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 6CF44C38145 for ; Tue, 6 Sep 2022 23:35:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229732AbiIFXfC (ORCPT ); Tue, 6 Sep 2022 19:35:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40802 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229711AbiIFXe6 (ORCPT ); Tue, 6 Sep 2022 19:34:58 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D8C731EF2; Tue, 6 Sep 2022 16:34:56 -0700 (PDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4MMhYq38SZz4xD3; Wed, 7 Sep 2022 09:34:39 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1662507291; bh=4US3THlCO1EMb1gSb9ztork5wBimNJa/nZMcdS+Fg/M=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=VE9G55kF0YvBPTmfEKRNLaOLD928FpPFqAcNpL+f8KrrJ98Z6/s7Ls4ACxDbQLjiz E4hCICN6PrT1JV2Doci74i6u8iUELHz6WKa8weEmztx+WhmmFKzJcxoPtF0rjggIKm BxWXqa3X6MefPexoJt+3HkCQG+lj0E3/25I9+R69dkW0ybhEIbZYoAeJYlfHpx/47O +OsAyVQq2IrWk3kDEj8NBKVhMDl9QoQPtrUhII0czRT5IizvjFTt7liWxxkcoVacqF jNKoxW2w8uKB9ovSNUnPneATOBtcgGJn4FyjeS4nZe4Px07FEr1ktrhp2CX3Vu8dGP TTu5Vt4Ozw+Sg== From: Michael Ellerman To: Masahiro Yamada , Miguel Ojeda Cc: Linus Torvalds , Greg Kroah-Hartman , rust-for-linux@vger.kernel.org, Linux Kernel Mailing List , Jarkko Sakkinen , Alex Gaynor , Finn Behrens , Adam Bratschi-Kaye , Wedson Almeida Filho , Sven Van Asbroeck , Gary Guo , Boris-Chengbiao Zhou , Boqun Feng , Douglas Su , Dariusz Sosnowski , Antonio Terceiro , Daniel Xu , Miguel Cano , David Gow , Tiago Lam , =?utf-8?Q?Bj=C3=B6rn?= Roy Baron , Martin Rodriguez Reboredo , Michal Marek , Nick Desaulniers , Russell King , Catalin Marinas , Will Deacon , Benjamin Herrenschmidt , Paul Mackerras , Paul Walmsley , Palmer Dabbelt , Albert Ou , Richard Weinberger , Anton Ivanov , Johannes Berg , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , X86 ML , "H. Peter Anvin" , Linux Kbuild mailing list , linux-arm-kernel , linuxppc-dev , "open list:SIFIVE DRIVERS" , linux-um@lists.infradead.org Subject: Re: [PATCH v8 27/31] Kbuild: add Rust support In-Reply-To: References: <20220802015052.10452-1-ojeda@kernel.org> <20220802015052.10452-28-ojeda@kernel.org> Date: Wed, 07 Sep 2022 09:34:38 +1000 Message-ID: <8735d4t6up.fsf@mpe.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Masahiro Yamada writes: > On Tue, Aug 2, 2022 at 10:53 AM Miguel Ojeda wrote: >> >> Having all the new files in place, we now enable Rust support >> in the build system, including `Kconfig` entries related to Rust, >> the Rust configuration printer, the target specification >> generation script, the version detection script and a few >> other bits. ... >> + >> +config RUSTC_VERSION_TEXT >> + string >> + depends on RUST >> + default $(shell,command -v $(RUSTC) >/dev/null 2>&1 && $(RUSTC) --version || echo n) >> + >> +config BINDGEN_VERSION_TEXT >> + string >> + depends on RUST >> + default $(shell,command -v $(BINDGEN) >/dev/null 2>&1 && $(BINDGEN) --version || echo n) >> + > > Where are these config options used? > > I grep'ed but no hit. > > masahiro@zoe:~/ref/linux-next$ git grep RUSTC_VERSION_TEXT > init/Kconfig:config RUSTC_VERSION_TEXT > masahiro@zoe:~/ref/linux-next$ git grep BINDGEN_VERSION_TEXT > init/Kconfig:config BINDGEN_VERSION_TEXT That came up before in a review by Nick: Miguel wrote: > Nick wrote: > > Are these two kconfigs used anywhere? > > Not for the moment, but it could still be useful when getting > `.config` reports (and we could add it to `LINUX_COMPILER` etc. in the > future). https://lore.kernel.org/all/CANiq72n2bU3LSGu-4v66nif_95EVq--z2X_F2V7JBPU8v=h8EA@mail.gmail.com/ cheers