diff -ur diffutils-2.7/fnmatch.h diffutils-2.7_osf/fnmatch.h
--- diffutils-2.7/fnmatch.h	Tue Sep 27 17:16:50 1994
+++ diffutils-2.7_osf/fnmatch.h	Mon Feb 21 15:21:51 2000
@@ -48,9 +48,13 @@
 #define	FNM_NOESCAPE	(1 << 1) /* Backslashes don't quote special chars.  */
 #define	FNM_PERIOD	(1 << 2) /* Leading `.' is matched only explicitly.  */
 
-#if !defined (_POSIX_C_SOURCE) || _POSIX_C_SOURCE < 2 || defined (_GNU_SOURCE)
+#ifndef FNM_FILE_NAME
 #define	FNM_FILE_NAME	FNM_PATHNAME /* Preferred GNU name.  */
+#endif
+#ifndef FNM_LEADING_DIR
 #define	FNM_LEADING_DIR	(1 << 3) /* Ignore `/...' after a match.  */
+#endif
+#ifndef FNM_CASEFOLD
 #define	FNM_CASEFOLD	(1 << 4) /* Compare without regard to case.  */
 #endif