# MIT License
#
# Copyright (c) 2018 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.

# ###########################
# hipCUB dependencies
# ###########################

# HIP dependency is handled earlier in the project cmake file
# when VerifyCompiler.cmake is included.

# For downloading, building, and installing required dependencies
include(cmake/DownloadProject.cmake)

# GIT
find_package(Git REQUIRED)
if (NOT Git_FOUND)
  message(FATAL_ERROR "Please ensure Git is installed on the system")
endif()

# CUB (only for CUDA platform)
if(HIP_PLATFORM STREQUAL "nvcc")
  if(NOT DEFINED CUB_INCLUDE_DIR)
    file(
      DOWNLOAD https://github.com/NVlabs/cub/archive/1.8.0.zip
      ${CMAKE_CURRENT_BINARY_DIR}/cub-1.8.0.zip
      STATUS cub_download_status LOG cub_download_log
    )
    list(GET cub_download_status 0 cub_download_error_code)
    if(cub_download_error_code)
      message(FATAL_ERROR "Error: downloading "
        "https://github.com/NVlabs/cub/archive/1.8.0.zip failed "
        "error_code: ${cub_download_error_code} "
        "log: ${cub_download_log} "
      )
    endif()

    execute_process(
      COMMAND ${CMAKE_COMMAND} -E tar xzf ${CMAKE_CURRENT_BINARY_DIR}/cub-1.8.0.zip
      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
      RESULT_VARIABLE cub_unpack_error_code
    )
    if(cub_unpack_error_code)
      message(FATAL_ERROR "Error: unpacking ${CMAKE_CURRENT_BINARY_DIR}/cub-1.8.0.zip failed")
    endif()
    set(CUB_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/cub-1.8.0/ CACHE PATH "")
  endif()
endif()

# rocPRIM (only for ROCm platform)
if(HIP_PLATFORM STREQUAL "hcc")
  if(NOT DEFINED rocprim_DIR)
    message(STATUS "Downloading and building rocPRIM.")
    set(rocprim_DIR "${CMAKE_CURRENT_BINARY_DIR}/rocprim" CACHE PATH "")
    download_project(
      PROJ                rocprim
      GIT_REPOSITORY      https://github.com/ROCmSoftwarePlatform/rocPRIM.git
      GIT_TAG             master
      INSTALL_DIR         ${rocprim_DIR}
      CMAKE_ARGS          -DBUILD_TEST=OFF -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> -DCMAKE_PREFIX_PATH=/opt/rocm
      LOG_DOWNLOAD        TRUE
      LOG_CONFIGURE       TRUE
      LOG_BUILD           TRUE
      LOG_INSTALL         TRUE
      BUILD_PROJECT       TRUE
      UPDATE_DISCONNECTED TRUE # Never update automatically from the remote repository
    )
  endif()
  find_package(rocprim REQUIRED CONFIG PATHS "${rocprim_DIR}")
endif()

# Test dependencies
if(BUILD_TEST)
  # Google Test (https://github.com/google/googletest)
  message(STATUS "Downloading and building GTest.")
  set(GTEST_ROOT ${CMAKE_CURRENT_BINARY_DIR}/gtest CACHE PATH "")
  download_project(
    PROJ                googletest
    GIT_REPOSITORY      https://github.com/google/googletest.git
    GIT_TAG             release-1.8.1
    INSTALL_DIR         ${GTEST_ROOT}
    CMAKE_ARGS          -DBUILD_GTEST=ON -DINSTALL_GTEST=ON -Dgtest_force_shared_crt=ON -DBUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
    LOG_DOWNLOAD        TRUE
    LOG_CONFIGURE       TRUE
    LOG_BUILD           TRUE
    LOG_INSTALL         TRUE
    BUILD_PROJECT       TRUE
    UPDATE_DISCONNECTED TRUE # Never update automatically from the remote repository
  )
  find_package(GTest REQUIRED)
endif()

# Find or download/install rocm-cmake project
find_package(ROCM QUIET CONFIG PATHS /opt/rocm)
if(NOT ROCM_FOUND)
  set(rocm_cmake_tag "master" CACHE STRING "rocm-cmake tag to download")
  file(
    DOWNLOAD https://github.com/RadeonOpenCompute/rocm-cmake/archive/${rocm_cmake_tag}.zip
    ${CMAKE_CURRENT_BINARY_DIR}/rocm-cmake-${rocm_cmake_tag}.zip
    STATUS rocm_cmake_download_status LOG rocm_cmake_download_log
  )
  list(GET rocm_cmake_download_status 0 rocm_cmake_download_error_code)
  if(rocm_cmake_download_error_code)
    message(FATAL_ERROR "Error: downloading "
      "https://github.com/RadeonOpenCompute/rocm-cmake/archive/${rocm_cmake_tag}.zip failed "
      "error_code: ${rocm_cmake_download_error_code} "
      "log: ${rocm_cmake_download_log} "
    )
  endif()

  execute_process(
    COMMAND ${CMAKE_COMMAND} -E tar xzf ${CMAKE_CURRENT_BINARY_DIR}/rocm-cmake-${rocm_cmake_tag}.zip
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
    RESULT_VARIABLE rocm_cmake_unpack_error_code
  )
  if(rocm_cmake_unpack_error_code)
    message(FATAL_ERROR "Error: unpacking  ${CMAKE_CURRENT_BINARY_DIR}/rocm-cmake-${rocm_cmake_tag}.zip failed")
  endif()
  find_package(ROCM REQUIRED CONFIG PATHS ${CMAKE_CURRENT_BINARY_DIR}/rocm-cmake-${rocm_cmake_tag})
endif()

include(ROCMSetupVersion)
include(ROCMCreatePackage)
include(ROCMInstallTargets)
include(ROCMPackageConfigHelpers)
include(ROCMInstallSymlinks)