Guillaume Champagne 8f7d34d135 image-live.bbclass: optional depends when ROOTFS empty
`ROOTFS` is optional. It can be empty if the live image doesn't require
a rootfs.  In such cases, the build doesn't depend on
`do_image_{LIVE_ROOTFS_TYPE}`.

(From OE-Core rev: f1dda70ff8b672b695b44079db69a0563bb6c96c)

Signed-off-by: Guillaume Champagne <champagne.guillaume.c@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 96f47c39f1d17f073243913d524bde84add41d8f)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-04-23 10:41:15 +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
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