是否可以在不构建整个核心的情况下进行层烤制？

Question

Suppose I create a new layer meta-example with a recipe whose provider is example that has no dependencies with core (layer meta ). Suppose the do_build task is just an echo. You can replicate this scenario issuing these commands:

bitbake-layers create-layer meta-examaple
bitbake-layers add-layer meta-example

Is there a way to execute bitbake example without having to build the entire core?

I tried to set LAYERDEPENDS_meta-example = "" (previously it was set to core) but in vain. I would have expected the echo command to be executed without the entire core build process.

I cannot manage to find where Yocto is programmed to build the core before any other layer. Where can I find this piece of code?

Thanks.

Answer 1

At no point is "the entire core" built unless you bitbake world or universe . Building a recipe will build gcc, binutils, glibc and so on, but that's not all of oe-core.