LibClang is a Haskell FFI binding to libclang.
You'll need ncurses and a C++ compiler installed to build LibClang. On Ubuntu you can run sudo apt-get install build-essential ncurses-dev g++ to get everything you need. On OS X it's enough to install XCode and then run xcode-select --install.
(c) Chetan Taralekar 2010, 2011
(c) Seth Fowler 2013, 2014