updated readme C++ ins

examples/quickstart-cpp/README.md

@@ -48,6 +48,9 @@ quickstart-cpp
 
 ### Install dependencies and project
 
+> [!NOTE]
+> Building the C++ components currently only works in Ubuntu 22.
+
 In this example, `SuperLink` and `ServerApp` use Flower's Python package, while the `SuperNodes` are C++ executables. We therefore need: (1) a Python environment with Flower installed; and (2) to build the `SuperNode` binaries.
 
 1. **Prepare for `SuperLink` and `ServerApp`**
@@ -60,7 +63,13 @@ In this example, `SuperLink` and `ServerApp` use Flower's Python package, while
 
 2. **Build the `SuperNode` executables**
 
-   Ensure you have [CMake installed](https://cliutils.gitlab.io/modern-cmake/chapters/intro/installing.html) in your system. Then, build the binaries:
+   Ensure you have `CMake` and other build tools installed in your system. 
+
+   ```shell
+   sudo apt-get install -y clang-format cmake g++ clang-tidy cppcheck
+   ```
+
+   Then, build the binaries:
 
    ```bash
    cmake -S . -B build