From 412fbdfad3dffee714ac19e7beba3135dd33427a Mon Sep 17 00:00:00 2001
From: Albert Cheng <acheng@hdfgroup.org>
Date: Wed, 28 Sep 2005 23:57:44 -0500
Subject: [svn-r11476] Purpose: feature.

Description:
added the recognition of -lmpich as a form of MPI library.

Platforms tested:
Tested in heping. Real test will be in MCR.
---
 configure    | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 configure.in |  7 +++--
 2 files changed, 91 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 0fe169d..55b8da2 100755
--- a/configure
+++ b/configure
@@ -48234,7 +48234,7 @@ echo "${ECHO_T}skipped" >&6
 echo "${ECHO_T}provided by compiler" >&6
     PARALLEL=yes
 
-        cat >conftest.$ac_ext <<_ACEOF
+            cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -48284,6 +48284,7 @@ else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
+\
 
 echo "$as_me:$LINENO: checking for MPI_Init in -lmpi" >&5
 echo $ECHO_N "checking for MPI_Init in -lmpi... $ECHO_C" >&6
@@ -48365,10 +48366,94 @@ _ACEOF
   LIBS="-lmpi $LIBS"
 
 else
+  \
+
+echo "$as_me:$LINENO: checking for MPI_Init in -lmpich" >&5
+echo $ECHO_N "checking for MPI_Init in -lmpich... $ECHO_C" >&6
+if test "${ac_cv_lib_mpich_MPI_Init+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lmpich  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* 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 ();
+#ifdef FC_DUMMY_MAIN
+#ifndef FC_DUMMY_MAIN_EQ_F77
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int FC_DUMMY_MAIN() { return 1; }
+#endif
+#endif
+int
+main ()
+{
+MPI_Init ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_mpich_MPI_Init=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_mpich_MPI_Init=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_mpich_MPI_Init" >&5
+echo "${ECHO_T}$ac_cv_lib_mpich_MPI_Init" >&6
+if test $ac_cv_lib_mpich_MPI_Init = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBMPICH 1
+_ACEOF
+
+  LIBS="-lmpich $LIBS"
+
+else
   PARALLEL=no
 fi
 
 fi
+
+fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
 
diff --git a/configure.in b/configure.in
index 2e366e9..4af6591 100644
--- a/configure.in
+++ b/configure.in
@@ -2152,8 +2152,11 @@ case "X-$enable_parallel" in
     AC_MSG_RESULT([provided by compiler])
     PARALLEL=yes
 
-    dnl Try link a simple MPI program.  If fail, try again with -lmpi.
-    AC_TRY_LINK(, MPI_Init(),, AC_CHECK_LIB(mpi, MPI_Init,, PARALLEL=no))
+    dnl Try link a simple MPI program.  If fail, try again with -lmpi and
+    dnl -lmpich.
+    AC_TRY_LINK(, MPI_Init(),, \
+	AC_CHECK_LIB(mpi, MPI_Init,, \
+	    AC_CHECK_LIB(mpich, MPI_Init,, PARALLEL=no)))
 
     dnl Then try link a simple MPI-IO program. If fail, try again with
     dnl -lmpio.
-- 
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