From 06f4f72e28088fe4cc915c0c2b258f1bbfef2c05 Mon Sep 17 00:00:00 2001
From: Pavel Roskin <plroskin@gmail.com>
Date: Tue, 29 Nov 2016 16:25:37 -0800
Subject: [PATCH] Add -ldl to libcommon link flags if it's needed for dlopen()

---
 common/Makefile.am | 3 ++-
 configure.ac       | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/common/Makefile.am b/common/Makefile.am
index 8305ede4..049e8af9 100644
--- a/common/Makefile.am
+++ b/common/Makefile.am
@@ -52,4 +52,5 @@ libcommon_la_SOURCES = \
 libcommon_la_LIBADD = \
   -lcrypto \
   -lssl \
-  -lpthread
+  -lpthread \
+  $(DLOPEN_LIBS)
diff --git a/configure.ac b/configure.ac
index 94ba2e16..10f73617 100644
--- a/configure.ac
+++ b/configure.ac
@@ -118,6 +118,12 @@ AC_ARG_ENABLE(pixman, AS_HELP_STRING([--enable-pixman],
               [], [enable_pixman=no])
 AM_CONDITIONAL(XRDP_PIXMAN, [test x$enable_pixman = xyes])
 
+# Check if -ldl is needed to use dlopen()
+DLOPEN_LIBS=
+AC_CHECK_FUNC(dlopen, [],
+              [AC_CHECK_LIB(dl, dlopen, [DLOPEN_LIBS=-ldl])])
+AC_SUBST(DLOPEN_LIBS)
+
 # checking for openssl
 AC_CHECK_HEADER([openssl/rc4.h], [],
   [AC_MSG_ERROR([please install libssl-dev or openssl-devel])],