|
0
|
1 /* Provide relocatable packages.
|
|
|
2 Copyright (C) 2003 Free Software Foundation, Inc.
|
|
|
3 Written by Bruno Haible <bruno@clisp.org>, 2003.
|
|
|
4
|
|
|
5 This program is free software; you can redistribute it and/or modify it
|
|
|
6 under the terms of the GNU Library General Public License as published
|
|
|
7 by the Free Software Foundation; either version 2, or (at your option)
|
|
|
8 any later version.
|
|
|
9
|
|
|
10 This program is distributed in the hope that it will be useful,
|
|
|
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
13 Library General Public License for more details.
|
|
|
14
|
|
|
15 You should have received a copy of the GNU Library General Public
|
|
|
16 License along with this program; if not, write to the Free Software
|
|
|
17 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
|
|
|
18 USA. */
|
|
|
19
|
|
|
20 #ifndef _RELOCATABLE_H
|
|
|
21 #define _RELOCATABLE_H
|
|
|
22
|
|
|
23 /* This can be enabled through the configure --enable-relocatable option. */
|
|
|
24 #if ENABLE_RELOCATABLE
|
|
|
25
|
|
|
26 /* When building a DLL, we must export some functions. Note that because
|
|
|
27 this is a private .h file, we don't need to use __declspec(dllimport)
|
|
|
28 in any case. */
|
|
|
29 #if defined _MSC_VER && BUILDING_DLL
|
|
|
30 # define RELOCATABLE_DLL_EXPORTED __declspec(dllexport)
|
|
|
31 #else
|
|
|
32 # define RELOCATABLE_DLL_EXPORTED
|
|
|
33 #endif
|
|
|
34
|
|
|
35 /* Sets the original and the current installation prefix of the package.
|
|
|
36 Relocation simply replaces a pathname starting with the original prefix
|
|
|
37 by the corresponding pathname with the current prefix instead. Both
|
|
|
38 prefixes should be directory names without trailing slash (i.e. use ""
|
|
|
39 instead of "/"). */
|
|
|
40 extern RELOCATABLE_DLL_EXPORTED void
|
|
|
41 set_relocation_prefix (const char *orig_prefix,
|
|
|
42 const char *curr_prefix);
|
|
|
43
|
|
|
44 /* Returns the pathname, relocated according to the current installation
|
|
|
45 directory. */
|
|
|
46 extern const char * relocate (const char *pathname);
|
|
|
47
|
|
|
48 /* Memory management: relocate() leaks memory, because it has to construct
|
|
|
49 a fresh pathname. If this is a problem because your program calls
|
|
|
50 relocate() frequently, think about caching the result. */
|
|
|
51
|
|
|
52 /* Convenience function:
|
|
|
53 Computes the current installation prefix, based on the original
|
|
|
54 installation prefix, the original installation directory of a particular
|
|
|
55 file, and the current pathname of this file. Returns NULL upon failure. */
|
|
|
56 extern const char * compute_curr_prefix (const char *orig_installprefix,
|
|
|
57 const char *orig_installdir,
|
|
|
58 const char *curr_pathname);
|
|
|
59
|
|
|
60 #else
|
|
|
61
|
|
|
62 /* By default, we use the hardwired pathnames. */
|
|
|
63 #define relocate(pathname) (pathname)
|
|
|
64
|
|
|
65 #endif
|
|
|
66
|
|
|
67 #endif /* _RELOCATABLE_H */
|
