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

Binutils

The GNU Binutils are a collection of binary tools (GNU linker, GNU assembler, many other excellent tools such as gprof).

RISC-V maintainers

Andrew Waterman (SiFive)
Palmer Dabbelt (Google)
Jim Wilson (SiFive)
Nelson Chu (SiFive)

Releases

Rule of thumb: Binutils (GNU linker, GNU assembler, tons of other excellent tools) releases twice per year (mid July and mid January).

Binutils 2.35 schedule:
- Binutils 2.35 (2020-07-24)
- Binutils 2.35.1 (2020-09-19)
- Binutils 2.35.2 (2021-01-30)
Binutils 2.36 schedule:
- Binutils 2.36 (2021-01-24)

RISC-V status

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

GCC

The GNU Compiler Collection (GCC) includes front ends for C, C , Objective-C, Fortran, Ada, Go, and D, as well as libraries for these languages (e.g. libstdc).

RISC-V maintainers

Andrew Waterman (SiFive)
Palmer Dabbelt (Google)
Jim Wilson (SiFive)
Kito Cheng (SiFive)

GCC RISC-V community meetings

Schedule: biweekly, Thursday 7 am (PST), starting on Mar 11, 2021
Organized by Wei Wu (PLCT)
Public announcement: https://www.mail-archive.com/gcc@gcc.gnu.org/msg94197.html

Releases

Rule of thumb: GCC closes the merge window for the next release in mid-November (once per year).

GCC 11 schedule
- GCC 11 Stage 1 (starts 2020-04-30)
- GCC 11 Stage 3 (starts 2020-11-16)
- GCC 11 Stage 4 (starts 2021-01-17)
- GCC 11.1 release (not defined; possibly May/June)

After stage 3 has started, new functionality may not be introduced.

The upstream release schedule can be found here.

The upstream release timeline can be found here.

RISC-V status

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

GDB

GDB is the GNU Project debugger.

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.

Glibc

Glibc is the GNU C library.

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.

LLVM

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

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.

Newlib

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

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.