Actually using [ZLang](https://github.com/pfultz2/ZLang https://github.com/pfultz2/ZLang), you could define them like this: #define IOD_DEFINE_SYMBOL(name)

Actually using [ZLang](https://github.com/pfultz2/ZLang https://github.com/pfultz2/ZLang), you could define them like this: #define IOD_DEFINE_SYMBOL(name) iod_define_symbol(name, _##name) #define IOD_S(name) s::_##name #define ZLANG_iod_define (IOD_DEFINE_SYMBOL) #define ZLANG_iod_s (IOD_S) And then compiling with `-DZLANG_NS=iod` you can call it like this: // Define symbols $(define hello) $(define message) auto hello_api = make_api( // The hello world procedure. $(s hello) = [] () { return D($(s message) = "Hello world."); } ); Also, ZLang can be supported without a need for a dependency on ZLang.