Why is not llvm-config executable included?

[Palle Girgensohn]

Hi!

I try to build postgresql with llvm from base in 13.0-CURRENT, but although it seems to me that llvm is indeed included in base, the executable `llvm-config` is not. PostgreSQL's build process expects to be able to use this to configure itself when building with llvm.

Any ideas how to deal with this, apart from installing devel/llbm90 which seems a bit bonkers?

Palle