From 9b1828ffd0799edabec86b79b15bd4b6b70bee28 Mon Sep 17 00:00:00 2001
From: James Laird <jlaird@hdfgroup.org>
Date: Tue, 6 Sep 2005 11:57:05 -0500
Subject: [svn-r11353] Purpose: Bug fix

Description:
Configure should now throw an error when C++ or threadsafe is enabled
and a parallel compiler is being used.


Platforms tested:
sleipnir and modi4
Tested
--enable-cxx --enable-parallel --disable-cxx
--enable-cxx --disable-parallel
cases in particular.

Misc. update:
---
 configure    | 15 +++++++++++++--
 configure.in | 14 ++++++++++++--
 2 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index f73d5fe..dfe6737 100755
--- a/configure
+++ b/configure
@@ -48110,18 +48110,29 @@ if test "${enable_parallel+set}" = set; then
 
 fi;
 
-if test "${enable_cxx}" = "yes" -a "$enable_parallel" = "yes"; then
+if test "X${HDF_CXX}" = "Xyes" -a "X${enable_parallel}" = "Xyes"; then
   { { echo "$as_me:$LINENO: error: --enable-cxx and --enable-parallel flags are incompatible" >&5
 echo "$as_me: error: --enable-cxx and --enable-parallel flags are incompatible" >&2;}
    { (exit 1); exit 1; }; }
 fi
 
-if test "${enable_threadsafe}" = "yes" -a "$enable_parallel" = "yes"; then
+if test "X${THREADSAFE}" = "Xyes" -a "X${enable_parallel}" = "Xyes"; then
   { { echo "$as_me:$LINENO: error: --enable-threadsafe and --enable-parallel flags are incompatible" >&5
 echo "$as_me: error: --enable-threadsafe and --enable-parallel flags are incompatible" >&2;}
    { (exit 1); exit 1; }; }
 fi
 
+if test "X${PARALLEL}" != "X" -a "X${enable_cxx}" = "Xyes" ; then
+  { { echo "$as_me:$LINENO: error: An MPI compiler is being used; --enable-cxx is not allowed" >&5
+echo "$as_me: error: An MPI compiler is being used; --enable-cxx is not allowed" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+if test "X${PARALLEL}" != "X" -a "X${THREADSAFE}" = "Xyes"; then
+  { { echo "$as_me:$LINENO: error: An MPI compiler is being used; --enable-threadsafe is not allowed" >&5
+echo "$as_me: error: An MPI compiler is being used; --enable-threadsafe is not allowed" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
 echo "$as_me:$LINENO: checking for parallel support files" >&5
 echo $ECHO_N "checking for parallel support files... $ECHO_C" >&6
 case "X-$enable_parallel" in
diff --git a/configure.in b/configure.in
index 28ace27..cbc127a 100644
--- a/configure.in
+++ b/configure.in
@@ -2033,15 +2033,25 @@ AC_ARG_ENABLE([parallel],
 
 dnl The --enable-parallel flag is not compatible with --enable-cxx.
 dnl If the user tried to specify both flags, throw an error.
-if test "${enable_cxx}" = "yes" -a "$enable_parallel" = "yes"; then
+if test "X${HDF_CXX}" = "Xyes" -a "X${enable_parallel}" = "Xyes"; then
   AC_MSG_ERROR([--enable-cxx and --enable-parallel flags are incompatible])
 fi
 
 dnl --enable-parallel is also incompatible with --enable-threadsafe.
-if test "${enable_threadsafe}" = "yes" -a "$enable_parallel" = "yes"; then
+if test "X${THREADSAFE}" = "Xyes" -a "X${enable_parallel}" = "Xyes"; then
   AC_MSG_ERROR([--enable-threadsafe and --enable-parallel flags are incompatible])
 fi
 
+dnl It's possible to build in parallel by specifying a parallel compiler
+dnl without using the --enable-parallel flag.  This isn't allowed with
+dnl C++ or threadsafe, either.
+if test "X${PARALLEL}" != "X" -a "X${enable_cxx}" = "Xyes" ; then
+  AC_MSG_ERROR([An MPI compiler is being used; --enable-cxx is not allowed])
+fi
+if test "X${PARALLEL}" != "X" -a "X${THREADSAFE}" = "Xyes"; then
+  AC_MSG_ERROR([An MPI compiler is being used; --enable-threadsafe is not allowed])
+fi
+
 AC_MSG_CHECKING([for parallel support files])
 case "X-$enable_parallel" in
   X-|X-no|X-none)
-- 
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