Fix CMake warning when looking for rocPRIM

cmake/SetupPackages.cmake

@@ -82,11 +82,11 @@ if (RAJA_ENABLE_HIP)
   endif()
 
   if (RAJA_ENABLE_EXTERNAL_ROCPRIM)
-    include(cmake/thirdparty/FindRocPRIM.cmake)
-    if (ROCPRIM_FOUND)
+    find_package(rocPRIM)
+    if (rocPRIM_FOUND)
       blt_import_library(
         NAME rocPRIM
-        INCLUDES ${ROCPRIM_INCLUDE_DIRS}
+        INCLUDES ${rocPRIM_INCLUDE_DIRS}
         TREAT_INCLUDES_AS_SYSTEM ON
         EXPORTABLE ON)
     else()

cmake/thirdparty/FindrocPRIM.cmake

@@ -0,0 +1,54 @@
+###############################################################################
+# Copyright (c) 2016-22, Lawrence Livermore National Security, LLC
+# and other RAJA project contributors. See the RAJA/LICENSE file for details.
+#
+# SPDX-License-Identifier: (BSD-3-Clause)
+###############################################################################
+
+#[=======================================================================[.rst:
+
+FindrocPRIM
+-------
+
+Finds the rocPRIM package.
+
+Result Variables
+^^^^^^^^^^^^^^^^
+
+This will define the following variables:
+
+``rocPRIM_FOUND``
+True if the system has the rocPRIM library.
+``rocPRIM_INCLUDE_DIRS``
+Include directories needed to use rocPRIM.
+
+Cache Variables
+^^^^^^^^^^^^^^^
+
+The following cache variables may also be set:
+
+``rocPRIM_INCLUDE_DIR``
+The directory containing ``rocprim.hpp``.
+
+#]=======================================================================]
+
+include (FindPackageHandleStandardArgs)
+
+find_path(rocPRIM_INCLUDE_DIR
+  NAMES rocprim/rocprim.hpp
+  HINTS
+    ${ROCPRIM_DIR}/
+    ${HIP_ROOT_DIR}/../
+  PATH_SUFFIXES
+    include
+    rocprim
+    rocprim/include)
+
+find_package_handle_standard_args(
+  rocPRIM
+  DEFAULT_MSG
+  rocPRIM_INCLUDE_DIR)
+
+if (rocPRIM_FOUND)
+  set(rocPRIM_INCLUDE_DIRS ${rocPRIM_INCLUDE_DIR})
+endif()