Alex Kiernan 8380df6566 rootfs: Make BUILDNAME a weak default in reproducible_build_simple
11e45082ad00 ("rootfs-postcommands.bbclass: improve binary
reproducibility") fixed binary reproducibility of /etc/version, but with
the move to reproducibilty in all builds, setting /etc/version to
anything other than the default fixed timestamp is tricky because
rootfs_reproducible() runs very late.

rootfs.py uses BUILDNAME if set for /etc/version, so introduce a weak
default for BUILDNAME of "REPRODUCIBLE_TIMESTAMP_ROOTFS", when enabling
reproducible builds hence allowing BUILDNAME to be overridden elsewhere.

(From OE-Core rev: bbf28ea9100a4f86b052c5cd53c77f9e1c03fb09)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2020-01-19 23:49:39 +00:00
2020-01-19 13:24:39 +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
Yocto Project reference distribution Poky
https://yoctoproject.org/
Readme 263 MiB