This guide is intended for all Enea Linux developers who want to configure and build customized Linux kernel images for embedded system targets, but also for developers who want to build and run applications in Enea Linux. Always read the README files and the Release Information before this User's Guide. The recommended order of operations for developers are: Receive information from Enea and read the initial documentation online. Update the development host with the needed packages, then download and install Enea Linux. Download and install the Cross-Compilation Toolchain. Start developing your own Enea Linux applications or building your own Enea Linux images. It is assumed that the reader of this User's Guide has a deep knowledge about Linux, how to configure the Linux kernel, and knows how to use the Yocto build system. The variety of information provided in this guide can serve as a quick start introduction to the standards and best practices we share with the Linux community. In this spirit, Enea provides training courses. With this Enea Linux release you have a verified and easy to install board support package for a number of supported hardware types. The board support package includes a set of prebuilt utilities, accessible and setup to rapidly reach your objectives as a developer. In this regard, the support package contains a Linux kernel and root file system, a Software Development Kit (SDK) which includes the cross-compilation toolchain, a variety of tools and scripts for development and customization, and if opted for, a user-friendly Eclipse version with an integrated development environment. The documentation for Enea Linux consists of generic and distribution-specific documents. The generic documents are common for several Enea Linux distributions. The main documents are: Enea Linux Release Information A distribution specific document detailing what the current release contains, including supported features, references to other documentation, known problems and limitations, and Enea support contact information. README files for the distribution Distribution specific documents that serve as an introduction and how-to for this release, where you also find target specific commands and parameters, replacing the generic examples in the User's Guide. These files also point to Build, Boot, and Configuration information details for this distribution. Enea Linux User's Guide The generic manual for developers who build Linux kernels for embedded systems or use prebuilt Linux kernels. Enea Linux Open Source Report The distribution specific list of software packages with corresponding Open Source Licenses, that are included in the Enea Linux distribution. Enea Linux Security Report The release specific document listing the CVEs affecting this distribuition. See also the following generic documentation related to the Yocto project, which actually is based on OpenEmbedded. https://www.yoctoproject.org/documentation/archived - Yocto project documentation. Search for the Yocto version included in your Enea Linux distribution. http://docs.openembedded.org - OpenEmbedded documentation, useful since Yocto is based on OpenEmbedded. https://wiki.yoctoproject.org/wiki - Yocto Wiki, useful information for Yocto users https://wiki.yoctoproject.org/wiki/Ptest - Ptest wiki. Ptest was initiated by Enea, for building, installing and running package test suites http://www.crashcourse.ca/wiki/index.php/Poky_Variable_Glossary - Explanation of some Yocto/Poky variables used in the build configuration files.