diff --git a/configure.in b/configure.in
index d144244195..c9ebe70d7d 100644
--- a/configure.in
+++ b/configure.in
@@ -3139,6 +3139,24 @@ libraries returned by 'pkg-config gtk+-2.0 --libs' or 'gtk-config
                         AC_DEFINE(__WXMOTIF20__,0)
                         AC_MSG_RESULT([not found])
                        ])
+
+        AC_MSG_CHECKING([whether Motif is Lesstif])
+        AC_TRY_COMPILE([
+                        #include <Xm/Xm.h>
+                       ],
+                       [
+                        #if !defined(LesstifVersion) || LesstifVersion <= 0
+                        #error "Not Lesstif"
+                        #endif
+                       ],
+                       [
+                        AC_DEFINE(__WXLESSTIF__,1)
+                        AC_MSG_RESULT([yes])
+                       ],
+                       [
+                        AC_DEFINE(__WXLESSTIF__,0)
+                        AC_MSG_RESULT([no])
+                       ])
         CFLAGS=$save_CFLAGS
 
         GUI_TK_LIBRARY="$GUI_TK_LIBRARY -lXm${libp_link} -lXmu -lXext -lXt${libsm_ice_link} -lX11"
diff --git a/setup.h.in b/setup.h.in
index 42403a4814..3a4ad72b98 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -75,6 +75,9 @@
 /* Define this if your version of Motif is greater than 2.0 */
 #undef __WXMOTIF20__
 
+/* Define this if you are using Lesstif */
+#undef __WXLESSTIF__
+
 /*
  * Define to 1 for Unix[-like] system
  */
diff --git a/setup.h_vms b/setup.h_vms
index 7e1c5a7e8b..5dcec85ca2 100644
--- a/setup.h_vms
+++ b/setup.h_vms
@@ -72,6 +72,9 @@
 /* Define this if your version of Motif is greater than 2.0 */
 /* #undef __WXMOTIF20__ */
 
+/* Define this if you are using Lesstif */
+/* #undef __WXLESSTIF__ */
+
 #ifdef __WXGTK__
 /* Define this if your version of GTK+ is greater than 1.2 */
 #define __WXGTK12__ 1