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 50602C04A6A for ; Sat, 29 Jul 2023 08:35:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231218AbjG2Ifq (ORCPT ); Sat, 29 Jul 2023 04:35:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230468AbjG2Ifm (ORCPT ); Sat, 29 Jul 2023 04:35:42 -0400 Received: from 1wt.eu (ded1.1wt.eu [163.172.96.212]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id F120144A9; Sat, 29 Jul 2023 01:35:37 -0700 (PDT) Received: (from willy@localhost) by pcw.home.local (8.15.2/8.15.2/Submit) id 36T8ZUFU004434; Sat, 29 Jul 2023 10:35:30 +0200 Date: Sat, 29 Jul 2023 10:35:30 +0200 From: Willy Tarreau To: Zhangjin Wu Cc: thomas@t-8ch.de, arnd@arndb.de, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH v3 06/12] selftests/nolibc: customize CROSS_COMPILE for 32/64-bit powerpc Message-ID: <20230729083530.GN956@1wt.eu> References: <41e2aa9e4299dd35cfeef9fecc2a6a02a7b49d90.1690489039.git.falcon@tinylab.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <41e2aa9e4299dd35cfeef9fecc2a6a02a7b49d90.1690489039.git.falcon@tinylab.org> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 28, 2023 at 04:28:17AM +0800, Zhangjin Wu wrote: > The little-endian powerpc64le compilers provided by Ubuntu and Fedora > are able to compile big endian kernel and big endian nolibc-test [1]. > > These default CROSS_COMPILE settings allow to test target architectures > with: > > $ cd /path/to/tools/testing/selftests/nolibc/ > > $ for arch in ppc ppc64 ppc64le; do \ > make run-user ARCH=$arch | grep "status: "; \ > done > > If want to use another cross compiler, please simply pass CROSS_COMPILE > or CC as before. > > For example, it is able to build 64-bit nolibc-test with the big endian > powerpc64-linux-gcc crosstool from [2]: > > $ wget -c https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/13.1.0/x86_64-gcc-13.1.0-nolibc-powerpc64-linux.tar.xz > $ tar xvf x86_64-gcc-13.1.0-nolibc-powerpc64-linux.tar.xz > $ export PATH=$PWD/gcc-13.1.0-nolibc/powerpc64-linux/bin/:$PATH > > $ export CROSS_COMPILE_ppc64=powerpc64-linux- > $ export CROSS_COMPILE_ppc64le=powerpc64-linux- > $ for arch in ppc64 ppc64le; do \ > make run-user ARCH=$arch | grep "status: "; \ > done > > Or specify CC directly with full path: > > $ export CC=$PWD/gcc-13.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc > $ for arch in ppc64 ppc64le; do \ > make run-user ARCH=$arch | grep "status: "; \ > done > > [1]: https://github.com/open-power/skiboot > [2]: https://mirrors.edge.kernel.org/pub/tools/crosstool/ > > Signed-off-by: Zhangjin Wu > --- > tools/testing/selftests/nolibc/Makefile | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile > index 3f15c7f7ef76..6385915d16c9 100644 > --- a/tools/testing/selftests/nolibc/Makefile > +++ b/tools/testing/selftests/nolibc/Makefile > @@ -46,6 +46,9 @@ IMAGE = $(IMAGE_$(XARCH)) > IMAGE_NAME = $(notdir $(IMAGE)) > > # CROSS_COMPILE: cross toolchain prefix by architecture > +CROSS_COMPILE_ppc ?= powerpc-linux-gnu- > +CROSS_COMPILE_ppc64 ?= powerpc64le-linux-gnu- > +CROSS_COMPILE_ppc64le ?= powerpc64le-linux-gnu- > CROSS_COMPILE ?= $(CROSS_COMPILE_$(XARCH)) It seems to me that this patch and the previous one were rather for the PPC series as I'm not seeing the relation with the tiny config here. Willy