Linking #GoLang lib in #Ruby

Readme.md

go build -buildmode=c-shared -o sum.so sum.go
ruby link.rb

link.rb

require 'ffi'

module FfiCustomTest
  extend FFI::Library
  ffi_lib 'c'
  ffi_lib './sum.so'
  attach_function :sum, [:int, :int], :int
end

puts FfiCustomTest.sum(1, 2)

sum.go

package main

import "C"

//export sum
func sum(a, b int) int {
	return a + b
}

func main() {}