--- configure.orig	2019-10-22 05:32:59 +0000
+++ configure	2019-10-22 05:33:32 +0000
@@ -26798,7 +26798,7 @@
                         TRY_LINK='$(CC) -oconftest $(INCFLAGS) -I$(hdrdir) $(CPPFLAGS)'
                         TRY_LINK="$TRY_LINK"' $(CFLAGS) $(src) $(LIBPATH) $(LDFLAGS) $(LOCAL_LIBS) $(LIBS)'
 			: ${LIBPATHENV=LIBPATH}
-			: ${PRELOADENV=LDR_PRELOAD}
+			: ${PRELOADENV=LDR_PRELOAD64}
 			rb_cv_dlopen=yes ;; #(
   nto-qnx*) :
     	DLDFLAGS="$DLDFLAGS -L/lib -L/usr/lib -L/usr/local/lib"