RapidCheck comes with support for (currently, a very limited set of) common Boost library types. This support is available through the extras/boost module. You can either directly add the extras/boost/include directory to your include path or link against the rapidcheck_boost target in your CMakeLists.txt. You can then simply #include <rapidcheck/boost.h>.
The Boost support is currently very limited so if you feel that you're missing some very essential type, please file an issue. Even better, submit a pull request complete with tests!
The following types currently have Arbitrary specializations:
boost::optional<T>
All the Boost generators are located in the rc::gen::boost namespace.
Equivalent to gen::maybe but for boost::optional<T> instead.
// Example:
const auto optionalSmallInt = *gen::boost::optional(gen::inRange(0, 100));