llama@llama-Satellite-E55-A:~/Code/cpp/caveman-duels/players/Darwin$ gcc Darwin.c -oDarwin -w -O3
Darwin.c:87:8: error: conflicting types for ‘random’
 double random() { return (double)rand() / RAND_MAX; }
        ^
In file included from Darwin.c:2:0:
/usr/include/stdlib.h:321:17: note: previous declaration of ‘random’ was here
 extern long int random (void) __THROW;
                 ^
Darwin.c: In function ‘tick_count’:
Darwin.c:115:5: error: unknown type name ‘timeval’
     timeval t;
     ^
Darwin.c:117:20: error: request for member ‘tv_sec’ in something not a structure or union
     return 1000 * t.tv_sec + t.tv_usec / 1000;
                    ^
Darwin.c:117:31: error: request for member ‘tv_usec’ in something not a structure or union
     return 1000 * t.tv_sec + t.tv_usec / 1000;
                               ^