kwin/CMakeLists.txt

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cmake_minimum_required(VERSION 3.16)
set(PROJECT_VERSION "5.26.80") # 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(QT_MIN_VERSION "5.15.2")
set(KF5_MIN_VERSION "5.98.0")
set(KDE_COMPILERSETTINGS_LEVEL "5.82")
find_package(ECM ${KF5_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 ${ECM_MODULE_PATH})
include(CMakeDependentOption)
include(CMakePackageConfigHelpers)
include(FeatureSummary)
include(WriteBasicConfigVersionFile)
include(GenerateExportHeader)
include(CheckCXXCompilerFlag)
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckSymbolExists)
include(KDEInstallDirs)
include(KDECMakeSettings)
include(KDECompilerSettings NO_POLICY_SCOPE)
include(KDEClangFormat)
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include(KDEGitCommitHooks)
include(ECMFindQmlModule)
include(ECMInstallIcons)
include(ECMOptionalAddSubdirectory)
include(ECMConfiguredInstall)
include(ECMQtDeclareLoggingCategory)
find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
Concurrent
Core
DBus
Quick
UiTools
Widgets
)
if (QT_MAJOR_VERSION EQUAL "5")
find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS X11Extras)
find_package(Qt5XkbCommonSupport REQUIRED)
else()
find_package(Qt6 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS WaylandClient ShaderTools)
if (Qt6WaylandClient_VERSION VERSION_LESS "6.4.1") # TODO Plasma 6: Drop once minimum Qt version is 6.4.1+
include(Qt6WaylandClientMacrosKde)
endif()
endif()
find_package(Qt${QT_MAJOR_VERSION}Test ${QT_MIN_VERSION} CONFIG QUIET)
set_package_properties(Qt${QT_MAJOR_VERSION}Test PROPERTIES
PURPOSE "Required for tests"
TYPE OPTIONAL
)
add_feature_info("Qt${QT_MAJOR_VERSION}Test" Qt${QT_MAJOR_VERSION}Test_FOUND "Required for building tests")
if (NOT Qt${QT_MAJOR_VERSION}Test_FOUND)
set(BUILD_TESTING OFF CACHE BOOL "Build the testing tree.")
endif()
# required frameworks by Core
find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
Auth
Config
ConfigWidgets
CoreAddons
Crash
DBusAddons
GlobalAccel
I18n
IdleTime
Package
Plasma
WidgetsAddons
WindowSystem
)
# required frameworks by config modules
find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
Declarative
KCMUtils
NewStuff
Service
XmlGui
ItemViews
)
find_package(Threads)
set_package_properties(Threads PROPERTIES
PURPOSE "Needed for VirtualTerminal support in KWin Wayland"
TYPE REQUIRED
)
find_package(KF5Wayland ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Wayland PROPERTIES
PURPOSE "Required to build wayland platform plugin and tests"
TYPE REQUIRED
)
# optional frameworks
find_package(KF5Activities ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Activities PROPERTIES
PURPOSE "Enable building of KWin with kactivities support"
TYPE OPTIONAL
)
add_feature_info("KF5Activities" KF5Activities_FOUND "Enable building of KWin with kactivities support")
find_package(KF5DocTools ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5DocTools PROPERTIES
PURPOSE "Enable building documentation"
TYPE OPTIONAL
)
add_feature_info("KF5DocTools" KF5DocTools_FOUND "Enable building documentation")
find_package(KF5Runner ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Runner PROPERTIES
PURPOSE "Enable building of KWin with krunner support"
TYPE OPTIONAL
)
add_feature_info("KF5Runner" KF5Runner_FOUND "Enable building of KWin with krunner support")
find_package(KF5Kirigami2 ${KF5_MIN_VERSION} CONFIG)
set_package_properties(KF5Kirigami2 PROPERTIES
DESCRIPTION "A QtQuick based components set"
PURPOSE "Required at runtime for Virtual desktop KCM"
TYPE RUNTIME
)
find_package(KDecoration2 ${PROJECT_VERSION} CONFIG)
set_package_properties(KDecoration2 PROPERTIES
TYPE REQUIRED
PURPOSE "Required for server side decoration support"
)
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find_package(Breeze 5.9.0 CONFIG)
set_package_properties(Breeze PROPERTIES
TYPE OPTIONAL
PURPOSE "For setting the default window decoration plugin"
)
if (${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()
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)
find_package(Wayland 1.21)
set_package_properties(Wayland PROPERTIES
TYPE REQUIRED
PURPOSE "Required for building KWin with Wayland support"
)
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find_package(WaylandProtocols 1.30)
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 1.9.0 CONFIG)
set_package_properties(PlasmaWaylandProtocols PROPERTIES
TYPE REQUIRED
PURPOSE "Collection of Plasma-specific Wayland protocols"
URL "https://invent.kde.org/libraries/plasma-wayland-protocols/"
)
if (QT_MAJOR_VERSION EQUAL "5")
find_package(QtWaylandScanner)
set_package_properties(QtWaylandScanner PROPERTIES
TYPE REQUIRED
PURPOSE "Required for building KWin with Wayland support"
)
endif()
find_package(XKB 0.7.0)
set_package_properties(XKB PROPERTIES
TYPE REQUIRED
PURPOSE "Required for building KWin with Wayland support"
)
pkg_check_modules(XKBX11 IMPORTED_TARGET xkbcommon-x11 REQUIRED)
add_feature_info(XKBX11 XKBX11_FOUND "Required for handling keyboard events in X11 backend")
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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(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 2.4.112)
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} GREATER_EQUAL 21.1)
set(HAVE_GBM_BO_GET_FD_FOR_PLANE 1)
else()
set(HAVE_GBM_BO_GET_FD_FOR_PLANE 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")
find_package(X11)
set_package_properties(X11 PROPERTIES
DESCRIPTION "X11 libraries"
URL "https://www.x.org"
TYPE REQUIRED
)
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"
)
# All the required XCB components
find_package(XCB 1.10 REQUIRED COMPONENTS
COMPOSITE
CURSOR
DAMAGE
GLX
ICCCM
IMAGE
KEYSYMS
RANDR
RENDER
SHAPE
SHM
SYNC
XCB
XFIXES
XKB
XINERAMA
)
set_package_properties(XCB PROPERTIES TYPE REQUIRED)
# and the optional XCB dependencies
if (XCB_ICCCM_VERSION VERSION_LESS "0.4")
set(XCB_ICCCM_FOUND FALSE)
endif()
add_feature_info("XCB-ICCCM" XCB_ICCCM_FOUND "Required for building test applications for KWin")
find_package(X11_XCB)
set_package_properties(X11_XCB PROPERTIES
PURPOSE "Required for building X11 windowed backend of kwin_wayland"
TYPE OPTIONAL
)
# dependencies for QPA plugin
if (QT_MAJOR_VERSION EQUAL "5")
find_package(Qt5FontDatabaseSupport REQUIRED)
find_package(Qt5ThemeSupport REQUIRED)
find_package(Qt5ServiceSupport REQUIRED)
find_package(Qt5EventDispatcherSupport REQUIRED)
endif()
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."
)
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})
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(QAccessibilityClient CONFIG)
set_package_properties(QAccessibilityClient PROPERTIES
URL "https://www.kde.org"
DESCRIPTION "KDE client-side accessibility library"
TYPE OPTIONAL
PURPOSE "Required to enable accessibility features"
)
set(HAVE_ACCESSIBILITY ${QAccessibilityClient_FOUND})
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)
########### configure tests ###############
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)
cmake_dependent_option(KWIN_BUILD_ACTIVITIES "Enable building of KWin with kactivities support" ON "KF5Activities_FOUND" OFF)
cmake_dependent_option(KWIN_BUILD_RUNNERS "Enable building of KWin with krunner support" ON "KF5Runner_FOUND" OFF)
set(HAVE_EPOXY_GLX ${epoxy_HAS_GLX})
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# for kwin internal things
set(HAVE_X11_XCB ${X11_XCB_FOUND})
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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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")
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(KF5 ${KF5_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()
########### global ###############
include_directories(BEFORE
${CMAKE_CURRENT_BINARY_DIR}/src/libkwineffects
${CMAKE_CURRENT_BINARY_DIR}/src/wayland
${CMAKE_CURRENT_BINARY_DIR}/src
${CMAKE_CURRENT_SOURCE_DIR}/src/libkwineffects
${CMAKE_CURRENT_SOURCE_DIR}/src/effects
${CMAKE_CURRENT_SOURCE_DIR}/src/tabbox
${CMAKE_CURRENT_SOURCE_DIR}/src/platformsupport
${CMAKE_CURRENT_SOURCE_DIR}/src/colors
)
check_cxx_compiler_flag(-Wno-unused-parameter COMPILER_UNUSED_PARAMETER_SUPPORTED)
if (COMPILER_UNUSED_PARAMETER_SUPPORTED)
add_compile_options(-Wno-unused-parameter)
endif()
add_definitions(
-DQT_DISABLE_DEPRECATED_BEFORE=0
-DQT_NO_KEYWORDS
-DQT_USE_QSTRINGBUILDER
-DQT_NO_URL_CAST_FROM_STRING
-DQT_NO_CAST_TO_ASCII
-DQT_NO_FOREACH
# Prevent EGL headers from including platform headers, in particular Xlib.h.
-DMESA_EGL_NO_X11_HEADERS
-DEGL_NO_X11
-DEGL_NO_PLATFORM_SPECIFIC_TYPES
)
if (KF5DocTools_FOUND)
add_subdirectory(doc)
kdoctools_install(po)
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endif()
add_subdirectory(data)
add_subdirectory(kconf_update)
add_subdirectory(src)
if (BUILD_TESTING)
find_package(Wayland REQUIRED COMPONENTS Client)
add_subdirectory(autotests)
add_subdirectory(tests)
endif()
# add clang-format target for all our real source files
file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h)
kde_clang_format(${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_x11.service.in plasma-kwin_wayland.service.in @ONLY
DESTINATION ${KDE_INSTALL_SYSTEMDUSERUNITDIR})
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ki18n_install(po)