Add config for HIP build (#260)

* Add an amdclang host config

CMakeLists.txt

@@ -16,7 +16,7 @@ cmake_minimum_required(VERSION 3.18)
 ##########################################################################
 
 project(CARE
-        LANGUAGES CXX
+        LANGUAGES C CXX
         VERSION 0.12.0)
 
 include(${PROJECT_SOURCE_DIR}/cmake/Setup.cmake)

configs/lc/toss_4_x86_64_ib_cray/amdclang.cmake

@@ -0,0 +1,16 @@
+##############################################################################
+# Copyright (c) 2020-24, Lawrence Livermore National Security, LLC and CARE
+# project contributors. See the CARE LICENSE file for details.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+##############################################################################
+
+set(COMPILER_BASE "/usr/tce/packages/rocmcc/rocmcc-6.1.0-magic" CACHE PATH "")
+set(CMAKE_C_COMPILER "${COMPILER_BASE}/bin/amdclang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "${COMPILER_BASE}/bin/amdclang++" CACHE PATH "")
+
+set(ENABLE_HIP ON CACHE BOOL "Enable Hip")
+set(ROCM_PATH "/usr/tce/packages/rocmcc/rocmcc-6.1.0-magic" CACHE PATH "")
+set(CMAKE_HIP_ARCHITECTURES "gfx942:xnack+" CACHE STRING "")
+
+set(CARE_ENABLE_IMPLICIT_CONVERSIONS OFF CACHE BOOL "Enable implicit conversions")