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
63 AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
64 [Define if rename does not correctly handle slashes on the destination
65 argument, such as on Solaris 10 or NetBSD 1.6.])
68 dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
69 dnl Solaris 9 mistakenly allows rename("file/","name").
70 dnl FreeBSD 7.2 mistakenly allows rename("link-to-file/","name").
71 dnl These bugs require stripping trailing slash to avoid corrupting
72 dnl symlinks with a trailing slash.
73 AC_CACHE_CHECK([whether rename honors trailing slash on source],
74 [gl_cv_func_rename_slash_src_works],
75 [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
76 touch conftest.f && touch conftest.f1 && mkdir conftest.d1 ||
77 AC_MSG_ERROR([cannot create temporary files])
78 # Assume that if we have lstat, we can also check symlinks.
79 if test $ac_cv_func_lstat = yes; then
80 ln -s conftest.f conftest.lnk
88 if (rename ("conftest.f1/", "conftest.d3") == 0)
90 if (rename ("conftest.d1/", "conftest.d2") != 0)
93 if (rename ("conftest.lnk/", "conftest.f") == 0)
98 [gl_cv_func_rename_slash_src_works=yes],
99 [gl_cv_func_rename_slash_src_works=no],
100 dnl When crosscompiling, assume rename is broken.
101 [gl_cv_func_rename_slash_src_works="guessing no"])
102 rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
104 if test "x$gl_cv_func_rename_slash_src_works" != xyes; then
107 AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
108 [Define if rename does not correctly handle slashes on the source
109 argument, such as on Solaris 9 or cygwin 1.5.])
112 dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
113 dnl on rename("h1","h2").
114 dnl This bug requires stat'ting targets prior to attempting rename.
115 AC_CACHE_CHECK([whether rename manages hard links correctly],
116 [gl_cv_func_rename_link_works],
117 [rm -rf conftest.f conftest.f1
118 if touch conftest.f && ln conftest.f conftest.f1 &&
119 set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
127 if (rename ("conftest.f", "conftest.f1"))
129 if (unlink ("conftest.f1"))
131 if (rename ("conftest.f", "conftest.f"))
133 if (rename ("conftest.f1", "conftest.f1") == 0)
137 [gl_cv_func_rename_link_works=yes],
138 [gl_cv_func_rename_link_works=no],
139 dnl When crosscompiling, assume rename is broken.
140 [gl_cv_func_rename_link_works="guessing no"])
142 gl_cv_func_rename_link_works="guessing no"
144 rm -rf conftest.f conftest.f1
146 if test "x$gl_cv_func_rename_link_works" != xyes; then
149 AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
150 [Define if rename fails to leave hard links alone, as on NetBSD 1.6
154 dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
155 dnl mingw mistakenly forbids rename("dir1","dir2").
156 dnl These bugs require stripping trailing slash to avoid corrupting
157 dnl symlinks with a trailing slash.
158 AC_CACHE_CHECK([whether rename manages existing destinations correctly],
159 [gl_cv_func_rename_dest_works],
160 [rm -rf conftest.f conftest.d1 conftest.d2
161 touch conftest.f && mkdir conftest.d1 conftest.d2 ||
162 AC_MSG_ERROR([cannot create temporary files])
169 if (rename ("conftest.d1", "conftest.d2") != 0)
171 if (rename ("conftest.d2", "conftest.f") == 0)
175 [gl_cv_func_rename_dest_works=yes],
176 [gl_cv_func_rename_dest_works=no],
177 dnl When crosscompiling, assume rename is broken.
178 [gl_cv_func_rename_dest_works="guessing no"])
179 rm -rf conftest.f conftest.d1 conftest.d2
181 if test "x$gl_cv_func_rename_dest_works" != xyes; then
184 AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
185 [Define if rename does not work when the destination file exists,
186 as on Cygwin 1.5 or Windows.])