bif-c is an attempt to implement a (near) fig-forth interpreter and run-time environment in portable C. It gets close, in that it compiles and almost runs pretty much anywhere the gnu compiler toolchain compiles and runs.
It is, however, still in suspended development, with many bugs remaining. VERY BUGGY! It may be of interest to those wanting a high-level understanding of the low-level of FORTH. For other purposes, you may be better served with one of the functioning implementations of Forth.
There are a number of extant bugs. Somewhere along the line it quit loading and compiling screens. At this point, it's not really useful as anything but ways to get the current GNU compiler team to punt the code wherever.
[Using C to extend the language.]
Many thanks to sourceforge.net and SourceForge.JP for hosting bif-c.
Wiki: Getting started.
Wiki: More details on compiling.
Wiki: Using C to extend the language.