golang plug-in offline installation

In recent years, Golang has become more and more popular among developers as a fast, efficient and safe programming language. In Golang, plug-ins are also a very important component, which can provide more functions and flexibility for Golang projects. However, due to some reasons, such as network limitations, etc., offline installation may sometimes be required. This article will introduce how to install Golang plug-ins offline.

1. Download the required plug-ins

First of all, if the network environment is good, we need to download the required plug-ins first. You can download it from the official library through the following command:

go get -u github.com/xxx/xxx

Among them, github.com/xxx/xxx is the path of the plug-in that needs to be downloaded. This command will automatically download the corresponding plug-in from the Internet and install it.

If we need to install offline, we can use the following command to directly download the source code of the plug-in:

go get -u -d github.com/xxx/xxx

This command will only download the source code without installing it. The "-d" option here tells go to only download the source code without compiling and installing it.

2. Compile the plug-in

After we have the source code of the plug-in, we can compile it.

First, you need to download all dependent packages. You can use the following command:

go mod vendor

This command will generate a vendor directory in the current directory, which contains all required dependency packages. In this way, we can compile the plug-in in an offline environment.

Next, use the following command to compile:

go build -buildmode=plugin -o xxx.so

This command will generate a xxx.so file, which is the Golang plug-in we need. During the compilation process, you need to pay attention to specifying the "-buildmode=plugin" option to tell the go compiler to compile the program into a plug-in.

3. Install the plug-in

With the plug-in file, we can install it offline. During the installation process, we need to place the plug-in files in the $GOPATH/bin directory.

First, you need to create a bin directory:

mkdir -p $GOPATH/bin

Then, move the plug-in file to this directory:

mv xxx.so $GOPATH/bin

In this way, we have completed the offline installation of the Golang plug-in process.

Summary:

Offline installation of Golang plug-ins may require some additional steps, but as long as you master these steps, you can successfully compile and install the plug-in in an offline environment. It should be noted that during offline installation, you need to download the source code and dependency packages of the plug-in first, and specify the "-buildmode=plugin" option when compiling. During installation, you need to place the plug-in file in the $GOPATH/bin directory. In daily development, we can choose to install plug-ins online or offline according to the actual situation to achieve an efficient and smooth development process.

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