i.MX Yocto项目用户指南

　　1 Overview This document describes how to build an image for an i.MX Freescale board by using a Yocto Project build environment. It describes the Freescale release layer and Freescale-specific usage. The Yocto Project is an open-source collaboration focused on embedded Linux® OS development. For more information regarding Yocto Project， see the Yocto Project page： www.yoctoproject.org/。 There are several documents on the Yocto Project home page that describe in detail how to use the system. The basic Yocto Project， without the Freescale release layer， can be used by following the instructions in the Yocto Project Quick Start found at www.yoctoproject.org/docs/ current/yocto-project-qs/yocto-project-qs.html. The FSL Yocto Project Community BSP （found at freescale.github.io ） is a development community outside Freescale providing support for i.MX boards in the Yocto Project environment. Freescale i.MX joined the Yocto Project community providing a release based on the Yocto Project framework. Information specific to FSL community BSP use can be found on the community web page. This document is an extension of the community BSP documentation. Files used to build an image are stored in layers. Layers contain different types of customizations and come from different sources. Some of the files in a layer are called