make/common/JavaCompilation.gmk

@@ -156,10 +156,14 @@
     $1_DEPS+=$$(subst \,,$$(foreach src,$$($1_SRCS),$$(addprefix $$(src)/,$$($1_EXTRA_FILES))))
     ifeq (,$$($1_SKIP_METAINF))
       $1_DEPS+=$$(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.
 
   # The capture contents macro finds all files (matching the patterns, typically
   # .class and .prp) that are newer than the jar-file, ie the new content to be put into the jar.