How to build UE 4.26 from source on a Mac Big Sur Beta 20A5384c

I checked out 4.26 branch, generated project files, opened XCode 12.0.1 (Release)

File:
PBDCollisionConstraintsContact.cpp

Line: 1346
if (FRigidBodyPointContactConstraint* PointConstraint = Constraint.As())

Error:
Use ‘template’ keyword to treat ‘As’ as a dependent template name

So it’s impossible to build UE4 4.26 on a mac for me. How to fix it?

OS: macOS Big Sur Beta 9,
Hardware: MBP 16" 2019

I would Honestly not use Big Sur yet. As a Unreal Mac Developer, There are some unresolved Xcode error that hasn’t been fixed with Catalina.

I still couldn’t compile UE 4.26 :slight_smile:

Let’s see. Maybe after release (it should be soon)