mkversion

Documentation

Overview

Package mkversion gets version info from git and provides a bunch of differently formatted version strings that get used elsewhere in the build system to embed version numbers into binaries.

Index

• type VersionInfo
  • func Info() VersionInfo
  • func InfoFrom(dir string) (VersionInfo, error)
  • func (v VersionInfo) String() string

Types

type VersionInfo

type VersionInfo struct {
	// Major is the major version number portion of Short.
	Major int
	// Minor is the minor version number portion of Short.
	Minor int
	// Patch is the patch version number portion of Short.
	Patch int
	// Short is the short version string. See the documentation of version.Short
	// for possible values.
	Short string
	// Long is the long version string. See the documentation for version.Long
	// for possible values.
	Long string
	// GitHash is the git hash of the tailscale.com Go module.
	GitHash string
	// OtherHash is the git hash of a supplemental git repository, if any. For
	// example, the commit of the tailscale-android repository.
	OtherHash string
	// Xcode is the version string that gets embedded into Xcode builds for the
	// Tailscale iOS app and macOS standalone (aka "macsys") app.
	//
	// It is the same as Short, but with 100 added to the major version number.
	// This is because Apple requires monotonically increasing version numbers,
	// and very early builds of Tailscale used a single incrementing integer,
	// which the Apple interprets as the major version number. When we switched
	// to the current scheme, we started the major version number at 100 (v0,
	// plus 100) to make the transition.
	Xcode string
	// XcodeMacOS is the version string that gets embedded into Xcode builds for
	// the Tailscale macOS app store app.
	//
	// This used to be the same as Xcode, but at some point Xcode reverted to
	// auto-incrementing build numbers instead of using the version we embedded.
	// As a result, we had to alter the version scheme again, and switched to
	// GitHash's commit date, in the format "YYYY.DDD.HHMMSS"
	XcodeMacOS string
	// Winres is the version string that gets embedded into Windows exe
	// metadata. It is of the form "x,y,z,0".
	Winres string
	// Synology is a map of Synology DSM version to the
	// Tailscale numeric version that gets embedded in Synology spk
	// files.
	Synology map[int]int64
	// GitDate is the unix timestamp of GitHash's commit date.
	GitDate string
	// OtherDate is the unix timestamp of OtherHash's commit date, if any.
	OtherDate string
	// Track is the release track of this build: "stable" if the minor version
	// number is even, "unstable" if it's odd.
	Track string
	// MSIProductCodes is a map of Windows CPU architecture names to UUIDv5
	// hashes that uniquely identify the version of the build. These are used in
	// the MSI installer logic to uniquely identify particular builds.
	MSIProductCodes map[string]string
}

VersionInfo is version information extracted from a git checkout.

func Info

func Info() VersionInfo

Info constructs a VersionInfo from the current working directory and returns it, or terminates the process via log.Fatal.

func InfoFrom

func InfoFrom(dir string) (VersionInfo, error)

InfoFrom constructs a VersionInfo from dir and returns it, or an error.

func (VersionInfo) String

func (v VersionInfo) String() string

String returns v's information as shell variable assignments.