diff --git a/config.h.in b/config.h.in
index f5c2e44..456287a 100644
--- a/config.h.in
+++ b/config.h.in
@@ -153,9 +153,15 @@
 /* Define to 1 if you have the <stdlib.h> header file. */
 #undef HAVE_STDLIB_H
 
+/* Define to 1 if you have the `strcasecmp' function. */
+#undef HAVE_STRCASECMP
+
 /* Define to 1 if you have the `strchr' function. */
 #undef HAVE_STRCHR
 
+/* Define to 1 if you have the `strcmp' function. */
+#undef HAVE_STRCMP
+
 /* Define to 1 if you have the `strerror' function. */
 #undef HAVE_STRERROR