Add __SYCL_EXPORT to declaration of contextSetExtendedDeleter

Signed-off-by: Stuart Adams <[email protected]>

Author: nyalloc

sycl/include/CL/sycl/detail/pi.hpp

@@ -99,7 +99,7 @@ using PiMemObjectType = ::pi_mem_type;
 using PiMemImageChannelOrder = ::pi_image_channel_order;
 using PiMemImageChannelType = ::pi_image_channel_type;
 
-void contextSetExtendedDeleter(const cl::sycl::context &constext,
+__SYCL_EXPORT void contextSetExtendedDeleter(const cl::sycl::context &constext,
                                pi_context_extended_deleter func,
                                void *user_data);