effects: Do not spread the XCB dependency to every effect

src/libkwineffects/CMakeLists.txt

@@ -26,8 +26,8 @@ target_link_libraries(kwineffects
         KF6::ConfigCore
         KF6::CoreAddons
         KF6::WindowSystem
-        XCB::XCB
     PRIVATE
+        XCB::XCB
         Qt::GuiPrivate
         Qt::Quick
         KF6::I18n
@@ -57,7 +57,7 @@ set(kwin_GLUTILSLIB_SRCS
 
 add_library(kwinglutils SHARED ${kwin_GLUTILSLIB_SRCS})
 generate_export_header(kwinglutils BASE_NAME kwinglutils EXPORT_FILE_NAME kwinglutils_export.h)
-target_link_libraries(kwinglutils PUBLIC XCB::XCB KF6::CoreAddons KF6::ConfigCore KF6::WindowSystem epoxy::epoxy)
+target_link_libraries(kwinglutils PUBLIC KF6::CoreAddons KF6::ConfigCore KF6::WindowSystem epoxy::epoxy PRIVATE XCB::XCB)
 target_include_directories(kwinglutils INTERFACE "$<INSTALL_INTERFACE:${KDE_INSTALL_INCLUDEDIR}/kwin>")
 set_target_properties(kwinglutils PROPERTIES
     VERSION ${KWINEFFECTS_VERSION}