diff --git a/CMakeLists.txt b/CMakeLists.txt
index 67c4bac..3e2e265 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -290,6 +290,11 @@
   set(USE_INCLUDED_FLTK 1)
 endif()
 if(USE_INCLUDED_FLTK)
+  set(HAVE_FLTK_DEAD_KEYS 1)
+  set(HAVE_FLTK_CLIPBOARD 1)
+  set(HAVE_FLTK_MEDIAKEYS 1)
+  set(HAVE_FLTK_FULLSCREEN 1)
+  set(HAVE_FLTK_CURSOR 1)
   set(FLTK_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/common/fltk)
   set(FLTK_LIBRARIES)
   if(APPLE)