EOSIO.CDT is a toolchain for WebAssembly (WASM) and a set of tools to facilitate smart contract development for the EOSIO platform. In addition to being a general purpose WebAssembly toolchain, EOSIO specific optimizations are available to support building EOSIO smart contracts. This new toolchain is built around Clang 9, which means that EOSIO.CDT has the most currently available optimizations and analyses from LLVM, but as the WASM target is still considered experimental, some optimizations are incomplete or not available.

As of this release two new repositories are under the suite of tools provided by EOSIO.CDT. These are the Ricardian Template Toolkit and the Ricardian Specification. The Ricardian Template Toolkit is a set of libraries to facilitate smart contract writers in crafting their Ricardian contracts. The Ricardian specification is the working specification for the above mentioned toolkit. Please note that both projects are alpha releases and are subject to change.

• Please see the Upgrading Guide 1.2 to 1.3 and Upgrading Guide 1.5 to 1.6 to be aware of any breaking changes.
• There is currently a known issue that a minimum of 2 CPU cores is required for using EOSIO.CDT

EOSIO.CDT currently supports Mac OS X brew, Linux x86_64 Debian packages, and Linux x86_64 RPM packages.

If you have previously installed EOSIO.CDT, run the uninstall script (it is in the directory where you cloned EOSIO.CDT) before downloading and using the binary releases.

brew tap eosio/eosio.cdt
brew install eosio.cdt

brew remove eosio.cdt

wget https://github.com/eosio/eosio.cdt/releases/download/v1.8.1/eosio.cdt_1.8.1-1-ubuntu-18.04_amd64.deb
sudo apt install ./eosio.cdt_1.8.1-1-ubuntu-18.04_amd64.deb

sudo apt remove eosio.cdt

wget https://github.com/eosio/eosio.cdt/releases/download/v1.8.1/eosio.cdt-1.8.1-1.el7.x86_64.rpm
sudo yum install ./eosio.cdt-1.8.1-1.el7.x86_64.rpm

sudo yum remove eosio.cdt

git clone --recursive https://github.com/eosio/eosio.cdt
cd eosio.cdt
mkdir build
cd build
cmake ..
make -j8

From here onward you can build your contracts code by simply exporting the build directory to your path, so you don't have to install globally (makes things cleaner). Or you can install globally by running this command:

sudo make install

sudo rm -fr /usr/local/eosio.cdt
sudo rm -fr /usr/local/lib/cmake/eosio.cdt
sudo rm /usr/local/bin/eosio-*

• eosio-cpp
• eosio-cc
• eosio-ld
• eosio-init
• eosio-abidiff
• eosio-wasm2wast
• eosio-wast2wasm
• eosio-ranlib
• eosio-ar
• eosio-objdump
• eosio-readelf

Contributing Guide

Code of Conduct

MIT

See LICENSE for copyright and license terms.

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