libstdc++-11-pic-riscv64-cross - 11.4.0-5cross1 main

This is used to develop subsets of the libstdc++ shared libraries for
use on custom installation floppies and in embedded systems.
.
Unless you are making one of those, you will not need this package.
.
This package contains files for riscv64 architecture, for use in cross-compile
environment.