
|
||||
endif (MPI_COMPILER_MAY_HAVE_INCLIBDIRS)
|
||||
endif (NOT MPI_INCLUDE_PATH_WORK)
|
||||
endif()
|
||||
|
||||
# If all else fails, just search for mpi.h in the normal include paths.
|
||||
if (NOT MPI_INCLUDE_PATH_WORK)
|
||||
# If all else fails, just search for mpi.h in the normal include
|
||||
# paths.
|
||||
find_path(MPI_INCLUDE_PATH mpi.h
|
||||
set(MPI_HEADER_PATH "MPI_HEADER_PATH-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
|
||||
find_path(MPI_HEADER_PATH mpi.h
|
||||
HINTS ${_MPI_BASE_DIR} ${_MPI_PREFIX_PATH}
|
||||
PATH_SUFFIXES include
|
||||
)
|
||||
set(MPI_INCLUDE_PATH_WORK ${MPI_INCLUDE_PATH})
|
||||
endif (NOT MPI_INCLUDE_PATH_WORK)
|
||||
PATH_SUFFIXES include)
|
||||
set(MPI_INCLUDE_PATH_WORK ${MPI_HEADER_PATH})
|
||||
endif()
|
||||
|
||||
# Extract linker paths from the link command line
|
||||
string(REGEX MATCHALL "(^| |-Wl,)-L([^\" ]+|\"[^\"]+\")" MPI_ALL_LINK_PATHS "${MPI_LINK_CMDLINE}")
|
||||
|
|
@ -237,19 +333,13 @@ elseif (MPI_COMPILE_CMDLINE)
|
|||
string(REGEX REPLACE "^(| |-Wl,)-L" "" LPATH ${LPATH})
|
||||
string(REGEX REPLACE "//" "/" LPATH ${LPATH})
|
||||
list(APPEND MPI_LINK_PATH ${LPATH})
|
||||
endforeach(LPATH)
|
||||
endforeach()
|
||||
|
||||
# try using showme:libdirs if extracting didn't work.
|
||||
if (NOT MPI_LINK_PATH)
|
||||
if (MPI_COMPILER_MAY_HAVE_INCLIBDIRS)
|
||||
# The compile command line didn't have any linking paths on it,
|
||||
# but we may have -showme:libdirs. Use it.
|
||||
exec_program(${MPI_COMPILER}
|
||||
ARGS -showme:libdirs
|
||||
OUTPUT_VARIABLE MPI_LINK_PATH
|
||||
RETURN_VALUE MPI_COMPILER_RETURN)
|
||||
set(MPI_LINK_PATH ${MPI_LIBDIRS})
|
||||
separate_arguments(MPI_LINK_PATH)
|
||||
endif (MPI_COMPILER_MAY_HAVE_INCLIBDIRS)
|
||||
endif (NOT MPI_LINK_PATH)
|
||||
endif()
|
||||
|
||||
# Extract linker flags from the link command line
|
||||
string(REGEX MATCHALL "(^| )-Wl,([^\" ]+|\"[^\"]+\")" MPI_ALL_LINK_FLAGS "${MPI_LINK_CMDLINE}")
|
||||
|
|
@ -257,10 +347,10 @@ elseif (MPI_COMPILE_CMDLINE)
|
|||
foreach(FLAG ${MPI_ALL_LINK_FLAGS})
|
||||
if (MPI_LINK_FLAGS_WORK)
|
||||
set(MPI_LINK_FLAGS_WORK "${MPI_LINK_FLAGS_WORK} ${FLAG}")
|
||||
else(MPI_LINK_FLAGS_WORK)
|
||||
else()
|
||||
set(MPI_LINK_FLAGS_WORK ${FLAG})
|
||||
endif(MPI_LINK_FLAGS_WORK)
|
||||
endforeach(FLAG)
|
||||
endif()
|
||||
endforeach()
|
||||
|
||||
# Extract the set of libraries to link against from the link command
|
||||
# line
|
||||
|
|
@ -268,47 +358,36 @@ elseif (MPI_COMPILE_CMDLINE)
|
|||
|
||||
# Determine full path names for all of the libraries that one needs
|
||||
# to link against in an MPI program
|
||||
set(MPI_LIBRARIES)
|
||||
foreach(LIB ${MPI_LIBNAMES})
|
||||
string(REGEX REPLACE "^ ?-l" "" LIB ${LIB})
|
||||
# MPI_LIB is cached by find_library, but we don't want that. Clear it first.
|
||||
set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
|
||||
find_library(MPI_LIB ${LIB} HINTS ${MPI_LINK_PATH})
|
||||
find_library(MPI_LIB NAMES ${LIB} HINTS ${MPI_LINK_PATH})
|
||||
|
||||
if (MPI_LIB)
|
||||
list(APPEND MPI_LIBRARIES ${MPI_LIB})
|
||||
list(APPEND MPI_LIBRARIES_WORK ${MPI_LIB})
|
||||
elseif (NOT MPI_FIND_QUIETLY)
|
||||
message(WARNING "Unable to find MPI library ${LIB}")
|
||||
endif ()
|
||||
endforeach(LIB)
|
||||
set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE INTERNAL "Scratch variable for MPI detection" FORCE)
|
||||
endif()
|
||||
endforeach()
|
||||
|
||||
# Chop MPI_LIBRARIES into the old-style MPI_LIBRARY and
|
||||
# MPI_EXTRA_LIBRARY.
|
||||
list(LENGTH MPI_LIBRARIES MPI_NUMLIBS)
|
||||
# Sanity check MPI_LIBRARIES to make sure there are enough libraries
|
||||
list(LENGTH MPI_LIBRARIES_WORK MPI_NUMLIBS)
|
||||
list(LENGTH MPI_LIBNAMES MPI_NUMLIBS_EXPECTED)
|
||||
if (MPI_NUMLIBS EQUAL MPI_NUMLIBS_EXPECTED)
|
||||
list(GET MPI_LIBRARIES 0 MPI_LIBRARY_WORK)
|
||||
set(MPI_LIBRARY ${MPI_LIBRARY_WORK} CACHE FILEPATH "MPI library to link against" FORCE)
|
||||
else (MPI_NUMLIBS EQUAL MPI_NUMLIBS_EXPECTED)
|
||||
set(MPI_LIBRARY "MPI_LIBRARY-NOTFOUND" CACHE FILEPATH "MPI library to link against" FORCE)
|
||||
endif (MPI_NUMLIBS EQUAL MPI_NUMLIBS_EXPECTED)
|
||||
if (MPI_NUMLIBS GREATER 1)
|
||||
set(MPI_EXTRA_LIBRARY_WORK ${MPI_LIBRARIES})
|
||||
list(REMOVE_AT MPI_EXTRA_LIBRARY_WORK 0)
|
||||
set(MPI_EXTRA_LIBRARY ${MPI_EXTRA_LIBRARY_WORK} CACHE STRING "Extra MPI libraries to link against" FORCE)
|
||||
else (MPI_NUMLIBS GREATER 1)
|
||||
set(MPI_EXTRA_LIBRARY "MPI_EXTRA_LIBRARY-NOTFOUND" CACHE STRING "Extra MPI libraries to link against" FORCE)
|
||||
endif (MPI_NUMLIBS GREATER 1)
|
||||
if (NOT MPI_NUMLIBS EQUAL MPI_NUMLIBS_EXPECTED)
|
||||
set(MPI_LIBRARIES_WORK "MPI_${lang}_LIBRARIES-NOTFOUND")
|
||||
endif()
|
||||
endif()
|
||||
|
||||
# Set up all of the appropriate cache entries
|
||||
set(MPI_COMPILE_FLAGS ${MPI_COMPILE_FLAGS_WORK} CACHE STRING "MPI compilation flags" FORCE)
|
||||
set(MPI_INCLUDE_PATH ${MPI_INCLUDE_PATH_WORK} CACHE STRING "MPI include path" FORCE)
|
||||
set(MPI_LINK_FLAGS ${MPI_LINK_FLAGS_WORK} CACHE STRING "MPI linking flags" FORCE)
|
||||
else (MPI_COMPILE_CMDLINE)
|
||||
# No MPI compiler to interogate so attempt to find everything with find functions.
|
||||
find_path(MPI_INCLUDE_PATH mpi.h
|
||||
elseif(try_libs)
|
||||
# If we didn't have an MPI compiler script to interrogate, attempt to find everything
|
||||
# with plain old find functions. This is nasty because MPI implementations have LOTS of
|
||||
# different library names, so this section isn't going to be very generic. We need to
|
||||
# make sure it works for MS MPI, though, since there are no compiler wrappers for that.
|
||||
find_path(MPI_HEADER_PATH mpi.h
|
||||
HINTS ${_MPI_BASE_DIR} ${_MPI_PREFIX_PATH}
|
||||
PATH_SUFFIXES include Inc
|
||||
)
|
||||
PATH_SUFFIXES include Inc)
|
||||
set(MPI_INCLUDE_PATH_WORK ${MPI_HEADER_PATH})
|
||||
|
||||
# Decide between 32-bit and 64-bit libraries for Microsoft's MPI
|
||||
if("${CMAKE_SIZEOF_VOID_P}" EQUAL 8)
|
||||
|
|
@ -317,43 +396,146 @@ else (MPI_COMPILE_CMDLINE)
|
|||
set(MS_MPI_ARCH_DIR i386)
|
||||
endif()
|
||||
|
||||
find_library(MPI_LIBRARY
|
||||
NAMES mpi mpich msmpi
|
||||
set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
|
||||
find_library(MPI_LIB
|
||||
NAMES mpi mpich mpich2 msmpi
|
||||
HINTS ${_MPI_BASE_DIR} ${_MPI_PREFIX_PATH}
|
||||
PATH_SUFFIXES lib lib/${MS_MPI_ARCH_DIR} Lib Lib/${MS_MPI_ARCH_DIR}
|
||||
)
|
||||
PATH_SUFFIXES lib lib/${MS_MPI_ARCH_DIR} Lib Lib/${MS_MPI_ARCH_DIR})
|
||||
set(MPI_LIBRARIES_WORK ${MPI_LIB})
|
||||
|
||||
find_library(MPI_EXTRA_LIBRARY
|
||||
NAMES mpi++
|
||||
# Right now, we only know about the extra libs for C++.
|
||||
# We could add Fortran here (as there is usually libfmpich, etc.), but
|
||||
# this really only has to work with MS MPI on Windows.
|
||||
# Assume that other MPI's are covered by the compiler wrappers.
|
||||
if (${lang} STREQUAL CXX)
|
||||
set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
|
||||
find_library(MPI_LIB
|
||||
NAMES mpi++ mpicxx cxx mpi_cxx
|
||||
HINTS ${_MPI_BASE_DIR} ${_MPI_PREFIX_PATH}
|
||||
PATH_SUFFIXES lib
|
||||
DOC "Extra MPI libraries to link against.")
|
||||
PATH_SUFFIXES lib)
|
||||
if (MPI_LIBRARIES_WORK AND MPI_LIB)
|
||||
set(MPI_LIBRARIES_WORK "${MPI_LIBRARIES_WORK} ${MPI_LIB}")
|
||||
endif()
|
||||
endif()
|
||||
|
||||
set(MPI_COMPILE_FLAGS "" CACHE STRING "MPI compilation flags")
|
||||
set(MPI_LINK_FLAGS "" CACHE STRING "MPI linking flags")
|
||||
endif (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
if (NOT MPI_LIBRARIES_WORK)
|
||||
set(MPI_LIBRARIES_WORK "MPI_${lang}_LIBRARIES-NOTFOUND")
|
||||
endif()
|
||||
endif()
|
||||
|
||||
# Set up extra variables to conform to
|
||||
if (MPI_EXTRA_LIBRARY)
|
||||
set(MPI_LIBRARIES ${MPI_LIBRARY} ${MPI_EXTRA_LIBRARY})
|
||||
else (MPI_EXTRA_LIBRARY)
|
||||
set(MPI_LIBRARIES ${MPI_LIBRARY})
|
||||
endif (MPI_EXTRA_LIBRARY)
|
||||
# If we found MPI, set up all of the appropriate cache entries
|
||||
set(MPI_${lang}_COMPILE_FLAGS ${MPI_COMPILE_FLAGS_WORK} CACHE STRING "MPI ${lang} compilation flags" FORCE)
|
||||
set(MPI_${lang}_INCLUDE_PATH ${MPI_INCLUDE_PATH_WORK} CACHE STRING "MPI ${lang} include path" FORCE)
|
||||
set(MPI_${lang}_LINK_FLAGS ${MPI_LINK_FLAGS_WORK} CACHE STRING "MPI ${lang} linking flags" FORCE)
|
||||
set(MPI_${lang}_LIBRARIES ${MPI_LIBRARIES_WORK} CACHE STRING "MPI ${lang} libraries to link against" FORCE)
|
||||
mark_as_advanced(MPI_${lang}_COMPILE_FLAGS MPI_${lang}_INCLUDE_PATH MPI_${lang}_LINK_FLAGS MPI_${lang}_LIBRARIES)
|
||||
|
||||
if (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
set(MPI_FOUND TRUE)
|
||||
else (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
# clear out our temporary lib/header detectionv variable here.
|
||||
set(MPI_LIB "MPI_LIB-NOTFOUND" CACHE INTERNAL "Scratch variable for MPI lib detection" FORCE)
|
||||
set(MPI_HEADER_PATH "MPI_HEADER_PATH-NOTFOUND" CACHE INTERNAL "Scratch variable for MPI header detection" FORCE)
|
||||
endif()
|
||||
|
||||
# finally set a found variable for each MPI language
|
||||
if (MPI_${lang}_INCLUDE_PATH AND MPI_${lang}_LIBRARIES)
|
||||
set(MPI_${lang}_FOUND TRUE PARENT_SCOPE)
|
||||
else()
|
||||
set(MPI_${lang}_FOUND FALSE PARENT_SCOPE)
|
||||
endif()
|
||||
endfunction()
|
||||
|
||||
|
||||
# End definitions, commence real work here.
|
||||
|
||||
# Most mpi distros have some form of mpiexec which gives us something we can reliably look for.
|
||||
find_program(MPIEXEC
|
||||
NAMES ${_MPI_EXEC_NAMES}
|
||||
PATHS ${_MPI_PREFIX_PATH}
|
||||
PATH_SUFFIXES bin
|
||||
DOC "Executable for running MPI programs.")
|
||||
|
||||
# call get_filename_component twice to remove mpiexec and the directory it exists in (typically bin).
|
||||
# This gives us a fairly reliable base directory to search for /bin /lib and /include from.
|
||||
get_filename_component(_MPI_BASE_DIR "${MPIEXEC}" PATH)
|
||||
get_filename_component(_MPI_BASE_DIR "${_MPI_BASE_DIR}" PATH)
|
||||
|
||||
set(MPIEXEC_NUMPROC_FLAG "-np" CACHE STRING "Flag used by MPI to specify the number of processes for MPIEXEC; the next option will be the number of processes.")
|
||||
set(MPIEXEC_PREFLAGS "" CACHE STRING "These flags will be directly before the executable that is being run by MPIEXEC.")
|
||||
set(MPIEXEC_POSTFLAGS "" CACHE STRING "These flags will come after all flags given to MPIEXEC.")
|
||||
set(MPIEXEC_MAX_NUMPROCS "2" CACHE STRING "Maximum number of processors available to run MPI applications.")
|
||||
mark_as_advanced(MPIEXEC MPIEXEC_NUMPROC_FLAG MPIEXEC_PREFLAGS MPIEXEC_POSTFLAGS MPIEXEC_MAX_NUMPROCS)
|
||||
|
||||
# This loop finds the compilers and sends them off for interrogation.
|
||||
foreach (lang C CXX Fortran)
|
||||
if (CMAKE_${lang}_COMPILER_WORKS)
|
||||
# If the user supplies a compiler *name* instead of an absolute path, assume that we need to find THAT compiler.
|
||||
if (MPI_${lang}_COMPILER)
|
||||
is_file_executable(MPI_${lang}_COMPILER MPI_COMPILER_IS_EXECUTABLE)
|
||||
if (NOT MPI_COMPILER_IS_EXECUTABLE)
|
||||
# Get rid of our default list of names and just search for the name the user wants.
|
||||
set(_MPI_${lang}_COMPILER_NAMES ${MPI_${lang}_COMPILER})
|
||||
set(MPI_${lang}_COMPILER "MPI_${lang}_COMPILER-NOTFOUND" CACHE FILEPATH "Cleared" FORCE)
|
||||
# If the user specifies a compiler, we don't want to try to search libraries either.
|
||||
set(try_libs FALSE)
|
||||
endif()
|
||||
else()
|
||||
set(try_libs TRUE)
|
||||
endif()
|
||||
|
||||
find_program(MPI_${lang}_COMPILER
|
||||
NAMES ${_MPI_${lang}_COMPILER_NAMES}
|
||||
PATHS "${MPI_HOME}/bin" "$ENV{MPI_HOME}/bin" ${_MPI_PREFIX_PATH})
|
||||
interrogate_mpi_compiler(${lang} ${try_libs})
|
||||
mark_as_advanced(MPI_${lang}_COMPILER)
|
||||
|
||||
# Treat each language separately as far as outputting whether we found support for it and setting MPI_<lang>_FOUND.
|
||||
find_package_handle_standard_args(MPI_${lang} DEFAULT_MSG MPI_${lang}_LIBRARIES MPI_${lang}_INCLUDE_PATH)
|
||||
endif()
|
||||
endforeach()
|
||||
|
||||
|
||||
#=============================================================================
|
||||
# Backward compatibility stuff
|
||||
#
|
||||
# Bare MPI sans ${lang} vars are set to CXX then C, depending on what was found.
|
||||
# This mimics the behavior of the old language-oblivious FindMPI.
|
||||
set(_MPI_OLD_VARS FOUND COMPILER INCLUDE_PATH COMPILE_FLAGS LINK_FLAGS LIBRARIES)
|
||||
if (MPI_CXX_FOUND)
|
||||
foreach (var ${_MPI_OLD_VARS})
|
||||
set(MPI_${var} ${MPI_CXX_${var}})
|
||||
endforeach()
|
||||
elseif (MPI_C_FOUND)
|
||||
foreach (var ${_MPI_OLD_VARS})
|
||||
set(MPI_${var} ${MPI_C_${var}})
|
||||
endforeach()
|
||||
else()
|
||||
# Note that we might still have found Fortran, but you'll need to use MPI_Fortran_FOUND
|
||||
set(MPI_FOUND FALSE)
|
||||
endif (MPI_INCLUDE_PATH AND MPI_LIBRARY)
|
||||
endif()
|
||||
|
||||
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
|
||||
# handle the QUIETLY and REQUIRED arguments
|
||||
find_package_handle_standard_args(MPI DEFAULT_MSG MPI_LIBRARY MPI_INCLUDE_PATH)
|
||||
# Chop MPI_LIBRARIES into the old-style MPI_LIBRARY and MPI_EXTRA_LIBRARY, and set them in cache.
|
||||
if (MPI_LIBRARIES)
|
||||
list(GET MPI_LIBRARIES 0 MPI_LIBRARY_WORK)
|
||||
set(MPI_LIBRARY ${MPI_LIBRARY_WORK} CACHE FILEPATH "MPI library to link against" FORCE)
|
||||
else()
|
||||
set(MPI_LIBRARY "MPI_LIBRARY-NOTFOUND" CACHE FILEPATH "MPI library to link against" FORCE)
|
||||
endif()
|
||||
|
||||
mark_as_advanced(MPI_INCLUDE_PATH MPI_COMPILE_FLAGS MPI_LINK_FLAGS MPI_LIBRARY
|
||||
MPI_EXTRA_LIBRARY)
|
||||
list(LENGTH MPI_LIBRARIES MPI_NUMLIBS)
|
||||
if (MPI_NUMLIBS GREATER 1)
|
||||
set(MPI_EXTRA_LIBRARY_WORK ${MPI_LIBRARIES})
|
||||
list(REMOVE_AT MPI_EXTRA_LIBRARY_WORK 0)
|
||||
set(MPI_EXTRA_LIBRARY ${MPI_EXTRA_LIBRARY_WORK} CACHE STRING "Extra MPI libraries to link against" FORCE)
|
||||
else()
|
||||
set(MPI_EXTRA_LIBRARY "MPI_EXTRA_LIBRARY-NOTFOUND" CACHE STRING "Extra MPI libraries to link against" FORCE)
|
||||
endif()
|
||||
|
||||
# unset to cleanup namespace
|
||||
unset(_MPI_PACKAGE_DIR)
|
||||
# End backward compatibility contortions.
|
||||
#=============================================================================
|
||||
|
||||
# unset these vars to cleanup namespace
|
||||
unset(_MPI_OLD_VARS)
|
||||
unset(_MPI_PREFIX_PATH)
|
||||
unset(_MPI_BASE_DIR)
|
||||
foreach (lang C CXX Fortran)
|
||||
unset(_MPI_${lang}_COMPILER_NAMES)
|
||||
endforeach()
|
||||
|
|
|
|||
Loading…
Reference in New Issue