Well, I'm now on day two of my Hot-Babe build. What is Hot-Babe?
Hot-Babe is a System Load Monitor for Unix. I'm currently building it on my NetBSD equipped LC III, and I'm ever so slowly creeping toward completion.
I'm going to attempt a build on my Quadra 700 too. I'm curious to see how much faster the Quadra 700 will accomplish the same task. I'm guessing that the Q700 could shave as much as a day from the build time.
It's all the dependencies, see. Yep, I can hardly wait to set my sights on a build with mucho grande sources and dependencies. 
The difference between my IIci building a kernel for NetBSD 1.4.x with 8mb RAM and my Q700 with 20MB RAM was nothing short of amazing. I don't recall the actual speed difference, and I don't recall if the IIci swapped much because of the RAM, but it was a heck of a difference for the same clock speed, but a better CPU.
I have NetBSD running on three machines right now: 7300/200, Q700, and LCIII.
I've pretty much given up on running anything on the LCIII, because it's just too darn slow. I think I'll just use it as an X server for my 7300/200. (I'm actually typing this message in Mozilla, which is running on my 7300/200 through an X client to my beige G3). My PM7300 is also busy building the xfce desktop environment. My LCIII is also connected to the 7300 as an Xserver and is currently running top in an xterm window.
My Q700 is also busy building the xfce desktop environment at the moment.
Oh yeah, I'm using MI/X as an X server on my beige G3, because it is not currently running any unix. It's kind of cool!
NetBSD supposedly has one of the best cross-build systems around. You can configure either the Q700, 7300, or even a PC to build anything you want for the LCIII. I've not done it for general programs, but I used to build custom 030 kernels for my IIci and IIsi on my Q700 under NetBSD. There should be decent docs for setting up a cross-build setup. At the least it should be somewhat easy to just compile a package on the Q700 without 040-specifice optimizations and use that to install with pkg-add on the LCIII.
I was really considering cross compiles for my 68k machines, but I have the time available to let the 68k machines do their own builds. Besides, there's a certain level of satisfaction achieved from being able to say, "Yeah, I compiled that on my LCIII. It only took three days. I'm impressed!"
Know what I mean?
Has any of you guys build Hot Babe on OS X? I've tried af couple of times and it was build succesfully, but when you run it, it exits with a bus error or something like that.
I dunno about OS X, but I've successfully built and run Hot-Babe on a NetBSD machine. Trust me, you're not missing out on much.