Use -X ldflags to set dockerversion package vars

This eliminates the need to lay down an auto-generated file.
IIRC this was originally hadded for gccgo which we no longer support.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>

.gitignore

@@ -17,8 +17,6 @@ autogen/
 bundles/
 cmd/dockerd/dockerd
 contrib/builder/rpm/*/changelog
-dockerversion/version_autogen.go
-dockerversion/version_autogen_unix.go
 vendor/pkg/
 go-test-report.json
 profile.out

dockerversion/version_lib.go

@@ -4,8 +4,8 @@
 package dockerversion // import "github.com/docker/docker/dockerversion"
 
 // Default build-time variable for library-import.
-// This file is overridden on build with build-time information.
-const (
+// These variables are overridden on build with build-time information.
+var (
 	GitCommit             = "library-import"
 	Version               = "library-import"
 	BuildTime             = "library-import"

hack/make.sh

@@ -113,7 +113,7 @@ LDFLAGS_STATIC=''
 EXTLDFLAGS_STATIC='-static'
 # ORIG_BUILDFLAGS is necessary for the cross target which cannot always build
 # with options like -race.
-ORIG_BUILDFLAGS=( -tags "autogen netgo osusergo static_build $DOCKER_BUILDTAGS" -installsuffix netgo )
+ORIG_BUILDFLAGS=( -tags "netgo osusergo static_build $DOCKER_BUILDTAGS" -installsuffix netgo )
 # see https://github.com/golang/go/issues/9369#issuecomment-69864440 for why -installsuffix is necessary here
 
 BUILDFLAGS=( ${BUILDFLAGS} "${ORIG_BUILDFLAGS[@]}" )

hack/make/.go-autogen

@@ -6,41 +6,16 @@ source hack/dockerfile/install/runc.installer
 source hack/dockerfile/install/tini.installer
 source hack/dockerfile/install/containerd.installer
 
-cat > dockerversion/version_autogen.go <<DVEOF
-// +build autogen
-
-// Package dockerversion is auto-generated at build-time
-package dockerversion
-
-// Default build-time variable for library-import.
-// This file is overridden on build with build-time information.
-const (
-	GitCommit             string = "$GITCOMMIT"
-	Version               string = "$VERSION"
-	BuildTime             string = "$BUILDTIME"
-	IAmStatic             string = "${IAMSTATIC:-true}"
-	PlatformName          string = "${PLATFORM}"
-	ProductName           string = "${PRODUCT}"
-	DefaultProductLicense string = "${DEFAULT_PRODUCT_LICENSE}"
-)
-
-// Code generated by hack/make/.go-autogen. DO NOT EDIT.
-DVEOF
-
-cat > dockerversion/version_autogen_unix.go <<DVEOF
-// +build autogen,!windows
-
-// Package dockerversion is auto-generated at build-time
-package dockerversion
-
-// Default build-time variable for library-import.
-// This file is overridden on build with build-time information.
-const (
-	InitCommitID string = "${TINI_COMMIT}"
-)
-
-// Code generated by hack/make/.go-autogen. DO NOT EDIT.
-DVEOF
+LDFLAGS="${LDFALGS} \
+	-X github.com/docker/docker/dockerversion.Version=${VERSION} \
+	-X github.com/docker/docker/dockerversion.GitCommit=${GITCOMMIT} \
+	-X github.com/docker/docker/dockerversion.BuildTime=${BUILDTIME} \
+	-X github.com/docker/docker/dockerversion.IAmStatic=${IAMSTATIC:-true} \
+	-X github.com/docker/docker/dockerversion.PlatformName=${PLATFORM} \
+	-X github.com/docker/docker/dockerversion.ProductName=${PRODUCT} \
+	-X github.com/docker/docker/dockerversion.DefaultProductLicense=${DEFAULT_PRODUCT_LICENSE} \
+	-X github.com/docker/docker/dockerversion.InitCommitID=${TINI_COMMIT} \
+"
 
 # Compile the Windows resources into the sources
 if [ "$(go env GOOS)" = "windows" ]; then