From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 332973858C53 for ; Fri, 21 Jul 2023 02:27:01 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 332973858C53 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689906420; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to; bh=wyjArED9BmTJte8cVXCXrsNhbfeXUqcc2VZBCEsVXsk=; b=KjxaKPqM/ekE7G6P7+claI6M9j+Y+GHpFoYMvcYZCpuNw29N5pP4Mu1ruim/FTiTLOatXl Ofgt+Y8i6RIBnPTTDm4+4ynOVNfRO1EVEIw6hHj87ijnTAYb30cRTIB6MD1Z8u0/bHBVkt BmS2TANDCrBn5GMJKXfn25JsWndnzVQ= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-544-9UcUY9DlO-e9d6UaBIXBtg-1; Thu, 20 Jul 2023 22:26:58 -0400 X-MC-Unique: 9UcUY9DlO-e9d6UaBIXBtg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8FA3988CC49; Fri, 21 Jul 2023 02:26:58 +0000 (UTC) Received: from greed.delorie.com (unknown [10.22.8.229]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7305CC5796A; Fri, 21 Jul 2023 02:26:58 +0000 (UTC) Received: from greed.delorie.com.redhat.com (localhost [127.0.0.1]) by greed.delorie.com (8.15.2/8.15.2) with ESMTP id 36L2Qvon656929; Thu, 20 Jul 2023 22:26:57 -0400 From: DJ Delorie To: "Andreas K. Huettel" Cc: libc-alpha@sourceware.org Subject: Re: aarch64, Neoverse N1 without SVE In-Reply-To: <19372791.geO5KgaWL5@pinacolada> (libc-alpha@sourceware.org) Date: Thu, 20 Jul 2023 22:26:57 -0400 Message-ID: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: "Andreas K. Huettel via Libc-alpha" writes: > Or is --disable-mathvec needed despite the scary message? That's what I did for testing an aarch64 build on RHEL8, which has an older toolchain. It's fine for development or local testing, as long as the glibc you build doesn't "escape" into the wild ;-) FYI Fedora rawhide has gcc 13.1.1 and binutils 2.40, so you're not *that* far behind version-wise. I tried x86 F37, which has gcc 12.3.1 and binutils 2.38 and configure didn't complain. Maybe the assembler you have is detecting the (or was built for the) specific machine you're on, which doesn't include SVE, and gave you a custom version without the option to enable it?