Makefile: initial version for packages

Just adds the usual all/clean/test targets for whatever packages
are going to be added later.

Author: pohly

Makefile

@@ -0,0 +1,35 @@
+# Copyright 2018 The Kubernetes Authors.
+#
+# 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.
+
+.PHONY: all clean test
+
+ifdef V
+TESTARGS = -v
+else
+TESTARGS =
+endif
+
+all:
+	go build `go list ./... | grep -v 'vendor'`
+
+clean:
+	true
+
+test:
+	go test `go list ./... | grep -v ^vendor` $(TESTARGS)
+	go vet `go list ./... | grep -v ^vendor`
+	diff="$$(gofmt -d $$(find . -name '*.go' | grep -v ^./vendor))" && \
+	    ( [ -z "$$diff" ] || ( \
+	      echo "\nvvvvvv formatting errors, fix with patch -p1 vvvvvvvvvv\n$$diff\n^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n"; \
+	      false ) )