../../libstore/argp.c:172:11: error: conflicting types for 'open'
  error_t open (char *name, struct store **store)
          ^
/usr/include/fcntl.h:149:24: note: previous declaration is here
extern int __REDIRECT (open, (const char *__file, int __oflag, ...), open64)
                       ^
/usr/include/i386-gnu/sys/cdefs.h:187:41: note: expanded from macro '__REDIRECT'
# define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME (#alias))
                                        ^
../../libstore/argp.c:172:50: error: expected ';' at end of declaration
  error_t open (char *name, struct store **store)
                                                 ^
                                                 ;
../../libstore/argp.c:196:3: error: expected expression
  else if (num == 0)
  ^
../../libstore/argp.c:198:3: error: expected expression
  else
  ^
4 errors generated.