Fix build with tunnel support when compiling with CMake.

CMakeLists.txt

@@ -61,6 +61,13 @@ endif()
 find_package(BelleSIP REQUIRED)
 find_package(MS2 REQUIRED)
 find_package(XML2 REQUIRED)
+if(ENABLE_TUNNEL)
+	find_package(Tunnel)
+	if(NOT TUNNEL_FOUND)
+		message(WARNING "Could not find the tunnel library!")
+		set(ENABLE_TUNNEL OFF CACHE BOOL "Enable tunnel support" FORCE)
+	endif()
+endif()
 
 
 include_directories(
@@ -72,6 +79,9 @@ include_directories(
 	${MS2_INCLUDE_DIRS}
 	${XML2_INCLUDE_DIRS}
 )
+if(ENABLE_TUNNEL)
+	include_directories(${TUNNEL_INCLUDE_DIRS})
+endif()
 
 if(MSVC)
 	include_directories(${CMAKE_PREFIX_PATH}/include/MSVC)

coreapi/CMakeLists.txt

@@ -53,7 +53,6 @@ set(SOURCE_FILES
 	info.c
 	linphonecall.c
 	linphonecore.c
-	linphone_tunnel_stubs.c
 	linphone_tunnel_config.c
 	lpconfig.c
 	lsd.c
@@ -89,6 +88,8 @@ if(ENABLE_TUNNEL)
 		TunnelManager.cc
 	)
 	add_definitions(-DTUNNEL_ENABLED)
+else()
+	list(APPEND SOURCE_FILES linphone_tunnel_stubs.c)
 endif()
 
 set(GENERATED_SOURCE_FILES
@@ -116,6 +117,9 @@ set(LIBS
 	${MS2_LIBRARIES}
 	${XML2_LIBRARIES}
 )
+if(ENABLE_TUNNEL)
+	list(APPEND LIBS ${TUNNEL_LIBRARIES})
+endif()
 if(WIN32)
 	list(APPEND LIBS shlwapi)
 endif()