From patchwork Fri Nov 16 15:47:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hunt, David" X-Patchwork-Id: 48161 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 207304CB5; Fri, 16 Nov 2018 16:47:52 +0100 (CET) Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by dpdk.org (Postfix) with ESMTP id 41C1B2BD8 for ; Fri, 16 Nov 2018 16:47:50 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Nov 2018 07:47:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,240,1539673200"; d="scan'208";a="280558186" Received: from silpixa00399952.ir.intel.com (HELO silpixa00399952.ger.corp.intel.com) ([10.237.223.64]) by fmsmga005.fm.intel.com with ESMTP; 16 Nov 2018 07:47:47 -0800 From: David Hunt To: dev@dpdk.org Cc: john.mcnamara@intel.com, thomas@monjalon.net, marko.kovacevic@intel.com, David Hunt Date: Fri, 16 Nov 2018 15:47:21 +0000 Message-Id: <20181116154721.56245-1-david.hunt@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181101165549.17497-1-david.hunt@intel.com> References: <20181101165549.17497-1-david.hunt@intel.com> Subject: [dpdk-dev] [PATCH v2] doc/power: add info on jansson conditional build X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 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" Add more info to the docs on how to set environmental variable to correctly build the vm_power_manager sample app in a cross compile or multilib environment by setting PKG_CONFIG_LIBDIR. Signed-off-by: David Hunt Acked-by: Marko Kovacevic --- v2: Changed the note to be shown using the ``.. Note::`` tag. --- .../sample_app_ug/vm_power_management.rst | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/doc/guides/sample_app_ug/vm_power_management.rst b/doc/guides/sample_app_ug/vm_power_management.rst index 1ad4f1490..5be9f24d5 100644 --- a/doc/guides/sample_app_ug/vm_power_management.rst +++ b/doc/guides/sample_app_ug/vm_power_management.rst @@ -657,6 +657,31 @@ To build just the ``guest_vm_power_manager`` application using ``make``: The resulting binary will be ${RTE_SDK}/build/examples/guest_cli +.. Note:: + This sample application conditionally links in the Jansson JSON + library, so if you are using a multilib or cross compile environment you + may need to set the ``PKG_CONFIG_LIBDIR`` environmental variable to point to + the relevant pkgconfig folder so that the correct library is linked in. + + For example, if you are building for a 32-bit target, you could find the + correct directory using the following ``find`` command: + + .. code-block:: console + + # find /usr -type d -name pkgconfig + /usr/lib/i386-linux-gnu/pkgconfig + /usr/lib/x86_64-linux-gnu/pkgconfig + + Then use: + + .. code-block:: console + + export PKG_CONFIG_LIBDIR=/usr/lib/i386-linux-gnu/pkgconfig + + You then use the make command as normal, which should find the 32-bit + version of the library, if it installed. If not, the application will + be built without the JSON interface functionality. + To build just the ``vm_power_manager`` application using ``meson/ninja``: .. code-block:: console