From badf8d95f11cf8ead0f8b7192663002d1d4dc4b2 Mon Sep 17 00:00:00 2001
From: Qi Wang <interwq@gwu.edu>
Date: Mon, 15 Jul 2019 12:09:41 -0700
Subject: [PATCH] Enable opt.retain by default on Windows.

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 39a540fd..261d81c0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -738,6 +738,9 @@ case "${host}" in
 	libprefix=""
 	SOREV="${so}"
 	PIC_CFLAGS=""
+	if test "${LG_SIZEOF_PTR}" = "3"; then
+	  default_retain="1"
+	fi
 	;;
   *)
 	AC_MSG_RESULT([Unsupported operating system: ${host}])