# ---------------------------------------------------------------
# Programmer(s): Slaven Peles and Cody J. Balos @ LLNL
# ---------------------------------------------------------------
# SUNDIALS Copyright Start
# Copyright (c) 2002-2025, Lawrence Livermore National Security
# and Southern Methodist University.
# All rights reserved.
#
# See the top-level LICENSE and NOTICE files for details.
#
# SPDX-License-Identifier: BSD-3-Clause
# SUNDIALS Copyright End
# ---------------------------------------------------------------
# CMakeLists.txt file for IDA raja examples
# ---------------------------------------------------------------

# Example lists are tuples "name\;type" where the type is 'develop' for examples
# excluded from 'make test' in releases

# Examples using SUNDIALS linear solvers
set(IDA_examples "idaHeat2D_kry_p_mpiraja.cpp\;1\;4\;develop")

if(SUNDIALS_RAJA_BACKENDS MATCHES "CUDA")
  set(_lang CUDA)
else()
  set(_lang CXX)
endif()

if((RAJA_BACKENDS MATCHES "TARGET_OPENMP") OR (RAJA_BACKENDS MATCHES "OPENMP"))
  set(OTHER_LIBS OpenMP::OpenMP_CXX)
endif()

# Add the build and install targets for each IDA example
foreach(example_tuple ${IDA_examples})

  # parse the example tuple
  list(GET example_tuple 0 example)
  list(GET example_tuple 1 number_of_nodes)
  list(GET example_tuple 2 number_of_tasks)
  list(GET example_tuple 3 example_type)

  # extract the file name without extension
  get_filename_component(example_target ${example} NAME_WE)

  # add example source files
  set_source_files_properties(${example} PROPERTIES LANGUAGE ${_lang})

  sundials_add_executable(${example_target} ${example})

  set_target_properties(${example_traget} PROPERTIES FOLDER "Examples")

  target_include_directories(${example_target} PUBLIC ${MPI_CXX_INCLUDE_DIRS})

  # libraries to link against
  target_link_libraries(
    ${example_target}
    PRIVATE sundials_ida sundials_nvecmpiplusx sundials_nvecraja
            ${MPI_CXX_LIBRARIES} ${EXE_EXTRA_LINK_LIBS} ${OTHER_LIBS})

  # add example to regression tests
  sundials_add_test(
    ${example_target} ${example_target}
    MPI_NPROCS ${number_of_tasks}
    ANSWER_DIR ${CMAKE_CURRENT_SOURCE_DIR}
    ANSWER_FILE ${example_target}.out
    EXAMPLE_TYPE ${example_type})

endforeach(example_tuple ${IDA_examples})

# create Makefile and CMakeLists.txt for examples
if(EXAMPLES_INSTALL)

  if((RAJA_BACKENDS MATCHES "TARGET_OPENMP") OR (RAJA_BACKENDS MATCHES "OPENMP"
                                                ))
    set(EXAMPLES_FIND_PACKAGE "find_package(OpenMP REQUIRED)\n")
    set(_openmp_target OpenMP::OpenMP_CXX)
  endif()

  if(RAJA_NEEDS_THREADS)
    set(EXAMPLES_FIND_PACKAGE
        "${EXAMPLES_FIND_PACKAGE}find_package(Threads REQUIRED)\n")
  endif()

  sundials_install_examples(
    ida IDA_examples
    CMAKE_TEMPLATE cmakelists_${_lang}_MPI_ex.in
    MAKE_TEMPLATE makefile_parallel_RAJA_ex.in
    SOLVER_LIBRARY sundials_ida
    SUNDIALS_TARGETS ida nvecmpiplusx nvecraja
    OTHER_TARGETS ${_openmp_target}
    DESTINATION ida/mpiraja
    EXTRA_FILES README
    TEST_INSTALL mpiraja)

endif()