diff --git a/include/os/os.h b/include/os/os.h
index d3f5e9f61b..f200bafc72 100644
--- a/include/os/os.h
+++ b/include/os/os.h
@@ -20,12 +20,14 @@
 extern "C" {
 #endif
 
+#include <assert.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
 
+#include "osEndian.h"
 #include "osMemory.h"
 
 #ifdef __cplusplus
diff --git a/include/os/osEndian.h b/include/os/osEndian.h
new file mode 100644
index 0000000000..496012cf28
--- /dev/null
+++ b/include/os/osEndian.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TD_OS_ENDIAN_H_
+#define _TD_OS_ENDIAN_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static const int32_t endian_test_var = 1;
+#define IS_LITTLE_ENDIAN() (*(uint8_t *)(&endian_test_var) != 0)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_OS_ENDIAN_H_*/
\ No newline at end of file
diff --git a/include/util/tcoding.h b/include/util/tcoding.h
index 9825ab2bee..3ccf51c2dd 100644
--- a/include/util/tcoding.h
+++ b/include/util/tcoding.h
@@ -19,11 +19,9 @@
 extern "C" {
 #endif
 
-// TODO: move this to a platform file
-#define ENCODE_LIMIT (((uint8_t)1) << 7)
-static const int32_t TNUMBER = 1;
-#define IS_LITTLE_ENDIAN() (*(uint8_t *)(&TNUMBER) != 0)
+#include "os.h "
 
+#define ENCODE_LIMIT (((uint8_t)1) << 7)
 #define ZIGZAGE(T, v) ((u##T)((v) >> (sizeof(T) * 8 - 1))) ^ (((u##T)(v)) << 1)  // zigzag encode
 #define ZIGZAGD(T, v) ((v) >> 1) ^ -((T)((v)&1))                                 // zigzag decode
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 32826f69ea..0a225581d9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_subdirectory(os)
 add_subdirectory(util)
 # add_subdirectory(common)
+add_subdirectory(dnode)
 
diff --git a/src/dnode/CMakeLists.txt b/src/dnode/CMakeLists.txt
index 47186130ea..1141d2e452 100644
--- a/src/dnode/CMakeLists.txt
+++ b/src/dnode/CMakeLists.txt
@@ -1,63 +1,6 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8...3.20)
-PROJECT(TDengine)
-
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/tsdb/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/sync/inc)
-INCLUDE_DIRECTORIES(${TD_ENTERPRISE_DIR}/src/inc)
-
-INCLUDE_DIRECTORIES(inc)
-AUX_SOURCE_DIRECTORY(src SRC)
-
-IF (TD_LINUX_64 AND JEMALLOC_ENABLED)
-  ADD_DEFINITIONS(-DTD_JEMALLOC_ENABLED -I${CMAKE_BINARY_DIR}/build/include -L${CMAKE_BINARY_DIR}/build/lib -Wl,-rpath,${CMAKE_BINARY_DIR}/build/lib -ljemalloc)
-  SET(LINK_JEMALLOC "-L${CMAKE_BINARY_DIR}/build/lib -ljemalloc")
-ELSE ()
-  SET(LINK_JEMALLOC "")
-ENDIF ()
-
-ADD_EXECUTABLE(taosd ${SRC})
-TARGET_LINK_LIBRARIES(taosd mnode monitor http tsdb twal vnode cJson lua lz4 balance sync ${LINK_JEMALLOC})
-
-IF (TD_SOMODE_STATIC)
-  TARGET_LINK_LIBRARIES(taosd taos_static)
-ELSE ()
-  TARGET_LINK_LIBRARIES(taosd taos)
-ENDIF ()
-
-IF (TD_ACCOUNT)
-  TARGET_LINK_LIBRARIES(taosd account)
-ENDIF ()
-
-IF (TD_GRANT)
-  TARGET_LINK_LIBRARIES(taosd grant)
-ENDIF ()
-
-IF (TD_MQTT)
-  TARGET_LINK_LIBRARIES(taosd mqtt)
-ENDIF ()
-
-IF (TD_TOPIC)
-  TARGET_LINK_LIBRARIES(taosd topic)
-ENDIF ()
-
-IF (TD_MODULE AND TD_LINUX)
-  TARGET_LINK_LIBRARIES(taosd module dl)
-ENDIF ()
-
-SET(PREPARE_ENV_CMD "prepare_env_cmd")
-SET(PREPARE_ENV_TARGET "prepare_env_target")
-ADD_CUSTOM_COMMAND(OUTPUT ${PREPARE_ENV_CMD}
-    POST_BUILD
-    COMMAND echo "make test directory"
-    DEPENDS taosd
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/cfg/
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/log/
-    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/data/
-    COMMAND ${CMAKE_COMMAND} -E echo dataDir ${TD_TESTS_OUTPUT_DIR}/data > ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
-    COMMAND ${CMAKE_COMMAND} -E echo logDir ${TD_TESTS_OUTPUT_DIR}/log  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
-    COMMAND ${CMAKE_COMMAND} -E echo charset UTF-8  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
-    COMMAND ${CMAKE_COMMAND} -E echo monitor 0  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
-    COMMENT "prepare taosd environment")
-ADD_CUSTOM_TARGET(${PREPARE_ENV_TARGET} ALL WORKING_DIRECTORY ${TD_EXECUTABLE_OUTPUT_PATH} DEPENDS ${PREPARE_ENV_CMD})
+aux_source_directory(source DNODE_SRC)
+add_executable(taosd ${DNODE_SRC})
+target_link_libraries(
+    taosd
+    PRIVATE os
+)
\ No newline at end of file
diff --git a/src/dnode/CMakeLists.txt.in b/src/dnode/CMakeLists.txt.in
new file mode 100644
index 0000000000..47186130ea
--- /dev/null
+++ b/src/dnode/CMakeLists.txt.in
@@ -0,0 +1,63 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8...3.20)
+PROJECT(TDengine)
+
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/tsdb/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/sync/inc)
+INCLUDE_DIRECTORIES(${TD_ENTERPRISE_DIR}/src/inc)
+
+INCLUDE_DIRECTORIES(inc)
+AUX_SOURCE_DIRECTORY(src SRC)
+
+IF (TD_LINUX_64 AND JEMALLOC_ENABLED)
+  ADD_DEFINITIONS(-DTD_JEMALLOC_ENABLED -I${CMAKE_BINARY_DIR}/build/include -L${CMAKE_BINARY_DIR}/build/lib -Wl,-rpath,${CMAKE_BINARY_DIR}/build/lib -ljemalloc)
+  SET(LINK_JEMALLOC "-L${CMAKE_BINARY_DIR}/build/lib -ljemalloc")
+ELSE ()
+  SET(LINK_JEMALLOC "")
+ENDIF ()
+
+ADD_EXECUTABLE(taosd ${SRC})
+TARGET_LINK_LIBRARIES(taosd mnode monitor http tsdb twal vnode cJson lua lz4 balance sync ${LINK_JEMALLOC})
+
+IF (TD_SOMODE_STATIC)
+  TARGET_LINK_LIBRARIES(taosd taos_static)
+ELSE ()
+  TARGET_LINK_LIBRARIES(taosd taos)
+ENDIF ()
+
+IF (TD_ACCOUNT)
+  TARGET_LINK_LIBRARIES(taosd account)
+ENDIF ()
+
+IF (TD_GRANT)
+  TARGET_LINK_LIBRARIES(taosd grant)
+ENDIF ()
+
+IF (TD_MQTT)
+  TARGET_LINK_LIBRARIES(taosd mqtt)
+ENDIF ()
+
+IF (TD_TOPIC)
+  TARGET_LINK_LIBRARIES(taosd topic)
+ENDIF ()
+
+IF (TD_MODULE AND TD_LINUX)
+  TARGET_LINK_LIBRARIES(taosd module dl)
+ENDIF ()
+
+SET(PREPARE_ENV_CMD "prepare_env_cmd")
+SET(PREPARE_ENV_TARGET "prepare_env_target")
+ADD_CUSTOM_COMMAND(OUTPUT ${PREPARE_ENV_CMD}
+    POST_BUILD
+    COMMAND echo "make test directory"
+    DEPENDS taosd
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/cfg/
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/log/
+    COMMAND ${CMAKE_COMMAND} -E make_directory ${TD_TESTS_OUTPUT_DIR}/data/
+    COMMAND ${CMAKE_COMMAND} -E echo dataDir ${TD_TESTS_OUTPUT_DIR}/data > ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
+    COMMAND ${CMAKE_COMMAND} -E echo logDir ${TD_TESTS_OUTPUT_DIR}/log  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
+    COMMAND ${CMAKE_COMMAND} -E echo charset UTF-8  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
+    COMMAND ${CMAKE_COMMAND} -E echo monitor 0  >> ${TD_TESTS_OUTPUT_DIR}/cfg/taos.cfg
+    COMMENT "prepare taosd environment")
+ADD_CUSTOM_TARGET(${PREPARE_ENV_TARGET} ALL WORKING_DIRECTORY ${TD_EXECUTABLE_OUTPUT_PATH} DEPENDS ${PREPARE_ENV_CMD})
diff --git a/src/dnode/source/dnode.c b/src/dnode/source/dnode.c
new file mode 100644
index 0000000000..75449ecd1a
--- /dev/null
+++ b/src/dnode/source/dnode.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "os.h"
+
+int main(int argc, char const *argv[]) {
+  printf("Hello world!\n");
+  return 0;
+}