Ue Module Build System

This is your go-to when you're wrestling with Build.cs configuration, creating new modules or plugins, or debugging linker and include errors in Unreal Engine. It covers the full build system stack: ModuleRules, TargetRules, the .uproject manifest, and UE5's IWYU include discipline. The guidance on public versus private dependencies is solid and will save you from bloating compile times. It also breaks down the API export macros, PCH settings, module types, and loading phases with actual code samples. If you've ever stared at an "unresolved external symbol" error or wondered why your includes are breaking after enabling IWYU, this will get you unstuck fast.

skills.sh installs: 1.4K
GitHub stars: 446
last updated: Aug 21, 2026

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Install

$ npx -y skills add quodsoler/unreal-engine-skills --skill ue-module-build-system --agent claude-code

Installs into .claude/skills of the current project.

Files

UE Module & Build System

Target engine: UE 5.8. APIs below are verified against the 5.8 headers and UnrealBuildTool sources; older forms are listed under "Deprecated — do not use".

This skill covers UnrealBuildTool (UBT) ModuleRules (*.Build.cs) and TargetRules (*.Target.cs), the .uproject and .uplugin descriptors, module registration (IModuleInterface and IMPLEMENT_MODULE in Modules/ModuleManager.h, module Core), plugin discovery (IPluginManager in Interfaces/IPluginManager.h, module Projects), and the compiler, linker, UHT and UBT errors those files cause.