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mirror of https://git.yoctoproject.org/poky synced 2026-06-02 13:29:49 +00:00
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.
S
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