Estoy tratando de portar un programa C compilado con la cadena de herramientas GNU a OS X, pero su programa ld predeterminado no es compatible con el indicador --wrap , que está presente en el ld de GNU. Esto es de la página de manual de ld de GNU:

 --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".

¿Hay una forma portátil de lograr esto?