编译经典程序
程序代码
package main
import "fmt"
func main() {
fmt.Println("Hello World.")
}
编译环境
$ go version
go version go1.16.7 linux/amd64
0. 直接编译
$ go build -o helloword main.go
$ ls -lh helloword
-rwxrwxr-x 1 gobai gobai 1.9M Nov 23 09:34 helloword
1. 修改编译选项
除去编译时带的符号表和调试信息
$ go build -ldflags="-s -w" -o helloword main.go
$ ls -lh helloword
-rwxrwxr-x 1 gobai gobai 1.3M Nov 23 09:38 helloword
2. 使用 UPX
对直接编译出的二进制使用 upx 进一步压缩
$ go build -o helloword main.go
$ upx -9 helloword
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2020
UPX 3.96 Markus Oberhumer, Laszlo Molnar & John Reiser Jan 23rd 2020
File size Ratio Format Name
-------------------- ------ ----------- -----------
1937143 -> 1105452 57.07% linux/amd64 helloword
Packed 1 file.
$ ls -lh helloword
-rwxrwxr-x 1 gobai gobai 1.1M Nov 23 09:40 helloword
1和2组合使用
$ go build -ldflags="-s -w" -o helloword main.go && upx -9 helloword
Ultimate Packer for eXecutables
Copyright (C) 1996 - 2020
UPX 3.96 Markus Oberhumer, Laszlo Molnar & John Reiser Jan 23rd 2020
File size Ratio Format Name
-------------------- ------ ----------- -----------
1355776 -> 543392 40.08% linux/amd64 helloword
Packed 1 file.
$ ls -lh helloword
-rwxrwxr-x 1 gobai gobai 531K Nov 23 09:42 helloword
可以看出，压缩效果显著！