1# closedir.m4 serial 6
2dnl Copyright (C) 2011-2021 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_FUNC_CLOSEDIR],
8[
9  AC_REQUIRE([gl_DIRENT_H_DEFAULTS])
10  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
11
12  AC_CHECK_FUNCS([closedir])
13  if test $ac_cv_func_closedir = no; then
14    HAVE_CLOSEDIR=0
15  fi
16  dnl Replace closedir() for supporting the gnulib-defined fchdir() function,
17  dnl to keep fchdir's bookkeeping up-to-date.
18  m4_ifdef([gl_FUNC_FCHDIR], [
19    gl_TEST_FCHDIR
20    if test $HAVE_FCHDIR = 0; then
21      if test $HAVE_CLOSEDIR = 1; then
22        REPLACE_CLOSEDIR=1
23      fi
24    fi
25  ])
26  dnl Replace closedir() for supporting the gnulib-defined dirfd() function.
27  case $host_os,$HAVE_CLOSEDIR in
28    os2*,1)
29      REPLACE_CLOSEDIR=1;;
30  esac
31])
32