Vadim Bendebury 0433548ac8 usb_updater: allow to define target environment
It is necessary to be able to build usb_updater for both host and
board environments.

When building for board environments the appropriate compiler and
binutils are defined in the environment. Allow the environment
definitions to take precedence over local definitions.

BUG=none
TEST=inside and outside chroot:
   . ran 'make clean; make; verified that command can be run on the
     host.

   inside chroot:
   . ran 'emerge-kevin ec-utils' and verified using the 'file' utility
     that the executable in /build/kevin/usr/sbin/usb_updater is built
     for arm

Change-Id: If2ac4a4e7f7ece188eba5ff917a510363c6d1990
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/353165
Reviewed-by: Bill Richardson <wfrichar@chromium.org>
2016-06-16 18:52:35 -07:00
2016-06-16 16:07:20 -07:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2015-12-08 20:05:05 -08:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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