xPack GNU RISC-V Embedded GCC v10.1.0-1.2 released
The xPack GNU RISC-V Embedded GCC is a standalone cross-platform binary distribution of the SiFive RISC-V GCC.
There are separate binaries for Windows (Intel 32/64-bit), macOS (Intel 64-bit) and GNU/Linux (Intel 32/64-bit, Arm 64-bit).
The binary files are available from GitHub Releases.
- Intel GNU/Linux 32/64-bit: any system with GLIBC 2.15 or higher (like Ubuntu 12 or later, Debian 8 or later, RedHat/CentOS 7 later, Fedora 20 or later, etc)
- Arm GNU/Linux 64-bit: any system with GLIBC 2.23 or higher (like Ubuntu 16 or later, Debian 9 or later, RedHat/CentOS 8 or later, Fedora 24 or later, etc); (there is no Arm 32-bit image!);
- Intel Windows 32/64-bit: Windows 7 with the Universal C Runtime (UCRT), Windows 8, Windows 10
- Intel macOS 64-bit: 10.13 or later
The full details of installing the xPack GNU RISC-V Embedded GCC on various platforms are presented in the separate Install page.
The easiest way to install GNU RISC-V Embedded GCC is with
by using the binary xPack, available as
xpm tool available, installing
the latest version of the package and adding it as
a dependency for a project is quite easy:
cd my-project xpm init # Only at first use. xpm install @xpack-dev-tools/riscv-none-embed-gcc@latest ls -l xpacks/.bin
To install this specific version, use:
xpm install @firstname.lastname@example.org
For xPacks aware tools, like the Eclipse Embedded C/C++ plug-ins, it is also possible to install GNU RISC-V Embedded GCC globally, in the user home folder.
xpm install --global @xpack-dev-tools/riscv-none-embed-gcc@latest --verbose
Eclipse will automatically
identify binaries installed with
xpm and provide a convenient method to manage paths.
To remove the links from the current project:
cd my-project xpm uninstall @xpack-dev-tools/riscv-none-embed-gcc
To completely remove the package from the global store:
xpm uninstall --global @xpack-dev-tools/riscv-none-embed-gcc
The xPack GNU RISC-V Embedded GCC generally follows the official SiFive RISC-V GCC Releases, with as little differences as possible.
The current version is based on:
- SiFive RISC-V GCC release v2020.08.0 from December 19, 2020, and includes the SiFive extensions, including the RVV vector support.
There are no functional changes.
Compared to the original SiFive version, the same architecture and API options are supported, and there are minimal functional changes
libglosswas removed from the list of libraries always linked to the application, since it issues
ECALLinstructions that fail in bare metal environments
Support for newlib-nano is available using the
--specs=nano.specs option. For better results, this option must be
added to both compile and link time.
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. The nano version is
-mcmodel=medany, otherwise the link will fail.
Support for Python scripting was added to GDB. This distribution provides
a separate binary,
support for Python 3.7.
The Python 3 run-time is included, so GDB does not need any version of Python to be installed, and is insensitive to the presence of other versions.
Support for Python 2 was discontinued.
Text User Interface (TUI)
Support for TUI was added to GDB. The
ncurses library (v6.2) was added to
- [#10] - due to a problem in the build scripts, the Windows archives did not include the proper multi-lib support, and the list of usable libraries was the default one, smaller than in the other platforms; fixed.
- due to the very large number of instructions added by the vector support (~70K), the compiler sources became too large and it was not possible to build the Arm 32-bit image (#229)
- the archive size got too big for the Windows 32-bit node to handle, and
xpm installmay fail with RangeError: Array buffer allocation failed; the 64-bit systems are not affected.
On all platforms the packages are standalone, and expect only the standard runtime to be present on the host.
All dependencies that are build as shared libraries are copied locally
libexec folder (or in the same folder as the executable for Windows).
On GNU/Linux the binaries are adjusted to use a relative path:
$ readelf -d library.so | grep runpath 0x000000000000001d (RPATH) Library rpath: [$ORIGIN]
In the GNU ld.so search strategy, the
the highest priority, higher than
LD_LIBRARY_PATH, so if this later one
is set in the environment, it should not interfere with the xPack binaries.
Please note that previous versions, up to mid-2020, used
has a priority lower than
LD_LIBRARY_PATH, and does not tolerate setting
it in the environment.
Similarly, on macOS, the binaries are adjusted with
otool to use a
The original documentation is available in the
The binaries for all supported platforms (Windows, macOS and Intel & Arm GNU/Linux) were built using the xPack Build Box (XBB), a set of build environments based on slightly older distributions, that should be compatible with most recent systems.
The scripts used to build this distribution are in:
For the prerequisites and more details on the build procedure, please see the README-MAINTAINER page.
Before publishing, a set of simple tests were performed on an exhaustive set of platforms. The results are available from:
The binaries were tested on a variety of platforms, but mainly to check the integrity of the build, not the compiler functionality.
The SHA-256 hashes for the files are:
b69805483983cf5d3f2f54e8417b29b7eb95dc0981b26bff50cedfa75a7f1d03 xpack-riscv-none-embed-gcc-10.1.0-1.2-darwin-x64.tar.gz addf51c9e73f0869ce6211969f21c51ad42743db86af9d9e0c201118f417d598 xpack-riscv-none-embed-gcc-10.1.0-1.2-linux-arm64.tar.gz 3f8d510a36e7a45ba60702e7fd165159967a8344d5662fe2b82e5e0cf1252f10 xpack-riscv-none-embed-gcc-10.1.0-1.2-linux-ia32.tar.gz c60de8880cea9df207b2df820d37ceab8e02b48783e739c2c8cfe1f2a06fe310 xpack-riscv-none-embed-gcc-10.1.0-1.2-linux-x64.tar.gz 049336b548e33e374a27e1e8c1f63e621fc22b7140a2d5e2f5980dddafb397ed xpack-riscv-none-embed-gcc-10.1.0-1.2-win32-ia32.zip e2c88c768d0ef82265bb4a2dc59c80ae6f01788080f7999afbaa415103744e62 xpack-riscv-none-embed-gcc-10.1.0-1.2-win32-x64.zip
Support for 32-bit Intel Linux and Intel Windows will most probably be dropped in 2022. Support for 32-bit Arm Linux will be preserved for a while, due to the large user base of 32-bit Raspberry Pi systems.
Linux minimum requirements
Support for RedHat 7 will most probably be dropped in 2022, and the minimum requirement will be raised to GLIBC 2.27, available starting with Ubuntu 18 and RedHat 8.
- GitHub xpack-dev-tools/riscv-none-embed-gcc-xpack
- this release
- all xPack releases
- all GNU MCU Eclipse releases
- individual file counters (grouped per release)
- npmjs.com @xpack-dev-tools/riscv-none-embed-gcc
Credit to Shields IO for the badges and to Somsubhra/github-release-stats for the individual file counters.