The bblayer abstraction makes it where multiple layers can be
configured and used at the same time. Some layers make changes to
support a specific machine, and should not have any affect when other
machines are in use.
For linux-yocto, all bsps are created with a user-config.cfg and
user-config.cfg and user-patches.scc. This means that those files
will be pulled from the first location found, which might correspond
to files customized for a different machine.
Instead of using the names user-config.cfg and user-patches.scc, I
propose a machine specific name be used such as
{{=machine}}user-patches.scc and {{=machine}}user-config.cfg. This
would necessitate that all references changed to these new names,
which would affect the yocto-bsp and yocto-kernel scripts.
With this change, it would be possible to have multiple machine BSPs
searched at the same time and to select which to build against by
using a command like MACHINE=qmeux86 bitbake core-image-sato to
override the default.
Note many of the standard BSPs do not seem to suffer this problem as
they do not use the common files user-config.cfg and user-patches.scc
that the yocto-* scripts depend upon.
Additions by Tom Zanussi:
- renamed user-config.cfg to {{=machine}}-user-config.cfg everywhere
- renamed user-patches.scc to {{=machine}}-user-patches.scc everywhere
- added the user-config/patches SRC_URI items to the qemu -rt kernel recipes
- fixed conflicts due to the new open_user_file() helper function
- updated user filename conflicts caused by directory renaming
- updated custom kernel files to match
Fixes [YOCTO #3731]
(From meta-yocto rev: c20bef60aa8d52971fb061d4b8d473ad19c03180)
Signed-off-by: Brian A. Lloyd <brian.lloyd@familyhonor.net>
Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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