GNU MCU Eclipse RISC-V Embedded GCC v8.1.0-2-20181019 released

Posted on October 19, 2018 by Liviu Ionescu.

Version v8.1.0-2-20181019 is a maintenance release of GNU MCU Eclipse RISC-V Embedded GCC.

Binary files »

Compliance

This release closely follows the official RISC-V distribution maintained by SiFive.

It is more or less similar to the 20180928 release, except support for SiFive specific CLIC interrupts, which was not included.

The following commits were used:

• the riscv/riscv-gcc project, branch riscv-gcc-8.1.0, commit 3c148a7e6ea from from July 3rd, 2018
• the riscv/riscv-binutils-gdb project, branch riscv-binutils-2.30, commit 0d2fb1b7ff from Aug 11th, 2018
• the riscv/riscv-newlib project, commit 77e11e180 from July 12th, 2018

GDB is a bit special, since it is only partly upstreamed and the RISC-V repos are no longer updated, so the current build uses git://sourceware.org/git/binutils-gdb.git, the 7dd36a6f1c commit from Aug 23rd, 2018 (same as the SiFive release).

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 multilibs
• 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 How to install the RISC-V toolchain? page.

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

• none.

Checksums

The SHA-256 hashes for the files are:

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gnu-mcu-eclipse-riscv-none-gcc-8.1.0-2-20181019-0952-macos.tgz

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gnu-mcu-eclipse-riscv-none-gcc-8.1.0-2-20181019-0952-win32.zip

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gnu-mcu-eclipse-riscv-none-gcc-8.1.0-2-20181019-0952-win64.zip