/* Some packages define ARGMATCH_DIE and ARGMATCH_DIE_DECL in <config.h>, and
thus must link with a definition of that function. Provide it here. */
#ifdef ARGMATCH_DIE_DECL
-#ifndef __attribute__
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8)
-# define __attribute__(x) /* empty */
-# endif
-#endif
-
-#ifndef ATTRIBUTE_NORETURN
-# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
-#endif
-ARGMATCH_DIE_DECL ATTRIBUTE_NORETURN;
+_Noreturn ARGMATCH_DIE_DECL;
ARGMATCH_DIE_DECL { exit (1); }
+
#endif
enum backup_type