Merge pull request #8130 from jsquyres/pr/4.1.x/in-space-no-one-hears-you-scream

v4.1.x: Check for spaces in prefix, srcdir, and builddir

config/opal_get_version.m4

@@ -83,9 +83,9 @@ m4_define([OPAL_GET_VERSION],[
             if test -d "$srcdir/.git" && test $git_happy -eq 1; then
                 if test "$srcdir" != "`pwd`"; then
                     git_save_dir=`pwd`
-                    cd $srcdir
+                    cd "$srcdir"
                     $2_REPO_REV=`git describe --tags --always`
-                    cd $git_save_dir
+                    cd "$git_save_dir"
                     unset git_save_dir
                 else
                     $2_REPO_REV=`git describe --tags --always`

configure.ac

@@ -111,6 +111,26 @@ AM_SILENT_RULES([yes])
 # Make configure depend on the VERSION file, since it's used in AC_INIT
 AC_SUBST([CONFIGURE_DEPENDENCIES], ['$(top_srcdir)/VERSION'])
 
+# Sanity checks
+AC_DEFUN([OMPI_CHECK_DIR_FOR_SPACES],[
+    dir="$1"
+    article="$2"
+    label="$3"
+
+    AC_MSG_CHECKING([directory of $label])
+    AC_MSG_RESULT([$dir])
+    AS_IF([test -n "`echo $dir | grep ' '`"],
+          [AC_MSG_WARN([This version of Open MPI does not support $article $label])
+           AC_MSG_WARN([with a path that contains spaces])
+           AC_MSG_ERROR([Cannot continue.])])
+])
+
+OMPI_CHECK_DIR_FOR_SPACES([$srcdir], [a], [source tree])
+OMPI_CHECK_DIR_FOR_SPACES([`readlink -f $srcdir`], [an], [absolute source tree])
+OMPI_CHECK_DIR_FOR_SPACES([`readlink -f .`], [a], [build tree])
+OMPI_CHECK_DIR_FOR_SPACES([$prefix], [a], [prefix])
+OMPI_CHECK_DIR_FOR_SPACES([`readlink -f $prefix`], [an], [absolute prefix])
+
 opal_show_subtitle "Checking versions"
 
 # Get the version of OMPI that we are installing