1 files changed, 3 insertions, 0 deletions
diff --git a/config.in b/config.in
index 6ad1527e..11232f02 100644
--- a/config.in
+++ b/config.in
@@ -51,6 +51,9 @@
 /* Define to 1 if you have the <sys/types.h> header file. */
 #undef HAVE_SYS_TYPES_H
 
+/* Define to 1 if you have the <tr1/unordered_map> header file. */
+#undef HAVE_TR1_UNORDERED_MAP
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H