[yocto] Native yocto compile in docker container without cross compile

[Alexander Kanavin]

I think what you are looking for is a Yocto generated SDK for your image?

bitbake -c populate_sdk <image>

Alex

2018-09-18 23:00 GMT+02:00 Fabian Sturm <f at rtfs.org>:
> Hi,
>
> I am wondering, there does not seem to be any information about native
> compile of projects in a Yocto docker container. It seems that most of
> the people use cross compile even though that imho is not necessary if
> your target is x86 too. So here is what I want to do:
>
> - Create a docker container with Yocto Linux, possibly same as the
> target image
> - Install gcc, cmake, autotools etc. in the docker container
> - Run the docker container on a vanilla Ubuntu Linux
> - Run build jobs in this docker container directly
>
> Rational. I have several projects with fully functioning build systems,
> e.g. make, cmake or autotools which I need to compile for different
> platforms, e.g. Windows, Ubuntu Linux and Yocto Linux. I now don't want
> to write recipes just for the Yocto cross compile which I need to
> additionally maintain and I also don't want to make the original build
> systems cross compile aware. This can soon get really hard if the build
> system generates intermediate binaries that are called in the build
> itself and if it is not prepared for this.
> Since my target and host platform are both x86 I do not see the need
> for a cross compile anyways. Usually it is necessary since the target
> platform might be a very slow ARM system that can't handle all the
> builds itself. But I do not have this limitation.
>
> With such a solution my original build systems should still be able to
> run unmodified. Within the docker container the environment would be
> almost the same as in an Ubuntu Linux. The compiler can be accessed
> without any cross compile settings and any intermediate binaries can
> also be directly executed etc.
>
> If there are some fundamental reasons why this is a bad idea, I would
> like to know. I also would appreciate any tips on how to create such a
> docker image. Usually my Yocto image for the target would not contain a
> compiler or make tool. So I need a way to add those after the fact.
>
>
> Thanks a lot!
> Fabian
>
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