Developer information

This page contains information on rv8 git repositories and the rv8 developer mailing list.

rv8 git repositories

rv8 mailing list

To post a message to the list members, send email to:

To subscribe to the mailing list, send email to:

To visit the mailing list information page follow this link:

rv8 quick start

Building riscv-gnu-toolchain

$ sudo apt-get install autoconf automake autotools-dev curl \
  libmpc-dev libmpfr-dev libgmp-dev gawk build-essential \
  bison flex texinfo gperf libtool patchutils bc zlib1g-dev
$ git clone
$ cd riscv-gnu-toolchain
$ git submodule update --init --recursive
$ ./configure --prefix=/opt/riscv/toolchain
$ make

rv8 has minimal external dependencies besides a C++14 compiler, the C/C++ standard libraries and the asmjit submodule.

Building rv8

$ git clone
$ cd rv8
$ git submodule update --init --recursive
$ make
$ sudo make install

Running rv8

The riscv64-unknown-elf newlib toolchain is required for building the rv8 test cases and this build step depends on the RISCV environment variable.

$ cd rv8
$ export RISCV=/opt/riscv/toolchain
$ make test-build
$ make test-sim
$ make test-sys
$ rv-jit build/riscv64-unknown-elf/bin/test-dhrystone

musl libc RISC-V toolchain

The musl-riscv-toolchain project contains a script that downloads and builds a RISC-V cross-compiler configured to link again the linux musl C library:

Building musl-riscv-toolchain

The riscv64-linux-musl musl libc toolchain is required to compile and run the benchmarks in the rv8-bench repository.

$ git clone
$ cd musl-riscv-toolchain
$ sh rv64
$ export PATH=$PATH:/opt/riscv/musl-riscv-toolchain-7.2.0-5/bin
$ riscv64-linux-musl-gcc --version
riscv64-linux-musl-gcc (GCC) 7.2.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO