- When doing VPATH compilation, the include-directory

has not been created yet by configure (happens only
   when mpi.h and other .in-files are being created...)
   Therefore mkdir -p it...

This commit was SVN r21278.

config/ompi_ext.m4

@@ -183,6 +183,9 @@ AC_DEFUN([EXT_CONFIGURE_FRAMEWORK],[
 
     outdir=$1/include
 
+    # first create the output include directory
+    mkdir -p $outdir
+
     # remove any previously generated #include files
     mpi_ext_h=$outdir/mpi-ext.h
     rm -f $mpi_ext_h