diff --git a/common/fltk/configh.cmake.in b/common/fltk/configh.cmake.in
index 092f491..a2dbb58 100644
--- a/common/fltk/configh.cmake.in
+++ b/common/fltk/configh.cmake.in
@@ -117,6 +117,22 @@
 #define USE_XDBE HAVE_XDBE
 
 /*
+ * HAVE_XFIXES:
+ *
+ * Do we have the X fixes extension?
+ */
+
+#cmakedefine01 HAVE_XFIXES
+
+/*
+ * HAVE_XCURSOR:
+ *
+ * Do we have the X cursor library?
+ */
+
+#cmakedefine01 HAVE_XCURSOR
+
+/*
  * __APPLE_QUARTZ__:
  *
  * If __APPLE_QUARTZ__ is defined, FLTK will be