OpenEmbedded/Yocto layer for the Sourcery G++ toolchain
- openembedded-core layer, with a matching branch (i.e. master of oe-core and master of meta-sourcery).
- meta-external-toolchain layer (browse), with a matching branch
- bitbake, with a matching branch.
- An installed Sourcery G++ toolchain
- An existing build directory configured for this bitbake and openembedded-core.
Usage & Instructions
If it's an ia32 toolchain, make sure you did not let it modify your PATH, and if you did, remove it.
This is necessary because the ia32 Sourcery G++ toolchain shipped non-prefixed binaries (e.g.
i586-none-linux-gcc), which means bitbake would be unable to run the host's gcc directly anymore.
Add the meta-sourcery layer to your
conf/bblayers.conf. Please make certain that it is listed before the
metalayer, as this ensures meta-sourcery gets priority over meta.
EXTERNAL_TOOLCHAIN = "/path/to/your/sourcery-g++-install"in
If the external toolchain was built with linux-libc-headers from the 4.8 Linux kernel or newer, set
KERNEL_48_PATCH_REMOVE = ""in
conf/local.confto fix the build of the
- If the user chooses to, they may optionally decide to rebuild the Sourcery G++ glibc
from source, if they have downloaded the corresponding source archive from Mentor
Graphics. To so, set
TCMODE = "external-sourcery-rebuild-libc", rather than relying on the default value of
external-sourcery. After setting TCMODE appropriately, you must also set
SOURCERY_SRC_FILE = "/path/to/your/sourcery-g++-source-tarball"or
SOURCERY_SRC_URI = "http://some.domain/some-path".
The meta-sourcery layer.conf automatically defines
TCMODE for us. The tcmode
performs a number of operations:
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
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.
This layer is maintained by Mentor Graphics Corporation. Please direct all support requests for this layer to the GitHub repository issues interface.
To Do List