# define WARNING(format, ...) wimlib_warning(T(format), ## __VA_ARGS__)
# define WARNING_WITH_ERRNO(format, ...) wimlib_warning_with_errno(T(format), ## __VA_ARGS__)
extern bool wimlib_print_errors;
+extern FILE *wimlib_error_file;
#else /* ENABLE_ERROR_MESSAGES */
# define wimlib_print_errors 0
+# define wimlib_error_file NULL
# define ERROR(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__)
# define ERROR_WITH_ERRNO(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__)
# define WARNING(format, ...) dummy_tprintf(T(format), ## __VA_ARGS__)