In theory, nothing, and that's a good idea that I've considered. My past experience with distributed builds (distcc, icecc) hasn't been that great. They've work

In theory, nothing, and that's a good idea that I've considered. My past experience with distributed builds (distcc, icecc) hasn't been that great. They've worked, but they tended to break down or slow down, and I ended up spending more time maintaining my setup than I gained in compile times. Perhaps things have improved. I still have bad memories of trying to diagnose why the network transfers had slowed to a crawl again (on a local gigabit network.) The other demotivator is noise. I work from home, and the other family members who share my office aren't keen on the sound of a fully spun up build server. I could run ethernet cable under the house to another room, maybe. (Relying on wifi bandwidth hasn't worked out very well. If only debuginfo weren't so enormous...)