+ if [ -f "$cross/setenv.sh" ]
+ then
+ . "$cross/setenv.sh"
+ cp $cross/setenv.sh debian/setenv.sh
+ fi
+ if [ -z "$ARCH" ]
+ then
+ # determine architecture
+ GNU_ARCH=${cross%-*} # assumed format: DEB_HOST_GNU_TYPE-g++version, e.g. arm-linux-gnueabihf-4.9
+ GNU_ARCH=${GNU_ARCH##*/}
+ arch_opt="-t $GNU_ARCH"
+ fi
+ fi
+
+ if [ -n "$ARCH" ]
+ then
+ arch_opt="-a $ARCH"