[Python-Dev] Snake farm (original) (raw)

Marc Recht marc@informatik.uni-bremen.de
11 Nov 2002 11:25:20 +0100

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So how do I request extensions on that system, beyond the functions defined in XPG/5 or XPG/6? The used standard is defined by_POSIX_SOURCE, _POSIX_C_SOURCE, _ANSI_SOURCE and _C99_SOURCE. In that order (sys/cdefs.h). These set the internal defines __POSIX_VISIBLE, __XSI_VISIBLE, __BSD_VISIBLE, __ISO_C_VISIBLE according to the given standard. If nothing is given=20 then #define __POSIX_VISIBLE 200112 #define __XSI_VISIBLE 600 #define __BSD_VISIBLE 1 #define __ISO_C_VISIBLE 1999 is set. In this environment is everything we want.

I have looked at them before, hence my claim that I think FreeBSD has There have been a lot of changes between September and late October. a bug here. I'm still not convinced that FreeBSD's behaviour is a bug. IMO it's only strict. If you define a standard you get, if not you get all.

Although I'm quite sure the FreeBSD community doesn't like it I'll make a patch against sys/defs.h to put a define _BSD_SOURCE at the top of the chain which sets the default environment and post it to the freebsd-current discussion list.

Still, you add a case with "FreeBSD", and "rest of the world", the I'm quite sure it's an object to be extended.. There are some strange systems out there which all need special treatment..

"rest of the world" case being where GNUSOURCE, XOPENSOURCE, XOPENSOURCEEXTENDED, and POSIXCSOURCE is defined. Why does it hurt if either GNUSOURCE or XOPENSOURCEEXTENDED would be defined on FreeBSD? They both don't hurt. I only moved them into the "*" case, because they're not needed for the FreeBSD case.=20

Only if all other options have been exhausted. What problems occur if XOPENSOURCE is defined? _XOPEN_SOURCE sets _POSIX_C_SOURCE.

Did you try defining GNUSOURCE and XOPENSOURCEEXTENDED? I can see It's no problem to define them. They're just not needed.

that you don't want POSIXCSOURCE to be defined, either. If it's set then we don't get __BSD_VISIBLE.=20

Regards, Marc --=20 "Premature optimization is the root of all evil." -- Donald E. Knuth

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