[BUILD] Error when I try to build the project

```bash
cmake ..
-- The CXX compiler identification is unknown
CMake Error at examples/tcp/CMakeLists.txt:2 (project):
No CMAKE_CXX_COMPILER could be found.

Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.

-- Configuring incomplete, errors occurred!
See also "/home/alunoifpe/Dpubsub/build/CMakeFiles/CMakeOutput.log".
See also "/home/alunoifpe/Dpubsub/build/CMakeFiles/CMakeError.log".
```

Is important to create bash to add the necessary deps(ubuntu):

```bash
sudo apt-get update && sudo apt-get install build-essential
```