emul/hw/(ti|sms): fix compilation with gcc

It seems to be picky about where it accepts its link flags.

emul/hw/sms/Makefile

@@ -2,12 +2,13 @@ EXTOBJS = ../../emul.o ../../libz80/libz80.o
 OBJS = sms.o vdp.o
 TARGET = sms
 CFLAGS += `pkg-config --cflags xcb`
+LDFLAGS += `pkg-config --libs xcb`
 
 .PHONY: all
 all: $(TARGET)
 
 $(TARGET): $(OBJS) $(EXTOBJS)
-	$(CC) `pkg-config --libs xcb` $(OBJS) $(EXTOBJS) -o $@
+	$(CC) $(OBJS) $(EXTOBJS) -o $@ $(LDFLAGS)
 
 .PHONY: clean
 clean:

emul/hw/sms/sms.c

@@ -65,7 +65,7 @@ void create_window()
         win,
         screen->root,
         0, 0,
-        150, 150,
+        500, 500,
         10,
         XCB_WINDOW_CLASS_INPUT_OUTPUT,
         screen->root_visual,

emul/hw/ti/Makefile

@@ -2,12 +2,13 @@ EXTOBJS = ../../emul.o ../../libz80/libz80.o
 OBJS = ti84.o t6a04.o kbd.o 
 TARGET = ti84
 CFLAGS += `pkg-config --cflags xcb`
+LDFLAGS += `pkg-config --libs xcb`
 
 .PHONY: all
 all: $(TARGET)
 
 $(TARGET): $(OBJS) $(EXTOBJS)
-	$(CC) `pkg-config --libs xcb` $(OBJS) $(EXTOBJS) -o $@
+	$(CC) $(OBJS) $(EXTOBJS) -o $@ $(LDFLAGS)
 
 .PHONY: clean
 clean:

emul/hw/ti/ti84.c

@@ -160,7 +160,7 @@ void create_window()
         win,
         screen->root,
         0, 0,
-        150, 150,
+        500, 500,
         10,
         XCB_WINDOW_CLASS_INPUT_OUTPUT,
         screen->root_visual,