>From a7ed24ccfb253faec3ecfec3abdfdc89d0c460a5 Mon Sep 17 00:00:00 2001
From: Ralf Wildenhues <address@hidden>
Date: Sat, 31 Jul 2010 17:46:48 +0200
Subject: [PATCH] Fix recommendation for compiling everything with MPI.

* m4/ax_mpi.m4: Fix typos when compiling everything with MPI.
Update description to include defaulting CC to MPICC if only
the latter was set.
---
 m4/ax_mpi.m4 |   17 +++++++++++++----
 1 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/m4/ax_mpi.m4 b/m4/ax_mpi.m4
index 06c0abd..9607203 100644
--- a/m4/ax_mpi.m4
+++ b/m4/ax_mpi.m4
@@ -19,10 +19,19 @@
 #   are needed for linking MPI (e.g. -lmpi or -lfmpi, if a special
 #   MPICC/MPICXX/MPIF77/MPIFC was not found).
 #
-#   If you want to compile everything with MPI, you should set:
-#
-#     CC="MPICC" #OR# CXX="MPICXX" #OR# F77="MPIF77" #OR# FC="MPIFC"
-#     LIBS="$MPILIBS $LIBS"
+#   If you want to compile everything with MPI, you should use something like
+#   this for C:
+#
+#       if test -z "$CC" && test -n "$MPICC"; then
+#         CC="$MPICC"
+#       fi
+#       AC_PROG_CC
+#       AX_MPI
+#       CC="$MPICC"
+#       LIBS="$MPILIBS $LIBS"
+#
+#   and similar for C++ (change all instances of CC to CXX), Fortran 77
+#   (with F77 instead of CC) or Fortran (with FC instead of CC).
 #
 #   NOTE: The above assumes that you will use $CC (or whatever) for linking
 #   as well as for compiling. (This is the default for automake and most
-- 
1.7.2.rc3.47.g996ce