Cockatrice/CMakeLists.txt

# Cockatrice's main CMakeLists.txt
#
# This is basically a wrapper to enable/disable the compilation
# of the different projects: servatrice, cockatrice, test
# This file sets all the variables shared between the projects
# like the installation path, compilation flags etc..

# 3.16 required for Qt6 and target_precompile_headers()
cmake_minimum_required(VERSION 3.16)

# Use compiler cache (ccache)
option(USE_CCACHE "Cache the build results with ccache" ON)
# Treat warnings as errors (Debug builds only)
option(WARNING_AS_ERROR "Treat warnings as errors in debug builds" ON)
# Check for translation updates
option(UPDATE_TRANSLATIONS "Update translations on compile" OFF)
# Compile Cockatrice
option(WITH_CLIENT "Build Cockatrice client" ON)
# Compile Oracle
option(WITH_ORACLE "Build Cockatrice card database tool (Oracle)" ON)
# Compile Servatrice
option(WITH_SERVER "Build Cockatrice server (Servatrice)" OFF)
# Compile GUI tests (QtTesting widget-level playback)
option(WITH_GUI_TEST "Build the QtTesting-based GUI test harness" OFF)
# Compile tests
option(TEST "Build tests" OFF)
# Build with AddressSanitizer and UndefinedBehaviorSanitizer
option(ENABLE_SANITIZERS "Build with AddressSanitizer and UndefinedBehaviorSanitizer" OFF)
# Build instrumented for GCC line coverage, reported with gcovr
option(ENABLE_COVERAGE "Build instrumented for GCC line coverage" OFF)
# Use vcpkg regardless of OS
option(USE_VCPKG "Use vcpkg regardless of OS" OFF)

# The GUI test harness lives in a submodule; a checkout without it must still configure.
if(WITH_GUI_TEST AND NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/external/qttesting/CMakeLists.txt")
  message(WARNING "WITH_GUI_TEST is ON but external/qttesting is missing, so GUI tests are disabled.\n"
                  "Run 'git submodule update --init external/qttesting' to enable them."
  )
  set(WITH_GUI_TEST OFF)
endif()

# Default to "Release" build type
# User-provided value for CMAKE_BUILD_TYPE must be checked before the PROJECT() call
if(DEFINED CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE
      ${CMAKE_BUILD_TYPE}
      CACHE STRING "Type of build"
  )
else()
  set(CMAKE_BUILD_TYPE
      Release
      CACHE STRING "Type of build"
  )
endif()

# ccache does not support MSVC and must not auto-engage on Windows
# (it is installed unintentionally on the Windows CI runner).
# NOTE: this keys off the target OS, so a mingw/Ninja configuration on Windows
# also opts out of ccache even though the GNUCXX branch below supports it.
if(USE_CCACHE AND NOT WIN32)
  find_program(CCACHE_PROGRAM ccache)
  if(CCACHE_PROGRAM)
    # Support Unix Makefiles and Ninja
    set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE "${CCACHE_PROGRAM}")
    # PCH-aware caching, matching .ci/compile.sh: without this ccache refuses
    # to cache any TU that consumes a precompiled header, so every PCH-backed
    # target recompiles from scratch on each build.
    # The include_file_mtime/include_file_ctime entries that CI also sets are
    # deliberately not set here: --set-config writes the user's global
    # ccache.conf, and those two would turn off the modified-during-compile
    # check for every project on the machine, not just this one.
    execute_process(COMMAND ${CCACHE_PROGRAM} --set-config sloppiness=pch_defines,time_macros)
    message(STATUS "Found CCache ${CCACHE_PROGRAM}")
  endif()
elseif(USE_CCACHE AND WIN32)
  # An explicit opt-in must not disappear silently on Windows.
  message(STATUS "ccache disabled: not supported for the MSVC toolchain on Windows")
endif()

if(WIN32 OR USE_VCPKG)
  # Use vcpkg toolchain on Windows (and on macOS in CI)
  set(CMAKE_TOOLCHAIN_FILE
      ${CMAKE_CURRENT_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake
      CACHE STRING "Vcpkg toolchain file"
  )
  # Qt path set by user or env var
  if(QTDIR
     OR QTDIR32
     OR QTDIR64
     OR DEFINED ENV{QTDIR}
     OR DEFINED ENV{QTDIR32}
     OR DEFINED ENV{QTDIR64}
  )

  else()
    set(QTDIR
        ""
        CACHE PATH "Path to Qt (e.g. C:/Qt/6.4.2/msvc2019_64)"
    )
    message(
      WARNING
        "QTDIR variable is missing.  Please set this variable to specify path to Qt (e.g. C:/Qt/6.4.2/msvc2019_64)"
    )
  endif()
endif()

# A project name is needed for CPack
# Version can be overriden by git tags, see cmake/getversion.cmake
project("Cockatrice" VERSION 3.2.0)

# Set release name if not provided via env/cmake var
if(NOT DEFINED GIT_TAG_RELEASENAME)
  set(GIT_TAG_RELEASENAME "Reality Check")
endif()

# Use c++20 for all targets
set(CMAKE_CXX_STANDARD
    20
    CACHE STRING "C++ ISO Standard"
)
set(CMAKE_CXX_STANDARD_REQUIRED True)

# Set conventional loops
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)

# Search path for cmake modules
set(COCKATRICE_CMAKE_PATH "${PROJECT_SOURCE_DIR}/cmake")
list(INSERT CMAKE_MODULE_PATH 0 "${COCKATRICE_CMAKE_PATH}")

include(getversion)

# Create a header and a cpp file containing the version hash
include(createversionfile)

# Define a proper install path
if(UNIX)
  if(APPLE)
    # macOS
    # Due to the special bundle structure ignore
    # the prefix eventually set by the user.
    set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/release)

    # Force ccache usage if available
    get_property(RULE_LAUNCH_COMPILE GLOBAL PROPERTY RULE_LAUNCH_COMPILE)
    if(RULE_LAUNCH_COMPILE)
      message(STATUS "Force enabling CCache usage under macOS")
      # Set up wrapper scripts
      configure_file("${COCKATRICE_CMAKE_PATH}/launch-c.in" launch-c)
      configure_file("${COCKATRICE_CMAKE_PATH}/launch-cxx.in" launch-cxx)
      execute_process(COMMAND chmod a+rx "${CMAKE_BINARY_DIR}/launch-c" "${CMAKE_BINARY_DIR}/launch-cxx")

      # Set Xcode project attributes to route compilation through our scripts
      set(CMAKE_XCODE_ATTRIBUTE_CC "${CMAKE_BINARY_DIR}/launch-c")
      set(CMAKE_XCODE_ATTRIBUTE_CXX "${CMAKE_BINARY_DIR}/launch-cxx")
      set(CMAKE_XCODE_ATTRIBUTE_LD "${CMAKE_BINARY_DIR}/launch-c")
      set(CMAKE_XCODE_ATTRIBUTE_LDPLUSPLUS "${CMAKE_BINARY_DIR}/launch-cxx")
    endif()
  else()
    # Linux / BSD
    if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
      #fix package build
      if(PREFIX)
        set(CMAKE_INSTALL_PREFIX ${PREFIX})
      else()
        set(CMAKE_INSTALL_PREFIX /usr/local)
      endif()
    endif()
  endif()
elseif(WIN32)
  set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/rundir/${CMAKE_BUILD_TYPE})
endif()

# Define proper compilation flags
if(MSVC)
  # Disable Warning C4251, C++20 compatibility, Multi-threaded Builds, Warn Detection, Unwind Semantics, Debug Symbols
  set(CMAKE_CXX_FLAGS "/wd4251 /Zc:__cplusplus /std:c++20 /permissive- /W4 /MP /EHsc /Zi")
  # Visual Studio: Maximum Optimization, Multi-threaded DLL
  set(CMAKE_CXX_FLAGS_RELEASE "/Ox /MD")
  # Visual Studio: No Optimization, Multi-threaded Debug DLL
  set(CMAKE_CXX_FLAGS_DEBUG "/Od /MDd")

  # Generate PDB, even when in release (So developers can better analyze crash logs)
  set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /DEBUG /OPT:REF /OPT:ICF")

  add_compile_definitions(_SILENCE_STDEXT_ARR_ITERS_DEPRECATION_WARNING)
elseif(CMAKE_COMPILER_IS_GNUCXX)
  # linux/gcc, bsd/gcc, windows/mingw
  include(CheckCXXCompilerFlag)

  set(CMAKE_CXX_FLAGS_RELEASE "-s -O2")
  if(WARNING_AS_ERROR)
    set(CMAKE_CXX_FLAGS_DEBUG "-ggdb -O0 -Wall -Wextra -Werror")
  else()
    set(CMAKE_CXX_FLAGS_DEBUG "-ggdb -O0 -Wall -Wextra")
  endif()

  if(APPLE)
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++20")
  endif()

  set(ADDITIONAL_DEBUG_FLAGS
      -Wcast-align
      -Wmissing-declarations
      -Wno-long-long
      -Wno-error=extra
      -Wno-error=delete-non-virtual-dtor
      -Wno-error=sign-compare
      -Wno-error=missing-declarations
      -Wno-error=sfinae-incomplete # GCC 16+: Qt MOC + protobuf forward decls trigger this
  )

  foreach(FLAG ${ADDITIONAL_DEBUG_FLAGS})
    check_cxx_compiler_flag("${FLAG}" CXX_HAS_WARNING_${FLAG})
    if(CXX_HAS_WARNING_${FLAG})
      set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${FLAG}")
    endif()
  endforeach()

  # Reduce compiler I/O by using pipes between stages instead of temp files
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe")
else()
  # other: osx/llvm, bsd/llvm
  set(CMAKE_CXX_FLAGS_RELEASE "-O2")
  if(WARNING_AS_ERROR)
    set(CMAKE_CXX_FLAGS_DEBUG "-g -O0 -Wall -Wextra -Werror -Wno-unused-parameter")
  else()
    set(CMAKE_CXX_FLAGS_DEBUG "-g -O0 -Wall -Wextra")
  endif()

  # Reduce compiler I/O by using pipes between stages instead of temp files
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe")
endif()

# Always included, because they define cockatrice_disable_sanitizers_for() and
# cockatrice_disable_coverage_for() for the vendored trees. They only touch the global flags
# when ENABLE_SANITIZERS or ENABLE_COVERAGE is on.
include(Sanitizers)
include(Coverage)
include(CrashReporting)

# GNU systems need to define the Mersenne exponent for the RNG to compile w/o warning
if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
  add_definitions("-DSFMT_MEXP=19937")
endif()

find_package(Threads REQUIRED)

# Determine 32 or 64 bit build
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
  set(_lib_suffix 64)
else()
  set(_lib_suffix 32)
endif()

if(NOT "${QTDIR${_lib_suffix}}" STREQUAL "")
  list(APPEND CMAKE_PREFIX_PATH "${QTDIR${_lib_suffix}}")
elseif(NOT "${QTDIR}" STREQUAL "")
  list(APPEND CMAKE_PREFIX_PATH "${QTDIR}")
elseif(NOT "$ENV{QTDIR${_lib_suffix}}" STREQUAL "")
  list(APPEND CMAKE_PREFIX_PATH "$ENV{QTDIR${_lib_suffix}}")
elseif(NOT "$ENV{QTDIR}" STREQUAL "")
  list(APPEND CMAKE_PREFIX_PATH "$ENV{QTDIR}")
endif()

message(STATUS "Update Translations: ${UPDATE_TRANSLATIONS}")

include(FindQtRuntime)

# Reject APIs that were deprecated before the oldest Qt release we support
# (6.4). Qt 6.5 renamed the switch, so use whichever spelling the found
# version understands while still compiling everywhere.
if(Qt6_VERSION VERSION_GREATER_EQUAL 6.5)
  add_compile_definitions(QT_DISABLE_DEPRECATED_UP_TO=0x060400)
else()
  add_compile_definitions(QT_DISABLE_DEPRECATED_BEFORE=0x060400)
endif()

# Set once here for every target: these variables are inherited by the
# subdirectories, so the per-directory copies were redundant. Only the
# variables are set; qt_standard_project_setup would also change the runtime
# output directories and the install RPATH.
set(CMAKE_AUTOMOC TRUE)
set(CMAKE_AUTOUIC TRUE)
set(CMAKE_AUTORCC TRUE)

# Find other needed libraries
find_package(Protobuf CONFIG)
if(NOT Protobuf_FOUND)
  find_package(Protobuf REQUIRED)
endif()

if(${Protobuf_VERSION} VERSION_LESS "3.21.0.0" AND NOT EXISTS "${Protobuf_PROTOC_EXECUTABLE}")
  message(FATAL_ERROR "No protoc command found!")
endif()

#Find OpenSSL
if(WIN32)
  find_package(OpenSSL REQUIRED)
  if(OPENSSL_FOUND)
    include_directories(${OPENSSL_INCLUDE_DIRS})
  endif()
endif()

#Find VCredist
if(MSVC)
  find_package(VCredistRuntime)
endif()

# Package builder
set(CPACK_PACKAGE_CONTACT "Zach Halpern <zach@cockatrice.us>")
set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "${PROJECT_NAME}")
set(CPACK_PACKAGE_VENDOR "Cockatrice Development Team")
set(CPACK_PACKAGE_DESCRIPTION
    "Cockatrice is an open-source, multiplatform application for playing tabletop card games over a network. The program's server design prevents users from manipulating the game for unfair advantage. The client also provides a single-player mode, which allows users to brew while offline."
)
set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
set(CPACK_PACKAGE_VERSION_MINOR "${PROJECT_VERSION_MINOR}")
set(CPACK_PACKAGE_VERSION_PATCH "${PROJECT_VERSION_PATCH}")
set(CPACK_PACKAGE_FILE_NAME "${PROJECT_VERSION_FILENAME}")

if(UNIX)
  if(APPLE)
    set(CPACK_GENERATOR DragNDrop ${CPACK_GENERATOR})
    set(CPACK_GENERATOR "DragNDrop")
    set(CPACK_DMG_FORMAT "UDBZ")
    set(CPACK_DMG_VOLUME_NAME "${PROJECT_NAME}")
    set(CPACK_SYSTEM_NAME "OSX")
    set(CPACK_PACKAGE_ICON "${CMAKE_CURRENT_SOURCE_DIR}/cockatrice/resources/appicon.icns")
    set(CPACK_DMG_DS_STORE_SETUP_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/cmake/CMakeDMGSetup.script")
    set(CPACK_DMG_BACKGROUND_IMAGE "${CMAKE_CURRENT_SOURCE_DIR}/cmake/dmgBackground.tif")
    set(CPACK_PRE_BUILD_SCRIPTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake/SignMacApplications.cmake")
  else()
    # linux
    if(CPACK_GENERATOR STREQUAL "RPM")
      set(CPACK_RPM_PACKAGE_LICENSE "GPLv2")
      set(CPACK_RPM_MAIN_COMPONENT "cockatrice")
      set(CPACK_RPM_PACKAGE_REQUIRES "protobuf, qt6-qtimageformats, qt6-qtmultimedia, qt6-qtsvg, qt6-qttools")
      set(CPACK_RPM_PACKAGE_GROUP "Amusements/Games")
      set(CPACK_RPM_PACKAGE_URL "http://github.com/Cockatrice/Cockatrice")
      # stop directories from making package conflicts
      set(CPACK_RPM_EXCLUDE_FROM_AUTO_FILELIST_ADDITION
          /usr/share/applications
          /usr/share/icons
          /usr/share/icons/hicolor
          /usr/share/icons/hicolor/48x48
          /usr/share/icons/hicolor/48x48/apps
          /usr/share/icons/hicolor/scalable
          /usr/share/icons/hicolor/scalable/apps
      )
    else()
      set(CPACK_GENERATOR DEB)
      set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
      set(CPACK_DEBIAN_PACKAGE_SECTION "games")
      set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "http://github.com/Cockatrice/Cockatrice")
      set(CPACK_DEBIAN_PACKAGE_DEPENDS "libqt6multimedia6, libqt6svg6, qt6-image-formats-plugins, qt6-qpa-plugins")
      set(CPACK_DEBIAN_PACKAGE_RECOMMENDS "libqt6sql6-mysql") # for connecting servatrice to a mysql db
    endif()
  endif()
elseif(WIN32)
  set(CPACK_GENERATOR NSIS ${CPACK_GENERATOR})
  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
    set(TRICE_IS_64_BIT 1)
  else()
    set(TRICE_IS_64_BIT 0)
  endif()

  # Configure file with custom definitions for NSIS.
  configure_file("${COCKATRICE_CMAKE_PATH}/NSIS.definitions.nsh.in" "${PROJECT_BINARY_DIR}/NSIS.definitions.nsh")

  # Installer-log sender for the AbortInstall Sentry hook (values parsed out of COCKATRICE_SENTRY_DSN in
  # cmake/CrashReporting.cmake). Generated only when a DSN was parsed: cmake/NSIS.template.in embeds it under
  # the same CPACK_SENTRY_ENABLED check, so a build without reporting never references or carries the helper.
  if(CPACK_SENTRY_ENABLED)
    configure_file(
      "${COCKATRICE_CMAKE_PATH}/SendInstallerLog.ps1.in" "${PROJECT_BINARY_DIR}/SendInstallerLog.ps1" @ONLY
    )
  endif()

  # Every runtime DLL a Windows install has to contain, as paths relative to the
  # install root. .ci/compile.sh reads this and fails the build when the packaged
  # installer is missing one of them, or carries a runtime it does not know about.
  #
  # All three applications are packaged into the same directory on Windows, so
  # this is the union of their Qt module lists, not just the client's: Servatrice
  # contributes Qt6Sql.dll and Oracle contributes nothing the client lacks, and a
  # client-only manifest leaves Qt6Sql.dll unasserted even though servatrice.exe
  # is installed next to cockatrice.exe and cannot start without it.
  #
  # A statically linked Qt module ships no runtime DLL, so requiring one would
  # fail the package check on a static build for no reason. cockatrice/CMakeLists.txt
  # installs the runtime of every module listed here, and skips static ones the
  # same way, so the two can never disagree.
  #
  # Only the Qt modules, and that is deliberate. protobuf, Abseil, liblzma, zlib
  # and OpenSSL also ride in on the "*.dll" glob, and a client whose runtime is
  # absent, stale or of the wrong architecture fails to start with "abseil_dll.dll
  # is either not designed to run on Windows or it contains an error", so they
  # are exactly the files worth asserting.
  #
  # Their names cannot be derived from the vcpkg bin directory, which is what a
  # first attempt did and what a Windows build immediately refuted: bin holds
  # everything vcpkg installed, not everything the applications import. It also
  # contains gmock.dll, libprotobuf-lite.dll, libprotoc.dll, legacy.dll and three
  # pthreadVC*.dll FindThreads probes, none of which any shipped executable
  # links, so requiring them failed a build over a package that was correct.
  #
  # Deriving them from the executables' own import tables is the real answer,
  # and fixup_bundle already walks it to decide what to copy. Until that result
  # is available to CMake, requiring the vcpkg half would mean guessing names
  # again, which is what produced this bug report in the first place. So assert
  # what is derived from the build's own link lists and leave the rest to the
  # purge in cmake/NSIS.template.in, which removes every DLL regardless of name.
  set(_required_runtime "")
  foreach(_qt_module IN LISTS COCKATRICE_QT_MODULES SERVATRICE_QT_MODULES ORACLE_QT_MODULES)
    get_target_property(_qt_module_type ${_qt_module} TYPE)
    if(_qt_module_type STREQUAL "SHARED_LIBRARY")
      string(REGEX REPLACE "^Qt6::" "" _qt_component "${_qt_module}")
      list(APPEND _required_runtime "Qt6${_qt_component}.dll")
    endif()
  endforeach()
  list(APPEND _required_runtime "Plugins/platforms/qwindows.dll")

  list(REMOVE_DUPLICATES _required_runtime)
  list(SORT _required_runtime)
  string(REPLACE ";" "\n" _required_runtime "${_required_runtime}")
  file(WRITE "${PROJECT_BINARY_DIR}/required-runtime.txt" "${_required_runtime}\n")

  # include vcredist into the package; NSIS will take care of running it
  if(VCREDISTRUNTIME_FOUND)
    install(FILES "${VCREDISTRUNTIME_FILE}" DESTINATION ./)
  endif()
endif()

include(CPack)

add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_interfaces ${CMAKE_BINARY_DIR}/libcockatrice_interfaces)
add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_protocol ${CMAKE_BINARY_DIR}/libcockatrice_protocol)
if(WITH_CLIENT
   OR WITH_SERVER
   OR WITH_ORACLE
)
  add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_network ${CMAKE_BINARY_DIR}/libcockatrice_network)
endif()
add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_deck_list ${CMAKE_BINARY_DIR}/libcockatrice_deck_list)
add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_rng ${CMAKE_BINARY_DIR}/libcockatrice_rng)
add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_card ${CMAKE_BINARY_DIR}/libcockatrice_card)
add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_utility ${CMAKE_BINARY_DIR}/libcockatrice_utility)
if(WITH_ORACLE OR WITH_CLIENT)
  add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_settings ${CMAKE_BINARY_DIR}/libcockatrice_settings)
  add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_models ${CMAKE_BINARY_DIR}/libcockatrice_models)
  add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_filters ${CMAKE_BINARY_DIR}/libcockatrice_filters)
endif()
if(WITH_CLIENT)
  add_subdirectory(${CMAKE_SOURCE_DIR}/libcockatrice_game ${CMAKE_BINARY_DIR}/libcockatrice_game)
endif()

if(WITH_SERVER)
  add_subdirectory(servatrice)
  set(CPACK_INSTALL_CMAKE_PROJECTS "Servatrice;Servatrice;ALL;/" ${CPACK_INSTALL_CMAKE_PROJECTS})
endif()

if(WITH_CLIENT)
  add_subdirectory(cockatrice)
  set(CPACK_INSTALL_CMAKE_PROJECTS "Cockatrice;Cockatrice;ALL;/" ${CPACK_INSTALL_CMAKE_PROJECTS})
endif()

if(WIN32 AND WITH_CLIENT)
  # Runs from the installer's $PLUGINSDIR when a purge fails, and is never installed
  # (see LogProcessesUsingInstallDir in cmake/NSIS.template.in), so it has no install
  # rules and is not part of the client's staged tree.
  add_subdirectory(${CMAKE_SOURCE_DIR}/tools/installer-holder-probe ${CMAKE_BINARY_DIR}/tools/installer-holder-probe)
endif()

if(WITH_ORACLE)
  add_subdirectory(oracle)
  set(CPACK_INSTALL_CMAKE_PROJECTS "Oracle;Oracle;ALL;/" ${CPACK_INSTALL_CMAKE_PROJECTS})
endif()

if(WITH_GUI_TEST)
  set(QtTesting_QT_VERSION "6")
  # QtTesting registers its own unit tests when BUILD_TESTING is on. They target the
  # Qt version the harness was written for and fail on Qt 6.11 (toolbutton
  # long-press recording), and they are not Cockatrice's tests, so suppress them
  # for the duration of the subdirectory instead of painting ctest red.
  if(DEFINED BUILD_TESTING)
    set(_cockatrice_saved_build_testing ${BUILD_TESTING})
  endif()
  set(BUILD_TESTING
      OFF
      CACHE BOOL "Build the testing tree." FORCE
  )
  add_subdirectory(external/qttesting)
  if(DEFINED _cockatrice_saved_build_testing)
    set(BUILD_TESTING
        ${_cockatrice_saved_build_testing}
        CACHE BOOL "Build the testing tree." FORCE
    )
  else()
    unset(BUILD_TESTING CACHE)
  endif()
  # cl.exe has no warnings-as-errors here, and it rejects -Wno-error with D8021.
  if(NOT MSVC)
    target_compile_options(qttesting PRIVATE -Wno-error)
  endif()
endif()

if(TEST)
  include(CTest)
  add_subdirectory(tests)
endif()

if(Qt6_FOUND AND Qt6_VERSION_MINOR GREATER_EQUAL 3)
  # Qt6.3+ requires project finalization to support translations
  qt_finalize_project()
endif()