From The Free On-line Dictionary of Computing: (http://www.foldoc.org/, Editor Denis Howe)
A compiler for {K&R C} plus prototypes and other ANSI C features by Matthew Brandt, Christoph van Wuellen, Keith and Dave Walker. c386 is targetted to several 68000 and Intel 80386assemblers, including gas. floating-point support is by inline code or emulation. It can produce lots of warnings and generates better code than ACK.