From f9e11bb22299fbb8fef19a61fc38f2a645a1d5a7 Mon Sep 17 00:00:00 2001
From: Christian Beier <dontmind@freeshell.org>
Date: Fri, 4 May 2012 17:08:48 +0200
Subject: Enable building DLLs with MinGW32.

---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index 3e83d3a..2eaa46a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,6 +15,7 @@ else
 fi
 test "x$GCC" = "xyes" && CFLAGS="$CFLAGS -Wall"
 AC_PROG_MAKE_SET
+AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL
 AC_PATH_PROG([AR], [ar], [/usr/bin/ar],
                   [$PATH:/usr/ccs/bin])
@@ -798,6 +799,7 @@ MINGW=`echo $host_os | grep mingw32  2>/dev/null`
 AM_CONDITIONAL(MINGW, test ! -z "$MINGW" )
 if test ! -z "$MINGW"; then
 	WSOCKLIB="-lws2_32"
+	LDFLAGS="$LDFLAGS -no-undefined"
 fi
 AC_SUBST(WSOCKLIB)
 
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