Gem #130: Type-Safe Database API -- Part 2

When you compile GNATColl, it automatically detects whether any of the supported DBMS are installed on your system and optionally compiles the support for them. But, of course, when you link your application with GNATColl you do not want to systematically depend on every DBMS that is recognized by GNATColl (for instance both PostgreSQL and SQLite), just the one you actually need. Using project files, you can let the linker know which DBMS you need. Here is an example of a project file that adds support for SQLite: