Exclude darwin/arm from cross compile targets

Makefile

@@ -41,7 +41,7 @@ test:
 	if [ `go fmt $(go list ./... | grep -v /vendor/) | wc -l` -gt 0 ]; then echo "go fmt error"; exit 1; fi
 	if [ `go fmt $(go list ./... | grep -v /vendor/) | wc -l` -gt 0 ]; then echo "go fmt error"; exit 1; fi
 
 
 cross_compile:
 cross_compile:
-	GOARM=5 gox -os="darwin linux freebsd netbsd openbsd" -arch="386 amd64 arm" -output "${OUTPUT_DIR}/pkg/{{.OS}}_{{.Arch}}/{{.Dir}}"
+	GOARM=5 gox -os="darwin linux freebsd netbsd openbsd" -arch="386 amd64 arm" -osarch="!darwin/arm" -output "${OUTPUT_DIR}/pkg/{{.OS}}_{{.Arch}}/{{.Dir}}"
 
 
 targz:
 targz:
 	mkdir -p ${OUTPUT_DIR}/dist
 	mkdir -p ${OUTPUT_DIR}/dist