# getcwd.m4 - check for working getcwd that is compatible with glibc
-# Copyright (C) 2001, 2003-2007, 2009-2011 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003-2007, 2009-2013 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.
-# serial 9
+# serial 12
AC_DEFUN([gl_FUNC_GETCWD_NULL],
[
]])],
[gl_cv_func_getcwd_null=yes],
[gl_cv_func_getcwd_null=no],
- [[
- case "$host_os" in
- # Guess yes on glibc systems.
- *-gnu*) gl_cv_func_getcwd_null="guessing yes";;
- # Guess yes on Cygwin.
- cygwin*) gl_cv_func_getcwd_null="guessing yes";;
- # If we don't know, assume the worst.
- *) gl_cv_func_getcwd_null="guessing no";;
- esac
+ [[case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_getcwd_null="guessing yes";;
+ # Guess yes on Cygwin.
+ cygwin*) gl_cv_func_getcwd_null="guessing yes";;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_getcwd_null="guessing no";;
+ esac
]])])
])
AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
gl_abort_bug=no
- case $gl_cv_func_getcwd_null,$host_os in
- *,mingw*)
- gl_cv_func_getcwd_path_max=yes;;
- yes,*)
- gl_FUNC_GETCWD_PATH_MAX
- gl_FUNC_GETCWD_ABORT_BUG([gl_abort_bug=yes]);;
+ case "$host_os" in
+ mingw*)
+ gl_cv_func_getcwd_path_max=yes
+ ;;
+ *)
+ gl_FUNC_GETCWD_PATH_MAX
+ case "$gl_cv_func_getcwd_null" in
+ *yes)
+ gl_FUNC_GETCWD_ABORT_BUG([gl_abort_bug=yes])
+ ;;
+ esac
+ ;;
esac
-
- case $gl_cv_func_getcwd_null,$gl_cv_func_getcwd_posix_signature$gl_cv_func_getcwd_path_max,$gl_abort_bug in
- *yes,yes,yes,no) ;;
- *)
- dnl Full replacement lib/getcwd.c, overrides LGPL replacement.
- REPLACE_GETCWD=1;;
+ dnl Define HAVE_MINIMALLY_WORKING_GETCWD and HAVE_PARTLY_WORKING_GETCWD
+ dnl if appropriate.
+ case "$gl_cv_func_getcwd_path_max" in
+ "no"|"no, it has the AIX bug") ;;
+ *)
+ AC_DEFINE([HAVE_MINIMALLY_WORKING_GETCWD], [1],
+ [Define to 1 if getcwd minimally works, that is, its result can be
+ trusted when it succeeds.])
+ ;;
+ esac
+ case "$gl_cv_func_getcwd_path_max" in
+ "no, but it is partly working")
+ AC_DEFINE([HAVE_PARTLY_WORKING_GETCWD], [1],
+ [Define to 1 if getcwd works, except it sometimes fails when it
+ shouldn't, setting errno to ERANGE, ENAMETOOLONG, or ENOENT.])
+ ;;
esac
+
+ if { case "$gl_cv_func_getcwd_null" in *yes) false;; *) true;; esac; } \
+ || test $gl_cv_func_getcwd_posix_signature != yes \
+ || test "$gl_cv_func_getcwd_path_max" != yes \
+ || test $gl_abort_bug = yes; then
+ REPLACE_GETCWD=1
+ fi
])
# Prerequisites of lib/getcwd.c, when full replacement is in effect.