/in/hotel-db.c:1:0: error: ISO C forbids an empty translation unit [-Werror=pedantic]
cc1: all warnings being treated as errors
In file included from /in/hotel-ll.c:3:0:
/in/hotel-ll.h:1:14: error: extra tokens at end of #ifndef directive [-Werror]
 #ifndef HOTEL-LL_H_INCLUDED
              ^
/in/hotel-ll.h:2:14: error: ISO C99 requires whitespace after the macro name [-Werror]
 #define HOTEL-LL_H_INCLUDED
              ^
cc1: all warnings being treated as errors