tree be327a91cefd839858bc4e32b1f1609408ecc254
parent 6868239551ebbefe0a87f0ff8565917c4f2859f5
author George Burgess IV <gbiv@google.com> 1602186627 -0700
committer George Burgess <gbiv@chromium.org> 1602263836 +0000

rust_uprev: emerge arm-none-eabi-gcc & do it in parallel

arm-none-eabi-gcc isn't mentioned in the list of RUSTC_TARGET_TRIPLES,
though it's necessary (we check for it in the ebuild)

While I'm in the area, if we're unconditionally emerge'ing all of these
anyway, do it in parallel. Doing so makes installation take 1/4 as long.

BUG=chromium:1136579, chromium:1112551
TEST=Ran the script

Change-Id: I49063487b2e2b2c83e2ef30dd8f8904b13c59f38
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2462927
Reviewed-by: Tiancong Wang <tcwang@google.com>
Tested-by: George Burgess <gbiv@chromium.org>