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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E586C6FA82 for ; Mon, 12 Sep 2022 16:18:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229819AbiILQS4 (ORCPT ); Mon, 12 Sep 2022 12:18:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229560AbiILQSz (ORCPT ); Mon, 12 Sep 2022 12:18:55 -0400 Received: from mail-il1-x134.google.com (mail-il1-x134.google.com [IPv6:2607:f8b0:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4FA63868A; Mon, 12 Sep 2022 09:18:54 -0700 (PDT) Received: by mail-il1-x134.google.com with SMTP id m16so4805076ilg.3; Mon, 12 Sep 2022 09:18:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date; bh=dKtqFa8Lj7sKVbipP1evfO/jZ1JEKgMyQWZPo5L2svY=; b=LYJrUWkBI5r0+ftj5RafEIHZV3TKIYV+GtfpLp5bklqBn7NVcwrDDRIvV40oAViNnw PAYijJ1aNQ4wlDinX3lV3rhtEr6tMQHvjF4Qpem/VsESXWSpyHspJurr8+MBPgRUnyS1 JSyYvDet2ykXQxZD7W0xJQ/PbXRNVY8laRRXUVrXu8sLgFQQEl/CQnZve/OUnnSCjOC9 SWBwhTCcO23qhLn2kVpDFhkjIR4NmaqXoDjc0wRMDxkqLUhcCuzscCc2alA3Bl4rAfUt b5JxVOVq1YMz+KhSjV168EA76QkBJyrj/895rj3CdO4d8Ut7a/C9fvaelZoVGDGCEllR K/2Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date; bh=dKtqFa8Lj7sKVbipP1evfO/jZ1JEKgMyQWZPo5L2svY=; b=Z8HIHWjrHTTpQL4YWbVNpS5pVfa/1Ij5usrAUhmaIsTWwK6CUKPPFaJ5Pugg8zWZdS pn6PAv+rWCt3i03UJMvUAggMs4LiOoW0cG92h7RF3dCDbtm9hpIyKVCRoAWNXrRXwXeE tRytTY477Fd30MY+9SnHS/zDOZJEr5eymwiepSokmTYnwTuxWNFld6rtmghNcLbFsjC2 +50U+msnwdaigM/hA6edJvKvBPARXxK9YM7Ko+ZLKwzzKv5A+vG03AAD0tG6m48//uA4 aB4wbF9nk0xSyIlPdl45NcMaUkeW/6xR2NibHJ0UMFgYS2rjFo2ZzDcYmKXYIHI/drcG iD5Q== X-Gm-Message-State: ACgBeo2wlpfoxvcydeojEc8KT/jBxnMNc2q+rByxP4e5tiyoYeNeCZxQ qbuIcOjoR/kvZqT26Xh9PmkMk8auYidpUCr3qWw= X-Google-Smtp-Source: AA6agR6MemFAoJLParyi3ed9uKb3AZKl39DwttCreIuRBOy0bqj7TVF1woYsiMJbd8RxkweMyI0pKSKSOrXHyq4gx6o= X-Received: by 2002:a05:6e02:1aac:b0:2f1:94e3:1805 with SMTP id l12-20020a056e021aac00b002f194e31805mr10813730ilv.72.1662999534105; Mon, 12 Sep 2022 09:18:54 -0700 (PDT) MIME-Version: 1.0 References: <20220805154231.31257-1-ojeda@kernel.org> <20220805154231.31257-24-ojeda@kernel.org> In-Reply-To: From: Miguel Ojeda Date: Mon, 12 Sep 2022 17:18:43 +0100 Message-ID: Subject: Re: [PATCH v9 23/27] Kbuild: add Rust support To: Masahiro Yamada Cc: Miguel Ojeda , Linus Torvalds , Greg Kroah-Hartman , rust-for-linux@vger.kernel.org, Linux Kernel Mailing List , Linux FS-devel Mailing List , patches@lists.linux.dev, Jarkko Sakkinen , Alex Gaynor , Finn Behrens , Adam Bratschi-Kaye , Wedson Almeida Filho , Michael Ellerman , Sven Van Asbroeck , Gary Guo , Boris-Chengbiao Zhou , Boqun Feng , Douglas Su , Dariusz Sosnowski , Antonio Terceiro , Daniel Xu , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Martin Rodriguez Reboredo , Michal Marek , Nick Desaulniers , Linux Kbuild mailing list Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org Hi Masahiro, On Mon, Sep 12, 2022 at 5:08 PM Masahiro Yamada wrote: > > I have not figured out where this difference comes from. It is the `RUSTC_BOOTSTRAP` environment variable: it allows to use unstable featuers in the stable compiler. We currently set it in the global `Makefile`, but we could be more explicit and do it on each command if you think that would be better. If you want that we keep using the global export, then we can add a comment explaining this to clarify. Cheers, Miguel