mirror of
https://github.com/thead-yocto-mirror/meta-external-toolchain
synced 2026-06-21 17:02:35 +02:00
0f1aee0d36
We need to be able to copy sources from the external toolchain into it in do_unpack, then back out into the install area in do_install. Note that attempts were made to bypass this indirection by having do_package directly copy sources from the external toolchain, and while this did function, it results in pseudo failures breaking the build. Further investigation could be done on this in the future. JIRA: SB-21854 Signed-off-by: Christopher Larson <chris_larson@mentor.com>
OpenEmbedded/Yocto layer for external toolchain support
Dependencies
- openembedded-core layer, with a matching branch (i.e. master of oe-core and master of meta-external-toolchain).
- bitbake, with a matching branch.
- An installed toolchain or OE/Yocto SDK
- An existing build directory configured for this bitbake and openembedded-core.
Usage & Instructions
- Cd to an existing build directory.
bitbake-layers add-layer /path/to/meta-external-toolchain.- Set
EXTERNAL_TOOLCHAIN = "/path/to/your/external-toolchain-install"inconf/local.conf.
If using a Yocto/OpenEmbedded SDK as an external toolchain
- Set
TCMODE = "external-oe-sdk"inconf/local.conf.
If using a different external toolchain
A non-OE/Yocto external toolchain may well require additional tweaks, we would
advise creating a custom tcmode based upon the external one, much as we do for
external-oe-sdk in this layer.
- Set
TCMODE = "external"inconf/local.conf
Behavior
The tcmode performs a number of operations:
- Sets
TARGET_PREFIXappropriately, after determining what prefix is in use by the toolchain - Sanity checks
EXTERNAL_TOOLCHAIN: does the path exist? does the expected sysroot exist? - Sets preferences so that external recipes are used in preference to building them from source, including cross recipes which link/wrap the toolchain cross binaries
Contributing
To contribute to this layer, please fork and submit pull requests to the github repository, or open issues for any bugs you find, or feature requests you have.
Maintainer
This layer is maintained by Siemens Digital Industries Software. Please direct all support requests for this layer to the GitHub repository issues interface.
To Do List
See TODO.md.