diff --git a/Makefile b/Makefile
index 62a2033..1722ba5 100644
--- a/Makefile
+++ b/Makefile
@@ -11,7 +11,7 @@
 #  and static compile fails for RH 7.2 and 7.3
 #
 ifeq ($(MAKECMDGOALS),dynamic)
-CFLAGS = -I/usr/X11R6/include    #for RH7.3
+CFLAGS += -I/usr/X11R6/include    #for RH7.3
 # CFLAGS = -I/usr/X11R6/LessTif/Motif1.2/include/ #for RH7.1
 else  #for RH8.0
 CFLAGS = -D_STATIC_
@@ -80,13 +80,13 @@ static: $(OBJS) dlstubs.o
 	$(CC) -static -o mage $(OBJS) dlstubs.o $(LIBS) $(FIN)
 
 dynamic: $(OBJS)
-	$(CC) -o mage $(OBJS) -L/usr/X11R6/lib $(LIBS) -ldl $(FIN)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o mage $(OBJS) -L/usr/X11R6/lib $(LIBS) -ldl $(FIN)
 #	$(CC) -o mage $(OBJS) -L/usr/X11R6/LessTif/Motif1.2/lib $(LIBS) -ldl $(FIN)
 # where RH7.1 needed explicit LessTif and could compile static
 # RH7.3 fails static in all tried cases, but has Xm libraries implicit
 
 debug: $(OBJS)
-	$(CC) -o mage $(OBJS) -L/usr/X11R6/lib $(LIBS) -ldl $(FIN)
+	$(CC) $(CFLAGS) $(LDFLAGS) -o mage $(OBJS) -L/usr/X11R6/lib $(LIBS) -ldl $(FIN)
 
 debugs: $(OBJS) dlstubs.o
 	$(CC) -static -o mage $(OBJS) dlstubs.o $(LIBS) $(FIN)