From 7d61535076aa1ca484f453594b29e2ca052c2505 Mon Sep 17 00:00:00 2001
From: Martin Szulecki
Date: Sat, 16 Feb 2013 18:30:45 +0100
Subject: Fix building with mingw and make sure linking generates proper DLL
 files

---
 configure.ac | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 0d0a308..7c0b8a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -106,6 +106,20 @@ AC_CHECK_HEADERS([linux/if.h],[],[],
 AC_CHECK_HEADERS([net/if_types.h])
 AC_CHECK_HEADERS([net/if_dl.h])
 
+dnl Check for cygwin and mingw builds to allow building DLLs
+WIN32_EXTRA_LIBADD=
+WIN32_EXTRA_LDFLAGS=
+case "$host" in
+  *-*-cygwin*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+  *-*-mingw*)
+  WIN32_EXTRA_LDFLAGS="-no-undefined -avoid-version"
+  ;;
+esac
+AC_SUBST(WIN32_EXTRA_LIBADD)
+AC_SUBST(WIN32_EXTRA_LDFLAGS)
+
 dnl This is a check to see if we are running MacOS X
 dnl It may be better to do a Darwin check
 AC_CHECK_HEADERS([sys/appleapiopts.h]) 
-- 
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