# pio ci > Build PlatformIO projects with an arbitrary source code structure. > This will create a new temporary project which the source code will be copied into. > More information: . - Build a PlatformIO project in the default system temporary directory and delete it afterwards: `pio ci {{path/to/project}}` - Build a PlatformIO project and specify specific libraries: `pio ci --lib {{path/to/library_directory}} {{path/to/project}}` - Build a PlatformIO project and specify a specific board (`pio boards` lists all of them): `pio ci --board {{board}} {{path/to/project}}` - Build a PlatformIO project in a specific directory: `pio ci --build-dir {{path/to/build_directory}} {{path/to/project}}` - Build a PlatformIO project and don't delete the build directory: `pio ci --keep-build-dir {{path/to/project}}` - Build a PlatformIO project using a specific configuration file: `pio ci --project-conf {{path/to/platformio.ini}}`