Chris Laplante f77badd46a 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>
2019-06-11 13:27:19 +01:00
2018-02-24 10:31:45 +00:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
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