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# MIT License
#
# Copyright (c) 2018-2023 Advanced Micro Devices, Inc. All rights reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
list(APPEND CMAKE_PREFIX_PATH $ENV{ROCM_PATH} $ENV{ROCM_PATH}/hip $ENV{ROCM_PATH})
if(CMAKE_CXX_COMPILER MATCHES ".*/nvcc$" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
# Compiling for CUDA
find_package(hip REQUIRED CONFIG PATHS $ENV{ROCM_PATH})
if((HIP_COMPILER STREQUAL "clang"))
# TODO: The HIP package on NVIDIA platform is incorrect at few versions
set(HIP_COMPILER "nvcc" CACHE STRING "HIP Compiler" FORCE)
endif()
else()
# compiling for ROCm
message("Looking in $ENV{ROCM_PATH}...")
find_package(hip REQUIRED CONFIG PATHS $ENV{ROCM_PATH})
endif()
if(HIP_COMPILER STREQUAL "nvcc")
# NVCC requires some additional setup
include(SetupNVCC)
elseif(HIP_COMPILER STREQUAL "clang")
if(NOT (CMAKE_CXX_COMPILER MATCHES ".*hipcc$" OR CMAKE_CXX_COMPILER MATCHES ".*clang\\+\\+"))
message(FATAL_ERROR "On ROCm platform 'hipcc' or HIP-aware Clang must be used as C++ compiler.")
endif()
else()
message(FATAL_ERROR "HIP_COMPILER must be `clang` (AMD ROCm platform)")
endif()
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