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7033a77942
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FindMPI: Pass -pthread to CUDA compiler through -Xcompiler
Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Robert Maynard <robert.maynard@kitware.com>
Merge-request: !2529
1742 lines
85 KiB
CMake
1742 lines
85 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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FindMPI
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-------
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Find a Message Passing Interface (MPI) implementation.
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The Message Passing Interface (MPI) is a library used to write
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high-performance distributed-memory parallel applications, and is
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typically deployed on a cluster. MPI is a standard interface (defined
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by the MPI forum) for which many implementations are available.
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Variables for using MPI
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^^^^^^^^^^^^^^^^^^^^^^^
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The module exposes the components ``C``, ``CXX``, ``MPICXX`` and ``Fortran``.
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Each of these controls the various MPI languages to search for.
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The difference between ``CXX`` and ``MPICXX`` is that ``CXX`` refers to the
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MPI C API being usable from C++, whereas ``MPICXX`` refers to the MPI-2 C++ API
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that was removed again in MPI-3.
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Depending on the enabled components the following variables will be set:
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``MPI_FOUND``
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Variable indicating that MPI settings for all requested languages have been found.
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If no components are specified, this is true if MPI settings for all enabled languages
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were detected. Note that the ``MPICXX`` component does not affect this variable.
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``MPI_VERSION``
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Minimal version of MPI detected among the requested languages, or all enabled languages
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if no components were specified.
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This module will set the following variables per language in your
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project, where ``<lang>`` is one of C, CXX, or Fortran:
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``MPI_<lang>_FOUND``
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Variable indicating the MPI settings for ``<lang>`` were found and that
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simple MPI test programs compile with the provided settings.
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``MPI_<lang>_COMPILER``
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MPI compiler for ``<lang>`` if such a program exists.
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``MPI_<lang>_COMPILE_OPTIONS``
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Compilation options for MPI programs in ``<lang>``, given as a :ref:`;-list <CMake Language Lists>`.
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``MPI_<lang>_COMPILE_DEFINITIONS``
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Compilation definitions for MPI programs in ``<lang>``, given as a :ref:`;-list <CMake Language Lists>`.
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``MPI_<lang>_INCLUDE_DIRS``
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Include path(s) for MPI header.
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``MPI_<lang>_LINK_FLAGS``
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Linker flags for MPI programs.
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``MPI_<lang>_LIBRARIES``
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All libraries to link MPI programs against.
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Additionally, the following :prop_tgt:`IMPORTED` targets are defined:
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``MPI::MPI_<lang>``
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Target for using MPI from ``<lang>``.
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The following variables indicating which bindings are present will be defined:
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``MPI_MPICXX_FOUND``
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Variable indicating whether the MPI-2 C++ bindings are present (introduced in MPI-2, removed with MPI-3).
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``MPI_Fortran_HAVE_F77_HEADER``
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True if the Fortran 77 header ``mpif.h`` is available.
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``MPI_Fortran_HAVE_F90_MODULE``
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True if the Fortran 90 module ``mpi`` can be used for accessing MPI (MPI-2 and higher only).
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``MPI_Fortran_HAVE_F08_MODULE``
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True if the Fortran 2008 ``mpi_f08`` is available to MPI programs (MPI-3 and higher only).
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If possible, the MPI version will be determined by this module. The facilities to detect the MPI version
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were introduced with MPI-1.2, and therefore cannot be found for older MPI versions.
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``MPI_<lang>_VERSION_MAJOR``
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Major version of MPI implemented for ``<lang>`` by the MPI distribution.
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``MPI_<lang>_VERSION_MINOR``
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Minor version of MPI implemented for ``<lang>`` by the MPI distribution.
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``MPI_<lang>_VERSION``
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MPI version implemented for ``<lang>`` by the MPI distribution.
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Note that there's no variable for the C bindings being accessible through ``mpi.h``, since the MPI standards
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always have required this binding to work in both C and C++ code.
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For running MPI programs, the module sets the following variables
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``MPIEXEC_EXECUTABLE``
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Executable for running MPI programs, if such exists.
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``MPIEXEC_NUMPROC_FLAG``
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Flag to pass to ``mpiexec`` before giving it the number of processors to run on.
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``MPIEXEC_MAX_NUMPROCS``
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Number of MPI processors to utilize. Defaults to the number
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of processors detected on the host system.
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``MPIEXEC_PREFLAGS``
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Flags to pass to ``mpiexec`` directly before the executable to run.
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``MPIEXEC_POSTFLAGS``
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Flags to pass to ``mpiexec`` after other flags.
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Variables for locating MPI
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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This module performs a three step search for an MPI implementation:
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1. Check if the compiler has MPI support built-in. This is the case if the user passed a
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compiler wrapper as ``CMAKE_<LANG>_COMPILER`` or if they're on a Cray system.
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2. Attempt to find an MPI compiler wrapper and determine the compiler information from it.
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3. Try to find an MPI implementation that does not ship such a wrapper by guessing settings.
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Currently, only Microsoft MPI and MPICH2 on Windows are supported.
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For controlling the second step, the following variables may be set:
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``MPI_<lang>_COMPILER``
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Search for the specified compiler wrapper and use it.
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``MPI_<lang>_COMPILER_FLAGS``
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Flags to pass to the MPI compiler wrapper during interrogation. Some compiler wrappers
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support linking debug or tracing libraries if a specific flag is passed and this variable
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may be used to obtain them.
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``MPI_COMPILER_FLAGS``
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Used to initialize ``MPI_<lang>_COMPILER_FLAGS`` if no language specific flag has been given.
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Empty by default.
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``MPI_EXECUTABLE_SUFFIX``
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A suffix which is appended to all names that are being looked for. For instance you may set this
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to ``.mpich`` or ``.openmpi`` to prefer the one or the other on Debian and its derivatives.
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In order to control the guessing step, the following variable may be set:
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``MPI_GUESS_LIBRARY_NAME``
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Valid values are ``MSMPI`` and ``MPICH2``. If set, only the given library will be searched for.
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By default, ``MSMPI`` will be preferred over ``MPICH2`` if both are available.
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This also sets ``MPI_SKIP_COMPILER_WRAPPER`` to ``true``, which may be overridden.
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Each of the search steps may be skipped with the following control variables:
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``MPI_ASSUME_NO_BUILTIN_MPI``
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If true, the module assumes that the compiler itself does not provide an MPI implementation and
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skips to step 2.
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``MPI_SKIP_COMPILER_WRAPPER``
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If true, no compiler wrapper will be searched for.
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``MPI_SKIP_GUESSING``
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If true, the guessing step will be skipped.
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Additionally, the following control variable is available to change search behavior:
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``MPI_CXX_SKIP_MPICXX``
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Add some definitions that will disable the MPI-2 C++ bindings.
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Currently supported are MPICH, Open MPI, Platform MPI and derivatives thereof,
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for example MVAPICH or Intel MPI.
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If the find procedure fails for a variable ``MPI_<lang>_WORKS``, then the settings detected by or passed to
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the module did not work and even a simple MPI test program failed to compile.
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If all of these parameters were not sufficient to find the right MPI implementation, a user may
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disable the entire autodetection process by specifying both a list of libraries in ``MPI_<lang>_LIBRARIES``
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and a list of include directories in ``MPI_<lang>_ADDITIONAL_INCLUDE_DIRS``.
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Any other variable may be set in addition to these two. The module will then validate the MPI settings and store the
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settings in the cache.
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Cache variables for MPI
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^^^^^^^^^^^^^^^^^^^^^^^
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The variable ``MPI_<lang>_INCLUDE_DIRS`` will be assembled from the following variables.
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For C and CXX:
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``MPI_<lang>_HEADER_DIR``
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Location of the ``mpi.h`` header on disk.
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For Fortran:
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``MPI_Fortran_F77_HEADER_DIR``
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Location of the Fortran 77 header ``mpif.h``, if it exists.
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``MPI_Fortran_MODULE_DIR``
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Location of the ``mpi`` or ``mpi_f08`` modules, if available.
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For all languages the following variables are additionally considered:
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``MPI_<lang>_ADDITIONAL_INCLUDE_DIRS``
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A :ref:`;-list <CMake Language Lists>` of paths needed in addition to the normal include directories.
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``MPI_<include_name>_INCLUDE_DIR``
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Path variables for include folders referred to by ``<include_name>``.
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``MPI_<lang>_ADDITIONAL_INCLUDE_VARS``
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A :ref:`;-list <CMake Language Lists>` of ``<include_name>`` that will be added to the include locations of ``<lang>``.
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The variable ``MPI_<lang>_LIBRARIES`` will be assembled from the following variables:
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``MPI_<lib_name>_LIBRARY``
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The location of a library called ``<lib_name>`` for use with MPI.
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``MPI_<lang>_LIB_NAMES``
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A :ref:`;-list <CMake Language Lists>` of ``<lib_name>`` that will be added to the include locations of ``<lang>``.
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Usage of mpiexec
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^^^^^^^^^^^^^^^^
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When using ``MPIEXEC_EXECUTABLE`` to execute MPI applications, you should typically
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use all of the ``MPIEXEC_EXECUTABLE`` flags as follows:
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::
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${MPIEXEC_EXECUTABLE} ${MPIEXEC_NUMPROC_FLAG} ${MPIEXEC_MAX_NUMPROCS}
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${MPIEXEC_PREFLAGS} EXECUTABLE ${MPIEXEC_POSTFLAGS} ARGS
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where ``EXECUTABLE`` is the MPI program, and ``ARGS`` are the arguments to
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pass to the MPI program.
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Advanced variables for using MPI
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The module can perform some advanced feature detections upon explicit request.
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**Important notice:** The following checks cannot be performed without *executing* an MPI test program.
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Consider the special considerations for the behavior of :command:`try_run` during cross compilation.
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Moreover, running an MPI program can cause additional issues, like a firewall notification on some systems.
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You should only enable these detections if you absolutely need the information.
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If the following variables are set to true, the respective search will be performed:
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``MPI_DETERMINE_Fortran_CAPABILITIES``
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Determine for all available Fortran bindings what the values of ``MPI_SUBARRAYS_SUPPORTED`` and
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``MPI_ASYNC_PROTECTS_NONBLOCKING`` are and make their values available as ``MPI_Fortran_<binding>_SUBARRAYS``
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and ``MPI_Fortran_<binding>_ASYNCPROT``, where ``<binding>`` is one of ``F77_HEADER``, ``F90_MODULE`` and
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``F08_MODULE``.
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``MPI_DETERMINE_LIBRARY_VERSION``
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For each language, find the output of ``MPI_Get_library_version`` and make it available as ``MPI_<lang>_LIBRARY_VERSION``.
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This information is usually tied to the runtime component of an MPI implementation and might differ depending on ``<lang>``.
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Note that the return value is entirely implementation defined. This information might be used to identify
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the MPI vendor and for example pick the correct one of multiple third party binaries that matches the MPI vendor.
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Backward Compatibility
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^^^^^^^^^^^^^^^^^^^^^^
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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_COMPILER MPI_LIBRARY MPI_EXTRA_LIBRARY
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MPI_COMPILE_FLAGS MPI_INCLUDE_PATH MPI_LINK_FLAGS
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MPI_LIBRARIES
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In new projects, please use the ``MPI_<lang>_XXX`` equivalents.
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Additionally, the following variables are deprecated:
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``MPI_<lang>_COMPILE_FLAGS``
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Use ``MPI_<lang>_COMPILE_OPTIONS`` and ``MPI_<lang>_COMPILE_DEFINITIONS`` instead.
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``MPI_<lang>_INCLUDE_PATH``
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For consumption use ``MPI_<lang>_INCLUDE_DIRS`` and for specifying folders use ``MPI_<lang>_ADDITIONAL_INCLUDE_DIRS`` instead.
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``MPIEXEC``
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Use ``MPIEXEC_EXECUTABLE`` instead.
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#]=======================================================================]
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cmake_policy(PUSH)
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cmake_policy(SET CMP0057 NEW) # if IN_LIST
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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# Generic compiler names
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set(_MPI_C_GENERIC_COMPILER_NAMES mpicc mpcc mpicc_r mpcc_r)
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set(_MPI_CXX_GENERIC_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_GENERIC_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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mpifc)
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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 mpigxx)
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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 on Windows
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if(WIN32)
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list(APPEND _MPI_C_GENERIC_COMPILER_NAMES mpicc.bat)
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list(APPEND _MPI_CXX_GENERIC_COMPILER_NAMES mpicxx.bat)
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list(APPEND _MPI_Fortran_GENERIC_COMPILER_NAMES mpifc.bat)
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# Intel MPI compiler names
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set(_MPI_Intel_C_COMPILER_NAMES mpiicc.bat)
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set(_MPI_Intel_CXX_COMPILER_NAMES mpiicpc.bat)
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set(_MPI_Intel_Fortran_COMPILER_NAMES mpiifort.bat mpif77.bat mpif90.bat)
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# Intel MPI compiler names for MSMPI
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set(_MPI_MSVC_C_COMPILER_NAMES mpicl.bat)
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set(_MPI_MSVC_CXX_COMPILER_NAMES mpicl.bat)
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else()
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# Intel 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++)
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set(_MPI_Intel_Fortran_COMPILER_NAMES mpiifort mpiif95 mpiif90 mpiif77)
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endif()
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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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# Prepend vendor-specific compiler wrappers to the list. If we don't know the compiler,
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# attempt all of them.
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# By attempting vendor-specific compiler names first, we should avoid situations where the compiler wrapper
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# stems from a proprietary MPI and won't know which compiler it's being used for. For instance, Intel MPI
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# controls its settings via the I_MPI_CC environment variables if the generic name is being used.
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# If we know which compiler we're working with, we can use the most specialized wrapper there is in order to
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# pick up the right settings for it.
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foreach (LANG IN ITEMS C CXX Fortran)
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set(_MPI_${LANG}_COMPILER_NAMES "")
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foreach (id IN ITEMS GNU Intel MSVC PGI XL)
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if (NOT CMAKE_${LANG}_COMPILER_ID OR CMAKE_${LANG}_COMPILER_ID STREQUAL id)
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list(APPEND _MPI_${LANG}_COMPILER_NAMES ${_MPI_${id}_${LANG}_COMPILER_NAMES}${MPI_EXECUTABLE_SUFFIX})
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endif()
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unset(_MPI_${id}_${LANG}_COMPILER_NAMES)
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endforeach()
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list(APPEND _MPI_${LANG}_COMPILER_NAMES ${_MPI_${LANG}_GENERIC_COMPILER_NAMES}${MPI_EXECUTABLE_SUFFIX})
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unset(_MPI_${LANG}_GENERIC_COMPILER_NAMES)
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endforeach()
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# Names to try for mpiexec
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# Only mpiexec commands are guaranteed to behave as described in the standard,
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# mpirun commands are not covered by the standard in any way whatsoever.
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# lamexec is the executable for LAM/MPI, srun is for SLURM or Open MPI with SLURM support.
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# srun -n X <executable> is however a valid command, so it behaves 'like' mpiexec.
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set(_MPIEXEC_NAMES_BASE mpiexec mpiexec.hydra mpiexec.mpd mpirun lamexec srun)
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unset(_MPIEXEC_NAMES)
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foreach(_MPIEXEC_NAME IN LISTS _MPIEXEC_NAMES_BASE)
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list(APPEND _MPIEXEC_NAMES "${_MPIEXEC_NAME}${MPI_EXECUTABLE_SUFFIX}")
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endforeach()
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unset(_MPIEXEC_NAMES_BASE)
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function (_MPI_check_compiler LANG QUERY_FLAG OUTPUT_VARIABLE RESULT_VARIABLE)
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if(DEFINED MPI_${LANG}_COMPILER_FLAGS)
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separate_arguments(_MPI_COMPILER_WRAPPER_OPTIONS NATIVE_COMMAND "${MPI_${LANG}_COMPILER_FLAGS}")
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else()
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separate_arguments(_MPI_COMPILER_WRAPPER_OPTIONS NATIVE_COMMAND "${MPI_COMPILER_FLAGS}")
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endif()
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execute_process(
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COMMAND ${MPI_${LANG}_COMPILER} ${_MPI_COMPILER_WRAPPER_OPTIONS} ${QUERY_FLAG}
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OUTPUT_VARIABLE WRAPPER_OUTPUT OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE WRAPPER_OUTPUT ERROR_STRIP_TRAILING_WHITESPACE
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RESULT_VARIABLE WRAPPER_RETURN)
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# Some compiler wrappers will yield spurious zero return values, for example
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# Intel MPI tolerates unknown arguments and if the MPI wrappers loads a shared
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# library that has invalid or missing version information there would be warning
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# messages emitted by ld.so in the compiler output. In either case, we'll treat
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# the output as invalid.
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if("${WRAPPER_OUTPUT}" MATCHES "undefined reference|unrecognized|need to set|no version information available|command not found")
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set(WRAPPER_RETURN 255)
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endif()
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# Ensure that no error output might be passed upwards.
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if(NOT WRAPPER_RETURN EQUAL 0)
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unset(WRAPPER_OUTPUT)
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else()
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# Strip leading whitespace
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string(REGEX REPLACE "^ +" "" WRAPPER_OUTPUT "${WRAPPER_OUTPUT}")
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endif()
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set(${OUTPUT_VARIABLE} "${WRAPPER_OUTPUT}" PARENT_SCOPE)
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set(${RESULT_VARIABLE} "${WRAPPER_RETURN}" PARENT_SCOPE)
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endfunction()
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macro(_MPI_env_set_ifnot VAR VALUE)
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if(NOT DEFINED ENV{${VAR}})
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set(_MPI_${VAR}_WAS_SET FALSE)
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set(ENV{${VAR}} ${${VALUE}})
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else()
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set(_MPI_${VAR}_WAS_SET TRUE)
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endif()
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endmacro()
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macro(_MPI_env_unset_ifnot VAR)
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if(NOT _MPI_${VAR}_WAS_SET)
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unset(ENV{${VAR}})
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endif()
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endmacro()
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function (_MPI_interrogate_compiler LANG)
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unset(MPI_COMPILE_CMDLINE)
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unset(MPI_LINK_CMDLINE)
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unset(MPI_COMPILE_OPTIONS_WORK)
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unset(MPI_COMPILE_DEFINITIONS_WORK)
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unset(MPI_INCLUDE_DIRS_WORK)
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unset(MPI_LINK_FLAGS_WORK)
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unset(MPI_LIB_NAMES_WORK)
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unset(MPI_LIB_FULLPATHS_WORK)
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# Define the MPICH and Intel MPI compiler variables to the compilers set in CMake.
|
|
# It's possible to have a per-compiler configuration in these MPI implementations and
|
|
# a particular MPICH derivate might check compiler interoperability.
|
|
# Intel MPI in particular does this with I_MPI_CHECK_COMPILER.
|
|
file(TO_NATIVE_PATH "${CMAKE_${LANG}_COMPILER}" _MPI_UNDERLAYING_COMPILER)
|
|
# On Windows, the Intel MPI batch scripts can only work with filnames - Full paths will break them.
|
|
# Due to the lack of other MPICH-based wrappers for Visual C++, we may treat this as default.
|
|
if(MSVC)
|
|
get_filename_component(_MPI_UNDERLAYING_COMPILER "${_MPI_UNDERLAYING_COMPILER}" NAME)
|
|
endif()
|
|
if("${LANG}" STREQUAL "C")
|
|
_MPI_env_set_ifnot(I_MPI_CC _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(MPICH_CC _MPI_UNDERLAYING_COMPILER)
|
|
elseif("${LANG}" STREQUAL "CXX")
|
|
_MPI_env_set_ifnot(I_MPI_CXX _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(MPICH_CXX _MPI_UNDERLAYING_COMPILER)
|
|
elseif("${LANG}" STREQUAL "Fortran")
|
|
_MPI_env_set_ifnot(I_MPI_FC _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(MPICH_FC _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(I_MPI_F77 _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(MPICH_F77 _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(I_MPI_F90 _MPI_UNDERLAYING_COMPILER)
|
|
_MPI_env_set_ifnot(MPICH_F90 _MPI_UNDERLAYING_COMPILER)
|
|
endif()
|
|
|
|
# Set these two variables for Intel MPI:
|
|
# - I_MPI_DEBUG_INFO_STRIP: It adds 'objcopy' lines to the compiler output. We support stripping them
|
|
# (see below), but if we can avoid them in the first place, we should.
|
|
# - I_MPI_FORT_BIND: By default Intel MPI makes the C/C++ compiler wrappers link Fortran bindings.
|
|
# This is so that mixed-language code doesn't require additional libraries when linking with mpicc.
|
|
# For our purposes, this makes little sense, since correct MPI usage from CMake already circumvenes this.
|
|
set(_MPI_ENV_VALUE "disable")
|
|
_MPI_env_set_ifnot(I_MPI_DEBUG_INFO_STRIP _MPI_ENV_VALUE)
|
|
_MPI_env_set_ifnot(I_MPI_FORT_BIND _MPI_ENV_VALUE)
|
|
|
|
# Check whether the -showme:compile option works. This indicates that we have either Open MPI
|
|
# or a newer version of LAM/MPI, and implies that -showme:link will also work.
|
|
# Open MPI also supports -show, but separates linker and compiler information
|
|
_MPI_check_compiler(${LANG} "-showme:compile" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
|
|
if (MPI_COMPILER_RETURN EQUAL 0)
|
|
_MPI_check_compiler(${LANG} "-showme:link" MPI_LINK_CMDLINE MPI_COMPILER_RETURN)
|
|
|
|
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
unset(MPI_COMPILE_CMDLINE)
|
|
endif()
|
|
endif()
|
|
|
|
# MPICH and MVAPICH offer -compile-info and -link-info.
|
|
# For modern versions, both do the same as -show. However, for old versions, they do differ
|
|
# when called for mpicxx and mpif90 and it's necessary to use them over -show in order to find the
|
|
# removed MPI C++ bindings.
|
|
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
_MPI_check_compiler(${LANG} "-compile-info" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
|
|
|
|
if (MPI_COMPILER_RETURN EQUAL 0)
|
|
_MPI_check_compiler(${LANG} "-link-info" MPI_LINK_CMDLINE MPI_COMPILER_RETURN)
|
|
|
|
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
unset(MPI_COMPILE_CMDLINE)
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
# MPICH, MVAPICH2 and Intel MPI just use "-show". Open MPI also offers this, but the
|
|
# -showme commands are more specialized.
|
|
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
_MPI_check_compiler(${LANG} "-show" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
|
|
endif()
|
|
|
|
# Older versions of LAM/MPI have "-showme". Open MPI also supports this.
|
|
# Unknown to MPICH, MVAPICH and Intel MPI.
|
|
if (NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
_MPI_check_compiler(${LANG} "-showme" MPI_COMPILE_CMDLINE MPI_COMPILER_RETURN)
|
|
endif()
|
|
|
|
if (MPI_COMPILER_RETURN EQUAL 0 AND DEFINED MPI_COMPILE_CMDLINE)
|
|
# Intel MPI can be run with -compchk or I_MPI_CHECK_COMPILER set to 1.
|
|
# In this case, -show will be prepended with a line to the compiler checker. This is a script that performs
|
|
# compatibility checks and returns a non-zero exit code together with an error if something fails.
|
|
# It has to be called as "compchk.sh <arch> <compiler>". Here, <arch> is one out of 32 (i686), 64 (ia64) or 32e (x86_64).
|
|
# The compiler is identified by filename, and can be either the MPI compiler or the underlying compiler.
|
|
# NOTE: It is vital to run this script while the environment variables are set up, otherwise it can check the wrong compiler.
|
|
if("${MPI_COMPILE_CMDLINE}" MATCHES "^([^\" ]+/compchk.sh|\"[^\"]+/compchk.sh\") +([^ ]+)")
|
|
# Now CMAKE_MATCH_1 contains the path to the compchk.sh file and CMAKE_MATCH_2 the architecture flag.
|
|
unset(COMPILER_CHECKER_OUTPUT)
|
|
execute_process(
|
|
COMMAND ${CMAKE_MATCH_1} ${CMAKE_MATCH_2} ${MPI_${LANG}_COMPILER}
|
|
OUTPUT_VARIABLE COMPILER_CHECKER_OUTPUT OUTPUT_STRIP_TRAILING_WHITESPACE
|
|
ERROR_VARIABLE COMPILER_CHECKER_OUTPUT ERROR_STRIP_TRAILING_WHITESPACE
|
|
RESULT_VARIABLE MPI_COMPILER_RETURN)
|
|
# If it returned a non-zero value, the check below will fail and cause the interrogation to be aborted.
|
|
if(NOT MPI_COMPILER_RETURN EQUAL 0)
|
|
if(NOT MPI_FIND_QUIETLY)
|
|
message(STATUS "Intel MPI compiler check failed: ${COMPILER_CHECKER_OUTPUT}")
|
|
endif()
|
|
else()
|
|
# Since the check passed, we can remove the compchk.sh script.
|
|
string(REGEX REPLACE "^([^\" ]+|\"[^\"]+\")/compchk.sh.*\n" "" MPI_COMPILE_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
# Revert changes to the environment made previously
|
|
if("${LANG}" STREQUAL "C")
|
|
_MPI_env_unset_ifnot(I_MPI_CC)
|
|
_MPI_env_unset_ifnot(MPICH_CC)
|
|
elseif("${LANG}" STREQUAL "CXX")
|
|
_MPI_env_unset_ifnot(I_MPI_CXX)
|
|
_MPI_env_unset_ifnot(MPICH_CXX)
|
|
elseif("${LANG}" STREQUAL "Fortran")
|
|
_MPI_env_unset_ifnot(I_MPI_FC)
|
|
_MPI_env_unset_ifnot(MPICH_FC)
|
|
_MPI_env_unset_ifnot(I_MPI_F77)
|
|
_MPI_env_unset_ifnot(MPICH_F77)
|
|
_MPI_env_unset_ifnot(I_MPI_F90)
|
|
_MPI_env_unset_ifnot(MPICH_F90)
|
|
endif()
|
|
|
|
_MPI_env_unset_ifnot(I_MPI_DEBUG_INFO_STRIP)
|
|
_MPI_env_unset_ifnot(I_MPI_FORT_BIND)
|
|
|
|
if (NOT (MPI_COMPILER_RETURN EQUAL 0) OR NOT (DEFINED MPI_COMPILE_CMDLINE))
|
|
# Cannot interrogate this compiler, so exit.
|
|
set(MPI_${LANG}_WRAPPER_FOUND FALSE PARENT_SCOPE)
|
|
return()
|
|
endif()
|
|
unset(MPI_COMPILER_RETURN)
|
|
|
|
# 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 DEFINED MPI_LINK_CMDLINE)
|
|
set(MPI_LINK_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
endif()
|
|
|
|
# Visual Studio parsers permit each flag prefixed by either / or -.
|
|
# We'll normalize this to the - syntax we use for CMake purposes anyways.
|
|
if(MSVC)
|
|
foreach(_MPI_VARIABLE IN ITEMS COMPILE LINK)
|
|
# The Intel MPI wrappers on Windows prefix their output with some copyright boilerplate.
|
|
# To prevent possible problems, we discard this text before proceeding with any further matching.
|
|
string(REGEX REPLACE "^[^ ]+ for the Intel\\(R\\) MPI Library [^\n]+ for Windows\\*\nCopyright\\(C\\) [^\n]+, Intel Corporation\\. All rights reserved\\.\n\n" ""
|
|
MPI_${_MPI_VARIABLE}_CMDLINE "${MPI_${_MPI_VARIABLE}_CMDLINE}")
|
|
string(REGEX REPLACE "(^| )/" "\\1-" MPI_${_MPI_VARIABLE}_CMDLINE "${MPI_${_MPI_VARIABLE}_CMDLINE}")
|
|
string(REPLACE "-libpath:" "-LIBPATH:" MPI_${_MPI_VARIABLE}_CMDLINE "${MPI_${_MPI_VARIABLE}_CMDLINE}")
|
|
endforeach()
|
|
endif()
|
|
|
|
# For MSVC and cl-compatible compilers, the keyword /link indicates a point after which
|
|
# everything following is passed to the linker. In this case, we drop all prior information
|
|
# from the link line and treat any unknown extra flags as linker flags.
|
|
set(_MPI_FILTERED_LINK_INFORMATION FALSE)
|
|
if(MSVC)
|
|
if(MPI_LINK_CMDLINE MATCHES " -(link|LINK) ")
|
|
string(REGEX REPLACE ".+-(link|LINK) +" "" MPI_LINK_CMDLINE "${MPI_LINK_CMDLINE}")
|
|
set(_MPI_FILTERED_LINK_INFORMATION TRUE)
|
|
endif()
|
|
string(REGEX REPLACE " +-(link|LINK) .+" "" MPI_COMPILE_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
endif()
|
|
|
|
if(UNIX)
|
|
# At this point, we obtained some output from a compiler wrapper that works.
|
|
# We'll now try to parse it into variables with meaning to us.
|
|
if("${LANG}" STREQUAL "Fortran")
|
|
# If MPICH (and derivates) didn't recognize the Fortran compiler include flag during configuration,
|
|
# they'll return a set of three commands, consisting out of a symlink command for mpif.h,
|
|
# the actual compiler command and deletion of the created symlink.
|
|
# Especially with M(VA)PICH-1, this appears to happen erroneously, and therefore we should translate
|
|
# this output into an additional include directory and then drop it from the output.
|
|
if("${MPI_COMPILE_CMDLINE}" MATCHES "^ln -s ([^\" ]+|\"[^\"]+\") mpif.h")
|
|
get_filename_component(MPI_INCLUDE_DIRS_WORK "${CMAKE_MATCH_1}" DIRECTORY)
|
|
string(REGEX REPLACE "^ln -s ([^\" ]+|\"[^\"]+\") mpif.h\n" "" MPI_COMPILE_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
string(REGEX REPLACE "^ln -s ([^\" ]+|\"[^\"]+\") mpif.h\n" "" MPI_LINK_CMDLINE "${MPI_LINK_CMDLINE}")
|
|
string(REGEX REPLACE "\nrm -f mpif.h$" "" MPI_COMPILE_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
string(REGEX REPLACE "\nrm -f mpif.h$" "" MPI_LINK_CMDLINE "${MPI_LINK_CMDLINE}")
|
|
endif()
|
|
endif()
|
|
|
|
# If Intel MPI was configured for static linkage with -static_mpi, the wrapper will by default strip
|
|
# debug information from resulting binaries (see I_MPI_DEBUG_INFO_STRIP).
|
|
# Since we cannot process this information into CMake logic, we need to discard the resulting objcopy
|
|
# commands from the output.
|
|
string(REGEX REPLACE "(^|\n)objcopy[^\n]+(\n|$)" "" MPI_COMPILE_CMDLINE "${MPI_COMPILE_CMDLINE}")
|
|
string(REGEX REPLACE "(^|\n)objcopy[^\n]+(\n|$)" "" MPI_LINK_CMDLINE "${MPI_LINK_CMDLINE}")
|
|
endif()
|
|
|
|
# For Visual C++, extracting compiler options in a generic fashion isn't easy. However, no MPI implementation
|
|
# on Windows seems to require any specific ones, either.
|
|
if(NOT MSVC)
|
|
# Extract compile options from the compile command line.
|
|
string(REGEX MATCHALL "(^| )-f([^\" ]+|\"[^\"]+\")" MPI_ALL_COMPILE_OPTIONS "${MPI_COMPILE_CMDLINE}")
|
|
|
|
foreach(_MPI_COMPILE_OPTION IN LISTS MPI_ALL_COMPILE_OPTIONS)
|
|
string(REGEX REPLACE "^ " "" _MPI_COMPILE_OPTION "${_MPI_COMPILE_OPTION}")
|
|
|
|
# Ignore -fstack-protector directives: These occur on MPICH and MVAPICH when the libraries
|
|
# themselves were built with this flag. However, this flag is unrelated to using MPI, and
|
|
# we won't match the accompanying --param-ssp-size and -Wp,-D_FORTIFY_SOURCE flags and therefore
|
|
# produce inconsistent results with the regularly flags.
|
|
# Similarly, aliasing flags do not belong into our flag array.
|
|
if(NOT "${_MPI_COMPILE_OPTION}" MATCHES "^-f((no-|)(stack-protector|strict-aliasing)|PI[CE]|pi[ce])")
|
|
list(APPEND MPI_COMPILE_OPTIONS_WORK "${_MPI_COMPILE_OPTION}")
|
|
endif()
|
|
endforeach()
|
|
endif()
|
|
|
|
# For GNU-style compilers, it's possible to prefix includes and definitions with certain flags to pass them
|
|
# only to the preprocessor. For CMake purposes, we need to treat, but ignore such scopings.
|
|
# Note that we do not support spaces between the arguments, i.e. -Wp,-I -Wp,/opt/mympi will not be parsed
|
|
# correctly. This form does not seem to occur in any common MPI implementation, however.
|
|
if(NOT MSVC)
|
|
set(_MPI_PREPROCESSOR_FLAG_REGEX "(-Wp,|-Xpreprocessor )?")
|
|
else()
|
|
set(_MPI_PREPROCESSOR_FLAG_REGEX "")
|
|
endif()
|
|
|
|
# Same deal as above, for the definitions.
|
|
string(REGEX MATCHALL "(^| )${_MPI_PREPROCESSOR_FLAG_REGEX}-D *([^\" ]+|\"[^\"]+\")" MPI_ALL_COMPILE_DEFINITIONS "${MPI_COMPILE_CMDLINE}")
|
|
|
|
foreach(_MPI_COMPILE_DEFINITION IN LISTS MPI_ALL_COMPILE_DEFINITIONS)
|
|
string(REGEX REPLACE "^ ?${_MPI_PREPROCESSOR_FLAG_REGEX}-D *" "" _MPI_COMPILE_DEFINITION "${_MPI_COMPILE_DEFINITION}")
|
|
string(REPLACE "\"" "" _MPI_COMPILE_DEFINITION "${_MPI_COMPILE_DEFINITION}")
|
|
if(NOT "${_MPI_COMPILE_DEFINITION}" MATCHES "^_FORTIFY_SOURCE.*")
|
|
list(APPEND MPI_COMPILE_DEFINITIONS_WORK "${_MPI_COMPILE_DEFINITION}")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Extract include paths from compile command line
|
|
string(REGEX MATCHALL "(^| )${_MPI_PREPROCESSOR_FLAG_REGEX}${CMAKE_INCLUDE_FLAG_${LANG}} *([^\" ]+|\"[^\"]+\")"
|
|
MPI_ALL_INCLUDE_PATHS "${MPI_COMPILE_CMDLINE}")
|
|
|
|
# If extracting failed to work, we'll try using -showme:incdirs.
|
|
# Unlike before, we do this without the environment variables set up, but since only MPICH derivates are affected by any of them, and
|
|
# -showme:... is only supported by Open MPI and LAM/MPI, this isn't a concern.
|
|
if (NOT MPI_ALL_INCLUDE_PATHS)
|
|
_MPI_check_compiler(${LANG} "-showme:incdirs" MPI_INCDIRS_CMDLINE MPI_INCDIRS_COMPILER_RETURN)
|
|
if(MPI_INCDIRS_COMPILER_RETURN)
|
|
separate_arguments(MPI_ALL_INCLUDE_PATHS NATIVE_COMMAND "${MPI_INCDIRS_CMDLINE}")
|
|
endif()
|
|
endif()
|
|
|
|
foreach(_MPI_INCLUDE_PATH IN LISTS MPI_ALL_INCLUDE_PATHS)
|
|
string(REGEX REPLACE "^ ?${_MPI_PREPROCESSOR_FLAG_REGEX}${CMAKE_INCLUDE_FLAG_${LANG}} *" "" _MPI_INCLUDE_PATH "${_MPI_INCLUDE_PATH}")
|
|
string(REPLACE "\"" "" _MPI_INCLUDE_PATH "${_MPI_INCLUDE_PATH}")
|
|
get_filename_component(_MPI_INCLUDE_PATH "${_MPI_INCLUDE_PATH}" REALPATH)
|
|
list(APPEND MPI_INCLUDE_DIRS_WORK "${_MPI_INCLUDE_PATH}")
|
|
endforeach()
|
|
|
|
# The next step are linker flags and library directories. Here, we first take the flags given in raw -L or -LIBPATH: syntax.
|
|
string(REGEX MATCHALL "(^| )${CMAKE_LIBRARY_PATH_FLAG} *([^\" ]+|\"[^\"]+\")" MPI_DIRECT_LINK_PATHS "${MPI_LINK_CMDLINE}")
|
|
foreach(_MPI_LPATH IN LISTS MPI_DIRECT_LINK_PATHS)
|
|
string(REGEX REPLACE "(^| )${CMAKE_LIBRARY_PATH_FLAG} *" "" _MPI_LPATH "${_MPI_LPATH}")
|
|
list(APPEND MPI_ALL_LINK_PATHS "${_MPI_LPATH}")
|
|
endforeach()
|
|
|
|
# If the link commandline hasn't been filtered (e.g. when using MSVC and /link), we need to extract the relevant parts first.
|
|
if(NOT _MPI_FILTERED_LINK_INFORMATION)
|
|
string(REGEX MATCHALL "(^| )(-Wl,|-Xlinker +)([^\" ]+|\"[^\"]+\")" MPI_LINK_FLAGS "${MPI_LINK_CMDLINE}")
|
|
|
|
# In this case, we could also find some indirectly given linker paths, e.g. prefixed by -Xlinker or -Wl,
|
|
# Since syntaxes like -Wl,-L -Wl,/my/path/to/lib are also valid, we parse these paths by first removing -Wl, and -Xlinker
|
|
# from the list of filtered flags and then parse the remainder of the output.
|
|
string(REGEX REPLACE "(-Wl,|-Xlinker +)" "" MPI_LINK_FLAGS_RAW "${MPI_LINK_FLAGS}")
|
|
|
|
# Now we can parse the leftover output. Note that spaces can now be handled since the above example would reduce to
|
|
# -L /my/path/to/lib and can be extracted correctly.
|
|
string(REGEX MATCHALL "^(${CMAKE_LIBRARY_PATH_FLAG},? *|--library-path=)([^\" ]+|\"[^\"]+\")"
|
|
MPI_INDIRECT_LINK_PATHS "${MPI_LINK_FLAGS_RAW}")
|
|
|
|
foreach(_MPI_LPATH IN LISTS MPI_INDIRECT_LINK_PATHS)
|
|
string(REGEX REPLACE "^(${CMAKE_LIBRARY_PATH_FLAG},? *|--library-path=)" "" _MPI_LPATH "${_MPI_LPATH}")
|
|
list(APPEND MPI_ALL_LINK_PATHS "${_MPI_LPATH}")
|
|
endforeach()
|
|
|
|
# We need to remove the flags we extracted from the linker flag list now.
|
|
string(REGEX REPLACE "(^| )(-Wl,|-Xlinker +)(${CMAKE_LIBRARY_PATH_FLAG},? *(-Wl,|-Xlinker +)?|--library-path=)([^\" ]+|\"[^\"]+\")" ""
|
|
MPI_LINK_CMDLINE_FILTERED "${MPI_LINK_CMDLINE}")
|
|
|
|
# Some MPI implementations pass on options they themselves were built with. Since -z,noexecstack is a common
|
|
# hardening, we should strip it. In general, the -z options should be undesirable.
|
|
string(REGEX REPLACE "(^| )-Wl,-z(,[^ ]+| +-Wl,[^ ]+)" "" MPI_LINK_CMDLINE_FILTERED "${MPI_LINK_CMDLINE_FILTERED}")
|
|
string(REGEX REPLACE "(^| )-Xlinker +-z +-Xlinker +[^ ]+" "" MPI_LINK_CMDLINE_FILTERED "${MPI_LINK_CMDLINE_FILTERED}")
|
|
|
|
# We only consider options of the form -Wl or -Xlinker:
|
|
string(REGEX MATCHALL "(^| )(-Wl,|-Xlinker +)([^\" ]+|\"[^\"]+\")" MPI_ALL_LINK_FLAGS "${MPI_LINK_CMDLINE_FILTERED}")
|
|
|
|
# As a next step, we assemble the linker flags extracted in a preliminary flags string
|
|
foreach(_MPI_LINK_FLAG IN LISTS MPI_ALL_LINK_FLAGS)
|
|
string(STRIP "${_MPI_LINK_FLAG}" _MPI_LINK_FLAG)
|
|
if (MPI_LINK_FLAGS_WORK)
|
|
string(APPEND MPI_LINK_FLAGS_WORK " ${_MPI_LINK_FLAG}")
|
|
else()
|
|
set(MPI_LINK_FLAGS_WORK "${_MPI_LINK_FLAG}")
|
|
endif()
|
|
endforeach()
|
|
else()
|
|
# In the filtered case, we obtain the link time flags by just stripping the library paths.
|
|
string(REGEX REPLACE "(^| )${CMAKE_LIBRARY_PATH_FLAG} *([^\" ]+|\"[^\"]+\")" "" MPI_LINK_CMDLINE_FILTERED "${MPI_LINK_CMDLINE}")
|
|
endif()
|
|
|
|
# If we failed to extract any linker paths, we'll try using the -showme:libdirs option with the MPI compiler.
|
|
# This will return a list of folders, not a set of flags!
|
|
if (NOT MPI_ALL_LINK_PATHS)
|
|
_MPI_check_compiler(${LANG} "-showme:libdirs" MPI_LIBDIRS_CMDLINE MPI_LIBDIRS_COMPILER_RETURN)
|
|
if(MPI_LIBDIRS_COMPILER_RETURN)
|
|
separate_arguments(MPI_ALL_LINK_PATHS NATIVE_COMMAND "${MPI_LIBDIRS_CMDLINE}")
|
|
endif()
|
|
endif()
|
|
|
|
# We need to remove potential quotes and convert the paths to CMake syntax while resolving them, too.
|
|
foreach(_MPI_LPATH IN LISTS MPI_ALL_LINK_PATHS)
|
|
string(REPLACE "\"" "" _MPI_LPATH "${_MPI_LPATH}")
|
|
get_filename_component(_MPI_LPATH "${_MPI_LPATH}" REALPATH)
|
|
list(APPEND MPI_LINK_DIRECTORIES_WORK "${_MPI_LPATH}")
|
|
endforeach()
|
|
|
|
# Extract the set of libraries to link against from the link command line
|
|
# This only makes sense if CMAKE_LINK_LIBRARY_FLAG is defined, i.e. a -lxxxx syntax is supported by the compiler.
|
|
if(CMAKE_LINK_LIBRARY_FLAG)
|
|
string(REGEX MATCHALL "(^| )${CMAKE_LINK_LIBRARY_FLAG}([^\" ]+|\"[^\"]+\")"
|
|
MPI_LIBNAMES "${MPI_LINK_CMDLINE}")
|
|
|
|
foreach(_MPI_LIB_NAME IN LISTS MPI_LIBNAMES)
|
|
string(REGEX REPLACE "^ ?${CMAKE_LINK_LIBRARY_FLAG}" "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
|
|
string(REPLACE "\"" "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
|
|
list(APPEND MPI_LIB_NAMES_WORK "${_MPI_LIB_NAME}")
|
|
endforeach()
|
|
endif()
|
|
|
|
# Treat linker objects given by full path, for example static libraries, import libraries
|
|
# or shared libraries if there aren't any import libraries in use on the system.
|
|
# Note that we do not consider CMAKE_<TYPE>_LIBRARY_PREFIX intentionally here: The linker will for a given file
|
|
# decide how to link it based on file type, not based on a prefix like 'lib'.
|
|
set(_MPI_LIB_SUFFIX_REGEX "${CMAKE_STATIC_LIBRARY_SUFFIX}")
|
|
if(DEFINED CMAKE_IMPORT_LIBRARY_SUFFIX)
|
|
if(NOT ("${CMAKE_IMPORT_LIBRARY_SUFFIX}" STREQUAL "${CMAKE_STATIC_LIBRARY_SUFFIX}"))
|
|
string(APPEND _MPI_SUFFIX_REGEX "|${CMAKE_IMPORT_LIBRARY_SUFFIX}")
|
|
endif()
|
|
else()
|
|
string(APPEND _MPI_LIB_SUFFIX_REGEX "|${CMAKE_SHARED_LIBRARY_SUFFIX}")
|
|
endif()
|
|
set(_MPI_LIB_NAME_REGEX "(([^\" ]+(${_MPI_LIB_SUFFIX_REGEX}))|(\"[^\"]+(${_MPI_LIB_SUFFIX_REGEX})\"))( +|$)")
|
|
string(REPLACE "." "\\." _MPI_LIB_NAME_REGEX "${_MPI_LIB_NAME_REGEX}")
|
|
|
|
string(REGEX MATCHALL "${_MPI_LIB_NAME_REGEX}" MPI_LIBNAMES "${MPI_LINK_CMDLINE}")
|
|
foreach(_MPI_LIB_NAME IN LISTS MPI_LIBNAMES)
|
|
string(REGEX REPLACE "^ +\"?|\"? +$" "" _MPI_LIB_NAME "${_MPI_LIB_NAME}")
|
|
get_filename_component(_MPI_LIB_PATH "${_MPI_LIB_NAME}" DIRECTORY)
|
|
if(NOT "${_MPI_LIB_PATH}" STREQUAL "")
|
|
list(APPEND MPI_LIB_FULLPATHS_WORK "${_MPI_LIB_NAME}")
|
|
else()
|
|
list(APPEND MPI_LIB_NAMES_WORK "${_MPI_LIB_NAME}")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Save the explicitly given link directories
|
|
set(MPI_LINK_DIRECTORIES_LEFTOVER "${MPI_LINK_DIRECTORIES_WORK}")
|
|
|
|
# An MPI compiler wrapper could have its MPI libraries in the implictly
|
|
# linked directories of the compiler itself.
|
|
if(DEFINED CMAKE_${LANG}_IMPLICIT_LINK_DIRECTORIES)
|
|
list(APPEND MPI_LINK_DIRECTORIES_WORK "${CMAKE_${LANG}_IMPLICIT_LINK_DIRECTORIES}")
|
|
endif()
|
|
|
|
# Determine full path names for all of the libraries that one needs
|
|
# to link against in an MPI program
|
|
unset(MPI_PLAIN_LIB_NAMES_WORK)
|
|
foreach(_MPI_LIB_NAME IN LISTS MPI_LIB_NAMES_WORK)
|
|
get_filename_component(_MPI_PLAIN_LIB_NAME "${_MPI_LIB_NAME}" NAME_WE)
|
|
list(APPEND MPI_PLAIN_LIB_NAMES_WORK "${_MPI_PLAIN_LIB_NAME}")
|
|
find_library(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY
|
|
NAMES "${_MPI_LIB_NAME}" "lib${_MPI_LIB_NAME}"
|
|
HINTS ${MPI_LINK_DIRECTORIES_WORK}
|
|
DOC "Location of the ${_MPI_PLAIN_LIB_NAME} library for MPI"
|
|
)
|
|
mark_as_advanced(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY)
|
|
# Remove the directory from the remainder list.
|
|
if(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY)
|
|
get_filename_component(_MPI_TAKEN_DIRECTORY "${MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY}" DIRECTORY)
|
|
list(REMOVE_ITEM MPI_LINK_DIRECTORIES_LEFTOVER "${_MPI_TAKEN_DIRECTORY}")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Add the link directories given explicitly that we haven't used back as linker directories.
|
|
foreach(_MPI_LINK_DIRECTORY IN LISTS MPI_LINK_DIRECTORIES_LEFTOVER)
|
|
file(TO_NATIVE_PATH "${_MPI_LINK_DIRECTORY}" _MPI_LINK_DIRECTORY_ACTUAL)
|
|
string(FIND "${_MPI_LINK_DIRECTORY_ACTUAL}" " " _MPI_LINK_DIRECTORY_CONTAINS_SPACE)
|
|
if(NOT _MPI_LINK_DIRECTORY_CONTAINS_SPACE EQUAL -1)
|
|
set(_MPI_LINK_DIRECTORY_ACTUAL "\"${_MPI_LINK_DIRECTORY_ACTUAL}\"")
|
|
endif()
|
|
if(MPI_LINK_FLAGS_WORK)
|
|
string(APPEND MPI_LINK_FLAGS_WORK " ${CMAKE_LIBRARY_PATH_FLAG}${_MPI_LINK_DIRECTORY_ACTUAL}")
|
|
else()
|
|
set(MPI_LINK_FLAGS_WORK "${CMAKE_LIBRARY_PATH_FLAG}${_MPI_LINK_DIRECTORY_ACTUAL}")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Deal with the libraries given with full path next
|
|
unset(MPI_DIRECT_LIB_NAMES_WORK)
|
|
foreach(_MPI_LIB_FULLPATH IN LISTS MPI_LIB_FULLPATHS_WORK)
|
|
get_filename_component(_MPI_PLAIN_LIB_NAME "${_MPI_LIB_FULLPATH}" NAME_WE)
|
|
list(APPEND MPI_DIRECT_LIB_NAMES_WORK "${_MPI_PLAIN_LIB_NAME}")
|
|
set(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY "${_MPI_LIB_FULLPATH}" CACHE FILEPATH "Location of the ${_MPI_PLAIN_LIB_NAME} library for MPI")
|
|
mark_as_advanced(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY)
|
|
endforeach()
|
|
# Directly linked objects should be linked first in case some generic linker flags are needed for them.
|
|
if(MPI_DIRECT_LIB_NAMES_WORK)
|
|
set(MPI_PLAIN_LIB_NAMES_WORK "${MPI_DIRECT_LIB_NAMES_WORK};${MPI_PLAIN_LIB_NAMES_WORK}")
|
|
endif()
|
|
|
|
# MPI might require pthread to work. The above mechanism wouldn't detect it, but we need to
|
|
# link it in that case. -lpthread is covered by the normal library treatment on the other hand.
|
|
if("${MPI_COMPILE_CMDLINE}" MATCHES "-pthread")
|
|
list(APPEND MPI_COMPILE_OPTIONS_WORK "-pthread")
|
|
if(MPI_LINK_FLAGS_WORK)
|
|
string(APPEND MPI_LINK_FLAGS_WORK " -pthread")
|
|
else()
|
|
set(MPI_LINK_FLAGS_WORK "-pthread")
|
|
endif()
|
|
endif()
|
|
|
|
if(MPI_${LANG}_EXTRA_COMPILE_DEFINITIONS)
|
|
list(APPEND MPI_COMPILE_DEFINITIONS_WORK "${MPI_${LANG}_EXTRA_COMPILE_DEFINITIONS}")
|
|
endif()
|
|
if(MPI_${LANG}_EXTRA_COMPILE_OPTIONS)
|
|
list(APPEND MPI_COMPILE_OPTIONS_WORK "${MPI_${LANG}_EXTRA_COMPILE_OPTIONS}")
|
|
endif()
|
|
if(MPI_${LANG}_EXTRA_LIB_NAMES)
|
|
list(APPEND MPI_PLAIN_LIB_NAMES_WORK "${MPI_${LANG}_EXTRA_LIB_NAMES}")
|
|
endif()
|
|
|
|
# If we found MPI, set up all of the appropriate cache entries
|
|
if(NOT MPI_${LANG}_COMPILE_OPTIONS)
|
|
set(MPI_${LANG}_COMPILE_OPTIONS ${MPI_COMPILE_OPTIONS_WORK} CACHE STRING "MPI ${LANG} compilation options" FORCE)
|
|
endif()
|
|
if(NOT MPI_${LANG}_COMPILE_DEFINITIONS)
|
|
set(MPI_${LANG}_COMPILE_DEFINITIONS ${MPI_COMPILE_DEFINITIONS_WORK} CACHE STRING "MPI ${LANG} compilation definitions" FORCE)
|
|
endif()
|
|
if(NOT MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS ${MPI_INCLUDE_DIRS_WORK} CACHE STRING "MPI ${LANG} additional include directories" FORCE)
|
|
endif()
|
|
if(NOT MPI_${LANG}_LINK_FLAGS)
|
|
set(MPI_${LANG}_LINK_FLAGS ${MPI_LINK_FLAGS_WORK} CACHE STRING "MPI ${LANG} linker flags" FORCE)
|
|
endif()
|
|
if(NOT MPI_${LANG}_LIB_NAMES)
|
|
set(MPI_${LANG}_LIB_NAMES ${MPI_PLAIN_LIB_NAMES_WORK} CACHE STRING "MPI ${LANG} libraries to link against" FORCE)
|
|
endif()
|
|
set(MPI_${LANG}_WRAPPER_FOUND TRUE PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
function(_MPI_guess_settings LANG)
|
|
set(MPI_GUESS_FOUND FALSE)
|
|
# Currently only MSMPI and MPICH2 on Windows are supported, so we can skip this search if we're not targeting that.
|
|
if(WIN32)
|
|
# MSMPI
|
|
|
|
# The environment variables MSMPI_INC and MSMPILIB32/64 are the only ways of locating the MSMPI_SDK,
|
|
# which is installed separately from the runtime. Thus it's possible to have mpiexec but not MPI headers
|
|
# or import libraries and vice versa.
|
|
if(NOT MPI_GUESS_LIBRARY_NAME OR "${MPI_GUESS_LIBRARY_NAME}" STREQUAL "MSMPI")
|
|
# We first attempt to locate the msmpi.lib. Should be find it, we'll assume that the MPI present is indeed
|
|
# Microsoft MPI.
|
|
if("${CMAKE_SIZEOF_VOID_P}" EQUAL 8)
|
|
set(MPI_MSMPI_LIB_PATH "$ENV{MSMPI_LIB64}")
|
|
set(MPI_MSMPI_INC_PATH_EXTRA "$ENV{MSMPI_INC}/x64")
|
|
else()
|
|
set(MPI_MSMPI_LIB_PATH "$ENV{MSMPI_LIB32}")
|
|
set(MPI_MSMPI_INC_PATH_EXTRA "$ENV{MSMPI_INC}/x86")
|
|
endif()
|
|
|
|
find_library(MPI_msmpi_LIBRARY
|
|
NAMES msmpi
|
|
HINTS ${MPI_MSMPI_LIB_PATH}
|
|
DOC "Location of the msmpi library for Microsoft MPI")
|
|
mark_as_advanced(MPI_msmpi_LIBRARY)
|
|
|
|
if(MPI_msmpi_LIBRARY)
|
|
# Next, we attempt to locate the MPI header. Note that for Fortran we know that mpif.h is a way
|
|
# MSMPI can be used and therefore that header has to be present.
|
|
if(NOT MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
get_filename_component(MPI_MSMPI_INC_DIR "$ENV{MSMPI_INC}" REALPATH)
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS "${MPI_MSMPI_INC_DIR}" CACHE STRING "MPI ${LANG} additional include directories" FORCE)
|
|
unset(MPI_MSMPI_INC_DIR)
|
|
endif()
|
|
|
|
# For MSMPI, one can compile the MPI module by building the mpi.f90 shipped with the MSMPI SDK,
|
|
# thus it might be present or provided by the user. Figuring out which is supported is done later on.
|
|
# The PGI Fortran compiler for instance ships a prebuilt set of modules in its own include folder.
|
|
# Should a user be employing PGI or have built its own set and provided it via cache variables, the
|
|
# splitting routine would have located the module files.
|
|
|
|
# For C and C++, we're done here (MSMPI does not ship the MPI-2 C++ bindings) - however, for Fortran
|
|
# we need some extra library to glue Fortran support together:
|
|
# MSMPI ships 2-4 Fortran libraries, each for different Fortran compiler behaviors. The library names
|
|
# ending with a c are using the cdecl calling convention, whereas those ending with an s are for Fortran
|
|
# implementations using stdcall. Therefore, the 64-bit MSMPI only ships those ending in 'c', whereas the 32-bit
|
|
# has both variants available.
|
|
# The second difference is the last but one letter, if it's an e(nd), the length of a string argument is
|
|
# passed by the Fortran compiler after all other arguments on the parameter list, if it's an m(ixed),
|
|
# it's passed immediately after the string address.
|
|
|
|
# To summarize:
|
|
# - msmpifec: CHARACTER length passed after the parameter list and using cdecl calling convention
|
|
# - msmpifmc: CHARACTER length passed directly after string address and using cdecl calling convention
|
|
# - msmpifes: CHARACTER length passed after the parameter list and using stdcall calling convention
|
|
# - msmpifms: CHARACTER length passed directly after string address and using stdcall calling convention
|
|
# 32-bit MSMPI ships all four libraries, 64-bit MSMPI ships only the first two.
|
|
|
|
# As is, Intel Fortran and PGI Fortran both use the 'ec' variant of the calling convention, whereas
|
|
# the old Compaq Visual Fortran compiler defaulted to the 'ms' version. It's possible to make Intel Fortran
|
|
# use the CVF calling convention using /iface:cvf, but we assume - and this is also assumed in FortranCInterface -
|
|
# this isn't the case. It's also possible to make CVF use the 'ec' variant, using /iface=(cref,nomixed_str_len_arg).
|
|
|
|
# Our strategy is now to locate all libraries, but enter msmpifec into the LIB_NAMES array.
|
|
# Should this not be adequate it's a straightforward way for a user to change the LIB_NAMES array and
|
|
# have his library found. Still, this should not be necessary outside of exceptional cases, as reasoned.
|
|
if ("${LANG}" STREQUAL "Fortran")
|
|
set(MPI_MSMPI_CALLINGCONVS c)
|
|
if("${CMAKE_SIZEOF_VOID_P}" EQUAL 4)
|
|
list(APPEND MPI_MSMPI_CALLINGCONVS s)
|
|
endif()
|
|
foreach(mpistrlenpos IN ITEMS e m)
|
|
foreach(mpicallingconv IN LISTS MPI_MSMPI_CALLINGCONVS)
|
|
find_library(MPI_msmpif${mpistrlenpos}${mpicallingconv}_LIBRARY
|
|
NAMES msmpif${mpistrlenpos}${mpicallingconv}
|
|
HINTS "${MPI_MSMPI_LIB_PATH}"
|
|
DOC "Location of the msmpi${mpistrlenpos}${mpicallingconv} library for Microsoft MPI")
|
|
mark_as_advanced(MPI_msmpif${mpistrlenpos}${mpicallingconv}_LIBRARY)
|
|
endforeach()
|
|
endforeach()
|
|
if(NOT MPI_${LANG}_LIB_NAMES)
|
|
set(MPI_${LANG}_LIB_NAMES "msmpi;msmpifec" CACHE STRING "MPI ${LANG} libraries to link against" FORCE)
|
|
endif()
|
|
|
|
# At this point we're *not* done. MSMPI requires an additional include file for Fortran giving the value
|
|
# of MPI_AINT. This file is called mpifptr.h located in the x64 and x86 subfolders, respectively.
|
|
find_path(MPI_mpifptr_INCLUDE_DIR
|
|
NAMES "mpifptr.h"
|
|
HINTS "${MPI_MSMPI_INC_PATH_EXTRA}"
|
|
DOC "Location of the mpifptr.h extra header for Microsoft MPI")
|
|
if(NOT MPI_${LANG}_ADDITIONAL_INCLUDE_VARS)
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_VARS "mpifptr" CACHE STRING "MPI ${LANG} additional include directory variables, given in the form MPI_<name>_INCLUDE_DIR." FORCE)
|
|
endif()
|
|
mark_as_advanced(MPI_${LANG}_ADDITIONAL_INCLUDE_VARS MPI_mpifptr_INCLUDE_DIR)
|
|
else()
|
|
if(NOT MPI_${LANG}_LIB_NAMES)
|
|
set(MPI_${LANG}_LIB_NAMES "msmpi" CACHE STRING "MPI ${LANG} libraries to link against" FORCE)
|
|
endif()
|
|
endif()
|
|
mark_as_advanced(MPI_${LANG}_LIB_NAMES)
|
|
set(MPI_GUESS_FOUND TRUE)
|
|
|
|
if(_MPIEXEC_NOT_GIVEN)
|
|
unset(MPIEXEC_EXECUTABLE CACHE)
|
|
endif()
|
|
|
|
find_program(MPIEXEC_EXECUTABLE
|
|
NAMES mpiexec
|
|
HINTS $ENV{MSMPI_BIN} "[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\MPI;InstallRoot]/Bin"
|
|
DOC "Executable for running MPI programs.")
|
|
endif()
|
|
endif()
|
|
|
|
# At this point there's not many MPIs that we could still consider.
|
|
# OpenMPI 1.6.x and below supported Windows, but these ship compiler wrappers that still work.
|
|
# The only other relevant MPI implementation without a wrapper is MPICH2, which had Windows support in 1.4.1p1 and older.
|
|
if(NOT MPI_GUESS_FOUND AND (NOT MPI_GUESS_LIBRARY_NAME OR "${MPI_GUESS_LIBRARY_NAME}" STREQUAL "MPICH2"))
|
|
set(MPI_MPICH_PREFIX_PATHS
|
|
"$ENV{ProgramW6432}/MPICH2/lib"
|
|
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH\\SMPD;binary]/../lib"
|
|
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH2;Path]/lib"
|
|
)
|
|
|
|
# All of C, C++ and Fortran will need mpi.lib, so we'll look for this first
|
|
find_library(MPI_mpi_LIBRARY
|
|
NAMES mpi
|
|
HINTS ${MPI_MPICH_PREFIX_PATHS})
|
|
mark_as_advanced(MPI_mpi_LIBRARY)
|
|
# If we found mpi.lib, we detect the rest of MPICH2
|
|
if(MPI_mpi_LIBRARY)
|
|
set(MPI_MPICH_LIB_NAMES "mpi")
|
|
# If MPI-2 C++ bindings are requested, we need to locate cxx.lib as well.
|
|
# Otherwise, MPICH_SKIP_MPICXX will be defined and these bindings aren't needed.
|
|
if("${LANG}" STREQUAL "CXX" AND NOT MPI_CXX_SKIP_MPICXX)
|
|
find_library(MPI_cxx_LIBRARY
|
|
NAMES cxx
|
|
HINTS ${MPI_MPICH_PREFIX_PATHS})
|
|
mark_as_advanced(MPI_cxx_LIBRARY)
|
|
list(APPEND MPI_MPICH_LIB_NAMES "cxx")
|
|
# For Fortran, MPICH2 provides three different libraries:
|
|
# fmpich2.lib which uses uppercase symbols and cdecl,
|
|
# fmpich2s.lib which uses uppercase symbols and stdcall (32-bit only),
|
|
# fmpich2g.lib which uses lowercase symbols with double underscores and cdecl.
|
|
# fmpich2s.lib would be useful for Compaq Visual Fortran, fmpich2g.lib has to be used with GNU g77 and is also
|
|
# provided in the form of an .a archive for MinGW and Cygwin. From our perspective, fmpich2.lib is the only one
|
|
# we need to try, and if it doesn't work with the given Fortran compiler we'd find out later on during validation
|
|
elseif("${LANG}" STREQUAL "Fortran")
|
|
find_library(MPI_fmpich2_LIBRARY
|
|
NAMES fmpich2
|
|
HINTS ${MPI_MPICH_PREFIX_PATHS})
|
|
find_library(MPI_fmpich2s_LIBRARY
|
|
NAMES fmpich2s
|
|
HINTS ${MPI_MPICH_PREFIX_PATHS})
|
|
find_library(MPI_fmpich2g_LIBRARY
|
|
NAMES fmpich2g
|
|
HINTS ${MPI_MPICH_PREFIX_PATHS})
|
|
mark_as_advanced(MPI_fmpich2_LIBRARY MPI_fmpich2s_LIBRARY MPI_fmpich2g_LIBRARY)
|
|
list(APPEND MPI_MPICH_LIB_NAMES "fmpich2")
|
|
endif()
|
|
|
|
if(NOT MPI_${LANG}_LIB_NAMES)
|
|
set(MPI_${LANG}_LIB_NAMES "${MPI_MPICH_LIB_NAMES}" CACHE STRING "MPI ${LANG} libraries to link against" FORCE)
|
|
endif()
|
|
unset(MPI_MPICH_LIB_NAMES)
|
|
|
|
if(NOT MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
# For MPICH2, the include folder would be in ../include relative to the library folder.
|
|
get_filename_component(MPI_MPICH_ROOT_DIR "${MPI_mpi_LIBRARY}" DIRECTORY)
|
|
get_filename_component(MPI_MPICH_ROOT_DIR "${MPI_MPICH_ROOT_DIR}" DIRECTORY)
|
|
if(IS_DIRECTORY "${MPI_MPICH_ROOT_DIR}/include")
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS "${MPI_MPICH_ROOT_DIR}/include" CACHE STRING "MPI ${LANG} additional include directory variables, given in the form MPI_<name>_INCLUDE_DIR." FORCE)
|
|
endif()
|
|
unset(MPI_MPICH_ROOT_DIR)
|
|
endif()
|
|
set(MPI_GUESS_FOUND TRUE)
|
|
|
|
if(_MPIEXEC_NOT_GIVEN)
|
|
unset(MPIEXEC_EXECUTABLE CACHE)
|
|
endif()
|
|
|
|
find_program(MPIEXEC_EXECUTABLE
|
|
NAMES ${_MPIEXEC_NAMES}
|
|
HINTS "$ENV{ProgramW6432}/MPICH2/bin"
|
|
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH\\SMPD;binary]"
|
|
"[HKEY_LOCAL_MACHINE\\SOFTWARE\\MPICH2;Path]/bin"
|
|
DOC "Executable for running MPI programs.")
|
|
endif()
|
|
unset(MPI_MPICH_PREFIX_PATHS)
|
|
endif()
|
|
endif()
|
|
set(MPI_${LANG}_GUESS_FOUND "${MPI_GUESS_FOUND}" PARENT_SCOPE)
|
|
endfunction()
|
|
|
|
function(_MPI_adjust_compile_definitions LANG)
|
|
if("${LANG}" STREQUAL "CXX")
|
|
# To disable the C++ bindings, we need to pass some definitions since the mpi.h header has to deal with both C and C++
|
|
# bindings in MPI-2.
|
|
if(MPI_CXX_SKIP_MPICXX AND NOT MPI_${LANG}_COMPILE_DEFINITIONS MATCHES "SKIP_MPICXX")
|
|
# MPICH_SKIP_MPICXX is being used in MPICH and derivatives like MVAPICH or Intel MPI
|
|
# OMPI_SKIP_MPICXX is being used in Open MPI
|
|
# _MPICC_H is being used for IBM Platform MPI
|
|
list(APPEND MPI_${LANG}_COMPILE_DEFINITIONS "MPICH_SKIP_MPICXX" "OMPI_SKIP_MPICXX" "_MPICC_H")
|
|
set(MPI_${LANG}_COMPILE_DEFINITIONS "${MPI_${LANG}_COMPILE_DEFINITIONS}" CACHE STRING "MPI ${LANG} compilation definitions" FORCE)
|
|
endif()
|
|
endif()
|
|
endfunction()
|
|
|
|
macro(_MPI_assemble_libraries LANG)
|
|
set(MPI_${LANG}_LIBRARIES "")
|
|
# Only for libraries do we need to check whether the compiler's linking stage is separate.
|
|
if(NOT "${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}" OR NOT MPI_${LANG}_WORKS_IMPLICIT)
|
|
foreach(mpilib IN LISTS MPI_${LANG}_LIB_NAMES)
|
|
list(APPEND MPI_${LANG}_LIBRARIES ${MPI_${mpilib}_LIBRARY})
|
|
endforeach()
|
|
endif()
|
|
endmacro()
|
|
|
|
macro(_MPI_assemble_include_dirs LANG)
|
|
if("${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}")
|
|
set(MPI_${LANG}_INCLUDE_DIRS "")
|
|
else()
|
|
set(MPI_${LANG}_INCLUDE_DIRS "${MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS}")
|
|
if("${LANG}" MATCHES "(C|CXX)")
|
|
if(MPI_${LANG}_HEADER_DIR)
|
|
list(APPEND MPI_${LANG}_INCLUDE_DIRS "${MPI_${LANG}_HEADER_DIR}")
|
|
endif()
|
|
else() # Fortran
|
|
if(MPI_${LANG}_F77_HEADER_DIR)
|
|
list(APPEND MPI_${LANG}_INCLUDE_DIRS "${MPI_${LANG}_F77_HEADER_DIR}")
|
|
endif()
|
|
if(MPI_${LANG}_MODULE_DIR AND NOT "${MPI_${LANG}_MODULE_DIR}" IN_LIST MPI_${LANG}_INCLUDE_DIRS)
|
|
list(APPEND MPI_${LANG}_INCLUDE_DIRS "${MPI_${LANG}_MODULE_DIR}")
|
|
endif()
|
|
endif()
|
|
if(MPI_${LANG}_ADDITIONAL_INCLUDE_VARS)
|
|
foreach(MPI_ADDITIONAL_INC_DIR IN LISTS MPI_${LANG}_ADDITIONAL_INCLUDE_VARS)
|
|
list(APPEND MPI_${LANG}_INCLUDE_DIRS "${MPI_${MPI_ADDITIONAL_INC_DIR}_INCLUDE_DIR}")
|
|
endforeach()
|
|
endif()
|
|
endif()
|
|
endmacro()
|
|
|
|
function(_MPI_split_include_dirs LANG)
|
|
if("${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}")
|
|
return()
|
|
endif()
|
|
# Backwards compatibility: Search INCLUDE_PATH if given.
|
|
if(MPI_${LANG}_INCLUDE_PATH)
|
|
list(APPEND MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS "${MPI_${LANG}_INCLUDE_PATH}")
|
|
endif()
|
|
|
|
# We try to find the headers/modules among those paths (and system paths)
|
|
# For C/C++, we just need to have a look for mpi.h.
|
|
if("${LANG}" MATCHES "(C|CXX)")
|
|
find_path(MPI_${LANG}_HEADER_DIR "mpi.h"
|
|
HINTS ${MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS}
|
|
)
|
|
mark_as_advanced(MPI_${LANG}_HEADER_DIR)
|
|
if(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
list(REMOVE_ITEM MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS "${MPI_${LANG}_HEADER_DIR}")
|
|
endif()
|
|
# Fortran is more complicated here: An implementation could provide
|
|
# any of the Fortran 77/90/2008 APIs for MPI. For example, MSMPI
|
|
# only provides Fortran 77 and - if mpi.f90 is built - potentially
|
|
# a Fortran 90 module.
|
|
elseif("${LANG}" STREQUAL "Fortran")
|
|
find_path(MPI_${LANG}_F77_HEADER_DIR "mpif.h"
|
|
HINTS ${MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS}
|
|
)
|
|
find_path(MPI_${LANG}_MODULE_DIR
|
|
NAMES "mpi.mod" "mpi_f08.mod"
|
|
HINTS ${MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS}
|
|
)
|
|
if(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
list(REMOVE_ITEM MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS
|
|
"${MPI_${LANG}_F77_HEADER_DIR}"
|
|
"${MPI_${LANG}_MODULE_DIR}"
|
|
)
|
|
endif()
|
|
mark_as_advanced(MPI_${LANG}_F77_HEADER_DIR MPI_${LANG}_MODULE_DIR)
|
|
endif()
|
|
# Remove duplicates and default system directories from the list.
|
|
if(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
list(REMOVE_DUPLICATES MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)
|
|
foreach(MPI_IMPLICIT_INC_DIR IN LISTS CMAKE_${LANG}_IMPLICIT_LINK_DIRECTORIES)
|
|
list(REMOVE_ITEM MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS ${MPI_IMPLICIT_INC_DIR})
|
|
endforeach()
|
|
endif()
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS ${MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS} CACHE STRING "MPI ${LANG} additional include directories" FORCE)
|
|
endfunction()
|
|
|
|
macro(_MPI_create_imported_target LANG)
|
|
if(NOT TARGET MPI::MPI_${LANG})
|
|
add_library(MPI::MPI_${LANG} INTERFACE IMPORTED)
|
|
endif()
|
|
|
|
# When this is consumed for compiling CUDA, use '-Xcompiler' to wrap '-pthread'.
|
|
string(REPLACE "-pthread" "$<$<COMPILE_LANGUAGE:CUDA>:SHELL:-Xcompiler >-pthread"
|
|
_MPI_${LANG}_COMPILE_OPTIONS "${MPI_${LANG}_COMPILE_OPTIONS}")
|
|
set_property(TARGET MPI::MPI_${LANG} PROPERTY INTERFACE_COMPILE_OPTIONS "${_MPI_${LANG}_COMPILE_OPTIONS}")
|
|
unset(_MPI_${LANG}_COMPILE_OPTIONS)
|
|
|
|
set_property(TARGET MPI::MPI_${LANG} PROPERTY INTERFACE_COMPILE_DEFINITIONS "${MPI_${LANG}_COMPILE_DEFINITIONS}")
|
|
|
|
set_property(TARGET MPI::MPI_${LANG} PROPERTY INTERFACE_LINK_LIBRARIES "")
|
|
if(MPI_${LANG}_LINK_FLAGS)
|
|
set_property(TARGET MPI::MPI_${LANG} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "${MPI_${LANG}_LINK_FLAGS}")
|
|
endif()
|
|
# If the compiler links MPI implicitly, no libraries will be found as they're contained within
|
|
# CMAKE_<LANG>_IMPLICIT_LINK_LIBRARIES already.
|
|
if(MPI_${LANG}_LIBRARIES)
|
|
set_property(TARGET MPI::MPI_${LANG} APPEND PROPERTY INTERFACE_LINK_LIBRARIES "${MPI_${LANG}_LIBRARIES}")
|
|
endif()
|
|
# Given the new design of FindMPI, INCLUDE_DIRS will always be located, even under implicit linking.
|
|
set_property(TARGET MPI::MPI_${LANG} PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${MPI_${LANG}_INCLUDE_DIRS}")
|
|
endmacro()
|
|
|
|
function(_MPI_try_staged_settings LANG MPI_TEST_FILE_NAME MODE RUN_BINARY)
|
|
set(WORK_DIR "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindMPI")
|
|
set(SRC_DIR "${CMAKE_ROOT}/Modules/FindMPI")
|
|
set(BIN_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindMPI/${MPI_TEST_FILE_NAME}_${LANG}.bin")
|
|
unset(MPI_TEST_COMPILE_DEFINITIONS)
|
|
if("${LANG}" STREQUAL "Fortran")
|
|
if("${MODE}" STREQUAL "F90_MODULE")
|
|
set(MPI_Fortran_INCLUDE_LINE "use mpi\n implicit none")
|
|
elseif("${MODE}" STREQUAL "F08_MODULE")
|
|
set(MPI_Fortran_INCLUDE_LINE "use mpi_f08\n implicit none")
|
|
else() # F77 header
|
|
set(MPI_Fortran_INCLUDE_LINE "implicit none\n include 'mpif.h'")
|
|
endif()
|
|
configure_file("${SRC_DIR}/${MPI_TEST_FILE_NAME}.f90.in" "${WORK_DIR}/${MPI_TEST_FILE_NAME}.f90" @ONLY)
|
|
set(MPI_TEST_SOURCE_FILE "${WORK_DIR}/${MPI_TEST_FILE_NAME}.f90")
|
|
elseif("${LANG}" STREQUAL "CXX")
|
|
configure_file("${SRC_DIR}/${MPI_TEST_FILE_NAME}.c" "${WORK_DIR}/${MPI_TEST_FILE_NAME}.cpp" COPYONLY)
|
|
set(MPI_TEST_SOURCE_FILE "${WORK_DIR}/${MPI_TEST_FILE_NAME}.cpp")
|
|
if("${MODE}" STREQUAL "TEST_MPICXX")
|
|
set(MPI_TEST_COMPILE_DEFINITIONS TEST_MPI_MPICXX)
|
|
endif()
|
|
else() # C
|
|
set(MPI_TEST_SOURCE_FILE "${SRC_DIR}/${MPI_TEST_FILE_NAME}.c")
|
|
endif()
|
|
if(RUN_BINARY)
|
|
try_run(MPI_RUN_RESULT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE} MPI_RESULT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE}
|
|
"${CMAKE_BINARY_DIR}" SOURCES "${MPI_TEST_SOURCE_FILE}"
|
|
COMPILE_DEFINITIONS ${MPI_TEST_COMPILE_DEFINITIONS}
|
|
LINK_LIBRARIES MPI::MPI_${LANG}
|
|
RUN_OUTPUT_VARIABLE MPI_RUN_OUTPUT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE})
|
|
set(MPI_RUN_OUTPUT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE} "${MPI_RUN_OUTPUT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE}}" PARENT_SCOPE)
|
|
else()
|
|
try_compile(MPI_RESULT_${LANG}_${MPI_TEST_FILE_NAME}_${MODE}
|
|
"${CMAKE_BINARY_DIR}" SOURCES "${MPI_TEST_SOURCE_FILE}"
|
|
COMPILE_DEFINITIONS ${MPI_TEST_COMPILE_DEFINITIONS}
|
|
LINK_LIBRARIES MPI::MPI_${LANG}
|
|
COPY_FILE "${BIN_FILE}")
|
|
endif()
|
|
endfunction()
|
|
|
|
macro(_MPI_check_lang_works LANG)
|
|
# For Fortran we may have by the MPI-3 standard an implementation that provides:
|
|
# - the mpi_f08 module
|
|
# - *both*, the mpi module and 'mpif.h'
|
|
# Since older MPI standards (MPI-1) did not define anything but 'mpif.h', we need to check all three individually.
|
|
if( NOT MPI_${LANG}_WORKS )
|
|
if("${LANG}" STREQUAL "Fortran")
|
|
set(MPI_Fortran_INTEGER_LINE "(kind=MPI_INTEGER_KIND)")
|
|
_MPI_try_staged_settings(${LANG} test_mpi F77_HEADER FALSE)
|
|
_MPI_try_staged_settings(${LANG} test_mpi F90_MODULE FALSE)
|
|
_MPI_try_staged_settings(${LANG} test_mpi F08_MODULE FALSE)
|
|
|
|
set(MPI_${LANG}_WORKS FALSE)
|
|
|
|
foreach(mpimethod IN ITEMS F77_HEADER F08_MODULE F90_MODULE)
|
|
if(MPI_RESULT_${LANG}_test_mpi_${mpimethod})
|
|
set(MPI_${LANG}_WORKS TRUE)
|
|
set(MPI_${LANG}_HAVE_${mpimethod} TRUE)
|
|
else()
|
|
set(MPI_${LANG}_HAVE_${mpimethod} FALSE)
|
|
endif()
|
|
endforeach()
|
|
# MPI-1 versions had no MPI_INTGER_KIND defined, so we need to try without it.
|
|
# However, MPI-1 also did not define the Fortran 90 and 08 modules, so we only try the F77 header.
|
|
unset(MPI_Fortran_INTEGER_LINE)
|
|
if(NOT MPI_${LANG}_WORKS)
|
|
_MPI_try_staged_settings(${LANG} test_mpi F77_HEADER_NOKIND FALSE)
|
|
if(MPI_RESULT_${LANG}_test_mpi_F77_HEADER_NOKIND)
|
|
set(MPI_${LANG}_WORKS TRUE)
|
|
set(MPI_${LANG}_HAVE_F77_HEADER TRUE)
|
|
endif()
|
|
endif()
|
|
else()
|
|
_MPI_try_staged_settings(${LANG} test_mpi normal FALSE)
|
|
# If 'test_mpi' built correctly, we've found valid MPI settings. There might not be MPI-2 C++ support, but there can't
|
|
# be MPI-2 C++ support without the C bindings being present, so checking for them is sufficient.
|
|
set(MPI_${LANG}_WORKS "${MPI_RESULT_${LANG}_test_mpi_normal}")
|
|
endif()
|
|
endif()
|
|
endmacro()
|
|
|
|
# Some systems install various MPI implementations in separate folders in some MPI prefix
|
|
# This macro enumerates all such subfolders and adds them to the list of hints that will be searched.
|
|
macro(MPI_search_mpi_prefix_folder PREFIX_FOLDER)
|
|
if(EXISTS "${PREFIX_FOLDER}")
|
|
file(GLOB _MPI_folder_children RELATIVE "${PREFIX_FOLDER}" "${PREFIX_FOLDER}/*")
|
|
foreach(_MPI_folder_child IN LISTS _MPI_folder_children)
|
|
if(IS_DIRECTORY "${PREFIX_FOLDER}/${_MPI_folder_child}")
|
|
list(APPEND MPI_HINT_DIRS "${PREFIX_FOLDER}/${_MPI_folder_child}")
|
|
endif()
|
|
endforeach()
|
|
endif()
|
|
endmacro()
|
|
|
|
set(MPI_HINT_DIRS ${MPI_HOME} $ENV{MPI_HOME} $ENV{I_MPI_ROOT})
|
|
if("${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "Linux")
|
|
# SUSE Linux Enterprise Server stores its MPI implementations under /usr/lib64/mpi/gcc/<name>
|
|
# We enumerate the subfolders and append each as a prefix
|
|
MPI_search_mpi_prefix_folder("/usr/lib64/mpi/gcc")
|
|
elseif("${CMAKE_HOST_SYSTEM_NAME}" STREQUAL "FreeBSD")
|
|
# FreeBSD ships mpich under the normal system paths - but available openmpi implementations
|
|
# will be found in /usr/local/mpi/<name>
|
|
MPI_search_mpi_prefix_folder("/usr/local/mpi")
|
|
endif()
|
|
|
|
# Most MPI distributions have some form of mpiexec or mpirun which gives us something we can look for.
|
|
# The MPI standard does not mandate the existence of either, but instead only makes requirements if a distribution
|
|
# ships an mpiexec program (mpirun executables are not regulated by the standard).
|
|
|
|
# We defer searching for mpiexec binaries belonging to guesses until later. By doing so, mismatches between mpiexec
|
|
# and the MPI we found should be reduced.
|
|
if(NOT MPIEXEC_EXECUTABLE)
|
|
set(_MPIEXEC_NOT_GIVEN TRUE)
|
|
else()
|
|
set(_MPIEXEC_NOT_GIVEN FALSE)
|
|
endif()
|
|
|
|
find_program(MPIEXEC_EXECUTABLE
|
|
NAMES ${_MPIEXEC_NAMES}
|
|
PATH_SUFFIXES bin sbin
|
|
HINTS ${MPI_HINT_DIRS}
|
|
DOC "Executable for running MPI programs.")
|
|
|
|
# call get_filename_component twice to remove mpiexec and the directory it exists in (typically bin).
|
|
# This gives us a fairly reliable base directory to search for /bin /lib and /include from.
|
|
get_filename_component(_MPI_BASE_DIR "${MPIEXEC_EXECUTABLE}" PATH)
|
|
get_filename_component(_MPI_BASE_DIR "${_MPI_BASE_DIR}" PATH)
|
|
|
|
# According to the MPI standard, section 8.8 -n is a guaranteed, and the only guaranteed way to
|
|
# launch an MPI process using mpiexec if such a program exists.
|
|
set(MPIEXEC_NUMPROC_FLAG "-n" CACHE STRING "Flag used by MPI to specify the number of processes for mpiexec; the next option will be the number of processes.")
|
|
set(MPIEXEC_PREFLAGS "" CACHE STRING "These flags will be directly before the executable that is being run by mpiexec.")
|
|
set(MPIEXEC_POSTFLAGS "" CACHE STRING "These flags will be placed after all flags passed to mpiexec.")
|
|
|
|
# Set the number of processes to the physical processor count
|
|
cmake_host_system_information(RESULT _MPIEXEC_NUMPROCS QUERY NUMBER_OF_PHYSICAL_CORES)
|
|
set(MPIEXEC_MAX_NUMPROCS "${_MPIEXEC_NUMPROCS}" CACHE STRING "Maximum number of processors available to run MPI applications.")
|
|
unset(_MPIEXEC_NUMPROCS)
|
|
mark_as_advanced(MPIEXEC_EXECUTABLE MPIEXEC_NUMPROC_FLAG MPIEXEC_PREFLAGS MPIEXEC_POSTFLAGS MPIEXEC_MAX_NUMPROCS)
|
|
|
|
#=============================================================================
|
|
# Backward compatibility input hacks. Propagate the FindMPI hints to C and
|
|
# CXX if the respective new versions are not defined. Translate the old
|
|
# MPI_LIBRARY and MPI_EXTRA_LIBRARY to respective MPI_${LANG}_LIBRARIES.
|
|
#
|
|
# Once we find the new variables, we translate them back into their old
|
|
# equivalents below.
|
|
if(NOT MPI_IGNORE_LEGACY_VARIABLES)
|
|
foreach (LANG IN ITEMS C CXX)
|
|
# Old input variables.
|
|
set(_MPI_OLD_INPUT_VARS COMPILER COMPILE_FLAGS INCLUDE_PATH LINK_FLAGS)
|
|
|
|
# Set new vars based on their old equivalents, if the new versions are not already set.
|
|
foreach (var ${_MPI_OLD_INPUT_VARS})
|
|
if (NOT MPI_${LANG}_${var} AND MPI_${var})
|
|
set(MPI_${LANG}_${var} "${MPI_${var}}")
|
|
endif()
|
|
endforeach()
|
|
|
|
# Chop the old compile flags into options and definitions
|
|
|
|
unset(MPI_${LANG}_EXTRA_COMPILE_DEFINITIONS)
|
|
unset(MPI_${LANG}_EXTRA_COMPILE_OPTIONS)
|
|
if(MPI_${LANG}_COMPILE_FLAGS)
|
|
separate_arguments(MPI_SEPARATE_FLAGS NATIVE_COMMAND "${MPI_${LANG}_COMPILE_FLAGS}")
|
|
foreach(_MPI_FLAG IN LISTS MPI_SEPARATE_FLAGS)
|
|
if("${_MPI_FLAG}" MATCHES "^ *-D([^ ]+)")
|
|
list(APPEND MPI_${LANG}_EXTRA_COMPILE_DEFINITIONS "${CMAKE_MATCH_1}")
|
|
else()
|
|
list(APPEND MPI_${LANG}_EXTRA_COMPILE_OPTIONS "${_MPI_FLAG}")
|
|
endif()
|
|
endforeach()
|
|
unset(MPI_SEPARATE_FLAGS)
|
|
endif()
|
|
|
|
# If a list of libraries was given, we'll split it into new-style cache variables
|
|
unset(MPI_${LANG}_EXTRA_LIB_NAMES)
|
|
if(NOT MPI_${LANG}_LIB_NAMES)
|
|
foreach(_MPI_LIB IN LISTS MPI_${LANG}_LIBRARIES MPI_LIBRARY MPI_EXTRA_LIBRARY)
|
|
if(_MPI_LIB)
|
|
get_filename_component(_MPI_PLAIN_LIB_NAME "${_MPI_LIB}" NAME_WE)
|
|
get_filename_component(_MPI_LIB_NAME "${_MPI_LIB}" NAME)
|
|
get_filename_component(_MPI_LIB_DIR "${_MPI_LIB}" DIRECTORY)
|
|
list(APPEND MPI_${LANG}_EXTRA_LIB_NAMES "${_MPI_PLAIN_LIB_NAME}")
|
|
find_library(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY
|
|
NAMES "${_MPI_LIB_NAME}" "lib${_MPI_LIB_NAME}"
|
|
HINTS ${_MPI_LIB_DIR} $ENV{MPI_LIB}
|
|
DOC "Location of the ${_MPI_PLAIN_LIB_NAME} library for MPI"
|
|
)
|
|
mark_as_advanced(MPI_${_MPI_PLAIN_LIB_NAME}_LIBRARY)
|
|
endif()
|
|
endforeach()
|
|
endif()
|
|
endforeach()
|
|
endif()
|
|
#=============================================================================
|
|
|
|
unset(MPI_VERSION)
|
|
unset(MPI_VERSION_MAJOR)
|
|
unset(MPI_VERSION_MINOR)
|
|
|
|
unset(_MPI_MIN_VERSION)
|
|
|
|
# If the user specified a library name we assume they prefer that library over a wrapper. If not, they can disable skipping manually.
|
|
if(NOT DEFINED MPI_SKIP_COMPILER_WRAPPER AND MPI_GUESS_LIBRARY_NAME)
|
|
set(MPI_SKIP_COMPILER_WRAPPER TRUE)
|
|
endif()
|
|
|
|
# This loop finds the compilers and sends them off for interrogation.
|
|
foreach(LANG IN ITEMS C CXX Fortran)
|
|
if(CMAKE_${LANG}_COMPILER_LOADED)
|
|
if(NOT MPI_FIND_COMPONENTS)
|
|
set(_MPI_FIND_${LANG} TRUE)
|
|
elseif( ${LANG} IN_LIST MPI_FIND_COMPONENTS)
|
|
set(_MPI_FIND_${LANG} TRUE)
|
|
elseif( ${LANG} STREQUAL CXX AND NOT MPI_CXX_SKIP_MPICXX AND MPICXX IN_LIST MPI_FIND_COMPONENTS )
|
|
set(_MPI_FIND_${LANG} TRUE)
|
|
else()
|
|
set(_MPI_FIND_${LANG} FALSE)
|
|
endif()
|
|
else()
|
|
set(_MPI_FIND_${LANG} FALSE)
|
|
endif()
|
|
if(_MPI_FIND_${LANG})
|
|
if( ${LANG} STREQUAL CXX AND NOT MPICXX IN_LIST MPI_FIND_COMPONENTS )
|
|
set(MPI_CXX_SKIP_MPICXX FALSE CACHE BOOL "If true, the MPI-2 C++ bindings are disabled using definitions.")
|
|
mark_as_advanced(MPI_CXX_SKIP_MPICXX)
|
|
endif()
|
|
if(NOT (MPI_${LANG}_LIB_NAMES AND (MPI_${LANG}_INCLUDE_PATH OR MPI_${LANG}_INCLUDE_DIRS OR MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS)))
|
|
set(MPI_${LANG}_TRIED_IMPLICIT FALSE)
|
|
set(MPI_${LANG}_WORKS_IMPLICIT FALSE)
|
|
if(NOT MPI_${LANG}_COMPILER AND NOT MPI_ASSUME_NO_BUILTIN_MPI)
|
|
# Should the imported targets be empty, we effectively try whether the compiler supports MPI on its own, which is the case on e.g.
|
|
# Cray PrgEnv.
|
|
_MPI_create_imported_target(${LANG})
|
|
_MPI_check_lang_works(${LANG})
|
|
|
|
# If the compiler can build MPI code on its own, it functions as an MPI compiler and we'll set the variable to point to it.
|
|
if(MPI_${LANG}_WORKS)
|
|
set(MPI_${LANG}_COMPILER "${CMAKE_${LANG}_COMPILER}" CACHE FILEPATH "MPI compiler for ${LANG}" FORCE)
|
|
set(MPI_${LANG}_WORKS_IMPLICIT TRUE)
|
|
endif()
|
|
set(MPI_${LANG}_TRIED_IMPLICIT TRUE)
|
|
endif()
|
|
|
|
if(NOT "${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}" OR NOT MPI_${LANG}_WORKS)
|
|
set(MPI_${LANG}_WRAPPER_FOUND FALSE)
|
|
set(MPI_PINNED_COMPILER FALSE)
|
|
|
|
if(NOT MPI_SKIP_COMPILER_WRAPPER)
|
|
if(MPI_${LANG}_COMPILER)
|
|
# If the user supplies a compiler *name* instead of an absolute path, assume that we need to find THAT compiler.
|
|
if (NOT IS_ABSOLUTE "${MPI_${LANG}_COMPILER}")
|
|
# Get rid of our default list of names and just search for the name the user wants.
|
|
set(_MPI_${LANG}_COMPILER_NAMES "${MPI_${LANG}_COMPILER}")
|
|
unset(MPI_${LANG}_COMPILER CACHE)
|
|
endif()
|
|
# If the user specifies a compiler, we don't want to try to search libraries either.
|
|
set(MPI_PINNED_COMPILER TRUE)
|
|
endif()
|
|
|
|
# If we have an MPI base directory, we'll try all compiler names in that one first.
|
|
# This should prevent mixing different MPI environments
|
|
if(_MPI_BASE_DIR)
|
|
find_program(MPI_${LANG}_COMPILER
|
|
NAMES ${_MPI_${LANG}_COMPILER_NAMES}
|
|
PATH_SUFFIXES bin sbin
|
|
HINTS ${_MPI_BASE_DIR}
|
|
NO_DEFAULT_PATH
|
|
DOC "MPI compiler for ${LANG}"
|
|
)
|
|
endif()
|
|
|
|
# If the base directory did not help (for example because the mpiexec isn't in the same directory as the compilers),
|
|
# we shall try searching in the default paths.
|
|
find_program(MPI_${LANG}_COMPILER
|
|
NAMES ${_MPI_${LANG}_COMPILER_NAMES}
|
|
PATH_SUFFIXES bin sbin
|
|
DOC "MPI compiler for ${LANG}"
|
|
)
|
|
|
|
if("${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}")
|
|
set(MPI_PINNED_COMPILER TRUE)
|
|
|
|
# If we haven't made the implicit compiler test yet, perform it now.
|
|
if(NOT MPI_${LANG}_TRIED_IMPLICIT)
|
|
_MPI_create_imported_target(${LANG})
|
|
_MPI_check_lang_works(${LANG})
|
|
endif()
|
|
|
|
# Should the MPI compiler not work implicitly for MPI, still interrogate it.
|
|
# Otherwise, MPI compilers for which CMake has separate linking stages, e.g. Intel MPI on Windows where link.exe is being used
|
|
# directly during linkage instead of CMAKE_<LANG>_COMPILER will not work.
|
|
if(NOT MPI_${LANG}_WORKS)
|
|
set(MPI_${LANG}_WORKS_IMPLICIT FALSE)
|
|
_MPI_interrogate_compiler(${LANG})
|
|
else()
|
|
set(MPI_${LANG}_WORKS_IMPLICIT TRUE)
|
|
endif()
|
|
elseif(MPI_${LANG}_COMPILER)
|
|
_MPI_interrogate_compiler(${LANG})
|
|
endif()
|
|
endif()
|
|
|
|
if(NOT MPI_PINNED_COMPILER AND NOT MPI_${LANG}_WRAPPER_FOUND)
|
|
# If MPI_PINNED_COMPILER wasn't given, and the MPI compiler we potentially found didn't work, we withdraw it.
|
|
set(MPI_${LANG}_COMPILER "MPI_${LANG}_COMPILER-NOTFOUND" CACHE FILEPATH "MPI compiler for ${LANG}" FORCE)
|
|
if(NOT MPI_SKIP_GUESSING)
|
|
# For C++, we may use the settings for C. Should a given compiler wrapper for C++ not exist, but one for C does, we copy over the
|
|
# settings for C. An MPI distribution that is in this situation would be IBM Platform MPI.
|
|
if("${LANG}" STREQUAL "CXX" AND MPI_C_WRAPPER_FOUND)
|
|
set(MPI_${LANG}_COMPILE_OPTIONS ${MPI_C_COMPILE_OPTIONS} CACHE STRING "MPI ${LANG} compilation options" )
|
|
set(MPI_${LANG}_COMPILE_DEFINITIONS ${MPI_C_COMPILE_DEFINITIONS} CACHE STRING "MPI ${LANG} compilation definitions" )
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS ${MPI_C_INCLUDE_DIRS} CACHE STRING "MPI ${LANG} additional include directories")
|
|
set(MPI_${LANG}_LINK_FLAGS ${MPI_C_LINK_FLAGS} CACHE STRING "MPI ${LANG} linker flags" )
|
|
set(MPI_${LANG}_LIB_NAMES ${MPI_C_LIB_NAMES} CACHE STRING "MPI ${LANG} libraries to link against" )
|
|
else()
|
|
_MPI_guess_settings(${LANG})
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
_MPI_split_include_dirs(${LANG})
|
|
_MPI_assemble_include_dirs(${LANG})
|
|
_MPI_assemble_libraries(${LANG})
|
|
|
|
_MPI_adjust_compile_definitions(${LANG})
|
|
# We always create imported targets even if they're empty
|
|
_MPI_create_imported_target(${LANG})
|
|
|
|
if(NOT MPI_${LANG}_WORKS)
|
|
_MPI_check_lang_works(${LANG})
|
|
endif()
|
|
|
|
# Next, we'll initialize the MPI variables that have not been previously set.
|
|
set(MPI_${LANG}_COMPILE_OPTIONS "" CACHE STRING "MPI ${LANG} compilation flags" )
|
|
set(MPI_${LANG}_COMPILE_DEFINITIONS "" CACHE STRING "MPI ${LANG} compilation definitions" )
|
|
set(MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS "" CACHE STRING "MPI ${LANG} additional include directories")
|
|
set(MPI_${LANG}_LINK_FLAGS "" CACHE STRING "MPI ${LANG} linker flags" )
|
|
if(NOT MPI_${LANG}_COMPILER STREQUAL CMAKE_${LANG}_COMPILER)
|
|
set(MPI_${LANG}_LIB_NAMES "" CACHE STRING "MPI ${LANG} libraries to link against" )
|
|
endif()
|
|
mark_as_advanced(MPI_${LANG}_COMPILE_OPTIONS MPI_${LANG}_COMPILE_DEFINITIONS MPI_${LANG}_LINK_FLAGS
|
|
MPI_${LANG}_LIB_NAMES MPI_${LANG}_ADDITIONAL_INCLUDE_DIRS MPI_${LANG}_COMPILER)
|
|
|
|
# If we've found MPI, then we'll perform additional analysis: Determine the MPI version, MPI library version, supported
|
|
# MPI APIs (i.e. MPI-2 C++ bindings). For Fortran we also need to find specific parameters if we're under MPI-3.
|
|
if(MPI_${LANG}_WORKS)
|
|
if("${LANG}" STREQUAL "CXX" AND NOT DEFINED MPI_MPICXX_FOUND)
|
|
if(NOT MPI_CXX_SKIP_MPICXX AND NOT MPI_CXX_VALIDATE_SKIP_MPICXX)
|
|
_MPI_try_staged_settings(${LANG} test_mpi MPICXX FALSE)
|
|
if(MPI_RESULT_${LANG}_test_mpi_MPICXX)
|
|
set(MPI_MPICXX_FOUND TRUE)
|
|
else()
|
|
set(MPI_MPICXX_FOUND FALSE)
|
|
endif()
|
|
else()
|
|
set(MPI_MPICXX_FOUND FALSE)
|
|
endif()
|
|
endif()
|
|
|
|
# At this point, we know the bindings present but not the MPI version or anything else.
|
|
if(NOT DEFINED MPI_${LANG}_VERSION)
|
|
unset(MPI_${LANG}_VERSION_MAJOR)
|
|
unset(MPI_${LANG}_VERSION_MINOR)
|
|
endif()
|
|
set(MPI_BIN_FOLDER ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/FindMPI)
|
|
|
|
# For Fortran, we'll want to use the most modern MPI binding to test capabilities other than the
|
|
# Fortran parameters, since those depend on the method of consumption.
|
|
# For C++, we can always use the C bindings, and should do so, since the C++ bindings do not exist in MPI-3
|
|
# whereas the C bindings do, and the C++ bindings never offered any feature advantage over their C counterparts.
|
|
if("${LANG}" STREQUAL "Fortran")
|
|
if(MPI_${LANG}_HAVE_F08_MODULE)
|
|
set(MPI_${LANG}_HIGHEST_METHOD F08_MODULE)
|
|
elseif(MPI_${LANG}_HAVE_F90_MODULE)
|
|
set(MPI_${LANG}_HIGHEST_METHOD F90_MODULE)
|
|
else()
|
|
set(MPI_${LANG}_HIGHEST_METHOD F77_HEADER)
|
|
endif()
|
|
|
|
# Another difference between C and Fortran is that we can't use the preprocessor to determine whether MPI_VERSION
|
|
# and MPI_SUBVERSION are provided. These defines did not exist in MPI 1.0 and 1.1 and therefore might not
|
|
# exist. For C/C++, test_mpi.c will handle the MPI_VERSION extraction, but for Fortran, we need mpiver.f90.
|
|
if(NOT DEFINED MPI_${LANG}_VERSION)
|
|
_MPI_try_staged_settings(${LANG} mpiver ${MPI_${LANG}_HIGHEST_METHOD} FALSE)
|
|
if(MPI_RESULT_${LANG}_mpiver_${MPI_${LANG}_HIGHEST_METHOD})
|
|
file(STRINGS ${MPI_BIN_FOLDER}/mpiver_${LANG}.bin _MPI_VERSION_STRING LIMIT_COUNT 1 REGEX "INFO:MPI-VER")
|
|
if("${_MPI_VERSION_STRING}" MATCHES ".*INFO:MPI-VER\\[([0-9]+)\\.([0-9]+)\\].*")
|
|
set(MPI_${LANG}_VERSION_MAJOR "${CMAKE_MATCH_1}")
|
|
set(MPI_${LANG}_VERSION_MINOR "${CMAKE_MATCH_2}")
|
|
set(MPI_${LANG}_VERSION "${MPI_${LANG}_VERSION_MAJOR}.${MPI_${LANG}_VERSION_MINOR}")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
# Finally, we want to find out which capabilities a given interface supports, compare the MPI-3 standard.
|
|
# This is determined by interface specific parameters MPI_SUBARRAYS_SUPPORTED and MPI_ASYNC_PROTECTS_NONBLOCKING
|
|
# and might vary between the different methods of consumption.
|
|
if(MPI_DETERMINE_Fortran_CAPABILITIES AND NOT MPI_Fortran_CAPABILITIES_DETERMINED)
|
|
foreach(mpimethod IN ITEMS F08_MODULE F90_MODULE F77_HEADER)
|
|
if(MPI_${LANG}_HAVE_${mpimethod})
|
|
set(MPI_${LANG}_${mpimethod}_SUBARRAYS FALSE)
|
|
set(MPI_${LANG}_${mpimethod}_ASYNCPROT FALSE)
|
|
_MPI_try_staged_settings(${LANG} fortranparam_mpi ${mpimethod} TRUE)
|
|
if(MPI_RESULT_${LANG}_fortranparam_mpi_${mpimethod} AND
|
|
NOT "${MPI_RUN_RESULT_${LANG}_fortranparam_mpi_${mpimethod}}" STREQUAL "FAILED_TO_RUN")
|
|
if("${MPI_RUN_OUTPUT_${LANG}_fortranparam_mpi_${mpimethod}}" MATCHES
|
|
".*INFO:SUBARRAYS\\[ *([TF]) *\\]-ASYNCPROT\\[ *([TF]) *\\].*")
|
|
if("${CMAKE_MATCH_1}" STREQUAL "T")
|
|
set(MPI_${LANG}_${mpimethod}_SUBARRAYS TRUE)
|
|
endif()
|
|
if("${CMAKE_MATCH_2}" STREQUAL "T")
|
|
set(MPI_${LANG}_${mpimethod}_ASYNCPROT TRUE)
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endforeach()
|
|
set(MPI_Fortran_CAPABILITIES_DETERMINED TRUE)
|
|
endif()
|
|
else()
|
|
set(MPI_${LANG}_HIGHEST_METHOD normal)
|
|
|
|
# By the MPI-2 standard, MPI_VERSION and MPI_SUBVERSION are valid for both C and C++ bindings.
|
|
if(NOT DEFINED MPI_${LANG}_VERSION)
|
|
file(STRINGS ${MPI_BIN_FOLDER}/test_mpi_${LANG}.bin _MPI_VERSION_STRING LIMIT_COUNT 1 REGEX "INFO:MPI-VER")
|
|
if("${_MPI_VERSION_STRING}" MATCHES ".*INFO:MPI-VER\\[([0-9]+)\\.([0-9]+)\\].*")
|
|
set(MPI_${LANG}_VERSION_MAJOR "${CMAKE_MATCH_1}")
|
|
set(MPI_${LANG}_VERSION_MINOR "${CMAKE_MATCH_2}")
|
|
set(MPI_${LANG}_VERSION "${MPI_${LANG}_VERSION_MAJOR}.${MPI_${LANG}_VERSION_MINOR}")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
unset(MPI_BIN_FOLDER)
|
|
|
|
# At this point, we have dealt with determining the MPI version and parameters for each Fortran method available.
|
|
# The one remaining issue is to determine which MPI library is installed.
|
|
# Determining the version and vendor of the MPI library is only possible via MPI_Get_library_version() at runtime,
|
|
# and therefore we cannot do this while cross-compiling (a user may still define MPI_<lang>_LIBRARY_VERSION_STRING
|
|
# themselves and we'll attempt splitting it, which is equivalent to provide the try_run output).
|
|
# It's also worth noting that the installed version string can depend on the language, or on the system the binary
|
|
# runs on if MPI is not statically linked.
|
|
if(MPI_DETERMINE_LIBRARY_VERSION AND NOT MPI_${LANG}_LIBRARY_VERSION_STRING)
|
|
_MPI_try_staged_settings(${LANG} libver_mpi ${MPI_${LANG}_HIGHEST_METHOD} TRUE)
|
|
if(MPI_RESULT_${LANG}_libver_mpi_${MPI_${LANG}_HIGHEST_METHOD} AND
|
|
"${MPI_RUN_RESULT_${LANG}_libver_mpi_${MPI_${LANG}_HIGHEST_METHOD}}" EQUAL "0")
|
|
string(STRIP "${MPI_RUN_OUTPUT_${LANG}_libver_mpi_${MPI_${LANG}_HIGHEST_METHOD}}"
|
|
MPI_${LANG}_LIBRARY_VERSION_STRING)
|
|
else()
|
|
set(MPI_${LANG}_LIBRARY_VERSION_STRING "NOTFOUND")
|
|
endif()
|
|
endif()
|
|
endif()
|
|
|
|
set(MPI_${LANG}_FIND_QUIETLY ${MPI_FIND_QUIETLY})
|
|
set(MPI_${LANG}_FIND_VERSION ${MPI_FIND_VERSION})
|
|
set(MPI_${LANG}_FIND_VERSION_EXACT ${MPI_FIND_VERSION_EXACT})
|
|
|
|
unset(MPI_${LANG}_REQUIRED_VARS)
|
|
if (NOT "${MPI_${LANG}_COMPILER}" STREQUAL "${CMAKE_${LANG}_COMPILER}")
|
|
foreach(mpilibname IN LISTS MPI_${LANG}_LIB_NAMES)
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${mpilibname}_LIBRARY")
|
|
endforeach()
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_LIB_NAMES")
|
|
if("${LANG}" STREQUAL "Fortran")
|
|
# For Fortran we only need one of the module or header directories to have *some* support for MPI.
|
|
if(NOT MPI_${LANG}_MODULE_DIR)
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_F77_HEADER_DIR")
|
|
endif()
|
|
if(NOT MPI_${LANG}_F77_HEADER_DIR)
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_MODULE_DIR")
|
|
endif()
|
|
else()
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_HEADER_DIR")
|
|
endif()
|
|
if(MPI_${LANG}_ADDITIONAL_INCLUDE_VARS)
|
|
foreach(mpiincvar IN LISTS MPI_${LANG}_ADDITIONAL_INCLUDE_VARS)
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${mpiincvar}_INCLUDE_DIR")
|
|
endforeach()
|
|
endif()
|
|
# Append the works variable now. If the settings did not work, this will show up properly.
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_WORKS")
|
|
else()
|
|
# If the compiler worked implicitly, use its path as output.
|
|
# Should the compiler variable be set, we also require it to work.
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_COMPILER")
|
|
if(MPI_${LANG}_COMPILER)
|
|
list(APPEND MPI_${LANG}_REQUIRED_VARS "MPI_${LANG}_WORKS")
|
|
endif()
|
|
endif()
|
|
find_package_handle_standard_args(MPI_${LANG} REQUIRED_VARS ${MPI_${LANG}_REQUIRED_VARS}
|
|
VERSION_VAR MPI_${LANG}_VERSION)
|
|
|
|
if(DEFINED MPI_${LANG}_VERSION)
|
|
if(NOT _MPI_MIN_VERSION OR _MPI_MIN_VERSION VERSION_GREATER MPI_${LANG}_VERSION)
|
|
set(_MPI_MIN_VERSION MPI_${LANG}_VERSION)
|
|
endif()
|
|
endif()
|
|
endif()
|
|
endforeach()
|
|
|
|
unset(_MPI_REQ_VARS)
|
|
foreach(LANG IN ITEMS C CXX Fortran)
|
|
if((NOT MPI_FIND_COMPONENTS AND CMAKE_${LANG}_COMPILER_LOADED) OR LANG IN_LIST MPI_FIND_COMPONENTS)
|
|
list(APPEND _MPI_REQ_VARS "MPI_${LANG}_FOUND")
|
|
endif()
|
|
endforeach()
|
|
|
|
if(MPICXX IN_LIST MPI_FIND_COMPONENTS)
|
|
list(APPEND _MPI_REQ_VARS "MPI_MPICXX_FOUND")
|
|
endif()
|
|
|
|
find_package_handle_standard_args(MPI
|
|
REQUIRED_VARS ${_MPI_REQ_VARS}
|
|
VERSION_VAR ${_MPI_MIN_VERSION}
|
|
HANDLE_COMPONENTS)
|
|
|
|
#=============================================================================
|
|
# More backward compatibility stuff
|
|
|
|
# For compatibility reasons, we also define MPIEXEC
|
|
set(MPIEXEC "${MPIEXEC_EXECUTABLE}")
|
|
|
|
# Copy over MPI_<LANG>_INCLUDE_PATH from the assembled INCLUDE_DIRS.
|
|
foreach(LANG IN ITEMS C CXX Fortran)
|
|
if(MPI_${LANG}_FOUND)
|
|
set(MPI_${LANG}_INCLUDE_PATH "${MPI_${LANG}_INCLUDE_DIRS}")
|
|
unset(MPI_${LANG}_COMPILE_FLAGS)
|
|
if(MPI_${LANG}_COMPILE_OPTIONS)
|
|
list(JOIN MPI_${LANG}_COMPILE_FLAGS " " MPI_${LANG}_COMPILE_OPTIONS)
|
|
endif()
|
|
if(MPI_${LANG}_COMPILE_DEFINITIONS)
|
|
foreach(_MPI_DEF IN LISTS MPI_${LANG}_COMPILE_DEFINITIONS)
|
|
string(APPEND MPI_${LANG}_COMPILE_FLAGS " -D${_MPI_DEF}")
|
|
endforeach()
|
|
endif()
|
|
endif()
|
|
endforeach()
|
|
|
|
# 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 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()
|
|
endif()
|
|
|
|
# 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 "${MPI_LIBRARY_WORK}")
|
|
unset(MPI_LIBRARY_WORK)
|
|
else()
|
|
set(MPI_LIBRARY "MPI_LIBRARY-NOTFOUND")
|
|
endif()
|
|
|
|
list(LENGTH MPI_LIBRARIES MPI_NUMLIBS)
|
|
if (MPI_NUMLIBS GREATER 1)
|
|
set(MPI_EXTRA_LIBRARY_WORK "${MPI_LIBRARIES}")
|
|
list(REMOVE_AT MPI_EXTRA_LIBRARY_WORK 0)
|
|
set(MPI_EXTRA_LIBRARY "${MPI_EXTRA_LIBRARY_WORK}")
|
|
unset(MPI_EXTRA_LIBRARY_WORK)
|
|
else()
|
|
set(MPI_EXTRA_LIBRARY "MPI_EXTRA_LIBRARY-NOTFOUND")
|
|
endif()
|
|
set(MPI_IGNORE_LEGACY_VARIABLES TRUE)
|
|
#=============================================================================
|
|
|
|
# unset these vars to cleanup namespace
|
|
unset(_MPI_OLD_VARS)
|
|
unset(_MPI_PREFIX_PATH)
|
|
unset(_MPI_BASE_DIR)
|
|
foreach (lang C CXX Fortran)
|
|
unset(_MPI_${LANG}_COMPILER_NAMES)
|
|
endforeach()
|
|
|
|
cmake_policy(POP)
|