[SYCL] Remove SYCLCompat (#20662)

`SYCLCompat` was deprecated in 2025.3 and now being removed for next
major release.

Author: uditagarwal97

sycl/CMakeLists.txt

@@ -249,7 +249,6 @@ install(FILES
 file(GLOB_RECURSE HEADERS_IN_SYCL_DIR CONFIGURE_DEPENDS "${sycl_inc_dir}/sycl/*")
 file(GLOB_RECURSE HEADERS_IN_CL_DIR CONFIGURE_DEPENDS "${sycl_inc_dir}/CL/*")
 file(GLOB_RECURSE HEADERS_IN_STD_DIR CONFIGURE_DEPENDS "${sycl_inc_dir}/std/*")
-file(GLOB_RECURSE HEADERS_IN_SYCLCOMPAT_DIR CONFIGURE_DEPENDS "${sycl_inc_dir}/syclcompat/*" "${sycl_inc_dir}/syclcompat.hpp")
 
 string(REPLACE "${sycl_inc_dir}" "${SYCL_INCLUDE_BUILD_DIR}"
   OUT_HEADERS_IN_SYCL_DIR "${HEADERS_IN_SYCL_DIR}")
@@ -293,17 +292,13 @@ add_custom_command(
   COMMAND ${CMAKE_COMMAND} -E copy_directory ${sycl_inc_dir}/sycl ${SYCL_INCLUDE_BUILD_DIR}/sycl
   COMMAND ${CMAKE_COMMAND} -E copy_directory ${sycl_inc_dir}/CL ${SYCL_INCLUDE_BUILD_DIR}/CL
   COMMAND ${CMAKE_COMMAND} -E copy_directory ${sycl_inc_dir}/std ${SYCL_INCLUDE_BUILD_DIR}/std
-  COMMAND ${CMAKE_COMMAND} -E copy_directory ${sycl_inc_dir}/syclcompat ${SYCL_INCLUDE_BUILD_DIR}/syclcompat
-  COMMAND ${CMAKE_COMMAND} -E copy ${sycl_inc_dir}/syclcompat.hpp ${SYCL_INCLUDE_BUILD_DIR}/syclcompat.hpp
   COMMAND ${CMAKE_COMMAND} -E copy ${UR_HEADERS_TO_COPY} ${SYCL_INCLUDE_BUILD_DIR}
   COMMENT "Copying SYCL headers ...")
 
 # Copy SYCL headers from source to install directory
 install(DIRECTORY "${sycl_inc_dir}/sycl" DESTINATION ${SYCL_INCLUDE_DIR} COMPONENT sycl-headers)
 install(DIRECTORY "${sycl_inc_dir}/CL" DESTINATION ${SYCL_INCLUDE_DIR}/ COMPONENT sycl-headers)
 install(DIRECTORY "${sycl_inc_dir}/std" DESTINATION ${SYCL_INCLUDE_DIR} COMPONENT sycl-headers)
-install(DIRECTORY "${sycl_inc_dir}/syclcompat" DESTINATION ${SYCL_INCLUDE_DIR} COMPONENT sycl-headers)
-install(FILES "${sycl_inc_dir}/syclcompat.hpp" DESTINATION ${SYCL_INCLUDE_DIR} COMPONENT sycl-headers)
 install(FILES "${UNIFIED_RUNTIME_INCLUDE_DIR}/ur_api.h" DESTINATION ${SYCL_INCLUDE_DIR}
   COMPONENT sycl-headers)
 install(FILES "${UNIFIED_RUNTIME_INCLUDE_DIR}/ur_api_funcs.def" DESTINATION ${SYCL_INCLUDE_DIR}

sycl/doc/index.rst

@@ -14,7 +14,6 @@ Using oneAPI DPC++ for Application Development
    PreprocessorMacros
    cuda/contents
    Extensions <https://github.com/intel/llvm/tree/sycl/sycl/doc/extensions>
-   syclcompat/README.md
    FAQ
    EnvironmentVariables
    MultiTileCardWithLevelZero