build: bootstrap SwiftPM with forked and not host clang#64629

Merged

al45tair merged 1 commit intoswiftlang:mainfrom

finagolfin:spm-cc

Jul 12, 2023

Commits on Mar 26, 2023

[build] Make sure SPM is built with the forked clang, not the host clang
finagolfin
committed