Index: xen-4.6.0-testing/tools/Makefile
===================================================================
--- xen-4.6.0-testing.orig/tools/Makefile
+++ xen-4.6.0-testing/tools/Makefile
@@ -259,6 +259,7 @@ subdir-all-qemu-xen-dir: qemu-xen-dir-fi
 		--datadir=$(SHAREDIR)/qemu-xen \
 		--localstatedir=$(localstatedir) \
 		--disable-kvm \
+		$(QEMU_XEN_ENABLE_SPICE) \
 		--disable-docs \
 		--disable-guest-agent \
 		--python=$(PYTHON) \