1 files changed, 4 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index a2fab8f..8e7ea8a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,9 @@
-%.png: %.dot
+%.in: %.dot
+	sed "$(shell sed 's/^#DEFINE \(\S\+\) \(.*\)$$/s@\1@\2@g/; t; d' "$<")" "$<" > "$@"
+
+%.png: %.in
 	dot -Tpng -o$@ $<
 
 all: graph.png
 
 .PHONY: all
-