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Andrew Geisslerc9f78652020-09-18 14:11:35 -05001Moving to the Yocto Project 1.8 Release
2=======================================
3
4This section provides migration information for moving to the Yocto
5Project 1.8 Release from the prior release.
6
7.. _migration-1.8-removed-recipes:
8
9Removed Recipes
10---------------
11
12The following recipes have been removed:
13
14- ``owl-video``: Functionality replaced by ``gst-player``.
15
16- ``gaku``: Functionality replaced by ``gst-player``.
17
18- ``gnome-desktop``: This recipe is now available in ``meta-gnome`` and
19 is no longer needed.
20
21- ``gsettings-desktop-schemas``: This recipe is now available in
22 ``meta-gnome`` and is no longer needed.
23
24- ``python-argparse``: The ``argparse`` module is already provided in
25 the default Python distribution in a package named
26 ``python-argparse``. Consequently, the separate ``python-argparse``
27 recipe is no longer needed.
28
29- ``telepathy-python, libtelepathy, telepathy-glib, telepathy-idle, telepathy-mission-control``:
30 All these recipes have moved to ``meta-oe`` and are consequently no
31 longer needed by any recipes in OpenEmbedded-Core.
32
33- ``linux-yocto_3.10`` and ``linux-yocto_3.17``: Support for the
34 linux-yocto 3.10 and 3.17 kernels has been dropped. Support for the
35 3.14 kernel remains, while support for 3.19 kernel has been added.
36
37- ``poky-feed-config-opkg``: This recipe has become obsolete and is no
38 longer needed. Use ``distro-feed-config`` from ``meta-oe`` instead.
39
40- ``libav 0.8.x``: ``libav 9.x`` is now used.
41
42- ``sed-native``: No longer needed. A working version of ``sed`` is
43 expected to be provided by the host distribution.
44
45.. _migration-1.8-bluez:
46
47BlueZ 4.x / 5.x Selection
48-------------------------
49
50Proper built-in support for selecting BlueZ 5.x in preference to the
51default of 4.x now exists. To use BlueZ 5.x, simply add "bluez5" to your
52:term:`DISTRO_FEATURES` value. If you had
53previously added append files (``*.bbappend``) to make this selection,
54you can now remove them.
55
56Additionally, a ``bluetooth`` class has been added to make selection of
57the appropriate bluetooth support within a recipe a little easier. If
58you wish to make use of this class in a recipe, add something such as
59the following: ::
60
61 inherit bluetooth
62 PACKAGECONFIG ??= "${@bb.utils.contains('DISTRO_FEATURES', 'bluetooth', '${BLUEZ}', '', d)}"
63 PACKAGECONFIG[bluez4] = "--enable-bluetooth,--disable-bluetooth,bluez4"
64 PACKAGECONFIG[bluez5] = "--enable-bluez5,--disable-bluez5,bluez5"
65
66.. _migration-1.8-kernel-build-changes:
67
68Kernel Build Changes
69--------------------
70
71The kernel build process was changed to place the source in a common
72shared work area and to place build artifacts separately in the source
73code tree. In theory, migration paths have been provided for most common
74usages in kernel recipes but this might not work in all cases. In
75particular, users need to ensure that ``${S}`` (source files) and
76``${B}`` (build artifacts) are used correctly in functions such as
77:ref:`ref-tasks-configure` and
78:ref:`ref-tasks-install`. For kernel recipes that do not
79inherit from ``kernel-yocto`` or include ``linux-yocto.inc``, you might
80wish to refer to the ``linux.inc`` file in the ``meta-oe`` layer for the
81kinds of changes you need to make. For reference, here is the
Andrew Geissler09209ee2020-12-13 08:44:15 -060082:oe_git:`commit </meta-openembedded/commit/meta-oe/recipes-kernel/linux/linux.inc?id=fc7132ede27ac67669448d3d2845ce7d46c6a1ee>`
Andrew Geisslerc9f78652020-09-18 14:11:35 -050083where the ``linux.inc`` file in ``meta-oe`` was updated.
84
85Recipes that rely on the kernel source code and do not inherit the
86module classes might need to add explicit dependencies on the
87``do_shared_workdir`` kernel task, for example: ::
88
89 do_configure[depends] += "virtual/kernel:do_shared_workdir"
90
91.. _migration-1.8-ssl:
92
93SSL 3.0 is Now Disabled in OpenSSL
94----------------------------------
95
96SSL 3.0 is now disabled when building OpenSSL. Disabling SSL 3.0 avoids
97any lingering instances of the POODLE vulnerability. If you feel you
98must re-enable SSL 3.0, then you can add an append file (``*.bbappend``)
99for the ``openssl`` recipe to remove "-no-ssl3" from
100:term:`EXTRA_OECONF`.
101
102.. _migration-1.8-default-sysroot-poisoning:
103
104Default Sysroot Poisoning
105-------------------------
106
107``gcc's`` default sysroot and include directories are now "poisoned". In
108other words, the sysroot and include directories are being redirected to
109a non-existent location in order to catch when host directories are
110being used due to the correct options not being passed. This poisoning
111applies both to the cross-compiler used within the build and to the
112cross-compiler produced in the SDK.
113
114If this change causes something in the build to fail, it almost
115certainly means the various compiler flags and commands are not being
116passed correctly to the underlying piece of software. In such cases, you
117need to take corrective steps.
118
119.. _migration-1.8-rebuild-improvements:
120
121Rebuild Improvements
122--------------------
123
124Changes have been made to the :ref:`base <ref-classes-base>`,
125:ref:`autotools <ref-classes-autotools>`, and
126:ref:`cmake <ref-classes-cmake>` classes to clean out generated files
127when the :ref:`ref-tasks-configure` task needs to be
128re-executed.
129
130One of the improvements is to attempt to run "make clean" during the
131``do_configure`` task if a ``Makefile`` exists. Some software packages
132do not provide a working clean target within their make files. If you
133have such recipes, you need to set
134:term:`CLEANBROKEN` to "1" within the recipe, for example: ::
135
136 CLEANBROKEN = "1"
137
138.. _migration-1.8-qa-check-and-validation-changes:
139
140QA Check and Validation Changes
141-------------------------------
142
143The following QA Check and Validation Changes have occurred:
144
145- Usage of ``PRINC`` previously triggered a warning. It now triggers an
146 error. You should remove any remaining usage of ``PRINC`` in any
147 recipe or append file.
148
149- An additional QA check has been added to detect usage of ``${D}`` in
150 :term:`FILES` values where :term:`D` values
151 should not be used at all. The same check ensures that ``$D`` is used
152 in ``pkg_preinst/pkg_postinst/pkg_prerm/pkg_postrm`` functions
153 instead of ``${D}``.
154
155- :term:`S` now needs to be set to a valid value within a
156 recipe. If ``S`` is not set in the recipe, the directory is not
157 automatically created. If ``S`` does not point to a directory that
158 exists at the time the :ref:`ref-tasks-unpack` task
159 finishes, a warning will be shown.
160
161- :term:`LICENSE` is now validated for correct
162 formatting of multiple licenses. If the format is invalid (e.g.
163 multiple licenses are specified with no operators to specify how the
164 multiple licenses interact), then a warning will be shown.
165
166.. _migration-1.8-miscellaneous-changes:
167
168Miscellaneous Changes
169---------------------
170
171The following miscellaneous changes have occurred:
172
173- The ``send-error-report`` script now expects a "-s" option to be
174 specified before the server address. This assumes a server address is
175 being specified.
176
177- The ``oe-pkgdata-util`` script now expects a "-p" option to be
178 specified before the ``pkgdata`` directory, which is now optional. If
179 the ``pkgdata`` directory is not specified, the script will run
180 BitBake to query :term:`PKGDATA_DIR` from the
181 build environment.
182
183