3 # Copyright (C) 2001, 2003, 2005-2006, 2009-2020 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.
8 dnl From Volker Borchert.
9 dnl Determine whether rename works for source file names with a trailing slash.
10 dnl The rename from SunOS 4.1.1_U1 doesn't.
12 dnl If it doesn't, then define RENAME_TRAILING_SLASH_BUG and arrange
13 dnl to compile the wrapper function.
16 AC_DEFUN([gl_FUNC_RENAME],
18 AC_REQUIRE([AC_CANONICAL_HOST])
19 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
20 AC_CHECK_FUNCS_ONCE([lstat])
22 dnl Solaris 11.3, AIX 7.1 mistakenly allow rename("file","name/").
23 dnl NetBSD 1.6 mistakenly forbids rename("dir","name/").
24 dnl FreeBSD 7.2 mistakenly allows rename("file","link-to-file/").
25 dnl The Solaris bug can be worked around without stripping
26 dnl trailing slash, while the NetBSD bug requires stripping;
27 dnl the two conditions can be distinguished by whether hard
28 dnl links are also broken.
29 AC_CACHE_CHECK([whether rename honors trailing slash on destination],
30 [gl_cv_func_rename_slash_dst_works],
31 [rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
32 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
33 AC_MSG_ERROR([cannot create temporary files])
34 # Assume that if we have lstat, we can also check symlinks.
35 if test $ac_cv_func_lstat = yes; then
36 ln -s conftest.f conftest.lnk
44 if (rename ("conftest.f1", "conftest.f2/") == 0)
46 if (rename ("conftest.d1", "conftest.d2/") != 0)
49 if (rename ("conftest.f", "conftest.lnk/") == 0)
54 [gl_cv_func_rename_slash_dst_works=yes],
55 [gl_cv_func_rename_slash_dst_works=no],
56 dnl When crosscompiling, assume rename is broken.
58 # Guess yes on Linux systems.
59 linux-* | linux) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
60 # Guess yes on glibc systems.
61 *-gnu*) gl_cv_func_rename_slash_dst_works="guessing yes" ;;
62 # Guess no on native Windows.
63 mingw*) gl_cv_func_rename_slash_dst_works="guessing no" ;;
64 # If we don't know, obey --enable-cross-guesses.
65 *) gl_cv_func_rename_slash_dst_works="$gl_cross_guess_normal" ;;
68 rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
70 case "$gl_cv_func_rename_slash_dst_works" in
74 AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
75 [Define if rename does not correctly handle slashes on the destination
76 argument, such as on Solaris 11 or NetBSD 1.6.])
80 dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
81 dnl Solaris 9 mistakenly allows rename("file/","name").
82 dnl FreeBSD 7.2 mistakenly allows rename("link-to-file/","name").
83 dnl These bugs require stripping trailing slash to avoid corrupting
84 dnl symlinks with a trailing slash.
85 AC_CACHE_CHECK([whether rename honors trailing slash on source],
86 [gl_cv_func_rename_slash_src_works],
87 [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
88 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
89 AC_MSG_ERROR([cannot create temporary files])
90 # Assume that if we have lstat, we can also check symlinks.
91 if test $ac_cv_func_lstat = yes; then
92 ln -s conftest.f conftest.lnk
100 if (rename ("conftest.f1/", "conftest.d3") == 0)
102 if (rename ("conftest.d1/", "conftest.d2") != 0)
105 if (rename ("conftest.lnk/", "conftest.f") == 0)
110 [gl_cv_func_rename_slash_src_works=yes],
111 [gl_cv_func_rename_slash_src_works=no],
112 dnl When crosscompiling, assume rename is broken.
114 # Guess yes on Linux systems.
115 linux-* | linux) gl_cv_func_rename_slash_src_works="guessing yes" ;;
116 # Guess yes on glibc systems.
117 *-gnu*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
118 # Guess yes on native Windows.
119 mingw*) gl_cv_func_rename_slash_src_works="guessing yes" ;;
120 # If we don't know, obey --enable-cross-guesses.
121 *) gl_cv_func_rename_slash_src_works="$gl_cross_guess_normal" ;;
124 rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
126 case "$gl_cv_func_rename_slash_src_works" in
130 AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
131 [Define if rename does not correctly handle slashes on the source
132 argument, such as on Solaris 9 or cygwin 1.5.])
136 dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
137 dnl on rename("h1","h2").
138 dnl This bug requires stat'ting targets prior to attempting rename.
139 AC_CHECK_FUNCS_ONCE([link])
140 AC_CACHE_CHECK([whether rename manages hard links correctly],
141 [gl_cv_func_rename_link_works],
142 [if test $ac_cv_func_link = yes; then
143 if test $cross_compiling != yes; then
144 rm -rf conftest.f conftest.f1 conftest.f2
145 if touch conftest.f conftest.f2 && ln conftest.f conftest.f1 &&
146 set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
155 if (rename ("conftest.f", "conftest.f1"))
157 if (unlink ("conftest.f1"))
160 /* Allow either the POSIX-required behavior, where the
161 previous rename kept conftest.f, or the (better) NetBSD
162 behavior, where it removed conftest.f. */
163 if (rename ("conftest.f", "conftest.f") != 0
167 if (rename ("conftest.f1", "conftest.f1") == 0)
169 if (rename ("conftest.f2", "conftest.f2") != 0)
173 [gl_cv_func_rename_link_works=yes],
174 [gl_cv_func_rename_link_works=no],
175 [dnl We don't get here.
179 gl_cv_func_rename_link_works="guessing no"
181 rm -rf conftest.f conftest.f1 conftest.f2
183 dnl When crosscompiling, assume rename is broken.
185 # Guess yes on Linux systems.
186 linux-* | linux) gl_cv_func_rename_link_works="guessing yes" ;;
187 # Guess yes on glibc systems.
188 *-gnu*) gl_cv_func_rename_link_works="guessing yes" ;;
189 # Guess yes on native Windows.
190 mingw*) gl_cv_func_rename_link_works="guessing yes" ;;
191 # If we don't know, obey --enable-cross-guesses.
192 *) gl_cv_func_rename_link_works="$gl_cross_guess_normal" ;;
196 gl_cv_func_rename_link_works=yes
199 case "$gl_cv_func_rename_link_works" in
203 AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
204 [Define if rename fails to leave hard links alone, as on NetBSD 1.6
209 dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
210 dnl mingw mistakenly forbids rename("dir1","dir2").
211 dnl These bugs require stripping trailing slash to avoid corrupting
212 dnl symlinks with a trailing slash.
213 AC_CACHE_CHECK([whether rename manages existing destinations correctly],
214 [gl_cv_func_rename_dest_works],
215 [rm -rf conftest.f conftest.d1 conftest.d2
216 touch conftest.f && mkdir conftest.d1 conftest.d2 ||
217 AC_MSG_ERROR([cannot create temporary files])
224 if (rename ("conftest.d1", "conftest.d2") != 0)
226 if (rename ("conftest.d2", "conftest.f") == 0)
230 [gl_cv_func_rename_dest_works=yes],
231 [gl_cv_func_rename_dest_works=no],
232 dnl When crosscompiling, assume rename is broken.
234 # Guess yes on Linux systems.
235 linux-* | linux) gl_cv_func_rename_dest_works="guessing yes" ;;
236 # Guess yes on glibc systems.
237 *-gnu*) gl_cv_func_rename_dest_works="guessing yes" ;;
238 # Guess no on native Windows.
239 mingw*) gl_cv_func_rename_dest_works="guessing no" ;;
240 # If we don't know, obey --enable-cross-guesses.
241 *) gl_cv_func_rename_dest_works="$gl_cross_guess_normal" ;;
244 rm -rf conftest.f conftest.d1 conftest.d2
246 case "$gl_cv_func_rename_dest_works" in
250 AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
251 [Define if rename does not work when the destination file exists,
252 as on Cygwin 1.5 or Windows.])