Installing Solidity


If you just want to try Solidity for small contracts, you can try browser-solidity which does not need any installation. If you want to use it without connection to the Internet, you can also just save the page locally or clone

NPM / node.js

This is probably the most portable and most convenient way to install Solidity locally.

A platform-independent JavaScript library is provided by compiling the C++ source into JavaScript using Emscripten for browser-solidity and there is also an NPM package available.

To install it, simply use

npm install solc

Details about the usage of the nodejs package can be found in the repository.

Binary Packages

Binary packages of Solidity together with its IDE Mix are available through the C++ bundle of Ethereum.

Building from Source

Building Solidity is quite similar on MacOS X, Ubuntu and probably other Unices. This guide starts explaining how to install the dependencies for each platform and then shows how to build Solidity itself.



  • OS X Yosemite (10.10.5)
  • Homebrew
  • Xcode

Set up Homebrew:

brew update
brew install boost --c++11             # this takes a while
brew install cmake cryptopp miniupnpc leveldb gmp libmicrohttpd libjson-rpc-cpp
# For Mix IDE and Alethzero only
brew install xz d-bus
brew install llvm --HEAD --with-clang
brew install qt5 --with-d-bus          # add --verbose if long waits with a stale screen drive you crazy as well


Below are the build instructions for the latest versions of Ubuntu. The best supported platform as of December 2014 is Ubuntu 14.04, 64 bit, with at least 2 GB RAM. All our tests are done with this version. Community contributions for other versions are welcome!

Install dependencies:

Before you can build the source, you need several tools and dependencies for the application to get started.

First, update your repositories. Not all packages are provided in the main Ubuntu repository, those you’ll get from the Ethereum PPA and the LLVM archive.


Ubuntu 14.04 users, you’ll need the latest version of cmake. For this, use: sudo apt-add-repository ppa:george-edison55/cmake-3.x

Now add all the rest:

sudo apt-get -y update
sudo apt-get -y install language-pack-en-base
sudo dpkg-reconfigure locales
sudo apt-get -y install software-properties-common
sudo add-apt-repository -y ppa:ethereum/ethereum
sudo add-apt-repository -y ppa:ethereum/ethereum-dev
sudo apt-get -y update
sudo apt-get -y upgrade

For Ubuntu 15.04 (Vivid Vervet) or older, use the following command to add the develop packages:

sudo apt-get -y install build-essential git cmake libboost-all-dev libgmp-dev libleveldb-dev libminiupnpc-dev libreadline-dev libncurses5-dev libcurl4-openssl-dev libcryptopp-dev libjson-rpc-cpp-dev libmicrohttpd-dev libjsoncpp-dev libedit-dev libz-dev

For Ubuntu 15.10 (Wily Werewolf) or newer, use the following command instead:

sudo apt-get -y install build-essential git cmake libboost-all-dev libgmp-dev libleveldb-dev libminiupnpc-dev libreadline-dev libncurses5-dev libcurl4-openssl-dev libcryptopp-dev libjsonrpccpp-dev libmicrohttpd-dev libjsoncpp-dev libedit-dev libz-dev

The reason for the change is that libjsonrpccpp-dev is available in the universe repository for newer versions of Ubuntu.


Run this if you plan on installing Solidity only, ignore errors at the end as they relate only to Alethzero and Mix

git clone --recursive
cd webthree-umbrella
./webthree-helpers/scripts/ --no-push --simple-pull --project solidity # update Solidity repo
./webthree-helpers/scripts/ --no-git --project solidity --all --cores 4 -DEVMJIT=0 # build Solidity and others
                                                                            #enabling DEVMJIT on OS X will not build
                                                                            #feel free to enable it on Linux

If you opted to install Alethzero and Mix:

git clone --recursive
cd webthree-umbrella && mkdir -p build && cd build
cmake ..

If you want to help developing Solidity, you should fork Solidity and add your personal fork as a second remote:

cd webthree-umbrella/solidity
git remote add personal

Note that webthree-umbrella uses submodules, so solidity is its own git repository, but its settings are not stored in .git/config, but in webthree-umbrella/.git/modules/solidity/config.