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- # opendir.m4 serial 5
- dnl Copyright (C) 2011-2021 Free 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.
- AC_DEFUN([gl_FUNC_OPENDIR],
- [
- AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
- AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
- AC_CHECK_FUNCS([opendir])
- if test $ac_cv_func_opendir = no; then
- HAVE_OPENDIR=0
- fi
- dnl Replace opendir() for supporting the gnulib-defined fchdir() function,
- dnl to keep fchdir's bookkeeping up-to-date.
- m4_ifdef([gl_FUNC_FCHDIR], [
- gl_TEST_FCHDIR
- if test $HAVE_FCHDIR = 0; then
- if test $HAVE_OPENDIR = 1; then
- REPLACE_OPENDIR=1
- fi
- fi
- ])
- dnl Replace opendir() on OS/2 kLIBC to support dirfd() function replaced
- dnl by gnulib.
- case $host_os,$HAVE_OPENDIR in
- os2*,1)
- REPLACE_OPENDIR=1;;
- esac
- ])
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