[9fans] plan9port, sun-os, cc, how to compile

[Bengt Kleberg <bengt.kleberg@ericsson.com>]

greetings,

this is about the plan9port plan9-20040517.tar.gz. i have sun-os 5.8,
and sun-cc.


first i had trouble with sun-os yield() vs plan9 yield(). sun-os and
plan9 man pages both agree on
void	yield(void)
but plan9/include/thread.h and plan9/src/libthread/sched.c uses
int 	yield(void)
it has proved impossible (so far) to hide the sun-os definition of
yield(). i decided to redefine plan9 yield().
*** /home/eleberg/private/plan9/include/thread.h	Mon May 24 14:07:45 2004
--- /home/eleberg/private/plan9/include/thread.h.original	Mon May 24
14:06:52 2004
***************
*** 121,130 ****
   int	tprivalloc(void);
   void	tprivfree(int);
   void	**tprivaddr(int);
! int	p9yield(void);
! #ifndef NOPLAN9DEFINES
! #define	yield	p9yield
! #endif
   long		threadstack(void);

   extern	int		mainstacksize;
--- 121,128 ----
   int	tprivalloc(void);
   void	tprivfree(int);
   void	**tprivaddr(int);
! int	yield(void);
!
   long		threadstack(void);

   extern	int		mainstacksize;



next problem was in plan9/src/libmach. there is no SunOS.c. i have
copied Darwin.c to SunOS.c, which allows the installation to continue.
i think i have written before about this to comp.os.plan9.


finally i had to add a comment to plan9/src/cmd/astro/comet.c.
*** /home/eleberg/private/plan9/src/cmd/astro/comet.c	Mon May 24
14:22:27 2004
--- /home/eleberg/private/plan9/src/cmd/astro/comet.c.original	Mon May
24 14:22:17 2004
***************
*** 73,79 ****
   		151.0510,
   		83.1909,
   	};	/*C/1999 S4 (Linear) */
! /*	elem=(struct elem)
   	{
   		etdate(2002, 3, 18.9784),
   		0.5070601,
--- 73,79 ----
   		151.0510,
   		83.1909,
   	};	/*C/1999 S4 (Linear) */
! 	elem=(struct elem)
   	{
   		etdate(2002, 3, 18.9784),
   		0.5070601,

doing this allows the installation to continue. it is obvious from the
code that the function now uses non initialised data, but the compiler
only complains about
./astro.h:203: warning: macro redefined: sun
:-)


bengt