-#if !HAVE_MEMMEM // GNU extension.
-void *memmem (void const * haystack, int haystack_len,
- void const *needle, int needle_len);
+char *strnlwr (char *start, int n);
+char *strnupr (char *start, int n);
+
+#if ! HAVE_MEMMEM /* GNU extension. */
+void *memmem (void const *haystack, int haystack_len,
+ void const *needle, int needle_len);