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-rw-r--r--Makefile.common4
1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile.common b/Makefile.common
index 48256bb..adc3ef8 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -50,4 +50,8 @@ ifeq ($(LOAD_FROM_MEMORY_TEST),1)
FLAGS += -DLOAD_FROM_MEMORY_TEST
endif
+ifeq ($(USE_OLD_COLOUR_OPS),1)
+ FLAGS += -DUSE_OLD_COLOUR_OPS
+endif
+
FLAGS += $(DEFS) $(WARNINGS) $(INCFLAGS)