1 # getcwd.m4 - check for working getcwd that is compatible with glibc
3 # Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4 # This file is free software; the Free Software Foundation
5 # gives unlimited permission to copy and/or distribute it,
6 # with or without modifications, as long as this notice is preserved.
8 # Written by Paul Eggert.
10 AC_DEFUN([gl_FUNC_GETCWD_NULL],
12 AC_CACHE_CHECK([whether getcwd (NULL, 0) allocates memory for result],
13 [gl_cv_func_getcwd_null],
28 char *f = getcwd (NULL, 0);
29 exit (! (f && f[0] == '/' && !f[1]));
32 [gl_cv_func_getcwd_null=yes],
33 [gl_cv_func_getcwd_null=no],
34 [gl_cv_func_getcwd_null=no])])
37 AC_DEFUN([gl_FUNC_GETCWD],
39 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
40 AC_REQUIRE([gl_FUNC_GETCWD_NULL])
43 case $gl_cv_func_getcwd_null in
45 gl_FUNC_GETCWD_PATH_MAX
46 gl_FUNC_GETCWD_ABORT_BUG([gl_abort_bug=yes]);;
49 case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_path_max,$gl_abort_bug in
58 # Prerequisites of lib/getcwd.c.
59 AC_DEFUN([gl_PREREQ_GETCWD],
61 AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
62 AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])