Preparations for Building Your Own OpenBSD
Building OpenBSD takes up about 4GB of disk, 2GB in /usr/src and 2GB in /usr/obj. OpenBSD creates these directories as separate partitions by default, but if you designed your own disk-partition scheme, make sure you have enough space.
You must build on your target platform. Don’t try to cross-compile by, for example, building VAX binaries on an amd64 box. OpenBSD developers use cross-compiling to bring up a new hardware platform, but once the platform is up and running, all development happens on the native hardware. Code produced by cross-compiling might not be identical to code produced by the compiler running on the native platform.
Preparing the Base Operating System
Your first step is to prepare ...
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