Folks - I just recently (last night) did a darcs get of the yhc-devel source and tried to build it on a FreeBSD system. I ran into a couple of small problems, easily solved. It should be easy to tweak the config/make setup to work with BSD systems, which put "external" libraries (like gmp) in /usr/local. The issue is that autoconf+configure and gcc aren't looking in /usr/local/{include,lib} for the libgmp stuff (gmp.h and the libraries). I have gmp 4.1.4 installed - probably because I installed GHC - so I was surprised that libgmp wasn't being discovered. I couldn't figure out - in the time that my patience allowed - how to make autoconf do the right thing so I simply commented out the configure checks (which were bombing out and claiming I didn't have a gmp library) and added -I/usr/local/include to CFLAGS and -L/usr/local/lib to LDFLAGS (in yhc-devel/src/runtime/BCKernel/Makefile), and added "-lgmp" to LIBS in the toplevel Makefile.inc. I was able to build everything (using "gmake" - what GNU make is called on BSD systems), and ran "gmake tests" and got 51/51 passes. Hope this helps, - David -- Life's better on two wheels. http://nimblemachines.com/browse?name=cycl