diff --git a/.gitignore b/.gitignore
index ef2a69288..63a6a3901 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,7 +27,7 @@ out-test
 tools/
 tmp/
 bin/
-output/
+_output/
 
 ### OpenIM deploy ###
 deploy/open_im_demo
diff --git a/cmd/Open-IM-SDK-Core b/cmd/Open-IM-SDK-Core
deleted file mode 160000
index e731cb86e..000000000
--- a/cmd/Open-IM-SDK-Core
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e731cb86ec9314a0b30b4f8331d53854c2c9d858
diff --git a/script/make-rules/common.mk b/script/make-rules/common.mk
index 904a97d75..bb900d8ae 100644
--- a/script/make-rules/common.mk
+++ b/script/make-rules/common.mk
@@ -87,6 +87,8 @@ PLATFORMS ?= linux_amd64 linux_arm64
 # The OS can be linux/windows/darwin when building binaries
 # PLATFORMS ?= darwin_amd64 windows_amd64 linux_amd64 linux_arm64
 
+# only support linux
+GOOS=linux
 
 # set a specific PLATFORM, defaults to the host platform
 ifeq ($(origin PLATFORM), undefined)
diff --git a/script/make-rules/golang.mk b/script/make-rules/golang.mk
index e0ae4e399..fe4757ee6 100644
--- a/script/make-rules/golang.mk
+++ b/script/make-rules/golang.mk
@@ -88,6 +88,11 @@ EXCLUDE_TESTS=github.com/OpenIMSDK/Open-IM-Server/test github.com/OpenIMSDK/Open
 # BIN_DIR=/root/workspaces/OpenIM/_output/bin
 # ==============================================================================
 
+## go.build: Build binaries
+.PHONY: go.build
+go.build: go.build.verify $(addprefix go.build., $(addprefix $(PLATFORM)., $(BINS)))
+	@echo "===========> Building binary $(BINS) $(VERSION) for $(PLATFORM)"
+
 ## go.build.verify: Verify that a suitable version of Go exists
 .PHONY: go.build.verify
 go.build.verify:
@@ -106,12 +111,7 @@ go.build.%:
 	@echo "=====> BIN_DIR=$(BIN_DIR)"
 	@echo "===========> Building binary $(COMMAND) $(VERSION) for $(OS)_$(ARCH)"
 	@mkdir -p $(OUTPUT_DIR)/platforms/$(OS)/$(ARCH)
-	@CGO_ENABLED=0 GOOS=$(OS) GOARCH=$(ARCH) $(GO) build $(GO_BUILD_FLAGS) -o $(OUTPUT_DIR)/platforms/$(OS)/$(ARCH)/$(COMMAND)$(GO_OUT_EXT) $(ROOT_PACKAGE)/cmd/$(COMMAND)
-
-## go.build: Build binaries
-.PHONY: go.build
-go.build: go.build.verify $(addprefix go.build., $(addprefix $(PLATFORM)., $(BINS)))
-	@echo "===========> Building binary $(BINS) $(VERSION) for $(PLATFORM)"
+	@CGO_ENABLED=0 GOOS=$(OS) GOARCH=$(ARCH) $(GO) build $(GO_BUILD_FLAGS) -o $(OUTPUT_DIR)/platforms/$(OS)/$(ARCH)/$(COMMAND)$(GO_OUT_EXT) $(ROOT_DIR)/cmd/$(COMMAND)/main.go
 
 ## go.multiarch: Build multi-arch binaries
 .PHONY: go.build.multiarch
diff --git a/script/make-rules/tools.mk b/script/make-rules/tools.mk
index 2c6689668..f4b3ddf08 100644
--- a/script/make-rules/tools.mk
+++ b/script/make-rules/tools.mk
@@ -17,7 +17,7 @@
 # Why download to the tools directory, thinking we might often switch Go versions using gvm.
 #
 
-# sealer build use BUILD_TOOLS
+# openim build use BUILD_TOOLS
 BUILD_TOOLS ?= golangci-lint goimports addlicense deepcopy-gen conversion-gen ginkgo go-junit-report go-gitlint
 # Code analysis tools
 ANALYSIS_TOOLS = golangci-lint goimports golines go-callvis kube-score
@@ -71,7 +71,6 @@ install.golangci-lint:
 install.goimports:
 	@$(GO) install golang.org/x/tools/cmd/goimports@latest
 
-# Actions path: https://github.com/sealerio/sealer/tree/main/.github/workflows/go.yml#L37-L50
 ## install.addlicense: Install addlicense, used to add license header to source files
 .PHONY: install.addlicense
 install.addlicense: