Using sn-bindgen 0.1.x with LLVM < 17 causes arcane clang errors

[keynmol]

See

indoorvivants/scala-native-gtk-bindings#13 (comment)

We should find out whether it's possible to detect clang version early (from ClangInfo?) and fail the run with a helpful message

[sideeffffect]

Hmm, so with LLVM_BIN=/usr/lib/llvm-17/bin, bindgenGenerateScalaSources now fails with

Successfully regenerated binding (Scala) for cairo, 0
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
Successfully regenerated binding (Scala) for harfbuzz, 0
Successfully regenerated binding (Scala) for graphene, 0
Successfully regenerated binding (Scala) for glib, 0
Successfully regenerated binding (Scala) for gobject, 0
Successfully regenerated binding (Scala) for pango, 0
Successfully regenerated binding (Scala) for girepository, 0
Successfully regenerated binding (Scala) for gio, 0
Successfully regenerated binding (Scala) for gdkpixbuf, 0
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Float16, full type: _Float16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
[bindgen] warn Unknown type: Kind: Unexposed, full type: __bf16
Successfully regenerated binding (Scala) for gtk, 0
Successfully regenerated binding (Scala) for adwaita, 0