Makefile: move -MMD option out of CFLAGS

Makefile

@@ -11,7 +11,7 @@ VPATH = $(SPATH) $(IPATH) $(DPATH) $(OPATH)
 
 # compiler and compiler flags
 CC = g++
-CFLAGS = -MMD -I$(IPATH) -pthread -lrt
+CFLAGS = -I$(IPATH) -pthread -lrt
 
 # list of object files
 SOURCES = $(wildcard $(SPATH)/*.cpp)
@@ -39,7 +39,7 @@ $(DPATH) $(OPATH):
 	$(CC) $(CFLAGS) -o $@ $^
 # Make the object and dependency files
 $(OPATH)/%.o: $(SPATH)/%.cpp
-	$(CC) $(CFLAGS) -MF $(DPATH)/$(@F:.o=.d) -o $@ -c $<
+	$(CC) $(CFLAGS) -MMD -MF $(DPATH)/$(@F:.o=.d) -o $@ -c $<
 
 # Don't autodelete object files:
 .SECONDARY: $(OPATH)/%.o