Home Backend Development Golang golang compilation is too big

golang compilation is too big

May 27, 2023 pm 12:34 PM

golang is an efficient, strongly typed, concurrency-supported compiled language. Its streamlined syntax and powerful functions of the official standard library make it widely used in cloud computing, distributed systems and other fields. But at the same time, users often face the problem that golang compiled files are too large, making deployment and migration inconvenient. This article will analyze the reasons why golang compiled files are too large, and provide some solutions to help readers overcome this problem.

1. Reasons why golang compiled files are too large

The reasons why golang compiled files are too large are complicated and mainly include the following aspects:

  1. golang program Default static linking

When the golang program is compiled, static linking is used by default. This will cause a large number of library files and data to be embedded in the golang binary file, resulting in an increase in size.

  1. golang program supports cross-platform compilation

Due to golang's cross-platform support, multiple binary files will be generated during compilation, resulting in a larger overall program size.

  1. golang compilation tool chain features

Golang compilation tool chain features, such as code optimization, inlining and other functions, cause the compiler to generate a lot of redundant information in the binary file. This is one of the reasons why the compiled file is too large.

2. Solution

For the reasons mentioned above, we can take the following measures to reduce the size of golang compiled files:

  1. Use library file dynamics Link

When compiling golang programs, you can enable the cgo function by setting CGO_ENABLED=1 to achieve compatibility with dynamic linking. In this way, the program can dynamically link the required libraries during compilation, thus avoiding the generation of redundant files and thus reducing the file size.

  1. Optimizing compiler flag parameters

By optimizing the compiler flag parameters, the compiler can use appropriate code generation and compilation options to reduce program size. For example, using the -O command to enable code optimization can reduce program size; using the -ldflags="-w -s" command to delete debugging symbols and error messages in the program can also reduce the size of compiled files.

  1. Compress program files

Using open source tools such as upx to compress program files can effectively reduce the file size. upx is a portable, efficient, relocatable executable file compression tool that supports many operating systems and CPU architectures. Using upx-compressed binary files, data in shared libraries and programs can be dynamically loaded into memory when used, reducing the burden of I/O operations and thus improving the running efficiency of the program.

  1. Select the appropriate compilation tool chain version

Select the appropriate compilation tool chain version when compiling, for example, use go1.11.x-rc1 or higher. Golang compilation can reduce the size of the compiled file. Because this version has a lot of bug fixes, including fixes that effectively reduce the compilation size.

3. Summary

Golang is an excellent compiled language, but it is prone to problems of excessive size during compilation. This article analyzes the reasons why golang compiled files are too large and provides corresponding solutions. Therefore, when we use golang for development and compilation, we must control and optimize its compilation volume, so that our programs can be more efficient and reliable, and our development efficiency can be improved.

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