somat • 2 days ago

The daves garage youtube has an episode where he documents the pitfalls of compiling 2bsd for a PDP-11/83. https://www.youtube.com/watch?v=IBFeM-sa2YY basically it is an art on a memory constrained system.

What I found entertaining was when he was explaining how to compile the kernel, I went Oh! that's where openbsd gets it from. it is still a very similar process.

1
azinman2 • 2 days ago

What’s the process look like?

1 reply
somat • 1 day ago

On openbsd it's

    cd /sys/arch/$(machine)/conf
    cp GENERIC CUSTOM
    vi CUSTOM    # make your changes
    config CUSTOM
    cd ../compile/CUSTOM
    make
https://www.openbsd.org/faq/faq5.html

I have never done it for 2bsd but according to http://www.vaxman.de/publications/bsd211_inst.pdf

    cd /usr/src/sys/conf
    cp GENERIC CUSTOM
    vi CUSTOM
    ./config CUSTOM
    cd /sys/CUSTOM
    make