Add build flag into gnmi as --enable-dialout.

If --enable-dialout is presented and set as --enable-dialout=0, dialout part code will be deprecated, which should be used in internal branch.
Otherwise dialout code should be contained as before.

Makefile

@@ -26,6 +26,13 @@ ifeq ($(ENABLE_NATIVE_WRITE),y)
 BLD_TAGS := $(BLD_TAGS) gnmi_native_write
 endif
 
+# Define a variable that holds the value of the `--enable-dialout` option
+ENABLE_DIALOUT := $(filter --enable-dialout=%,$(MAKEFLAGS))
+ENABLE_DIALOUT_VALUE := $(subst --enable-dialout=,,$(ENABLE_DIALOUT))
+ifeq ($(strip $(ENABLE_DIALOUT_VALUE)),)
+ENABLE_DIALOUT_VALUE = 1
+endif
+
 ifneq ($(BLD_TAGS),)
 BLD_FLAGS := -tags "$(strip $(BLD_TAGS))"
 endif
@@ -63,15 +70,19 @@ go-deps-clean:
 sonic-gnmi: $(GO_DEPS)
 ifeq ($(CROSS_BUILD_ENVIRON),y)
 	$(GO) build -o ${GOBIN}/telemetry -mod=vendor $(BLD_FLAGS) github.com/sonic-net/sonic-gnmi/telemetry
+ifneq ($(ENABLE_DIALOUT_VALUE),0)
 	$(GO) build -o ${GOBIN}/dialout_client_cli -mod=vendor $(BLD_FLAGS) github.com/sonic-net/sonic-gnmi/dialout/dialout_client_cli
+endif
 	$(GO) build -o ${GOBIN}/gnmi_get -mod=vendor github.com/jipanyang/gnxi/gnmi_get
 	$(GO) build -o ${GOBIN}/gnmi_set -mod=vendor github.com/jipanyang/gnxi/gnmi_set
 	$(GO) build -o ${GOBIN}/gnmi_cli -mod=vendor github.com/openconfig/gnmi/cmd/gnmi_cli
 	$(GO) build -o ${GOBIN}/gnoi_client -mod=vendor github.com/sonic-net/sonic-gnmi/gnoi_client
 	$(GO) build -o ${GOBIN}/gnmi_dump -mod=vendor github.com/sonic-net/sonic-gnmi/gnmi_dump
 else
 	$(GO) install -mod=vendor $(BLD_FLAGS) github.com/sonic-net/sonic-gnmi/telemetry
+ifneq ($(ENABLE_DIALOUT_VALUE),0)
 	$(GO) install -mod=vendor $(BLD_FLAGS) github.com/sonic-net/sonic-gnmi/dialout/dialout_client_cli
+endif
 	$(GO) install -mod=vendor github.com/jipanyang/gnxi/gnmi_get
 	$(GO) install -mod=vendor github.com/jipanyang/gnxi/gnmi_set
 	$(GO) install -mod=vendor github.com/openconfig/gnmi/cmd/gnmi_cli
@@ -97,7 +108,9 @@ $(ENVFILE):
 check_gotest: $(DBCONFG) $(ENVFILE)
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(GO) test -race -coverprofile=coverage-config.txt -covermode=atomic -v github.com/sonic-net/sonic-gnmi/sonic_db_config
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(TESTENV) $(GO) test -race -coverprofile=coverage-gnmi.txt -covermode=atomic -mod=vendor $(BLD_FLAGS) -v github.com/sonic-net/sonic-gnmi/gnmi_server -coverpkg ../...
+ifneq ($(ENABLE_DIALOUT_VALUE),0)
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(TESTENV) $(GO) test -coverprofile=coverage-dialcout.txt -covermode=atomic -mod=vendor $(BLD_FLAGS) -v github.com/sonic-net/sonic-gnmi/dialout/dialout_client
+endif
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(GO) test -race -coverprofile=coverage-data.txt -covermode=atomic -mod=vendor -v github.com/sonic-net/sonic-gnmi/sonic_data_client
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(GO) test -race -coverprofile=coverage-dbus.txt -covermode=atomic -mod=vendor -v github.com/sonic-net/sonic-gnmi/sonic_service_client
 	sudo CGO_LDFLAGS="$(CGO_LDFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" $(TESTENV) $(GO) test -race -coverprofile=coverage-translutils.txt -covermode=atomic -mod=vendor -v github.com/sonic-net/sonic-gnmi/transl_utils
@@ -122,7 +135,9 @@ endif
 
 install:
 	$(INSTALL) -D $(BUILD_DIR)/telemetry $(DESTDIR)/usr/sbin/telemetry
+ifneq ($(ENABLE_DIALOUT_VALUE),0)
 	$(INSTALL) -D $(BUILD_DIR)/dialout_client_cli $(DESTDIR)/usr/sbin/dialout_client_cli
+endif
 	$(INSTALL) -D $(BUILD_DIR)/gnmi_get $(DESTDIR)/usr/sbin/gnmi_get
 	$(INSTALL) -D $(BUILD_DIR)/gnmi_set $(DESTDIR)/usr/sbin/gnmi_set
 	$(INSTALL) -D $(BUILD_DIR)/gnmi_cli $(DESTDIR)/usr/sbin/gnmi_cli
@@ -132,7 +147,9 @@ install:
 
 deinstall:
 	rm $(DESTDIR)/usr/sbin/telemetry
+ifneq ($(ENABLE_DIALOUT_VALUE),0)
 	rm $(DESTDIR)/usr/sbin/dialout_client_cli
+endif
 	rm $(DESTDIR)/usr/sbin/gnmi_get
 	rm $(DESTDIR)/usr/sbin/gnmi_set
 	rm $(DESTDIR)/usr/sbin/gnoi_client