Index: fltk-1.3.6/CMake/setup.cmake
===================================================================
--- fltk-1.3.6.orig/CMake/setup.cmake
+++ fltk-1.3.6/CMake/setup.cmake
@@ -62,7 +62,7 @@ if (WIN32 AND NOT CYGWIN)
 elseif (APPLE AND NOT OPTION_APPLE_X11)
   set (FLTK_CONFIG_PATH FLTK.framework/Resources/CMake)
 else ()
-  set (FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk)
+  set (FLTK_CONFIG_PATH ${FLTK_DATADIR}/fltk CACHE FILEPATH "Install location for cmake files.")
 endif (WIN32 AND NOT CYGWIN)
 
 include(TestBigEndian)