SqueakFFIPrims is not being built as part of dev-lang/squeak-3.7.7, even though there I have libffi installed. Note this in the config output: checking for FFI support... requires libffi checking ffi.h usability... yes checking ffi.h presence... yes checking for ffi.h... yes checking for ffi_call in -lffi... no ******** disabling SqueakFFIPrims
Hello Simon, I just commited a new ebuild to the tree fixing this problem. Thanks!