What is the recommended toolchain for working with thes riscv32imac ISA? I'm playing around with WCH series of micro-controllers the ch32v203C8T6 at the moment.

 So far as I can tell the GCC xPack is what I've found so far but I've also seen some blogs/repos using the tool-chain for the starfive boards
 as well.

Following along with embedded rust docs I've been trying to set the cc and ar to point to "riscv-none-elf-gcc" and "riscv-none-elf-ar" binaries that I've added to my shells path. This is in the ".cargo/config.toml" file but with the target "riscv32imac-unknown-none-elf" it just hangs after running "cargo build" on the building step. The documentation for the chips themselves and their datasheets only really have register info not much in terms of explaining the toolchain besides to use their online IDE solution.