The XDAndroid Project is no longer active.
This site provides archived information from while the project was under development. Some links may no longer function.
Build Configuration
With the XDAndroid source checked out, the build system must be configured to build an XDAndroid product for one of the supported targets. Build system configuration is done via a single file in the root of the XDAndroid source tree whose name is <tt>buildspec.mk</tt>. The following configuration documentation applies to <tt>froyo</tt> and later branches.
<div class="warning">NOTE For build configuration options for the <tt>eclair</tt> branch, please see Eclair Build Configuration.</div>
The Android build system will use <tt>buildspec.mk</tt> to pass a variety of variables to the <tt>make</tt> program which parses all of the Makefile recipes that comprise the build system. Most of the variables supported by <tt>buildspec.mk</tt> are self-explanatory, especially after becoming familiar with the basics of an Android system.
Build System Configuration
Simply create a blank plain-text file in the root of your XDAndroid source tree. Name the file <tt>buildspec.mk</tt> and edit it with your preferred text editor.
Variables are each defined on their own single line. Similar to other configuration files, anything which proceeds a pound sign (#) is ignored as a comment.
To instruct the build system to generate an XDAndroid system image, the following variables must be defined in <tt>buildspec.mk</tt>...
<syntaxhighlight lang="make"># Configure for an XDAndroid release engineering target. TARGET_PRODUCT := full_msm TARGET_BUILD_VARIANT := eng TARGET_BUILD_TYPE := release TARGET_USERIMAGES_USE_EXT2 := true</syntaxhighlight>
The final line in the above example, which enables <tt>TARGET_USERIMAGES_USE_EXT2</tt>, will have the Android build system generate ext2 filesystems. On the live device, these filesystems are mounted writable. The XDAndroid boot process supports an ext2-based system partition image, named <tt>system.ext2</tt> on the SD card. This is highly recommended.
After completing the build configuration and saving the <tt>buildspec.mk</tt> file, you can proceed with Building and Packaging the system.
