From cc3114baf1683f1c59bfb78fba801a6a39da11d3 Mon Sep 17 00:00:00 2001
From: "Daisuke Fujimura (fd0)" <booleanlabel@gmail.com>
Date: Sun, 18 Feb 2024 09:37:46 +0900
Subject: [PATCH] Build shared library on cygwin

---
 Makefile.am | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Makefile.am b/Makefile.am
index 0f95577..28b0d03 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -79,6 +79,7 @@ wdns/rrtype_to_str.c: wdns/wdns.h wdns/gen_rrtype_to_str
 wdns_libwdns_la_CPPFLAGS = \
 	-include $(top_builddir)/wdns/wdns-private.h
 wdns_libwdns_la_LDFLAGS = $(AM_LDFLAGS) \
+	-no-undefined \
 	-version-info $(LIBWDNS_CURRENT):$(LIBWDNS_REVISION):$(LIBWDNS_AGE)
 if HAVE_LD_VERSION_SCRIPT
 wdns_libwdns_la_LDFLAGS += \