Use non-deprecated KDE_INSTALL_CMAKEPACKAGEDIR

CMakeLists.txt

@@ -52,7 +52,7 @@ ecm_setup_version(${PROJECT_VERSION} VARIABLE_PREFIX BREEZE
                   )
 
 # create a Config.cmake and a ConfigVersion.cmake file and install them
-set(CMAKECONFIG_INSTALL_DIR "${CMAKECONFIG_INSTALL_PREFIX}/Breeze")
+set(CMAKECONFIG_INSTALL_DIR "${KDE_INSTALL_CMAKEPACKAGEDIR}/Breeze")
 
 ecm_configure_package_config_file("${CMAKE_CURRENT_SOURCE_DIR}/BreezeConfig.cmake.in"
                                   "${CMAKE_CURRENT_BINARY_DIR}/BreezeConfig.cmake"