-# getcwd.m4 - check whether getcwd (NULL, 0) allocates memory for result
+# getcwd.m4 - check for working getcwd that is compatible with glibc
-# Copyright (C) 2001, 2003 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software Foundation,
-# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+# Copyright (C) 2001, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
# Written by Paul Eggert.
-AC_DEFUN([AC_FUNC_GETCWD_NULL],
+AC_DEFUN([gl_FUNC_GETCWD_NULL],
[
- AC_CHECK_HEADERS_ONCE(unistd.h)
AC_CACHE_CHECK([whether getcwd (NULL, 0) allocates memory for result],
- [ac_cv_func_getcwd_null],
+ [gl_cv_func_getcwd_null],
[AC_TRY_RUN(
[
# include <stdlib.h>
-# ifdef HAVE_UNISTD_H
-# include <unistd.h>
-# endif
+# include <unistd.h>
# ifndef getcwd
char *getcwd ();
# endif
exit (! (f && f[0] == '/' && !f[1]));
}
}],
- [ac_cv_func_getcwd_null=yes],
- [ac_cv_func_getcwd_null=no],
- [ac_cv_func_getcwd_null=no])])
- if test $ac_cv_func_getcwd_null = yes; then
- AC_DEFINE(HAVE_GETCWD_NULL, 1,
- [Define if getcwd (NULL, 0) allocates memory for result.])
- fi])
+ [gl_cv_func_getcwd_null=yes],
+ [gl_cv_func_getcwd_null=no],
+ [gl_cv_func_getcwd_null=no])])
+])
+
+AC_DEFUN([gl_FUNC_GETCWD],
+[
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ AC_REQUIRE([gl_FUNC_GETCWD_NULL])
+
+ gl_abort_bug=no
+ case $gl_cv_func_getcwd_null in
+ yes)
+ gl_FUNC_GETCWD_PATH_MAX
+ gl_FUNC_GETCWD_ABORT_BUG([gl_abort_bug=yes]);;
+ esac
+
+ case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_path_max,$gl_abort_bug in
+ yes,yes,no) ;;
+ *)
+ REPLACE_GETCWD=1
+ AC_LIBOBJ([getcwd])
+ gl_PREREQ_GETCWD;;
+ esac
+])
+
+# Prerequisites of lib/getcwd.c.
+AC_DEFUN([gl_PREREQ_GETCWD],
+[
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+ AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])
+ :
+])