From 04b3fafb50c80db307d2287766ab25de2c07d12b Mon Sep 17 00:00:00 2001
From: Julius Kammerl <julius.kammerl@gmail.com>
Date: Mon, 23 Apr 2018 15:42:07 +0200
Subject: [PATCH] Avoid to call 'go' with empty -tags argument

go1.10.1 linux/amd64 complains: flag provided but not defined: -tags
when compiling with: "make build-cross dist". This seems to fix it.
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 2dfbd2c3c..a8f778377 100644
--- a/Makefile
+++ b/Makefile
@@ -31,7 +31,7 @@ build:
 .PHONY: build-cross
 build-cross: LDFLAGS += -extldflags "-static"
 build-cross:
-	CGO_ENABLED=0 gox -parallel=3 -output="_dist/{{.OS}}-{{.Arch}}/{{.Dir}}" -osarch='$(TARGETS)' $(GOFLAGS) -tags '$(TAGS)' -ldflags '$(LDFLAGS)' k8s.io/helm/cmd/$(APP)
+	CGO_ENABLED=0 gox -parallel=3 -output="_dist/{{.OS}}-{{.Arch}}/{{.Dir}}" -osarch='$(TARGETS)' $(GOFLAGS) $(if $(TAGS),-tags '$(TAGS)',) -ldflags '$(LDFLAGS)' k8s.io/helm/cmd/$(APP)
 
 .PHONY: dist
 dist: