Use OV threading backend instead of direct TBB (openvinotoolkit#230)

* Use OV threading backend instead of direct TBB

* Update CMakeLists.txt

CMakeLists.txt

@@ -45,9 +45,13 @@ if(BUILD_CPP_EXTENSION)
     endif()
 
     # Find OpenVINODeveloperPackage first to compile with SDL flags
-    find_package(OpenVINODeveloperPackage ${openvino_tokenizers_VERSION} QUIET PATHS "${OpenVINO_DIR}")
+    find_package(OpenVINODeveloperPackage ${openvino_tokenizers_VERSION} QUIET
+                 COMPONENTS Runtime Threading
+                 PATHS "${OpenVINO_DIR}")
     if(NOT OpenVINODeveloperPackage_FOUND)
-        find_package(OpenVINO  ${openvino_tokenizers_VERSION} REQUIRED COMPONENTS Runtime OPTIONAL_COMPONENTS TensorFlow PATHS "${OpenVINO_DIR_PY}")
+        find_package(OpenVINO ${openvino_tokenizers_VERSION} REQUIRED
+                     COMPONENTS Runtime Threading
+                     PATHS "${OpenVINO_DIR_PY}")
     endif()
 
     add_subdirectory(src)

src/CMakeLists.txt

@@ -286,9 +286,6 @@ function(ov_tokenizers_link_pcre2)
   target_compile_definitions(${TARGET_NAME} PRIVATE PCRE2_CODE_UNIT_WIDTH=8)
 endfunction()
 
-find_package(TBB 2021.2 REQUIRED
-             PATHS "${OpenVINO_DIR_PY}")
-
 #
 # Build library
 #
@@ -309,7 +306,7 @@ string(REPLACE " " ";" extra_flags "${c_cxx_flags} ${cxx_flags}")
 set_target_properties(${TARGET_NAME} PROPERTIES COMPILE_OPTIONS "${extra_flags}")
 
 target_compile_definitions(${TARGET_NAME} PRIVATE IMPLEMENT_OPENVINO_EXTENSION_API)
-target_link_libraries(${TARGET_NAME} PRIVATE openvino::runtime TBB::tbb)
+target_link_libraries(${TARGET_NAME} PRIVATE openvino::runtime)
 
 #
 # Post build steps to copy core_tokenizers dependencies