[PATCH] D79400: [CMAKE] Fix build failure when source directory is read only

[Volodymyr Sapsai via Phabricator via llvm-commits]

vsapsai added a comment.

Seems like this change causes `ninja clean` to fail with the error

> ninja: error: remove(include/llvm/Support): Directory not empty

Full repro steps are

  <cmake configuration>
  ninja install
  ninja clean

Simpler steps are

  <cmake configuration>
  ninja include/llvm/Support/all
  ninja clean


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D79400/new/

https://reviews.llvm.org/D79400