[OE-core] Building older releases on modern distros (and vice versa)

[akuster808]

I would like to thank you and Intel for taking up this task even thought
the community seemed to have issues with Centos7 being dropped.

Is there anything community can do at this point?

- armin

On 1/17/20 9:59 AM, Richard Purdie wrote:
> We've been discussing how we could: 
>
> a) build old releases on newer distros
>
> as well as 
>
> b) how we could build new releases on old distros.
>
> Our proposed answer has been "buildtools-extended-tarball" which
> includes nativesdk-gcc.
>
> We need b) so we can install this on Centos7 and stop having to work
> around its really old compiler. In general this should improve our
> ability to support stable branches in general.
>
> I wanted to stress test a) a bit, partly to prove that b) could work
> longer term.
>
> I did this by attempting to build buildtools-extended-tarball on pyro
> which has a gcc v6 and then using that to build morty on an Ubuntu
> 18.04 system.
>
> It wasn't plain sailing, I had to:
>
> * Upgrade the uninative in pyro
> * Switch to xz uninative to allow latest uninative to work
> * Patch binutils to fix an ld.so.conf relocation issue
> * Add an ld.so.conf to buildtools
> * Add the buildtools-extended-tarall recipe
>
> Patches are in:
>
> http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=rpurdie/pyro
>
> (some need forward porting to master)
>
> Having got the output from the pyro build, in the morty build I added
> buildtools tarball to PATH before running the build. I had to disable
> uninative since it was going to get in the way and conflict:
>
> $ x86_64-buildtools-extended-nativesdk-standalone-2.3.4.sh 
>
> Extended Build tools installer version 2.3.4
> ============================================
> Enter target directory for SDK (default: /opt/poky/2.3.4): ./buildtools
> You are about to install the SDK to "/media/build1/poky-morty/buildtools". Proceed[Y/n]? 
> Extracting SDK...............done
> Setting it up...done
> SDK has been successfully set up and is ready to be used.
> Each time you wish to use the SDK in a new shell session, you need to source the environment setup script e.g.
>  $ . /media/build1/poky-morty/buildtools/environment-setup-x86_64-pokysdk-linux
>
>
> $ .  /media/build1/poky-morty/buildtools/environment-setup-x86_64-pokysdk-linux
> $ source oe-init-build-env
> $ mkdir classes
> $ touch classes/uninative.bbclas
> $ bitbake bash
>
>
>
>
>
>