---
id: liblttng‑ust‑dl
+since: 2.4
---
This LTTng-UST helper causes all calls to `dlopen()` and `dlclose()`
The helper's shared object, `liblttng-ust-dl.so`, registers the
following tracepoints when preloaded:
+<div class="table">
<table class="func-desc">
<thead>
<tr>
</tr>
</tbody>
</table>
+</div>
To use this LTTng-UST helper with any user application, independently of
how the latter is built, do: