The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/e87ccfb2130095282705b769d2d6f9a2be7627ba

commit e87ccfb2130095282705b769d2d6f9a2be7627ba
Author: Ting-Yuan Huang <laszio@chromium.org>
Date: Mon Aug 29 22:07:23 2016

sys-libs/libnih: always use gcc to build libnih

clang's having trouble building libnih with -mthumb.
The image doesn't boot.

BUG= chromium:642117 
TEST=compiles and boots

Change-Id: I5a7498901e1be56166be8f113131b14042e453c4
Reviewed-on: https://chromium-review.googlesource.com/377598
Commit-Ready: Ting-Yuan Huang <laszio@chromium.org>
Tested-by: Ting-Yuan Huang <laszio@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[add] https://crrev.com/e87ccfb2130095282705b769d2d6f9a2be7627ba/chromeos/config/env/sys-libs/libnih

llvm-next does not have this problem.
Will mark this as fixed and remove the workaround once the llvm upgrade completes.

 Issue 638998  has been merged into this issue.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/176484cd9e11ed7f1bcfa1c07c106240773929fd

commit 176484cd9e11ed7f1bcfa1c07c106240773929fd
Author: Yunlian Jiang <yunlian@google.com>
Date: Tue Feb 14 22:50:42 2017

libnih: use clang to build it.

We upgraded llvm and libnih works with new llvm on
arm now.

BUG= chromium:642117 
TEST=build libnih for veyron_jaq and it boots.

Change-Id: I085ba300ae9a65a0bdbca1c80ff059a68bf5a1c8
Reviewed-on: https://chromium-review.googlesource.com/442008
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>

[delete] https://crrev.com/4b25e9b6d2bdb796a318429cd492d296c6c9e654/chromeos/config/env/sys-libs/libnih