From 3de6b28c52758ac6376383eea6c8a546662444ef Mon Sep 17 00:00:00 2001
From: carns <carns@mcs.anl.gov>
Date: Tue, 11 May 2010 18:38:53 +0000
Subject: [PATCH] update configure so that --with-mpi argument overrides
 whatever mpicc is found in path

git-svn-id: https://svn.mcs.anl.gov/repos/darshan/trunk@233 3b7491f3-a168-0410-bf4b-c445ed680a29
---
 configure    | 45 +++++++++++++++++++++++----------------------
 configure.in | 31 ++++++++++++++++---------------
 2 files changed, 39 insertions(+), 37 deletions(-)

diff --git a/configure b/configure
index 27fe98b..5f33f9e 100755
--- a/configure
+++ b/configure
@@ -3191,7 +3191,23 @@ fi
 
 
 
-# Extract the first word of "mpicc", so it can be a program name with args.
+
+# Check whether --with-mpi or --without-mpi was given.
+if test "${with_mpi+set}" = set; then
+  withval="$with_mpi"
+  if test x$withval = xyes; then
+        { { echo "$as_me:$LINENO: error: --with-mpi must be given a pathname" >&5
+echo "$as_me: error: --with-mpi must be given a pathname" >&2;}
+   { (exit 1); exit 1; }; }
+    else
+        MPICC="${withval}/bin/mpicc"
+        HAVE_MPICC="yes"
+    fi
+
+fi;
+
+if test x$HAVE_MPICC != xyes; then
+    # Extract the first word of "mpicc", so it can be a program name with args.
 set dummy mpicc; ac_word=$2
 echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
@@ -3227,24 +3243,9 @@ else
 echo "${ECHO_T}no" >&6
 fi
 
-if test x$HAVE_MPICC != xyes; then
-
-# Check whether --with-mpi or --without-mpi was given.
-if test "${with_mpi+set}" = set; then
-  withval="$with_mpi"
-  if test x$withval = xyes; then
-            { { echo "$as_me:$LINENO: error: --with-mpi must be given a pathname" >&5
-echo "$as_me: error: --with-mpi must be given a pathname" >&2;}
-   { (exit 1); exit 1; }; }
-        else
-            MPICC="${withval}/bin/mpicc"
-            GOT_MPICC="1"
-        fi
-
-fi;
-else
-    GOT_MPICC="1"
-    MPICC=mpicc
+    if test x$HAVE_MPICC = xyes; then
+        MPICC=mpicc
+    fi
 fi
 
 
@@ -3306,9 +3307,9 @@ fi;
 saveCC="$CC"
 CC="$MPICC"
 
-if test x$GOT_MPICC != x1; then
-    { { echo "$as_me:$LINENO: error: must provide --with-mpi=<path> argument to configure." >&5
-echo "$as_me: error: must provide --with-mpi=<path> argument to configure." >&2;}
+if test x$HAVE_MPICC != "xyes"; then
+    { { echo "$as_me:$LINENO: error: must provide --with-mpi=<path> argument to configure if mpicc is not in path." >&5
+echo "$as_me: error: must provide --with-mpi=<path> argument to configure if mpicc is not in path." >&2;}
    { (exit 1); exit 1; }; }
 fi
 if test x$GOT_ALIGNMENT != x1; then
diff --git a/configure.in b/configure.in
index 4869e54..c2e43d6 100644
--- a/configure.in
+++ b/configure.in
@@ -13,20 +13,21 @@ AC_PROG_INSTALL
 
 CHECK_ZLIB
 
-AC_CHECK_PROG(HAVE_MPICC, mpicc, yes, no)
+AC_ARG_WITH(mpi,
+[  --with-mpi=<dir>        Location of the MPI installation],
+    if test x$withval = xyes; then
+        AC_MSG_ERROR(--with-mpi must be given a pathname)
+    else
+        MPICC="${withval}/bin/mpicc"
+        HAVE_MPICC="yes"
+    fi
+)
+
 if test x$HAVE_MPICC != xyes; then
-    AC_ARG_WITH(mpi,
-    [  --with-mpi=<dir>        Location of the MPI installation],
-        if test x$withval = xyes; then
-            AC_MSG_ERROR(--with-mpi must be given a pathname)
-        else
-            MPICC="${withval}/bin/mpicc"
-            GOT_MPICC="1"
-        fi
-    )
-else
-    GOT_MPICC="1"
-    MPICC=mpicc
+    AC_CHECK_PROG(HAVE_MPICC, mpicc, yes, no)
+    if test x$HAVE_MPICC = xyes; then
+        MPICC=mpicc
+    fi
 fi
 AC_SUBST(MPICC)
 
@@ -65,8 +66,8 @@ AC_ARG_WITH(log-path,
 saveCC="$CC"
 CC="$MPICC"
 
-if test x$GOT_MPICC != x1; then
-    AC_MSG_ERROR(must provide --with-mpi=<path> argument to configure.)
+if test x$HAVE_MPICC != "xyes"; then
+    AC_MSG_ERROR(must provide --with-mpi=<path> argument to configure if mpicc is not in path.)
 fi
 if test x$GOT_ALIGNMENT != x1; then
     AC_MSG_ERROR(must provide --with-mem-align=<num> argument to configure.)
-- 
2.26.2