3 # Copyright (C) 2001, 2003, 2005, 2006, 2009 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])
21 dnl Solaris 10 mistakenly allows rename("file","name/").
22 dnl NetBSD 1.6 mistakenly forbids rename("dir","name/").
23 dnl The Solaris bug can be worked around without stripping
24 dnl trailing slash, while the NetBSD bug requires stripping;
25 dnl the two conditions can be distinguished by whether hard
26 dnl links are also broken.
27 AC_CACHE_CHECK([whether rename honors trailing slash on destination],
28 [gl_cv_func_rename_slash_dst_works],
29 [rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2
30 touch conftest.f && mkdir conftest.d1 ||
31 AC_MSG_ERROR([cannot create temporary files])
32 AC_RUN_IFELSE([AC_LANG_PROGRAM([[
35 ]], [if (rename ("conftest.f", "conftest.f1/") == 0) return 1;
36 if (rename ("conftest.d1", "conftest.d2/") != 0) return 2;])],
37 [gl_cv_func_rename_slash_dst_works=yes],
38 [gl_cv_func_rename_slash_dst_works=no],
39 dnl When crosscompiling, assume rename is broken.
40 [gl_cv_func_rename_slash_dst_works="guessing no"])
41 rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2
43 if test "x$gl_cv_func_rename_slash_dst_works" != xyes; then
46 AC_DEFINE([RENAME_TRAILING_SLASH_DEST_BUG], [1],
47 [Define if rename does not correctly handle slashes on the destination
48 argument, such as on Solaris 10 or NetBSD 1.6.])
51 dnl SunOS 4.1.1_U1 mistakenly forbids rename("dir/","name").
52 dnl Solaris 9 mistakenly allows rename("file/","name").
53 dnl These bugs require stripping trailing slash to avoid corrupting
54 dnl symlinks with a trailing slash.
55 AC_CACHE_CHECK([whether rename honors trailing slash on source],
56 [gl_cv_func_rename_slash_src_works],
57 [rm -rf conftest.f conftest.d1 conftest.d2
58 touch conftest.f && mkdir conftest.d1 ||
59 AC_MSG_ERROR([cannot create temporary files])
60 AC_RUN_IFELSE([AC_LANG_PROGRAM([[
63 ]], [if (rename ("conftest.f/", "conftest.d2") == 0) return 1;
64 if (rename ("conftest.d1/", "conftest.d2") != 0) return 2;])],
65 [gl_cv_func_rename_slash_src_works=yes],
66 [gl_cv_func_rename_slash_src_works=no],
67 dnl When crosscompiling, assume rename is broken.
68 [gl_cv_func_rename_slash_src_works="guessing no"])
69 rm -rf conftest.f conftest.d1 conftest.d2
71 if test "x$gl_cv_func_rename_slash_src_works" != xyes; then
74 AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
75 [Define if rename does not correctly handle slashes on the source
76 argument, such as on Solaris 9 or cygwin 1.5.])
79 dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
80 dnl on rename("h1","h2").
81 dnl This bug requires stat'ting targets prior to attempting rename.
82 AC_CACHE_CHECK([whether rename manages hard links correctly],
83 [gl_cv_func_rename_link_works],
84 [rm -rf conftest.f conftest.f1
85 if touch conftest.f && ln conftest.f conftest.f1 &&
86 set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
87 AC_RUN_IFELSE([AC_LANG_PROGRAM([[
91 ]], [if (rename ("conftest.f", "conftest.f1")) return 1;
92 if (unlink ("conftest.f1")) return 2;
93 if (rename ("conftest.f", "conftest.f")) return 3;
94 if (rename ("conftest.f1", "conftest.f1") == 0) return 4;])],
95 [gl_cv_func_rename_link_works=yes],
96 [gl_cv_func_rename_link_works=no],
97 dnl When crosscompiling, assume rename is broken.
98 [gl_cv_func_rename_link_works="guessing no"])
100 gl_cv_func_rename_link_works="guessing no"
102 rm -rf conftest.f conftest.f1
104 if test "x$gl_cv_func_rename_link_works" != xyes; then
107 AC_DEFINE([RENAME_HARD_LINK_BUG], [1],
108 [Define if rename fails to leave hard links alone, as on NetBSD 1.6
112 dnl Cygwin 1.5.x mistakenly allows rename("dir","file").
113 dnl mingw mistakenly forbids rename("dir1","dir2").
114 dnl These bugs require stripping trailing slash to avoid corrupting
115 dnl symlinks with a trailing slash.
116 AC_CACHE_CHECK([whether rename manages existing destinations correctly],
117 [gl_cv_func_rename_dest_works],
118 [rm -rf conftest.f conftest.d1 conftest.d2
119 touch conftest.f && mkdir conftest.d1 conftest.d2 ||
120 AC_MSG_ERROR([cannot create temporary files])
121 AC_RUN_IFELSE([AC_LANG_PROGRAM([[
124 ]], [if (rename ("conftest.d1", "conftest.d2") != 0) return 1;
125 if (rename ("conftest.d2", "conftest.f") == 0) return 2;])],
126 [gl_cv_func_rename_dest_works=yes],
127 [gl_cv_func_rename_dest_works=no],
128 dnl When crosscompiling, assume rename is broken.
129 [gl_cv_func_rename_dest_works="guessing no"])
130 rm -rf conftest.f conftest.d1 conftest.d2
132 if test "x$gl_cv_func_rename_dest_works" != xyes; then
135 AC_DEFINE([RENAME_DEST_EXISTS_BUG], [1],
136 [Define if rename does not work when the destination file exists,
137 as on Cygwin 1.5 or Windows.])