include(GNUInstallDirs)
include(CMakePackageConfigHelpers)

##
# Custom locations
##

set(Halide_INSTALL_CMAKEDIR "${CMAKE_INSTALL_LIBDIR}/cmake/Halide"
    CACHE STRING "Path to Halide CMake files")

set(Halide_INSTALL_HELPERSDIR "${CMAKE_INSTALL_LIBDIR}/cmake/HalideHelpers"
    CACHE STRING "Path to Halide platform-independent CMake files")

set(Halide_INSTALL_PLUGINDIR "${CMAKE_INSTALL_LIBDIR}"
    CACHE STRING "Path to Halide plugins folder")

set(Halide_INSTALL_TOOLSDIR "${CMAKE_INSTALL_DATADIR}/tools"
    CACHE STRING "Path to Halide build-time tools and sources")

##
# RPATH patching helper
##

function(_Halide_compute_rpath)
    cmake_parse_arguments(PARSE_ARGV 0 ARG "" "ORIGIN_DIR;LIB_DIR" "TARGETS")
    if (APPLE)
        set(rbase @loader_path)
    else ()
        set(rbase $ORIGIN)
    endif ()

    file(RELATIVE_PATH lib_dir
         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_ORIGIN_DIR}
         ${CMAKE_CURRENT_BINARY_DIR}/${ARG_LIB_DIR})

    set_target_properties(${ARG_TARGETS} PROPERTIES INSTALL_RPATH "${rbase};${rbase}/${lib_dir}")
endfunction()

##
# Main library exports
##

install(TARGETS Halide Halide_Generator Halide_GenGen
        EXPORT Halide_Targets
        RUNTIME COMPONENT Halide_Runtime
        LIBRARY COMPONENT Halide_Runtime
        NAMELINK_COMPONENT Halide_Development
        ARCHIVE COMPONENT Halide_Development
        FILE_SET HEADERS COMPONENT Halide_Development)

if (WITH_AUTOSCHEDULERS)
    set(autoschedulers Halide_Adams2019 Halide_Li2018 Halide_Mullapudi2016 Halide_Anderson2021)

    install(TARGETS ${autoschedulers}
            EXPORT Halide_Interfaces
            LIBRARY DESTINATION ${Halide_INSTALL_PLUGINDIR} COMPONENT Halide_Runtime
            NAMELINK_COMPONENT Halide_Development)

    if (NOT CMAKE_INSTALL_RPATH)
        _Halide_compute_rpath(
            TARGETS ${autoschedulers}
            ORIGIN_DIR "${Halide_INSTALL_PLUGINDIR}"
            LIB_DIR "${CMAKE_INSTALL_LIBDIR}"
        )
    endif ()
endif ()

##
# Runtime headers
##

install(TARGETS Halide_Runtime
        EXPORT Halide_Interfaces
        FILE_SET HEADERS COMPONENT Halide_Development)

##
# Halide tools
##

target_sources(Halide_RunGenMain INTERFACE $<INSTALL_INTERFACE:${Halide_INSTALL_TOOLSDIR}/RunGenMain.cpp>)

install(FILES ${Halide_SOURCE_DIR}/tools/RunGenMain.cpp
        DESTINATION ${Halide_INSTALL_TOOLSDIR}
        COMPONENT Halide_Development)

install(TARGETS Halide_Tools Halide_ImageIO Halide_RunGenMain Halide_ThreadPool
        EXPORT Halide_Interfaces
        FILE_SET HEADERS COMPONENT Halide_Development DESTINATION ${Halide_INSTALL_TOOLSDIR})

##
# Install command-line utils
##

set(utils Halide_GenRT)

if (WITH_AUTOSCHEDULERS AND WITH_UTILS)
    list(APPEND utils
        adams2019_retrain_cost_model
        adams2019_weightsdir_to_weightsfile
        anderson2021_retrain_cost_model
        anderson2021_weightsdir_to_weightsfile
        featurization_to_sample
        get_host_target
    )
endif ()

if (NOT CMAKE_INSTALL_RPATH)
    _Halide_compute_rpath(
        TARGETS ${utils}
        ORIGIN_DIR "${CMAKE_INSTALL_BINDIR}"
        LIB_DIR "${CMAKE_INSTALL_LIBDIR}"
    )
endif ()

install(TARGETS ${utils} EXPORT Halide_Interfaces COMPONENT Halide_Development)

##
# READMEs and other top-level documentation
##

install(FILES
        ${Halide_SOURCE_DIR}/README.md
        ${Halide_SOURCE_DIR}/LICENSE.txt
        COMPONENT Halide_Documentation
        TYPE DOC)

install(DIRECTORY "${Halide_SOURCE_DIR}/doc"
        COMPONENT Halide_Documentation
        TYPE DOC
        FILES_MATCHING PATTERN "*.md")

##
# Tools
##

install(PROGRAMS ${Halide_SOURCE_DIR}/src/autoschedulers/adams2019/adams2019_autotune_loop.sh
                 ${Halide_SOURCE_DIR}/src/autoschedulers/anderson2021/anderson2021_autotune_loop.sh
        DESTINATION ${Halide_INSTALL_TOOLSDIR}
        COMPONENT Halide_Development)

##
# Tutorial
##

if (WITH_TUTORIALS)
    install(DIRECTORY ${Halide_SOURCE_DIR}/tutorial
            TYPE DOC
            COMPONENT Halide_Documentation
            FILES_MATCHING
            PATTERN "*.cpp"
            PATTERN "*.h"
            PATTERN "lesson_*.sh"
            PATTERN "*.gif"
            PATTERN "*.jpg"
            PATTERN "*.mp4"
            PATTERN "*.png")
endif ()

##
# CMake scripts
##

if (BUILD_SHARED_LIBS)
    set(type shared)
else ()
    set(type static)
endif ()

install(FILES
        "${Halide_SOURCE_DIR}/cmake/FindHalide_LLVM.cmake"
        "${Halide_SOURCE_DIR}/cmake/FindV8.cmake"
        DESTINATION ${Halide_INSTALL_CMAKEDIR}
        COMPONENT Halide_Development)

install(EXPORT Halide_Targets
        DESTINATION ${Halide_INSTALL_CMAKEDIR}
        NAMESPACE Halide::
        FILE Halide-${type}-targets.cmake
        COMPONENT Halide_Development)

install(EXPORT Halide_Interfaces
        DESTINATION ${Halide_INSTALL_HELPERSDIR}
        NAMESPACE Halide::
        FILE Halide-Interfaces.cmake
        COMPONENT Halide_Development)

write_basic_package_version_file(HalideConfigVersion.cmake
                                 COMPATIBILITY SameMajorVersion)

write_basic_package_version_file(HalideHelpersConfigVersion.cmake
                                 COMPATIBILITY SameMajorVersion
                                 ARCH_INDEPENDENT)

if (WITH_PYTHON_BINDINGS)
    set(extra_paths Halide_Python_INSTALL_CMAKEDIR)
else ()
    set(extra_paths "")
endif ()

configure_package_config_file(
    common/HalideConfig.cmake HalideConfig.cmake
    PATH_VARS Halide_INSTALL_HELPERSDIR ${extra_paths}
    INSTALL_DESTINATION "${Halide_INSTALL_CMAKEDIR}"
    NO_SET_AND_CHECK_MACRO
    NO_CHECK_REQUIRED_COMPONENTS_MACRO
)

configure_package_config_file(
    common/HalideHelpersConfig.cmake HalideHelpersConfig.cmake
    INSTALL_DESTINATION "${Halide_INSTALL_HELPERSDIR}"
    NO_SET_AND_CHECK_MACRO
)

install(FILES
        ${CMAKE_CURRENT_BINARY_DIR}/HalideConfig.cmake
        ${CMAKE_CURRENT_BINARY_DIR}/HalideConfigVersion.cmake
        DESTINATION ${Halide_INSTALL_CMAKEDIR}
        COMPONENT Halide_Development)

install(FILES
        ${CMAKE_CURRENT_BINARY_DIR}/HalideHelpersConfig.cmake
        ${CMAKE_CURRENT_BINARY_DIR}/HalideHelpersConfigVersion.cmake
        ${Halide_SOURCE_DIR}/cmake/HalideGeneratorHelpers.cmake
        ${Halide_SOURCE_DIR}/cmake/FindHalide_WebGPU.cmake
        ${Halide_SOURCE_DIR}/cmake/HalideTargetHelpers.cmake
        ${Halide_SOURCE_DIR}/cmake/TargetExportScript.cmake
        ${Halide_SOURCE_DIR}/cmake/MutexCopy.ps1
        DESTINATION ${Halide_INSTALL_HELPERSDIR}
        COMPONENT Halide_Development)

##
# Compute find_dependency calls for Halide
##

_Halide_install_pkgdeps(
    FILE_NAME Halide-${type}-deps.cmake
    EXPORT_FILE Halide-${type}-targets.cmake
    DESTINATION "${Halide_INSTALL_CMAKEDIR}"
    COMPONENT Halide_Development
)

##
# Documentation
##

if (WITH_DOCS)
    install(DIRECTORY ${Halide_BINARY_DIR}/doc/html
            TYPE DOC
            COMPONENT Halide_Documentation)
endif ()

##
# Pip overrides
##

if (SKBUILD)
    add_subdirectory(pip)
endif ()

##
# General packaging variables.
##

set(CPACK_PACKAGE_NAME Halide)
set(CPACK_PACKAGE_VENDOR Halide)
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Halide compiler and libraries")
set(CPACK_PACKAGE_INSTALL_DIRECTORY ${CPACK_PACKAGE_NAME})
set(CPACK_PACKAGE_VERSION_MAJOR ${Halide_VERSION_MAJOR})
set(CPACK_PACKAGE_VERSION_MINOR ${Halide_VERSION_MINOR})
set(CPACK_PACKAGE_VERSION_PATCH ${Halide_VERSION_PATCH})
set(CPACK_VERBATIM_VARIABLES YES)
set(CPACK_PACKAGE_DESCRIPTION_FILE "${CMAKE_CURRENT_LIST_DIR}/common/Description.txt")
set(CPACK_RESOURCE_FILE_WELCOME "${CMAKE_CURRENT_LIST_DIR}/common/Welcome.txt")
set(CPACK_RESOURCE_FILE_LICENSE "${Halide_SOURCE_DIR}/LICENSE.txt")
set(CPACK_RESOURCE_FILE_README "${Halide_SOURCE_DIR}/README.md")

if (NOT CPACK_PACKAGE_FILE_NAME)
    set(arch_tag "${Halide_CMAKE_TARGET}")
    list(REMOVE_DUPLICATES arch_tag)
    list(SORT arch_tag)
    if (arch_tag MATCHES "arm-64-osx;x86-64-osx")
        set(arch_tag "universal2")
    endif ()
    string(REPLACE ";" "_" arch_tag "${arch_tag}")
    set(CPACK_PACKAGE_FILE_NAME "${CPACK_PACKAGE_NAME}-${Halide_VERSION}-${arch_tag}")
endif ()

include(CPack)

##
# Configure components
##

cpack_add_component(Halide_Runtime
                    DISPLAY_NAME "Halide"
                    DESCRIPTION "Runtime files for libHalide and autoschedulers")

cpack_add_component(Halide_Development
                    DISPLAY_NAME "Halide development"
                    DESCRIPTION "Static Halide libraries and CMake development files"
                    DEPENDS Halide_Runtime)

cpack_add_component(Halide_Python
                    DISPLAY_NAME "Python bindings"
                    DESCRIPTION "Python package providing bindings to Halide"
                    DEPENDS Halide_Runtime)

cpack_add_component(Halide_Documentation
                    DISPLAY_NAME "Halide documentation"
                    DESCRIPTION "Documentation for Halide")