(libintl.h): Include this if _LIBC. Otherwise include gettext.h. (wchar.h): Include, maybe. (attribute_hidden): Define if not defind. (__getopt_initialized): Use attribute_hidden. (__libc_argc, __libc_argv): Renamed from original_argc, etc. (__getopt_nonoption_flags, nonoption_flags_max_len, nonoption_flags_len): Conditional on USE_NONOPTION_FLAGS. (SWAP_FLAGS): New definitions. (exchange): Test USE_NONOPTION_FLAGS. (_getopt_initialize): Test USE_NONOPTION_FLAGS. (_getopt_internal): Error if argc < 1. New local var print_errors. Improve test for ambiguous long option. Add LIBIO support for error message output. (NONOPTION_P): Test USE_NONOPTION_FLAGS.
This directory contains the source code for the architecture-dependent files that go in ../arch-lib. At present, these are mostly utility programs used by Emacs.