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      1 # rmdir.m4 serial 18
      2 dnl Copyright (C) 2002, 2005, 2009-2022 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.
      6 
      7 AC_DEFUN([gl_FUNC_RMDIR],
      8 [
      9   AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
     10   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
     11   dnl Detect cygwin 1.5.x bug.
     12   AC_CHECK_HEADERS_ONCE([unistd.h])
     13   AC_CACHE_CHECK([whether rmdir works], [gl_cv_func_rmdir_works],
     14     [mkdir conftest.dir
     15      touch conftest.file
     16      AC_RUN_IFELSE(
     17        [AC_LANG_PROGRAM(
     18          [[#include <stdio.h>
     19            #include <errno.h>
     20            #if HAVE_UNISTD_H
     21            # include <unistd.h>
     22            #else /* on Windows with MSVC */
     23            # include <direct.h>
     24            #endif
     25          ]GL_MDA_DEFINES],
     26          [[int result = 0;
     27            if (!rmdir ("conftest.file/"))
     28              result |= 1;
     29            else if (errno != ENOTDIR)
     30              result |= 2;
     31            if (!rmdir ("conftest.dir/./"))
     32              result |= 4;
     33            return result;
     34          ]])],
     35        [gl_cv_func_rmdir_works=yes], [gl_cv_func_rmdir_works=no],
     36        [case "$host_os" in
     37                            # Guess yes on Linux systems.
     38           linux-* | linux) gl_cv_func_rmdir_works="guessing yes" ;;
     39                            # Guess yes on glibc systems.
     40           *-gnu* | gnu*)   gl_cv_func_rmdir_works="guessing yes" ;;
     41                            # Guess no on native Windows.
     42           mingw*)          gl_cv_func_rmdir_works="guessing no" ;;
     43                            # If we don't know, obey --enable-cross-guesses.
     44           *)               gl_cv_func_rmdir_works="$gl_cross_guess_normal" ;;
     45         esac
     46        ])
     47      rm -rf conftest.dir conftest.file])
     48   case "$gl_cv_func_rmdir_works" in
     49     *yes) ;;
     50     *)
     51       REPLACE_RMDIR=1
     52       ;;
     53   esac
     54 ])
     55