Re: [ptxdist] PTXdist usescases

["Baeuerle, Florian" <Florian.Baeuerle@allegion.com>]

Am Donnerstag, den 30.08.2018, 11:41 +0200 schrieb Michael Olbrich:
> > > > Let's say I want to build App D on two platforms, each requiring different
> > > > graphic drivers (SGX is a nightmare), I wouldn't really know how to do that
> > > > properly.
> > > 
> > > Hmm, we have something like this already: The 'platform-opengl' package
> > > defaults to Mesa, but you can a platform specific rule in each platform. I
> > > used this in the past for Mesa vs. Vivante.
> > 
> > That would, however, only work if it would be one package?
> > For am335x with gpu, I need three packages: the OOT kernel module, a franken-patched
> > libgbm and the blobs (libEGL, GLES, libpvr*, etc.).
> > 
> > When i override platform-opengl through configs/platform-a, then these three packages'
> > symbols would end up in my ptxconfig, so my ptxconfig is more or less tied to my platform.
> 
> Add platform-opengl and the extra packages to the platformconfig and add
> the dependencies there. If platform-opengl is enabled in both configs, then
> any dependencies will be handled correctly.
> 

I added the three packages to

$platform_a/platforms

and an override for platform-opengl, selecting the three packages in

$platform_a/rules/platform-opengl.in

as a result, I have the three symbols in my ptxconfig, which I do not want.

If i add it in $platform_a/platforms/platform-opengl.in with the project_version
section, defaulting to y, "ptxdist menuconfig platform" spits out a bunch of
errors due to references to undefined symbols (the dependencies of the three
packages).

What I'd like is:

ptxconfig + platform a -> installs ti-sgx-drivers
ptxconfig + platform b -> installs other platform-dependent driver

That would mean some sort of dependency resolving that happens at some later
point. If I understand correctly, that happens during menuconfig, resulting in
a {ptx,platform}config.

I think I am missing something. Googling, trial and error and the commit logs
did not get my anywhere. Further help greatly appreciated, I'm volunteering to
write documentation on this, if desired.


Florian
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