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Bruce Ashfield 7c4802d3a8 systemtap: fix on target build for 4.4 and 5.10+
The following systemtap commit:

    commit 7615cae790c899bc8a82841c75c8ea9c6fa54df3
    Author: Frank Ch. Eigler <fche@redhat.com>
    Date:   Mon Nov 9 19:18:19 2020 -0500

        PR26665: relayfs-on-procfs megapatch

Changes the way that capabilities are checked when compiling
a systemtap probe.

In our cross-build -> on target workflow, this results in a
mismatch between the systemtap configuration capabilities and
the kernel configuration.

The result is a compilation failure since the security
components are protected by two different #ifdef's, and they
can be out of sync. By protecting the include and callsite with
the same #ifdef, we ensure they are in sync and fix our
on target problem.

While this fix is oe-specific, a variant will be proposed
upstream once a deeper analsysis of other options has been
completed.

(From OE-Core rev: 25fa864270efe3ff5699a1bf9ebdf599e96362a5)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2020-12-24 08:21:23 +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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