Let's talk about how golang compiles code

Golang compilation is the process of translating Go program source code into machine language that the computer can understand and execute. This article will introduce how to use the Golang compiler to compile Go programs on Windows, MacOS, and Linux.

1. Install the Golang compiler

First, you need to download and install the Golang compiler from the official website. The download address is: https://golang.org/dl/.

After the installation is completed, enter the "go version" command in the terminal or command line. If the installation is successful, the installed Golang version number will be displayed.

2. Writing Go program

Create a .go file, for example: hello.go, and write the following code in the file:

package main

import "fmt"

func main() {
    fmt.Println("Hello, World!")
}

3. Compile Go program

Open a terminal or command line window, enter the directory where the hello.go file is written, and then use the following command to compile the program:

go build hello.go

This command will Generate an executable file named hello. If you want to rename it to another name, you can use the following command:

go build -o myapp hello.go

The above command will generate an executable file named myapp.

4. Cross-compilation

Cross-compilation refers to compiling an executable file for another operating system on one operating system. For example, compile an executable on Windows that can run on Linux, or compile an executable on MacOS that can run on Windows.

In order to cross-compile, you can use the following command:

GOOS=target-OS GOARCH=target-arch go build hello.go

"target-OS" is the target operating system (for example: linux, windows, darwin, etc.), "target-arch" is the target Architecture (for example: amd64, 386, arm, etc.).

For example, to compile an executable file on Windows that can run on Linux, you can use the following command:

GOOS=linux GOARCH=amd64 go build hello.go

The above command will generate a Linux executable file named hello.

Summary:

Through the above steps, you can easily use the Golang compiler to compile Go programs and generate executable files. At the same time, through cross-compilation, you can also compile an executable file for another operating system on one operating system. This makes Golang a very flexible and adaptable programming language.

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