#ifndef LOG_H #define LOG_H #include #ifdef __GNUC__ #define _LIFTOFF_ATTRIB_PRINTF(start, end) __attribute__((format(printf, start, end))) #else #define _LIFTOFF_ATTRIB_PRINTF(start, end) #endif void liftoff_log(enum liftoff_log_importance verbosity, const char *format, ...) _LIFTOFF_ATTRIB_PRINTF(2, 3); void liftoff_log_errno(enum liftoff_log_importance verbosity, const char *msg); #endif