--- a/make/common/JavaCompilation.gmk	Tue Mar 11 12:04:50 2014 +0100
+++ b/make/common/JavaCompilation.gmk	Thu Mar 13 17:18:11 2014 +0100
@@ -158,6 +158,10 @@
       $1_DEPS+=$$(call CacheFind,$$(wildcard $$(addsuffix /META-INF,$$($1_SRCS))))
     endif
   endif
+  # The dependency list should never be empty
+  ifeq ($$(strip $$($1_DEPS)), )
+    $$(warning No dependencies found for $1)
+  endif
 
   # Utility macros, to make the shell script receipt somewhat easier to decipher.