GIT_SILENT: don't use deprecated cmake variable

doc/CMakeLists.txt

 ########### install files ###############
-kdoctools_create_handbook(index.docbook INSTALL_DESTINATION ${HTML_INSTALL_DIR}/en SUBDIR krfb)
+kdoctools_create_handbook(index.docbook INSTALL_DESTINATION ${KDE_INSTALL_DOCBUNDLEDIR}/en SUBDIR krfb)

events/x11/CMakeLists.txt

@@ -15,4 +15,4 @@ target_link_libraries (krfb_events_x11
                        krfbprivate
 )
 
-install (TARGETS krfb_events_x11 DESTINATION ${PLUGIN_INSTALL_DIR}/krfb)
+install (TARGETS krfb_events_x11 DESTINATION ${KDE_INSTALL_PLUGINDIR}/krfb)

events/xdp/CMakeLists.txt

@@ -23,5 +23,5 @@ target_link_libraries (krfb_events_xdp
 )
 
 install (TARGETS krfb_events_xdp
-         DESTINATION ${PLUGIN_INSTALL_DIR}/krfb
+         DESTINATION ${KDE_INSTALL_PLUGINDIR}/krfb
 )

framebuffers/pipewire/CMakeLists.txt

@@ -49,5 +49,5 @@ target_link_libraries (krfb_framebuffer_pw
 )
 
 install (TARGETS krfb_framebuffer_pw
-         DESTINATION ${PLUGIN_INSTALL_DIR}/krfb
+         DESTINATION ${KDE_INSTALL_PLUGINDIR}/krfb
 )

framebuffers/qt/CMakeLists.txt

@@ -28,5 +28,5 @@ target_link_libraries (krfb_framebuffer_qt
 )
 
 install (TARGETS krfb_framebuffer_qt
-         DESTINATION ${PLUGIN_INSTALL_DIR}/krfb
+         DESTINATION ${KDE_INSTALL_PLUGINDIR}/krfb
 )

framebuffers/xcb/CMakeLists.txt

@@ -32,5 +32,5 @@ target_link_libraries (krfb_framebuffer_xcb
 )
 
 install (TARGETS krfb_framebuffer_xcb
-         DESTINATION ${PLUGIN_INSTALL_DIR}/krfb
+         DESTINATION ${KDE_INSTALL_PLUGINDIR}/krfb
 )

krfb/CMakeLists.txt

@@ -36,14 +36,14 @@ set_target_properties (krfbprivate PROPERTIES
 )
 
 install (TARGETS krfbprivate
-         ${INSTALL_TARGETS_DEFAULT_ARGS}
+         ${KDE_INSTALL_TARGETS_DEFAULT_ARGS}
          LIBRARY NAMELINK_SKIP
 )
 
 install (FILES
          krfb-framebuffer.desktop
          krfb-events.desktop
-         DESTINATION ${SERVICETYPES_INSTALL_DIR}
+         DESTINATION ${KDE_INSTALL_KSERVICETYPES5DIR}
 )
 
 #####################################
@@ -120,13 +120,13 @@ if (X11_XTest_FOUND)
 endif (X11_XTest_FOUND)
 
 install (TARGETS krfb
-         ${INSTALL_TARGETS_DEFAULT_ARGS}
+         ${KDE_INSTALL_TARGETS_DEFAULT_ARGS}
 )
 
 ########### install files ###############
 
 install (PROGRAMS org.kde.krfb.desktop
-         DESTINATION ${XDG_APPS_INSTALL_DIR}
+         DESTINATION ${KDE_INSTALL_APPDIR}
 )
 
 install(FILES org.kde.krfb.appdata.xml
@@ -134,6 +134,6 @@ install(FILES org.kde.krfb.appdata.xml
 )
 
 install (FILES krfb.notifyrc
-         DESTINATION ${DATA_INSTALL_DIR}/krfb
+         DESTINATION ${KDE_INSTALL_DATADIR}/krfb
 )