Makefile: target to for cross platform

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

Makefile

@@ -98,6 +98,7 @@ ifneq ($(GOPATH),)
 	rm -f "$(GOPATH)/.gopathok"
 endif
 	rm -rf _output
+	rm -rf ./crio.cross.*
 	rm -f docs/*.5 docs/*.8
 	rm -fr test/testdata/redis-image
 	find . -name \*~ -delete
@@ -109,6 +110,17 @@ endif
 	rm -f test/copyimg/copyimg
 	rm -f test/checkseccomp/checkseccomp
 
+
+local-cross:
+	@for target in windows/amd64 darwin/amd64 ; do \
+		os=`echo $${target} | cut -f1 -d/` ; \
+		arch=`echo $${target} | cut -f2 -d/` ; \
+		suffix=$${os}.$${arch} ; \
+		echo "building for $${target} ..."; \
+		GOOS=$${os} GOARCH=$${arch} $(GO) build -i $(LDFLAGS) -tags "containers_image_openpgp" -o crio.cross.$${suffix} $(PROJECT)/cmd/crio && \
+		echo "built ./crio.$${suffix}"; \
+	done
+
 crioimage:
 	docker build -t ${CRIO_IMAGE} .
 
@@ -224,6 +236,7 @@ install.tools: .install.gitvalidation .install.gometalinter .install.md2man .ins
 
 .PHONY: \
 	binaries \
+	local-cross \
 	clean \
 	conmon \
 	default \