[svn-r1810] Purpose:

    New feature
configure.in:
    When just --enable-parallel is used, will try to test if MPI and MPI-IO
    library codes are linkable.  If not, try -lmpi and -lmpio as the most
    commonly used library names for them.
    Also, set default value for RUNPARALLEL if not set.
    Now, for systems, like SGI Crays where there are the system supported
    MPI libraries, "./configure --enable-parallel" would configure
    correctly.
Configure:
    Derived from configure.in via autoconf.
Platform tested:
    SGI O2K.

1 files changed, 167 insertions, 6 deletions

diff --git a/configure b/configure
index a987989..63bea45 100755
--- a/configure
+++ b/configure
@@ -5481,9 +5481,149 @@ case "X-$enable_parallel" in
 
     X-yes)
 	# We want to compile a parallel library with a compiler that
-	# already knows how to link with MPI and MPI-IO.
+	# may already know how to link with MPI and MPI-IO.
 	echo "$ac_t""provided by compiler" 1>&6
 	PARALLEL=yes
+
+	# Try link a simple MPI program.  If fail, try again with -lmpi.
+	cat > conftest.$ac_ext <<EOF
+#line 5491 "configure"
+#include "confdefs.h"
+
+int main() {
+MPI_Init()
+; return 0; }
+EOF
+if { (eval echo configure:5498: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  :
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  echo $ac_n "checking for MPI_Init in -lmpi""... $ac_c" 1>&6
+echo "configure:5505: checking for MPI_Init in -lmpi" >&5
+ac_lib_var=`echo mpi'_'MPI_Init | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lmpi  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5513 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char MPI_Init();
+
+int main() {
+MPI_Init()
+; return 0; }
+EOF
+if { (eval echo configure:5524: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo mpi | sed -e 's/^a-zA-Z0-9_/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-lmpi $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+PARALLEL=no
+fi
+
+fi
+rm -f conftest*
+
+	# Then try link a simple MPI-IO program.  If fail, try again with
+	# -lmpio.
+	if test "yes" = "$PARALLEL"; then
+	    cat > conftest.$ac_ext <<EOF
+#line 5559 "configure"
+#include "confdefs.h"
+
+int main() {
+MPI_File_open()
+; return 0; }
+EOF
+if { (eval echo configure:5566: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  :
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  echo $ac_n "checking for MPI_File_open in -lmpio""... $ac_c" 1>&6
+echo "configure:5573: checking for MPI_File_open in -lmpio" >&5
+ac_lib_var=`echo mpio'_'MPI_File_open | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lmpio  $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 5581 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char MPI_File_open();
+
+int main() {
+MPI_File_open()
+; return 0; }
+EOF
+if { (eval echo configure:5592: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+    ac_tr_lib=HAVE_LIB`echo mpio | sed -e 's/^a-zA-Z0-9_/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  cat >> confdefs.h <<EOF
+#define $ac_tr_lib 1
+EOF
+
+  LIBS="-lmpio $LIBS"
+
+else
+  echo "$ac_t""no" 1>&6
+PARALLEL=no
+fi
+
+fi
+rm -f conftest*
+	fi
+
+	# Set RUNPARALLEL to mpirun if not set yet.
+	if test "yes" = "$PARALLEL" -a "X-" = "X-$RUNPARALLEL"; then
+	    RUNPARALLEL="mpirun -np \$\${NPROCS:=2}"
+	fi
 	;;
 
     X-mpich)
@@ -5501,7 +5641,7 @@ case "X-$enable_parallel" in
 	# is missing.
 	PARALLEL=mpich
 	echo $ac_n "checking for MPI_Init in -lmpich""... $ac_c" 1>&6
-echo "configure:5505: checking for MPI_Init in -lmpich" >&5
+echo "configure:5645: checking for MPI_Init in -lmpich" >&5
 ac_lib_var=`echo mpich'_'MPI_Init | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -5509,7 +5649,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lmpich  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 5513 "configure"
+#line 5653 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -5520,7 +5660,7 @@ int main() {
 MPI_Init()
 ; return 0; }
 EOF
-if { (eval echo configure:5524: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:5664: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -5569,13 +5709,34 @@ EOF
 
     # Display what we found about running programs
     echo $ac_n "checking prefix for running on one processor""... $ac_c" 1>&6
-echo "configure:5573: checking prefix for running on one processor" >&5
+echo "configure:5713: checking prefix for running on one processor" >&5
     echo "$ac_t""$RUNSERIAL" 1>&6
     echo $ac_n "checking prefix for running in parallel""... $ac_c" 1>&6
-echo "configure:5576: checking prefix for running in parallel" >&5
+echo "configure:5716: checking prefix for running in parallel" >&5
     echo "$ac_t""$RUNPARALLEL" 1>&6
 
     # Check that we can link a simple MPI and MPI-IO application
+    echo $ac_n "checking whether a simple MPI-IO program can be linked""... $ac_c" 1>&6
+echo "configure:5721: checking whether a simple MPI-IO program can be linked" >&5
+    cat > conftest.$ac_ext <<EOF
+#line 5723 "configure"
+#include "confdefs.h"
+
+int main() {
+MPI_Init();MPI_File_open();
+; return 0; }
+EOF
+if { (eval echo configure:5730: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  echo "$ac_t""yes" 1>&6
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  echo "$ac_t""no" 1>&6
+	        { echo "configure: error: 'unable to link a simple MPI-IO application'" 1>&2; exit 1; }
+fi
+rm -f conftest*
 
 
     # There *must* be some way to run in parallel even if it's just the