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This article mainly introduces "UPX how to compress Go executable files". In daily operation, I believe many people have doubts about how UPX compresses Go executable files. Xiaobian consulted various materials and sorted out simple and easy operation methods. I hope to help you answer the doubts about "UPX how to compress Go executable files"! Next, please follow the small series to learn together!

Usually the executable built with go is a bit large, but it is always desirable to generate a smaller executable.

In this article, you'll see several ways to reduce executable file size.

The net effect is that the size of the executable file will be much smaller than what is normally generated.

Typically, files are built with the following sizes.

Mode LastWriteTime Length Name---- ------------- ------ -----a---- 12/14/2019 9:47 AM 1974272 main-ori.exe

Add build flags

Two ld parameters can be added when building a project using the go tool, which are-s and-w.

go build -ldflags="-s -w" main.go

-s: Omit symbol tables and debug information. In most cases, they are not needed in a production environment.

-w: Omit the DWARF message.

These two parameters do not affect the execution of the program, but they reduce the executable file size.

Mode LastWriteTime Length Name---- ------------- ------ -----a---- 12/14/2019 9:48 AM 1427968 main-flag.exe

UPX compression

Upx is a binary compression tool. It can be used to compress binary files and further reduce file size.

The commands for compressing files are:

upx main.exe

After compression, the file size becomes much smaller.

Mode LastWriteTime Length Name---- ------------- ------ -----a---- 12/14/2019 9:52 AM 495616 main.exe

Happy code.

At this point, the study of "UPX how to compress Go executable files" is over, hoping to solve everyone's doubts. Theory and practice can better match to help you learn, go and try it! If you want to continue learning more relevant knowledge, please continue to pay attention to the website, Xiaobian will continue to strive to bring more practical articles for everyone!

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