poky: subtree update:0ac99625bf..796be0593a

Alexander Kanavin (31):
      netbase: upgrade 6.1 -> 6.2
      meson: upgrade 0.55.1 -> 0.56.0
      vulkan-samples: update to latest revision
      libcap: update 2.44 -> 2.45
      bind: upgrade 9.16.7 -> 9.16.9
      quota: upgrade 4.05 -> 4.06
      pango: upgrade 1.46.2 -> 1.48.0
      elfutils: upgrade 0.181 -> 0.182
      ifupdown: upgrade 0.8.35 -> 0.8.36
      createrepo-c: upgrade 0.16.1 -> 0.16.2
      acpica: upgrade 20200925 -> 20201113
      grep: upgrade 3.5 -> 3.6
      man-pages: upgrade 5.08 -> 5.09
      stress-ng: upgrade 0.11.23 -> 0.11.24
      libhandy: upgrade 1.0.1 -> 1.0.2
      piglit: upgrade to latest revision
      xkbcomp: upgrade 1.4.3 -> 1.4.4
      lz4: upgrade 1.9.2 -> 1.9.3
      bison: upgrade 3.7.3 -> 3.7.4
      python3-setuptools-scm: fix upstream version check
      cantarell-fonts: update 0.0.25 -> 0.201
      meta/lib/oe/reproducible.py: gitsm:// works just as fine as git:// for timestamps
      llvm: fix reproducibility
      ruby: fix reproducibility
      webkitgtk: fix reproducibility
      ffmpeg: fix reproducibility
      piglit: fix reproducibility
      serf: do not install the static library
      llvm: sort the lists in generated source reproducibibly
      kea: fix reproducibility
      poky.conf: do not write current date into distro version, use git hash instead

Andrej Valek (1):
      kernel-dummy: fix executing unexpected tasks

Anuj Mittal (1):
      releases.rst: add gatesgarth to current releases

Brett Warren (1):
      libffi: add patch to revert clang VFP workaround

Chandana kalluri (1):
      populate_sdk_ext: use SDK_CUSTOM_TEPLATECONF variable to enable custom templateconf.cfg

Changqing Li (1):
      buildtools-tarball: add wic dependency into extended buildtools

Diego Sueiro (2):
      modutils-initscripts: Fix modules.dep creation when USE_DEPMOD="0"
      initscripts: Change execution order between checkroot and modutils

Dmitry Baryshkov (2):
      linux-firmware: upgrade 20201022 -> 20201118
      linux-firmware: package ath11k firmware

Fabio Berton (1):
      mesa: Update 20.2.1 -> 20.2.4

Gratian Crisan (1):
      kernel-module-split.bbclass: fix kernel modules getting marked as CONFFILES

Jack Mitchell (3):
      Revert "connman: set service to conflict with systemd-networkd"
      systemd-conf: add PACKAGECONFIG to enable/disable auto ethernet DHCP
      systemd-conf: match ethernet interfaces by type rather than globbing

Joshua Watt (2):
      bitbake: hashserv: client: Fix AF_UNIX path length limits
      bitbake: hashserv: Fix broken AF_UNIX path length limit

Kai Kang (2):
      systemd-systemctl-native: capable to call without argument
      systemd.bbclass: update command to check systemctl available

Kevin Hao (1):
      tune-octeontx2.inc: Add tune for Marvell OCTEON TX2 core

Li Wang (2):
      qemu: CVE-2020-29129 CVE-2020-29130
      qemu: CVE-2020-25624

Luca Boccassi (1):
      dbus: move messagebus user to dbus-common package

Michael Halstead (1):
      releases: conf: add link to 3.1.4, update to include 3.1.4

Nicolas Dechesne (19):
      sphinx: add .vscode in .gitignore
      {dev,kernel,sdk}-manual: replace hardcoded release version with &DISTRO;
      sphinx: replace bitbake labels with references to corresponding title
      brief-yoctoprojectqs: replace labels with references to section title
      dev-manual: replace labels with references to section title
      ref-manual: replace labels with references to section title
      sdk-manual: replace labels with references to section title
      overview-manual: remove unused labels
      dev-manual: remove unused labels
      sphinx: rename top level document in each manual
      sphinx: use absolute paths for :doc: references
      test-manual: remove 'test-manual' from filenames
      toaster-manual: remove 'toaster-manual' from filenames
      dev-manual: remove 'dev-manual' from filenames
      kernel-dev: remove 'kernel-dev' from filenames
      profile-manual: remove 'profile-manual' from filenames
      overview-manual: remove 'overview-manual' from filenames
      sdk-manual: remove 'sdk' from filenames
      ref-manual: remove 'ref' from filenames

Paul Barker (5):
      documentation: Simplify yocto_wiki links
      documentation: Simplify yocto_git links
      ref-manual: Simplify oe_git links
      poky.conf: Add opensuseleap-15.2 and fedora-33 to tested distros
      poky.conf: Drop fedora-30 from tested distros

Peter Kjellerstedt (2):
      pseudo: Simplify pseudo_client_ignore_path_chroot()
      bitbake.conf: Add all layers (from BBLAYERS) to PSEUDO_IGNORE_PATHS

Richard Purdie (8):
      lz4: Use the new branch naming from upstream
      Revert "bitbake.conf: Add all layers (from BBLAYERS) to PSEUDO_IGNORE_PATHS"
      build-appliance-image: Update to master head revision
      bitbake: Revert "fetch2: use relative symlinks for anything pulled from PREMIRRORS"
      build-appliance-image: Update to master head revision
      metadata_scm: Fix signature handling of METADATA_REVISION and METADATA_BRANCH
      poky: Set SDK_VERSION explicitly
      build-appliance-image: Update to master head revision

Ross Burton (9):
      oeqa/devtool: use Yocto mirror for pv-1.5.3 tarball
      image_types: remove obsolete tar comment
      image_types: sort tarball file listings
      package_manager/ipk: neaten OPKGLIBDIR logic
      ldconfig-native: don't write auxiliary cache
      package_manager/ipk: improve remove_packaging_data
      oeqa/selftest/containerimage: update for improved cleanup
      coreutils: add SUSE-specific issues to CVE whitelist
      bitbake: msg: use safe YAML loader

Sinan Kaya (1):
      poky-tiny: enable section removal

Tomasz Dziendzielski (1):
      pseudo: Update to print PSEUDO_LOGFILE in abort message on path mismatches

sangeeta jain (1):
      meta/lib/oeqa/manual/oe-core.json: Update test_bitbake_devshell

zangrc (3):
      libinput: upgrade 1.16.3 -> 1.16.4
      lighttpd: upgrade 1.4.55 -> 1.4.56
      sysstat: upgrade 12.4.0 -> 12.4.1

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: I65f2f1c9d44433f3e62609240012c42256679b51

1 files changed, 350 insertions, 0 deletions

diff --git a/poky/documentation/ref-manual/features.rst b/poky/documentation/ref-manual/features.rst
new file mode 100644
index 000000000..89c06eb65
--- /dev/null
+++ b/poky/documentation/ref-manual/features.rst
@@ -0,0 +1,350 @@
+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+********
+Features
+********
+
+This chapter provides a reference of shipped machine and distro features
+you can include as part of your image, a reference on image features you
+can select, and a reference on feature backfilling.
+
+Features provide a mechanism for working out which packages should be
+included in the generated images. Distributions can select which
+features they want to support through the ``DISTRO_FEATURES`` variable,
+which is set or appended to in a distribution's configuration file such
+as ``poky.conf``, ``poky-tiny.conf``, ``poky-lsb.conf`` and so forth.
+Machine features are set in the ``MACHINE_FEATURES`` variable, which is
+set in the machine configuration file and specifies the hardware
+features for a given machine.
+
+These two variables combine to work out which kernel modules, utilities,
+and other packages to include. A given distribution can support a
+selected subset of features so some machine features might not be
+included if the distribution itself does not support them.
+
+One method you can use to determine which recipes are checking to see if
+a particular feature is contained or not is to ``grep`` through the
+:term:`Metadata` for the feature. Here is an example that
+discovers the recipes whose build is potentially changed based on a
+given feature:
+::
+
+   $ cd poky
+   $ git grep 'contains.*MACHINE_FEATURES.*feature'
+
+.. _ref-features-machine:
+
+Machine Features
+================
+
+The items below are features you can use with
+:term:`MACHINE_FEATURES`. Features do not have a
+one-to-one correspondence to packages, and they can go beyond simply
+controlling the installation of a package or packages. Sometimes a
+feature can influence how certain recipes are built. For example, a
+feature might determine whether a particular configure option is
+specified within the :ref:`ref-tasks-configure` task
+for a particular recipe.
+
+This feature list only represents features as shipped with the Yocto
+Project metadata:
+
+-  *acpi:* Hardware has ACPI (x86/x86_64 only)
+
+-  *alsa:* Hardware has ALSA audio drivers
+
+-  *apm:* Hardware uses APM (or APM emulation)
+
+-  *bluetooth:* Hardware has integrated BT
+
+-  *efi:* Support for booting through EFI
+
+-  *ext2:* Hardware HDD or Microdrive
+
+-  *keyboard:* Hardware has a keyboard
+
+-  *pcbios:* Support for booting through BIOS
+
+-  *pci:* Hardware has a PCI bus
+
+-  *pcmcia:* Hardware has PCMCIA or CompactFlash sockets
+
+-  *phone:* Mobile phone (voice) support
+
+-  *qvga:* Machine has a QVGA (320x240) display
+
+-  *rtc:* Machine has a Real-Time Clock
+
+-  *screen:* Hardware has a screen
+
+-  *serial:* Hardware has serial support (usually RS232)
+
+-  *touchscreen:* Hardware has a touchscreen
+
+-  *usbgadget:* Hardware is USB gadget device capable
+
+-  *usbhost:* Hardware is USB Host capable
+
+-  *vfat:* FAT file system support
+
+-  *wifi:* Hardware has integrated WiFi
+
+.. _ref-features-distro:
+
+Distro Features
+===============
+
+The items below are features you can use with
+:term:`DISTRO_FEATURES` to enable features across
+your distribution. Features do not have a one-to-one correspondence to
+packages, and they can go beyond simply controlling the installation of
+a package or packages. In most cases, the presence or absence of a
+feature translates to the appropriate option supplied to the configure
+script during the :ref:`ref-tasks-configure` task for
+the recipes that optionally support the feature.
+
+Some distro features are also machine features. These select features
+make sense to be controlled both at the machine and distribution
+configuration level. See the
+:term:`COMBINED_FEATURES` variable for more
+information.
+
+This list only represents features as shipped with the Yocto Project
+metadata:
+
+-  *alsa:* Include ALSA support (OSS compatibility kernel modules
+   installed if available).
+
+-  *api-documentation:* Enables generation of API documentation during
+   recipe builds. The resulting documentation is added to SDK tarballs
+   when the ``bitbake -c populate_sdk`` command is used. See the
+   ":ref:`sdk-manual/appendix-customizing-standard:adding api documentation to the standard sdk`"
+   section in the Yocto Project Application Development and the
+   Extensible Software Development Kit (eSDK) manual.
+
+-  *bluetooth:* Include bluetooth support (integrated BT only).
+
+-  *cramfs:* Include CramFS support.
+
+-  *directfb:* Include DirectFB support.
+
+-  *ext2:* Include tools for supporting for devices with internal
+   HDD/Microdrive for storing files (instead of Flash only devices).
+
+-  *ipsec:* Include IPSec support.
+
+-  *ipv6:* Include IPv6 support.
+
+-  *keyboard:* Include keyboard support (e.g. keymaps will be loaded
+   during boot).
+
+-  *ldconfig:* Include support for ldconfig and ``ld.so.conf`` on the
+   target.
+
+-  *nfs:* Include NFS client support (for mounting NFS exports on
+   device).
+
+-  *opengl:* Include the Open Graphics Library, which is a
+   cross-language, multi-platform application programming interface used
+   for rendering two and three-dimensional graphics.
+
+-  *pci:* Include PCI bus support.
+
+-  *pcmcia:* Include PCMCIA/CompactFlash support.
+
+-  *ppp:* Include PPP dialup support.
+
+-  *ptest:* Enables building the package tests where supported by
+   individual recipes. For more information on package tests, see the
+   ":ref:`dev-manual/common-tasks:testing packages with ptest`" section
+   in the Yocto Project Development Tasks Manual.
+
+-  *smbfs:* Include SMB networks client support (for mounting
+   Samba/Microsoft Windows shares on device).
+
+-  *systemd:* Include support for this ``init`` manager, which is a full
+   replacement of for ``init`` with parallel starting of services,
+   reduced shell overhead, and other features. This ``init`` manager is
+   used by many distributions.
+
+-  *usbgadget:* Include USB Gadget Device support (for USB
+   networking/serial/storage).
+
+-  *usbhost:* Include USB Host support (allows to connect external
+   keyboard, mouse, storage, network etc).
+
+-  *usrmerge:* Merges the ``/bin``, ``/sbin``, ``/lib``, and ``/lib64``
+   directories into their respective counterparts in the ``/usr``
+   directory to provide better package and application compatibility.
+
+-  *wayland:* Include the Wayland display server protocol and the
+   library that supports it.
+
+-  *wifi:* Include WiFi support (integrated only).
+
+-  *x11:* Include the X server and libraries.
+
+.. _ref-features-image:
+
+Image Features
+==============
+
+The contents of images generated by the OpenEmbedded build system can be
+controlled by the :term:`IMAGE_FEATURES` and
+:term:`EXTRA_IMAGE_FEATURES` variables that
+you typically configure in your image recipes. Through these variables,
+you can add several different predefined packages such as development
+utilities or packages with debug information needed to investigate
+application problems or profile applications.
+
+The following image features are available for all images:
+
+-  *allow-empty-password:* Allows Dropbear and OpenSSH to accept root
+   logins and logins from accounts having an empty password string.
+
+-  *dbg-pkgs:* Installs debug symbol packages for all packages installed
+   in a given image.
+
+-  *debug-tweaks:* Makes an image suitable for development (e.g. allows
+   root logins without passwords and enables post-installation logging).
+   See the 'allow-empty-password', 'empty-root-password', and
+   'post-install-logging' features in this list for additional
+   information.
+
+-  *dev-pkgs:* Installs development packages (headers and extra library
+   links) for all packages installed in a given image.
+
+-  *doc-pkgs:* Installs documentation packages for all packages
+   installed in a given image.
+
+-  *empty-root-password:* Sets the root password to an empty string,
+   which allows logins with a blank password.
+
+-  *package-management:* Installs package management tools and preserves
+   the package manager database.
+
+-  *post-install-logging:* Enables logging postinstall script runs to
+   the ``/var/log/postinstall.log`` file on first boot of the image on
+   the target system.
+
+   .. note::
+
+      To make the ``/var/log`` directory on the target persistent, use the
+      :term:`VOLATILE_LOG_DIR` variable by setting it to "no".
+
+-  *ptest-pkgs:* Installs ptest packages for all ptest-enabled recipes.
+
+-  *read-only-rootfs:* Creates an image whose root filesystem is
+   read-only. See the
+   ":ref:`dev-manual/common-tasks:creating a read-only root filesystem`"
+   section in the Yocto Project Development Tasks Manual for more
+   information.
+
+-  *splash:* Enables showing a splash screen during boot. By default,
+   this screen is provided by ``psplash``, which does allow
+   customization. If you prefer to use an alternative splash screen
+   package, you can do so by setting the ``SPLASH`` variable to a
+   different package name (or names) within the image recipe or at the
+   distro configuration level.
+
+-  *staticdev-pkgs:* Installs static development packages, which are
+   static libraries (i.e. ``*.a`` files), for all packages installed in
+   a given image.
+
+Some image features are available only when you inherit the
+:ref:`core-image <ref-classes-core-image>` class. The current list of
+these valid features is as follows:
+
+-  *hwcodecs:* Installs hardware acceleration codecs.
+
+-  *nfs-server:* Installs an NFS server.
+
+-  *perf:* Installs profiling tools such as ``perf``, ``systemtap``, and
+   ``LTTng``. For general information on user-space tools, see the
+   :doc:`/sdk-manual/index` manual.
+
+-  *ssh-server-dropbear:* Installs the Dropbear minimal SSH server.
+
+-  *ssh-server-openssh:* Installs the OpenSSH SSH server, which is more
+   full-featured than Dropbear. Note that if both the OpenSSH SSH server
+   and the Dropbear minimal SSH server are present in
+   ``IMAGE_FEATURES``, then OpenSSH will take precedence and Dropbear
+   will not be installed.
+
+-  *tools-debug:* Installs debugging tools such as ``strace`` and
+   ``gdb``. For information on GDB, see the
+   ":ref:`dev-manual/common-tasks:debugging with the gnu project debugger (gdb) remotely`" section
+   in the Yocto Project Development Tasks Manual. For information on
+   tracing and profiling, see the :doc:`/profile-manual/index`.
+
+-  *tools-sdk:* Installs a full SDK that runs on the device.
+
+-  *tools-testapps:* Installs device testing tools (e.g. touchscreen
+   debugging).
+
+-  *x11:* Installs the X server.
+
+-  *x11-base:* Installs the X server with a minimal environment.
+
+-  *x11-sato:* Installs the OpenedHand Sato environment.
+
+.. _ref-features-backfill:
+
+Feature Backfilling
+===================
+
+Sometimes it is necessary in the OpenEmbedded build system to extend
+:term:`MACHINE_FEATURES` or
+:term:`DISTRO_FEATURES` to control functionality
+that was previously enabled and not able to be disabled. For these
+cases, we need to add an additional feature item to appear in one of
+these variables, but we do not want to force developers who have
+existing values of the variables in their configuration to add the new
+feature in order to retain the same overall level of functionality.
+Thus, the OpenEmbedded build system has a mechanism to automatically
+"backfill" these added features into existing distro or machine
+configurations. You can see the list of features for which this is done
+by finding the
+:term:`DISTRO_FEATURES_BACKFILL` and
+:term:`MACHINE_FEATURES_BACKFILL`
+variables in the ``meta/conf/bitbake.conf`` file.
+
+Because such features are backfilled by default into all configurations
+as described in the previous paragraph, developers who wish to disable
+the new features need to be able to selectively prevent the backfilling
+from occurring. They can do this by adding the undesired feature or
+features to the
+:term:`DISTRO_FEATURES_BACKFILL_CONSIDERED`
+or
+:term:`MACHINE_FEATURES_BACKFILL_CONSIDERED`
+variables for distro features and machine features respectively.
+
+Here are two examples to help illustrate feature backfilling:
+
+-  *The "pulseaudio" distro feature option*: Previously, PulseAudio
+   support was enabled within the Qt and GStreamer frameworks. Because
+   of this, the feature is backfilled and thus enabled for all distros
+   through the ``DISTRO_FEATURES_BACKFILL`` variable in the
+   ``meta/conf/bitbake.conf`` file. However, your distro needs to
+   disable the feature. You can disable the feature without affecting
+   other existing distro configurations that need PulseAudio support by
+   adding "pulseaudio" to ``DISTRO_FEATURES_BACKFILL_CONSIDERED`` in
+   your distro's ``.conf`` file. Adding the feature to this variable
+   when it also exists in the ``DISTRO_FEATURES_BACKFILL`` variable
+   prevents the build system from adding the feature to your
+   configuration's ``DISTRO_FEATURES``, effectively disabling the
+   feature for that particular distro.
+
+-  *The "rtc" machine feature option*: Previously, real time clock (RTC)
+   support was enabled for all target devices. Because of this, the
+   feature is backfilled and thus enabled for all machines through the
+   ``MACHINE_FEATURES_BACKFILL`` variable in the
+   ``meta/conf/bitbake.conf`` file. However, your target device does not
+   have this capability. You can disable RTC support for your device
+   without affecting other machines that need RTC support by adding the
+   feature to your machine's ``MACHINE_FEATURES_BACKFILL_CONSIDERED``
+   list in the machine's ``.conf`` file. Adding the feature to this
+   variable when it also exists in the ``MACHINE_FEATURES_BACKFILL``
+   variable prevents the build system from adding the feature to your
+   configuration's ``MACHINE_FEATURES``, effectively disabling RTC
+   support for that particular machine.