Eos

Welcome to the EOS source code repository!

Getting Started

The following instructions overview the process of getting the software, building it, and running a simple test network that produces blocks.

Setting up a build/development environment

This project is written primarily in C++14 and uses CMake as its build system. An up-to-date C++ toolchain (such as Clang or GCC) and the latest version of CMake is recommended. At the time of this writing, Nathan uses clang 4.0.0 and CMake 3.8.0.

Installing Dependencies

Eos has the following external dependencies, which must be installed on your system:

• Boost 1.64
• OpenSSL
• LLVM 4.0
• secp256k1-zkp (Cryptonomex branch)

git clone https://github.com/cryptonomex/secp256k1-zkp.git
./autogen.sh
./configure
make
sudo make install

Getting the code

To download all of the code, download Eos and a recursion or two of submodules. The easiest way to get all of this is to do a recursive clone:

git clone https://github.com/eosio/eos --recursive

If a repo is cloned without the --recursive flag, the submodules can be retrieved after the fact by running this command from within the repo:

git submodule update --init --recursive

Configuring and building

To do an in-source build, simply run cmake . from the top level directory. Out-of-source builds are also supported. To override clang's default choice in compiler, add these flags to the CMake command:

-DCMAKE_CXX_COMPILER=/path/to/c++ -DCMAKE_C_COMPILER=/path/to/cc

For a debug build, add -DCMAKE_BUILD_TYPE=Debug. Other common build types include Release and RelWithDebInfo.

After successfully running cmake, simply run make to build everything. To run the test suite after building, run the chain_test executable in the tests folder.

Creating and launching a single-node testnet

After successfully building the project, the eosd binary should be present in the programs/eosd directory. Go ahead and run eosd -- it will probably exit with an error, but if not, close it immediately with Ctrl-C. Note that eosd will have created a directory named data-dir containing the default configuration (config.ini) and some other internals. This default data storage path can be overridden by passing --data-dir /path/to/data to eosd.

Edit the config.ini file, adding the following settings to the defaults already in place:

# Load the testnet genesis state, which creates some initial block producers with the default key
genesis-json = /path/to/eos/source/genesis.json
# Enable production on a stale chain, since a single-node test chain is pretty much always stale
enable-stale-production = true
# Enable block production with the testnet producers
producer-name = inita
producer-name = initb
producer-name = initc
producer-name = initd
producer-name = inite
producer-name = initf
producer-name = initg
producer-name = inith
producer-name = initi
producer-name = initj
producer-name = initk
producer-name = initl
producer-name = initm
producer-name = initn
producer-name = inito
producer-name = initp
producer-name = initq
producer-name = initr
producer-name = inits
producer-name = initt
producer-name = initu
# Load the block producer plugin, so we can produce blocks
plugin = eos::producer_plugin

Now it should be possible to run eosd and see it begin producing blocks. At present, the P2P code is not implemented, so only single-node configurations are possible. When the P2P networking is implemented, this instructions will be updated to show how to create an example multi-node testnet.

Run in docker

So simple and fast operation EOS:

• Docker
• Docker-compose
• Docker-volumes

Build eos images

cd eos/Docker
cp ../genesis.json .
docker build -t eosio/eos .

Start docker

sudo mkdir -p /data/store/eos
docker-compose -f docker-compose.yml up

Done

How to Build LLVM and clang for WASM

By default LLVM and clang do not include the WASM build target, so you will have to build it yourself. Note that following these instructions will create a version of LLVM that can only build WASM targets.

git clone --depth 1 --single-branch --branch release_40 git@github.com:llvm-mirror/llvm.git
cd llvm/tools
git clone --depth 1 --single-branch --branch release_40 git@github.com:llvm-mirror/clang.git
mkdir build
cd build
cmake -G "Unix Makefiles" -DCMAKE_INSTALL_PREFIX=.. -DLLVM_TARGETS_TO_BUILD= -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly -DCMAKE_BUILD_TYPE=Release ../