Richard Purdie 7bbeddeee1 bitbake: bin/bitbake-getvar: Add a new command to query a variable value (with history)
We've talked about having this for long enough. Add a command which queries a single
variable value with history. This saves "bitbake -e | grep" and avoids the
various pitfalls that has.

It also provides a neat example of using tinfoil to make such a query.

Parameters to limit the output to just the value, to limit to a variable flag
and to not expand the output are provided.

[YOCTO #10748]

(Bitbake rev: 4c1881b620e885f55d7772f8626b8a76c2828333)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-05-06 11:08:08 +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.
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