2 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_FUNC_OPENDIR],
9 AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
10 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
12 AC_CHECK_FUNCS([opendir])
13 if test $ac_cv_func_opendir = no; then
16 dnl Replace opendir() for supporting the gnulib-defined fchdir() function,
17 dnl to keep fchdir's bookkeeping up-to-date.
18 m4_ifdef([gl_FUNC_FCHDIR], [
20 if test $HAVE_FCHDIR = 0; then
21 if test $HAVE_OPENDIR = 1; then
26 dnl Replace opendir() on OS/2 kLIBC to support dirfd() function replaced
28 case $host_os,$HAVE_OPENDIR in