The currently present 1.6.1.92 version has a problem: it doesn't install quantize_ref.h header file included by quantize.hh which is installed. The latest mjpegtools version has it fixed.
Не хотите ли, Миша, поработать над mjpegtools :)? Неплохо бы сделать libjpeg-mmx разделяемой (как, впрочем, и libmjpegutils) и собрать отдельным пакетом.
fixed