From afb7eb798fdba18b5a2942a5e88ac796de072d6d Mon Sep 17 00:00:00 2001
From: "Peter W. Draper" <p.w.draper@durham.ac.uk>
Date: Wed, 10 Jun 2015 13:25:13 +0100
Subject: [PATCH] Add MPI and METIS support, neither is enabled by default
For future requirements
---
configure.ac | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
diff --git a/configure.ac b/configure.ac
index 3ec22c1..1b3e241 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,59 @@ LT_INIT
AX_COMPILER_VENDOR
AX_COMPILER_VERSION
+# Check for MPI. Need to do this before characterising the compiler (C99 mode),
+# as this changes the compiler.
+# We should consider using AX_PROG_CC_MPI to replace AC_PROG_CC when compiling
+# whole applications. There are issues with mixing compilers when using this
+# macro. See
+# http://lists.gnu.org/archive/html/autoconf-archive-maintainers/2011-05/msg00004.html.
+AC_ARG_ENABLE([mpi],
+ [AS_HELP_STRING([--enable-mpi],
+ [Compile with functionality for distributed-memory parallelism using MPI @<:@default=yes@:>@]
+ )],
+ [enable_mpi="$enableval"],
+ [enable_mpi="no"]
+)
+if test "$enable_mpi" = "yes"; then
+ AX_MPI([CC="$MPICC" AC_DEFINE(HAVE_MPI, 1, [Define if you have the MPI library.]) ])
+
+ # Various MPI implementations require additional libraries when also using
+ # threads. Use mpirun (on PATH) as that seems to be only command with
+ # version flag.
+ AC_PATH_PROG([MPIRUN],[mpirun],[notfound])
+ if test "$MPIRUN" = "notfound"; then
+ AC_MSG_WARN([Cannot find mpirun command on PATH, thread support may not be correct])
+ else
+ # Special options we know about.
+ # Intel: -mt_mpi
+ # PLATFORM: -lmtmpi
+ # OpenMPI: nothing, but library should be built correctly.
+ # Set MPI_THREAD_LIBS and add to linker commands as necessary.
+ AC_MSG_CHECKING([MPI threads options])
+ version=`$MPIRUN -version 2>&1`
+ case "$version" in
+ *Intel*MPI*)
+ MPI_THREAD_LIBS="-mt_mpi"
+ AC_MSG_RESULT([Intel MPI])
+ ;;
+ *Platform*)
+ MPI_THREAD_LIBS="-lmtmpi"
+ AC_MSG_RESULT([PLATFORM MPI])
+ ;;
+ *"Open MPI"*)
+ MPI_THREAD_LIBS=""
+ AC_MSG_RESULT([Open MPI])
+ ;;
+ *)
+ MPI_THREAD_LIBS=""
+ AC_MSG_RESULT([unknown])
+ ;;
+ esac
+ AC_SUBST([MPI_THREAD_LIBS])
+ fi
+fi
+AM_CONDITIONAL([HAVEMPI],[test -n "$MPICC"])
+
# Need C99 and inline support.
AC_PROG_CC_C99
AC_C_INLINE
@@ -125,6 +178,29 @@ else
AC_DEFINE(HAVE_OPENMP,1,[Define if OpenMP is enabled])
fi
+# Check for metis. Note AX_LIB_METIS exists, but cannot be configured
+# to be default off (i.e. given no option it tries to locate METIS), so we
+# don't use that.
+AC_ARG_WITH([metis],
+ [AS_HELP_STRING([--with-metis=PATH],
+ [prefix where the metis library is installed @<:@default=yes@:>@]
+ )],
+ [],
+ [with_metis="no"]
+)
+if test "x$with_metis" != "xno"; then
+ if test "x$with_metis" != "xyes" -a "x$with_metis" != "x"; then
+ METIS_LIBS="-L$with_metis -lmetis"
+ else
+ METIS_LIBS="-lmetis"
+ fi
+ AC_CHECK_LIB([metis],[METIS_PartGraphKway],
+ AC_DEFINE([HAVE_METIS],1,[The metis library appears to be present.]),
+ AC_MSG_ERROR(something is wrong with the metis library!),$METIS_LIBS)
+fi
+AC_SUBST([METIS_LIBS])
+AM_CONDITIONAL([HAVEMETIS],[test -n "$METIS_LIBS"])
+
# Check for timing functions needed by cycle.h
AC_C_INLINE
AC_HEADER_TIME
@@ -164,7 +240,9 @@ AC_MSG_RESULT([
vendor: $ax_cv_c_compiler_vendor
version: $ax_cv_c_compiler_version
flags: $CFLAGS
+ MPI enabled: $enable_mpi
OpenMP enabled: $enable_openmp
+ Metis enabled: $with_metis
])
# generate output.
--
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