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UnrealEngineUWP/Engine/Documentation/Source/Programming/BuildTools/UnrealHeaderTool/UnrealHeaderTool.INT.udn
Max Chen 4561801a81 Merging //UE4/Dev-Main to Dev-Editor (//UE4/Dev-Editor) @7119039
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[CL 7120528 by Max Chen in Dev-Editor branch]
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Availability: Public
Title: UnrealHeaderTool
Description: UnrealHeaderTool (UHT) is a custom parsing and code-generation tool supporting the UObject system.
Type: landing
Parent: Programming/BuildTools
Order: 1
**UnrealHeaderTool (UHT)** is a custom parsing and code-generation tool that supports the UObject system. Code compilation happens in two phases:
1. UHT is invoked, which parses the C++ headers for Unreal-related class metadata and generates custom code to implement the various UObject-related features.
1. The normal C++ compiler is invoked to compile the results.
When compiling, it is possible for either tool to emit errors, so be sure to look carefully.