go-rust

Invoking a Rust library from Go via CGO

Structure

lib/gorules/src contains the Rust source of the library

main.go contains the Go source code

Usage

Easiest way is to use the Makefile

make library will compile the Rust library and copy the .so file to the lib directory

make build will build the Go binary

make all will perform all the above mentioned tasks

make run will execute the binary

make clean will clean the build files

Explanation

Invoking the Rust library is done via CGO.

/*
#cgo LDFLAGS: -L./lib -lgorules
#include "./lib/gorules.h"
*/
import "C"

1. Tell CGO to include the library
2. Include the .h file
3. Import C

Important: The import "C" statement should directly follow after the CGO block. No blank line should be between the block and the statement.