cmake_minimum_required(VERSION 3.1)
project(dingusppc)

set(CMAKE_CXX_STANDARD 20)

set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR}/lib)

if (NOT WIN32)
    find_package(SDL2 REQUIRED)
    include_directories(${SDL2_INCLUDE_DIRS})
    if (UNIX AND NOT APPLE)
        find_package (Threads)
    endif()

else() # Windows build relies on vcpkg
    # pick up system wide vcpkg if exists
    if (DEFINED ENV{VCPKG_ROOT} AND EXISTS $ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake)
        message(STATUS "Using system vcpkg at $ENV{VCPKG_ROOT}")
        set(vcpkg_toolchain_file $ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake)

    # check Github Actions vcpkg installation
    elseif (DEFINED ENV{VCPKG_INSTALLATION_ROOT} AND EXISTS $ENV{VCPKG_INSTALLATION_ROOT}/scripts/buildsystems/vcpkg.cmake)
        message(STATUS "Using system vcpkg at $ENV{VCPKG_INSTALLATION_ROOT}")
        set(vcpkg_toolchain_file $ENV{VCPKG_INSTALLATION_ROOT}/scripts/buildsystems/vcpkg.cmake)

    # otherwise, fetch vcpkg from Github
    else()
        message(STATUS "Fetching latest vcpkg from Github...")

        include(FetchContent)
        FetchContent_Declare(vcpkg GIT_REPOSITORY https://github.com/microsoft/vcpkg.git)
        FetchContent_MakeAvailable(vcpkg)
        set(vcpkg_toolchain_file ${vcpkg_SOURCE_DIR}/scripts/buildsystems/vcpkg.cmake)
    endif()

    set(CMAKE_TOOLCHAIN_FILE ${vcpkg_toolchain_file})
    find_package(SDL2 CONFIG REQUIRED)
    add_compile_definitions(SDL_MAIN_HANDLED)
endif()

option(DPPC_BUILD_PPC_TESTS  "Build PowerPC tests" OFF)
option(DPPC_BUILD_BENCHMARKS "Build benchmarking programs" OFF)

option(DPPC_68K_DEBUGGER   "Enable 68k debugging" OFF)

if (DPPC_68K_DEBUGGER)
    # Turn off anything unnecessary.
    set(CAPSTONE_BUILD_SHARED OFF CACHE BOOL "")
    set(CAPSTONE_BUILD_TESTS OFF CACHE BOOL "")
    set(CAPSTONE_BUILD_CSTOOL OFF CACHE BOOL "")
    set(CAPSTONE_BUILD_DIET OFF CACHE BOOL "")
    set(CAPSTONE_OSXKERNEL_SUPPORT OFF CACHE BOOL "")

    # Disable unused Capstone architectures.
    set(CAPSTONE_ARM_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_ARM64_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_MIPS_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_PPC_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_SPARC_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_SYSZ_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_XCORE_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_X86_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_TMS320C64X_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_M680X_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_EVM_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_MOS65XX_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_WASM_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_BPF_SUPPORT OFF CACHE BOOL "")
    set(CAPSTONE_RISCV_SUPPORT OFF CACHE BOOL "")

    ADD_DEFINITIONS(-DENABLE_68K_DEBUGGER)

    add_subdirectory(thirdparty/capstone EXCLUDE_FROM_ALL)
endif()

add_subdirectory("${PROJECT_SOURCE_DIR}/core")
add_subdirectory("${PROJECT_SOURCE_DIR}/cpu/ppc/")
add_subdirectory("${PROJECT_SOURCE_DIR}/debugger/")
add_subdirectory("${PROJECT_SOURCE_DIR}/devices/")
add_subdirectory("${PROJECT_SOURCE_DIR}/machines/")
add_subdirectory("${PROJECT_SOURCE_DIR}/utils/")
add_subdirectory("${PROJECT_SOURCE_DIR}/thirdparty/loguru/")

set(BUILD_TESTS OFF CACHE BOOL "Build Cubeb tests")
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared libraries")
set(BUILD_TOOLS OFF CACHE BOOL "Build Cubeb tools")

add_subdirectory(thirdparty/cubeb EXCLUDE_FROM_ALL)

set(CLI11_ROOT ${PROJECT_SOURCE_DIR}/thirdparty/CLI11)

include_directories("${PROJECT_SOURCE_DIR}"
                    "${PROJECT_SOURCE_DIR}/core"
                    "${PROJECT_SOURCE_DIR}/devices"
                    "${PROJECT_SOURCE_DIR}/cpu/ppc"
                    "${PROJECT_SOURCE_DIR}/debugger"
                    "${PROJECT_SOURCE_DIR}/utils"
					"${PROJECT_SOURCE_DIR}/thirdparty/loguru/"
                    "${PROJECT_SOURCE_DIR}/thirdparty/CLI11/"
                    "${PROJECT_SOURCE_DIR}/thirdparty/cubeb/include")

file(GLOB SOURCES "${PROJECT_SOURCE_DIR}/*.cpp"
                  "${PROJECT_SOURCE_DIR}/*.c"
                  "${PROJECT_SOURCE_DIR}/*.hpp"
                  "${PROJECT_SOURCE_DIR}/*.h")

file(GLOB TEST_SOURCES "${PROJECT_SOURCE_DIR}/cpu/ppc/test/*.cpp")

add_executable(dingusppc ${SOURCES} $<TARGET_OBJECTS:core>
                                    $<TARGET_OBJECTS:cpu_ppc>
                                    $<TARGET_OBJECTS:debugger>
                                    $<TARGET_OBJECTS:devices>
                                    $<TARGET_OBJECTS:machines>
                                    $<TARGET_OBJECTS:utils>
                                    $<TARGET_OBJECTS:loguru>)

if (WIN32)
    target_link_libraries(dingusppc PRIVATE SDL2::SDL2 SDL2::SDL2main cubeb)
else()
    target_link_libraries(dingusppc PRIVATE SDL2::SDL2 SDL2::SDL2main cubeb
                                    ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
endif()

if (DPPC_68K_DEBUGGER)
    target_link_libraries(dingusppc PRIVATE capstone)
endif()

if (DPPC_BUILD_PPC_TESTS)
    add_executable(testppc ${TEST_SOURCES} $<TARGET_OBJECTS:core>
                                           $<TARGET_OBJECTS:cpu_ppc>
                                           $<TARGET_OBJECTS:debugger>
                                           $<TARGET_OBJECTS:devices>
                                           $<TARGET_OBJECTS:machines>
                                           $<TARGET_OBJECTS:utils>
                                           $<TARGET_OBJECTS:loguru>)

    if (WIN32)
        target_link_libraries(testppc PRIVATE SDL2::SDL2 SDL2::SDL2main cubeb)
    else()
        target_link_libraries(testppc PRIVATE SDL2::SDL2 SDL2::SDL2main cubeb
                                    ${CMAKE_DL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
    endif()

    if (DPPC_68K_DEBUGGER)
        target_link_libraries(testppc PRIVATE capstone)
    endif()
endif()

if (DPPC_BUILD_BENCHMARKS)
    file(GLOB BENCH_SOURCES "${PROJECT_SOURCE_DIR}/benchmark/*.cpp")
    add_executable(bench1 ${BENCH_SOURCES} $<TARGET_OBJECTS:core>
                                           $<TARGET_OBJECTS:cpu_ppc>
                                           $<TARGET_OBJECTS:debugger>
                                           $<TARGET_OBJECTS:devices>
                                           $<TARGET_OBJECTS:machines>
                                           $<TARGET_OBJECTS:utils>
                                           $<TARGET_OBJECTS:loguru>)

    target_link_libraries(bench1 PRIVATE cubeb SDL2::SDL2 SDL2::SDL2main ${CMAKE_DL_LIBS}
            ${CMAKE_THREAD_LIBS_INIT})

    if (DPPC_68K_DEBUGGER)
        target_link_libraries(bench1 PRIVATE capstone)
    endif()
endif()

if (DPPC_BUILD_PPC_TESTS)
    add_custom_command(
        TARGET testppc POST_BUILD
        COMMAND ${CMAKE_COMMAND} -E copy
        "${PROJECT_SOURCE_DIR}/cpu/ppc/test/ppcinttests.csv"
        "${PROJECT_SOURCE_DIR}/cpu/ppc/test/ppcfloattests.csv"
        "${PROJECT_SOURCE_DIR}/cpu/ppc/test/ppcdisasmtest.csv"
        $<TARGET_FILE_DIR:${PROJECT_NAME}>)
endif()

install (TARGETS dingusppc DESTINATION ${PROJECT_SOURCE_DIR}/build)