MySQL C++ Connector unresolved external symbol _get_driver_instance

Question

I'm using Connector C++ 1.1.3 on Win 8 with VS 2010 Express.

For my debug build in Linker->General->Additional Library Directories I have: C:\\Program Files\\MySQL\\Connector C++ 1.1.3\\lib\\debug

In Linker->Input I have: mysqlcppconn.lib

I get linker error: Server.obj : error LNK2019: unresolved external symbol _get_driver_instance referenced in function "public: bool __thiscall Server::Init(void)" (?Init@Server@@QAE_NXZ)

I have boost in additional include directorys : C:\\Users\\MyName\\Downloads\\boost_1_55_0\\boost_1_55_0

I would assume get_driver_instance() is defined in the mysqlcppconn.lib.

 #include <cppconn/driver.h>
 #include <cppconn/exception.h>
 #include <cppconn/resultset.h>
 #include <cppconn/statement.h>

 class Server
 {
 private:
    sql::Driver* sqlDriver;
sql::Connection* sqlConn;
 public:
    bool Init();
 };

 bool Server::Init()
 {
    sqlDriver = get_driver_instance();
    return true;
 }

I know there are a bunch of topics on this but nothing I've tried has solved it. I haven't written all the things I've tried down as there are a bunch of things.

Answer 1

I had the same problem and ended up solving it by switching to "Release" instead of "Debug".

Other related problems are solved by this small change. (See Connection Crash in mysql C++ )

I understand that you solved this using Qt library, but I guess this can help for other people that got stuck in the same place.

Edit: I've been doing some research on the mysql site ( http://dev.mysql.com/downloads/connector/cpp/ ) and it clearly states that: One problem that can occur is when the tools you use to build your application are not compatible with the tools used to build the binary versions of MySQL Connector/C++. Ideally, you need to build your application with the same tools that were used to build the MySQL Connector/C++ binaries.

The solution I've found so far is to download the library in source format (not binary) and compile it with the settings I need.