The package libstdc++-riscv64-unknown-elf 5 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/libstdc++-riscv64-unknown-elf -- More information about libstdc++-riscv64-unknown-elf: https://pkg.kali.org/pkg/libstdc++-riscv64-unknown-elf
