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Add Wayland interfaces query function
With Qt 6.5 and later, we have QNativeInterface::QWaylandApplication for low level Wayland access. For older Qt, QPlatformNativeInterface is required. QPlatformNativeInterface is a private class from Qt::GuiPrivate, which isn't idea. But it was how KDE did it in the past. FindWayland.cmake and FindWaylandProtocols.cmake are modifed version of KDE's ECM, with unused bits removed.
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Trần Nam Tuấn
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# SPDX-FileCopyrightText: 2014 Alex Merry <[email protected]>
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# SPDX-FileCopyrightText: 2014 Martin Gräßlin <[email protected]>
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# SPDX-FileCopyrightText: 2025 Trần Nam Tuấn <[email protected]>
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#[=======================================================================[.rst:
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FindWayland
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-----------
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Try to find Wayland.
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This is a component-based find module, which makes use of the COMPONENTS
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and OPTIONAL_COMPONENTS arguments to find_module. The following components
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are available::
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Client Server Cursor Egl
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If no components are specified, this module will act as though all components
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were passed to OPTIONAL_COMPONENTS.
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This module will define the following variables, independently of the
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components searched for or found:
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``Wayland_FOUND``
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TRUE if (the requested version of) Wayland is available
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``Wayland_VERSION``
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Found Wayland version
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``Wayland_TARGETS``
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A list of all targets imported by this module (note that there may be more
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than the components that were requested)
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``Wayland_LIBRARIES``
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This can be passed to target_link_libraries() instead of the imported
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targets
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``Wayland_INCLUDE_DIRS``
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This should be passed to target_include_directories() if the targets are
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not used for linking
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``Wayland_DEFINITIONS``
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This should be passed to target_compile_options() if the targets are not
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used for linking
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``Wayland_DATADIR``
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The core wayland protocols data directory
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For each searched-for components, ``Wayland_<component>_FOUND`` will be set to
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TRUE if the corresponding Wayland library was found, and FALSE otherwise. If
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``Wayland_<component>_FOUND`` is TRUE, the imported target
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``Wayland::<component>`` will be defined. This module will also attempt to
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determine ``Wayland_*_VERSION`` variables for each imported target, although
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``Wayland_VERSION`` should normally be sufficient.
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In general we recommend using the imported targets, as they are easier to use
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and provide more control. Bear in mind, however, that if any target is in the
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link interface of an exported library, it must be made available by the
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package config file.
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#]=======================================================================]
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include(FindPackageHandleStandardArgs)
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set(Wayland_known_components
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Client
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Server
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Cursor
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Egl
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)
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foreach(_comp ${Wayland_known_components})
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string(TOLOWER "${_comp}" _lc_comp)
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set(Wayland_${_comp}_component_deps)
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set(Wayland_${_comp}_pkg_config "wayland-${_lc_comp}")
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set(Wayland_${_comp}_lib "wayland-${_lc_comp}")
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set(Wayland_${_comp}_header "wayland-${_lc_comp}.h")
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endforeach()
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set(Wayland_Egl_component_deps Client)
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find_package(PkgConfig REQUIRED)
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foreach(_comp ${Wayland_known_components})
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# Handling components dependencies
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foreach(_dep ${Wayland_${_comp}_component_deps})
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list(APPEND _dep_vars "Wayland_${_dep}_FOUND")
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list(APPEND _dep_targets "Wayland::${_dep}")
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endforeach()
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pkg_check_modules(PKG_Wayland_${_comp} QUIET ${Wayland_${_comp}_pkg_config})
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find_path(Wayland_${_comp}_INCLUDE_DIR
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NAMES ${Wayland_${_comp}_header}
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HINTS ${PKG_Wayland_${_comp}_INCLUDE_DIRS}
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)
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find_library(Wayland_${_comp}_LIBRARY
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NAMES ${Wayland_${_comp}_lib}
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HINTS ${PKG_Wayland_${_comp}_LIBRARY_DIRS}
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)
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set(Wayland_${_comp}_VERSION "${PKG_Wayland_${_comp}_VERSION}")
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if(NOT Wayland_VERSION)
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set(Wayland_VERSION ${Wayland_${_comp}_VERSION})
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endif()
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set(FPHSA_NAME_MISMATCHED 1)
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find_package_handle_standard_args(Wayland_${_comp}
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FOUND_VAR
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Wayland_${_comp}_FOUND
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REQUIRED_VARS
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Wayland_${_comp}_LIBRARY
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Wayland_${_comp}_INCLUDE_DIR
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${_dep_vars}
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VERSION_VAR
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Wayland_${_comp}_VERSION
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)
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unset(FPHSA_NAME_MISMATCHED)
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mark_as_advanced(
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Wayland_${_comp}_LIBRARY
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Wayland_${_comp}_INCLUDE_DIR
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)
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if(Wayland_${_comp}_FOUND)
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list(APPEND Wayland_LIBRARIES
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"${Wayland_${_comp}_LIBRARY}")
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list(APPEND Wayland_INCLUDE_DIRS
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"${Wayland_${_comp}_INCLUDE_DIR}")
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set(Wayland_DEFINITIONS
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${Wayland_DEFINITIONS}
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${PKG_Wayland_${_comp}_DEFINITIONS})
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if(NOT TARGET Wayland::${_comp})
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add_library(Wayland::${_comp} UNKNOWN IMPORTED)
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set_target_properties(Wayland::${_comp} PROPERTIES
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IMPORTED_LOCATION "${Wayland_${_comp}_LIBRARY}"
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INTERFACE_COMPILE_OPTIONS "${PKG_Wayland_${_comp}_DEFINITIONS}"
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INTERFACE_INCLUDE_DIRECTORIES "${Wayland_${_comp}_INCLUDE_DIR}"
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INTERFACE_LINK_LIBRARIES "${_dep_targets}"
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)
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endif()
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list(APPEND Wayland_TARGETS
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"Wayland::${_comp}")
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endif()
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endforeach()
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if(Wayland_LIBRARIES)
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list(REMOVE_DUPLICATES Wayland_LIBRARIES)
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endif()
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if(Wayland_INCLUDE_DIRS)
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list(REMOVE_DUPLICATES Wayland_INCLUDE_DIRS)
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endif()
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if(Wayland_DEFINITIONS)
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list(REMOVE_DUPLICATES Wayland_DEFINITIONS)
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endif()
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if(Wayland_TARGETS)
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list(REMOVE_DUPLICATES Wayland_TARGETS)
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endif()
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# If pkg-config didn't provide us with version information,
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# try to extract it from wayland-version.h
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# (Note that the version from wayland-egl.pc will probably be
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# the Mesa version, rather than the Wayland version, but that
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# version will be ignored as we always find wayland-client.pc
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# first).
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if(NOT Wayland_VERSION)
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find_file(Wayland_VERSION_HEADER
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NAMES wayland-version.h
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HINTS ${Wayland_INCLUDE_DIRS}
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)
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mark_as_advanced(Wayland_VERSION_HEADER)
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if(Wayland_VERSION_HEADER)
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file(READ ${Wayland_VERSION_HEADER} _wayland_version_header_contents)
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string(REGEX REPLACE
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"^.*[ \t]+WAYLAND_VERSION[ \t]+\"([0-9.]*)\".*$"
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"\\1"
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Wayland_VERSION
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"${_wayland_version_header_contents}"
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)
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unset(_wayland_version_header_contents)
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endif()
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endif()
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find_package_handle_standard_args(Wayland
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FOUND_VAR
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Wayland_FOUND
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REQUIRED_VARS
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Wayland_LIBRARIES
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VERSION_VAR
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Wayland_VERSION
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HANDLE_COMPONENTS
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)
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pkg_get_variable(Wayland_DATADIR wayland-scanner pkgdatadir)
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if (CMAKE_CROSSCOMPILING AND (NOT EXISTS "${Wayland_DATADIR}/wayland.xml"))
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# PKG_CONFIG_SYSROOT_DIR only applies to -I and -L flags, so pkg-config
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# does not prepend CMAKE_SYSROOT when cross-compiling unless you pass
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# --define-prefix explicitly. Therefore we have to manually do prepend
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# it here when cross-compiling.
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# See https://gitlab.kitware.com/cmake/cmake/-/issues/16647#note_844761
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set(Wayland_DATADIR ${CMAKE_SYSROOT}${Wayland_DATADIR})
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endif()
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if (NOT EXISTS "${Wayland_DATADIR}/wayland.xml")
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message(WARNING "Could not find wayland.xml in ${Wayland_DATADIR}")
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endif()
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include(FeatureSummary)
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set_package_properties(Wayland PROPERTIES
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URL "https://wayland.freedesktop.org/"
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DESCRIPTION "C library implementation of the Wayland protocol: a protocol for a compositor to talk to its clients"
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)
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@@ -0,0 +1,38 @@
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# SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <[email protected]>
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#[=======================================================================[.rst:
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FindWaylandProtocols
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--------------------
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Try to find wayland-protocols on a Unix system.
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This will define the following variables:
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``WaylandProtocols_FOUND``
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True if (the requested version of) wayland-protocols is available
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``WaylandProtocols_VERSION``
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The version of wayland-protocols
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``WaylandProtocols_DATADIR``
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The wayland protocols data directory
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#]=======================================================================]
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find_package(PkgConfig QUIET)
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pkg_check_modules(PKG_wayland_protocols QUIET wayland-protocols)
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set(WaylandProtocols_VERSION ${PKG_wayland_protocols_VERSION})
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pkg_get_variable(WaylandProtocols_DATADIR wayland-protocols pkgdatadir)
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(WaylandProtocols
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FOUND_VAR WaylandProtocols_FOUND
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REQUIRED_VARS WaylandProtocols_DATADIR
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VERSION_VAR WaylandProtocols_VERSION
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)
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include(FeatureSummary)
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set_package_properties(WaylandProtocols PROPERTIES
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DESCRIPTION "Specifications of extended Wayland protocols"
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URL "https://wayland.freedesktop.org/"
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)
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