[yocto] Building Custom Python 3 Packages

[Alexander Kanavin]

On 08/31/2017 04:54 PM, Seilis, Aaron wrote:
> This clearly indicates that the issue is that the build is looking
> for setup.py in the ${B} location, but it is only present in the ${S}
> location when `devtool modify` has been run. I have tried setting
> ${B} to ${S} explicitly in the recipe, but this doesn't result in
> ${B} being changed when I run `bitbake -e mytool`. I could always
> copy ${S} to ${B} in the recipe, but that seems a bit hack-ish.
> 
> Did I miss something or is there another way that Python builds are
> intended to work?

I think this might be a limitation of setuptools: they do not support 
out-of-tree builds (which is a must for devtool modify'). If you can 
figure out how to solve it, that would be nice!

Alex