[SYCL] add include/sycl_wrappers header search directory for sycl device target

compilations

Signed-off-by: Vladimir Lazarev <[email protected]>

Author: vladimirlaz

clang/lib/Driver/ToolChains/Clang.cpp

@@ -1113,6 +1113,16 @@ void Clang::AddPreprocessingOptions(Compilation &C, const JobAction &JA,
   if (JA.isOffloading(Action::OFK_Cuda))
     getToolChain().AddCudaIncludeArgs(Args, CmdArgs);
 
+  // Add include directories for SYCL
+  if (!Args.hasArg(options::OPT_nobuiltininc) &&
+      getToolChain().getTriple().isSYCLDeviceEnvironment()) {
+    SmallString<128> P(D.ResourceDir);
+    llvm::sys::path::append(P, "include");
+    llvm::sys::path::append(P, "sycl_wrappers");
+    CmdArgs.push_back("-internal-isystem");
+    CmdArgs.push_back(Args.MakeArgString(P));
+  }
+
   // Add -i* options, and automatically translate to
   // -include-pch/-include-pth for transparent PCH support. It's
   // wonky, but we include looking for .gch so we can support seamless

clang/lib/Headers/CMakeLists.txt

@@ -183,6 +183,12 @@ install(
   PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
   DESTINATION lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}/include/cuda_wrappers)
 
+install(
+  FILES ${sycl_wrapper_files}
+  COMPONENT clang-headers
+  PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
+  DESTINATION lib${LLVM_LIBDIR_SUFFIX}/clang/${CLANG_VERSION}/include/sycl_wrappers)
+
 if (NOT CMAKE_CONFIGURATION_TYPES) # don't add this for IDE's.
   add_llvm_install_targets(install-clang-headers
                            DEPENDS clang-headers