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Go development environment on Windows with MSYS2

Normally, it is sufficient to grab the Go MSI installer from the website in order to set up the toolchain. However, some packages that provide Go wrappers for C libraries rely on cgo tool, which in turn, needs the GCC toolchain in order to build the glue code. Also, 3rd-party dependencies are usually hosted on services like GitHub, thus Git is also needed. This mini-guide illustrates how to setup a convenient development environment on Windows using MSYS2.

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.17.1 darwin/amd64.

GOOS Values

GOOS	Out of the Box
`aix`	✅
`android`	✅

	package main

	import (
	"fmt"
	"go/ast"
	"go/parser"
	"go/token"
	)

	var src = `package mypackage

	import (
	"syscall"
	"unsafe"
	)

	// MessageBox of Win32 API.
	func MessageBox(hwnd uintptr, caption, title string, flags uint) int {
	ret, _, _ := syscall.NewLazyDLL("user32.dll").NewProc("MessageBoxW").Call(
	uintptr(hwnd),
	uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(caption))),

	import time
	import struct

	f = open(r'\\.\pipe\NPtest', 'r+b', 0)
	i = 1

	while True:
	s = 'Message[{0}]'.format(i).encode('ascii')
	i += 1

	// compile with `gcc -I/usr/include getxkblayout.c -lX11 -lxkbfile`
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#include <X11/XKBlib.h>
	#include <X11/extensions/XKBrules.h>

	int main(int argc, char **argv) {
	Display *dpy = XOpenDisplay(NULL);

	package main

	import (
	"context"
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"
	"os/signal"

	#! /bin/bash
	for n in {1..100}; do
	dd if=/dev/urandom of=file$( printf %d "$n" ).bin bs=1 count=$(( RANDOM + 1024 ))
	done

	const WIDTH = 176
	const HEIGHT = 144

	const progRGB = yuv420ProgPlanarToRgb(base64ToArrayBuffer(yuv420ProgPlanarImage()), WIDTH, HEIGHT)
	const canvas = document.createElement("canvas")
	document.body.appendChild(canvas)
	const ctx = canvas.getContext("2d")
	const imageData = ctx.createImageData(WIDTH, HEIGHT)
	putRGBToRGBA(imageData.data, progRGB, WIDTH, HEIGHT)
	ctx.putImageData(imageData, 0, 0)