From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A1264A0A03; Mon, 18 Jan 2021 11:51:21 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 8B9DF140D1A; Mon, 18 Jan 2021 11:51:21 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by mails.dpdk.org (Postfix) with ESMTP id 2EDD0140D17 for ; Mon, 18 Jan 2021 11:51:19 +0100 (CET) IronPort-SDR: vmSjIzOyDI69EcxgFBrFgIERDykAbCOSHWd/Vby7LtaESyGQAjrUqykcLG5hUM8NXD72oGlbXT dajtPr4s8uig== X-IronPort-AV: E=McAfee;i="6000,8403,9867"; a="158560910" X-IronPort-AV: E=Sophos;i="5.79,356,1602572400"; d="scan'208";a="158560910" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Jan 2021 02:51:18 -0800 IronPort-SDR: XsXe74HsVonUMOfsr6qz/fg3skPtw4hBbLzXW88w0hdaYXT+hN3RFK1rD/5Ys/Zw8scZHq2w9n NEQpIDnABbTw== X-IronPort-AV: E=Sophos;i="5.79,356,1602572400"; d="scan'208";a="383525751" Received: from bricha3-mobl.ger.corp.intel.com ([10.252.8.248]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-SHA; 18 Jan 2021 02:51:16 -0800 Date: Mon, 18 Jan 2021 10:51:13 +0000 From: Bruce Richardson To: Ferruh Yigit Cc: Hemant Agrawal , Akhil Goyal , "dev@dpdk.org" , David Marchand Message-ID: <20210118105113.GA749@bricha3-MOBL.ger.corp.intel.com> References: <20201221140402.GB1753@bricha3-MOBL.ger.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Subject: Re: [dpdk-dev] meson: wrong dependency in cross compilation on ARM X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Fri, Jan 15, 2021 at 06:40:56PM +0000, Ferruh Yigit wrote: > On 12/21/2020 2:04 PM, Bruce Richardson wrote: > > On Mon, Dec 21, 2020 at 12:19:17PM +0000, Hemant Agrawal wrote: > > > Hi, > > > I am trying to cross compile DPDK for arm64 on a ubuntu machine, which has a zlib pre-installed for native env. > > > > > > I am encountering following build error in net_bnx2x as it has dependency on zlib. It is trying to link with x86 arch based zlib. > > > > > > Cross compiling zlib and setting the PKG_CONFIG_PATH solve the issue. But, Is their an easy way to disable these dependencies? > > > > > Can you try with setting PKG_CONFIG_LIBDIR rather than PKG_CONFIG_PATH? > > PKG_CONFIG_PATH simply extends the search locations, which means that > > host-paths will still be searched, while PKG_CONFIG_LIBDIR replaces the > > default path, eliminating the host-based search paths. > > > > The 'PKG_CONFIG_LIBDIR' seems not taken into account by meson, Akhil > reported a 32bit build error when zlib is missing, I can reproduce the same. > > I have only 64bit version of the library: > > $ pkg-config --path zlib > /usr/lib64/pkgconfig/zlib.pc > > $ PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig/ pkg-config --path zlib > > $ echo $? > 1 > > When I run the meson as following: > "PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig/ meson --werror -Dc_args=-m32 > -Dc_link_args=-m32 -Dexamples=all build32" > > It still detects the zlib: > Run-time dependency zlib found: YES 1.2.11 > I've just tried this on my system and it works as expected: the 32-bit lib is not found and a build succeeds. Omitting the PKG_CONFIG_LIBDIR and it is found, but linking fails due to "file in wrong format" errors, again as expected. In your case, I suspect it might be meson falling back to cmake in the detection logic. If you have cmake installed on your system, can you perhaps temporarily remove it, and retry the 32-bit build? If that is the cause, we can modify the dependency call to add "method: 'pkg-config'" to it, to force pkg-config searches only. /Bruce