poky: subtree update:9d1b332292..2834c2f853

Alex Stewart (3):
      opkg-utils: upgrade to version 0.4.5
      opkg: upgrade to version 0.4.5
      opkg: add QA check for openssl feed verification

Alexander Kanavin (37):
      virglrenderer: explicitly depend on libgbm
      elfutils: update 0.183 -> 0.185
      libcap: update 2.49 -> 2.50
      perl: split perl-cross into its own recipe
      perl-cross: 1.3.5 -> 1.3.6
      perl: update 5.32.1 -> 5.34.0
      libgcrypt: upgrade 1.9.2 -> 1.9.3
      erofs-utils: correct upstream version check
      m4: correct ptest failures
      ovmf: update 2021.02 -> 2021.05
      apt: update 2.2.3 -> 2.2.4
      util-linux: update 2.36.2 -> 2.37
      cross-canadian: correct the location of pkg-config files
      nettle: update 3.7.2 -> 3.7.3
      glib-2.0: update 2.68.2 -> 2.68.3
      meson: upgrade 0.58.0 -> 0.58.1
      ell: upgrade 0.40 -> 0.41
      erofs-utils: upgrade 1.2.1 -> 1.3
      grub: upgrade 2.04+2.06~rc1 -> 2.06
      gptfdisk: upgrade 1.0.7 -> 1.0.8
      connman: update 1.39 -> 1.40
      libksba: upgrade 1.5.1 -> 1.6.0
      libnss-mdns: upgrade 0.15 -> 0.15.1
      libwpe: upgrade 1.10.0 -> 1.10.1
      puzzles: upgrade to latest revision
      rng-tools: upgrade 6.12 -> 6.13
      stress-ng: upgrade 0.12.09 -> 0.12.10
      python3-magic: upgrade 0.4.23 -> 0.4.24
      sudo: upgrade 1.9.7 -> 1.9.7p1
      wpebackend-fdo: upgrade 1.8.4 -> 1.10.0
      xkeyboard-config: upgrade 2.32 -> 2.33
      bitbake.conf: enable debuginfod in native/nativesdk
      gdb-cross: enable debuginfod
      util-linux: backport a patch to address mkswap hangs
      selftest: do not hardcode /tmp/sdk
      glibc: do not enable memory tagging on aarch64 just yet
      mesa: enable gallium intel drivers when building for x86

Alexandre Belloni (1):
      runqemu: time the copy to tmpfs

Alexey Brodkin (3):
      gcc: Fixes for ARC
      gdb: Add native GDB support for ARC
      gcc: Apply multilib fix to ARC as well

Alistair Francis (3):
      recipes-bsp/opensbi: Disable FW_PIC
      recipes-bsp/u-boot: Allow deploying the u-boot DTB
      recipes-bsp/opensbi: Add support for specifying a device tree

Anders Wallin (1):
      coreutils: remove NOSTAT_LEAF_OPTIMIZATION

Andrea Adami (1):
      kernel.bbclass: fix do_sizecheck() comparison

Andreas Müller (19):
      mesa: upgrade 21.1.1 -> 21.1.2
      systemd: Add more ugly casts to fix build with musl
      alsa-lib: upgrade 1.2.4 -> 1.2.5
      alsa-plugins: upgrade 1.2.2 -> 1.2.5
      alsa-tools: upgrade 1.2.2 -> 1.2.5
      alsa-topology-conf: upgrade 1.2.4 -> 1.2.5
      alsa-ucm-conf: upgrade 1.2.4 -> 1.2.5
      alsa-utils(-scripts): upgrade 1.2.4 -> 1.2.5
      libinput: upgrade 1.17.3 -> 1.18.0
      xf86-input-libinput: upgrade 0.30.0 -> 1.0.1
      epiphany: upgrade 40.1 -> 40.2
      vala: upgrade 0.52.3 -> 0.52.4
      p11-kit: upgrade 0.23.22 -> 0.23.24
      xorgproto: upgrade 2021.4.99.1 -> 2021.4.99.2
      mpg123: 1.27.2 -> 1.28.0
      libx11: upgrade 1.7.1 -> 1.7.2
      libx11: remove CPPFLAGS_FOR_BUILD += "-D_GNU_SOURCE"
      libpcap: upgrade 1.10.0 -> 1.10.1
      mesa: upgrade 21.1.2 -> 21.1.3

Bruce Ashfield (10):
      linux-yocto/5.10: update to v5.10.42
      linux-yocto/5.10: temporarily revert aufs
      linux-yocto-dev: base AUTOREV on specified version
      linux-yocto/5.4: update to v5.4.124
      linux-yocto/5.10: restore aufs
      linux-yocto/5.10: update to v5.10.43
      linux-yocto/5.4: update to v5.4.125
      linux-yocto/5.10: cgroup1: fix leaked context root causing sporadic NULL deref in LTP
      btrfs-tools: include linux/const.h to fix build with 5.12+ headers
      bsps/5.10: update to v5.10.43

Changqing Li (1):
      libjpeg-turbo: fix do_compile error on arm

Chris Laplante (1):
      bitbake: build: warn on setting noexec/nostamp/fakeroot flag to any value besides '1'

Daniel Wagenknecht (5):
      ref-manual: variables: update examples refering to DEPLOY_DIR_IMAGE
      ref-manual: variables: document IMGDEPLOYDIR
      ref-manual: migration-2.2: add note about IMGDEPLOYDIR
      ref-manual: variables: fixup example in IMAGE_CMD
      ref-manual: variables: fixup class reference in IMAGE_MANIFEST

Joe Slater (1):
      tcf-agent: change license to EPL/EDL

Joshua Watt (2):
      classes/buildhistory: Add option to strip path prefix
      classes/reproducible_build: Use atomic rename for SDE file

Justin Bronder (1):
      populate_sdk_ext: copy BBMULTICONFIG files

Kai Kang (1):
      valgrind: fix a typo

Khem Raj (14):
      harfbuzz: Fix unused-variable warning
      arch-armv4: Allow -march=armv4
      ffmpeg: Link in libatomic on riscv32
      libssp-nonshared: Use a different implementation for __stack_chk_fail
      qemuriscv: Enable 4 core emulation
      gcompat: Add recipe
      musl: Do not package glibc loader
      musl: Set UPSTREAM_CHECK_COMMITS
      Revert "libgcc-initial: Do not build fp128 to decimal ppc functions"
      qemu: Provide float128 via hwcaps2 on ppc64le
      linuxloader: Be aware of riscv32 ldso
      linuxloader.bbclass: Add entry for ppc64 LE glibc loader
      gcompat: Create symlinks to glibc ldso locations
      sdk: Enable do_populate_sdk with multilibs

Luca Boccassi (1):
      systemd: install new sysext tool via systemd-extra-utils

Marcus Comstedt (1):
      conf/machine-sdk: Add ppc64 SDK machine

Matt Spencer (1):
      systemd-conf: Prevent systemd-network from managing veth interfaces

Michael Halstead (1):
      releases: update to include 3.1.8

Michael Opdenacker (12):
      bitbake: docs: Add BB_HASHSERVE definition to glossary
      bitbake: doc: bitbake-user-manual: fix erroneous statement in glossary intro
      manuals: fix epub export warnings
      ref-manual: move migration guides to separate document
      releases: clarify supported and outdated releases
      releases: put release number after "Release Series"
      sdk-manual: fix broken references
      migration guides: remove index reference to BB_SETSCENE_VERIFY_FUNCTION2
      manuals: fix issues related to trailing dots
      sdk-manual: add missing quoting around "devtool upgrade"
      sdk-manual: fix wrong word
      sdk-manual: add missing index references

Ming Liu (2):
      u-boot-tools: fix a mkimage signature issue
      uboot-sign.bbclass: fix some install commands

Mingli Yu (2):
      sysstat: make the service start automatically
      boost: fix wrong type for mutex in regex v5

Nicolas Dechesne (3):
      index: remove the link/section to 'mega manual' from main page
      index: remove links to releases manual and index
      index: split releases manuals and indexes into two sections in the tree

Paul Barker (2):
      bitbake: asyncrpc: Add ping method
      bitbake: asyncrpc: Reduce verbosity

Quentin Schulz (6):
      docs: ref-manual: migration-3.0: remove reference to non-existing BB_SETSCENE_VERIFY_FUNCTION2
      docs: ref-manual: variables: add missing links to terms glossary
      bitbake: doc: user-manual: remove mentions to BBVERSIONS
      bitbake: doc: user-manual: ref-manual: remove mentions to BB_SETSCENE_VERIFY_FUNCTION2
      documentation: Makefile: turn warnings into errors by default
      docs: replace ``FOO`` by :term:`FOO` where possible

Richard Purdie (11):
      lttng-tools: upgrade 2.12.3 -> 2.12.4
      qemurunner: Try to ensure mmap'd libs are paged in
      qemurunner: Increase startup timeout 120 -> 300
      build-appliance-image: Update to master head revision
      test-manual: add initial reproducible builds documentation
      test-manual: Add initial YP Compatible documentation
      README: Tweak as the website isn't really new now
      README: Move to using markdown as the format
      perf: Use python3targetconfig to ensure we use target libraries
      ltp: Reinstate 'hanging' tests for evaluation
      README.poky: Formatting and content cleanup

Richard Weinberger (1):
      Document erofs filesystem targets

Robert P. J. Day (2):
      ref-manual: add SRCTREECOVEREDTASKS to variable glossary
      ref-manual: add glossary entry for NON_MULTILIB_RECIPES

Ross Burton (11):
      mx: remove from Openembedded Core
      core-image-weston: remove Clutter examples
      Remove Clutter and Cogl
      oeqa: remove Clutter usage
      meta-poky: remove clutter references
      Remove Clutter references
      gcc: enable branch protection by standard
      image_types: add zsync conversions
      avahi: apply fix for CVE-2021-3468
      qemu: fix virtio vhost-user-gpu CVEs
      gcc: replace gdb helper install revert with the upstream fix

Sakib Sajal (3):
      oeqa/core/target/qemu.py: display contents of dumped files
      oe-time-dd-test.sh: improve output formatting
      oe-time-dd-test.sh: add iostat command

Saul Wold (1):
      qemurunner: add second qmp port

Scott Weaver (1):
      bitbake: fetch2: add check for empty SRC_URI hash string

Tim Orling (8):
      maintainers.inc: update email address
      python3-scons: upgrade 3.1.2 -> 4.1.0; simplify
      python3-hypothesis: upgrade 6.13.7 -> 6.13.14
      at-spi2-core: upgrade 2.40.1 -> 2.40.2
      python3-importlib-metadata: upgrade 4.4.0 -> 4.5.0
      python3-manifest: add statistics subpackage
      python3-hypothesis: upgrade 6.13.14 -> 6.14.0
      python3: skip tests requiring tools-sdk

Tony Battersby (1):
      glibc: fix path to place zdump in the tzcode package

Tony Tascioglu (3):
      valgrind: Improve non-deterministic ptest reliability
      valgrind: remove buggy ptest from arm64
      valgrind: Actually install list of non-deterministic ptests

hongxu (1):
      nativesdk-libdnf: fix installed and not shipped files

wangmy (21):
      cmake: upgrade 3.20.2 -> 3.20.3
      mtools: upgrade 4.0.27 -> 4.0.29
      python3-magic: upgrade 0.4.22 -> 0.4.23
      less: upgrade 586 -> 589
      python3-libarchive-c: upgrade 3.0 -> 3.1
      diffoscope: upgrade 175 -> 177
      dtc: upgrade 1.6.0 -> 1.6.1
      git: upgrade 2.31.1 -> 2.32.0
      gnutls: upgrade 3.7.1 -> 3.7.2
      go: upgrade 1.16.4 -> 1.16.5
      less: upgrade 589 -> 590
      ethtool: upgrade 5.10 -> 5.12
      m4: upgrade 1.4.18 -> 1.4.19
      alsa-lib: upgrade 1.2.5 -> 1.2.5.1
      alsa-utils: upgrade 1.2.5 -> 1.2.5.1
      alsa-topology-conf: upgrade 1.2.5 -> 1.2.5.1
      alsa-ucm-conf: upgrade 1.2.5 -> 1.2.5.1
      blktrace: upgrade 1.2.0 -> 1.3.0
      enchant2: upgrade 2.2.15 -> 2.3.0
      librepo: upgrade 1.14.0 -> 1.14.1
      createrepo-c: upgrade 0.17.2 -> 0.17.3

zangrc (1):
      python3-pycairo: upgrade 1.20.0 -> 1.20.1

zhengruoqin (6):
      python3-importlib-metadata: upgrade 4.3.0 -> 4.4.0
      libogg: upgrade 1.3.4 -> 1.3.5
      liburcu: upgrade 0.12.2 -> 0.13.0
      libcomps: upgrade 0.1.16 -> 0.1.17
      python3-dbusmock: upgrade 0.23.0 -> 0.23.1
      nfs-utils: upgrade 2.5.3 -> 2.5.4

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Iac124e214336beb9cab7fb3b67a6968d4e34d06f

1 files changed, 327 insertions, 0 deletions

diff --git a/poky/documentation/migration-guides/migration-2.4.rst b/poky/documentation/migration-guides/migration-2.4.rst
new file mode 100644
index 000000000..07f2bef62
--- /dev/null
+++ b/poky/documentation/migration-guides/migration-2.4.rst
@@ -0,0 +1,327 @@
+Release 2.4 (rocko)
+===================
+
+This section provides migration information for moving to the Yocto
+Project 2.4 Release (codename "rocko") from the prior release.
+
+.. _migration-2.4-memory-resident-mode:
+
+Memory Resident Mode
+--------------------
+
+A persistent mode is now available in BitBake's default operation,
+replacing its previous "memory resident mode" (i.e.
+``oe-init-build-env-memres``). Now you only need to set
+:term:`BB_SERVER_TIMEOUT` to a timeout (in
+seconds) and BitBake's server stays resident for that amount of time
+between invocations. The ``oe-init-build-env-memres`` script has been
+removed since a separate environment setup script is no longer needed.
+
+.. _migration-2.4-packaging-changes:
+
+Packaging Changes
+-----------------
+
+This section provides information about packaging changes that have
+occurred:
+
+-  ``python3`` Changes:
+
+   -  The main "python3" package now brings in all of the standard
+      Python 3 distribution rather than a subset. This behavior matches
+      what is expected based on traditional Linux distributions. If you
+      wish to install a subset of Python 3, specify ``python-core`` plus
+      one or more of the individual packages that are still produced.
+
+   -  ``python3``: The ``bz2.py``, ``lzma.py``, and
+      ``_compression.py`` scripts have been moved from the
+      ``python3-misc`` package to the ``python3-compression`` package.
+
+-  ``binutils``: The ``libbfd`` library is now packaged in a separate
+   "libbfd" package. This packaging saves space when certain tools (e.g.
+   ``perf``) are installed. In such cases, the tools only need
+   ``libbfd`` rather than all the packages in ``binutils``.
+
+-  ``util-linux`` Changes:
+
+   -  The ``su`` program is now packaged in a separate "util-linux-su"
+      package, which is only built when "pam" is listed in the
+      :term:`DISTRO_FEATURES` variable.
+      ``util-linux`` should not be installed unless it is needed because
+      ``su`` is normally provided through the shadow file format. The
+      main ``util-linux`` package has runtime dependencies (i.e.
+      :term:`RDEPENDS`) on the ``util-linux-su`` package
+      when "pam" is in ``DISTRO_FEATURES``.
+
+   -  The ``switch_root`` program is now packaged in a separate
+      "util-linux-switch-root" package for small initramfs images that
+      do not need the whole ``util-linux`` package or the busybox
+      binary, which are both much larger than ``switch_root``. The main
+      ``util-linux`` package has a recommended runtime dependency (i.e.
+      :term:`RRECOMMENDS`) on the
+      ``util-linux-switch-root`` package.
+
+   -  The ``ionice`` program is now packaged in a separate
+      "util-linux-ionice" package. The main ``util-linux`` package has a
+      recommended runtime dependency (i.e. :term:`RRECOMMENDS`) on the
+      ``util-linux-ionice`` package.
+
+-  ``initscripts``: The ``sushell`` program is now packaged in a
+   separate "initscripts-sushell" package. This packaging change allows
+   systems to pull ``sushell`` in when ``selinux`` is enabled. The
+   change also eliminates needing to pull in the entire ``initscripts``
+   package. The main ``initscripts`` package has a runtime dependency
+   (i.e. :term:`RDEPENDS`) on the ``sushell`` package when "selinux" is in
+   ``DISTRO_FEATURES``.
+
+-  ``glib-2.0``: The ``glib-2.0`` package now has a recommended
+   runtime dependency (i.e. ``RRECOMMENDS``) on the ``shared-mime-info``
+   package, since large portions of GIO are not useful without the MIME
+   database. You can remove the dependency by using the
+   :term:`BAD_RECOMMENDATIONS` variable if
+   ``shared-mime-info`` is too large and is not required.
+
+-  *Go Standard Runtime:* The Go standard runtime has been split out
+   from the main ``go`` recipe into a separate ``go-runtime`` recipe.
+
+.. _migration-2.4-removed-recipes:
+
+Removed Recipes
+---------------
+
+The following recipes have been removed:
+
+-  ``acpitests``: This recipe is not maintained.
+
+-  ``autogen-native``: No longer required by Grub, oe-core, or
+   meta-oe.
+
+-  ``bdwgc``: Nothing in OpenEmbedded-Core requires this recipe. It
+   has moved to meta-oe.
+
+-  ``byacc``: This recipe was only needed by rpm 5.x and has moved to
+   meta-oe.
+
+-  ``gcc (5.4)``: The 5.4 series dropped the recipe in favor of 6.3 /
+   7.2.
+
+-  ``gnome-common``: Deprecated upstream and no longer needed.
+
+-  ``go-bootstrap-native``: Go 1.9 does its own bootstrapping so this
+   recipe has been removed.
+
+-  ``guile``: This recipe was only needed by ``autogen-native`` and
+   ``remake``. The recipe is no longer needed by either of these
+   programs.
+
+-  ``libclass-isa-perl``: This recipe was previously needed for LSB 4,
+   no longer needed.
+
+-  ``libdumpvalue-perl``: This recipe was previously needed for LSB 4,
+   no longer needed.
+
+-  ``libenv-perl``: This recipe was previously needed for LSB 4, no
+   longer needed.
+
+-  ``libfile-checktree-perl``: This recipe was previously needed for
+   LSB 4, no longer needed.
+
+-  ``libi18n-collate-perl``: This recipe was previously needed for LSB
+   4, no longer needed.
+
+-  ``libiconv``: This recipe was only needed for ``uclibc``, which was
+   removed in the previous release. ``glibc`` and ``musl`` have their
+   own implementations. ``meta-mingw`` still needs ``libiconv``, so it
+   has been moved to ``meta-mingw``.
+
+-  ``libpng12``: This recipe was previously needed for LSB. The
+   current ``libpng`` is 1.6.x.
+
+-  ``libpod-plainer-perl``: This recipe was previously needed for LSB
+   4, no longer needed.
+
+-  ``linux-yocto (4.1)``: This recipe was removed in favor of 4.4,
+   4.9, 4.10 and 4.12.
+
+-  ``mailx``: This recipe was previously only needed for LSB
+   compatibility, and upstream is defunct.
+
+-  ``mesa (git version only)``: The git version recipe was stale with
+   respect to the release version.
+
+-  ``ofono (git version only)``: The git version recipe was stale with
+   respect to the release version.
+
+-  ``portmap``: This recipe is obsolete and is superseded by
+   ``rpcbind``.
+
+-  ``python3-pygpgme``: This recipe is old and unmaintained. It was
+   previously required by ``dnf``, which has switched to official
+   ``gpgme`` Python bindings.
+
+-  ``python-async``: This recipe has been removed in favor of the
+   Python 3 version.
+
+-  ``python-gitdb``: This recipe has been removed in favor of the
+   Python 3 version.
+
+-  ``python-git``: This recipe was removed in favor of the Python 3
+   version.
+
+-  ``python-mako``: This recipe was removed in favor of the Python 3
+   version.
+
+-  ``python-pexpect``: This recipe was removed in favor of the Python
+   3 version.
+
+-  ``python-ptyprocess``: This recipe was removed in favor of Python
+   the 3 version.
+
+-  ``python-pycurl``: Nothing is using this recipe in
+   OpenEmbedded-Core (i.e. ``meta-oe``).
+
+-  ``python-six``: This recipe was removed in favor of the Python 3
+   version.
+
+-  ``python-smmap``: This recipe was removed in favor of the Python 3
+   version.
+
+-  ``remake``: Using ``remake`` as the provider of ``virtual/make`` is
+   broken. Consequently, this recipe is not needed in OpenEmbedded-Core.
+
+.. _migration-2.4-kernel-device-tree-move:
+
+Kernel Device Tree Move
+-----------------------
+
+Kernel Device Tree support is now easier to enable in a kernel recipe.
+The Device Tree code has moved to a
+:ref:`kernel-devicetree <ref-classes-kernel-devicetree>` class.
+Functionality is automatically enabled for any recipe that inherits the
+:ref:`kernel <ref-classes-kernel>` class and sets the
+:term:`KERNEL_DEVICETREE` variable. The
+previous mechanism for doing this,
+``meta/recipes-kernel/linux/linux-dtb.inc``, is still available to avoid
+breakage, but triggers a deprecation warning. Future releases of the
+Yocto Project will remove ``meta/recipes-kernel/linux/linux-dtb.inc``.
+It is advisable to remove any ``require`` statements that request
+``meta/recipes-kernel/linux/linux-dtb.inc`` from any custom kernel
+recipes you might have. This will avoid breakage in post 2.4 releases.
+
+.. _migration-2.4-package-qa-changes:
+
+Package QA Changes
+------------------
+
+The following package QA changes took place:
+
+-  The "unsafe-references-in-scripts" QA check has been removed.
+
+-  If you refer to ``${COREBASE}/LICENSE`` within
+   :term:`LIC_FILES_CHKSUM` you receive a
+   warning because this file is a description of the license for
+   OE-Core. Use ``${COMMON_LICENSE_DIR}/MIT`` if your recipe is
+   MIT-licensed and you cannot use the preferred method of referring to
+   a file within the source tree.
+
+.. _migration-2.4-readme-changes:
+
+``README`` File Changes
+-----------------------
+
+The following are changes to ``README`` files:
+
+-  The main Poky ``README`` file has been moved to the ``meta-poky``
+   layer and has been renamed ``README.poky``. A symlink has been
+   created so that references to the old location work.
+
+-  The ``README.hardware`` file has been moved to ``meta-yocto-bsp``. A
+   symlink has been created so that references to the old location work.
+
+-  A ``README.qemu`` file has been created with coverage of the
+   ``qemu*`` machines.
+
+.. _migration-2.4-miscellaneous-changes:
+
+Miscellaneous Changes
+---------------------
+
+The following are additional changes:
+
+-  The ``ROOTFS_PKGMANAGE_BOOTSTRAP`` variable and any references to it
+   have been removed. You should remove this variable from any custom
+   recipes.
+
+-  The ``meta-yocto`` directory has been removed.
+
+   .. note::
+
+      In the Yocto Project 2.1 release
+      meta-yocto
+      was renamed to
+      meta-poky
+      and the
+      meta-yocto
+      subdirectory remained to avoid breaking existing configurations.
+
+-  The ``maintainers.inc`` file, which tracks maintainers by listing a
+   primary person responsible for each recipe in OE-Core, has been moved
+   from ``meta-poky`` to OE-Core (i.e. from
+   ``meta-poky/conf/distro/include`` to ``meta/conf/distro/include``).
+
+-  The :ref:`buildhistory <ref-classes-buildhistory>` class now makes
+   a single commit per build rather than one commit per subdirectory in
+   the repository. This behavior assumes the commits are enabled with
+   :term:`BUILDHISTORY_COMMIT` = "1", which
+   is typical. Previously, the ``buildhistory`` class made one commit
+   per subdirectory in the repository in order to make it easier to see
+   the changes for a particular subdirectory. To view a particular
+   change, specify that subdirectory as the last parameter on the
+   ``git show`` or ``git diff`` commands.
+
+-  The ``x86-base.inc`` file, which is included by all x86-based machine
+   configurations, now sets :term:`IMAGE_FSTYPES`
+   using ``?=`` to "live" rather than appending with ``+=``. This change
+   makes the default easier to override.
+
+-  BitBake fires multiple "BuildStarted" events when multiconfig is
+   enabled (one per configuration). For more information, see the
+   ":ref:`Events <bitbake:bitbake-user-manual/bitbake-user-manual-metadata:events>`" section in the BitBake User
+   Manual.
+
+-  By default, the ``security_flags.inc`` file sets a
+   :term:`GCCPIE` variable with an option to enable
+   Position Independent Executables (PIE) within ``gcc``. Enabling PIE
+   in the GNU C Compiler (GCC), makes Return Oriented Programming (ROP)
+   attacks much more difficult to execute.
+
+-  OE-Core now provides a ``bitbake-layers`` plugin that implements a
+   "create-layer" subcommand. The implementation of this subcommand has
+   resulted in the ``yocto-layer`` script being deprecated and will
+   likely be removed in the next Yocto Project release.
+
+-  The ``vmdk``, ``vdi``, and ``qcow2`` image file types are now used in
+   conjunction with the "wic" image type through ``CONVERSION_CMD``.
+   Consequently, the equivalent image types are now ``wic.vmdk``,
+   ``wic.vdi``, and ``wic.qcow2``, respectively.
+
+-  ``do_image_<type>[depends]`` has replaced ``IMAGE_DEPENDS_<type>``.
+   If you have your own classes that implement custom image types, then
+   you need to update them.
+
+-  OpenSSL 1.1 has been introduced. However, the default is still 1.0.x
+   through the :term:`PREFERRED_VERSION`
+   variable. This preference is set is due to the remaining
+   compatibility issues with other software. The
+   :term:`PROVIDES` variable in the openssl 1.0 recipe
+   now includes "openssl10" as a marker that can be used in
+   :term:`DEPENDS` within recipes that build software
+   that still depend on OpenSSL 1.0.
+
+-  To ensure consistent behavior, BitBake's "-r" and "-R" options (i.e.
+   prefile and postfile), which are used to read or post-read additional
+   configuration files from the command line, now only affect the
+   current BitBake command. Before these BitBake changes, these options
+   would "stick" for future executions.
+
+