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Welcome to the Yocto Project Development Manual! This manual provides information on how to use the Yocto Project to develop embedded Linux images and user-space applications that run on targeted devices. The manual provides an overview of image, kernel, and user-space application development using the Yocto Project. Because much of the information in this manual is general, it contains many references to other sources where you can find more detail. For example, you can find detailed information on Git, repositories, and open source in general in many places on the Internet. Another example specific to the Yocto Project is how to quickly set up your host development system and build an image, which you find in the Yocto Project Quick Start. The Yocto Project Development Manual does, however, provide guidance and examples on how to change the kernel source code, reconfigure the kernel, and develop an application using devtool. By default, using the Yocto Project creates a Poky distribution. However, you can create your own distribution by providing key Metadata. A good example is Angstrom, which has had a distribution based on the Yocto Project since its inception. Other examples include commercial distributions like Wind River Linux, Mentor Embedded Linux, ENEA Linux and others. See the "Creating Your Own Distribution" section for more information.

The following list describes what you can get from this manual: Information that lets you get set up to develop using the Yocto Project. Information to help developers who are new to the open source environment and to the distributed revision control system Git, which the Yocto Project uses. An understanding of common end-to-end development models and tasks. Information about common development tasks generally used during image development for embedded devices. Information on using the Yocto Project integration of the QuickEMUlator (QEMU), which lets you simulate running on hardware an image you have built using the OpenEmbedded build system. Many references to other sources of related information.

This manual will not give you the following: Step-by-step instructions when those instructions exist in other Yocto Project documentation: For example, the Yocto Project Software Development Kit (SDK) Developer's Guide manual contains detailed instructions on how to install an SDK, which is used to develop applications for target hardware. Reference material: This type of material resides in an appropriate reference manual. For example, system variables are documented in the Yocto Project Reference Manual. Detailed public information that is not specific to the Yocto Project: For example, exhaustive information on how to use Git is covered better through the Internet than in this manual.

Because this manual presents information for many different topics, supplemental information is recommended for full comprehension. See the "Links and Related Documentation" section in the Yocto Project Reference Manual for helpful sources.