From patchwork Mon May 27 07:24:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13674675 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 53908C25B74 for ; Mon, 27 May 2024 07:25:58 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBUj6-0007ol-Jl; Mon, 27 May 2024 03:25:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBUj4-0007nZ-4G; Mon, 27 May 2024 03:24:58 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBUj2-0006Eh-CG; Mon, 27 May 2024 03:24:57 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 890CA6A4C7; Mon, 27 May 2024 10:25:09 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id C7E05D8464; Mon, 27 May 2024 10:24:35 +0300 (MSK) Received: (nullmailer pid 52900 invoked by uid 1000); Mon, 27 May 2024 07:24:35 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Thomas Huth , =?utf-8?q?Philip?= =?utf-8?q?pe_Mathieu-Daud=C3=A9?= , Michael Tokarev Subject: [Stable-8.2.5 10/21] configure: Fix error message when C compiler is not working Date: Mon, 27 May 2024 10:24:20 +0300 Message-Id: <20240527072435.52812-10-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Thomas Huth If you try to run the configure script on a system without a working C compiler, you get a very misleading error message: ERROR: Unrecognized host OS (uname -s reports 'Linux') Some people already opened bug tickets because of this problem: https://gitlab.com/qemu-project/qemu/-/issues/2057 https://gitlab.com/qemu-project/qemu/-/issues/2288 We should rather tell the user that we were not able to use the C compiler instead, otherwise they will have a hard time to figure out what was going wrong. While we're at it, let's also suppress the "unrecognized host CPU" message in this case since it is rather misleading than helpful. Fixes: 264b803721 ("configure: remove compiler sanity check") Message-ID: <20240513114010.51608-1-thuth@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Thomas Huth (cherry picked from commit 371d60dfdb47dd18d163a7759968ba138089371e) Signed-off-by: Michael Tokarev diff --git a/configure b/configure index 66ca736621..c1e03801f1 100755 --- a/configure +++ b/configure @@ -411,7 +411,9 @@ else # Using uname is really broken, but it is just a fallback for architectures # that are going to use TCI anyway cpu=$(uname -m) - echo "WARNING: unrecognized host CPU, proceeding with 'uname -m' output '$cpu'" + if test "$host_os" != "bogus"; then + echo "WARNING: unrecognized host CPU, proceeding with 'uname -m' output '$cpu'" + fi fi # Normalise host CPU name to the values used by Meson cross files and in source @@ -893,6 +895,13 @@ EOF exit 0 fi +# Now that we are sure that the user did not only want to print the --help +# information, we should double-check that the C compiler really works: +write_c_skeleton +if ! compile_object ; then + error_exit "C compiler \"$cc\" either does not exist or does not work." +fi + # Remove old dependency files to make sure that they get properly regenerated rm -f ./*/config-devices.mak.d