message: ensure C++ is used for link command
diff: @@ -630,7 +630,7 @@ if test "$PHP_SWOOLE" != "no"; then
  LDFLAGS="$LDFLAGS -lboost_context"
  fi
  - PHP_NEW_EXTENSION(swoole, $swoole_source_file, $ext_shared)
  + PHP_NEW_EXTENSION(swoole, $swoole_source_file, $ext_shared,,, cxx)
  PHP_ADD_INCLUDE([$ext_srcdir])
  PHP_ADD_INCLUDE([$ext_srcdir/include])
  