Specify supported drivers per platform

Makefile

@@ -110,6 +110,6 @@ clean:
 .PHONY: gendocs
 gendocs: docs/minikube.md
 
-docs/minikube.md: $(shell find cmd) pkg/minikube/cluster/assets.go
+docs/minikube.md: $(shell find cmd) $(shell find pkg/minikube/constants) pkg/minikube/cluster/assets.go
 	$(MKGOPATH)
-	cd $(GOPATH)/src/$(REPOPATH) && go run -ldflags="$(K8S_VERSION_LDFLAGS) $(MINIKUBE_LDFLAGS)" gen_help_text.go
+	cd $(GOPATH)/src/$(REPOPATH) && go run -ldflags="$(K8S_VERSION_LDFLAGS) $(MINIKUBE_LDFLAGS)" -tags gendocs gen_help_text.go

pkg/minikube/constants/constants.go

@@ -51,13 +51,6 @@ var LogFlags = [...]string{
 	"vmodule",
 }
 
-var SupportedVMDrivers = [...]string{
-	"virtualbox",
-	"vmwarefusion",
-	"kvm",
-	"xhyve",
-}
-
 const (
 	DefaultIsoUrl   = "https://storage.googleapis.com/minikube/minikube-0.5.iso"
 	DefaultMemory   = 1024

pkg/minikube/constants/constants_darwin.go

@@ -0,0 +1,25 @@
+// +build darwin,!gendocs
+
+/*
+Copyright 2016 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.
+*/
+
+package constants
+
+var SupportedVMDrivers = [...]string{
+	"virtualbox",
+	"xhyve",
+	"vmwarefusion",
+}

pkg/minikube/constants/constants_gendocs.go

@@ -0,0 +1,26 @@
+// +build gendocs
+
+/*
+Copyright 2016 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.
+*/
+
+package constants
+
+var SupportedVMDrivers = [...]string{
+	"virtualbox",
+	"vmwarefusion",
+	"kvm",
+	"xhyve",
+}

pkg/minikube/constants/constants_linux.go

@@ -0,0 +1,24 @@
+// +build linux,!gendocs
+
+/*
+Copyright 2016 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.
+*/
+
+package constants
+
+var SupportedVMDrivers = [...]string{
+	"virtualbox",
+	"kvm",
+}

pkg/minikube/constants/constants_windows.go

@@ -0,0 +1,23 @@
+// +build windows,!gendocs
+
+/*
+Copyright 2016 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.
+*/
+
+package constants
+
+var SupportedVMDrivers = [...]string{
+	"virtualbox",
+}