bitbake: build: implement custom progress handlers injected via OE_EXTRA_IMPORTS

A separate patch to base.bbclass (in poky) will add the OE_EXTRA_IMPORTS
variable. The contents are appended into OE_IMPORTS. This provides a
mechanism by which layers (in their layer.conf) can make custom progress
handlers available.

As a backup, individual recipes can inject progress handlers into
__builtins__.

Custom handlers are expected to have this __init__ signature:

    def __init__(self, d, outfile=None, otherargs=None):

Recipes can then use the handlers like this:

    do_task[progress] = "custom:mylayer.util.ProgressHandler[:args]"

The last part (everything after and including the second colon) is
optional. If provided, it is passed to HandlerClass's __init__ as
otherargs="args". Otherwise, otherargs=None.

(Bitbake rev: 20289d62c84c393990dd3deb0cca1b17c09092e6)

Signed-off-by: Chris Laplante <chris.laplante@agilent.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions