# Testing / `cxxtest` C++ STL This is a test of the C++ standard library. At present a port of the uClibc++ C++ library is available. Due to licensing issues, the uClibc++ C++ library is not included in the NuttX source tree by default, but must be installed (see the `README.txt` file in the uClibc++ download package for installation). The uClibc++ test includes simple test of: - iostreams, - STL, - RTTI, and - Exceptions ## Example Configuration Options - `CONFIG_TESTING_CXXTEST=y` – Enables the example ## Other Required Configuration Settings Other NuttX setting that are required include: - `CONFIG_HAVE_CXX=y` - `CONFIG_HAVE_CXXINITIALIZE=y` - `CONFIG_UCLIBCXX=y` or `CONFIG_LIBCXX=y` Additional `uClibc++/libcxx` settings may be required in your build environment.