Valerii Chernous e9558a166e elf: Discard input .note.gnu.build-id sections
Originally issue:
building of glibc 2.32 or 2.34 with option "-Wl,--build-id"
produce libc.so.6 with section ".note.gnu.build-id" that have
invalid(double, 0x48) section size. It happens because glibc
use sublibraries for linking libc.so.6
ld produce this sublibraries with build-id section and on last
linking stage loads this sections as input for linking.
ld should create new(valid) ".note.gnu.build-id" into function
ldelf_setup_build_id on last linking stage but it skip creating because
build-id section already exists.
As result libc.so.6 contain ".note.gnu.build-id" with build-ids from
sublibraries and without valid build-id

Howto solved:
1. Discard input .note.gnu.build-id sections.
2. Clear the build ID field before writing.
3. Use bfd_make_section_anyway_with_flags to create the output
   .note.gnu.build-id section.

Upstream-Status: Backport

Reference to upstream patch:
[https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=1f1d0f8888a6c944e612b416a2a6e11abcf5199f]

(From OE-Core rev: 68bbff44a481a036dc7d39e5d5745a01ccffdb95)

Signed-off-by: Valerii Chernous <vchernou@cisco.com>
Signed-off-by: Valery Chernous <valery.chernous@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2021-12-12 11:27:24 +00:00
2021-07-19 18:07:21 +01:00

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

The project works using a mailing list patch submission process. Patches should be sent to the mailing list for the repository the components originate from (see below). Throughout the Yocto Project, the README files in the component in question should detail where to send patches, who the maintainers are and where bugs should be reported.

A guide to submitting patches to OpenEmbedded is available at:

https://www.openembedded.org/wiki/How_to_submit_a_patch_to_OpenEmbedded

There is good documentation on how to write/format patches at:

https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines

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/):

BitBake (files in bitbake/):

Documentation (files in documentation/):

meta-yocto (files in meta-poky/, meta-yocto-bsp/):

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.

CII Best Practices

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