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Installing Solidity

Browser-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 http://github.com/ethereum/browser-solidity.

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 Node.js package can be found in the solc-js 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.

MacOS X

Requirements:

  • OS X Yosemite (10.10.5)
  • Homebrew
  • Xcode

Set up Homebrew:

brew update
brew upgrade

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 homebrew/versions/v8-315
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

Ubuntu Trusty (14.04)

Below are the instructions to install the minimal dependencies required to compile Solidity on Ubuntu 14.04 (Trusty Tahr).

Note

These dependencies are not enough to compile the GUIs (Alethzero and Mix).

sudo apt-get -y install build-essential git cmake libgmp-dev libboost-all-dev \
    libjsoncpp-dev libleveldb-dev libcurl4-openssl-dev libminiupnpc-dev \
    libmicrohttpd-dev

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 # this will update cmake to version 3.x
sudo apt-get -y install libcryptopp-dev libjson-rpc-cpp-dev

Ubuntu Xenial (16.04)

Below are the instructions to install the minimal dependencies required to compile Solidity on Ubuntu 16.04 (Xenial Xerus).

One of the dependencies (Crypto++ Library, with version >= 5.6.2) can be installed either by adding the Ethereum PPA (Option 1) or by backporting libcrypto++ from Ubuntu Development to Ubuntu Xenial (Option 2).

Note

These dependencies are not enough to compile the GUIs (Alethzero and Mix).

sudo apt-get -y install build-essential git cmake libgmp-dev libboost-all-dev \
    libjsoncpp-dev libleveldb-dev libcurl4-openssl-dev libminiupnpc-dev \
    libjsonrpccpp-dev libmicrohttpd-dev

# (Option 1) For those willing to add the Ethereum PPA:
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
sudo apt-get -y install libcryptopp-dev

## (Option 2) For those willing to backport libcrypto++:
#sudo apt-get -y install ubuntu-dev-tools
#sudo pbuilder create
#mkdir ubuntu
#cd ubuntu
#backportpackage --workdir=. --build --dont-sign libcrypto++
#sudo dpkg -i buildresult/libcrypto++6_*.deb buildresult/libcrypto++-dev_*.deb
#cd ..

Building

Run this if you plan on installing Solidity only:

git clone --recursive https://github.com/ethereum/webthree-umbrella.git
cd webthree-umbrella
./webthree-helpers/scripts/ethupdate.sh --no-push --simple-pull --project solidity # update Solidity repo
./webthree-helpers/scripts/ethbuild.sh --no-git --project solidity --cores 4 -DEVMJIT=0 -DETHASHCL=0 # build Solidity only

If you opted to install Alethzero and Mix:

git clone --recursive https://github.com/ethereum/webthree-umbrella.git
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 [email protected]:username/solidity.git

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.