Avoid a mkdir error message when racing to mkdir.

Thanks to Eric Anholt for reporting the problem.

1 files changed, 2 insertions, 1 deletions

diff --git a/dolt.m4 b/dolt.m4
index da8c0c7..7b69108 100644
--- a/dolt.m4
+++ b/dolt.m4
@@ -60,9 +60,10 @@ dnl Write out shared compilation code.
         cat <<'__DOLTCOMPILE__EOF__' >>doltcompile
 libobjdir="${obj%$objbase}.libs"
 if test ! -d "$libobjdir" ; then
-    mkdir "$libobjdir"
+    mkdir_out="$(mkdir "$libobjdir" 2>&1)"
     mkdir_ret=$?
     if test "$mkdir_ret" -ne 0 && test ! -d "$libobjdir" ; then
+	echo "$mkdir_out" 1>&2
         exit $mkdir_ret
     fi
 fi