Need to explicitly add opencl support to build.

debian/changelog

@@ -1,3 +1,9 @@
+bfgminer (3.6.0-1precise1) precise; urgency=medium
+
+  * Explicitly added OpenCL to Debian build rules.
+
+ -- graeme <graeme@sudo.ca>  Thu, 21 Nov 2013 10:19:10 -0800
+
 bfgminer (3.6.0-0precise1) precise; urgency=low
 
   * klondike: New driver, just imported from cgminer mostly as-is for now.

debian/rules

@@ -5,7 +5,7 @@
 
 override_dh_auto_configure:
 	NOSUBMODULES=1 ./autogen.sh
-	dh_auto_configure -- --enable-ztex --enable-bitforce --enable-icarus --enable-cpumining --enable-scrypt
+	dh_auto_configure -- --enable-ztex --enable-bitforce --enable-icarus --enable-cpumining --enable-scrypt --enable-opencl
 
 override_dh_auto_install:
 	$(MAKE) DESTDIR=$(CURDIR)/debian/bfgminer install