From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org by pdx-caf-mail.web.codeaurora.org (Dovecot) with LMTP id R2zZIBDIGVtKagAAmS7hNA ; Fri, 08 Jun 2018 00:07:13 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 097326074D; Fri, 8 Jun 2018 00:07:13 +0000 (UTC) Authentication-Results: smtp.codeaurora.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="JERBz0pq" X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by smtp.codeaurora.org (Postfix) with ESMTP id 6AF4960290; Fri, 8 Jun 2018 00:07:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 6AF4960290 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752475AbeFHAHJ (ORCPT + 25 others); Thu, 7 Jun 2018 20:07:09 -0400 Received: from merlin.infradead.org ([205.233.59.134]:59210 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752449AbeFHAHG (ORCPT ); Thu, 7 Jun 2018 20:07:06 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=Content-Type:In-Reply-To:MIME-Version: Date:Message-ID:From:References:Cc:To:Subject:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=luodI2Y1LPtjolK47Bhx+AS0gYS+PZBx1b5+Ma50Cd0=; b=JERBz0pqyt8kOYPfyeahWPqhP XW6QvOBThtNbn+NPsHQ79jOZEdxax2mq1EGqOiISnB+IPtaq3a+93ubHvURgb+oeZfA8nzn+YKhoi tRVtLMQWyFmDY+ydLbIBTLkGMkvMQe1p4/stsD1l2DFiNSlUUdDbLZT8pmcFp9P1kx2To1Mc3+VdO Hr9H7EEALRh9sDF8aXJpD/6TCj0VwcMQHAfjmWPkiSKURZmtrxZwFCDf2akCHmCZ7JLwa/odhYkrv fvdE84MSkc94Wxfq/+28BB3XDOXp9n/Vsj3l28Eqqc3lY4903IpWiMbUkQiiXxEpqs7g7Tkb0NtNi QcB+qLBng==; Received: from static-50-53-52-16.bvtn.or.frontiernet.net ([50.53.52.16] helo=midway.dunlab) by merlin.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1fR4vn-0003xm-U9; Fri, 08 Jun 2018 00:07:04 +0000 Subject: Re: [PATCH] uapi: Make generic uapi headers compile standalone. To: Jayant Chowdhary , linux-kernel@vger.kernel.org Cc: akpm@linux-foundation.org, kernel-team@android.com, linux-kbuild@vger.kernel.org References: <20180606231602.231326-1-jchowdhary@google.com> From: Randy Dunlap Message-ID: Date: Thu, 7 Jun 2018 17:07:01 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180606231602.231326-1-jchowdhary@google.com> Content-Type: multipart/mixed; boundary="------------B62B25DCCC7D3ABB45F9F1E7" Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------B62B25DCCC7D3ABB45F9F1E7 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit On 06/06/2018 04:16 PM, Jayant Chowdhary wrote: > In order for static analysis tools to analyze each of the uapi headers, > we need to enable them to compile stand-alone. Some uapi headers were > missing dependencies which would not make them compile stand-alone in > user-land. This patch adds those dependencies. Hi, Thanks for getting started on this. I see that the kbuild robot and I were still not able to do successful builds even after this patch is applied. We were building different targets though. robot was doing kernel builds and I was doing a large "all-uapi" build. I started on my all-uapi work about 1 week ago but haven't posted anything yet, but it's posted (attached) below. It's not yet up to kernel quality yet (for a Makefile), and I have made very little progress toward a successful userspace build. If anyone is interested, just put these 3 files in /tools/build and then run: make ARCH=$some_arch O=build_dir headers_check so that the headers will be cleaned up and installed in build_dir/usr/. Then run 'make -f all-uapi.mk' and the userspace program with all header files found in build_dir/usr/include will be built -- i.e., attempted (not successfully). (note: chmod +x hdr-fix-lines.pl) -- ~Randy --------------B62B25DCCC7D3ABB45F9F1E7 Content-Type: text/x-makefile; name="all-uapi.mk" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="all-uapi.mk" # all-uapi.mk # currently resides in tools/build/ # # before running 'make -f all-uapi.mk', # run (from top of kernel tree): make ARCH=arch O=dir headers_check # so that the uapi headers will be installed. srctree=../.. CC=gcc all: all-uapi.h all-uapi.o all-uapi.h: all-uapi.mk hdr-fix-lines.pl rm -f all-uapi.h touch all-uapi.h # find $(srctree)/xx64/usr/include/uapi -type f | grep -v \\.orig | find $(srctree)/xx64/usr/include -type f | grep -v \\.orig | \ ./hdr-fix-lines.pl >>all-uapi.h all-uapi.o: all-uapi.h $(CC) -I../../xx64/usr/include all-uapi.c -o all-uapi.o --------------B62B25DCCC7D3ABB45F9F1E7 Content-Type: text/x-csrc; name="all-uapi.c" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="all-uapi.c" // SPDX GPL 2.0 // This userspace source file pulls in all #include header files // to see what kinds of problems happen. #include #include #include #include #include #include "all-uapi.h" int main(int argc, char *argv[]) { } --------------B62B25DCCC7D3ABB45F9F1E7 Content-Type: application/x-perl; name="hdr-fix-lines.pl" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="hdr-fix-lines.pl" #! /usr/bin/perl # $_ is a filename like ../../include/uapi/linux/prctl.h # convert it to be like: $include # input via stdin; output to stdout. # vi:ts=4 LINE: while ($line = ) { chomp $line; # drop ending newline # skip if not a .h file next LINE if ($line !~ m/\.h$/); # skip any /asm.*posix_types/ next LINE if ($line =~ "asm.*posix_types"); $line =~ s@^.*include/@#include <@; $line =~ s@\.h$@.h>@; print "$line\n"; } ### < STDIN --------------B62B25DCCC7D3ABB45F9F1E7--