The bitbake worker/server IPC is asynchronous, but tinfoil only has
functionality to wait for a response on the build_targets() call.
Extract the bulk of the "wait for events and handle errors" logic to a
standalone wait_for wrapper, which is the build_targets code without the
extra_events or event_callback arguments (for now).
Then use this to create a build_file_sync() helper that just wraps the
existing build_file() with @wait_for.
(Bitbake rev: bacd125a9da66cd205f6ba2ab17930b976e82150)
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
c02b7accd5