src/prefix.h

   1 /*
   2  * BinReloc - a library for creating relocatable executables
   3  * Written by: Mike Hearn <mike@theoretic.com>
   4  *             Hongli Lai <h.lai@chello.nl>
   5  * http://autopackage.org/
   6  *
   7  * This source code is public domain. You can relicense this code
   8  * under whatever license you want.
   9  *
  10  * See http://autopackage.org/docs/binreloc/ for
  11  * more information and how to use this.
  12  *
  13  * NOTE: if you're using C++ and are getting "undefined reference
  14  * to br_*", try renaming prefix.c to prefix.cpp
  15  */
  16
  17 #ifndef _PREFIX_H_
  18 #define _PREFIX_H_
  19
  20
  21 /*
  22  * enrico - all the code below is only compiled and used if ENABLE_BINRELOC is set in config.h,
  23  *          this only happens if configure option --enable-binreloc was used
  24  */
  25 #ifdef ENABLE_BINRELOC
  26
  27
  28 /* WARNING, BEFORE YOU MODIFY PREFIX.C:
  29  *
  30  * If you make changes to any of the functions in prefix.c, you MUST
  31  * change the BR_NAMESPACE macro.
  32  * This way you can avoid symbol table conflicts with other libraries
  33  * that also happen to use BinReloc.
  34  *
  35  * Example:
  36  * #define BR_NAMESPACE(funcName) foobar_ ## funcName
  37  * --> expands br_locate to foobar_br_locate
  38  */
  39 #undef BR_NAMESPACE
  40 #define BR_NAMESPACE(funcName) geany_ ## funcName
  41
  42
  43 #define br_thread_local_store BR_NAMESPACE(br_thread_local_store)
  44 #define br_locate BR_NAMESPACE(br_locate)
  45 #define br_locate_prefix BR_NAMESPACE(br_locate_prefix)
  46 #define br_prepend_prefix BR_NAMESPACE(br_prepend_prefix)
  47
  48 #ifndef BR_NO_MACROS
  49         /* These are convience macros that replace the ones usually used
  50            in Autoconf/Automake projects */
  51         #undef SELFPATH
  52         #undef PREFIX
  53         #undef PREFIXDIR
  54         #undef BINDIR
  55         #undef SBINDIR
  56         #undef DATADIR
  57         #undef LIBDIR
  58         #undef LIBEXECDIR
  59         #undef ETCDIR
  60         #undef SYSCONFDIR
  61         #undef CONFDIR
  62         #undef LOCALEDIR
  63         #undef GEANY_PREFIX
  64         #undef GEANY_DATADIR
  65         #undef GEANY_LIBDIR
  66         #undef GEANY_DOCDIR
  67         #undef GEANY_LOCALEDIR
  68
  69         #define SELFPATH        (br_thread_local_store (br_locate ((void *) "")))
  70         #define PREFIXDIR       (br_thread_local_store (br_locate_prefix ((void *) "")))
  71         #define BINDIR          (br_thread_local_store (br_prepend_prefix ((void *) "", "/bin")))
  72         #define SBINDIR         (br_thread_local_store (br_prepend_prefix ((void *) "", "/sbin")))
  73         #define LIBEXECDIR      (br_thread_local_store (br_prepend_prefix ((void *) "", "/libexec")))
  74         #define ETCDIR          (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
  75         #define SYSCONFDIR      (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
  76         #define CONFDIR         (br_thread_local_store (br_prepend_prefix ((void *) "", "/etc")))
  77         #define GEANY_PREFIX            (br_thread_local_store (br_locate_prefix ((void *) "")))
  78         #define GEANY_DATADIR           (br_thread_local_store (br_prepend_prefix ((void *) "", "/share")))
  79         #define GEANY_LIBDIR            (br_thread_local_store (br_prepend_prefix ((void *) "", "/lib")))
  80         #define GEANY_DOCDIR            (br_thread_local_store (br_prepend_prefix ((void *) "", "/share/doc/geany")))
  81         #define GEANY_LOCALEDIR         (br_thread_local_store (br_prepend_prefix ((void *) "", "/share/locale")))
  82 #endif /* BR_NO_MACROS */
  83
  84
  85 /* The following functions are used internally by BinReloc
  86    and shouldn't be used directly in applications. */
  87
  88 const char *br_thread_local_store (char *str);
  89 char *br_locate         (void *symbol);
  90 char *br_locate_prefix  (void *symbol);
  91 char *br_prepend_prefix (void *symbol, char *path);
  92
  93
  94 #endif /* ENABLE_BINRELOC */
  95
  96 #endif /* _PREFIX_H_ */