From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Hunt Subject: [PATCH v2] doc/power: add info on jansson conditional build Date: Fri, 16 Nov 2018 15:47:21 +0000 Message-ID: <20181116154721.56245-1-david.hunt@intel.com> References: <20181101165549.17497-1-david.hunt@intel.com> Cc: john.mcnamara@intel.com, thomas@monjalon.net, marko.kovacevic@intel.com, David Hunt To: dev@dpdk.org Return-path: 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) In-Reply-To: <20181101165549.17497-1-david.hunt@intel.com> 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 --- 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 -- 2.17.1