D has crazy good and easy C interoperability. There is a near 1-1 mapping of types. C interop was a major design goal. Dstep, which uses llvm/clang as a libra

D has crazy good and easy C interoperability. There is a near 1-1 mapping of types. C interop was a major design goal. Dstep, which uses llvm/clang as a library, can translate headers for you. dpp I believe automagically at compile time translates C++/C headers.