From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 15BE35F25 for ; Thu, 1 Nov 2018 17:56:00 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Nov 2018 09:55:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,452,1534834800"; d="scan'208";a="85966375" Received: from silpixa00399952.ir.intel.com (HELO silpixa00399952.ger.corp.intel.com) ([10.237.223.64]) by orsmga007.jf.intel.com with ESMTP; 01 Nov 2018 09:55:52 -0700 From: David Hunt To: dev@dpdk.org Cc: thomas@monjalon.net, david.hunt@intel.com, john.mcnamara@intel.com Date: Thu, 1 Nov 2018 16:55:49 +0000 Message-Id: <20181101165549.17497-1-david.hunt@intel.com> X-Mailer: git-send-email 2.17.1 Subject: [dpdk-dev] [PATCH] 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: , X-List-Received-Date: Thu, 01 Nov 2018 16:56:05 -0000 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 --- .../sample_app_ug/vm_power_management.rst | 24 +++++++++++++++++++ 1 file changed, 24 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..b5280d727 100644 --- a/doc/guides/sample_app_ug/vm_power_management.rst +++ b/doc/guides/sample_app_ug/vm_power_management.rst @@ -657,6 +657,30 @@ 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 -- 2.17.1