Add explicit POSITION_INDEPENDENT_CODE

src/effects/CMakeLists.txt

@@ -32,6 +32,7 @@ endfunction()
 
 macro(KWIN4_ADD_EFFECT_MODULE name)
     kcoreaddons_add_plugin(${name} STATIC SOURCES ${ARGN} INSTALL_NAMESPACE "kwin/effects/plugins")
+    set_property(TARGET ${name} PROPERTY POSITION_INDEPENDENT_CODE ON)
     kwin_strip_builtin_effect_metadata(${name} metadata.json)
     install(FILES metadata.json DESTINATION ${KDE_INSTALL_DATADIR}/${KWIN_NAME}/builtin-effects/${name}/)
 endmacro()

src/plugins/idletime/CMakeLists.txt

@@ -3,6 +3,7 @@ set(idletime_plugin_SRCS
 )
 
 add_library(KF5IdleTimeKWinPlugin OBJECT ${idletime_plugin_SRCS})
+set_property(TARGET KF5IdleTimeKWinPlugin PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_compile_definitions(KF5IdleTimeKWinPlugin PRIVATE QT_STATICPLUGIN)
 target_link_libraries(KF5IdleTimeKWinPlugin
     KF5::IdleTime

src/plugins/kglobalaccel/CMakeLists.txt

@@ -3,5 +3,6 @@ set(kglobalaccel_plugin_SRCS
 )
 
 add_library(KF5GlobalAccelKWinPlugin OBJECT ${kglobalaccel_plugin_SRCS})
+set_property(TARGET KF5GlobalAccelKWinPlugin PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_compile_definitions(KF5GlobalAccelKWinPlugin PRIVATE QT_STATICPLUGIN)
 target_link_libraries(KF5GlobalAccelKWinPlugin KF5::GlobalAccelPrivate kwin)

src/plugins/qpa/CMakeLists.txt

@@ -1,4 +1,5 @@
 add_library(KWinQpaPlugin OBJECT)
+set_property(TARGET KWinQpaPlugin PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_sources(KWinQpaPlugin PRIVATE
     backingstore.cpp
     eglhelpers.cpp

src/plugins/windowsystem/CMakeLists.txt

@@ -6,5 +6,6 @@ set(kwindowsystem_plugin_SRCS
 )
 
 add_library(KF5WindowSystemKWinPlugin OBJECT ${kwindowsystem_plugin_SRCS})
+set_property(TARGET KF5WindowSystemKWinPlugin PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_compile_definitions(KF5WindowSystemKWinPlugin PRIVATE QT_STATICPLUGIN)
 target_link_libraries(KF5WindowSystemKWinPlugin kwin)

src/wayland/CMakeLists.txt

@@ -8,6 +8,7 @@ endif()
 # CMake has a known bug where target_source() doesn't work as expected with files generated
 # in a directory other than the one where the target is defined. It should be fixed in 3.20.
 add_library(WaylandProtocols_xml OBJECT)
+set_property(TARGET WaylandProtocols_xml PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_link_libraries(WaylandProtocols_xml Qt::Core Wayland::Server)
 target_link_libraries(kwin WaylandProtocols_xml)
 

src/xwayland/CMakeLists.txt

@@ -16,4 +16,5 @@ add_library(KWinXwaylandServerModule OBJECT
     xwldrophandler.cpp
     xwaylandlauncher.cpp
 )
+set_property(TARGET KWinXwaylandServerModule PROPERTY POSITION_INDEPENDENT_CODE ON)
 target_link_libraries(KWinXwaylandServerModule PUBLIC kwin KWinXwaylandCommon)

src/xwayland/lib/CMakeLists.txt

@@ -14,5 +14,7 @@ ecm_qt_declare_logging_category(KWinXwaylandCommon
         Warning
 )
 
+set_property(TARGET KWinXwaylandCommon PROPERTY POSITION_INDEPENDENT_CODE ON)
+
 target_include_directories(KWinXwaylandCommon PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_link_libraries(KWinXwaylandCommon Qt::Core Qt::Network)