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(gl_FUNC_GETCWD_NULL): Renamed from

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AC_FUNC_GETCWD_NULL.  All used changed.  Change cache variable
name accordingly.
(gl_FUNC_GETCWD, gl_PREREQ_GETCWD): New macros.  Revamp to
accommodate new getcwd.c.
This commit is contained in:
Paul Eggert
2004-11-25 19:28:28 +00:00
parent 22c4a7e5c2
commit fb95865e11
1 changed files with 36 additions and 11 deletions
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m4/getcwd.m4
+36 -11
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@@ -1,6 +1,6 @@
# 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.
# Copyright (C) 2001, 2003, 2004 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
@@ -18,11 +18,11 @@
# 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>
@@ -43,10 +43,35 @@ 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])
AC_CHECK_HEADERS_ONCE(fcntl.h)
:
])