--- ./kscreensaver/xsavers/CMakeLists.txt.orig	2010-03-05 12:35:01.000000000 -0600
+++ ./kscreensaver/xsavers/CMakeLists.txt	2018-01-30 13:59:36.413760135 -0600
@@ -1,3 +1,4 @@
+include(CheckIncludeFiles)
 check_include_files(memory.h HAVE_MEMORY_H)
 configure_file (config-xsavers.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-xsavers.h )