From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id 5270912A8 for ; Tue, 24 Nov 2015 14:57:06 +0100 (CET) Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id B4F89C1C49F1; Tue, 24 Nov 2015 13:57:04 +0000 (UTC) Received: from sopuli.koti.laiskiainen.org (vpn1-4-117.ams2.redhat.com [10.36.4.117]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id tAODv3k5020728; Tue, 24 Nov 2015 08:57:03 -0500 To: =?UTF-8?B?TWFydGlueCAtIOOCuOOCp+ODvOODoOOCug==?= , dev@dpdk.org, Neil Horman , "Gonzalez Monroy, Sergio" References: From: Panu Matilainen Message-ID: <56546CAE.8050401@redhat.com> Date: Tue, 24 Nov 2015 15:57:02 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 Subject: Re: [dpdk-dev] Can't compile DPDK if both CONFIG_RTE_BUILD_COMBINE_LIBS and LIBRTE_PMD_XENVIRT are set to "yes" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Nov 2015 13:57:06 -0000 On 11/23/2015 08:37 PM, Martinx - ジェームズ wrote: > Hello! > > My name is Thiago, I'm trying to compile DPDK 2.0, 2.1 and/or 2.2-rc1, > on Ubuntu with Xen support but, it does not build... > > Also, initially, I'm using DPDK sources from Ubuntu APT repository > but, it is also reproducible using upstream DPDK tarball as well, > explained as follows: > > Problem: > > * It is not possible to use the following DPDK options at the same time: > > CONFIG_RTE_BUILD_COMBINE_LIBS > LIBRTE_PMD_XENVIRT > > Ubuntu DPDK .deb package uses CONFIG_RTE_BUILD_COMBINE_LIBS and, > without it, it can't build its .deb binary package (step: "make -f > debian/rules binary" doesn't work). > > So, if you have the above two options set to "yes", the following > error appear while building DPDK: > > http://pastebin.com/xUsQPxh8 > [...] > Build error: > > http://pastebin.com/fuUkpF4w > > If you remove "CONFIG_RTE_BUILD_COMBINE_LIBS", then, you can build it > with "LIBRTE_PMD_XENVIRT", and vice-versa. But, without > "...COMBINE_LIBS", Ubuntu .deb package doesn't get builded. > > BTW, the option LIBRTE_XEN_DOM0 is fine when also enabling COMBINE_LIBS... > > Am I missing something? Is this by design or a DPDK bug? DPDK bug I would say. The combined library has been increasingly in risk of collapsing under its own weight for some time now. A much better way of achieving the same is using a so called linker script which is essentially just an ascii file listing all the individual libraries which the linker handles behind the scenes. FWIW, that's how the combined library is packaged on Fedora and RHEL and consumers like OVS and pktgen never knew the difference. The linker script approach has been suggested before but somehow the threads died without nothing actually happening. I'll revive the patch and post here shortly. Unless Sergio (cc'd) who previously worked on the patches has a newer version cooking silently? P.S. I know, a "linker script" sounds exotic but they're actually rather commonplace. On an average Linux system, libc.so is a linker script for example. - Panu -