crosstyan / Xuantie-800-gcc-elf-newlib-prebuilt

A prebuilt toolchain build with https://github.com/c-sky/toolchain-build

c-sky toolchains built by Crosstyan

You could find x86_64-linux-gnu, mingw, even i686-linux-gnu toolchains in upstream (See also this AUR) However, I could not find any prebuilt for aarch64-linux-gnu (Arm64 Linux) and apple-aarch64-darwin (Arm64 macOS i.e. M1/M2 series) anywhere on the Internet. So I built them by myself.

You could find the prebuilt toolchains in releases.

How to build

If you want to build the toolchains by yourself, here are some tips.

Linux

Pretty straightforward. Just follow c-sky/toolchain-build make sure you have enough disk space (at least 80GB) and RAM (at least 8GB).

git clone https://github.com/c-sky/toolchain-build --recursive --depth=1
# if you miss the --recursive flag
# git submodule update --init
sudo apt-get install autoconf automake autotools-dev curl python3 libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev libexpat-dev
# I would say you should use jobs=$(nproc)-2 if you don't want your computer to freeze
# especially when you are using a desktop environment
./build-csky-gcc.py csky-gcc --src ./ --triple csky-unknown-elf --jobs=-1

When the build is done, you could find the toolchains in build-gcc-csky-unknown-elf/Xuantie-800-gcc-elf-newlib-x86_64. The build script just assumed you are using x86_64 and don't even bother to check your actual architecture. It's just a name anyway.

macOS

You would have to do some modifications to the build script, luckily it has --fake flag.

# redirect the output to `build.sh`
./build-csky-gcc.py csky-gcc --src ./ --triple csky-unknown-elf --jobs=-1 --fake >> build.sh

Then you should modify the build.sh like my build.sh or just copy my build.sh.

A few dependencies are required though.

# use the real gcc instead of the apple clang
# brew install gcc
export CC=gcc-13
export CXX=g++-13

# if binutils from homebrew is installed, uninstall it
brew uninstall binutils

# Building GCC requires GMP 4.2+, MPFR 3.1.0+ and MPC 0.8.0+
brew install gmp mpfr libmpc

Run the build.sh with ./build.sh and wait for a few hours.