*: fix release script

build

@@ -2,9 +2,18 @@
 
 source ./env
 
-go install -ldflags="$LD_FLAGS" github.com/coreos/dex/cmd/dex-worker
-go install -ldflags="$LD_FLAGS" github.com/coreos/dex/cmd/dexctl
-go install -ldflags="$LD_FLAGS" github.com/coreos/dex/cmd/dex-overlord
+CMDS=( "dex-worker" "dexctl" "dex-overlord" "gendoc")
+FORMAT='{{ range $i, $dep := .Deps }}{{ $dep }} {{ end }}'
+
+for CMD in ${CMDS[@]}; do
+	TARGET="github.com/coreos/dex/cmd/$CMD"
+	# Install command dependencies. This caches package builds and speeds
+	# up successive builds a lot.
+	go list -f="$FORMAT" $TARGET | xargs go install -ldflags="$LD_FLAGS"
+
+	# Build the actual command.
+	go build -o="bin/$CMD" -ldflags="$LD_FLAGS" $TARGET
+done
+
 go build -o bin/example-app github.com/coreos/dex/examples/app
 go build -o bin/example-cli github.com/coreos/dex/examples/cli
-go install github.com/coreos/dex/cmd/gendoc

env

@@ -1,5 +1,4 @@
 export GOPATH=${PWD}/Godeps/_workspace
-export GOBIN=${PWD}/bin
 
 rm -rf $GOPATH/src/github.com/coreos/dex
 mkdir -p $GOPATH/src/github.com/coreos/
@@ -7,4 +6,6 @@ mkdir -p $GOPATH/src/github.com/coreos/
 # Only attempt to link dex into godeps if it isn't already there
 [ -d $GOPATH/src/github.com/coreos/dex ] || ln -s ${PWD} $GOPATH/src/github.com/coreos/dex
 
-LD_FLAGS="-X main.version=$(./git-version)"
+export VERSION=$(./git-version)
+
+LD_FLAGS="-X main.version=${VERSION}"

release

@@ -1,18 +1,24 @@
 #!/bin/bash -e
 
-VERSION=$(./git-version)
-
 GOARCH=amd64
 OSS=( "darwin" "linux" )
 
+
+source ./env
+
+# cannot cross compile when GOBIN is set.
+# See:
+#   https://golang.org/issue/9769
+#   https://golang.org/issue/11778
+unset GOBIN 
+
 for GOOS in ${OSS[@]}; do
 	name=dex-$VERSION-$GOOS-$GOARCH
 
 	rm -fr $name.tar.gz $name/
 	mkdir $name
 
-	GOOS=$GOOS GOARCH=$GOARCH ./build
-	cp bin/dexctl $name/
+	GOOS=$GOOS GOARCH=$GOARCH go build -o $name/dexctl -ldflags="$LD_FLAGS" github.com/coreos/dex/cmd/dexctl
 
 	tar -czf $name.tar.gz $name/
 	echo "Created ${name}.tar.gz"