Development
Building Extensions Using Build Flags
To build using extension flags, set the `CORE_EXTENSIONS` flag to the list of extensions that you want to be buiold.  
Extension will in most cases by directly linked the resulting DuckDB executable.  
For example, to build DuckDB with the [`httpfs` extension](#docs:extensions:httpfs:overview), run the following script:  
```bash
GEN=ninja CORE_EXTENSIONS='httpfs' make
```  
#### Special Extension Flags {#docs:dev:building:building_extensions::special-extension-flags}