Actually I was talking about how to bundle C code with a Common Lisp library (or system), so that ASDF could also handle building it.

Guile has a C API in libguile, so you can create C that's directly callable from Scheme with little overhead. You can write Scheme procedures in C and you don't need to gobthrough FFI.

As far as I know both languages have FFI. CL has CFFI, Guile has it in its standard library.

But can I actually ship some C code with my CL system and have ASDF take care of building it? If I want to ship CL bindings for a C library, as far as I've understood I need to tell users to install the library first. Maybe something like Clasp offers a C++ API?

Then again in both languages you can always use FFI and if things get hairy you can use grovelling.

With Guile, it's really easy to have a C library and package its guile bindings in the same place. Not saying you can't do this in CL, just that I don't know what it would look like to ship both C and CL in the same package.

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