December 15
Hey Y'all,

I'm trying to write a simple utility class to read rows from a SQLite3 database using compile time parameters, but I've run into a weird problem.

https://pastebin.com/eTnbRjEd

If I try to instantiate a Reader class I'm hitting a linker error saying

Error 42: Symbol Undefined _sqlite3_open

But if I change the Reader definition to include a dummy template argument and instantiate it with any dummy type argument, the code compiles ok. Am I missing something?

December 15
15.12.2017 11:49, yes9111 пишет:
> Hey Y'all,
> 
> I'm trying to write a simple utility class to read rows from a SQLite3 database using compile time parameters, but I've run into a weird problem.
> 
> https://pastebin.com/eTnbRjEd
> 
> If I try to instantiate a Reader class I'm hitting a linker error saying
> 
> Error 42: Symbol Undefined _sqlite3_open
> 
> But if I change the Reader definition to include a dummy template argument and instantiate it with any dummy type argument, the code compiles ok. Am I missing something?
> 
It isn't template instantiation error. Undefined symbol means you need link your executable with some library that contains this undefined symbol. In your case you need to link to libsqlite.so (linux) or sqlite.dll (windows).