Simplify makefiles in rootfs folders

rootfs/expandybird/Makefile

@@ -12,27 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-DOCKER_REGISTRY := gcr.io
-PREFIX := $(DOCKER_REGISTRY)/$(PROJECT)
 IMAGE ?= expandybird
-TAG ?= git-$(shell git rev-parse --short HEAD)
-FULL_IMAGE := $(PREFIX)/$(IMAGE)
 
-.PHONY: container
-container: binary expansion
-	docker build -t $(FULL_IMAGE):latest -f Dockerfile .
-	docker tag $(FULL_IMAGE):latest $(FULL_IMAGE):$(TAG)
+include ../include.mk
 
-.PHONY: push
-push: container
-ifeq ($(DOCKER_REGISTRY),gcr.io)
-	gcloud docker push $(PREFIX)/$(IMAGE):$(TAG)
-else
-	docker push $(PREFIX)/$(IMAGE):$(TAG)
-endif
+.PHONY: extras
+extras: expansion
 
+.PHONY: expansion
 expansion:
 	cp -R ../../expansion ./opt
-
-binary:
-	cp ../../bin/linux-amd64/expandybird ./bin

rootfs/include.mk

@@ -0,0 +1,69 @@
+# Copyright 2015 The Kubernetes Authors All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# If you update this image please check the tag value before pushing.
+
+DOCKER_REGISTRY ?= gcr.io
+PREFIX := $(DOCKER_REGISTRY)/$(PROJECT)
+FULL_IMAGE := $(PREFIX)/$(IMAGE)
+
+TAG ?= git-$(shell git rev-parse --short HEAD)
+
+DEFAULT_PLATFORM := $(shell uname | tr '[:upper:]' '[:lower:]')
+PLATFORM ?= $(DEFAULT_PLATFORM)
+
+DEFAULT_ARCH := $(shell uname -m)
+ARCH ?= $(DEFAULT_ARCH)
+
+.PHONY: info
+info:
+	@echo "Build tag: ${TAG}"
+	@echo "Registry: ${DOCKER_REGISTRY}"
+	@echo "Project: ${PROJECT}"
+	@echo "Image: ${IMAGE}"
+	@echo "Platform: ${PLATFORM}"
+	@echo "Arch: ${ARCH}"
+
+.PHONY : .project
+
+.PHONY: push
+push: container
+ifeq ($(DOCKER_REGISTRY),gcr.io)
+	gcloud docker push $(FULL_IMAGE):$(TAG)
+else
+	docker push $(FULL_IMAGE):$(TAG)
+endif
+
+.PHONY: container
+container: .project .docker binary extras
+	docker build -t $(FULL_IMAGE):latest -f Dockerfile .
+	docker tag -f $(FULL_IMAGE):latest $(FULL_IMAGE):$(TAG)
+
+.project:
+	@if [[ -z "${PROJECT}" ]]; then echo "PROJECT variable must be set"; exit 1; fi
+
+.docker:
+	@if [[ -z `which docker` ]] || ! docker version &> /dev/null; then echo "docker is not installed correctly"; exit 1; fi
+
+CROSS_IMAGE := $(PLATFORM)-$(ARCH)/$(IMAGE)/$(IMAGE)
+
+.PHONY: binary
+binary:
+	@if [[ -z $(CROSS_IMAGE) ]]; then \
+		echo cp ../../bin/$(CROSS_IMAGE) ./bin ; \
+		cp ../../bin/$(CROSS_IMAGE) ./bin ; \
+	else \
+		echo cp ../../bin/$(IMAGE) ./bin ; \
+		cp ../../bin/$(IMAGE) ./bin ; \
+	fi

rootfs/manager/Makefile

@@ -12,30 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-DOCKER_REGISTRY := gcr.io
-PREFIX := $(DOCKER_REGISTRY)/$(PROJECT)
 IMAGE ?= manager
-TAG ?= git-$(shell git rev-parse --short HEAD)
-FULL_IMAGE := $(PREFIX)/$(IMAGE)
-
 KUBE_VERSION ?= v1.1.7
 
-.PHONY: container
-container: binary kubectl
-	docker build -t $(FULL_IMAGE):latest -f Dockerfile .
-	docker tag $(FULL_IMAGE):latest $(FULL_IMAGE):$(TAG)
-
-.PHONY: push
-push: container
-ifeq ($(DOCKER_REGISTRY),gcr.io)
-	gcloud docker push $(PREFIX)/$(IMAGE):$(TAG)
-else
-	docker push $(PREFIX)/$(IMAGE):$(TAG)
-endif
+include ../include.mk
 
-binary:
-	cp ../../bin/linux-amd64/manager ./bin
+.PHONY: extras
+extras: kubectl
 
+.PHONY: kubectl
 kubectl:
 	curl -fsSL -o bin/kubectl https://storage.googleapis.com/kubernetes-release/release/${KUBE_VERSION}/bin/linux/amd64/kubectl
 	chmod +x bin/kubectl

rootfs/resourcifier/Makefile

@@ -12,30 +12,20 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-DOCKER_REGISTRY := gcr.io
-PREFIX := $(DOCKER_REGISTRY)/$(PROJECT)
 IMAGE ?= resourcifier
-TAG ?= git-$(shell git rev-parse --short HEAD)
-FULL_IMAGE := $(PREFIX)/$(IMAGE)
+	KUBE_VERSION ?= v1.1.7
 
-KUBE_VERSION ?= v1.1.7
+include ../include.mk
 
-.PHONY: container
-container: binary kubectl
-	docker build -t $(FULL_IMAGE):latest -f Dockerfile .
-	docker tag $(FULL_IMAGE):latest $(FULL_IMAGE):$(TAG)
+.PHONY: extras
+extras: expansion kubectl
 
-.PHONY: push
-push: container
-ifeq ($(DOCKER_REGISTRY),gcr.io)
-	gcloud docker push $(PREFIX)/$(IMAGE):$(TAG)
-else
-	docker push $(PREFIX)/$(IMAGE):$(TAG)
-endif
-
-binary:
-	cp ../../bin/linux-amd64/resourcifier ./bin
+.PHONY: expansion
+expansion:
+	cp -R ../../expansion ./opt
 
+.PHONY: kubectl
 kubectl:
 	curl -fsSL -o bin/kubectl https://storage.googleapis.com/kubernetes-release/release/${KUBE_VERSION}/bin/linux/amd64/kubectl
 	chmod +x bin/kubectl
+