Build Tools

Tools for compiling Unreal Engine and game projects.

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Unreal Build System

There are a collection of tools for automating the process of building Unreal Engine 4 (UE4), including UnrealBuildTool and UnrealHeaderTool (among others), and this guide provides an overview of these build tools, including a brief overview of UE4's modular architecture. 

Note: If you would like to debug UnrealBuildTool or AutomationTool on Mac OS X, please install MonoDevelop 4.2.2 and Mono 3.2.7.


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Welcome to the new Unreal Engine 4 Documentation site!

We're working on lots of new features including a feedback system so you can tell us how we are doing. It's not quite ready for use in the wild yet, so head over to the Documentation Feedback forum to tell us about this page or call out any issues you are encountering in the meantime.

We'll be sure to let you know when the new system is up and running.

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