From 4f06ccd17dedbd2e6617e54b01b2acf5e2c8799c Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Thu, 31 Dec 2015 00:13:16 +0900
Subject: [PATCH] Add -ldl to APPLDFLAGS for static openssl linking

---
 configure.ac | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.ac b/configure.ac
index 23921b71..33f461cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -255,6 +255,11 @@ if test "x${have_zlib}" = "xno"; then
   AC_MSG_NOTICE($ZLIB_PKG_ERRORS)
 fi
 
+# dl: openssl requires libdl when it is statically linked.
+LIBS_OLD=$LIBS
+AC_SEARCH_LIBS([dlopen], [dl], [APPLDFLAGS="-ldl $APPLDFLAGS"], [], [])
+LIBS=$LIBS_OLD
+
 # cunit
 PKG_CHECK_MODULES([CUNIT], [cunit >= 2.1], [have_cunit=yes], [have_cunit=no])
 # If pkg-config does not find cunit, check it using AC_CHECK_LIB.  We