WebCore is a framework for Mac OS X that takes the cross-platform KHTML library (part of the KDE project) and combines it with an adapter library specific to WebCore called KWQ that makes it work with Mac OS X technologies. KHTML is written in C++ and KWQ is written in Objective C++, but WebCore presents an Objective C programming interface. WebCore requires the JavaScriptCore framework. This version of WebCore is based on the KHTML library from KDE 3.0.2. Changes that are specific to WebCore are marked with #if APPLE_CHANGES. Other changes to improve performance and web page compatibility are intended for integration into future versions of the KHTML library. In order to use the WebCore and JavaScriptCore projects together you will need to set both projects to use the same build products directory. The JavaScriptCore README has detailed instructions about how to set this up. After JavaScriptCore is built, you can build WebCore using the Project Builder interface or the "pbxbuild" command from the command line.