add picconf.h

include/picconf.h

@@ -0,0 +1,13 @@
+#ifndef PICCONF_H__
+#define PICCONF_H__
+
+#define DEBUG 1
+
+#if DEBUG
+# define GC_DEBUG 1
+# define VM_DEBUG 1
+#endif
+
+
+#endif
+

include/picrin.h

@@ -4,6 +4,7 @@
 #include <stddef.h>
 #include <stdbool.h>
 
+#include "picconf.h"
 #include "picrin/value.h"
 
 struct pic_env {