Re: [q-lang-users] [qlist] Re: Good news, everyone!

[Andrew B. <and...@ya...>]

I'm currently running Mac OS X Version 10.4.8

Ok, from the man page:

--------------------------------
SETPGID(2)                  BSD System Calls Manual                  
SETPGID(2)

NAME
      setpgid, setpgrp -- set process group

SYNOPSIS
      #include <unistd.h>

      int
      setpgid(pid_t pid, pid_t pgrp);

      int
      setpgrp(pid_t pid, pid_t pgrp);

DESCRIPTION
      Setpgid() sets the process group of the specified process pid  
to the
      specified pgrp.  If pid is zero, then the call applies to the  
current
      process.
--------------------------------

...which would support your claims.  On the other hand, looking at  
'unistd.h', I find:

--------------------------------
     448 #if __DARWIN_UNIX03
     449 pid_t    setpgrp(void) __DARWIN_ALIAS(setpgrp);
     450 #else /* !__DARWIN_UNIX03 */
     451 int      setpgrp(pid_t pid, pid_t pgrp);        /* obsoleted  
by setpgid() */
     452 #endif /* __DARWIN_UNIX03 */
--------------------------------

...at which point I quit following.  It appears that __DARWIN_UNIX03  
is being set in 'sys/cdefs.h', but I wouldn't bet money on that.  The  
relavant lines:

--------------------------------
     211 /*
     212  * The __DARWIN_ALIAS macros is used to do symbol renaming,
     213  * they allow old code to use the old symbol thus maintiang  
binary
     214  * compatability while new code can use a new improved  
version of the
     215  * same function.
     216  *
     217  * By default newly complied code will actually get the same  
symbols
     218  * that the old code did.  Defining any of _APPLE_C_SOURCE,  
_XOPEN_SOURCE,
     219  * or _POSIX_C_SOURCE will give you the new symbols.   
Defining _XOPEN_SOURCE
     220  * or _POSIX_C_SOURCE also restricts the avilable symbols to  
a subset of
     221  * Apple's APIs.
     222  *
     223  * __DARWIN_ALIAS is used by itself if the function  
signature has not
     224  * changed, it is used along with a #ifdef check for  
__DARWIN_UNIX03
     225  * if the signature has changed.  Because the __LP64__  
enviroment
     226  * only supports UNIX03 sementics it causes __DARWIN_UNIX03  
to be
     227  * defined, but causes __DARWIN_ALIAS to do no symbol mangling.
     228  */
     229
     230 #if !defined(__DARWIN_UNIX03)
     231 #if defined(_APPLE_C_SOURCE) || defined(_XOPEN_SOURCE) ||  
defined(_POSIX_C_SOURCE) || defined(__LP64__)
     232 #if defined(_NONSTD_SOURCE)
     233 #error "Can't define both _NONSTD_SOURCE and any of  
_APPLE_C_SOURCE, _XOPEN_SOURCE, _POSIX_C_SOURCE, or __LP64__"
     234 #endif /* _NONSTD_SOURCE */
     235 #define __DARWIN_UNIX03 1
     236 #elif defined(_NONSTD_SOURCE)
     237 #define __DARWIN_UNIX03 0
     238 #else /* default */
     239 #define __DARWIN_UNIX03 0
     240 #endif /* _APPLE_C_SOURCE || _XOPEN_SOURCE ||  
_POSIX_C_SOURCE || __LP64__ */
     241 #endif /* !__DARWIN_UNIX03 */
     242
     243 #if __DARWIN_UNIX03 && !defined(__LP64__)
     244 #define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym)  
"$UNIX2003")
     245 #else
     246 #define __DARWIN_ALIAS(sym)
     247 #endif
--------------------------------

Anyhow, I have no idea if this helps at all.  If you remember my  
silly little post from about a month ago:  "Years ago, when I was  
young and idealistic I would worry about how stuff was "supposed" to  
work.  Now I just look
in the header files and try to figure out what _will_ work."

-andrew

On 16 Dec 2006, at 18:42, Albert Graef wrote:

> Andrew Berg wrote:
>> +#ifdef __APPLE__
>> +/* Need to undef _POSIX_C_SOURCE to get AF_LOCAL defined. */
>> +#undef _POSIX_C_SOURCE
>> +#endif
>
> Ok, this is in cvs now.
>
>> +/* This one actually does not get it wrong... */
>> +#if defined(__APPLE__)
>> +#define SETPGRP_VOID
>> +#endif
>
> Are you sure about this? Last time I checked, and according to the
> web-based documentation, setpgrp still expects two pid_t  
> parameters, see
> http://www.hmug.org/man/2/setpgrp.php. That would imply that #undef
> SETPGRP_VOID is the right setting. Could you please verify that  
> with the
> setpgrp man page on your system? And, btw, which OSX version do you  
> have
> (Jaguar? Tiger?)?
>
> Thanks,
> Albert
>
> -- 
> Dr. Albert Gr"af
> Dept. of Music-Informatics, University of Mainz, Germany
> Email:  Dr....@t-..., ag...@mu...
> WWW:    http://www.musikinformatik.uni-mainz.de/ag
>
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