Wire Contract Development Toolkit (CDT) is a C/C++ toolchain targeting WebAssembly (WASM) and a set of tools to facilitate development of smart contracts written in C/C++ that are meant to be deployed to a Wire blockchain.
The master branch is the latest stable branch.
We currently support the following operating systems.
| Operating Systems |
|---|
| Ubuntu 24.04 Jammy |
In the future, we plan to support downloading Debian packages directly from our release page, providing a more streamlined and convenient setup process. However, for the time being, installation requires building the software from source.
Finally, verify Wire CDT was installed correctly:
cdt-cpp --versionYou should see version information with no errors. For example:
Wire CDT version 4.x.x
Follow the instructions in BUILD.md to build Wire CDT from source.
docs/migrating-from-antelope.md walks through getting started on
Wire and porting an existing contract — the eosio → sysio renames, the KV storage layer that
replaces the legacy db_*_i64 tables, the host functions Wire adds and removes, and the resource
model change that matters most: on Wire the contract is billed for CPU and NET by default
rather than the signer, and RAM follows whichever account the contract names as payer.
Wire CDT supports the following test suites:
| Test Suite | Test Type | Notes |
|---|---|---|
| Unit tests | Unit tests | Fast unit tests covering core functionality |
| Integration tests | Integration | Tests requiring Wire Sysio build; optional but recommended if developing contracts |
When building from source, we recommend running at least the unit tests.
The unit test suite consists of tests that verify core CDT functionality without external dependencies.
You can invoke them by running ctest from a terminal in your build directory:
ctestThe integration test suite requires a built version of Wire Sysio and tests contract compilation and execution end-to-end.
To build and run integration tests, you must first build Wire Sysio from source and set the sysio_DIR environment variable before configuring the CDT build. You also need to pass ENABLE_INTEGRATION_TESTS=ON to cmake. See BUILD.md for detailed instructions.
You can invoke them by running ctest from a terminal in your integration tests directory:
cd build/tests/integration
ctest |
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