We fail when executing the Create Symlink to Alt Root Path script with an error similar to: error: expected a symlink at .../System/iOSSupport/System/Library/PrivateFrameworks/WebGPU.framework This is because the ALTERNATE_ROOT_PATH configuration variable isn't properly set for Catalyst builds.
<rdar://90172920>
Created attachment 454503 [details] Patch
Committed r291184 (248343@trunk): <https://commits.webkit.org/248343@trunk>