go build

删除调试符号

go build -ldflags "-s -w" [<your/package]

这里 -ldflags 参数最终会在 go tool link 的时候传给它， go tool link -h 解释如下

 -s    disable symbol table
 -w    disable DWARF generation

删除掉调试符号的另一个好处就是，显著减小了文件大小（平均20%）.

静态编译

go程序编译后的程序依赖glibc, 如果需要完全不依赖第三方库，需要静态编译，这时候需要glibc-static库。

CGO_ENABLED=0 go build -a -ldflags '-extldflags "-static"' .

二进制文件压缩

加一个UPX壳，还可以进一步压缩原文件大小。

# 压缩二进制文件
./upx <BINARY_FILE>

# 解压文件
./upx -d <BINARY_FILE>

Reference

  1. DWARF, Debugging With Attributed Record Formats. DWARF is a debugging file format used by many compilers and debuggers to support source level debugging.
  2. upx, UPX is an advanced executable file compressor. UPX will typically reduce the file size of programs and DLLs by around 50%-70%, thus reducing disk space, network load times, download times and other distribution and storage costs. Programs and libraries compressed by UPX are completely self-contained and run exactly as before, with no runtime or memory penalty for most of the supported formats.