Golang Importing Packages

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There are two types of libraries: static libraries (. A,. lib) and dynamic libraries (. So,. dll)

Golang does not seem to support dynamic libraries (pending confirmation ...) ）

The package in Go

The first thing to know about your environment variables [Gopath]

Create the following directory under [Gopath] Directory
/bin
/pkg
/src

New Folder MyMath in SRC

[Gopath]/src/mymath/math.go

package mymathimport ("fmt")// Sqrt returns an approximation to the square root of x.func Add() {//大写，才能被外界调用fmt.Println("===package mymath Add func ")}

[Gopath]/src/main.go

package mainimport ("fmt""mymath")func main() {//var f float = 2.3mymath.Add()fmt.Printf("Hello, world~~~   \n")}

And then
$ go installGenerate a static library ([GOPATH]/PKG/.../MYMATH.A)

$ go build main.goBuild Program

$ mainLast Run