Generalized OpenCL handling (#15253)

* Squashed commit of the following:

commit 62c992f6a0bc3a2f559faac6912be9c5632a359f
Author: Ilya Lavrenov <ilya.lavrenov@intel.com>
Date:   Sun Jan 22 11:38:18 2023 +0400

    Generalized OpenCL handling

* Updates

* Fixes

* Update thirdparty/CMakeLists.txt

test

* Fixed build with CL/cl2.hpp

* Fixes

* Fixes

* Fixed compilation flags

* Fixed build with target OpenCL 120

* Don't use cache

docs/snippets/CMakeLists.txt

@@ -20,36 +20,8 @@ file(GLOB SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/*.cpp"
                   "${CMAKE_CURRENT_SOURCE_DIR}/src/*.c"
                   "${CMAKE_CURRENT_SOURCE_DIR}/gpu/*.cpp")
 
-find_package(OpenCL)
-find_path(OpenCL_HPP_INCLUDE_DIR
-    NAMES
-      CL/opencl.hpp OpenCL/opencl.hpp
-    HINTS
-      ${opencl_root_hints}
-      ENV "PROGRAMFILES(X86)"
-      ENV AMDAPPSDKROOT
-      ENV INTELOCLSDKROOT
-      ENV NVSDKCOMPUTE_ROOT
-      ENV CUDA_PATH
-      ENV ATISTREAMSDKROOT
-      ENV OCL_ROOT
-    PATH_SUFFIXES
-      include
-      OpenCL/common/inc
-      "AMD APP/include")
-
-if(TARGET OpenCL)
-    # Use OpenCL CPP headers from sources if present
-    set(OpenCL_HEADERS ${OPENCL_HEADERS_DIR})
-    set(OpenCL_LIB "OpenCL")
-elseif(OpenCL_HPP_INCLUDE_DIR)
-    # Append OpenCL CPP headers to C headers and use both
-    set(OpenCL_HEADERS ${OpenCL_INCLUDE_DIR} ${OpenCL_HPP_INCLUDE_DIR})
-    set(OpenCL_LIB "OpenCL::OpenCL")
-endif()
-
-# remove GPU remote snippets if OCL hasn't been found
-if (NOT (OpenCL_FOUND AND OpenCL_HEADERS))
+# remove GPU remote snippets if OpenCL hasn't been found
+if (NOT TARGET OpenCL::OpenCL)
     list(REMOVE_ITEM SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/gpu/context_sharing_va.cpp"
                              "${CMAKE_CURRENT_SOURCE_DIR}/gpu/context_sharing.cpp"
                              "${CMAKE_CURRENT_SOURCE_DIR}/gpu/preprocessing.cpp"
@@ -98,9 +70,8 @@ target_include_directories(${TARGET_NAME} PRIVATE "${OpenVINO_SOURCE_DIR}/src/in
                                                   "${OpenVINO_SOURCE_DIR}/src/frontends/common/include"
                                                   "${OpenVINO_SOURCE_DIR}/src/core/template_extension/new/")
 
-if(OpenCL_FOUND AND OpenCL_HEADERS)
-    target_link_libraries(${TARGET_NAME} PRIVATE ${OpenCL_LIB})
-    target_include_directories(${TARGET_NAME} PRIVATE ${OpenCL_HEADERS})
+if(TARGET OpenCL::OpenCL)
+    target_link_libraries(${TARGET_NAME} PRIVATE OpenCL::OpenCL)
 
     if(libva_FOUND)
         target_compile_definitions(${TARGET_NAME} PRIVATE ENABLE_LIBVA)

docs/snippets/gpu/context_sharing.cpp

@@ -1,5 +1,4 @@
 #include <openvino/runtime/core.hpp>
-#define OV_GPU_USE_OPENCL_HPP
 #include <openvino/runtime/intel_gpu/ocl/ocl.hpp>
 
 cl::Context get_ocl_context(); // a function which returns cl context created on the app side

docs/snippets/gpu/context_sharing_va.cpp

@@ -1,6 +1,5 @@
 #ifdef ENABLE_LIBVA
 #include <openvino/runtime/core.hpp>
-#define OV_GPU_USE_OPENCL_HPP
 #include <openvino/runtime/intel_gpu/ocl/va.hpp>
 #include <openvino/runtime/intel_gpu/properties.hpp>
 #include <openvino/core/preprocess/pre_post_process.hpp>

docs/snippets/gpu/preprocessing.cpp

@@ -1,5 +1,4 @@
 #include <openvino/runtime/core.hpp>
-#define OV_GPU_USE_OPENCL_HPP
 #include <openvino/runtime/intel_gpu/ocl/ocl.hpp>
 #include <openvino/runtime/intel_gpu/properties.hpp>
 #include <openvino/core/preprocess/pre_post_process.hpp>

docs/snippets/gpu/queue_sharing.cpp

@@ -1,5 +1,4 @@
 #include <openvino/runtime/core.hpp>
-#define OV_GPU_USE_OPENCL_HPP
 #include <openvino/runtime/intel_gpu/ocl/ocl.hpp>
 
 

docs/snippets/gpu/remote_objects_creation.cpp

@@ -1,7 +1,5 @@
 #include <openvino/runtime/core.hpp>
 #include <openvino/runtime/intel_gpu/properties.hpp>
-
-#define OV_GPU_USE_OPENCL_HPP
 #include <openvino/runtime/intel_gpu/ocl/ocl.hpp>
 
 #ifdef WIN32