From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAEF7C433DB for ; Fri, 19 Feb 2021 16:27:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5212264D74 for ; Fri, 19 Feb 2021 16:27:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5212264D74 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53720 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lD8dF-0001Le-9P for qemu-devel@archiver.kernel.org; Fri, 19 Feb 2021 11:27:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:55598) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lD8Q1-00064y-Lp for qemu-devel@nongnu.org; Fri, 19 Feb 2021 11:14:13 -0500 Received: from mail-ed1-x531.google.com ([2a00:1450:4864:20::531]:38078) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lD8Py-0006Q9-0y for qemu-devel@nongnu.org; Fri, 19 Feb 2021 11:14:12 -0500 Received: by mail-ed1-x531.google.com with SMTP id s11so10866168edd.5 for ; Fri, 19 Feb 2021 08:14:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=CBL796UhhdITlTku0CzZZwQl6nZdf9RA8FYrdWG9d2s=; b=x6y2sdd2sKOdSo5PNsZ5h1suIX5RgZsTAibylaAN1qEZu000EmPxDaWrNJQrZIKB8h GB2BR5OojoiNdWwUWVUbB7dmk14nmv5BGiggEBgc9I8Hgz1ugRnRy2Mq7OXHXlmrjLaw +5MilxkfrEa5+ZOqJL6DcvsVJV3u9DDWKNaY4Zb1mtqKYdarSX33zsv0LzmAfi2boQnL xo0RaItcaiCoI8Jjgp/gkoCZ/3vV6QF7Tn+FhXzFcA+PjaTG48dgL4x0S8ubzhOtcYHq vt/+vvhymnGaJxTuObWEHzMVhsNOThEo8pWdjycZTa58c9vQx4QlY+EAru6uHnPa7Q+Q ZdJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=CBL796UhhdITlTku0CzZZwQl6nZdf9RA8FYrdWG9d2s=; b=B1U2Q9M0yxYC2bzI8lTN9T6MGgXpCXTiPUvDoZ2lfFjlHfIl3bcGbMh3p2VXi/8vsA Jwjen00Goif5wMpvLiQeW4j3D+HPrBhmNnA6pGHn0jUe7PrT5bpN6Y/jmylohAM1YFe+ RjCrGaFMC7MCaw/CO3tl6HujVxHkude++tK+213wo4eVqF/DKr1QcgGulqArHjX/c9ko CZhzI6wVqy4DYFMFbIAXRY8+128WBnMJeVVH3o/wwvSYH0Wcl/tTNgti8u+xbpRWa7bu 3gHQ4TUwRL4+4wbdeSCD8WeGfxpeqzsWzy/1upc9hl5UgfvvEBLc6Fm/7LIJFZ7qHmVU c7tw== X-Gm-Message-State: AOAM530IsOuklaGwr+lHgM7cyqJKW2rPv6nmbSiEAQ2g5UQq3iEkFApT +Z0ngaS0kBcj6/KsGzhjh1w1ypvzdrSusIwJWy81QQ== X-Google-Smtp-Source: ABdhPJxzQSKk7KuuVLtXuQJVm7A3iTCR7NBz+QbWUq3mLDH6e508QTIFzm9l/Y+ozfPoiT1x0wY+SzocA8h6ATZnL8s= X-Received: by 2002:a50:d307:: with SMTP id g7mr10005107edh.204.1613751248149; Fri, 19 Feb 2021 08:14:08 -0800 (PST) MIME-Version: 1.0 References: <8735xss5q3.fsf@linaro.org> <20210219152408.34ibwagyqzgye4yd@sirius.home.kraxel.org> In-Reply-To: From: Peter Maydell Date: Fri, 19 Feb 2021 16:13:56 +0000 Message-ID: Subject: Re: FreeBSD build regressions To: Warner Losh Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::531; envelope-from=peter.maydell@linaro.org; helo=mail-ed1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?B?QWxleCBCZW5uw6ll?= , Ed Maste , QEMU Developers , Gerd Hoffmann , Li-Wen Hsu Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, 19 Feb 2021 at 16:08, Warner Losh wrote: > FreeBSD builds packages on the oldest supported version in the stable bra= nch. Due to forward compatibility, that means all supported versions of Fre= eBSD 12.x will work. Recently, FreeBSD 12.1 became unsupported, so the buil= d machines clicked forward to 12.2. Since there's no 'forward compatibility= ' guarantees, this problem was hit. While you can run binaries compiled on = old versions of the software on new versions of the system, you can't neces= sarily do the inverse because new symbols are introduced (in this case clos= e_range). It makes perfect sense that you don't want to support older versions forever and that at some point newer packages aren't valid on old systems, but I don't understand why an older 12.1 system then says "but I'm going to go ahead and install these won't-work packages anyway" rather than "oh dear, I'm out of support, there are no newer packages available, I will install whatever the last archived version of the package for my OS version is" (or "I will install nothing"). I'm surprised this doesn't break a lot of real-world users... -- PMM