+choice BOARD_TYPE
+ prompt "Select which board to build for"
+ optional
+
+config CANYONLANDS
+ bool "Glacier"
+ help
+ Select this to build for the Canyonlands 460EX board.
+
+config GLACIER
+ bool "Glacier"
+ help
+ Select this to build for the Glacier 460GT board.
+
+config ARCHES
+ bool "Arches"
+ help
+ Select this to build for the Arches dual 460GT board.
+
+endchoice
+