D012 - The build directory is overridable, and has to be

assumed · 2026-08-19

make BUILD=/tmp/obs.

Development happens on Windows with the repository mounted into a Linux VM. That mount cannot carry the execute bit, so a binary built into the tree is built and then cannot be run. Building to a VM-local path is the fix, and it needs to be a documented knob rather than folklore rediscovered every session.