BOOST_INCLUDES="-isystem ${boost_include_path}"
CPPFLAGS="$CPPFLAGS $BOOST_INCLUDES"
fi
-AC_CHECK_HEADERS([boost/shared_ptr.hpp boost/foreach.hpp boost/interprocess/sync/interprocess_upgradable_mutex.hpp boost/date_time/posix_time/posix_time_types.hpp boost/asio.hpp boost/asio/ip/address.hpp boost/asio/signal_set.hpp boost/system/error_code.hpp boost/atomic.hpp boost/circular_buffer.hpp boost/functional/hash.hpp boost/asio/ssl.hpp],,
+AC_CHECK_HEADERS([boost/shared_ptr.hpp boost/foreach.hpp boost/interprocess/sync/interprocess_upgradable_mutex.hpp boost/date_time/posix_time/posix_time_types.hpp boost/asio.hpp boost/asio/ip/address.hpp boost/asio/signal_set.hpp boost/system/error_code.hpp boost/atomic.hpp boost/circular_buffer.hpp boost/functional/hash.hpp],,
AC_MSG_ERROR([Missing required boost header files]))
AC_CHECK_HEADERS(boost/asio/coroutine.hpp,,AC_MSG_RESULT(not found, using built-in header.))