Was entspricht GNUs --wrap Linker Flag in OS X Linker?

Question

Ich versuche, ein C-Programm mit GNU Toolchain kompiliert zu OS X zu portieren, aber sein Standard ld Programm unterstützt nicht das --wrap Flag, das in GNU ld vorhanden ist. Dies ist von der man-Seite von GNU ld:

--wrap symbol 
    Use a wrapper function for symbol. Any undefined reference to sym- 
    bol will be resolved to "__wrap_symbol". Any undefined reference 
    to "__real_symbol" will be resolved to symbol. 

    This can be used to provide a wrapper for a system function. The 
    wrapper function should be called "__wrap_symbol". If it wishes to 
    call the system function, it should call "__real_symbol". 

    Here is a trivial example: 

      void * 
      __wrap_malloc (size_t c) 
      { 
       printf ("malloc called with %zu\n", c); 
       return __real_malloc (c); 
      } 

    If you link other code with this file using --wrap malloc, then all 
    calls to "malloc" will call the function "__wrap_malloc" instead. 
    The call to "__real_malloc" in "__wrap_malloc" will call the real 
    "malloc" function. 

    You may wish to provide a "__real_malloc" function as well, so that 
    links without the --wrap option will succeed. If you do this, you 
    should not put the definition of "__real_malloc" in the same file 
    as "__wrap_malloc"; if you do, the assembler may resolve the call 
    before the linker has a chance to wrap it to "malloc". 

Gibt es eine tragbare Art und Weise, dies zu erreichen?

Answer 1

Ich konfrontiert ein ähnliches Problem, aber fand nie ein Äquivalent. Die folgenden Problemumgehungen können helfen, je nachdem, was genau Sie erreichen möchten.

1) Wrapping symbols during linking on OS X

2) https://discussions.apple.com/thread/617779?start=0&tstart=0