--- a/cmake/FindPhononInternal.cmake
+++ b/cmake/FindPhononInternal.cmake
@@ -64,13 +64,6 @@ include(${phonon_cmake_module_dir}/Macro
 
 include(GNUInstallDirs)
 
-set(SHARE_INSTALL_PREFIX        "${CMAKE_INSTALL_FULL_DATAROOTDIR}")  #              CACHE PATH "Base directory for files which go to share/")
-set(INCLUDE_INSTALL_DIR         "include" ) #           CACHE PATH "The subdirectory to the header prefix")
-if (PHONON_BUILD_PHONON4QT5)
-    set(INCLUDE_INSTALL_DIR         "include/${PHONON_LIB_SONAME}" ) #           CACHE PATH "The subdirectory to the header prefix")
-endif (PHONON_BUILD_PHONON4QT5)
-set(BIN_INSTALL_DIR             "bin"     ) #         CACHE PATH "The install dir for executables (default ${EXEC_INSTALL_PREFIX}/bin)")
-set(LIB_INSTALL_DIR             "${CMAKE_INSTALL_LIBDIR}" ) #  CACHE PATH "The subdirectory relative to the install prefix where libraries will be installed"
 set(PLUGIN_INSTALL_DIR          "${LIB_INSTALL_DIR}/kde4"                   CACHE PATH "The subdirectory relative to the install prefix where plugins will be installed (default is ${LIB_INSTALL_DIR}/kde4)")
 if (PHONON_BUILD_PHONON4QT5)
     set(PLUGIN_INSTALL_DIR          "${LIB_INSTALL_DIR}/qt5"                   CACHE PATH "The subdirectory relative to the install prefix where plugins will be installed (default is ${LIB_INSTALL_DIR}/qt5)" FORCE)
--- a/PhononConfig.cmake.in
+++ b/PhononConfig.cmake.in
@@ -4,7 +4,7 @@
 set(PHONON_VERSION "@PHONON_LIB_MAJOR_VERSION@.@PHONON_LIB_MINOR_VERSION@.@PHONON_LIB_PATCH_VERSION@")
 
 get_filename_component(currentDir ${CMAKE_CURRENT_LIST_FILE} PATH) # get the directory where I myself am
-get_filename_component(rootDir ${currentDir}/@relInstallDir@ ABSOLUTE) # get the chosen install prefix
+get_filename_component(rootDir "" ABSOLUTE) # get the chosen install prefix
 @USR_SYMLINK_RESOLVER@
 
 set(PHONON_NO_GRAPHICSVIEW @PHONON_NO_GRAPHICSVIEW@)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -248,7 +248,7 @@ if("${absInstallDir}" MATCHES "^(/usr)?/
         get_filename_component(_realCurr \"\${CMAKE_CURRENT_LIST_DIR}\" REALPATH)
         get_filename_component(_realOrig \"${absInstallDir}\" REALPATH)
         if(_realCurr STREQUAL _realOrig)
-            set(rootDir \"${CMAKE_INSTALL_PREFIX}\")
+            set(rootDir \"\")
         endif()
         unset(_realOrig)
         unset(_realCurr)")