Richard Purdie 5dad70fedb bitbake: build: Catch and error upon circular task references
If there are circular task references, error on them rather than show
a recursion error. A simple reproducer is:

"""
do_packageswu () {
       :
}

addtask do_packageswu after do_image_complete before do_image_qa
"""

into image_types.bbclass. There is code in runqueue to detect these but
we never get that far with the current codebase.

[YOCTO #13140]

(Bitbake rev: 4d83d9103d9225a2ac42c0f3dfada2f5cf140b68)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 339d4d6be515a71311b81fb9e99742af0d8a5130)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-09-16 22:17:48 +01:00

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.
Description
No description provided
Readme 249 MiB