X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fgetcwd.m4;h=35d0b53bd3f024066ca12ee9f02e33accdca24e5;hb=d6067ec16649b3ebb477bd1023ddf48809b78837;hp=159aa2bafe2b32b31ea134ace394e4ccd6374e1d;hpb=d01e199f674be88351d5956a13fe6dc406efacb5;p=gnulib.git

diff --git a/m4/getcwd.m4 b/m4/getcwd.m4
index 159aa2baf..35d0b53bd 100644
--- a/m4/getcwd.m4
+++ b/m4/getcwd.m4
@@ -1,34 +1,22 @@
-# 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 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_LIBSOURCES([getcwd.c, getcwd.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
@@ -43,10 +31,34 @@ AC_DEFUN([AC_FUNC_GETCWD_NULL],
 	       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_FUNC_GETCWD_NULL])
+
+  case $gl_cv_func_getcwd_null in
+  yes) gl_FUNC_GETCWD_PATH_MAX;;
+  esac
+
+  case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_path_max in
+  yes,yes) ;;
+  *)
+    AC_LIBOBJ([getcwd])
+    AC_DEFINE([__GETCWD_PREFIX], [[rpl_]],
+      [Define to rpl_ if the getcwd replacement function should be used.])
+    gl_PREREQ_GETCWD;;
+  esac
+])
+
+# Prerequisites of lib/getcwd.c.
+AC_DEFUN([gl_PREREQ_GETCWD],
+[
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_REQUIRE([AC_HEADER_DIRENT])
+  AC_REQUIRE([gl_CHECK_TYPE_STRUCT_DIRENT_D_INO])
+  :
+])