Richard Purdie 97b0e371fa selftest/reproducible: Add ability to pull some objects from sstate
When debugging why a single recipe doesn't reproduce, its a pain
to wait for the world to rebuild from scratch. Update the selftest
to allow this to be configured, for example you could set
targets as ['perf'] and sstate_targets as ['virtual/kernel']
and then it should only be rebuilding perf in the test rather than
things like the toolchain (parts of the kernel may be unavoiable
as they're not in sstate).

Can be run as:

OEQA_DEBUGGING_SAVED_OUTPUT=/tmp/perf-diffoscope oe-selftest -r reproducible.ReproducibleTests.test_reproducible_builds

to save diffoscope output.

(From OE-Core rev: 8b38cd1b36f3e227a63c0aa3955f3f5ab172c509)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 132a17d02f29711572e14a2f38a841323fbb6df6)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-03-18 21:20:24 +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.
Description
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