# MIT License
#
# Copyright (c) 2017-2021 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.

cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
cmake_policy(VERSION 3.16...3.21)

# Install prefix
set(CMAKE_INSTALL_PREFIX "/opt/rocm" CACHE PATH "Install path prefix, prepended onto install directories")

#Adding CMAKE_PREFIX_PATH
list( APPEND CMAKE_PREFIX_PATH /opt/rocm/llvm /opt/rocm )

# hipCUB project
project(hipcub LANGUAGES CXX)

# CMake modules
list(APPEND CMAKE_MODULE_PATH
  ${CMAKE_CURRENT_SOURCE_DIR}/cmake
  ${HIP_PATH}/cmake /opt/rocm/hip/cmake # FindHIP.cmake
)

# Set a default build type if none was specified
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "Setting build type to 'Release' as none was specified.")
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build." FORCE)
  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "" "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()

set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE CACHE BOOL "Add paths to linker search and installed rpath")

# rocm-cmake contains common cmake code for rocm projects to help
# setup and install
include(cmake/RocmCmakeDependence.cmake)

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

#Set the AMDGPU_TARGETS with backward compatiblity
set(AMDGPU_TARGETS "all" CACHE STRING "Compile for which gpu architectures?")
if(COMMAND rocm_check_target_ids)
  rocm_check_target_ids(DEFAULT_AMDGPU_TARGETS
    TARGETS "gfx803;gfx900:xnack-;gfx906:xnack-;gfx908:xnack-;gfx90a:xnack-;gfx90a:xnack+;gfx1030"
  )
else()
  # Detect compiler support for target ID
  # This section is deprecated. Please use rocm_check_target_ids for future use.
  if( CMAKE_CXX_COMPILER MATCHES ".*/hipcc$" )
    execute_process(COMMAND ${CMAKE_CXX_COMPILER} "--help"
      OUTPUT_VARIABLE CXX_OUTPUT
      OUTPUT_STRIP_TRAILING_WHITESPACE
      ERROR_STRIP_TRAILING_WHITESPACE)
    string(REGEX MATCH ".mcode\-object\-version" TARGET_ID_SUPPORT ${CXX_OUTPUT})
  endif()
  if(TARGET_ID_SUPPORT)
    set(DEFAULT_AMDGPU_TARGETS "gfx803;gfx900:xnack-;gfx906:xnack-;gfx908:xnack-;gfx1030")
  else()
    set(DEFAULT_AMDGPU_TARGETS "gfx803;gfx900;gfx906;gfx908;gfx1030")
  endif()
endif()
if (AMDGPU_TARGETS)
  if( AMDGPU_TARGETS STREQUAL "all" )
    set( gpus "${DEFAULT_AMDGPU_TARGETS}")
  else()
    set( gpus "${AMDGPU_TARGETS}")
  endif()
  # must FORCE set this AMDGPU_TARGETS before any find_package( hip ...), in this file
  # to override CACHE var and set --offload-arch flags via hip-config.cmake hip::device dependency
  set( AMDGPU_TARGETS "${gpus}" CACHE STRING "AMD GPU targets to compile for" FORCE )
endif()

# Verify that hcc compiler is used on ROCM platform
if (NOT WIN32)
  include(cmake/VerifyCompiler.cmake)
endif()

# Set CXX flags
set(CMAKE_CXX_STANDARD 14)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra")

# Build options
option(BUILD_TEST "Build tests (requires googletest)" OFF)
option(DOWNLOAD_ROCPRIM "Download rocPRIM and do not search for rocPRIM package" OFF)
option(DOWNLOAD_CUB "Download CUB and thrust. Do not search for CUB package" OFF)
option(BUILD_BENCHMARK "Build benchmarks" OFF)
option(BUILD_EXAMPLE "Build Examples" OFF)
option(BUILD_ADDRESS_SANITIZER "Build with address sanitizer enabled" OFF)

if(BUILD_ADDRESS_SANITIZER)
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -shared-libasan")
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -shared-libasan")
  add_link_options(-fuse-ld=lld)
endif()

# Get dependencies
include(cmake/Dependencies.cmake)

# Setup VERSION
set(VERSION_STRING "2.10.12")
rocm_setup_version(VERSION ${VERSION_STRING})

# Print configuration summary
include(cmake/Summary.cmake)
print_configuration_summary()

# hipCUB library
add_subdirectory(hipcub)

# Tests
if(BUILD_TEST)
  enable_testing()
  add_subdirectory(test)
endif()

# Examples
if(BUILD_EXAMPLE)
  add_subdirectory(examples)
endif()

# Benchmarks
if(BUILD_BENCHMARK AND NOT ONLY_INSTALL)
  add_subdirectory(benchmark)
endif()

# Package
if(HIP_COMPILER STREQUAL "hcc" OR HIP_COMPILER STREQUAL "clang")
  set(CPACK_DEBIAN_PACKAGE_DEPENDS "rocprim-dev (>= 2.10.1)")
  set(CPACK_RPM_PACKAGE_REQUIRES "rocprim-devel >= 2.10.1")
  set(CPACK_DEBIAN_PACKAGE_REPLACES "cub-hip")
  set(CPACK_RPM_PACKAGE_OBSOLETES "cub-hip")
else()
  set(CPACK_DEBIAN_PACKAGE_DEPENDS "hip-dev (>= 4.4)")
  set(CPACK_RPM_PACKAGE_REQUIRES "hip-dev >= 4.4")
endif()
set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.txt")
# if(NOT CPACK_PACKAGING_INSTALL_PREFIX)
#   set(CPACK_PACKAGING_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
# endif()

set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION "\${CPACK_PACKAGING_INSTALL_PREFIX}" "\${CPACK_PACKAGING_INSTALL_PREFIX}/include")

if(HIP_COMPILER STREQUAL "hcc" OR HIP_COMPILER STREQUAL "clang")
  rocm_create_package(
    NAME hipcub
    DESCRIPTION "hipCUB (rocPRIM backend)"
    MAINTAINER "hipcub-maintainer@amd.com"
    HEADER_ONLY
  )
else()
  rocm_create_package(
    NAME hipcub_nvcc
    DESCRIPTION "hipCUB (CUB backend)"
    MAINTAINER "hipcub-maintainer@amd.com"
    HEADER_ONLY
  )
endif()