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=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id A1E3BC433EF for ; Thu, 14 Jun 2018 03:39:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4085E208B5 for ; Thu, 14 Jun 2018 03:39:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PMGoAlys" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4085E208B5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936038AbeFNDja (ORCPT ); Wed, 13 Jun 2018 23:39:30 -0400 Received: from mail-oi0-f67.google.com ([209.85.218.67]:38322 "EHLO mail-oi0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935864AbeFNDj2 (ORCPT ); Wed, 13 Jun 2018 23:39:28 -0400 Received: by mail-oi0-f67.google.com with SMTP id d5-v6so4384874oib.5; Wed, 13 Jun 2018 20:39:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:openpgp:autocrypt:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=KfIoPW3SNvUti2MG+32XvhJV8ICkrHpUg1iT1vJh5Es=; b=PMGoAlysopWuTkWImOfjDZS5Fjar+v6SBw1kavqOM8NJzqmK2tT2T2mUFnP0CVwtRW GfOscshJbUYprwIbWy+Xk0ZBAmQ5kvUk4Ueb59NANXRWud21jZ925GhTwi05CA5d8E9w 3Mx+aPF9pmxlae7N+b4gKosKGZySNTqpaSUjrOw7gBeKPi7duwqgSfuuZiKi78jW9u0r WwRV/aU6lV/PB25n12G2fPthhBUmd00R3AKIMMGMeFS2U+XyV2JcZU65KW5IK2CYZHu+ B9sLxK+Vm0xbEXGM3gvC0WXSQsb/+s3+LbpzZeI4BV0+bv1kkZo1Ncodmi9/aaCMq/Bp glbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:openpgp:autocrypt:message-id :date:user-agent:mime-version:content-language :content-transfer-encoding; bh=KfIoPW3SNvUti2MG+32XvhJV8ICkrHpUg1iT1vJh5Es=; b=ntN1RTMWBmSaEC8BaSVHgMlB6IaDAdyW7MamgDrZ7i3jv0Zm0TA1W2F+HIirbEBmc9 7h5mKqs+dJuJI8mmJ4KX0ZtLWu80nHw+yl9V1n6gdO8Li3b5+aCVK305hWJySSWdYR9D yYBGxdqKOdHRQaMCbqUg1fuirRS+T/zxaTSxHgVuP9FUWh5kmmsHqbVmpRs6FCBr6Vf7 jMQAnsl3Sgf8Pm3dtr0oNWq4rfExQDiAh8fXLgK1YLwk25JLhIhRxKfe+BTIwbT+Zk88 1i3YdbmxUlapbuhJLJKXwstoLAej8z595q9fNdefXZn1ExDayZ4imC8E2kvIdHAhYpGM nIPg== X-Gm-Message-State: APt69E3gj/SjqIA9aul86uJgKIS/pOTFUQ12LmjSPf8Qnqja4sDhgYLQ LdmQh1H/5lRDhiQsUJ67bAs= X-Google-Smtp-Source: ADUXVKKBEoYPVT6kwyH1hQuOUxvH6YudxJDvKUiq/lFLckXuh3pls9XdxTMVJSqIe/qj5gpOo0V84g== X-Received: by 2002:aca:7255:: with SMTP id p82-v6mr456744oic.256.1528947567446; Wed, 13 Jun 2018 20:39:27 -0700 (PDT) Received: from [192.168.1.3] (ip68-109-195-31.pv.oc.cox.net. [68.109.195.31]) by smtp.gmail.com with ESMTPSA id r8-v6sm1851182oif.25.2018.06.13.20.39.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 Jun 2018 20:39:26 -0700 (PDT) To: linux-kselftest@vger.kernel.org, shuah@kernel.org, open list , "David S. Miller" , bamvor.zhangjian@linaro.org From: Florian Fainelli Subject: Improving kselfests cross compilation Openpgp: preference=signencrypt Autocrypt: addr=f.fainelli@gmail.com; prefer-encrypt=mutual; keydata= xsDiBEjPuBIRBACW9MxSJU9fvEOCTnRNqG/13rAGsj+vJqontvoDSNxRgmafP8d3nesnqPyR xGlkaOSDuu09rxuW+69Y2f1TzjFuGpBk4ysWOR85O2Nx8AJ6fYGCoeTbovrNlGT1M9obSFGQ X3IzRnWoqlfudjTO5TKoqkbOgpYqIo5n1QbEjCCwCwCg3DOH/4ug2AUUlcIT9/l3pGvoRJ0E AICDzi3l7pmC5IWn2n1mvP5247urtHFs/uusE827DDj3K8Upn2vYiOFMBhGsxAk6YKV6IP0d ZdWX6fqkJJlu9cSDvWtO1hXeHIfQIE/xcqvlRH783KrihLcsmnBqOiS6rJDO2x1eAgC8meAX SAgsrBhcgGl2Rl5gh/jkeA5ykwbxA/9u1eEuL70Qzt5APJmqVXR+kWvrqdBVPoUNy/tQ8mYc nzJJ63ng3tHhnwHXZOu8hL4nqwlYHRa9eeglXYhBqja4ZvIvCEqSmEukfivk+DlIgVoOAJbh qIWgvr3SIEuR6ayY3f5j0f2ejUMYlYYnKdiHXFlF9uXm1ELrb0YX4GMHz80nRmxvcmlhbiBG YWluZWxsaSA8Zi5mYWluZWxsaUBnbWFpbC5jb20+wmYEExECACYCGyMGCwkIBwMCBBUCCAME FgIDAQIeAQIXgAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2DvCVAJ4u4/bPF4P3jxb4qEY8I2gS 6hG0gACffNWlqJ2T4wSSn+3o7CCZNd7SLSDOw00ESM+4EhAQAL/o09boR9D3Vk1Tt7+gpYr3 WQ6hgYVON905q2ndEoA2J0dQxJNRw3snabHDDzQBAcqOvdi7YidfBVdKi0wxHhSuRBfuOppu pdXkb7zxuPQuSveCLqqZWRQ+Cc2QgF7SBqgznbe6Ngout5qXY5Dcagk9LqFNGhJQzUGHAsIs hap1f0B1PoUyUNeEInV98D8Xd/edM3mhO9nRpUXRK9Bvt4iEZUXGuVtZLT52nK6Wv2EZ1TiT OiqZlf1P+vxYLBx9eKmabPdm3yjalhY8yr1S1vL0gSA/C6W1o/TowdieF1rWN/MYHlkpyj9c Rpc281gAO0AP3V1G00YzBEdYyi0gaJbCEQnq8Vz1vDXFxHzyhgGz7umBsVKmYwZgA8DrrB0M oaP35wuGR3RJcaG30AnJpEDkBYHznI2apxdcuTPOHZyEilIRrBGzDwGtAhldzlBoBwE3Z3MY 31TOpACu1ZpNOMysZ6xiE35pWkwc0KYm4hJA5GFfmWSN6DniimW3pmdDIiw4Ifcx8b3mFrRO BbDIW13E51j9RjbO/nAaK9ndZ5LRO1B/8Fwat7bLzmsCiEXOJY7NNpIEpkoNoEUfCcZwmLrU +eOTPzaF6drw6ayewEi5yzPg3TAT6FV3oBsNg3xlwU0gPK3v6gYPX5w9+ovPZ1/qqNfOrbsE FRuiSVsZQ5s3AAMFD/9XjlnnVDh9GX/r/6hjmr4U9tEsM+VQXaVXqZuHKaSmojOLUCP/YVQo 7IiYaNssCS4FCPe4yrL4FJJfJAsbeyDykMN7wAnBcOkbZ9BPJPNCbqU6dowLOiy8AuTYQ48m vIyQ4Ijnb6GTrtxIUDQeOBNuQC/gyyx3nbL/lVlHbxr4tb6YkhkO6shjXhQh7nQb33FjGO4P WU11Nr9i/qoV8QCo12MQEo244RRA6VMud06y/E449rWZFSTwGqb0FS0seTcYNvxt8PB2izX+ HZA8SL54j479ubxhfuoTu5nXdtFYFj5Lj5x34LKPx7MpgAmj0H7SDhpFWF2FzcC1bjiW9mjW HaKaX23Awt97AqQZXegbfkJwX2Y53ufq8Np3e1542lh3/mpiGSilCsaTahEGrHK+lIusl6mz Joil+u3k01ofvJMK0ZdzGUZ/aPMZ16LofjFA+MNxWrZFrkYmiGdv+LG45zSlZyIvzSiG2lKy kuVag+IijCIom78P9jRtB1q1Q5lwZp2TLAJlz92DmFwBg1hyFzwDADjZ2nrDxKUiybXIgZp9 aU2d++ptEGCVJOfEW4qpWCCLPbOT7XBr+g/4H3qWbs3j/cDDq7LuVYIe+wchy/iXEJaQVeTC y5arMQorqTFWlEOgRA8OP47L9knl9i4xuR0euV6DChDrguup2aJVU8JPBBgRAgAPAhsMBQJU X9LxBQkeXB3fAAoJEGFXmRW1Y3YOj4UAn3nrFLPZekMeqX5aD/aq/dsbXSfyAKC45Go0YyxV HGuUuzv+GKZ6nsysJw== X-Enigmail-Draft-Status: N11100 Message-ID: <19ec8c01-15a0-eca2-cf6c-08c71b670dab@gmail.com> Date: Wed, 13 Jun 2018 20:39:24 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Shuah, I was giving a shot at building the kselftests from within buildroot [1] as of Linux be779f03d563981c65cc7417cc5e0dbbc5b89d30 and there are a number of things that make it still reasonably hard even today: - 3c545084130c1fd5cf873a5fec3ee29070128e06 ("selftests: sparc64: char: Selftest for privileged ADI driver") this contains inline assembly that can only work when building for sparc64, yet this is still being built irrespective of what ARCH is set to - each Makefile that requires knowledge of the architecture seems to duplicate what ARCH should be, this cannot be moved to lib.mk since Makefiles do expect lib.mk to be included last and/or after they have done their own overrides, but something like common.mk which contains CC, ARCH etc. could be useful to avoid the repetition of looking at uname -m etc. etc. - some tests' Makefile do seem to hardcode paths to the system's include instead of accepting a configurable path: gpio/Makefile: LDLIBS += -lmount -I/usr/include/libmount I will try to submit patches in the next days that address the most obvious issues I listed here, but in order for this effort not to be a constant whack-a-mole game, there really needs to be at least one or two architectures that must attempt to cross-compile (and run) those tests and use that as an acceptance criteria. Thanks for reading. [1]: https://git.buildroot.org/buildroot/tree/package/linux-tools/linux-tool-selftests.mk.in -- Florian