CMake Update
Speakers: Cory Fields
Date: September 21, 2023
Tags: Bitcoin core, Build system
Update
Hebasto has a branch he has been PRing into his own repo. Opened a huge CMake PR for Bitcoin core.
Introducing it chunk by chunk on his own repo
QT and GUIX is after that
Next steps
How to get this into Core?
We don’t have something clean. Still have something wonky and how and what to do with autotools.
Ideally introduce CMake for a full cycle. It might still be a little too rough to ship on day 1 of the v27 cycle.
We could deviate from the beginning of the cycle plan. Half way through a release cycle half way through a cycle is better than a crash and burn at the beginning of a cycle.
This is for people’s setups. There is a real possibility that people here wouldn’t be able to work.
Every branch is going to need to rebase, reinstalling stuff, etc. It will be a hit for productivity.
In an IRC meeting. If you think this is weird or just try it out. Try it now or for a month from now, but you are going to have to go through the pain.
If we wait until after branch off, how much of a difference will that be.
If you have 6 weeks, is that not enough time? Ping people and have them try it.
Miners running old operating system, maybe will have the flow downstream. (C++ 11)
It is going to be a painful release.
We now have a split in the build systems, like backporting, now every PR has to rebase.
The goal is after the branch off to merge CMake and delete autotools.
The plan
Ping individual people to test - there is a PR to test. Goal is to have conviction on whether to merge after branch off. Once things gets merged and that you can’t build, it’s on you.