This is required for the eventual removal of `$PORTDIR` and
`$PORTDIR_OVERLAY` and ensures toolchain rebuilds/updates with
`./build_packages --nousepkg` don't erroniously try to use ebuilds from
`/usr/portage` inside of the SDK.
In order to fix up the build_toolchains script the crossdev overlay
needs to be setup properly, previously only setup_board did it.
Overall silences a lot of warnings and fixes an issue with crossdev:
/usr/bin/emerge-wrapper: line 48: /eclass/toolchain-funcs.eclass: No such file or directory
/usr/bin/emerge-wrapper: line 49: tc-arch: command not found
The portage CBUILD and HOSTCC variables need to be set to the SDK host to get
a proper cross build when building target binaries.
Change _configure_sysroot to use the CBUILD environment variable to set the
CBUILD and HOSTCC variables of ${ROOT}/etc/portage/make.conf. Also, fix up all
calls to _configure_sysroot to set the CBUILD environment variable.
Fixes setup_board failure when the host and target architectures differ.
Signed-off-by: Geoff Levand <geoff@infradead.org>
[marineam: fixed a copy/paste error]
Now this code can be shared with setup_board. Only required if
setup_board is called with --nousepkg which is rare to never but feels
like the correct thing to do. Alternatively setup_board could always
use binary packages (as it basically does now).
This replaces the cross-toolchain compile step in bootstrap_sdk and adds the
ability to build native toolchains using the cross toolchain. This is just
the first step towards actually providing the native toolchain in a container.
