diff --git a/CMakeLists.txt b/CMakeLists.txt
index e8876c3..30dab04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,5 @@
+cmake_minimum_required(VERSION 2.6)
+
 project(LibVNCServer)
 include(CheckFunctionExists)
 include(CheckIncludeFile)
@@ -14,6 +16,7 @@ include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/
 find_package(ZLIB)
 find_package(JPEG)
 find_package(SDL)
+find_package(GnuTLS)
 
 if(SDL_FOUND)   # == pthread.h available
   option(TIGHTVNC_FILETRANSFER "Enable filetransfer" ON)
@@ -25,6 +28,9 @@ if(JPEG_FOUND)
   set(LIBVNCSERVER_HAVE_LIBJPEG 1)
 endif(JPEG_FOUND)
 option(LIBVNCSERVER_ALLOW24BPP "Allow 24 bpp" ON)
+if(GNUTLS_FOUND)
+  set(LIBVNCSERVER_WITH_CLIENT_TLS 1)
+endif(GNUTLS_FOUND)
 
 check_include_file("fcntl.h"       LIBVNCSERVER_HAVE_FCNTL_H)
 check_include_file("netinet/in.h"  LIBVNCSERVER_HAVE_NETINET_IN_H)
@@ -107,6 +113,7 @@ set(LIBVNCCLIENT_SOURCES
     ${LIBVNCCLIENT_DIR}/sockets.c
     ${LIBVNCCLIENT_DIR}/vncviewer.c
     ${LIBVNCCLIENT_DIR}/minilzo.c
+    ${LIBVNCCLIENT_DIR}/tls.c
 )
 
 if(ZLIB_FOUND)
@@ -227,7 +234,7 @@ endforeach(test ${LIBVNCSERVER_TESTS})
 file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/client_examples)
 foreach(test ${LIBVNCCLIENT_TESTS})
   add_executable(client_examples/${test} ${LIBVNCCLITEST_DIR}/${test}.c)
-  target_link_libraries(client_examples/${test} vncclient ${SDL_LIBRARIES} ${FFMPEG_LIBRARIES})
+  target_link_libraries(client_examples/${test} vncclient ${GNUTLS_LIBRARIES} ${SDL_LIBRARY} ${FFMPEG_LIBRARIES})
 endforeach(test ${LIBVNCCLIENT_TESTS})
 
 install_targets(/lib vncserver)
diff --git a/client_examples/Makefile.am b/client_examples/Makefile.am
index c44b381..c26c1c9 100644
--- a/client_examples/Makefile.am
+++ b/client_examples/Makefile.am
@@ -19,8 +19,6 @@ SDLVIEWER=SDLvncviewer
 
 SDLvncviewer_CFLAGS=$(SDL_CFLAGS)
 
-SDLvncviewer_SOURCES=SDLvncviewer.c
-
 if HAVE_X11
 X11_LIB=-lX11
 endif
diff --git a/rfb/rfbconfig.h.cmake b/rfb/rfbconfig.h.cmake
index 5e15569..f9f9ba3 100644
--- a/rfb/rfbconfig.h.cmake
+++ b/rfb/rfbconfig.h.cmake
@@ -54,6 +54,9 @@
 /* Define to the version of this package. */
 #define LIBVNCSERVER_PACKAGE_VERSION  "@PACKAGE_VERSION@"
 
+/* Define to 1 if GnuTLS is present */
+#cmakedefine LIBVNCSERVER_WITH_CLIENT_TLS 1
+
 /* Define to 1 if your processor stores words with the most significant byte
    first (like Motorola and SPARC, unlike Intel and VAX). */
 #cmakedefine LIBVNCSERVER_WORDS_BIGENDIAN 1