govvv
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 |
|
|---|---|
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.
Copyright 2016 Ahmet Alp Balkan
![[announcement] Changing username for the repo](https://avatars.githubusercontent.com/u/159209?v=4)
