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dnl----------------------------------------------------------------------------
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dnl This file is part of the Code_Saturne Kernel, element of the
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dnl Code_Saturne CFD tool.
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dnl Copyright (C) 2009 EDF S.A., France
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dnl The Code_Saturne Kernel is free software; you can redistribute it
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dnl and/or modify it under the terms of the GNU General Public License
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dnl as published by the Free Software Foundation; either version 2 of
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dnl the License, or (at your option) any later version.
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dnl The Code_Saturne Kernel is distributed in the hope that it will be
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dnl useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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dnl of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl You should have received a copy of the GNU General Public Licence
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dnl along with the Code_Saturne Preprocessor; if not, write to the
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dnl Free Software Foundation, Inc.,
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dnl 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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dnl-----------------------------------------------------------------------------
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# optional MPI support (use CC=mpicc with configure if necessary)
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# modifies or sets cs_have_mpi, MPI_CPPFLAGS, MPI_LDFLAGS, and MPI_LIBS
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# depending on libraries found
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AC_DEFUN([CS_AC_TEST_MPI], [
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saved_CPPFLAGS="$CPPFLAGS"
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saved_LDFLAGS="$LDFLAGS"
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[AS_HELP_STRING([--with-mpi=PATH],
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[specify prefix directory for MPI])],
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[if test "x$withval" = "x"; then
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[AS_HELP_STRING([--with-mpi-exec=PATH],
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[specify prefix directory for MPI executables])],
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[if test "x$with_mpi" = "xcheck"; then
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mpi_bindir="$with_mpi_exec"],
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[if test "x$with_mpi" != "xno" -a "x$with_mpi" != "xyes" \
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-a "x$with_mpi" != "xcheck"; then
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mpi_bindir="$with_mpi/bin"
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AC_ARG_WITH(mpi-include,
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[AS_HELP_STRING([--with-mpi-include=PATH],
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[specify directory for MPI include files])],
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[if test "x$with_mpi" = "xcheck"; then
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MPI_CPPFLAGS="-I$with_mpi_include"],
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[if test "x$with_mpi" != "xno" -a "x$with_mpi" != "xyes" \
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-a "x$with_mpi" != "xcheck"; then
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MPI_CPPFLAGS="-I$with_mpi/include"
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[AS_HELP_STRING([--with-mpi-lib=PATH],
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[specify directory for MPI library])],
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[if test "x$with_mpi" = "xcheck"; then
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MPI_LDFLAGS="-L$with_mpi_lib"
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mpi_libdir="$with_mpi_lib"],
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[if test "x$with_mpi" != "xno" -a "x$with_mpi" != "xyes" \
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-a "x$with_mpi" != "xcheck"; then
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MPI_LDFLAGS="-L$with_mpi/lib"
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mpi_libdir="$with_mpi/lib"
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# Just in case, remove excess whitespace from existing flag and libs variables.
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if test "$MPI_CPPFLAGS" != "" ; then
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MPI_CPPFLAGS=`echo $MPI_CPPFLAGS | sed 's/^[ ]*//;s/[ ]*$//'`
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if test "$MPI_LDFLAGS" != "" ; then
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MPI_LDFLAGS=`echo $MPI_LDFLAGS | sed 's/^[ ]*//;s/[ ]*$//'`
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if test "$MPI_LIBS" != "" ; then
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MPI_LIBS=`echo $MPI_LIBS | sed 's/^[ ]*//;s/[ ]*$//'`
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# If we do not use an MPI compiler wrapper, we must add compilation
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# and link flags; we try to detect the correct flags to add.
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if test "x$with_mpi" != "xno" -a "x$cs_have_mpi" = "xno" ; then
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# try several tests for MPI
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# MPI Compiler wrapper test
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AC_MSG_CHECKING([for MPI (MPI compiler wrapper test)])
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CPPFLAGS="$saved_CPPFLAGS $MPI_CPPFLAGS"
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LDFLAGS="$saved_LDFLAGS $MPI_LDFLAGS"
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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AC_MSG_RESULT($cs_have_mpi)
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# If failed, basic test
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if test "x$cs_have_mpi" = "xno"; then
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CPPFLAGS="$saved_CPPFLAGS $MPI_CPPFLAGS"
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# First, check for mpi.h header
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AC_CHECK_HEADERS([mpi.h],
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[cs_have_mpi_header=yes],
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if test $cs_have_mpi_header = no ; then
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unset ac_cv_header_mpi_h
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MPI_CPPFLAGS="-I/usr/include/mpi"
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CPPFLAGS="$saved_CPPFLAGS $MPI_CPPFLAGS"
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AC_CHECK_HEADERS([mpi.h],
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[cs_have_mpi_header=yes],
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AC_MSG_CHECKING([for MPI (basic test)])
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if test "$MPI_LIBS" = "" ; then
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MPI_LIBS="-lmpi $PTHREAD_LIBS"
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LDFLAGS="$saved_LDFLAGS $MPI_LDFLAGS"
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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AC_MSG_RESULT($cs_have_mpi)
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# If failed, test for mpich
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if test "x$cs_have_mpi" = "xno"; then
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AC_MSG_CHECKING([for MPI (mpich test)])
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# First try (simplest)
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MPI_LIBS="-lmpich $PTHREAD_LIBS"
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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if test "x$cs_have_mpi" = "xno"; then
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# Second try (with lpmpich)
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MPI_LIBS="-Wl,-lpmpich -Wl,-lmpich -Wl,-lpmpich -Wl,-lmpich"
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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AC_MSG_RESULT($cs_have_mpi)
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# If failed, test for lam-mpi
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if test "x$cs_have_mpi" = "xno"; then
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AC_MSG_CHECKING([for MPI (lam-mpi test)])
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# First try (without MPI-IO)
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MPI_LIBS="-lmpi -llam $PTHREAD_LIBS";;
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MPI_LIBS="-lmpi -llam -lpthread";;
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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if test "x$cs_have_mpi" = "xno"; then
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# Second try (with MPI-IO)
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MPI_LIBS="-lmpi -llam -lutil -ldl $PTHREAD_LIBS";;
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MPI_LIBS="-lmpi -llam -lutil -ldl -lpthread";;
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LIBS="$saved_LIBS $MPI_LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <mpi.h>]],
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[[ MPI_Init(0, (void *)0); ]])],
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[AC_DEFINE([HAVE_MPI], 1, [MPI support])
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AC_MSG_RESULT($cs_have_mpi)
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if test "x$cs_have_mpi" = "xno"; then
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if test "x$with_mpi" != "xcheck" ; then
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AC_MSG_FAILURE([MPI support is requested, but test for MPI failed!])
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AC_MSG_WARN([no MPI support])
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# Try to detect MPI variants as this may be useful for the run scripts to
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# determine the correct mpi startup syntax (especially when multiple
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# librairies are installed on the same machine).
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CPPFLAGS="$saved_CPPFLAGS $MPI_CPPFLAGS"
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if test "x$cs_ibm_bg_type" != "x" ; then
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if test "x$cs_ibm_bg_type" = "xL" ; then
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elif test "x$cs_ibm_bg_type" = "xP" ; then
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if test "x$mpi_type" = "x"; then
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AC_EGREP_CPP([mpich2],
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if test "x$mpi_type" = "x"; then
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#ifdef OMPI_MAJOR_VERSION
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if test "x$mpi_type" = "x"; then
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AC_EGREP_CPP([mpibull2],
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if test "x$mpi_type" = "x"; then
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AC_EGREP_CPP([lam_mpi],
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if test "x$mpi_type" = "x"; then
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AC_EGREP_CPP([hp_mpi],
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CPPFLAGS="$saved_CPPFLAGS"
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LDFLAGS="$saved_LDFLAGS"
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AM_CONDITIONAL(HAVE_MPI, test x$cs_have_mpi = xyes)
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AC_SUBST(MPI_CPPFLAGS)
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AC_SUBST(MPI_LDFLAGS)
added
removed
config/cs_mpi.m4
