UE 4.26 from source build fails [Engine/Source/Runtime/PhysicsCore/Private/PhysicalMaterial.cpp(107): error C2653: 'FChaosEngineInterface': is not a class or namespace name]

anonymous_user_8fe8ffc6 · January 28, 2021, 3:05pm

Pulling Unreal Engine source code from git hub and building gives the following error:

Engine/Source/Runtime/PhysicsCore/Private/PhysicalMaterial.cpp(107): error C2653: 'FChaosEngineInterface': is not a class or namespace name

and more similar ones about Chaos.

anonymous_user_8fe8ffc6 · January 28, 2021, 3:08pm

In Engine\Source\Programs\HeadlessChaos\HeadlessChaos.Target.cs

Add at the end of public HeadlessChaosTarget(TargetInfo Target) : base(Target)

 bUseChaos = true;
 bCompileChaos = true;     
 bCompilePhysX = false;
 bCompileAPEX = false;     
 bCompileNvCloth = false;