unreal-build-config

Build Configuration - Unreal Engine 5.7

Build.cs Files

• Defines project module dependencies
• Use PublicDependencyModuleNames for modules used in public headers
• Use PrivateDependencyModuleNames for modules used only in .cpp
• Keep minimal dependencies for faster builds
• Add only what is necessary

Common Modules

• Core, CoreUObject, Engine - Always included (basic)
• InputCore, EnhancedInput - For input
• UMG, Slate, SlateCore - For UI
• GameplayTasks - For async tasks
• AIModule - For AI
• OnlineSubsystem - For online features

Optimized Build.cs Example

public class MyProject2 : ModuleRules
{
    public MyProject2(ReadOnlyTargetRules Target) : base(Target)
    {
        PCHUsage = PCHUsageMode.UseExplicitOrSharedPCHs;

        // Public dependencies (used in headers)
        PublicDependencyModuleNames.AddRange(new string[] {
            "Core",
            "CoreUObject",
            "Engine",
            "InputCore",
            "EnhancedInput"
        });

        // Private dependencies (used only in .cpp)
        PrivateDependencyModuleNames.AddRange(new string[] {
            // Add only what is necessary
        });
    }
}

Target.cs Files

• Defines build configurations for different targets
• MyProject2.Target.cs - Game build
• MyProject2Editor.Target.cs - Editor build
• Use ExtraModuleNames to include custom modules

Best Practices

• ALWAYS regenerate project files after modifying .Build.cs
• Add dependencies only when necessary
• Use PrivateDependencyModuleNames when possible (more efficient)
• Avoid circular dependencies between modules
• Document non-obvious dependencies