fix dlopen bug

build.sh

@@ -588,6 +588,7 @@ build_lite()
         COMPILE_MINDDATA_LITE="off"
         CMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE}
         CMAKE_TOOLCHAIN_NAME=${TOOLCHAIN_NAME}
+        CMAKE_BUILD_TYPE=${LITE_BUILD_TYPE}
       else
         CMAKE_TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake
         ANDROID_NATIVE_API_LEVEL="19"

mindspore/lite/src/common/dynamic_library_loader.cc

@@ -57,7 +57,7 @@ int DynamicLibraryLoader::Open(const char *lib_path) {
 #endif
 
   if (handler_ == nullptr) {
-    LOG_ERROR("open path failed");
+    LOG_ERROR("handler is nullptr.");
     return RET_ERROR;
   }
   return RET_OK;

mindspore/lite/tools/converter/converter.cc

@@ -77,15 +77,16 @@ schema::MetaGraphT *Converter::Convert(const std::unique_ptr<converter::Flags> &
   }
 
   // load plugin
+  static std::vector<std::shared_ptr<DynamicLibraryLoader>> dl_loaders;
   if (!flag->pluginsPath.empty()) {
-    DynamicLibraryLoader dynamic_library_loader{};
     for (auto &path : flag->pluginsPath) {
-      auto status = dynamic_library_loader.Open(path.c_str());
+      auto dl_loader = std::make_shared<DynamicLibraryLoader>();
+      auto status = dl_loader->Open(path.c_str());
       if (status != RET_OK) {
         MS_LOG(ERROR) << "open dynamic library failed. " << path;
         return nullptr;
       }
-      dynamic_library_loader.Close();
+      dl_loaders.emplace_back(dl_loader);
     }
   }
 

mindspore/lite/tools/converter/registry/CMakeLists.txt

@@ -15,3 +15,8 @@ add_library(mslite_converter_plugin SHARED ${REG_SRC})
 target_link_libraries(mslite_converter_plugin mindspore::glog)
 add_dependencies(mslite_converter_plugin fbs_src)
 add_dependencies(mslite_converter_plugin fbs_inner_src)
+
+if("${CMAKE_BUILD_TYPE}" STREQUAL "Release" AND (NOT WIN32))
+    add_custom_command(TARGET mslite_converter_plugin POST_BUILD COMMAND strip
+            ${CMAKE_CURRENT_BINARY_DIR}/libmslite_converter_plugin.so)
+endif()