go-version-tag/README.md

Go Application Versioning

This repository contains a simple Go application that demonstrates how to embedded version strings that come from Git tags during the build process.

The version.go source contains a variable named Version that is initialized in the code to undefined string constant. The build command replaces this values with Git tag value optionally suffixed with information about changes since the tag.

The build command uses the -ldflags option of the go build command to set the value of the Version variable at compile time.

go build -o testver -ldflags "-X main.Version=$(VERSION)"

The version is captured using the following command:

VERSION=$(git describe --tags --always)

Use make command to build the application.