Use Intel OpenMP headers in SYCL CI

Author: allnes

scripts/ci/sycl_x86_setup.py

@@ -200,11 +200,17 @@ def setup_unix_compilers(sycl_root: Path) -> None:
             main_error("Unable to locate libiomp5.so for the SYCL toolchain")
 
         resource_dir = Path(capture([str(cxx_path), "-print-resource-dir"]))
-        openmp_header = resource_dir / "include" / "omp.h"
-        if not openmp_header.is_file():
+        openmp_header = find_file(
+            [
+                resource_dir / "include",
+                sycl_root,
+                Path("/opt/intel/oneapi"),
+            ],
+            "omp.h",
+        )
+        if openmp_header is None:
             main_error(
-                "Unable to locate compiler-provided omp.h under "
-                f"{resource_dir / 'include'}"
+                "Unable to locate Intel-provided omp.h under the SYCL toolchain"
             )
 
         write_env("ITLABAI_OPENMP_FLAGS", "-fopenmp=libiomp5")