!4078 [LITE] Fix minddata lite build issues

Merge pull request !4078 from 章一智/minddata-lite-build-fix

mindspore/lite/CMakeLists.txt

@@ -133,6 +133,10 @@ if (BUILD_MINDDATA)
     set(OpenCV_DIR ${TOP_DIR}/third_party/opencv/build)
     find_package(OpenCV REQUIRED)
     include_directories(${OpenCV_INCLUDE_DIRS})
+    # json
+    if (NOT BUILD_CONVERTER)
+        include(${TOP_DIR}/cmake/external_libs/json.cmake)
+    endif()
     # eigen
     include_directories(${TOP_DIR}/third_party/eigen/)
     # jpeg-turbo

mindspore/lite/minddata/CMakeLists.txt

@@ -4,9 +4,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC -Wall -Wno-deprecated-declarations")
 set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -g2 -ggdb")
-if (CMAKE_BUILD_TYPE EQUAL "DEBUG")
-      set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -s")
-endif()
+set(CMAKE_SHARED_LINKER_FLAGS_RELEASE "${CMAKE_SHARED_LINKER_FLAGS} -s")
 
 AUX_SOURCE_DIRECTORY(${MINDDATA_DIR}/core MINDDATA_CORE_SRC_FILES)
 list(REMOVE_ITEM MINDDATA_CORE_SRC_FILES "${MINDDATA_DIR}/core/client.cc")