ARC GNU Compiler Toolchain 
This is the ARC C and C++ cross-compiler, based on the RISC-V scripts. It supports two build modes: a generic ELF/Newlib toolchain.
Getting the sources
This repository uses submodules. You need the --recursive option to fetch the submodules automatically
$ git clone --recursive https://github.com/claziss/arc-gnu-toolchain
Alternatively :
$ git clone https://github.com/claziss/arc-gnu-toolchain
$ cd src-gnu-toolchain
$ git submodule update --init --recursive
Prerequisites
Several standard packages are needed to build the toolchain. On Ubuntu, executing the following command should suffice:
$ sudo apt-get install autoconf automake autotools-dev curl libmpc-dev libmpfr-dev libgmp-dev gawk build-essential bison flex texinfo gperf libtool patchutils bc zlib1g-dev
On Fedora/CentOS/RHEL OS, executing the following command should suffice:
$ sudo yum install autoconf automake libmpc-devel mpfr-devel gmp-devel gawk bison flex texinfo patchutils gcc gcc-c++ zlib-devel
On OS X, you can use Homebrew to install the dependencies:
$ brew install gawk gnu-sed gmp mpfr libmpc isl zlib
This process will start by downloading about 200 MiB of upstream sources, then will patch, build, and install the toolchain. If a local cache of the upstream sources exists in $(DISTDIR), it will be used; the default location is /var/cache/distfiles. Your computer will need about 8 GiB of disk space to complete the process.
Installation (Newlib)
To build the Newlib cross-compiler, pick an install path. If you choose,
say, /opt/arc, then add /opt/arc/bin to your PATH now. Then, simply
run the following command:
./configure --prefix=/opt/arc
make
You should now be able to use arc-gcc and its cousins.
Advanced Options
There are a number of additional options that may be passed to configure. See './configure --help' for more details.
Test Suite
To test GCC, run the following commands:
./configure --prefix=$ARC --disable-linux
make newlib
make check-gcc-newlib