This is a quick guide to run libreswan tests using namespaces. Note that the commands below install a lot of development packages. It is recommended to use a user that can use sudo without password ...

I checked github for CXX and this line is there and of course gets installed at line 1683 when built. I actually pulled the tag 15.2.0 and it does have the line reported above in the same line number.

Abstract: We propose a hybrid centralized-distributed radio resource management (RRM) scheme for cellular vehicle-to-everything (C-V2X), which is to mitigate the interference caused by radio resource ...