[ELDK] complete sources for ELDK target images

[Matthias Fuchs]

Hi,

what's the best way to collect all sourcecode and licenses that are
involved in an ELDK/yocto based target image? So that these files can be
used to provide the complete sourcecode for a given target (in order to
fulfill license demands)

One method could be to provide the ELDK git repository and the download
directory that is created during the build process. But this contains
more sources than are required to build a special target image (also
contains toolchain and other images releated files).

The installed_pkgs.txt file only lists the package names and not the
sources itself.

I expect this to be a common task when creating yocto based products.
But I did not find the best way so far.

Matthias