-#ifdef __GNU_LIBRARY__
-/* GNU libc by default defines getpgrp with no args on all systems. */
-#if __GLIBC__ >= 2
-/* glibc-2.1 adds the BSD compatibility getpgrp function
- if you use __BSD_SOURCE, which Emacs does on GNU/Linux systems. */
-#if __GLIBC_MINOR__ < 1 || ! defined (_BSD_SOURCE)
-#define GETPGRP_NO_ARG
-#endif
-#else /* __GLIBC__ < 2 */
-#define GETPGRP_NO_ARG
-#endif /* __GLIBC__ < 2 */
-#else /* not __GNU_LIBRARY__ */
-#if defined (USG) && !defined (GETPGRP_NEEDS_ARG)
-# if !defined (GETPGRP_NO_ARG)
-# define GETPGRP_NO_ARG
-# endif
-#endif
-#endif /* not __GNU_LIBRARY__ */
-
-#if defined (GETPGRP_NO_ARG)