GCC with Xenix Include files

[Ronald S H Khoo]

In article <1990Oct16.081629.106 at bbt.se> pgd at bbt.se writes:

> The solution is to edit the include files (are you listening SCO?) in
> the style of:
>	#ifndef SIZE_T_DEFINED
>	typedef unsigned int size_t;
>	#define	SIZE_T_DEFINED
>	#endif

I prefer Chris Torek's solution which is much cleaner, because it means
that you only have to maintain the machine dependent typedefs in ONE file.
It goes something like this:  The vendor (in this case SCO and Microsoft,
I guess) creates a "system" include file for use by the other include files
which simply

	#define _TYPEDEF_SIZE_T	int

and so on for each of these multiply defined system types.  Then, in each
file which wants to typedef size_t

	#include <sys/whatever.h>

	...

	#ifdef  _TYPEDEF_SIZE_T
	typedef _TYPEDEF_SIZE_T size_t
	#undef  _TYPEDEF_SIZE_T
	#endif

I thought it was really neat when I saw it.  Now who's first to market? :-)

Steve's just suggested an even neater solution:  have a directory
/usr/include/typedef with files like size_t.h containing ONE of the
traditional

	#ifndef SIZE_T_DEFINED
	typedef unsigned int size_t;
	#define	SIZE_T_DEFINED
	#endif

per each.  And have thousands of #include <typedef/*.h> in your include
files.  Might slow compilations down a little, though :-)
I think, given UNIX, Chris's solution is probably more "practical" :-)
-- 
ronald at robobar.co.uk +44 81 991 1142 (O) +44 71 229 7741 (H)