Unreal Engine 5 Documentation has been moved to the Epic Developer Community

Build Tools

Tools to compile 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, including UnrealBuildTool and UnrealHeaderTool (among others), and this guide provides an overview of these build tools, including a brief overview of Unreal Engine'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 .

Topics

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UnrealBuildTool

UnrealBuildTool (UBT) manages the process of building UE4 source code across a variety of build configurations.

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UnrealHeaderTool

UnrealHeaderTool (UHT) is a custom parsing and code-generation tool supporting the UObject system.

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AutomationTool

AutomationTool is a generic system used to automate processes, including testing and building games.

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