neon build --target

[dherman]

We need an RFC for cross-compilation flags. The design should try to mirror the UX of Cargo as much as possible.

[cgdusek]

Has there been any progress made on cross-compilation or a manual workaround? Currently looking to build for iOS and Android toolchains from Linux.

[kjvalencik]

The rust side of this is actually pretty easy and works today. Since neon-cli passes on environment variables, cargo will respect the TARGET variable.

Unfortunately, the complexity of cross compiling node-gyp is where this becomes problematic (required by neon-runtime). Due to that complexity, I believe that this is blocked by N-API support which will eliminate node-gyp.

There is no timeline for N-API.

neon-bindings/neon#202
neon-bindings/neon#440

[cgdusek]

http://www.janeasystems.com/blog/support-native-modules-node-js-mobile-apps/ They have a modified node-gyp

[ShinySaana]

Hello,

What is the current status of this feature?
Does it exist any workaround as of today, and if not, is there anything we can do to help?

[kjvalencik]

@ShinySaana It's not being worked on. The legacy backend requires node-gyp which does not easily handle cross compiling.

The good news is that the N-API backend does support cross compiling and only uses cargo to build.

Try npm init neon my-project to create a new N-API project.

[ShinySaana]

As my neon project already used N-API, it was a breeze to migrate to the new backend. I just tested it and it worked wonders. Thank you very much for saving me a lot of headaches !

[JRedOW]

I'm a little confused between the information on the wiki and here. If I create a project today with npm init neon my-project, can I compile for windows, mac, etc. on linux and how?

[kjvalencik]

@JRedOW Additional arguments to cargo can be passed after the npm command. npm run build -- --target ....

Cross compiling documentation for Rust applies equally to Neon. (At the end it's just a Rust shared library)

[JRedOW]

@JRedOW Additional arguments to cargo can be passed after the npm command. npm run build -- --target ....

Cross compiling documentation for Rust applies equally to Neon. (At the end it's just a Rust shared library)

Thanks!

[bergundy]

@JRedOW if you're looking for an example of cross compilation from macs of a neon project you can check out the Temporal Node.js SDK:

https://github.com/temporalio/sdk-node/blob/main/docs/building.md
https://github.com/temporalio/sdk-node/blob/main/.github/workflows/ci.yml#L73