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Fri, 12 Dec 2025 07:53:55 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 1AE63103C8E02; Fri, 12 Dec 2025 08:53:51 +0100 (CET) Date: Fri, 12 Dec 2025 08:53:50 +0100 To: Alexey Brodkin Message-ID: <20251212085350.307c46a3@windsurf> In-Reply-To: References: <20251205212959.2082018-1-thomas.petazzoni@bootlin.com> <87sedoazgb.fsf@dell.be.48ers.dk> <20251208172339.4a6d24a3@windsurf> Organization: Bootlin X-Mailer: Claws Mail 4.3.1 (GTK 3.24.43; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.3 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1765526035; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=2IdWZR21NbntTeP/QLhvQVk5oXmgugbYCCiFTxRh4f0=; b=nM1uF5FDFJQuIC9cS6hP81uY6w4p7qCnRHmK7LaMT04pqJ8jsE11+WtgPP5r6/Zc1zUd8O vm1tpZEzImvm1ftuJsYlGA5MKb4S09QMyWtHr/bajVm36q+Ff1Z7c3SIN06PeAJGgFBRPO jDrZo/i2NDBfkk8TXHSBq1QfavlmmBrl6iG1/wDc22R51lWngj+kcMG36BGS1dc33GBMWX 09EAqryJoVL0/EhN1/NeKK1iAt+lEwEhYROXVLdMe274DN46Lwvd8+I6dx7geujoCJDIwF EPxim2dWrDftz6jLNqLTgeGCNbIcra6bQMWWqxzqONFi/5bt446zHe93Pio7lQ== X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com X-Mailman-Original-Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=dkim header.b=nM1uF5FD Subject: Re: [Buildroot] [PATCH] package/glibc: only supports ARC little-endian since glibc 2.41 X-BeenThere: buildroot@buildroot.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Discussion and development of buildroot List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Thomas Petazzoni via buildroot Reply-To: Thomas Petazzoni Cc: ARC Maintainers , Romain Naour , Thomas Petazzoni via buildroot Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: buildroot-bounces@buildroot.org Sender: "buildroot" Hello Alexey, On Tue, 9 Dec 2025 14:06:16 +0000 Alexey Brodkin wrote: > Synopsys ARC person here ;) Good, thanks for your feedback! > I think indeed, we may remove all the big-endian support for ARC. > Reasons are since introduction of ARC HS4x processors we no longer support > big-endian in any new processor IP, and even for older IP which used to > support big-endian it was rarely used... so basically there's no good justification > to spend any cycles on big-endian support looking forward in this project. > I.e. BE support in uClibc could also be removed if it makes any difference. Based on your feedback, I've sent a patch to completely drop support for ARCeb: https://lore.kernel.org/buildroot/20251211161615.503688-1-thomas.petazzoni@bootlin.com/ > Well, I must confess that indeed quite some activities (including Buildroot > support for ARC) were deprioritized some time ago due to resource > reallocation to other areas which were not that polished as our open-source > components. But even though I don't think that situation will change in > comings weeks, support of ARC HS (both v2 & v3, AKA HS3x, 4x, 5x and 6x) > in Buildroot and other open source projects is very important for us as one > of the key enablers for ARC Processor IP, thus by all means I'd like to see > corresponding support in. > > Also, I have some ideas on how to apply some more love to ARC support > in Buildroot - let me explore that possibility as we do want to keep > at least existing ARC support in Buildroot and other open-source projects. Thanks for your feedback. However, we can't support ARC in Buildroot if there's not some minimal involvement from Synopsys to fix the architecture-specific issues. On August 21, 2024, I sent to you and Yuriy Kolerov an e-mail about ARC toolchain issues. On December 1, 2024, I sent another e-mail about ARC toolchain issues. On December 27, 2024, I pinged again about this issue, and adding some more. On August 29, 2025, I reported again some other issue with ARC toolchains. This last problem still exists: https://autobuild.buildroot.net/results/be8/be8a35c9b07116f7de611c4b5ab821d500a2b12d/build-end.log https://autobuild.buildroot.net/results/b76/b768be74b5a5bce84b0172091f3f8720279f1028/build-end.log The ARC-specific binutils version fails to build under some conditions: https://autobuild.buildroot.net/results/827/827708f47176368aac6439692c6e43ff6f2a0487/build-end.log I understand that you may not be able to go through all build issues affecting ARC, because many of them are not ARC-specific. Precisely because I understand that, I have pointed out to you the specific build issues that are ARC-specific, hoping that someone from Synopsys would have a look. So if by all means you would like to see the ARC support stay in Buildroot, then Synopsys needs to dedicate a little bit of engineering time to resolving the ARC-specific build issues. Do you think this would be possible? Thanks a lot for your support! Thomas -- Thomas Petazzoni, co-owner and CEO, Bootlin Embedded Linux and Kernel engineering and training https://bootlin.com _______________________________________________ buildroot mailing list buildroot@buildroot.org https://lists.buildroot.org/mailman/listinfo/buildroot