This is the GNU MCU Eclipse (formerly GNU ARM Eclipse) version of the RISC-V Embedded GCC toolchain.
This release closely follows the official RISC-V distribution maintained by SiFive.
By the date of this release, the riscv-gcc-7.3.0 branch is not yet
stable, thus the current version is still based on GCC 7.2, using the
following commits:
- the riscv/riscv-gcc project,
branch
riscv-gcc-7.2.0, commit 36e932c from from Jan 16th, 2018 - the riscv/riscv-binutils-gdb
project, branch
riscv-binutils-2.29, commit f60a065 from May 3rd, 2018 - the riscv/riscv-newlib project, commit 1e50b13 from Feb 27th, 2018
Compared to the original RISC-V version, the same architecture and API options are supported, and there are minimal functional changes
- newlib-nano is supported
march=rv32imaf/mabi=ilp32fwas added to the list of multilibs
The only notable addition is support for newlib-nano, using the
--specs=nano.specs option. For better results, this option must be
added to both compile and link time (the next release of the GNU MCU
Eclipse plug-ins will add support for this).
If no syscalls are needed, --specs=nosys.specs can be used at link
time to provide empty implementations for the POSIX system calls.
The libraries are compiled with -O2 -mcmodel=medany.
Another addition compared to the SiFive distribution is the presence of the documentation, including the PDF manuals for all tools.
For issues related to the procedure used to build the GNU MCU Eclipse RISC-V Embedded GCC binaries, please report them via gnu-mcu-eclipse/riscv-none-gcc-build GitHub Issues.
For issues related to the xPack used to install the binaries, please report them via gnu-mcu-eclipse/riscv-none-gcc-xpack GitHub issues.
For issues related to the toolchain functionality (compiler, newlib gdb, etc) please report them via their original RISC-V projects:
For more info and support, please see the GNU MCU Eclipse project pages from:
http://gnu-mcu-eclipse.github.io
Thank you for using GNU MCU Eclipse,
Liviu Ionescu