How to Set Package Variables in Go Using `-ldflags -X`?

Setting Package Variables with -ldflags -X in Golang Build:

In Go, it is possible to set package variables during the build process using the -ldflags -X option. This feature allows developers to define variables that can be accessed throughout the application. While it is common to set variables in the main package, it is also possible to set them within other packages.

To set a package variable in a non-main package, you must specify the full import path of the package, as opposed to just the package name. For example, let's say you have a config package located at $GOPATH/src/my/package/config. To set the Version variable within this package, you would use the following build command:

go build -ldflags "-X my/package/config.Version=1.0.0" -o $(MY_BIN) $(MY_SRC)

By adhering to this format, you can effectively set package variables in any desired package regardless of its location within the project.

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