sys/time.h for struct timeval
@ -22,6 +22,7 @@ in the source distribution for its full text.
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>