Correctly use the AC_CANONICAL_* macros
Correctly use the AC_CANONICAL_* macros

http://www.gnu.org/software/autoconf/manual/autoconf.html#Using-System-Type

Change-Id: I40a13e84f5266ed20bc4db098502b1610ab71206
Signed-off-by: Timothy Gu <1ed1015336f6a462e9365b18ca61d9eb32e77fa2@gmail.com>

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