On Tue, Dec 02, 2008 at 07:30:02AM -0800, Hani Ayoub wrote:
> >>>> tst.h
> >>>> =======
> >>>> typedef struct _tst{
> >>> ...
> >>>> } tst;
> >>>
> >>>> tst2.h
> >>>> =======
> >>>> #include "tst.h"
> >>>>
> >>>> int foo(tst t);
> >>>
> >>>> tst.c
> >>>> =======
> >>>> #include <stdio.h>
> >>>> #include "tst2.h"
> >>>>
> >>>> int foo(tst t){ return 1; };
...
> What I'm trying to do is "forward declaration"; means to hide tst struct
> definition from source or header files that includes tst2.h file.
Then you'll want to remove #include "tst.h" from tst2.h -- struct _tst
is exactly what you want to hide from tst2.h and tst.c -- and make
typedef struct _tst tst available somewhere.
I personally would put typedef struct _tst tst in tst.h and hide struct
_tst declaration within something like #ifdef INTERNAL_TST ... #endif:
tst.h
=====
#ifdef INTERNAL_TST
struct _tst {
...
};
#endif
typedef struct _tst tst;
user.h
======
#include "tst.h"
int foo(tst t);
user.c
======
#include "user.h"
int foo(tst t){ return 1; }
This would provide the same header for both API-providing and API-using
modules.
With kind regards,
--
Baurzhan Ismagulov
http://www.kz-easy.com/
