[seL4] whether seL4 support c++ code

Hi， I have two questions about whether seL4 support C++:

1. When we create a component, whether the src file of component can be c++ style file like **.cxx, or **.cpp ? I found it will print “camkes.environment.c : undefined reference to run” error when compile

2. If our app code write by c++, how can I use it in seL4 environment as native component？Is there some example ？ Thank you very much.