diff -u auto-nng.v1.5.orig/Makefile auto-nng.v1.5/Makefile
--- auto-nng.v1.5.orig/Makefile	2008-03-09 17:38:34.000000000 +0100
+++ auto-nng.v1.5/Makefile	2009-07-28 16:25:58.000000000 +0200
@@ -1,5 +1,5 @@
 auto-nng: auto-nng.c
-	gcc -O3 -o auto-nng auto-nng.c -lm
+	$(CC) $(CFLAGS) -o auto-nng auto-nng.c -lm
 
 test: auto-nng
 	ruby auto-nng-test.rb