kwin/CMakeLists.txt

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CMake
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cmake_minimum_required(VERSION 3.16)
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set(PROJECT_VERSION "6.1.80") # Handled by release scripts
project(KWin VERSION ${PROJECT_VERSION})
set(CMAKE_C_STANDARD 99)
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set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(PROJECT_DEP_VERSION "6.1.1")
set(QT_MIN_VERSION "6.7.0")
set(KF6_MIN_VERSION "6.2.0")
set(KDE_COMPILERSETTINGS_LEVEL "5.82")
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find_package(ECM ${KF6_MIN_VERSION} REQUIRED NO_MODULE)
# where to look first for cmake modules, before ${CMAKE_ROOT}/Modules/ is checked
set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${ECM_MODULE_PATH})
include(CMakeDependentOption)
include(CMakePackageConfigHelpers)
include(FeatureSummary)
include(WriteBasicConfigVersionFile)
include(GenerateExportHeader)
include(CheckCXXCompilerFlag)
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckSymbolExists)
include(KDEInstallDirs)
include(KDECMakeSettings)
include(KDECompilerSettings NO_POLICY_SCOPE)
include(KDEClangFormat)
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include(KDEGitCommitHooks)
include(ECMFindQmlModule)
include(ECMInstallIcons)
include(ECMOptionalAddSubdirectory)
include(ECMConfiguredInstall)
include(ECMQtDeclareLoggingCategory)
include(ECMSetupQtPluginMacroNames)
include(ECMSetupVersion)
include(ECMQmlModule)
include(ECMGenerateQmlTypes)
option(KWIN_BUILD_DECORATIONS "Enable building of KWin decorations." ON)
option(KWIN_BUILD_KCMS "Enable building of KWin configuration modules." ON)
option(KWIN_BUILD_NOTIFICATIONS "Enable building of KWin with knotifications support" ON)
option(KWIN_BUILD_SCREENLOCKER "Enable building of KWin lockscreen functionality" ON)
option(KWIN_BUILD_TABBOX "Enable building of KWin Tabbox functionality" ON)
option(KWIN_BUILD_X11 "Enable building X11 common code and Xwayland support" ON)
option(KWIN_BUILD_X11_BACKEND "Enable building kwin_x11" ON)
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option(KWIN_BUILD_GLOBALSHORTCUTS "Enable building of KWin with global shortcuts support" ON)
option(KWIN_BUILD_RUNNERS "Enable building of KWin with krunner support" ON)
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find_package(Qt6 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
Concurrent
Core
Core5Compat
DBus
Quick
UiTools
WaylandClient
Widgets
Sensors
Svg
)
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find_package(Qt6Test ${QT_MIN_VERSION} CONFIG QUIET)
set_package_properties(Qt6Test PROPERTIES
PURPOSE "Required for tests"
TYPE OPTIONAL
)
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add_feature_info("Qt6Test" Qt6Test_FOUND "Required for building tests")
if (NOT Qt6Test_FOUND)
set(BUILD_TESTING OFF CACHE BOOL "Build the testing tree.")
endif()
if (BUILD_TESTING)
find_package(KPipeWire)
endif()
# required frameworks by Core
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find_package(KF6 ${KF6_MIN_VERSION} REQUIRED COMPONENTS
Auth
ColorScheme
Config
ConfigWidgets
CoreAddons
Crash
DBusAddons
GlobalAccel
GuiAddons
I18n
IdleTime
Package
Service
Svg
WidgetsAddons
WindowSystem
)
# required frameworks by config modules
if(KWIN_BUILD_KCMS)
find_package(KF6 ${KF6_MIN_VERSION} REQUIRED COMPONENTS
Declarative
KCMUtils
NewStuff
Service
XmlGui
)
endif()
if(KWIN_BUILD_TABBOX AND KWIN_BUILD_KCMS)
find_package(KF6 ${KF6_MIN_VERSION} REQUIRED COMPONENTS
WidgetsAddons
)
endif()
find_package(Threads)
set_package_properties(Threads PROPERTIES
PURPOSE "Needed for VirtualTerminal support in KWin Wayland"
TYPE REQUIRED
)
find_package(KWayland ${PROJECT_DEP_VERSION} CONFIG)
set_package_properties(KWayland PROPERTIES
PURPOSE "Required to build wayland platform plugin and tests"
TYPE REQUIRED
)
# optional frameworks
find_package(PlasmaActivities ${PROJECT_DEP_VERSION} CONFIG)
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set_package_properties(PlasmaActivities PROPERTIES
PURPOSE "Enable building of KWin with kactivities support"
TYPE OPTIONAL
)
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add_feature_info("PlasmaActivities" PlasmaActivities_FOUND "Enable building of KWin with kactivities support")
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find_package(KF6DocTools ${KF6_MIN_VERSION} CONFIG)
set_package_properties(KF6DocTools PROPERTIES
PURPOSE "Enable building documentation"
TYPE OPTIONAL
)
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add_feature_info("KF6DocTools" KF6DocTools_FOUND "Enable building documentation")
find_package(KF6Kirigami ${KF6_MIN_VERSION} CONFIG)
set_package_properties(KF6Kirigami PROPERTIES
DESCRIPTION "A QtQuick based components set"
PURPOSE "Required at runtime for several QML effects"
TYPE RUNTIME
)
find_package(Plasma ${PROJECT_DEP_VERSION} CONFIG)
set_package_properties(Plasma PROPERTIES
DESCRIPTION "A QtQuick based components set"
PURPOSE "Required at runtime for several QML effects"
TYPE RUNTIME
)
find_package(KDecoration2 ${PROJECT_DEP_VERSION} CONFIG)
set_package_properties(KDecoration2 PROPERTIES
TYPE REQUIRED
PURPOSE "Required for server side decoration support"
)
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find_package(Breeze 5.9.0 CONFIG)
set_package_properties(Breeze PROPERTIES
TYPE OPTIONAL
PURPOSE "For setting the default window decoration plugin"
)
if (${Breeze_FOUND})
if (${BREEZE_WITH_KDECORATION})
set(HAVE_BREEZE_DECO true)
else()
set(HAVE_BREEZE_DECO FALSE)
endif()
else()
set(HAVE_BREEZE_DECO FALSE)
endif()
add_feature_info("Breeze-Decoration" HAVE_BREEZE_DECO "Default decoration plugin Breeze")
find_package(EGL)
set_package_properties(EGL PROPERTIES
TYPE REQUIRED
PURPOSE "Required to build KWin with EGL support"
)
find_package(epoxy 1.3)
set_package_properties(epoxy PROPERTIES
DESCRIPTION "libepoxy"
URL "https://github.com/anholt/libepoxy"
TYPE REQUIRED
PURPOSE "OpenGL dispatch library"
)
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set(HAVE_DL_LIBRARY FALSE)
if (epoxy_HAS_GLX)
find_library(DL_LIBRARY dl)
if (DL_LIBRARY)
set(HAVE_DL_LIBRARY TRUE)
endif()
endif()
find_package(Wayland 1.22)
set_package_properties(Wayland PROPERTIES
TYPE REQUIRED
PURPOSE "Required for building KWin with Wayland support"
)
if (Wayland_VERSION VERSION_GREATER_EQUAL 1.23)
set(HAVE_WL_DISPLAY_SET_DEFAULT_MAX_BUFFER_SIZE 1)
else()
set(HAVE_WL_DISPLAY_SET_DEFAULT_MAX_BUFFER_SIZE 0)
endif()
find_package(WaylandProtocols 1.36)
set_package_properties(WaylandProtocols PROPERTIES
TYPE REQUIRED
PURPOSE "Collection of Wayland protocols that add functionality not available in the Wayland core protocol"
URL "https://gitlab.freedesktop.org/wayland/wayland-protocols/"
)
find_package(PlasmaWaylandProtocols 1.14.0 CONFIG)
set_package_properties(PlasmaWaylandProtocols PROPERTIES
TYPE REQUIRED
PURPOSE "Collection of Plasma-specific Wayland protocols"
URL "https://invent.kde.org/libraries/plasma-wayland-protocols/"
)
find_package(XKB 0.7.0)
set_package_properties(XKB PROPERTIES
TYPE REQUIRED
PURPOSE "Required for building KWin with Wayland support"
)
if (XKB_VERSION VERSION_GREATER_EQUAL 1.5.0)
set(HAVE_XKBCOMMON_NO_SECURE_GETENV 1)
else()
set(HAVE_XKBCOMMON_NO_SECURE_GETENV 0)
endif()
find_package(Canberra REQUIRED)
if (KWIN_BUILD_X11)
pkg_check_modules(XKBX11 IMPORTED_TARGET xkbcommon-x11 REQUIRED)
add_feature_info(XKBX11 XKBX11_FOUND "Required for handling keyboard events in X11 backend")
# All the required XCB components
find_package(XCB 1.10 REQUIRED COMPONENTS
COMPOSITE
CURSOR
DAMAGE
DRI3
GLX
ICCCM
IMAGE
KEYSYMS
PRESENT
RANDR
RENDER
SHAPE
SHM
SYNC
XCB
XFIXES
XKB
XINERAMA
XINPUT
)
set_package_properties(XCB PROPERTIES TYPE REQUIRED)
find_package(X11_XCB)
set_package_properties(X11_XCB PROPERTIES
PURPOSE "Required for building X11 windowed backend of kwin_wayland"
TYPE OPTIONAL
)
find_package(Xwayland)
set_package_properties(Xwayland PROPERTIES
URL "https://x.org"
DESCRIPTION "Xwayland X server"
TYPE RUNTIME
PURPOSE "Needed for running kwin_wayland"
)
set(HAVE_XWAYLAND_LISTENFD ${Xwayland_HAVE_LISTENFD})
set(HAVE_XWAYLAND_ENABLE_EI_PORTAL ${Xwayland_HAVE_ENABLE_EI_PORTAL})
set(HAVE_GLX ${epoxy_HAS_GLX})
get_target_property(QT_DISABLED_FEATURES Qt6::Gui QT_DISABLED_PUBLIC_FEATURES)
if("xcb_glx_plugin" IN_LIST QT_DISABLED_FEATURES)
message(STATUS "Disable GLX because Qt6::Gui was built without xcb_glx_plugin")
set(HAVE_GLX false)
endif()
# for kwin internal things
set(HAVE_X11_XCB ${X11_XCB_FOUND})
find_package(X11)
set_package_properties(X11 PROPERTIES
DESCRIPTION "X11 libraries"
URL "https://www.x.org"
TYPE REQUIRED
)
else()
set(KWIN_BUILD_X11_BACKEND OFF CACHE BOOL "Enable building kwin_x11" FORCE)
endif()
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find_package(Libinput 1.19)
set_package_properties(Libinput PROPERTIES TYPE REQUIRED PURPOSE "Required for input handling on Wayland.")
find_package(Libeis-1.0)
set_package_properties(Libeis PROPERTIES TYPE OPTIONAL PURPOSE "Required for emulated input handling.")
find_package(UDev)
set_package_properties(UDev PROPERTIES
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URL "https://www.freedesktop.org/wiki/Software/systemd/"
DESCRIPTION "Linux device library."
TYPE REQUIRED
PURPOSE "Required for input handling on Wayland."
)
find_package(Libdrm 2.4.116)
set_package_properties(Libdrm PROPERTIES TYPE REQUIRED PURPOSE "Required for drm output on Wayland.")
find_package(gbm)
set_package_properties(gbm PROPERTIES TYPE REQUIRED PURPOSE "Required for egl output of drm backend.")
if (gbm_VERSION VERSION_GREATER_EQUAL 21.1)
set(HAVE_GBM_BO_GET_FD_FOR_PLANE 1)
else()
set(HAVE_GBM_BO_GET_FD_FOR_PLANE 0)
endif()
if (gbm_VERSION VERSION_GREATER_EQUAL 21.3)
set(HAVE_GBM_BO_CREATE_WITH_MODIFIERS2 1)
else()
set(HAVE_GBM_BO_CREATE_WITH_MODIFIERS2 0)
endif()
pkg_check_modules(Libxcvt IMPORTED_TARGET libxcvt>=0.1.1 REQUIRED)
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add_feature_info(Libxcvt Libxcvt_FOUND "Required for generating modes in the drm backend")
add_feature_info("XInput" X11_Xi_FOUND "Required for poll-free mouse cursor updates")
set(HAVE_X11_XINPUT ${X11_Xinput_FOUND})
find_package(lcms2)
set_package_properties(lcms2 PROPERTIES
DESCRIPTION "Small-footprint color management engine"
URL "http://www.littlecms.com"
TYPE REQUIRED
PURPOSE "Required for the color management system"
)
find_package(Freetype)
set_package_properties(Freetype PROPERTIES
DESCRIPTION "A font rendering engine"
URL "https://www.freetype.org"
TYPE REQUIRED
PURPOSE "Needed for KWin's QPA plugin."
)
find_package(Fontconfig)
set_package_properties(Fontconfig PROPERTIES
TYPE REQUIRED
PURPOSE "Needed for KWin's QPA plugin."
)
Use real-time scheduling policy for kwin_wayland Summary: The base idea behind this change is to keep the system responsive no matter what other processes do. All input and rendering needs to go through the windowing system, so keeping it responsive is important. Currently KWin competes with all other processes for resources and this can render the system unusable. Consider some processes running amok. In this case the user might not be able to easily close the applications as KWin does not get the cpu time to perform the input tasks requested by the user. Or in the case of playing a demanding game it is important that KWin gets scheduled to forward the pointer input events. The user doesn't want that the game (or another process) wins against the windowing sytem. The disadvantage is that KWin always wins against other processes with real time scheduling. This could result in KWin running amok stalling the system. On the other hand this is no change to the current situation as if KWin runs amok the sytem is unusable. The change uses libcap to set CAP_SYS_NICE on kwin_wayland executable. KWin_wayland on start sets the scheduling policy to SCHED_RR with the lowest possible priority. Thus any other SCHED_RR process will win against KWin. So real time processes are not affected by this change! After adjusting the scheduling (which requires CAP_SYS_NICE) KWin drops this capability again. Test Plan: Verified that KWin adjusts the scheduler, that it is not passed to child processes, that the capability gets dropped and not passed to child processes. Reviewers: #kwin, #plasma Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D7757
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find_package(Libcap)
set_package_properties(Libcap PROPERTIES
TYPE OPTIONAL
PURPOSE "Needed for running kwin_wayland with real-time scheduling policy"
)
set(HAVE_LIBCAP ${Libcap_FOUND})
find_package(hwdata)
set_package_properties(hwdata PROPERTIES
TYPE RUNTIME
PURPOSE "Runtime-only dependency needed for mapping monitor hardware vendor IDs to full names"
URL "https://github.com/vcrhonek/hwdata"
)
find_package(QAccessibilityClient6 CONFIG)
set_package_properties(QAccessibilityClient6 PROPERTIES
URL "https://commits.kde.org/libqaccessibilityclient"
DESCRIPTION "KDE client-side accessibility library"
TYPE OPTIONAL
PURPOSE "Required to enable accessibility features"
)
set(HAVE_ACCESSIBILITY ${QAccessibilityClient6_FOUND})
pkg_check_modules(libsystemd IMPORTED_TARGET libsystemd)
add_feature_info(libsystemd libsystemd_FOUND "Required for setting up the service watchdog")
if(KWIN_BUILD_GLOBALSHORTCUTS)
find_package(KGlobalAccelD REQUIRED)
endif()
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pkg_check_modules(libdisplayinfo IMPORTED_TARGET display-info)
if (NOT libdisplayinfo_FOUND)
pkg_check_modules(libdisplayinfo REQUIRED IMPORTED_TARGET libdisplay-info)
endif()
add_feature_info(libdisplayinfo libdisplayinfo_FOUND "EDID and DisplayID library: https://gitlab.freedesktop.org/emersion/libdisplay-info")
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pkg_check_modules(PipeWire IMPORTED_TARGET libpipewire-0.3>=0.3.29)
add_feature_info(PipeWire PipeWire_FOUND "Required for Wayland screencasting")
if (KWIN_BUILD_NOTIFICATIONS)
find_package(KF6 ${KF6_MIN_VERSION} REQUIRED COMPONENTS Notifications)
endif()
if (KWIN_BUILD_SCREENLOCKER)
find_package(KScreenLocker CONFIG)
set_package_properties(KScreenLocker PROPERTIES
TYPE REQUIRED
PURPOSE "For screenlocker integration in kwin_wayland"
)
endif()
ecm_find_qmlmodule(QtQuick 2.3)
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ecm_find_qmlmodule(QtQuick.Controls 2.15)
ecm_find_qmlmodule(QtQuick.Layouts 1.3)
ecm_find_qmlmodule(QtQuick.Window 2.1)
ecm_find_qmlmodule(QtMultimedia 5.0)
ecm_find_qmlmodule(org.kde.kquickcontrolsaddons 2.0)
ecm_find_qmlmodule(org.kde.plasma.core 2.0)
ecm_find_qmlmodule(org.kde.plasma.components 2.0)
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cmake_dependent_option(KWIN_BUILD_ACTIVITIES "Enable building of KWin with kactivities support" ON "PlasmaActivities_FOUND" OFF)
cmake_dependent_option(KWIN_BUILD_EIS "Enable building KWin with libeis support" ON "Libeis-1.0_FOUND" OFF)
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/src/wayland
${CMAKE_CURRENT_BINARY_DIR}/src
${CMAKE_CURRENT_SOURCE_DIR}/src
)
check_symbol_exists(SCHED_RESET_ON_FORK "sched.h" HAVE_SCHED_RESET_ON_FORK)
add_feature_info("SCHED_RESET_ON_FORK"
HAVE_SCHED_RESET_ON_FORK
"Required for running kwin_wayland with real-time scheduling")
check_cxx_source_compiles("
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
int main() {
const int size = 10;
int fd = memfd_create(\"test\", MFD_CLOEXEC | MFD_ALLOW_SEALING);
ftruncate(fd, size);
fcntl(fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_WRITE | F_SEAL_SEAL);
mmap(nullptr, size, PROT_WRITE, MAP_SHARED, fd, 0);
}" HAVE_MEMFD)
check_cxx_compiler_flag(-Wno-unused-parameter COMPILER_UNUSED_PARAMETER_SUPPORTED)
if (COMPILER_UNUSED_PARAMETER_SUPPORTED)
add_compile_options(-Wno-unused-parameter)
endif()
add_definitions(
-DQT_DISABLE_DEPRECATED_BEFORE=0
-DQT_NO_KEYWORDS
-DQT_USE_QSTRINGBUILDER
-DQT_NO_URL_CAST_FROM_STRING
-DQT_NO_CAST_TO_ASCII
-DQT_NO_FOREACH
# Prevent EGL headers from including platform headers, in particular Xlib.h.
-DMESA_EGL_NO_X11_HEADERS
-DEGL_NO_X11
-DEGL_NO_PLATFORM_SPECIFIC_TYPES
)
ecm_setup_qtplugin_macro_names(
JSON_ARG2
"KWIN_EFFECT_FACTORY"
JSON_ARG3
"KWIN_EFFECT_FACTORY_ENABLED"
"KWIN_EFFECT_FACTORY_SUPPORTED"
JSON_ARG4
"KWIN_EFFECT_FACTORY_SUPPORTED_ENABLED"
CONFIG_CODE_VARIABLE
PACKAGE_SETUP_KWINEFFECTS_AUTOMOC_VARIABLES
)
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if (KF6DocTools_FOUND)
add_subdirectory(doc)
kdoctools_install(po)
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endif()
add_subdirectory(data)
add_subdirectory(kconf_update)
add_subdirectory(src)
if (BUILD_TESTING)
add_subdirectory(autotests)
add_subdirectory(tests)
endif()
# add clang-format target for all our real source files
file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h)
kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
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kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)
feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/KWinDBusInterface")
configure_package_config_file(KWinDBusInterfaceConfig.cmake.in
"${CMAKE_CURRENT_BINARY_DIR}/KWinDBusInterfaceConfig.cmake"
PATH_VARS KDE_INSTALL_DBUSINTERFACEDIR
INSTALL_DESTINATION ${CMAKECONFIG_INSTALL_DIR})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/KWinDBusInterfaceConfig.cmake
DESTINATION ${CMAKECONFIG_INSTALL_DIR})
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ecm_install_configured_files(INPUT plasma-kwin_wayland.service.in @ONLY
DESTINATION ${KDE_INSTALL_SYSTEMDUSERUNITDIR})
if (KWIN_BUILD_X11_BACKEND)
ecm_install_configured_files(INPUT plasma-kwin_x11.service.in @ONLY
DESTINATION ${KDE_INSTALL_SYSTEMDUSERUNITDIR})
endif()
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ki18n_install(po)