diff --git a/include/unistd.h b/include/unistd.h
index e4d34e7fd..ab62354ad 100755
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -167,5 +167,7 @@ _PROTOTYPE( int setgroups, (int ngroups, const gid_t *gidset)		);
 #endif
 
 _PROTOTYPE( int readlink, (const char *, char *, int));
+_PROTOTYPE( int getopt, (int, char **, char *));
+extern int optind, opterr, optopt;
 
 #endif /* _UNISTD_H */