3 # Copyright (C) 2001, 2003, 2005-2006, 2009-2011 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 10, 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 $ac_cv_func_lstat = yes; then
36 ln -s conftest.f conftest.lnk
44 if (rename ("conftest.f1", "conftest.f2/") == 0)
46 if (rename ("conftest.d1", "conftest.d2/") != 0)
49 if (rename ("conftest.f", "conftest.lnk/") == 0)
54 [gl_cv_func_rename_slash_dst_works=yes],
55 [gl_cv_func_rename_slash_dst_works=no],
56 dnl When crosscompiling, assume rename is broken.
57 [gl_cv_func_rename_slash_dst_works="guessing no"])
58 rm -rf conftest.f conftest.f1 conftest.f2 conftest.d1 conftest.d2 conftest.lnk
60 if test "x$gl_cv_func_rename_slash_dst_works" != xyes; then
62 AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
63 [Define if rename does not correctly handle slashes on the destination
64 argument, such as on Solaris 10 or NetBSD 1.6.])
67 dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
68 dnl Solaris 9 mistakenly allows rename("file/","name").
69 dnl FreeBSD 7.2 mistakenly allows rename("link-to-file/","name").
70 dnl These bugs require stripping trailing slash to avoid corrupting
71 dnl symlinks with a trailing slash.
72 AC_CACHE_CHECK([whether rename honors trailing slash on source],
73 [gl_cv_func_rename_slash_src_works],
74 [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
75 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
76 AC_MSG_ERROR([cannot create temporary files])
77 # Assume that if we have lstat, we can also check symlinks.
78 if test $ac_cv_func_lstat = yes; then
79 ln -s conftest.f conftest.lnk
87 if (rename ("conftest.f1/", "conftest.d3") == 0)
89 if (rename ("conftest.d1/", "conftest.d2") != 0)
92 if (rename ("conftest.lnk/", "conftest.f") == 0)
97 [gl_cv_func_rename_slash_src_works=yes],
98 [gl_cv_func_rename_slash_src_works=no],
99 dnl When crosscompiling, assume rename is broken.
100 [gl_cv_func_rename_slash_src_works="guessing no"])
101 rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
103 if test "x$gl_cv_func_rename_slash_src_works" != xyes; then
105 AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
106 [Define if rename does not correctly handle slashes on the source
107 argument, such as on Solaris 9 or cygwin 1.5.])
110 dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
111 dnl on rename("h1","h2").
112 dnl This bug requires stat'ting targets prior to attempting rename.
113 AC_CACHE_CHECK([whether rename manages hard links correctly],
114 [gl_cv_func_rename_link_works],
115 [rm -rf conftest.f conftest.f1
116 if touch conftest.f && ln conftest.f conftest.f1 &&
117 set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
125 if (rename ("conftest.f", "conftest.f1"))
127 if (unlink ("conftest.f1"))
129 if (rename ("conftest.f", "conftest.f"))
131 if (rename ("conftest.f1", "conftest.f1") == 0)
135 [gl_cv_func_rename_link_works=yes],
136 [gl_cv_func_rename_link_works=no],
137 dnl When crosscompiling, assume rename is broken.
138 [gl_cv_func_rename_link_works="guessing no"])
140 gl_cv_func_rename_link_works="guessing no"
142 rm -rf conftest.f conftest.f1
144 if test "x$gl_cv_func_rename_link_works" != xyes; then
146 AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
147 [Define if rename fails to leave hard links alone, as on NetBSD 1.6
151 dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
152 dnl mingw mistakenly forbids rename("dir1","dir2").
153 dnl These bugs require stripping trailing slash to avoid corrupting
154 dnl symlinks with a trailing slash.
155 AC_CACHE_CHECK([whether rename manages existing destinations correctly],
156 [gl_cv_func_rename_dest_works],
157 [rm -rf conftest.f conftest.d1 conftest.d2
158 touch conftest.f && mkdir conftest.d1 conftest.d2 ||
159 AC_MSG_ERROR([cannot create temporary files])
166 if (rename ("conftest.d1", "conftest.d2") != 0)
168 if (rename ("conftest.d2", "conftest.f") == 0)
172 [gl_cv_func_rename_dest_works=yes],
173 [gl_cv_func_rename_dest_works=no],
174 dnl When crosscompiling, assume rename is broken.
175 [gl_cv_func_rename_dest_works="guessing no"])
176 rm -rf conftest.f conftest.d1 conftest.d2
178 if test "x$gl_cv_func_rename_dest_works" != xyes; then
180 AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
181 [Define if rename does not work when the destination file exists,
182 as on Cygwin 1.5 or Windows.])