0904c4c34a
* ${EXTENDPE} and ${PR} was already dropped from ${WORKDIR} in:
https://lists.openembedded.org/g/openembedded-core/message/185818
adjust -fmacro-prefix-map and -fdebug-prefix-map similarly.
As we don't depend on PR in WORKDIR maybe we don't need it in
/usr/src/debug paths as well anymore.
* add TARGET_DBGSRC_DIR variable with "/usr/src/debug/${PN}/${PV}"
because there is quite a few places where this location is being
used in various recipes
* The interesting side-effect of this is that for DISTROs which still
use PR (e.g. webOS OSE), the difference in -fdebug-prefix-map causes
all binaries to be slightly different when rebuilt with different PR
(due to this path, even when otherwise they are binary reproducible)
and when the number of digits in PR changes (e.g. from r9 to r10) it
also results in slightly bigger binaries (and more unnecessary changes
in buildhistory diffs).
For example this foo binary, the difference between "new" and "old" is
extra patch applied in SRC_URI (which doesn't affect the foo binary,
but was the reason for PR bump).
And the binary is bigger with r10, identical with r6 and slightly
different due to debug-prefix-map between r6 and r7:
$ ls -la 1.0.0-175-*/image/usr/sbin/foo
-rwxr-xr-x 1 bitbake bitbake 30182460 Nov 8 08:29 1.0.0-175-new-r10/image/usr/sbin/foo
-rwxr-xr-x 1 bitbake bitbake 30182224 Nov 8 08:02 1.0.0-175-new-r6/image/usr/sbin/foo
-rwxr-xr-x 1 bitbake bitbake 30182224 Nov 8 07:49 1.0.0-175-new-r7/image/usr/sbin/foo
-rwxr-xr-x 1 bitbake bitbake 30182224 Nov 8 07:39 1.0.0-175-old-r6/image/usr/sbin/foo
$ md5sum 1.0.0-175-*/image/usr/sbin/foo
8e3ab67d596f8cc2f9c6320dab10af01 1.0.0-175-new-r10/image/usr/sbin/foo
f6ff1e64fe6affb9ba0d8f278cf7ed79 1.0.0-175-new-r6/image/usr/sbin/foo
6469a0b10aac233911e63c5ea97b03c0 1.0.0-175-new-r7/image/usr/sbin/foo
f6ff1e64fe6affb9ba0d8f278cf7ed79 1.0.0-175-old-r6/image/usr/sbin/foo
(From OE-Core rev: c84c8ba295eeaa0e0b7592364b0978f17a44c70b)
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/
OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.
Contribution Guidelines
Please refer to our contributor guide here: https://docs.yoctoproject.org/dev/contributor-guide/ for full details on how to submit changes.
Where to Send Patches
As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:
OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):
- Git repository: https://git.openembedded.org/openembedded-core/
- Mailing list: openembedded-core@lists.openembedded.org
BitBake (files in bitbake/):
- Git repository: https://git.openembedded.org/bitbake/
- Mailing list: bitbake-devel@lists.openembedded.org
Documentation (files in documentation/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/yocto-docs/
- Mailing list: docs@lists.yoctoproject.org
meta-yocto (files in meta-poky/, meta-yocto-bsp/):
- Git repository: https://git.yoctoproject.org/cgit/cgit.cgi/meta-yocto
- Mailing list: poky@lists.yoctoproject.org
If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.