FW: tzcode standard C patch

[Olson, Arthur David (NCI)]

Torsten is not on the time zone mailing list; direct replies appropriately.

				--ado

> -----Original Message-----
> From:	Torsten Duwe [SMTP:duwe at caldera.de]
> Sent:	Tuesday, July 25, 2000 8:35 AM
> To:	tz at elsie.nci.nih.gov
> Cc:	duwe at caldera.de
> Subject:	tzcode standard C patch
> 
> Dear Mr. Olson (hope "tz" is a synonym, not a list :-) ,
> 
>      attached you find the patch we at Caldera are using for quite a while
> now to compile the tzcode under Linux, namely with the GNU C library,
> version
> 2 and up. I strongly believe the old code compiles on other, "tradidional"
> Unix-like systems (if it does so at all without changes) because of their
> excessive backward compatibility, that the GNU C library intentionally has
> not. My manuals (GNU C library and NetBSD C Library) state that
> strerror/perror/<errno.h> comply to
> 
> ANSI X3.159-1989 (``ANSI C'')
> BSD 4.3, POSIX, X/OPEN .
> 
> I have carefully made the changes only to the "#ifdef unix" case, but I
> think
> it is applicable in general.
> 
> Thank you for your attention,
> 
>       Torsten Duwe
> 
> --- zic.c~	Thu May 28 15:56:07 1998
> +++ zic.c	Mon Oct 12 17:04:02 1998
> @@ -9,6 +9,7 @@
>  #include "tzfile.h"
>  #ifdef unix
>  #include "sys/stat.h"			/* for umask manifest
> constants */
> +#include <errno.h>
>  #endif /* defined unix */
>  
>  /*
> @@ -377,7 +378,9 @@
>  strerror(errnum)
>  int	errnum;
>  {
> +#ifndef unix
>  	extern char *	sys_errlist[];
> +#endif
>  	extern int	sys_nerr;
>  
>  	return (errnum > 0 && errnum <= sys_nerr) ?