hook_macro.h

#ifndef _HOOK_MACRO_H
#define _HOOK_MACRO_H

#define DECL_FN_PTR(RETTYPE, CONVENTION, FN_NAME, ...) \
  typedef RETTYPE (CONVENTION *FN_NAME##_ptr)(__VA_ARGS__)
#define FAKE(RETTYPE, CONVENTION, FN_NAME, ...) \
DECL_FN_PTR(RETTYPE, CONVENTION, FN_NAME, __VA_ARGS__); \
FN_NAME##_ptr FN_NAME##_real; \
RETTYPE CONVENTION FN_NAME##_fake(__VA_ARGS__)

#endif