1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
# serial 33
# Copyright (C) 2001, 2003, 2005-2006, 2009-2021 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
dnl From Volker Borchert.
dnl Determine whether rename works for source file names with a trailing slash.
dnl The rename from SunOS 4.1.1_U1 doesn't.
dnl
dnl If it doesn't, then define RENAME_TRAILING_SLASH_BUG and arrange
dnl to compile the wrapper function.
dnl
AC_DEFUN([gl_FUNC_RENAME],
[
AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
AC_CHECK_FUNCS_ONCE([lstat])
dnl Solaris 11.3, AIX 7.1 mistakenly allow rename("file","name/").
dnl NetBSD 1.6 mistakenly forbids rename("dir","name/").
dnl FreeBSD 7.2 mistakenly allows rename("file","link-to-file/").
dnl The Solaris bug can be worked around without stripping
dnl trailing slash, while the NetBSD bug requires stripping;
dnl the two conditions can be distinguished by whether hard
dnl links are also broken.
AC_CACHE_CHECK([whether rename honors trailing slash on destination],
[gl_cv_func_rename_slash_dst_works],
[rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
AC_MSG_ERROR([cannot create temporary files])
# Assume that if we have lstat, we can also check symlinks.
if test $ac_cv_func_lstat = yes; then
ln -s conftest.f conftest.lnk
fi
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
# include <stdio.h>
# include <stdlib.h>
]],
[[int result = 0;
if (rename ("conftest.f1", "conftest.f2/") == 0)
result |= 1;
if (rename ("conftest.d1", "conftest.d2/") != 0)
result |= 2;
#if HAVE_LSTAT
if (rename ("conftest.f", "conftest.lnk/") == 0)
result |= 4;
#endif
return result;
]])],
[gl_cv_func_rename_slash_dst_works=yes],
[gl_cv_func_rename_slash_dst_works=no],
dnl When crosscompiling, assume rename is broken.
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
# Guess no on native Windows.
mingw*) gl_cv_func_rename_slash_dst_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_rename_slash_dst_works="$gl_cross_guess_normal" ;;
esac
])
rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
])
case "$gl_cv_func_rename_slash_dst_works" in
*yes) ;;
*)
REPLACE_RENAME=1
AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
[Define if rename does not correctly handle slashes on the destination
argument, such as on Solaris 11 or NetBSD 1.6.])
;;
esac
dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
dnl Solaris 9 mistakenly allows rename("file/","name").
dnl FreeBSD 7.2 mistakenly allows rename("link-to-file/","name").
dnl These bugs require stripping trailing slash to avoid corrupting
dnl symlinks with a trailing slash.
AC_CACHE_CHECK([whether rename honors trailing slash on source],
[gl_cv_func_rename_slash_src_works],
[rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
AC_MSG_ERROR([cannot create temporary files])
# Assume that if we have lstat, we can also check symlinks.
if test $ac_cv_func_lstat = yes; then
ln -s conftest.f conftest.lnk
fi
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
# include <stdio.h>
# include <stdlib.h>
]],
[[int result = 0;
if (rename ("conftest.f1/", "conftest.d3") == 0)
result |= 1;
if (rename ("conftest.d1/", "conftest.d2") != 0)
result |= 2;
#if HAVE_LSTAT
if (rename ("conftest.lnk/", "conftest.f") == 0)
result |= 4;
#endif
return result;
]])],
[gl_cv_func_rename_slash_src_works=yes],
[gl_cv_func_rename_slash_src_works=no],
dnl When crosscompiling, assume rename is broken.
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_rename_slash_src_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
# Guess yes on native Windows.
mingw*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_rename_slash_src_works="$gl_cross_guess_normal" ;;
esac
])
rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
])
case "$gl_cv_func_rename_slash_src_works" in
*yes) ;;
*)
REPLACE_RENAME=1
AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
[Define if rename does not correctly handle slashes on the source
argument, such as on Solaris 9 or cygwin 1.5.])
;;
esac
dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
dnl on rename("h1","h2").
dnl This bug requires stat'ting targets prior to attempting rename.
AC_CHECK_FUNCS_ONCE([link])
AC_CACHE_CHECK([whether rename manages hard links correctly],
[gl_cv_func_rename_link_works],
[if test $ac_cv_func_link = yes; then
if test $cross_compiling != yes; then
rm -rf conftest.f conftest.f1 conftest.f2
if touch conftest.f conftest.f2 && ln conftest.f conftest.f1 &&
set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
# include <errno.h>
# include <stdio.h>
# include <stdlib.h>
# include <unistd.h>
]GL_MDA_DEFINES],
[[int result = 0;
if (rename ("conftest.f", "conftest.f1"))
result |= 1;
if (unlink ("conftest.f1"))
result |= 2;
/* Allow either the POSIX-required behavior, where the
previous rename kept conftest.f, or the (better) NetBSD
behavior, where it removed conftest.f. */
if (rename ("conftest.f", "conftest.f") != 0
&& errno != ENOENT)
result |= 4;
if (rename ("conftest.f1", "conftest.f1") == 0)
result |= 8;
if (rename ("conftest.f2", "conftest.f2") != 0)
result |= 16;
return result;
]])],
[gl_cv_func_rename_link_works=yes],
[gl_cv_func_rename_link_works=no],
[dnl We don't get here.
:
])
else
gl_cv_func_rename_link_works="guessing no"
fi
rm -rf conftest.f conftest.f1 conftest.f2
else
dnl When crosscompiling, assume rename is broken.
case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_rename_link_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_rename_link_works="guessing yes" ;;
# Guess yes on native Windows.
mingw*) gl_cv_func_rename_link_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_rename_link_works="$gl_cross_guess_normal" ;;
esac
fi
else
gl_cv_func_rename_link_works=yes
fi
])
case "$gl_cv_func_rename_link_works" in
*yes) ;;
*)
REPLACE_RENAME=1
AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
[Define if rename fails to leave hard links alone, as on NetBSD 1.6
or Cygwin 1.5.])
;;
esac
dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
dnl mingw mistakenly forbids rename("dir1","dir2").
dnl These bugs require stripping trailing slash to avoid corrupting
dnl symlinks with a trailing slash.
AC_CACHE_CHECK([whether rename manages existing destinations correctly],
[gl_cv_func_rename_dest_works],
[rm -rf conftest.f conftest.d1 conftest.d2
touch conftest.f && mkdir conftest.d1 conftest.d2 ||
AC_MSG_ERROR([cannot create temporary files])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
# include <stdio.h>
# include <stdlib.h>
]],
[[int result = 0;
if (rename ("conftest.d1", "conftest.d2") != 0)
result |= 1;
if (rename ("conftest.d2", "conftest.f") == 0)
result |= 2;
return result;
]])],
[gl_cv_func_rename_dest_works=yes],
[gl_cv_func_rename_dest_works=no],
dnl When crosscompiling, assume rename is broken.
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_rename_dest_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_rename_dest_works="guessing yes" ;;
# Guess no on native Windows.
mingw*) gl_cv_func_rename_dest_works="guessing no" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_rename_dest_works="$gl_cross_guess_normal" ;;
esac
])
rm -rf conftest.f conftest.d1 conftest.d2
])
case "$gl_cv_func_rename_dest_works" in
*yes) ;;
*)
REPLACE_RENAME=1
AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
[Define if rename does not work when the destination file exists,
as on Cygwin 1.5 or Windows.])
;;
esac
])
|
