Sto provando a portare un programma C compilato con GNU toolchain su OS X ma il suo programma predefinito ld
non supporta il flag --wrap
, che è presente in GNU ld
. Questo è dalla pagina man di GNU di ld
:Qual è l'equivalente del flag --wrap linker di GNU in OS X linker?
--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".
Esiste un modo portatile di raggiungere questo?
Vuoi dire '' non ld64' clang'. – Thomas
Grazie, ho aggiornato il titolo –