XRPL Hooks compiler

This repository contains build scripts for the docker image with Hooks C compiler and Language Server, git submodules of the projects actually going into the image and their web API.

Getting Started

Running make in this directory after checkout should produce the image, but

1. It must be run as root (or at least an account privileged enough to build & run docker containers), and

2. checking out the submodules as root writes files into the .git directory that non-priviledged users cannot update,

so it's recommended to split the build into 2 steps:

$ make checkout

# make build

The final container is called xrpl-hooks-compiler and can be run by the run target of Makefile in the docker directory.

Shortcuts

Building LLVM (twice - the current setup shares LLVM repo but not the build directory between clang & clangd) takes hours, and might not even work on computers with less than 8GB of memory (16GB is better), so the LLVM binaries are maintained in releases of xrpl-hooks-compiler. These binaries can be extracted from the file bin.zip in the top-level directory, providing the results of running make in clang-build, clangd-build and cleaner-build directories, so that running the top-level make build target can be replaced by running just the (default) make build target in the docker directory. This also allows skipping the checkout of the llvm-project, wasi-sdk and hook-cleaner-c submodules.

API Wrapper or c2wasm-api

This project includes node.js endpoint where you can send c files and it will return compiled binary as a response. Development of this api happens under c2wasm-api folder. c2wasm-api folder contains README.md which has further information about the project.

Developing c2wasm-api without building all the binaries

Make sure you have Docker installed. Clone this project. Download latest bin.zip file from the releases of this GitHub repository, put it project root and unzip:

unzip bin.zip

• CD to docker folder cd docker
• Run make c2wasm-api && make clangd && make wasi-sdk && make hook-cleaner
• Run docker-compose build
• Run docker-compose up or docker-compose up -d
• This should start server at port :9000, the actual compiling endpoint is this: http://localhost:9000/api/build. Note that it takes a while to start.