This is the RISC-V C and C++ cross-compiler.

Note: This repository uses submodules:

$ git clone https://github.com/wezm/riscv-gnu-toolchain.git
$ cd riscv-gnu-toolchain
$ git submodule update --init

Building requires Docker or Podman. Build the docker image with:

docker build -t riscv-nuclei-elf-toolchain -f docker/Dockerfile docker

To build the Newlib cross-compiler, you must have cloned the code and built the docker image as above. Run the build in a container. The result is written to the out directory:

docker run --rm -it -v $(pwd):/src -v $(pwd)/out:/out riscv-nuclei-elf-toolchain docker/build-newlib

You should now be able to use riscv64-unknown-elf-gcc and friends.

The DejaGnu test suite has been ported to RISC-V. This can run with GDB simulator for elf toolchain or Qemu for linux toolchain, and GDB simulator doesn't support floating-point. To test GCC, run the following commands:

./configure --prefix=$RISCV --disable-linux --with-arch=rv64ima # or --with-arch=rv32ima
make newlib
make report-newlib

./configure --prefix=$RISCV
make linux
make report-linux