How do I build Bun for production

[NoelJacob]

I want to compile Bun from scratch for production without Docker or downloading any previous Bun binary. How to?

It might be okay to download a compiled JSC from the repo but also can you tell how to compile that repo too.

[vjpr]

https://bun.sh/docs/project/developing

[NoelJacob]

I've read it a few times and it doesn't show building for production.

[hasanyasin]

@NoelJacob,

I'm not sure if I understand your question correctly. I assume that you want to build the bun binary from scratch. You'll need zig to compile, then JavaScriptCore and all its dependencies ready on the system.

If you want to follow all the steps yourself, just check how the dev container is built:

https://github.com/oven-sh/bun/blob/main/Dockerfile.devcontainer

There, you'll see all the variables set, all the commands ran to have the binary compiled successfully.

[NoelJacob]

The thing I want to do is this - I have zig, and I want to compile JavaScriptCore for production and then bun for production. How do I do this without a docker?

I am asking this to (try to) create a config/installation file for a few package managers that installs bun.

[hasanyasin]

The linked Dockerfile is what runs to build the container with all the steps. That is your recipe. As you see at the from (FROM ... ubuntu:22.04), it is an Ubuntu system so you can run the exact commands on an Ubuntu, and probably any other Debian-based machine.

A Dockerfile is usually quite easy to convert to a bash script. It's all commands and some env/variable assignments.

[NoelJacob]

I'm looking at the Dockerfiles but is there anyway I can build with running make commands after setting variables. I also want to compile JSC myself because it seems possible with this Makefile. I think now the preferred way to get into development is through make setup.

[jelly8173]

So its not actually possible to build Bun if you does not possess bun binary already, because it is used in build process for code generation:

$ ninja -v
...
[2/382] cd /home/jelly8173/temp/bun && bun run src/codegen/generate-jssink.ts /home/jelly8173/temp/bun/build/codegen

And as you can see, developers does not try to make build scripts compatible with anything except Bun itself, as they use internal bun modules. Right now only for spawning processes and file IO, but that situation will get worse if they don't change this direction.