[yocto] Python module and build_ext args

[Craig McQueen]

I wrote:
> I'm trying to make a recipe for python3-uvloop, using setuptools3.
> 
> The Python 3 uvloop module depends on libuv. It bundles a version of libuv,
> and setup.py tries to build it, but it doesn't work well for cross-compilation.
> However, it also provides a build_ext parameter "--use-system-libuv", which
> seems to work when I try running it manually in devshell. (I have made a
> suitable recipe for libuv and added libuv to DEPENDS.)
> 
> How can I specify the "--use-system-libuv" parameter for build_ext in the
> python3-uvloop recipe? I see a reference to DISTUTILS_BUILD_EXT_ARGS,
> but it doesn't seem to be functional.


I see DISTUTILS_BUILD_EXT_ARGS was submitted in this patch:
https://patchwork.openembedded.org/patch/66071/

However, in the Yocto poky repository, I see commit 0221af0f4ee9e8bfb8796841bdf806e38bc600c6 which appears to be a broken version of the above patch with the separate build_ext step not actually executed with the DISTUTILS_BUILD_EXT_ARGS parameters.

-- 
Craig McQueen