include/wvlinkerhack.h

   1 #ifndef __WVLINKERHACK_H
   2 #define __WVLINKERHACK_H
   3
   4 /*
   5  * Don't call this directly.  It's used by WV_LINK_TO().
   6  */
   7 extern int **__wv_link_func(int **to);
   8
   9 /**
  10  * Create a target that WV_LINK_TO can point at when it wants to make sure
  11  * your object file is linked into the final binary.
  12  *
  13  * Do not put the name in quotes.
  14  *
  15  * Example (in uniinigen.cc): WV_LINK(UniIniGen);
  16  */
  17 #define WV_LINK(name) volatile int __wv_link_##name
  18
  19 /**
  20  * Link to a target created by WV_LINK, ensuring that the file which created
  21  * the WV_LINK is included in your final binary.  This is useful for ensuring
  22  * particular monikers will always be available when you link statically,
  23  * even though you don't refer to any particular classes implementing that
  24  * moniker directly.
  25  *
  26  * Do not put the name in quotes.
  27  *
  28  * Example (somewhere other than uniinigen.cc): WV_LINK_TO(UniIniGen);
  29  */
  30 #define WV_LINK_TO(name) \
  31         extern volatile int __wv_link_##name; \
  32         namespace { volatile int __wv_local_a_##name = __wv_link_##name; }
  33
  34 #endif // __WVLINKERHACK_H