diff -ruN motif-2.3.8-orig/configure motif-2.3.8/configure
--- motif-2.3.8-orig/configure	2017-12-05 06:49:56.000000000 -0600
+++ motif-2.3.8/configure	2023-07-16 13:24:40.000000000 -0500
@@ -13172,6 +13172,7 @@
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
+#include <stdlib.h>
 #include <X11/Intrinsic.h>
 int main() {
 Boolean brc;
@@ -14654,8 +14655,9 @@
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
+#include <stdlib.h>
 #include <stdio.h>
-int sprintf(); main() { exit(sprintf(".")); }
+int main() { char buf[1]; int i = sprintf(buf, ""); return 0; }
 _ACEOF
 if ac_fn_c_try_run "$LINENO"; then :
   ac_cv_func_void_sprintf=no
diff -ruN motif-2.3.8-orig/demos/unsupported/xmform/xmform.c motif-2.3.8/demos/unsupported/xmform/xmform.c
--- motif-2.3.8-orig/demos/unsupported/xmform/xmform.c	2016-03-15 21:10:08.000000000 -0500
+++ motif-2.3.8/demos/unsupported/xmform/xmform.c	2023-07-16 13:00:03.000000000 -0500
@@ -50,6 +50,7 @@
 xmform*bottomShadowColor:        black
 ***-------------------------------------------------------------------*/
 
+#include <stdlib.h>
 #include <Xm/Xm.h>
 #include <Xm/Form.h>
 #include <Xm/PushB.h>