refact

.gitignore

@@ -94,3 +94,6 @@ auto-save-list
 tramp
 .\#*
 TAGS
+
+deps/*
+!deps/CMakeLists.txt
\ No newline at end of file

CMakeLists.txt

+cmake_minimum_required(VERSION 3.16)
+
+project(
+    TDengine
+    VERSION 3.0
+    DESCRIPTION "An open-source big data platform designed and optimized for the Internet of Things(IOT)"
+)
+
+# ============================================================================
+# DEPENDENCIES
+# ============================================================================
+set(CMAKE_SUPPORT_DIR "${CMAKE_SOURCE_DIR}/cmake")
+
+function(cat IN_FILE OUT_FILE)
+    file(READ ${IN_FILE} CONTENTS)
+    file(APPEND ${OUT_FILE} "${CONTENTS}")
+endfunction(cat IN_FILE OUT_FILE)
+
+set(DEPS_TMP_FILE "${CMAKE_BINARY_DIR}/deps_tmp_CMakeLists.txt.in")
+configure_file("${CMAKE_SUPPORT_DIR}/deps_CMakeLists.txt.in" ${DEPS_TMP_FILE})
+
+## googletest
+option(BUILD_TEST "If build unit tests using googletest" ON)
+
+if(${BUILD_TEST})
+    cat("${CMAKE_SUPPORT_DIR}/gtest_CMakeLists.txt.in" ${DEPS_TMP_FILE})
+endif(${BUILD_TEST})
+
+## download dependencies
+configure_file(${DEPS_TMP_FILE} "${CMAKE_SOURCE_DIR}/deps/deps-download/CMakeLists.txt")
+execute_process(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/deps/deps-download")
+execute_process(COMMAND "${CMAKE_COMMAND}" --build .
+        WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/deps/deps-download")
+
+# deps
+add_subdirectory(deps)
+
+# src
+add_subdirectory(src)
+
+# tests (TODO)
\ No newline at end of file

cmake/deps_CMakeLists.txt.in

+cmake_minimum_required(VERSION 3.8)
+
+project(deps-download NONE)
+
+include(ExternalProject)
\ No newline at end of file

cmake/gtest_CMakeLists.txt.in

+
+# googletest
+ExternalProject_Add(googletest
+        GIT_REPOSITORY git@github.com:google/googletest.git
+        GIT_TAG master
+        SOURCE_DIR "${CMAKE_SOURCE_DIR}/deps/googletest"
+        BINARY_DIR "${CMAKE_BINARY_DIR}/googletest-build"
+        CONFIGURE_COMMAND ""
+        BUILD_COMMAND ""
+        INSTALL_COMMAND ""
+        TEST_COMMAND ""
+        )
\ No newline at end of file

deps/CMakeLists.txt

+if(${BUILD_TEST})
+    add_subdirectory(googletest)
+endif(${BUILD_TEST})

src/CMakeLists.txt

-# CMAKE_MINIMUM_REQUIRED(VERSION 2.8...3.20)
-PROJECT(TDengine)
-
-# Base compile
-ADD_SUBDIRECTORY(os)
-ADD_SUBDIRECTORY(common)
-ADD_SUBDIRECTORY(util)
-ADD_SUBDIRECTORY(tfs)
-ADD_SUBDIRECTORY(rpc)
-ADD_SUBDIRECTORY(client)
-ADD_SUBDIRECTORY(query)
-ADD_SUBDIRECTORY(kit)
-ADD_SUBDIRECTORY(plugins)
-ADD_SUBDIRECTORY(sync)
-ADD_SUBDIRECTORY(balance)
-ADD_SUBDIRECTORY(mnode)
-ADD_SUBDIRECTORY(vnode)
-ADD_SUBDIRECTORY(tsdb)
-ADD_SUBDIRECTORY(wal)
-ADD_SUBDIRECTORY(cq)
-ADD_SUBDIRECTORY(dnode)
-ADD_SUBDIRECTORY(connector/odbc)
-ADD_SUBDIRECTORY(connector/jdbc)
+add_subdirectory(os)