Development
Extension Selection
[Core DuckDB extensions](#docs:extensions:core_extensions) are the ones maintaned by the DuckDB team. These are hosted in the `duckdb` GitHub organization and are served by the `core` extension repository.  
Core extensions can be built as part of DuckDB via the `CORE_EXTENSION` flag, then listing the names of the extensions that are to be built.  
```bash
CORE_EXTENSION='tpcd;httpfs;fts;json;parquet' make
```  
More on this topic at [building duckdb extensions](#docs:dev:building:building_extensions).