##============================================================================
##  Copyright (c) Kitware, Inc.
##  All rights reserved.
##  See LICENSE.txt for details.
##
##  This software is distributed WITHOUT ANY WARRANTY; without even
##  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
##  PURPOSE.  See the above copyright notice for more information.
##============================================================================

# When this file is run by CMake through the find_package command, the
# following targets will exist:
#   vtkm::cont       Target that contains most of VTK-m
#
#   vtkm::rendering  Target that contains all the rendering code
#
#   vtkm::filter     Target that contains all of VTK-m pre-built filters
#
#   vtkm::source     Target that contains all of VTK-m pre-built sources
#
#   vtkm::tbb        Target that contains tbb related link information
#                    implicitly linked to by `vtkm_cont` if tbb is enabled
#
#   vtkm::openmp     Target that contains openmp related link information
#                    implicitly linked to by `vtkm_cont` if openmp is enabled
#
#   vtkm::cuda       Target that contains cuda related link information
#                    implicitly linked to by `vtkm_cont` if cuda is enabled
#
# The following local variables will also be defined:
#
#  VTKm_VERSION         Holds the version string of "Major.Minor"
#  VTKm_VERSION_FULL    Holds the version string of "Major.Minor.Patch.GitSha1"
#  VTKm_VERSION_MAJOR   Holds just the major version number
#  VTKm_VERSION_MINOR   Holds just the minor version number
#  VTKm_VERSION_PATCH   Holds just the patch version number
#
#  VTKm_BUILD_SHARED_LIBS     Will be enabled if VTK-m was built shared/dynamic
#  VTKm_ENABLE_CUDA           Will be enabled if VTK-m was built with CUDA support
#  VTKm_ENABLE_TBB            Will be enabled if VTK-m was built with TBB support
#  VTKm_ENABLE_OPENMP         Will be enabled if VTK-m was built with OpenMP support
#  VTKm_ENABLE_KOKKOS         Will be enabled if VTK-m was built with Kokkos support
#  VTKm_ENABLE_LOGGING        Will be enabled if VTK-m was built with logging support
#  VTKm_ENABLE_MPI            Will be enabled if VTK-m was built with MPI support
#  VTKm_ENABLE_RENDERING      Will be enabled if VTK-m was built with rendering support
#  VTKm_ENABLE_GL_CONTEXT     Will be enabled if VTK-m rendering was built with a GL context
#  VTKm_ENABLE_OSMESA_CONTEXT Will be enabled if VTK-m rendering was built with a osmesa context
#  VTKm_ENABLE_EGL_CONTEXT    Will be enabled if VTK-m rendering was built with a EGL context
#

if (CMAKE_VERSION VERSION_LESS "3.12")
  message(FATAL_ERROR "VTK-m requires CMake 3.12+")
endif()
if("${CMAKE_GENERATOR}" MATCHES "Visual Studio" AND
   CMAKE_VERSION VERSION_LESS "3.11")
  message(FATAL_ERROR "VTK-m requires CMake 3.11+ when using the Visual Studio Generators")
endif()

@PACKAGE_INIT@

# The VTKm version number
set(VTKm_VERSION_MAJOR "@VTKm_VERSION_MAJOR@")
set(VTKm_VERSION_MINOR "@VTKm_VERSION_MINOR@")
set(VTKm_VERSION_PATCH "@VTKm_VERSION_PATCH@")
set(VTKm_VERSION_FULL "@VTKm_VERSION_FULL@")
set(VTKm_VERSION "@VTKm_VERSION@")

set(VTKm_BUILD_SHARED_LIBS "@VTKm_BUILD_SHARED_LIBS@")
set(VTKm_ENABLE_CUDA "@VTKm_ENABLE_CUDA@")
set(VTKm_ENABLE_KOKKOS "@VTKm_ENABLE_KOKKOS@")
set(VTKm_ENABLE_OPENMP "@VTKm_ENABLE_OPENMP@")
set(VTKm_ENABLE_TBB "@VTKm_ENABLE_TBB@")
set(VTKm_ENABLE_LOGGING "@VTKm_ENABLE_LOGGING@")
set(VTKm_ENABLE_RENDERING "@VTKm_ENABLE_RENDERING@")
set(VTKm_ENABLE_GL_CONTEXT "@VTKm_ENABLE_GL_CONTEXT@")
set(VTKm_ENABLE_OSMESA_CONTEXT "@VTKm_ENABLE_OSMESA_CONTEXT@")
set(VTKm_ENABLE_EGL_CONTEXT "@VTKm_ENABLE_EGL_CONTEXT@")
set(VTKm_ENABLE_MPI "@VTKm_ENABLE_MPI@")
set(VTKm_ENABLE_TESTING_LIBRARY "@VTKm_ENABLE_TESTING_LIBRARY@")

# This is true when the package is still in the build directory (not installed)
if(CMAKE_CURRENT_LIST_DIR STREQUAL "@VTKm_BUILD_CMAKE_BASE_DIR@/@VTKm_INSTALL_CONFIG_DIR@")
  set(VTKm_PACKAGE_IN_BUILD TRUE)
endif()

if(VTKm_PACKAGE_IN_BUILD)
  set_and_check(VTKm_CMAKE_MODULE_PATH "@VTKm_SOURCE_DIR@/CMake")
else()
  set_and_check(VTKm_CMAKE_MODULE_PATH "@PACKAGE_VTKm_INSTALL_CMAKE_MODULE_DIR@")
endif()

include(CMakeFindDependencyMacro)

set(CMAKE_MODULE_PATH_save_vtkm "${CMAKE_MODULE_PATH}")
list(INSERT CMAKE_MODULE_PATH 0 "${CMAKE_CURRENT_LIST_DIR}")

if (VTKm_ENABLE_TBB)
  find_dependency(TBB)
  if (NOT TBB_FOUND)
    set(VTKm_FOUND 0)
    list(APPEND VTKm_NOT_FOUND_REASON "TBB not found: ${TBB_NOT_FOUND_MESSAGE}")
  endif()
endif()

# Load the library exports, but only if not compiling VTK-m itself
set_and_check(VTKm_CONFIG_DIR "@PACKAGE_VTKm_INSTALL_CONFIG_DIR@")
set(VTKM_FROM_INSTALL_DIR FALSE)
if(NOT "${CMAKE_BINARY_DIR}" STREQUAL "@VTKm_BINARY_DIR@")
  set(VTKM_FROM_INSTALL_DIR TRUE)
  include(${VTKm_CONFIG_DIR}/VTKmTargets.cmake)

  if(DEFINED PACKAGE_FIND_VERSION AND PACKAGE_FIND_VERSION VERSION_LESS 2.0)
    add_library(vtkm_cont ALIAS vtkm::cont)
    add_library(vtkm_filter ALIAS vtkm::filter)
    add_library(vtkm_io ALIAS vtkm::io)
    add_library(vtkm_rendering ALIAS vtkm::rendering)
    add_library(vtkm_source ALIAS vtkm::source)
    add_library(vtkm_worklet ALIAS vtkm::worklet)
  endif()
endif()

# Once we can require CMake 3.15 for all cuda builds we can
# replace this with setting `cuda_architecture_flags` as part of the
# EXPORT_PROPERTIES of the vtkm::cuda target
if(VTKm_ENABLE_CUDA AND VTKM_FROM_INSTALL_DIR)
  # Canonical way of setting CUDA arch
  if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.18)
    set_target_properties(vtkm::cuda PROPERTIES CUDA_ARCHITECTURES "@CMAKE_CUDA_ARCHITECTURES@")
  endif()

  set_target_properties(vtkm::cuda PROPERTIES
    # Legacy way of setting CUDA arch
    cuda_architecture_flags "@VTKm_CUDA_Architecture_Flags@"
    requires_static_builds TRUE)

  # If VTK-m is built with 3.18+ and the consumer is < 3.18 we need to drop
  # these properties as they break the VTK-m cuda flag logic
  if(CMAKE_VERSION VERSION_LESS 3.18)
    set_target_properties(vtkm::cuda PROPERTIES INTERFACE_LINK_OPTIONS "")
  endif()
endif()

# VTKm requires some CMake Find modules not included with CMake, so
# include the CMake modules distributed with VTKm.
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH_save_vtkm} ${VTKm_CMAKE_MODULE_PATH})
unset(CMAKE_MODULE_PATH_save_vtkm)

if(VTKm_ENABLE_CUDA)
  if (CMAKE_VERSION VERSION_LESS 3.13)
    message(FATAL_ERROR "VTK-m with CUDA requires CMake 3.13+")
  endif()
endif()

# This includes a host of functions used by VTK-m CMake.
include(VTKmWrappers)
include(VTKmRenderingContexts)

# Setup diy magic of chosing the appropriate mpi/no_mpi library to link against
include(VTKmDIYUtils)
vtkm_diy_init_target()
