He says:
Warning: Building for intel with Mac OS X < 10.4 is invalid;
Error: implicit declaration of function;
Warning: sending ‘CCwindowDelegate *’ to parameter of incompatible type ‘id _Nullable’;
Warning: incompatible pointer types sending ‘CFStringRef’ (aka ‘const struct __CFString *’) to parameter of type ‘NSString * _Nonnull’ [-Winconpatible-pointer-types];
Warning: incompatible pointer types sending ‘CFStringRef’ (aka ‘const struct __CFString *’) to parameter of type ‘NSString * _Nonnull’ [-Winconpatible-pointer-types]
Build it on a PowerPC Mac.