1# serial 15
2
3# Copyright (C) 2001, 2003-2004, 2006, 2008-2019 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.
11AC_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 "$host_os" in
26                          # Guess yes on Linux systems.
27         linux-* | linux) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
28                          # Guess yes on glibc systems.
29         *-gnu* | gnu*)   gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;;
30                          # Guess yes on MSVC, no on mingw.
31         mingw*)          AC_EGREP_CPP([Known], [
32#ifdef _MSC_VER
33 Known
34#endif
35                            ],
36                            [gl_cv_func_mkdir_trailing_slash_works="guessing yes"],
37                            [gl_cv_func_mkdir_trailing_slash_works="guessing no"])
38                          ;;
39                          # If we don't know, assume the worst.
40         *)               gl_cv_func_mkdir_trailing_slash_works="guessing no" ;;
41       esac
42      ])
43    rm -rf conftest.dir
44    ]
45  )
46  case "$gl_cv_func_mkdir_trailing_slash_works" in
47    *yes) ;;
48    *)
49      REPLACE_MKDIR=1
50      ;;
51  esac
52
53  AC_CACHE_CHECK([whether mkdir handles trailing dot],
54    [gl_cv_func_mkdir_trailing_dot_works],
55    [rm -rf conftest.dir
56      AC_RUN_IFELSE([AC_LANG_PROGRAM([[
57#       include <sys/types.h>
58#       include <sys/stat.h>
59]], [return !mkdir ("conftest.dir/./", 0700);])],
60      [gl_cv_func_mkdir_trailing_dot_works=yes],
61      [gl_cv_func_mkdir_trailing_dot_works=no],
62      [case "$host_os" in
63                        # Guess yes on glibc systems.
64         *-gnu* | gnu*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
65                        # Guess yes on musl systems.
66         *-musl*)       gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;;
67                        # Guess no on native Windows.
68         mingw*)        gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
69                        # If we don't know, assume the worst.
70         *)             gl_cv_func_mkdir_trailing_dot_works="guessing no" ;;
71       esac
72      ])
73    rm -rf conftest.dir
74    ]
75  )
76  case "$gl_cv_func_mkdir_trailing_dot_works" in
77    *yes) ;;
78    *)
79      REPLACE_MKDIR=1
80      AC_DEFINE([FUNC_MKDIR_DOT_BUG], [1], [Define to 1 if mkdir mistakenly
81        creates a directory given with a trailing dot component.])
82      ;;
83  esac
84])
85