[clang] [InstallAPI] Hookup Input files & basic ASTVisitor (PR #82552)

[Cyndy Ishida via cfe-commits]

cyndyishida wrote:

> Since clangFrontend depends on clangInstallAPI,

Thanks for reporting this issue. Is it possible the issue is from a stale build? `clangFrontend` should no longer depend on `clangInstallAPI`.  That dependency was removed in https://github.com/llvm/llvm-project/commit/0a518db99e0cffcdbb4cae73e27da87edbb25170#diff-9606e9f9f8eb1bb317db32ba8ee0a8f436389ed68cea0051646a1267c772cd6cL58 

https://github.com/llvm/llvm-project/pull/82552