Fix implicit declaration of functions.
--- configure
+++ configure
@@ -8951,8 +8951,9 @@
 #line 8943 "configure"
 #include "confdefs.h"
 
+#include <X11/Intrinsic.h>
 int main() {
-${x_direct_test_function}()
+${x_direct_test_function}(0)
 ; return 0; }
 EOF
 if { (eval echo configure:8950: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then