GNU MCU Eclipse RISC-V Embedded GCC v8.2.0-2.1 20190425 released

Version 8.2.0-2.1-20190425 is a maintenance release of GNU MCU Eclipse RISC-V Embedded GCC.

Download

The binary files are available from GitHub Releases.

Compliance

Starting with v8.2.0-2, this distribution closely follows the official SiFive Freedom Tools distribution.

This release is similar to the SiFive 2019-02 release, including support for SiFive specific CLIC interrupts.

The following commits were used:

• the sifive/riscv-gcc project, branch sifive-gcc-8.2.0, commit 242abcaff6 from from 5 April 2019
• the sifive/riscv-binutils-gdb project, branch sifive-binutils-2.32, commit 164267155c from 28 February 2019
• the sifive/riscv-newlib project, commit 42c2e3fb9f from 17 November 2018

GDB was upstreamed and does not require SiFive specific patches, so the current build uses git://sourceware.org/git/binutils-gdb.git, the c8aa0bb commit from 28 Feb 2019.

Improvements

All architectures, ABIs and libraries supported by the riscv64-unknown-elf toolchain are also supported, with the following improvements:

• a newer newlib was included, which supports the 'underscore' syscall functions
• the mandatory reference to libgloss in the linker configuration was removed
• the march=rv32imaf/mabi=ilp32f library was added to the list of multi-libs
• support for newlib-nano was added
• the standard documentation, in PDF and HTML, was added

Binaries

Binaries for Windows, macOS and GNU/Linux are provided.

The GNU/Linux binaries were built on two CentOS 6 Docker images (32/64-bit), and run on any distribution based on CentOS 6 or later.

The Windows binaries were built with mingw-w64, and run on any reasonably recent i686 and x86_64 Windows machines.

Instructions on how to install the binaries are available in the project README.

The toolchain is also available as an xPack and can be conveniently installed with xpm:

xpm install --global @gnu-mcu-eclipse/riscv-none-gcc

This installs the latest available version.

For better control and repeatability, the build scripts use Docker containers; all files required during builds are available as a separate gnu-mcu-eclipse/riscv-none-gcc-build project.

Known problems

• on macOS, the riscv-none-embed-gdb program fails when certain commands are used; this is a known GDB build problem, and will be fixed in the next release.

Checksums

The SHA-256 hashes for the files are:

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