[SYCL][NATIVECPU] Point oneAPI Construction Kit tag to main branch (#12940)

This PR changes the git tag for the oneAPI Construction Kit, pointing to
a commit in the `main` branch. It also adds CMake variables to either
use a local checkout of the OCK, or overwrite the git repo/tag used by
`FetchContent`.

Author: PietroGhg

sycl/doc/design/SYCLNativeCPU.md

@@ -46,6 +46,9 @@ python3 buildbot/configure.py \
   --cmake-opt=-DNATIVECPU_USE_OCK=Off
 ```
 
+By default the oneAPI Construction Kit is pulled at the project's configure time using CMake `FetchContent`. This behaviour can be overridden by setting `NATIVECPU_OCK_USE_FETCHCONTENT=Off` and `OCK_SOURCE_DIR=<path>`
+in order to use a local checkout of the oneAPI Construction Kit. The CMake variables `OCK_GIT_TAG` and `OCK_GIT_REPO` can be used to override the default git tag and repository used by `FetchContent`.
+
 The SYCL Native CPU device needs to be selected at runtime by setting the environment variable `ONEAPI_DEVICE_SELECTOR=native_cpu:cpu`. 
 
 # Supported features and current limitations

sycl/plugins/native_cpu/CMakeLists.txt

@@ -23,32 +23,67 @@ add_sycl_plugin(native_cpu
     UnifiedRuntimeCommon
 )
 
+set(OCK_SOURCE_DIR "" CACHE PATH "Root of the local checkout of the oneAPI Construction Kit")
+set(OCK_GIT_REPO "" CACHE STRING "Git repository for the oneAPI Construction Kit FetchContent")
+set(OCK_GIT_TAG "" CACHE STRING "Git tag for the oneAPI Construction Kit FetchContent")
+option(NATIVECPU_OCK_USE_FETCHCONTENT "Use FetchContent to acquire oneAPI Construction Kit source code" On)
 
 if(NATIVECPU_USE_OCK)
-  include(FetchContent)
-  FetchContent_Declare(oneapi-ck
-   GIT_REPOSITORY https://github.com/codeplaysoftware/oneapi-construction-kit.git
-   # commit 62090f9d469a30e0595f445ff664ea2ecfe77b44
-   # Merge: 6151546a af33ddfb
-   # Author: PietroGhg <[email protected]>
-   # Date:   Thu Feb 29 12:46:49 2024 +0100
-   # Merge pull request #385 from PietroGhg/pietro/multi_llvm_include
-   # [NATIVECPU] Avoid specifying include path manually for multi_llvm and Native CPU
-   GIT_TAG  62090f9d469a30e0595f445ff664ea2ecfe77b44
-  )
-  FetchContent_GetProperties(oneapi-ck)
-  if(NOT oneapi-ck_POPULATED)
-    message(STATUS "Cloning oneAPI Construction Kit")
-    FetchContent_Populate(oneapi-ck)
-    message(STATUS "oneAPI Construction Kit cloned in ${oneapi-ck_SOURCE_DIR}")
-    set(CA_NATIVE_CPU 1)
-    add_subdirectory(${oneapi-ck_SOURCE_DIR} ${oneapi-ck_BINARY_DIR} EXCLUDE_FROM_ALL)
+  if(NATIVECPU_OCK_USE_FETCHCONTENT)
+    set(OCK_GIT_INTERNAL_REPO "https://github.com/codeplaysoftware/oneapi-construction-kit.git")
+    # commit 342f06e2bba2ad5c3bb3773505fce1d0e3f872d9
+    # Merge: 51c1b31c d74b3e1a
+    # Author: Harald van Dijk <[email protected]>
+    # Date:   Thu Mar 7 14:19:58 2024 +0000
+    # Merge pull request #397 from hvdijk/ignore-gl_test
+    # Ignore test_gl test.
+    set(OCK_GIT_INTERNAL_TAG  342f06e2bba2ad5c3bb3773505fce1d0e3f872d9)
+
+    # Overwrite OCK_GIT_INTERNAL_REPO/OCK_GIT_INTERNAL_TAG if the corresponding options are set
+    if(OCK_GIT_REPO)
+      set(OCK_GIT_INTERNAL_REPO "${OCK_GIT_REPO}")
+    endif()
+    if(OCK_GIT_TAG)
+      set(OCK_GIT_INTERNAL_TAG "${OCK_GIT_TAG}")
+    endif()
+    include(FetchContent)
+    FetchContent_Declare(oneapi-ck
+     GIT_REPOSITORY "${OCK_GIT_INTERNAL_REPO}"
+     GIT_TAG "${OCK_GIT_INTERNAL_TAG}"
+    )
+    FetchContent_GetProperties(oneapi-ck)
+    if(NOT oneapi-ck_POPULATED)
+      message(STATUS "Cloning oneAPI Construction Kit from ${OCK_GIT_INTERNAL_REPO}, tag ${OCK_GIT_INTERNAL_TAG}")
+      FetchContent_Populate(oneapi-ck)
+      message(STATUS "oneAPI Construction Kit cloned in ${oneapi-ck_SOURCE_DIR}")
+      set(OCK_SOURCE_DIR_INTERNAL ${oneapi-ck_SOURCE_DIR})
+      set(OCK_BINARY_DIR_INTERNAL ${oneapi-ck_BINARY_DIR})
+    endif()
+  elseif(OCK_SOURCE_DIR)
+    set(OCK_SOURCE_DIR_INTERNAL "${OCK_SOURCE_DIR}")
+    set(OCK_BINARY_DIR_INTERNAL "${CMAKE_CURRENT_BINARY_DIR}/oneapi-construction-kit")
+  else()
+    message(FATAL_ERROR "NATIVECPU_OCK_USE_FETCHCONTENT is Off and OCK_SOURCE_DIR not set")
   endif()
-  install(TARGETS multi_llvm
+
+  set(CA_ENABLE_API "cl" CACHE STRING "" FORCE)
+  add_subdirectory(
+    ${OCK_SOURCE_DIR_INTERNAL}
+    ${OCK_BINARY_DIR_INTERNAL} EXCLUDE_FROM_ALL)
+
+  install(TARGETS compiler-pipeline
+  EXPORT;LLVMExports
+          LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT compiler-pipeline
+          ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT compiler-pipeline
+          RUNTIME DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT compiler-pipeline)
+  set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS compiler-pipeline)
+  install(TARGETS vecz
   EXPORT;LLVMExports
-        LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT multi_llvm
-        ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT multi_llvm
-        RUNTIME DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT multi_llvm)
+          LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT vecz
+          ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT vecz
+          RUNTIME DESTINATION lib${LLVM_LIBDIR_SUFFIX} COMPONENT vecz)
+  set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS vecz)
+  install(TARGETS multi_llvm EXPORT;LLVMExports)
   set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS multi_llvm)
   target_compile_definitions(LLVMSYCLLowerIR PRIVATE  NATIVECPU_USE_OCK)
   target_include_directories(LLVMSYCLLowerIR PRIVATE