The first pre-alpha version is now compiling! It's the start, but it's a good start! I've made all the Makefile.am and configure.ac.
I also have started with the ANSI C grammar suggested by Jeff Lee in 1985. The source of this grammar can be found at ftp://ftp.uu.net/usenet/net.sources/ansi.c.grammar.Z
This version stills useless, but it's a start. :)