Help request for potentially new host dependencies

Sebastian Huber sebastian.huber at
Tue Oct 8 16:31:33 UTC 2019

----- Am 8. Okt 2019 um 4:04 schrieb Jonathan Brandmeyer jbrandmeyer at

> On Mon, Oct 7, 2019 at 12:32 AM Sebastian Huber
> <sebastian.huber at> wrote:
>> Hello,
>> I need your help to figure out if some host tools which I would like to
>> use for the RTEMS BSP build and development are widely supported on the
>> host platforms of all RTEMS users.
>> The current build system is based on Autoconf and Automake. I would like
>> to replace it with a Python based build system (waf) which is aimed to
>> be faster and easier to maintain.
> Do you need to do anything special to get waf to use all of the build
> machine's resources?  Waf was only capable of keeping about ~30% of a
> 16-core/32-thread workstation's resources busy during the rtems-libbsd
> build at any time, even during the embarrassingly parallel stages of
> the build.

Yes, I noticed this too in the libbsd build. I had no time to figure out why it is not able to keep all processors fully loaded.

>> ... On a
>> Linux distribution they should be available via the package manager. You
>> can install them via pip, e.g.
>> pip install pyyaml
>> pip install ruamel.yaml
> If you have a stack of python dependencies to manage, consider using
> pipenv instead of pip.  Pipenv combines pip with virtualenv in such a
> way that different Python dependency sets don't conflict with each
> other on the user's system.  In particular, the python virtualenv that
> I need to build and test RTEMS will be completely independent of the
> virtualenv that I need for my own project's dependencies.

Thanks, I will keep this in mind when I update the user manual.

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