don't bother generating dependency information:
 - we don't use/care because we aren't doing rebuilds
 - it uses the -Wp flag which is gcc specific for no good reason

upstream has rewritten things to use autotools, so this will go away
once they release another version

--- a/Make.rules
+++ b/Make.rules
@@ -23,10 +23,10 @@ LIB_RELEASE = 0
 # And last various rules
 
 %.o: %.c
-	$(CC) -Wp,-MMD,"$*.d",-MQ,"$@",-MP -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
 
 %.o: %.cpp
-	$(CXX) -Wp,-MMD,"$*.d",-MQ,"$@",-MP -c $(CPPFLAGS) $(CXXFLAGS) -o $@ $<
+	$(CXX) -c $(CPPFLAGS) $(CXXFLAGS) -o $@ $<
 
 %.so:
 	$(CC) -shared $(LDFLAGS) -Wl,-soname,$@.$(LIB_RELEASE) -o $@.$(LIB_RELEASE) $^ $(LIBS_$*)