140 lines
5.2 KiB
C
140 lines
5.2 KiB
C
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/*
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* BinReloc - a library for creating relocatable executables
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* Written by: Mike Hearn <mike@theoretic.com>
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* Hongli Lai <h.lai@chello.nl>
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* http://autopackage.org/
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*
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* This source code is public domain. You can relicense this code
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* under whatever license you want.
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*
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* See http://autopackage.org/docs/binreloc/ for
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* more information and how to use this.
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*
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* NOTE: if you're using C++ and are getting "undefined reference
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* to br_*", try renaming prefix.c to prefix.cpp
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*/
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#ifndef _PREFIX_H_
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#define _PREFIX_H_
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* WARNING, BEFORE YOU MODIFY PREFIX.C:
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*
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* If you make changes to any of the functions in prefix.c, you MUST
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* change the BR_NAMESPACE macro.
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* This way you can avoid symbol table conflicts with other libraries
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* that also happen to use BinReloc.
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*
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* Example:
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* #define BR_NAMESPACE(funcName) foobar_ ## funcName
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* --> expands br_locate to foobar_br_locate
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*/
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#undef BR_NAMESPACE
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#define BR_NAMESPACE(funcName) funcName
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#ifdef ENABLE_BINRELOC
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#define br_thread_local_store BR_NAMESPACE(br_thread_local_store)
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#define br_locate BR_NAMESPACE(br_locate)
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#define br_locate_prefix BR_NAMESPACE(br_locate_prefix)
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#define br_prepend_prefix BR_NAMESPACE(br_prepend_prefix)
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#ifndef BR_NO_MACROS
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/* These are convience macros that replace the ones usually used
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in Autoconf/Automake projects */
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#undef SELFPATH
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#undef PREFIX
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#undef PREFIXDIR
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#undef BINDIR
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#undef SBINDIR
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#undef DATADIR
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#undef LIBDIR
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#undef LIBEXECDIR
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#undef ETCDIR
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#undef SYSCONFDIR
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#undef CONFDIR
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#undef LOCALEDIR
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#define SELFPATH (br_thread_local_store (br_locate ((void *) "")))
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#define PREFIX (br_thread_local_store (br_locate_prefix ((void *) "")))
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#define PREFIXDIR (br_thread_local_store (br_locate_prefix ((void *) "")))
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#define BINDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/bin")))
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#define SBINDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/sbin")))
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#define DATADIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/share")))
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#define LIBDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/lib")))
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#define LIBEXECDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/libexec")))
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#define ETCDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
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#define SYSCONFDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
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#define CONFDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
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#define LOCALEDIR (br_thread_local_store (br_prepend_prefix ((void *) "", "/share/locale")))
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#endif /* BR_NO_MACROS */
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/* The following functions are used internally by BinReloc
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and shouldn't be used directly in applications. */
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char *br_locate (void *symbol);
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char *br_locate_prefix (void *symbol);
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char *br_prepend_prefix (void *symbol, char *path);
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#endif /* ENABLE_BINRELOC */
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const char *br_thread_local_store (char *str);
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/* These macros and functions are not guarded by the ENABLE_BINRELOC
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* macro because they are portable. You can use these functions.
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*/
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#define br_strcat BR_NAMESPACE(br_strcat)
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#define br_extract_dir BR_NAMESPACE(br_extract_dir)
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#define br_extract_prefix BR_NAMESPACE(br_extract_prefix)
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#define br_set_locate_fallback_func BR_NAMESPACE(br_set_locate_fallback_func)
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#ifndef BR_NO_MACROS
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#ifndef ENABLE_BINRELOC
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#define BR_SELFPATH(suffix) SELFPATH suffix
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#define BR_PREFIX(suffix) PREFIX suffix
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#define BR_PREFIXDIR(suffix) BR_PREFIX suffix
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#define BR_BINDIR(suffix) BINDIR suffix
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#define BR_SBINDIR(suffix) SBINDIR suffix
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#define BR_DATADIR(suffix) DATADIR suffix
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#define BR_LIBDIR(suffix) LIBDIR suffix
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#define BR_LIBEXECDIR(suffix) LIBEXECDIR suffix
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#define BR_ETCDIR(suffix) ETCDIR suffix
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#define BR_SYSCONFDIR(suffix) SYSCONFDIR suffix
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#define BR_CONFDIR(suffix) CONFDIR suffix
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#define BR_LOCALEDIR(suffix) LOCALEDIR suffix
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#else
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#define BR_SELFPATH(suffix) (br_thread_local_store (br_strcat (SELFPATH, suffix)))
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#define BR_PREFIX(suffix) (br_thread_local_store (br_strcat (PREFIX, suffix)))
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#define BR_PREFIXDIR(suffix) (br_thread_local_store (br_strcat (BR_PREFIX, suffix)))
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#define BR_BINDIR(suffix) (br_thread_local_store (br_strcat (BINDIR, suffix)))
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#define BR_SBINDIR(suffix) (br_thread_local_store (br_strcat (SBINDIR, suffix)))
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#define BR_DATADIR(suffix) (br_thread_local_store (br_strcat (DATADIR, suffix)))
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#define BR_LIBDIR(suffix) (br_thread_local_store (br_strcat (LIBDIR, suffix)))
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#define BR_LIBEXECDIR(suffix) (br_thread_local_store (br_strcat (LIBEXECDIR, suffix)))
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#define BR_ETCDIR(suffix) (br_thread_local_store (br_strcat (ETCDIR, suffix)))
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#define BR_SYSCONFDIR(suffix) (br_thread_local_store (br_strcat (SYSCONFDIR, suffix)))
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#define BR_CONFDIR(suffix) (br_thread_local_store (br_strcat (CONFDIR, suffix)))
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#define BR_LOCALEDIR(suffix) (br_thread_local_store (br_strcat (LOCALEDIR, suffix)))
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#endif
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#endif
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char *br_strcat (const char *str1, const char *str2);
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char *br_extract_dir (const char *path);
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char *br_extract_prefix(const char *path);
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typedef char *(*br_locate_fallback_func) (void *symbol, void *data);
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void br_set_locate_fallback_func (br_locate_fallback_func func, void *data);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _PREFIX_H_ */
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