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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,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 4431DC46475 for ; Thu, 1 Apr 2021 17:45:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EAA1761393 for ; Thu, 1 Apr 2021 17:45:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234544AbhDARpj (ORCPT ); Thu, 1 Apr 2021 13:45:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234445AbhDARhi (ORCPT ); Thu, 1 Apr 2021 13:37:38 -0400 Received: from mail-yb1-xb2a.google.com (mail-yb1-xb2a.google.com [IPv6:2607:f8b0:4864:20::b2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2A47C00F7D5 for ; Thu, 1 Apr 2021 08:07:17 -0700 (PDT) Received: by mail-yb1-xb2a.google.com with SMTP id j2so2112327ybj.8 for ; Thu, 01 Apr 2021 08:07:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ruK19XrIj7h40md62TO+GornB5hoAeda7BOu6Nbq8ds=; b=jKVgLghRqYR1q6UHL2j2KTb/XprQws8NVBkCrpohXBjDBaiNUkQHlkMkvtbnaI95Ct Gtg0L0UstyU0FL0p8xWB2nwepDFSuKV4RORa8/7cqzfcMXGWsbNXl9Tf6TkDTK7vW5G4 fTfDx2R28PuAy5AtktThE3PmrhGvKsJAxyxELEWKHdMwjqha2Z9wPoKmRxrG8PmY2/1O pEsZoDIQieSSiW1egA+p1Hm41Lew1dqnk9T2+E1vdFE6TXXTm0cyz2y6U8RxKXJDBckl oVDBzDGF/vy3M3up9RAkAB4y0cunGJbeJdxd9Yw1gPA/94Cg9ew2t6UfSl1wJtN8ssdw LG6g== 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; bh=ruK19XrIj7h40md62TO+GornB5hoAeda7BOu6Nbq8ds=; b=KROmkRXEPKQ75W6mk2w3GHluDuuDAs+DmVnUmEODMqtzosmJ5mPIkuxbxL1ciqFb7D G7bPvZaedIXPZIfctFzDnHbdB8DLZol6SCNLzupsoMgwCcevNv08MK9fD/vVqhahGnp4 9VvPsLJNErNXThMeTVcuhHL3oIZk7ZuIiAnSbLVtHyzDWDc37Rojr82qMQyt2EZKPl+H SXD+Y1mL26S+B57GEp790QtkL81cOEvJ630mFTG/bb5Blzt+tIzJedKKMhT0D4d8dLxo l4SNJHNXYbZOwdEnHl+IJrYeD5x+y2FaBAlKGhhr1ViCga1SvNBBodUo5gZugbvom0hd VuIA== X-Gm-Message-State: AOAM533SQv8fkvS+vkiSMfsVlNo1XDVsfEi9ATUQgUAsGONGvQ5WeVXm JNvl9Kn7C3n5LaDUgA1PcpoYElc0k/gp81p6zjs= X-Google-Smtp-Source: ABdhPJxAauVAVcSvs8DbveXjXHYg7cOWR6IeSIPA/N9cweNlc9BoYNiOFi5CU9kv9WbovuXYB6R31Oru0+wvibfUMU4= X-Received: by 2002:a25:ae4e:: with SMTP id g14mr13704682ybe.26.1617289637202; Thu, 01 Apr 2021 08:07:17 -0700 (PDT) MIME-Version: 1.0 References: <20210401061840.g2zzox7xy5qol7kq@nitro-5> In-Reply-To: <20210401061840.g2zzox7xy5qol7kq@nitro-5> From: Miguel Ojeda Date: Thu, 1 Apr 2021 17:07:06 +0200 Message-ID: Subject: Re: Missing RUST_EXAMPLE option in linux-next-20210331 To: Manas Cc: rust-for-linux@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org Hi Manas, On Thu, Apr 1, 2021 at 8:19 AM Manas wrote: > > I am working on a device driver in rust in linux-next as an academic > project. I used the following command to create .config: > > $ make LLVM=1 menuconfig > > But, sometimes the RUST_EXAMPLE option is not visible in menuconfig > (under /Device Drivers/Character devices/). It seemingly happens at > random that this option disappears, despite having a working rust > nightly environment (and other dependencies). > > My rust nightly version is 2021-02-20-x86_64-unknown-linux-gnu, with > rustc 1.52.0-nightly. > > Can someone point me to why is this happening? Rust support in the kernel (`RUST`) defaults to off at the moment, so if created a new configuration from scratch, it is likely that it ended up disabled, which in turn makes everything that depends on Rust disappear, including `RUST_EXAMPLE`. Please check in `General setup` --> `Rust support` if it is enabled. HTH, Cheers, Miguel