This page gives an overview of upstream projects. If you miss information or find mistakes, please edit.

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GHC

The Glasgow Haskell Compiler (GHC) is an open-source compiler for the programming language Haskell.

• GHC homepage

RISC-V status

GHC does not support RISC-V, but there are people working on it. The porting attempts are tracked here:

• https://gitlab.haskell.org/ghc/ghc/-/issues/16783

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Go

Go is a programming language designed for simplicity, reliability and efficiency.

• Go Homepage

RISC-V status

RISC-V support has been mainlined with Go 1.14.

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GDB

GDB is the GNU Project debugger.

• GDB Homepage
• Source Release Page

RISC-V maintainers

• Andrew Burgess (Embecosm)
• Palmer Dabbelt (Google)

Releases

GDB major releases are approximately annually. There are typically one or two minor releases each year. This is the typical schedule:

• major release branch/pre-release approximately 1 month before release
• first minor release ("re-spin") approximately 3 months after major release

At the time of writing the most recent release was 10.1, released on 2020-10-24. Dates for branching (and hence release) of GDB 11 have yet to be announced.

RISC-V status

Debugging works on top of PTRACE syscalls. HW-Breakpoint or HW-Watchpoint support is missing.

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Glibc

Glibc is the GNU C library.

• Glibc Homepage
• Source Release Page

RISC-V maintainers

• Palmer Dabbelt (Google)
• Andrew Waterman (SiFive)
• DJ Delorie (Red Hat)
• Darius Rad(Bluespec)

Releases

Rule of thumb: Glibc releases twice per year (February and August).

Previous releases:

• glibc 2.32 (2020-08-05)
• glibc 2.33 (2021-02-01)
• glibc 2.34 (2021-08-01)

RISC-V status

RV32 and RV64 are supported. Still, there is optimization and completeness potential.

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LLVM

The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.

• LLVM Homepage
• Source Release Page

RISC-V maintainer

• Alex Bradbury (lowRISC)

LLVM RISC-V meetings

• Schedule: biweekly, Thursday 8 am (PST), since Sept 2019
• Organized by Alex Bradbury (lowRISC) and Ana Pazos (Qualcomm)
• Public announcement: https://lists.llvm.org/pipermail/llvm-dev/2021-February/148345.html

Releases

• LLVM 12 schedule
  • LLVM 12.0.0 RC1 (branching) (2021-01-26)
  • LLVM 12.0.0 RC2 (2021-02-23)
  • LLVM 12.0.0 final (2021-03-02)

The upstream release page can be found here.

RISC-V status

RV32G and RV64G are mostly implemented. However, there is still some optimization potential.

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Newlib

Newlib is a C standard library implementation intended for use on embedded systems.

• Newlib Homepage
• Source Release Page

RISC-V maintainer

• Kito Cheng (SiFive)

Releases

Rule of thumb: Newlib releases once per year.

Last releases:

• Newlib 3.3.0 (2020-01-22)
• Newlib 4.0.0 (2020-11-17)
• Newlib 4.1.0 (2020-12-18)

RISC-V status

RV32 and RV64 are supported. Still, there is optimization and completeness potential.