Date: Sat, 10 Oct 2009 19:11:50 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: "Simon L. Nielsen" <simon@FreeBSD.org> Cc: freebsd-hackers@freebsd.org, stef@memberwebs.com Subject: Re: Is the FreeBSD ABI compatibility policy documented anywhere Message-ID: <86d44vp415.fsf@ds4.des.no> In-Reply-To: <20091010142758.GB1225@arthur.nitro.dk> (Simon L. Nielsen's message of "Sat, 10 Oct 2009 16:27:58 %2B0200") References: <4ABBD5FA.5070507@memberwebs.com> <20091010142758.GB1225@arthur.nitro.dk>
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"Simon L. Nielsen" <simon@FreeBSD.org> writes: > It's not entirely that simple. The ABI on a stable branch like 7.x > should be backward compatible, but there isn't a guarantee of forward > compatibility. IE, 7.0 binary should be able to run on 7.x, but a 7.2 > binary might not run on 7.0. It should be more or less the same with > the API's. > > PS. do note that there is no 100% guarantee. Correct, but we're getting closer to that now that we have symbol versioning - although we won't reach 100% until we have versioned symbols in *all* libraries, which is currently not the case. Even then, a developer might break the ABI by mistake, but hopefully we'd catch that before it made it into a release. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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