Date: Thu, 26 Jan 2012 09:00:21 -0500 From: David Schultz <das@freebsd.org> To: David Chisnall <theraven@freebsd.org> Cc: freebsd-standards@freebsd.org, python@freebsd.org, Andriy Gapon <avg@freebsd.org>, gogo@cs.uni-sb.de Subject: Re: pyconfig.h and freebsd10: _POSIX_C_SOURCE and _XOPEN_SOURCE Message-ID: <20120126140021.GA18060@zim.MIT.EDU> In-Reply-To: <3B3BEEED-D1E4-4329-BE34-5CFF5CABB52C@freebsd.org> References: <4F1AAA75.5050500@FreeBSD.org> <20120122192526.GA52071@zim.MIT.EDU> <9F9CC3ED-0686-4BC5-BF01-1839A30ABA9C@FreeBSD.ORG> <4F206B5D.3080302@FreeBSD.org> <CAF6rxgn81hxBwwx9Y6%2Bg1PFcaQjoLfQMfb5QGgycryR4PLoboA@mail.gmail.com> <3B3BEEED-D1E4-4329-BE34-5CFF5CABB52C@freebsd.org>
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On Thu, Jan 26, 2012, David Chisnall wrote: > > On 26 Jan 2012, at 04:47, Eitan Adler wrote: > > What about patching python to only define the POSIX macros iff glibc > > is being used (and getting this upstreamed) ? That's a good strategy regardless. As long as python is doing something bogus, it could easily break in the future. > Index: include/xlocale.h [...] > +/* > + * If people turned off POSIX2008 stuff, but still explicitly included the > + * xlocale.h header, then assume that they actually do want these functions and > + * define them. > + */ > +#ifndef __X_LOCALE_DEFINED > +#define __X_LOCALE_DEFINED > > +#define LC_COLLATE_MASK (1<<0) > +#define LC_CTYPE_MASK (1<<1) > +#define LC_MESSAGES_MASK (1<<2) > +#define LC_MONETARY_MASK (1<<3) > +#define LC_NUMERIC_MASK (1<<4) > +#define LC_TIME_MASK (1<<5) > +#define LC_ALL_MASK (LC_COLLATE_MASK | LC_CTYPE_MASK | LC_MESSAGES_MASK | \ > + LC_MONETARY_MASK | LC_NUMERIC_MASK | LC_TIME_MASK) > +#define LC_GLOBAL_LOCALE ((locale_t)-1) > + > +typedef struct _xlocale *locale_t; > +locale_t newlocale(int mask, const char *locale, locale_t base); > +locale_t duplocale(locale_t base); > +int freelocale(locale_t loc); > +const char *querylocale(int mask, locale_t loc); > +locale_t uselocale(locale_t loc); > + > +#endif /* __X_LOCALE_DEFINED */ It would be preferable not to have two copies of all the definitions and declarations in the source. This is often handled with separate headers like sys/_timeval.h and sys/_types.h. Perhaps that's too many hoops to jump through just to cope with buggy applications. (Incidentally, I noticed that the LC_* macros are in a slightly different order from the LC_*_MASK macros. For that reason, and only that reason, it's not possible to define the latter in terms of the former.) Would it suffice, perhaps, to simply change the xlocale declarations to use type `struct _xlocale' instead of locale_t? That won't fix apps that expect the LC_*_MASK macros to be defined, but it looks like it will at least make the header compile in a strict POSIX environment, and it avoids the duplication. By the way, struct _xlocale needs another underscore in front of it. Names prefixed with a single underscore and a lowercase letter are in the application's namespace.
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