diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..dee9b5a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*#*
\ No newline at end of file
diff --git a/server/imserver/CMakeLists.txt b/server/imserver/CMakeLists.txt
new file mode 100644
index 0000000..0cfd074
--- /dev/null
+++ b/server/imserver/CMakeLists.txt
@@ -0,0 +1,136 @@
+project(imserver)
+cmake_minimum_required(VERSION 2.8)
+
+set(GAME_ID 2006)
+
+if (${RELEASE})
+  set(CMAKE_BUILD_TYPE "Release")
+  message("release mode")
+else()
+  set(CMAKE_BUILD_TYPE "Debug")
+  message("debug mode")
+endif()
+
+set(LIB_DIR "ubuntu20.04_g++-9")
+message(LIB_DIR: ${LIB_DIR} )
+
+set(CMAKE_CXX_FLAGS_RELEASE "-O3 -Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DNDEBUG")
+set(CMAKE_CXX_FLAGS_DEBUG "-Wall -g -std=gnu++1z -DGAME_ID=${GAME_ID} -DDEBUG")
+
+include_directories(
+  AFTER
+  ../../third_party/a8
+  ../../third_party/f8
+  /usr/include/mysql
+  /usr/include/jsoncpp
+  /usr/include/hiredis
+  /usr/include/glm
+  ../../third_party
+  ../../third_party/behaviac/inc
+  ../../third_party/recastnavigation/Recast/Include
+  ../../third_party/recastnavigation/Detour/Include
+  ../../third_party/recastnavigation/DetourTileCache/Include
+  behaviac_generated/types
+  behaviac_generated/types/internal
+  .
+)
+
+link_directories(
+  /usr/lib64/mysql
+  /usr/local/lib
+  ../../third_party/behaviac/lib/${LIB_DIR}
+)
+
+aux_source_directory(../../third_party/a8/a8
+  SRC_LIST
+)
+
+aux_source_directory(../../third_party/f8/f8
+  SRC_LIST
+)
+
+aux_source_directory(../../third_party/recastnavigation/Recast/Source
+  SRC_LIST
+)
+
+aux_source_directory(../../third_party/recastnavigation/Detour/Source
+  SRC_LIST
+)
+
+aux_source_directory(../../third_party/recastnavigation/DetourTileCache/Source
+  SRC_LIST
+)
+
+aux_source_directory(behaviac_generated/types/internal
+  SRC_LIST
+)
+
+aux_source_directory(mtb
+  SRC_LIST
+)
+
+aux_source_directory(mt
+  SRC_LIST
+)
+
+aux_source_directory(buff
+  SRC_LIST
+)
+
+execute_process(
+  COMMAND touch -a cs_proto.pb.h
+  COMMAND touch -a cs_proto.pb.cc
+  COMMAND touch -a cs_msgid.pb.h
+  COMMAND touch -a cs_msgid.pb.cc
+  COMMAND touch -a ss_proto.pb.h
+  COMMAND touch -a ss_proto.pb.cc
+  COMMAND touch -a ss_msgid.pb.h
+  COMMAND touch -a ss_msgid.pb.cc
+  )
+aux_source_directory(.
+  SRC_LIST
+)
+
+set(EXECUTABLE_OUTPUT_PATH
+  ${PROJECT_BINARY_DIR}/../bin
+)
+
+add_executable(
+  imserver${GAME_ID} ${SRC_LIST}
+)
+
+add_custom_target(script_pb_protocol ALL)
+add_custom_command(TARGET script_pb_protocol
+  PRE_BUILD
+  COMMAND python ../../third_party/tools/scripts/construct/build_pb.py --cpp_out=. --pb_files=cs_proto,cs_msgid,ss_proto,ss_msgid)
+add_dependencies(imserver${GAME_ID} script_pb_protocol)
+
+target_link_libraries(
+  imserver${GAME_ID}
+  pthread
+  mysqlclient
+  protobuf
+  rt
+  dl
+  util
+  crypto
+  ssl
+  jsoncpp
+  curl
+  hiredis
+  tinyxml2
+  backtrace
+  )
+
+if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+  target_link_libraries(
+    imserver${GAME_ID}
+    behaviac_gcc_debug
+    )
+else()
+  target_link_libraries(
+    imserver${GAME_ID}
+    tcmalloc
+    behaviac_gcc_release
+    )
+endif()