Date: Fri, 23 May 2014 18:45:21 +0200 From: Baptiste Daroussin <bapt@FreeBSD.org> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: svn-src-head@FreeBSD.org, Glen Barber <gjb@FreeBSD.org>, svn-src-all@FreeBSD.org, src-committers@FreeBSD.org Subject: Re: svn commit: r266553 - head/release/scripts Message-ID: <20140523164521.GH72340@ivaldir.etoilebsd.net> In-Reply-To: <537F7976.3060705@freebsd.org> References: <201405221922.s4MJM4Y9025265@svn.freebsd.org> <537F6706.6070509@freebsd.org> <20140523153619.GF72340@ivaldir.etoilebsd.net> <537F6EBC.3080008@freebsd.org> <20140523162020.GG72340@ivaldir.etoilebsd.net> <537F7976.3060705@freebsd.org>
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--bygAmIonOAIqBxQB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 23, 2014 at 09:38:14AM -0700, Nathan Whitehorn wrote: > On 05/23/14 09:20, Baptiste Daroussin wrote: > > On Fri, May 23, 2014 at 08:52:28AM -0700, Nathan Whitehorn wrote: > >> On 05/23/14 08:36, Baptiste Daroussin wrote: > >>> On Fri, May 23, 2014 at 08:19:34AM -0700, Nathan Whitehorn wrote: > >>>> Is there any chance of finally switching the pkg abi identifiers to = just > >>>> be uname -p? > >>>> -Nathan > >>> Keeping asking won't make it happen, I have explained a large number = of time why it > >>> happened, why it is not easy for compatibility and why uname -p is st= ill not > >>> representing the ABI we do support, and what flexibility we need that= the > >>> current string offers to us. > >>> > >>> if one is willing to do the work, please be my guess, just dig into t= he archives > >>> and join the pkg development otherwise: no it won't happen before a w= hile > >>> because we have way too much work on the todo and this item is stored= at the > >>> very end of this todo. > >>> > >>> regards, > >>> Bapt > >> I'm happy to do the work, and have volunteered now many times. If uname > >> -p does not describe the ABI fully, then uname -p needs changes on the > >> relevant platforms. Which are they? What extra flexibility does the > >> string give you if uname -p describes the ABI completely? > >> -Nathan > > just simple examples in armv6: > > - eabi vs oabi >=20 > OABI is almost entirely dead, and will be entirely dead soon. Maybe but still for now it is there and pkg has to work now >=20 > > - The different float abi (even if only one is supported for now others= are > > being worked on) >=20 > armv6 and armv6hf >=20 > > - little endian vs big endian >=20 > armv6 and armv6eb (though I think armv6eb support in general has been=20 > removed from the tree, but armeb is still there) what about combinaison? armv6 + eb + hf? >=20 > These all already exist. >=20 > > the extras flexibilit is being able to say this binary do support freeb= sd i386 > > and amd64 in one key, freebsd:9:x86:*, or or all arches freebsd:10:* > > arm was en example what about mips? >=20 > The second one already would work, wouldn't it? Just replacing x86:64=20 > with amd64 won't change anything. The first has to be outweighed by=20 > being able to reliably figure out where to fetch from without a lookup=20 > table. >=20 > We also added the kern.supported_archs sysctl last year to all branches= =20 > to enable figuring out which architectures a given running kernel=20 > supports (e.g. amd64 and i386 on most amd64 systems). This was designed= =20 > specifically to help pkg figure out what packages it can install. I know, it means that we can switch only when freebsd 8 and 9 are EOL which= means in a couple of years And it defeats cross installation (which is the reason why the ABI supporte= d is read from a binary and not from kernel) and last thing is the current build packages should just work meaning that = we would need to have a kind of mapping table --bygAmIonOAIqBxQB Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (FreeBSD) iEYEARECAAYFAlN/eyEACgkQ8kTtMUmk6Ez5RQCguLMPi4avjhTXGN2uyGfdzO43 OU0AnRWITWirZWTBSWImGXlZeHu3klxi =+FLK -----END PGP SIGNATURE----- --bygAmIonOAIqBxQB--
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