LLD is now provided in a separate formula:
brew install lld@19
Using `clang`, `clang++`, etc., requires a CLT installation at `/Library/Developer/CommandLineTools`.
If you don't want to install the CLT, you can write appropriate configuration files pointing to your
SDK at ~/.config/clang.
To use the bundled libunwind please use the following LDFLAGS:
LDFLAGS="-L$HOMEBREW_PREFIX/opt/llvm@19/lib/unwind -lunwind"
To use the bundled libc++ please use the following LDFLAGS:
LDFLAGS="-L$HOMEBREW_PREFIX/opt/llvm@19/lib/c++ -L$HOMEBREW_PREFIX/opt/llvm@19/lib/unwind -lunwind"
NOTE: You probably want to use the libunwind and libc++ provided by macOS unless you know what you're doing.