diff --git a/config/opal_setup_wrappers.m4 b/config/opal_setup_wrappers.m4
index 6a3be1fc80b..73c16fc36b8 100644
--- a/config/opal_setup_wrappers.m4
+++ b/config/opal_setup_wrappers.m4
@@ -227,12 +227,41 @@ AC_DEFUN([OPAL_SETUP_RUNPATH],[
                             AC_MSG_RESULT([yes (-Wl,--enable-new-dtags)])],
                            [AC_MSG_RESULT([no])])
             AC_LANG_POP([C])])
-    m4_ifdef([project_ompi],[
-        OPAL_LIBTOOL_CONFIG([wl],[wl_fc],[--tag=FC],[])
+m4_ifdef([project_ompi],[
+    # Output goes into globally-visible $rpath_args.  Run this in a
+    # sub-process so that we don't pollute the current process
+    # environment.
+    rpath_script=conftest.$$.sh
+    rpath_outfile=conftest.$$.out
+    rm -f $rpath_script $rpath_outfile
+    cat > $rpath_script <<EOF
+#!/bin/sh
+
+# Slurp in the libtool config into my environment
+
+# Apparently, "libtoool --config" calls "exit", so we can't source it
+# (because if script A sources script B, and B calls "exit", then both
+# B and A will exit).  Instead, we have to send the output to a file
+# and then source that.
+$OPAL_TOP_BUILDDIR/libtool --tag=FC --config > $rpath_outfile
+
+chmod +x $rpath_outfile
+. ./$rpath_outfile
+rm -f $rpath_outfile
+
+wl="\`eval echo \$wl\`"
+echo \$wl
+
+# Done
+exit 0
+EOF
+    chmod +x $rpath_script
+    wl_fc=`./$rpath_script`
+    rm -f $rpath_script
 
-        LDFLAGS="$LDFLAGS_save ${wl_fc}--enable-new-dtags"
-        AC_LANG_PUSH([Fortran])
-        AC_LINK_IFELSE([AC_LANG_SOURCE([[program test
+    LDFLAGS="$LDFLAGS_save ${wl_fc}--enable-new-dtags"
+    AC_LANG_PUSH([Fortran])
+    AC_LINK_IFELSE([AC_LANG_SOURCE([[program test
 end program]])],
                        [runpath_fc_args="${wl_fc}--enable-new-dtags"],
                        [runpath_fc_args=""])