RawSpeed/development looks very unstable. For example, Nikon small-NEF support is definitely broken; multi-sample DNG support (Fuji SuperCCD dngs) is not compatible with LibRaw in data layout and many other things looks strange (e.g. 'unprocessed raw' concept without tone curve).
So, to use development RawSpeed with LibRaw it needs heavy make-up.
RawSpeed/development looks very unstable. For example, Nikon small-NEF support is definitely broken; multi-sample DNG support (Fuji SuperCCD dngs) is not compatible with LibRaw in data layout and many other things looks strange (e.g. 'unprocessed raw' concept without tone curve).
So, to use development RawSpeed with LibRaw it needs heavy make-up.