diff -up ddd-3.3.12/ddd/Makefile.am.deps ddd-3.3.12/ddd/Makefile.am
--- ddd-3.3.12/ddd/Makefile.am.deps	2009-02-11 18:25:07.000000000 +0100
+++ ddd-3.3.12/ddd/Makefile.am	2013-01-18 15:08:26.826307263 +0100
@@ -580,7 +580,7 @@ nodist_ddd_SOURCES = \
 
 # Make sure needed headers are built before trying to compile these files
 # (Assume ddd.C is the first source file to be built.)
-ddd.o: version.h host.h root.h
+$(ddd_SOURCES:%.C=%.o): version.h host.h root.h
 resources.o: Ddd.ad.h
 show.o: build.h