#define *tracelog*('level', 'fmt', ...)
#define *vtracelog*('level', 'fmt', 'ap')
-Link with `-llttng-ust`.
+Link with `-llttng-ust -llttng-ust-common`.
DESCRIPTION
[role="term"]
----
-$ cc -o app app.c -llttng-ust
+$ cc -o app app.c -llttng-ust -llttng-ust-common
----
You can create an LTTng tracing session, enable all the `tracelog()`