How to compile a smart contract via CLI

Overview

This guide provides instructions how to compile a smart contract using the command line interface (CLI).

Before you begin

• You have the source of the contract saved in a local folder, e.g. ./examples/hello/

Procedure

Follow the following steps to compile your contract.

1. Navigate to the hello folder in examples ./examples/hello. You should see the ./src/hello.cpp file.

2. Run the following commands:

   mkdir build
   cd build
   cdt-cpp ../src/hello.cpp -o hello.wasm -I ../include/

   Where:

   • ../src/hello.cpp = Is the input cpp source file to be compiled.
   • -o hello.wasm = It instructs the cdt--cpp tool who to name the output wasm file.
   • -I ../include/ = It tells cdt-cpp tool what the include folder path is, in this particular case it is a relative path.

3. Verify the following two files were generated:

• the compiled binary wasm: hello.wasm,
• and the generated ABI file: hello.abi.

Summary

In conclusion, the above instructions show how to compile a smart contract using the command line interface (CLI).