From owner-freebsd-ports@freebsd.org Fri Nov 6 22:39:28 2015 Return-Path: Delivered-To: freebsd-ports@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 93713A28E0B for ; Fri, 6 Nov 2015 22:39:28 +0000 (UTC) (envelope-from scratch65535@att.net) Received: from nm10-vm6.access.bullet.mail.gq1.yahoo.com (nm10-vm6.access.bullet.mail.gq1.yahoo.com [216.39.63.158]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 6722E1C5A for ; Fri, 6 Nov 2015 22:39:28 +0000 (UTC) (envelope-from scratch65535@att.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1446849380; bh=EfaMcPj8519Na+XRM+GsPSsrmUEnVhdM/xKdGOcZ+Xo=; h=From:To:Subject:Date:References:In-Reply-To:From:Subject; b=ik/BopVPPtuETXCwWycvX0Z+c8J13vGMaVfxImiUEXriEgPUlHqpOJzRQYhpYAUH/0g5Aw9EKDShvfERP1dsq4KVwZUE+sAyqdlI/rBn1oWjuAzyFm+RLEF5DGq79x11sbRXnX9/0avFH9ZimoXK5M5ZLuix8M0pyy6qoLvQn8I= Received: from [216.39.60.170] by nm10.access.bullet.mail.gq1.yahoo.com with NNFMP; 06 Nov 2015 22:36:20 -0000 Received: from [67.195.23.144] by tm6.access.bullet.mail.gq1.yahoo.com with NNFMP; 06 Nov 2015 22:36:20 -0000 Received: from [127.0.0.1] by smtp116.sbc.mail.gq1.yahoo.com with NNFMP; 06 Nov 2015 22:36:20 -0000 X-Yahoo-Newman-Id: 765595.43101.bm@smtp116.sbc.mail.gq1.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: 6HK6FAcVM1nenwJzf7ZeDzxFXPXJQRWbf1ed7aosxiY_4qQ suU1dRg031f6fh_0Y5Nl.etNv9fbCSULtmI4jKktNx2Fxt08fa7aWwmZ2_yP nuavVNJGzlUwbhesraFyAojXJt2RCH.pOFx_FVavaFCAGQhuLhUHRsThkvQk pgRxkLfhTbCnC73AQJe2WTk2ziY073uyoCFnkqF1p6jWmE7HZZW7yNNlODVL lk_dW6ViIScWi9cEi.bec1Re8vjRgmCoXm67bO5b7lMe99gVsl16HrIYndte LqsOrSAoXcXUDQj6aJHnziSiDdklkZkej8fsuitWSrYoGgmTlINykFqOsb4F OrVdHMBqBzF6nJh7Ccl_kiYH7jCUqwsSDlX2mrdegZhSosacSr95RO18Fh08 FdKaQT6TEYzzvqb9pX_D2uUdn92O.Ws22OwsDbTdReUEXqhmSD_0aMXmvcoA KZ1BQt3ZyKjZar0Ix5uTjWEkYcUksav6nag696HHbfOiLsvWTnRCFZGHx_qt YuqeDYcWlDrww10OIJru_aKpff7P1WAQ6fn_o4n69qQ-- X-Yahoo-SMTP: pPvqnOaswBBbYZLVYFzvU7GaowLcbNioPp.aF8KvOjZk From: M. MacDonald To: freebsd-ports Subject: Re: ports/pkg incompatibility, os/libc api changes Date: Fri, 06 Nov 2015 17:36:20 -0500 Message-ID: References: <563C7423.70705@demig.de> <20151106153202.GN2257@kib.kiev.ua> In-Reply-To: <20151106153202.GN2257@kib.kiev.ua> X-Mailer: Forte Agent 4.2/32.1118 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-ports@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Porting software to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Nov 2015 22:39:28 -0000 On Fri, 6 Nov 2015 17:32:02 +0200, Konstantin Belousov wrote: >There is no formal statement about the guarantees the project provides, >but the essence is that the compatibility is backward (and not forward, >as you found). In other words, we guarantee that a binary compiled and >worked on the previous version of the system, works on the newer version, >but not in reverse. "Backwardly compatible" generally means that, although designed and built for the new one, it will still run on the old one (i.e., it's compatible in a backward direction). Something built on and for the old one that still runs on the new one is often called "investment-preserving".