Appendix A Platform-specific features

Whenever a backend doesn't support one of CFFI's features, a specific symbol is pushed onto common-lisp:*features*. The meanings of these symbols follow.

cffi-sys::flat-namespace

This Lisp has a flat namespace for foreign symbols meaning that you won't be able to load two different libraries with homograph functions and successfully differentiate them through the :library option to defcfun, defcvar, etc...

cffi-sys::no-foreign-funcall

The macro foreign-funcall is not available. On such platforms, the only way to call a foreign function is through defcfun. See foreign-funcall, and defcfun.

cffi-sys::no-long-long

The C long long type is not available as a foreign type.

cffi-sys::no-stdcall

This Lisp doesn't support the stdcall calling convention. Note that it only makes sense to support stdcall on (32-bit) x86 platforms.