Some users might want to prefer one babel implementation over another
for various reasons. Having to compile the firmware from scratch can be
quite tedious in that case.
Instead, make the babel implementation switchable at runtime.
The implementation can be switched manually using the uci option
`babelimpl.impl.impl`, which currently is not upgrade-safe.
Signed-off-by: Fabian Bläse <fabian@blaese.de>
To be able to swap out babeld for a different babel implementation in
the future, this splits all fff-specific configuration into a seperate
fff-babel package.
Implementation specific configuration is done in
/lib/functions/fff/babeldaemon, which is included with every selectable
babel implementation. It contains functions, which are called by the
fff-specific code, and therefore allows to configure the implementation
specific parts.
The babel implementation is provided by implementation-specific
fff-packages, which provide 'fff-babel-implementation'. At the moment,
only fff-babeld is supported for use as babel implementation.
Signed-off-by: Fabian Bläse <fabian@blaese.de>
Fabian Bläse