Programming language: Go
License: Apache License 2.0
Latest version: v0.3.0

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The simple Go binary versioning tool that wraps the go build command.

Stop worrying about -ldflags and go get github.com/ahmetb/govvv now.

Build Variables

Variable Description Example
main.GitCommit short commit hash of source tree 0b5ed7a
main.GitBranch current branch name the code is built off master
main.GitState whether there are uncommitted changes clean or dirty
main.GitSummary output of git describe --tags --dirty --always v1.0.0, v1.0.1-5-g585c78f-dirty, fbd157c
main.BuildDate RFC3339 formatted UTC date 2016-08-04T18:07:54Z
main.Version contents of ./VERSION file, if exists, or the value passed via the -version option 2.0.0

Using govvv is easy

Just add the build variables you want to the main package and run:

old :sparkles: new :sparkles:
go build govvv build
go install govvv install

Version your app with govvv

Create a VERSION file in your build root directory and add a Version variable to your main package.

Do you have your own way of specifying Version? No problem:

govvv lets you specify custom -ldflags

Your existing -ldflags argument will still be preserved:

govvv build -ldflags "-X main.BuildNumber=$buildnum" myapp

and the -ldflags constructed by govvv will be appended to your flag.

Don’t want to depend on govvv? It’s fine!

You can just pass a -print argument and govvv will just print the go build command with -ldflags for you and will not execute the go tool:

$ govvv build -print
go build \
    -ldflags \
    "-X main.GitCommit=57b9870 -X main.GitBranch=dry-run -X main.GitState=dirty -X main.Version=0.1.0 -X main.BuildDate=2016-08-08T20:50:21Z"

Still don’t want to wrap the go tool? Well, try -flags to retrieve the LDFLAGS govvv prepares:

$ go build -ldflags="$(govvv -flags)"

Want to use a different package?

You can pass a -pkg argument with the full package name, and govvv will set the build variables in that package instead of main. For example:

# build with govvv
$ govvv build -pkg github.com/myacct/myproj/mypkg

# build with go
$ go build -ldflags="$(govvv -flags -pkg $(go list ./mypkg))"

Want to use a different version?

You can pass a -version argument with the desired version, and govvv will use the specified version instead of obtaining it from the ./VERSION file. For example:

# build with govvv
$ govvv build -version 1.2.3

# build with go
$ go build -ldflags="$(govvv -flags -version 1.2.3)"

Try govvv today

$ go get github.com/ahmetb/govvv

govvv is distributed under [Apache 2.0 License](LICENSE).

Copyright 2016 Ahmet Alp Balkan

Build Status

*Note that all licence references and agreements mentioned in the govvv README section above are relevant to that project's source code only.