FreeBSD compiles to what POSIX or XPG?

Lowell Gilbert freebsd-questions-local at
Mon Feb 13 06:54:26 PST 2006

Göran Nilsson <goran.nilsson at> writes:

> I have tried google, and tried bsdfourms. Now I'll put my hope to
> this list instead.
> Does FreeBSD compiles to the POSIX or X/Open Portability Guide
> XPG/1, /2, /3, /4 standards?  I have found out that
> Aix,HP-UX,Solaris are three of them that compiles to this standard.
> So all systems that goes under "Unix" follow these standars.
> I would be very interestead of a link to a document saying weither
> or not FreeBSD compiles to any of the above mentioned standards.

The FreeBSD "standards" group tries to keep FreeBSD in compliance, but
nobody is about to pay the large fees needed to *certify* compliance.

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