--- which-2.25/getopt.h.orig	2025-02-01 19:17:56.000000000 +0100
+++ which-2.25/getopt.h	2026-09-12 19:58:28.612866486 +0200
@@ -102,7 +102,7 @@
    errors, only prototype getopt for the GNU C library.  */
 extern int getopt(int argc, char *const *argv, const char *shortopts);
 #else  /* not __GNU_LIBRARY__ */
-extern int getopt();
+/* extern int getopt(); */
 #endif /* __GNU_LIBRARY__ */
 extern int getopt_long(int argc, char *const *argv, const char *shortopts, const struct option *longopts, int *longind);
 extern int getopt_long_only(int argc, char *const *argv, const char *shortopts, const struct option *longopts,