setup multiarch and build .a and .so files

debian/rules

@@ -9,5 +9,12 @@
 # Uncomment this to turn on verbose mode.
 #export DH_VERBOSE=1
 
+DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
+
 %:
 	dh $@ 
+
+build:
+	dh build
+	make package
+	make library