diff -Naur gettext-0.21/gettext-tools/gnulib-lib/fnmatch_loop.c gettext-0.21.serenity/gettext-tools/gnulib-lib/fnmatch_loop.c
--- diffutils-3.7/lib/fnmatch_loop.c	2020-06-26 21:57:10.000000000 +0200
+++ diffutils-3.7.serenity/lib/fnmatch_loop.c	2021-05-08 05:06:59.944736766 +0200
@@ -19,6 +19,10 @@
 
 /* Match STRING against the file name pattern PATTERN, returning zero if
    it matches, nonzero if not.  */
+#ifdef __serenity__
+# define FNM_EXTMATCH 9000
+#endif
+
 static int EXT (INT opt, const CHAR *pattern, const CHAR *string,
                 const CHAR *string_end, bool no_leading_period, int flags)
      internal_function;