From c8a37980419e8b7f0193d058fb6f8f01b458cfca Mon Sep 17 00:00:00 2001
From: Rahul Sathe <150351592+rrsathe@users.noreply.github.com>
Date: Wed, 31 Dec 2025 06:38:44 +0530
Subject: [PATCH] Work around broken IntelSYCLConfig.cmake in Intel oneAPI
 2025.x (#18345)

* cmake: work around broken IntelSYCLConfig.cmake in oneAPI 2025.x

* [AI] sycl: auto-detect and skip incompatible IntelSYCL package

Automatically detect compiler versions with incompatible IntelSYCL
CMake configuration files and fall back to manual SYCL flags instead
of requiring users to set options manually.

Fixes build failures with oneAPI 2025.x where IntelSYCLConfig.cmake
has SYCL_FEATURE_TEST_EXTRACT invocation errors.

* refactor: improve SYCL provider handling and error messages in CMake configuration

* refactor: enhance SYCL provider validation and error handling in CMake configuration

* ggml-sycl: wrap find_package(IntelSYCL) to prevent build crashes
---
 ggml/src/ggml-sycl/CMakeLists.txt | 44 +++++++++++++++++++++++++++++--
 1 file changed, 42 insertions(+), 2 deletions(-)

diff --git a/ggml/src/ggml-sycl/CMakeLists.txt b/ggml/src/ggml-sycl/CMakeLists.txt
index 88f29221bb..51594fb88e 100644
--- a/ggml/src/ggml-sycl/CMakeLists.txt
+++ b/ggml/src/ggml-sycl/CMakeLists.txt
@@ -36,7 +36,47 @@ if (WIN32)
     endif()
 endif()
 
-find_package(IntelSYCL)
+macro(detect_and_find_package package_name)
+    set(test_source "
+    cmake_minimum_required(VERSION ${CMAKE_VERSION})
+    project(check_package LANGUAGES CXX)
+    find_package(${package_name} QUIET)
+    ")
+
+    set(test_dir "${CMAKE_CURRENT_BINARY_DIR}/check_package_${package_name}")
+    file(WRITE "${test_dir}/CMakeLists.txt" "${test_source}")
+
+    set(cmake_args "")
+    if(CMAKE_GENERATOR)
+        list(APPEND cmake_args "-G" "${CMAKE_GENERATOR}")
+    endif()
+    if(CMAKE_GENERATOR_PLATFORM)
+        list(APPEND cmake_args "-A" "${CMAKE_GENERATOR_PLATFORM}")
+    endif()
+    if(CMAKE_GENERATOR_TOOLSET)
+        list(APPEND cmake_args "-T" "${CMAKE_GENERATOR_TOOLSET}")
+    endif()
+    if(CMAKE_CXX_COMPILER)
+        list(APPEND cmake_args "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}")
+    endif()
+
+    execute_process(
+        COMMAND ${CMAKE_COMMAND} ${cmake_args} .
+        WORKING_DIRECTORY "${test_dir}"
+        RESULT_VARIABLE result
+        OUTPUT_QUIET
+        ERROR_QUIET
+    )
+
+    if(result EQUAL 0)
+        find_package(${package_name} ${ARGN})
+    else()
+        message(WARNING "Detection of ${package_name} failed. The package might be broken or incompatible.")
+        set(${package_name}_FOUND FALSE)
+    endif()
+endmacro()
+
+detect_and_find_package(IntelSYCL)
 if (IntelSYCL_FOUND)
     # Use oneAPI CMake when possible
     target_link_libraries(ggml-sycl PRIVATE IntelSYCL::SYCL_CXX)
@@ -190,4 +230,4 @@ endif()
 if (GGML_SYCL_DEVICE_ARCH)
     target_compile_options(ggml-sycl PRIVATE -Xsycl-target-backend --offload-arch=${GGML_SYCL_DEVICE_ARCH})
     target_link_options(ggml-sycl PRIVATE -Xsycl-target-backend --offload-arch=${GGML_SYCL_DEVICE_ARCH})
-endif()
+endif()
\ No newline at end of file