From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E058815D5C0; Thu, 1 Feb 2024 11:52:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706788340; cv=none; b=WANCKuuhN8+uysIfFhhWnGnK0mv84bVhEyNBd1+LNKfDg+g+bo7K3U6oTeB27YnIY84XNvX+OvWFAo7voB8q0DBvaPl135fp4iWpiY5+IHqjYDA0glexrHou5dsX4hYVTx4XxT3yK9KLbpCwmjpBA6nlnUFDe6Aa857dWbLvjJ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706788340; c=relaxed/simple; bh=qcvpKI9J5YCFjyu0moCdoE2FxEsaXoox4FAuQomdOnk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=GTqIKMa9MsmpPzO4J4eW++Izpe2oedAkvOvtHu0KS/Gky4r9T8Uycc7IzU8gOS3xz8Z7aaijQThawj0roMKO7jAnbhb32mu18/vThwmZ0Cb/OO074nGG5jPyjrpC2wadiDEOxYTC648VW2QpbfdUkJP/7QCOvWNUxl1WcYnG+yU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 15C58DA7; Thu, 1 Feb 2024 03:53:01 -0800 (PST) Received: from [192.168.1.100] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E2C883F762; Thu, 1 Feb 2024 03:52:16 -0800 (PST) Message-ID: <511f5874-3c97-5928-fd59-b49516ca6b2a@arm.com> Date: Thu, 1 Feb 2024 11:52:07 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: Perf not able to cross compile Content-Language: en-US To: Anders Roxell , linux-perf-users@vger.kernel.org, Linux Kernel Mailing List Cc: Arnaldo Carvalho de Melo , Arnd Bergmann , Mark Brown References: From: James Clark In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 01/02/2024 11:32, Anders Roxell wrote: > Hey, > > I'm trying to cross compile perf ARCH=arm64 on my x86_64 host from > linus tree [1], branch master. > > > This is the failue I see, full log [2]: > > ... > CC /home/tuxbuild/.cache/tuxmake/builds/1/build/libbpf/staticobjs/elf.o > CC /home/tuxbuild/.cache/tuxmake/builds/1/build/libbpf/staticobjs/features.o > cc1: error: ‘-fcf-protection=full’ is not supported for this target > error: command '/usr/local/bin/sccache' failed with exit code 1 > cp: cannot stat > '/home/tuxbuild/.cache/tuxmake/builds/1/build/python_ext_build/lib/perf*.so': > No such file or directory > make[2]: *** [Makefile.perf:678: > /home/tuxbuild/.cache/tuxmake/builds/1/build/python/perf.cpython-311-x86_64-linux-gnu.so] > Error 1 > make[2]: *** Waiting for unfinished jobs.... > LD /home/tuxbuild/.cache/tuxmake/builds/1/build/libbpf/staticobjs/libbpf-in.o > LINK /home/tuxbuild/.cache/tuxmake/builds/1/build/libbpf/libbpf.a > make[1]: *** [Makefile.perf:261: sub-make] Error 2 > make: *** [Makefile:70: all] Error 2 > > Running 'x86_64-linux-gnu-python3-config --cflags' I see > '-fcf-protection' in the output and this happens when I'm building > cross compile arm64 on my x86_64 host machine. Building on an arm64 > host works. cross compile x86_64 on my x86_64 host works too. > > I have 'aarch64-linux-gnu-python3-config' installed but that isn't used. > > $ x86_64-linux-gnu-python3-config --cflags > -I/usr/include/python3.11 -I/usr/include/python3.11 -Wsign-compare -g > -fstack-protector-strong -fstack-clash-protection -Wformat > -Werror=format-security -fcf-protection -DNDEBUG -g -fwrapv -O2 -Wall > $ aarch64-linux-gnu-python3-config --cflags > -I/usr/include/python3.11 -I/usr/include/python3.11 -Wsign-compare -g > -fstack-protector-strong -fstack-clash-protection -Wformat > -Werror=format-security -mbranch-protection=standard -DNDEBUG -g > -fwrapv -O2 -Wall > > I tried to set PYTHON and PYTHON_CONFIG too, but didn't work. > > It doesn't try to use $(CROSS_COMPILE)python3-config, any idea how to > use the correct config? > > Cheers, > Anders > [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > [2] https://storage.tuxsuite.com/public/linaro/lkft/builds/2bc6x6cISHzG9Jgo0oAVv2OgLOG/build.log Hi Anders, I see something similar but in the end it works. Despite the name, I also get perf.cpython-311-x86_64-linux-gnu.so generated in my build, but it's actually an arm binary. For me I'm using python3.10, and the x86 config options don't include -fcf-protection which is probably why it can compile successfully with the arm compiler. It looks like your assumption is correct and it's not using $(CROSS_COMPILE)python3-config but just python3-config. The answer to how to fix it is probably to start hacking at the makefiles, if PYTHON and PYTHON_CONFIG don't work either. James