Index: configure
--- configure.orig
+++ configure
@@ -157,10 +157,10 @@ cflags "-std=c99 -I."
 
 # DEBUG
 if [ -z "$DEBUG" ]; then
-    cflags "-O3 -DNDEBUG"
+    cflags "-DNDEBUG"
     status "Debug" "no"
 else
-    cflags "-O1 -g -DDEBUG"
+    cflags "-g -DDEBUG"
     status "Debug" "yes"
 fi