they don’t work as intended, see debug.h:
#ifndef DEBUG_H_
#define DEBUG_H_
#include <stdio.h>
#ifdef ENABLE_DEBUG
#define DEBUG(...) printf(__VA_ARGS__)
#else
#define DEBUG(...)
#endif
#endif /* DEGUG_H_ */
they don’t work as intended, see debug.h:
#ifndef DEBUG_H_
#define DEBUG_H_
#include <stdio.h>
#ifdef ENABLE_DEBUG
#define DEBUG(...) printf(__VA_ARGS__)
#else
#define DEBUG(...)
#endif
#endif /* DEGUG_H_ */