Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933772AbcKGTL1 (ORCPT ); Mon, 7 Nov 2016 14:11:27 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:56129 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932817AbcKGTLT (ORCPT ); Mon, 7 Nov 2016 14:11:19 -0500 Subject: Re: Makefile race in 4.9-rc3 (generated/autoksyms.h: No such file or directory) To: Ken Moffat , linux-kernel@vger.kernel.org, linux-kbuild , Michal Marek References: From: Randy Dunlap Message-ID: Date: Mon, 7 Nov 2016 11:11:18 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1760 Lines: 43 [adding linux-kbuild and Michal] [trying again] On 10/31/16 13:46, Ken Moffat wrote: > I just tried to build 4.9 (rc3) for the first time (x86_64, i7 haswell) > After making my choices in make oldconfig, make -j8 failed in > less than 2 sec. > > CC scripts/mod/empty.o > HOSTCC scripts/mod/mk_elfconfig > HOSTCC scripts/sortextable > CC scripts/mod/devicetable-offsets.s > In file included from ./include/linux/linkage.h:6:0, > from ./include/linux/kernel.h:6, > from ./include/asm-generic/bug.h:13, > from ./arch/x86/include/asm/bug.h:35, > from ./include/linux/bug.h:4, > from ./include/linux/jump_label.h:170, > from ./arch/x86/include/asm/string_64.h:5, > from ./arch/x86/include/asm/string.h:4, > from ./include/linux/string.h:18, > from ./include/uapi/linux/uuid.h:21, > from ./include/linux/uuid.h:19, > from ./include/linux/mod_devicetable.h:12, > from scripts/mod/devicetable-offsets.c:2: > ./include/linux/export.h:81:33: fatal error: generated/autoksyms.h: No > such file or directory > #include > ^ > compilation terminated. > make[2]: *** [scripts/Makefile.build:154: > scripts/mod/devicetable-offsets.s] Error 1 > make[1]: *** [scripts/Makefile.build:475: scripts/mod] Error 2 > make[1]: *** Waiting for unfinished jobs.... > make: *** [Makefile:559: scripts] Error 2 > make: *** Waiting for unfinished jobs.... > > I then ran make clean and gave it another try, again using -j8. > This time i t worked, so I guess there is a race in a Makefile. -- ~Randy