commit 824cb38a0ab56f642784f9e42c6bd8c7f2e2a179
author Jack Rosenthal <jrosenth@chromium.org> Mon Dec 14 21:35:31 2020
committer Commit Bot <commit-bot@chromium.org> Tue Dec 15 21:15:47 2020
tree 9de125cbe1b353691b0623f70ae5c23e707d8df9
parent 40b55614cd4f24eba6623c91de7f5b845c6c6e63

toolchain: provide definition for chroot host-based LLVM toolchain

This provides a definition for an LLVM toolchain, which acts as a
chroot host-based toolchain.  This is for compiling unit tests and the
posix-ec project, not for real devices.

We need this to enable unit tests and posix-ec build in the commit
queue, since Zephyr SDK is not available in the chroot.

BUG=b:175248887
TEST=zmake configure -b -B $BUILD -t llvm projects/experimental/posix-ec
     $BUILD/build-singleimage/zephyr/zephyr.elf works

Change-Id: Ie71f53cf53503f9279aab654170c7bc2b7a80d20
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/zephyr-chrome/+/2590992
Tested-by: Jack Rosenthal <jrosenth@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Commit-Queue: Jack Rosenthal <jrosenth@chromium.org>