# rmdir.m4 serial 13

dnl Copyright (C) 2002, 2005, 2009-2015 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_UNISTD_H_DEFAULTS])

  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

  dnl Detect cygwin 1.5.x bug.

  AC_CHECK_HEADERS_ONCE([unistd.h])

  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>

           #if HAVE_UNISTD_H

           # include <unistd.h>

           #else /* on Windows with MSVC */

           # include <direct.h>

           #endif

]], [[int result = 0;

      if (!rmdir ("conftest.file/"))

        result |= 1;

      else if (errno != ENOTDIR)

        result |= 2;

      if (!rmdir ("conftest.dir/./"))

        result |= 4;

      return result;

    ]])],

       [gl_cv_func_rmdir_works=yes], [gl_cv_func_rmdir_works=no],

       [case "$host_os" in

                  # Guess yes on glibc systems.

          *-gnu*) gl_cv_func_rmdir_works="guessing yes" ;;

                  # If we don't know, assume the worst.

          *)      gl_cv_func_rmdir_works="guessing no" ;;

        esac

       ])

     rm -rf conftest.dir conftest.file])

  case "$gl_cv_func_rmdir_works" in

    *yes) ;;

    *)

      REPLACE_RMDIR=1

      ;;

  esac

])