mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
c539261ef4
Added missing Cygwin packages to readme.
82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
/* Provide relocatable packages.
|
|
Copyright (C) 2003, 2005, 2008, 2015-2016 Free Software Foundation, Inc.
|
|
Written by Bruno Haible <bruno@clisp.org>, 2003.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _RELOCATABLE_H
|
|
#define _RELOCATABLE_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
|
|
/* This can be enabled through the configure --enable-relocatable option. */
|
|
#if ENABLE_RELOCATABLE
|
|
|
|
/* When building a DLL, we must export some functions. Note that because
|
|
this is a private .h file, we don't need to use __declspec(dllimport)
|
|
in any case. */
|
|
#if HAVE_VISIBILITY && BUILDING_DLL
|
|
# define RELOCATABLE_DLL_EXPORTED __attribute__((__visibility__("default")))
|
|
#elif defined _MSC_VER && BUILDING_DLL
|
|
# define RELOCATABLE_DLL_EXPORTED __declspec(dllexport)
|
|
#else
|
|
# define RELOCATABLE_DLL_EXPORTED
|
|
#endif
|
|
|
|
/* Sets the original and the current installation prefix of the package.
|
|
Relocation simply replaces a pathname starting with the original prefix
|
|
by the corresponding pathname with the current prefix instead. Both
|
|
prefixes should be directory names without trailing slash (i.e. use ""
|
|
instead of "/"). */
|
|
extern RELOCATABLE_DLL_EXPORTED void
|
|
set_relocation_prefix (const char *orig_prefix,
|
|
const char *curr_prefix);
|
|
|
|
/* Returns the pathname, relocated according to the current installation
|
|
directory.
|
|
The returned string is either PATHNAME unmodified or a freshly allocated
|
|
string that you can free with free() after casting it to 'char *'. */
|
|
extern const char * relocate (const char *pathname);
|
|
|
|
/* Memory management: relocate() potentially allocates memory, because it has
|
|
to construct a fresh pathname. If this is a problem because your program
|
|
calls relocate() frequently, think about caching the result. Or free the
|
|
return value if it was different from the argument pathname. */
|
|
|
|
/* Convenience function:
|
|
Computes the current installation prefix, based on the original
|
|
installation prefix, the original installation directory of a particular
|
|
file, and the current pathname of this file.
|
|
Returns it, freshly allocated. Returns NULL upon failure. */
|
|
extern char * compute_curr_prefix (const char *orig_installprefix,
|
|
const char *orig_installdir,
|
|
const char *curr_pathname);
|
|
|
|
#else
|
|
|
|
/* By default, we use the hardwired pathnames. */
|
|
#define relocate(pathname) (pathname)
|
|
|
|
#endif
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _RELOCATABLE_H */
|