gnulib/import/m4/mkdir.m4

   1 # serial 11
   2
   3 # Copyright (C) 2001, 2003-2004, 2006, 2008-2016 Free Software Foundation, Inc.
   4 # This file is free software; the Free Software Foundation
   5 # gives unlimited permission to copy and/or distribute it,
   6 # with or without modifications, as long as this notice is preserved.
   7
   8 # On some systems, mkdir ("foo/", 0700) fails because of the trailing slash.
   9 # On others, mkdir ("foo/./", 0700) mistakenly succeeds.
  10 # On such systems, arrange to use a wrapper function.
  11 AC_DEFUN([gl_FUNC_MKDIR],
  12 [dnl
  13   AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
  14   AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
  15   AC_CHECK_HEADERS_ONCE([unistd.h])
  16   AC_CACHE_CHECK([whether mkdir handles trailing slash],
  17     [gl_cv_func_mkdir_trailing_slash_works],
  18     [rm -rf conftest.dir
  19       AC_RUN_IFELSE([AC_LANG_PROGRAM([[
  20 #       include <sys/types.h>
  21 #       include <sys/stat.h>
  22 ]], [return mkdir ("conftest.dir/", 0700);])],
  23       [gl_cv_func_mkdir_trailing_slash_works=yes],
  24       [gl_cv_func_mkdir_trailing_slash_works=no],
  25       [case "$host_os" in
  26                  # Guess yes on glibc systems.
  27          *-gnu*) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
  28                  # If we don't know, assume the worst.
  29          *)      gl_cv_func_mkdir_trailing_slash_works="guessing no" ;;
  30        esac
  31       ])
  32     rm -rf conftest.dir
  33     ]
  34   )
  35   case "$gl_cv_func_mkdir_trailing_slash_works" in
  36     *yes) ;;
  37     *)
  38       REPLACE_MKDIR=1
  39       ;;
  40   esac
  41
  42   AC_CACHE_CHECK([whether mkdir handles trailing dot],
  43     [gl_cv_func_mkdir_trailing_dot_works],
  44     [rm -rf conftest.dir
  45       AC_RUN_IFELSE([AC_LANG_PROGRAM([[
  46 #       include <sys/types.h>
  47 #       include <sys/stat.h>
  48 ]], [return !mkdir ("conftest.dir/./", 0700);])],
  49       [gl_cv_func_mkdir_trailing_dot_works=yes],
  50       [gl_cv_func_mkdir_trailing_dot_works=no],
  51       [case "$host_os" in
  52                  # Guess yes on glibc systems.
  53          *-gnu*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
  54                  # If we don't know, assume the worst.
  55          *)      gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
  56        esac
  57       ])
  58     rm -rf conftest.dir
  59     ]
  60   )
  61   case "$gl_cv_func_mkdir_trailing_dot_works" in
  62     *yes) ;;
  63     *)
  64       REPLACE_MKDIR=1
  65       AC_DEFINE([FUNC_MKDIR_DOT_BUG], [1], [Define to 1 if mkdir mistakenly
  66         creates a directory given with a trailing dot component.])
  67       ;;
  68   esac
  69 ])