Shared library with C API

[Etienne Cimon via digitalmars-d-ldc]

I'm a little new to the LLVM / LDC world, I'm looking forward to 
compiling a library with a C API that could be linked from not only D 
but also C or C++ project (through LLVM as well possibly).

I'm wondering if someone knows if this is something that's currently 
possible.

Thanks!