From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 5B5DC13877A for ; Sat, 14 Jun 2014 16:52:11 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id C9D1FE0B27; Sat, 14 Jun 2014 16:52:05 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id E28D0E0AF7 for ; Sat, 14 Jun 2014 16:52:04 +0000 (UTC) Received: from rook (unknown [96.241.16.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tetromino) by smtp.gentoo.org (Postfix) with ESMTPSA id D0F8A33F81E for ; Sat, 14 Jun 2014 16:52:03 +0000 (UTC) Message-ID: <1402764656.16949.7.camel@rook> Subject: Re: [gentoo-dev] Subslots: should they be bumped like SONAME or on any ABI changes? From: Alexandre Rostovtsev To: gentoo-dev@lists.gentoo.org Date: Sat, 14 Jun 2014 12:50:56 -0400 In-Reply-To: <20140614164151.45afb5ca@pomiot.lan> References: <20140614164151.45afb5ca@pomiot.lan> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-zWWs/K00OWora+R1QOPs" X-Mailer: Evolution 3.12.3 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@lists.gentoo.org Reply-to: gentoo-dev@lists.gentoo.org Mime-Version: 1.0 X-Archives-Salt: 6bc05bb6-1e96-44fb-a58b-8eeada8bffa5 X-Archives-Hash: 116f490a70dbe26f904e1f250b7ab6df --=-zWWs/K00OWora+R1QOPs Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Sat, 2014-06-14 at 16:41 +0200, Micha=C5=82 G=C3=B3rny wrote: > Considering the libtool versioning, there are two kinds of library > bumps relevant to us: >=20 > 1) when ABI is altered in backwards-compatible way (so old stuff is not > touched), >=20 > 2) when ABI is altered in backwards-incompatible way. The situation is more nuanced. I have also seen the following cases: 3) a package provides multiple libraries or entry points, and only some of them have their ABI altered in a backwards-incompatible way. Examples: xorg-server changes ABI for video drivers, but not for input drivers; poppler changes ABI for libpoppler, but not libpoppler-glib. 4) a package alters a "private" ABI which matters for a small number of closely-tied packages, but is transparent to normal users of the library. Example: glib and gobject-introspection. A solution to unnecessary rebuilds in these situations, as well as for case (1), might be in the form of subslots as a key:value list, with different users subscribing to be rebuilt for specific keys. --=-zWWs/K00OWora+R1QOPs Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABAgAGBQJTnH1wAAoJEKRDAQ9PHUhgZMkP/08EyYhO6DnsPMXdGpOCglCA 45HchQKHWbWJj8Di8PgZrbsmxUyi9Bg3xBLuHtaA07JuGwhqRRwRL+jjzdbLXJjw Vc/4a/c/fzG+C0IkU5nHK6V3o9UCpvv9qZGG0s45EymeeGO/D5T7ZhIVhVwit+gE yAZefqa85vzILdVLDHG96PA2sqzfuudXmGgrJlD8p+POPv2bGbdDyCDWS9tak475 nQe5+q0p3YqPgy8vE3TFEpB61BJ1Gf+kNOww/7S61HlDJIEXcmDQJJe0mRzt7ZiD 05GF+GH7Y7LGFF5mK6Jx0cUqYPmJUXcuz0IRXMfAQDoJm1RAeYzNDDz57c3bYPTX V6XZx2AzAOWkFITp3OWvxFq0TNdSo4t2VVewVk2lZMK7MMjsCIW8sFo/+YZBYhyo IWNjUnuhm1rYmq3ecEbch/nw0wjb6L6JvG0y+2Cf7NiUoSyDjL3oBkBrTMhbmNIN 5eTaffu1gpmG31moaPwFSOa/SBc7bz5GoOkcZ/Iu87579IuaTHsHuSax7/hb8b9K aeaUu2ka9UQe7dleAOcZ5RSxq0lZajLVocXLUuRgt1bAalDDwvDsxsXpiN0hZaA6 7cS6dlhdpkb7S4q1/7RwQ/O9iGSbRFyTGmINeqr+FIvZwYED21IuqEuUAJx2cb94 R7guTH4W9uwOk31kWP3i =0gxX -----END PGP SIGNATURE----- --=-zWWs/K00OWora+R1QOPs--