Rust targets have the form of 'arch-unknown-linux-gnu' while
oe's native targets are 'arch-linux-gnu', e.g. omit the vendor.
The effect this has on rust-native builds is that rust first builds
itself as stage0 for arch-unknown-linux-gnu, then builds itself
again for arch-unknown-linux-gnu, then finally uses the compiler
from second step to 'cross-compile' a compiler for 'arch-linux-gnu'.
This last step is really not necessary, and we could save 4 minutes
out of 12 if it is eliminated. Which is what this patch does
by setting the target directly to 'arch-unknown-linux-gnu'; rust's
build system then shortcuts the build process after the second step.
Given a working rust-native will be needed as early as possible in a
typical yocto build (e.g. when in a not too distant future making a
useful kernel will not be possible without rust), producing it faster
is important.
(From OE-Core rev: a918ea5645d8a67cedaf3ecf6c382520bbcad85b)
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Move classes to classes-global or classes-recipe as appropriate to take
advantage of new bitbake functionality to check class scope/usage.
(From OE-Core rev: f5c128008365e141082c129417eb72d2751e8045)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
