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Fri, 20 Jan 2023 16:03:42 +0100 (CET) Received: from tellis.lin.mbt.kalray.eu (unknown [192.168.36.206]) by zimbra2.kalray.eu (Postfix) with ESMTPSA id D59A827E0430; Fri, 20 Jan 2023 16:03:41 +0100 (CET) X-Virus-Scanned: E-securemail Secumail-id: DKIM-Filter: OpenDKIM Filter v2.10.3 zimbra2.kalray.eu 45A9327E0439 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kalray.eu; s=32AE1B44-9502-11E5-BA35-3734643DEF29; t=1674227022; bh=C7HrnI5K8lMVKwfpvR2iIg1M1ljeou+P3mCJSMAG91Q=; h=Date:From:To:Message-ID:MIME-Version; b=WDWoyVMbIMPbJepmJq7lETaMqJi8dXSis3WDlHnimStL/D6LcNyVKEyhwC0exaLEa /yI1hmzBWA0vpQxL61VK4pLGSFjwDaBXqRRCN+CNJkpmnVhmZT4IznmM53SL6OKcDp hoqf7NRBZhx1q/JOV6km7TyZQI9nicecKIciSZ5I= Date: Fri, 20 Jan 2023 16:03:40 +0100 From: Jules Maselbas To: Arnd Bergmann Cc: Yann Sionneau , Jonathan Corbet , Thomas Gleixner , Marc Zyngier , Rob Herring , Krzysztof Kozlowski , Will Deacon , Peter Zijlstra , Boqun Feng , Mark Rutland , "Eric W. Biederman" , Kees Cook , Oleg Nesterov , Ingo Molnar , Waiman Long , Aneesh Kumar , Andrew Morton , Nicholas Piggin , Paul Moore , Eric Paris , Christian Brauner , Paul Walmsley , Palmer Dabbelt , Albert Ou , Guillaume Thouvenin , Clement Leger , Vincent Chardon , Marc =?utf-8?b?UG91bGhpw6hz?= , Julian Vetter , Samuel Jones , Ashley Lesdalons , Thomas Costis , Marius Gligor , Jonathan Borne , Julien Villette , Luc Michel , Louis Morhet , Julien Hascoet , Jean-Christophe Pince , Guillaume Missonnier , Alex Michon , Huacai Chen , WANG Xuerui , Shaokun Zhang , John Garry , Guangbin Huang , Bharat Bhushan , Bibo Mao , Atish Patra , "Jason A . Donenfeld" , Qi Liu , Jiaxun Yang , Catalin Marinas , Mark Brown , Janosch Frank , Alexey Dobriyan , Benjamin Mugnier , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mm@kvack.org, Linux-Arch , linux-audit@redhat.com, linux-riscv@lists.infradead.org, bpf@vger.kernel.org Subject: Re: [RFC PATCH v2 09/31] kvx: Add build infrastructure Message-ID: <20230120150340.GA5952@tellis.lin.mbt.kalray.eu> References: <20230120141002.2442-1-ysionneau@kalray.eu> <20230120141002.2442-10-ysionneau@kalray.eu> <20230120145316.GA4155@tellis.lin.mbt.kalray.eu> <9965e2d1-bae8-4ce7-911c-783c772e9ff1@app.fastmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <9965e2d1-bae8-4ce7-911c-783c772e9ff1@app.fastmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-ALTERMIMEV2_out: done X-Rspamd-Queue-Id: A09D716000E X-Stat-Signature: n834trqznch6tkk6hohe65tk8e7jte7a X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1674227026-55640 X-HE-Meta: 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 /83ptgYI 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jan 20, 2023 at 04:01:11PM +0100, Arnd Bergmann wrote: > On Fri, Jan 20, 2023, at 15:53, Jules Maselbas wrote: > > On Fri, Jan 20, 2023 at 03:39:22PM +0100, Arnd Bergmann wrote: > >> On Fri, Jan 20, 2023, at 15:09, Yann Sionneau wrote: > >> > - Fix clean target raising an error from gcc (LIBGCC) > >> > >> I had not noticed this on v1 but: > >> > >> > +# Link with libgcc to get __div* builtins. > >> > +LIBGCC := $(shell $(CC) $(DEFAULT_OPTS) --print-libgcc-file-name) > >> > >> It's better to copy the bits of libgcc that you actually need > >> than to include the whole thing. The kernel is in a weird > > It was initialy using KCONFIG_CFLAGS which do not contains valid options > > when invoking the clean target. > > > > I am not exactly sure what's needed by gcc for --print-libgcc-file-name, > > my guess is that only the -march option matters, I will double check > > internally with compiler peoples. > > > >> state that is neither freestanding nor the normal libc based > >> environment, so we generally want full control over what is > >> used. This is particularly important for 32-bit architectures > >> that do not want the 64-bit division, but there are probably > >> enough other cases as well. > > To clarify: I meant you should not include libgcc.a at all but > add the minimum set of required files as arch/kvx/lib/*.S. Thanks for clarifying :) -- Jules