-#serial 1
-
-dnl From Jim Meyering.
-dnl If you use this macro in a package, you should
-dnl add the following two lines to acconfig.h:
-dnl /* Define to rpl_chown if the replacement function should be used. */
-dnl #undef chown
-dnl
-
-AC_DEFUN(jm_FUNC_CHOWN,
-[AC_REQUIRE([AC_TYPE_UID_T])dnl
- test -z "$ac_cv_header_unistd_h" \
- && AC_CHECK_HEADERS(unistd.h)
- AC_CACHE_CHECK([for working chown], jm_cv_func_working_chown,
- [AC_TRY_RUN([
-# include <sys/types.h>
-# include <fcntl.h>
-# ifdef HAVE_UNISTD_H
-# include <unistd.h>
-# endif
-
- int
- main ()
- {
- char *f = "conftestchown";
- if (creat (f, 0600) < 0)
- exit (1);
- exit (chown (f, (gid_t) -1, (uid_t) -1) == -1 ? 1 : 0);
- }
- ],
- jm_cv_func_working_chown=yes,
- jm_cv_func_working_chown=no,
- dnl When crosscompiling, assume chown is broken.
- jm_cv_func_working_chown=no)
- ])
- if test $jm_cv_func_working_chown = no; then
- LIBOBJS="$LIBOBJS chown.o"
- AC_DEFINE_UNQUOTED(chown, rpl_chown)
+#serial 14
+# Determine whether we need the chown wrapper.
+
+dnl Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 Free
+dnl Software Foundation, Inc.
+
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# chown should accept arguments of -1 for uid and gid, and it should
+# dereference symlinks. If it doesn't, arrange to use the replacement
+# function.
+
+# From Jim Meyering.
+
+AC_DEFUN([gl_FUNC_CHOWN],
+[
+ AC_REQUIRE([AC_TYPE_UID_T])
+ AC_REQUIRE([AC_FUNC_CHOWN])
+ AC_REQUIRE([gl_FUNC_CHOWN_FOLLOWS_SYMLINK])
+
+ if test $ac_cv_func_chown_works = no; then
+ AC_DEFINE(CHOWN_FAILS_TO_HONOR_ID_OF_NEGATIVE_ONE, 1,
+ [Define if chown is not POSIX compliant regarding IDs of -1.])
+ fi
+
+ # If chown has either of the above problems, then we need the wrapper.
+ if test $ac_cv_func_chown_works$gl_cv_func_chown_follows_symlink = yesyes; then
+ : # no wrapper needed
+ else
+ AC_LIBOBJ(chown)
+ AC_DEFINE(chown, rpl_chown,
+ [Define to rpl_chown if the replacement function should be used.])
+ gl_PREREQ_CHOWN