diff --git a/Makefile b/Makefile
index 0ff34c6..8b83d43 100644
--- a/Makefile
+++ b/Makefile
@@ -14,6 +14,11 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+KERNEL = $(shell uname -s)
+ifneq ($(KERNEL), Linux)
+$(error only support Linux now.)
+endif
+
 debug = 0
 
 PREFIX = /usr/local
@@ -30,7 +35,7 @@ endif
 
 SRC := $(wildcard *.c)
 
-GRAFTCP_LOCAL_BIN = $(GOPATH)/bin/graftcp-local
+GRAFTCP_LOCAL_BIN = graftcp-local/graftcp-local
 TARGET = graftcp $(GRAFTCP_LOCAL_BIN)
 
 all:: $(TARGET)
@@ -42,15 +47,15 @@ graftcp: main.o util.o string-set.o
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 $(GRAFTCP_LOCAL_BIN)::
-	go get -v github.com/hmgle/graftcp/graftcp-local
+	$(MAKE) -C graftcp-local
 
 install:: graftcp $(GRAFTCP_LOCAL_BIN)
-	$(INSTALL) $< $(BINDIR); \
-	graftcp-local -service install && graftcp-local -service start
+	$(INSTALL) $< $(BINDIR)
+	$(MAKE) -C graftcp-local $@
 
 uninstall:: $(GRAFTCP_LOCAL_BIN)
-	-rm -f $(BINDIR)/graftcp; \
-	graftcp-local -service uninstall
+	-rm -f $(BINDIR)/graftcp
+	$(MAKE) -C graftcp-local $@
 
 install_graftcp:: graftcp 
 	$(INSTALL) $< $(BINDIR)
@@ -58,11 +63,11 @@ install_graftcp:: graftcp
 uninstall_graftcp::
 	-rm -f $(BINDIR)/graftcp
 
-install_graftcp_local:: $(GRAFTCP_LOCAL_BIN)
-	graftcp-local -service install && graftcp-local -service restart
+install_graftcp_local:
+	$(MAKE) -C graftcp-local install
 
-uninstall_graftcp_local:: $(GRAFTCP_LOCAL_BIN)
-	graftcp-local -service stop && graftcp-local -service uninstall
+uninstall_graftcp_local:
+	$(MAKE) -C graftcp-local uninstall
 
 sinclude $(SRC:.c=.d)
 
@@ -73,4 +78,5 @@ sinclude $(SRC:.c=.d)
 		rm -f $@.$$$$
 
 clean::
-	-rm -f *.o $(TARGET) *.d
+	-rm -f *.o graftcp *.d
+	$(MAKE) -C graftcp-local $@
diff --git a/README.md b/README.md
index 5d4673f..1c1c3d1 100644
--- a/README.md
+++ b/README.md
@@ -26,13 +26,13 @@ git clone https://github.com/hmgle/graftcp.git
 cd graftcp
 make
 ```
-After make finishes, you'll be able to use `graftcp-local` and `./graftcp`.
+After make finishes, you'll be able to use `graftcp-local/graftcp-local` and `./graftcp`.
 Optionally, you can also install them to system:
 
 ```sh
 # sudo's PATH may be overridden by the security policy,
 # so set the PATH for Go
-sudo env "PATH=$PATH" make install
+sudo make install
 ```
 
 Then `graftcp-local` will run automatically as the operating system starts.
@@ -42,8 +42,8 @@ Then `graftcp-local` will run automatically as the operating system starts.
 `graftcp-local`:
 
 ```console
-$ graftcp-local -h
-Usage of graftcp-local:
+$ graftcp-local/graftcp-local -h
+Usage of graftcp-local/graftcp-local:
   -config string
         Path to the configuration file
   -listen string
@@ -93,8 +93,9 @@ Options:
 Assume you are running the SOCKS5 proxy with the default IP address: "localhost:1080". Start the `graftcp-local` first:
 
 ```sh
-graftcp-local
+graftcp-local/graftcp-local
 ```
+
 Install the Go package from golang.org (now is blocked by the GFW) via `graftcp`:
 
 ```sh
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 2b4c482..d82de9e 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -21,7 +21,7 @@ cd graftcp
 make
 ```
 
-make 执行完后，即可运行 `graftcp-local` 和 `./graftcp`。可以把它们都安装进系统：
+make 执行完后，即可运行 `graftcp-local/graftcp-local` 和 `./graftcp`。可以把它们都安装进系统：
 
 ```sh
 # sudo's PATH may be overridden by the security policy,
@@ -36,8 +36,8 @@ sudo env "PATH=$PATH" make install
 `graftcp-local`:
 
 ```console
-$ graftcp-local -h
-Usage of graftcp-local:
+$ graftcp-local/graftcp-local -h
+Usage of graftcp-local/graftcp-local:
   -config string
         Path to the configuration file
   -listen string
@@ -87,7 +87,7 @@ Options:
 假设你正在运行默认地址 "localhost:1080" 的 SOCKS5 代理，首先启动 `graftcp-local`：
 
 ```sh
-graftcp-local
+graftcp-local/graftcp-local
 ```
 
 通过 `graftcp` 安装来自 golang.org 的 Go 包:
diff --git a/graftcp-local/Makefile b/graftcp-local/Makefile
new file mode 100644
index 0000000..1c82571
--- /dev/null
+++ b/graftcp-local/Makefile
@@ -0,0 +1,29 @@
+GO_CMD := $(shell command -v go 2> /dev/null)
+ifndef GO_CMD
+$(error "go is not available, please install go")
+endif
+
+export GOPATH := $(CURDIR)/.gopath
+export PATH := $(PATH):$(CURDIR)/.gopath/bin
+
+GO_IMPORT_PATH := github.com/hmgle/graftcp/graftcp-local
+
+all:: graftcp-local
+
+graftcp-local: .gopath/.created $(wildcard *.go)
+	go build -v $(GO_IMPORT_PATH)
+
+.gopath/.created:
+	rm -rf .gopath
+	mkdir -p $(dir .gopath/src/$(GO_IMPORT_PATH))
+	ln -s $(CURDIR) .gopath/src/$(GO_IMPORT_PATH)
+	touch $@
+
+install:: graftcp-local
+	./graftcp-local -service install && ./graftcp-local -service restart
+
+uninstall:: graftcp-local
+	./graftcp-local -service stop && ./graftcp-local -service uninstall
+
+clean::
+	-rm -rf graftcp-local .gopath