diff -r b907d8059290 -r 62f1a55535e7 ui/gtk/Makefile
--- a/ui/gtk/Makefile	Fri Nov 09 17:11:12 2018 +0100
+++ b/ui/gtk/Makefile	Mon Feb 04 14:46:11 2019 +0100
@@ -27,7 +27,7 @@
 #
 
 $(GTK_OBJPRE)%.o: gtk/%.c
-	$(CC) -o $@ -c $(CFLAGS) $<
+	$(CC) -o $@ -c $(CFLAGS) $(TK_CFLAGS) $<
 	
 $(UI_LIB): $(OBJ)
 	$(AR) $(ARFLAGS) $(UI_LIB) $(OBJ)