HANA precompiler and native libraries

Hi,

I'm a HANA newbie and I'm wondering about HANA database connection options. Our scenario is a legacy OLTP Linux COBOL system so we would like to use HANA native libraries and a precompiler to minimize the change impact in our application. I know there are methods like JDBC, ODBC, ODBO and SQLDBC but this methods may cause major changes in our current code.

I haven't seen any kind of native libraries nor precompiler on HANA documentation. Are JDBC, ODBC, ODBO and SQLDBC the only connection methods available?

If you can help me this would be much apreciated.

Thanks a lot for your support.

Best regards