# with-module

Adds a C++ module interface (`interfaces/Greeter.cppm`) imported by `main.cpp`.

```sh
cd examples/with-module
crafter-build
./bin/greeter-app-x86_64-pc-linux-gnu-native/greeter-app
```

Interfaces are listed by their stem path (relative to `cfg.path`, no `.cppm` extension). The build emits `Greeter.pcm` once and `main_impl.o` consumes it. Touching `interfaces/Greeter.cppm` causes only `main_impl.o` to recompile, not the whole world.