# rmdir.m4 serial 7
dnl Copyright (C) 2002, 2005, 2009-2010 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_RMDIR],
[
  AC_REQUIRE([gl_AC_DOS])
  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
  dnl FIXME: simplify this module in 2010 if no one reports a missing rmdir
  AC_REPLACE_FUNCS([rmdir])
  if test $ac_cv_func_rmdir = no; then
    REPLACE_RMDIR=1
    # If someone lacks rmdir, make configure fail, and request
    # a bug report to inform us about it.
    if test x"$SKIP_RMDIR_CHECK" != xyes; then
      AC_MSG_FAILURE([Your system lacks the rmdir function.
              Please report this, along with the output of "uname -a", to the
              bug-coreutils@gnu.org mailing list.  To continue past this point,
              rerun configure with SKIP_RMDIR_CHECK=yes.
              E.g., ./configure SKIP_RMDIR_CHECK=yes])
    fi
  else
    dnl Detect cygwin 1.5.x bug.
    AC_CACHE_CHECK([whether rmdir works], [gl_cv_func_rmdir_works],
      [mkdir conftest.dir
       touch conftest.file
       AC_RUN_IFELSE(
         [AC_LANG_PROGRAM(
           [[#include <stdio.h>
             #include <errno.h>
             #include <unistd.h>
]], [[return !rmdir ("conftest.file/") || errno != ENOTDIR
       || !rmdir ("conftest.dir/./");]])],
         [gl_cv_func_rmdir_works=yes], [gl_cv_func_rmdir_works=no],
         [gl_cv_func_rmdir_works="guessing no"])
       rm -rf conftest.dir conftest.file])
    if test x"$gl_cv_func_rmdir_works" != xyes; then
      REPLACE_RMDIR=1
      AC_LIBOBJ([rmdir])
    fi
  fi
])