Reducing V8 binary size in JIT-less mode

[Darin Dimitrov]

According to https://v8.dev/blog/jitless, starting from 7.4, V8 supports JIT-less mode making it suitable for restricted environments.

My goal is to reduce the binary size by stripping the optimizing compiler code which is not needed when running in this mode.

Is any configuration flag which will compile V8 in this lightweight mode?

Right now I am getting both "v8_base_without_compiler" and "v8_compiler" but I was not able to link my application without the "v8_compiler" module.

[Jakob Gruber]

Hi Darin,

On Mon, Jul 1, 2019 at 2:22 PM Darin Dimitrov <darin.d...@gmail.com> wrote:

According to https://v8.dev/blog/jitless, starting from 7.4, V8 supports JIT-less mode making it suitable for restricted environments.

My goal is to reduce the binary size by stripping the optimizing compiler code which is not needed when running in this mode.

Is any configuration flag which will compile V8 in this lightweight mode?

Unfortunately, right now there is no easy way to conditionally compile out components (e.g.: TurboFan, wasm, the debugger, etc.). It's certainly possible to add support though and I see how it could be interesting for embedders. 

I don't think we have concrete plans for this at the moment, but would welcome contributions.

 

Right now I am getting both "v8_base_without_compiler" and "v8_compiler" but I was not able to link my application without the "v8_compiler" module.

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