Build error fix

- OpenCL header dependency fix
- Missing PI_API fix

Author: dongkyunahn-intel

sycl/plugins/esimd_cpu/CMakeLists.txt

@@ -3,7 +3,7 @@
 # Create Shared library for libpi_esimd_cpu.so.
 
 include_directories("${sycl_inc_dir}")
-include_directories(${OPENCL_INCLUDE})
+include_directories(${OpenCL_INCLUDE_DIR})
 include_directories(${LIBCMRT_INCLUDE})
 
 add_library(pi_esimd_cpu SHARED
@@ -14,7 +14,7 @@ add_library(pi_esimd_cpu SHARED
 add_dependencies(sycl-toolchain pi_esimd_cpu)
 
 add_dependencies(pi_esimd_cpu
-  ocl-headers)
+  OpenCL-Headers)
 
 target_link_libraries(pi_esimd_cpu PRIVATE sycl)
 set_target_properties(pi_esimd_cpu PROPERTIES LINKER_LANGUAGE CXX)

sycl/plugins/esimd_cpu/pi_esimd_cpu.cpp

@@ -516,6 +516,18 @@ pi_result piPlatformGetInfo(pi_platform Platform, pi_platform_info ParamName,
   return PI_SUCCESS;
 }
 
+pi_result piextKernelCreateWithNativeHandle(pi_native_handle, pi_context, bool,
+                                            pi_kernel *) {
+  DIE_NO_IMPLEMENTATION;
+  return PI_SUCCESS;
+}
+
+pi_result piextKernelGetNativeHandle(pi_kernel Kernel,
+                                     pi_native_handle *NativeHandle) {
+  DIE_NO_IMPLEMENTATION;
+  return PI_SUCCESS;
+}
+
 pi_result piextPlatformGetNativeHandle(pi_platform Platform,
                                        pi_native_handle *NativeHandle) {
   DIE_NO_IMPLEMENTATION;