James Zern 47a1718c4d configure: avoid default when CROSS is set to null
avoids picking up defaults if CROSS is forcibly set empty as in:
$ CROSS= ./configure ...

BUG=1121

Change-Id: I6af91959288dede01efe3e5945698ab249eb6ec3
2015-12-21 22:09:52 -08:00
..