AM_CONDITIONAL(BUILD_TUNNEL, test x$enable_tunnel = xtrue)
if test x$enable_tunnel = xtrue; then
PKG_CHECK_MODULES(TUNNEL, tunnel >= 0.3.3)
AM_CONDITIONAL(BUILD_TUNNEL, test x$enable_tunnel = xtrue)
if test x$enable_tunnel = xtrue; then
PKG_CHECK_MODULES(TUNNEL, tunnel >= 0.3.3)