that, the kernel version may probably be older, but we can't provide
any guarantee. Please let us know if you are able to go lower
without any problems.
- - **[`liburcu`](http://www.liburcu.org/) >= 0.8.0**: userspace RCU library,
+ - **[`liburcu`](http://www.liburcu.org/) >= 0.11.0**: userspace RCU library,
by Mathieu Desnoyers and Paul E. McKenney.
- **`libpopt` >= 1.13**: command line arguments parsing library.
- Debian/Ubuntu package: `libpopt-dev`
- - **`libuuid`**: universally unique ID library
- - Debian/Ubuntu package: `uuid-dev`
- **`libxml2` >= 2.7.6**: XML document parsing library. Needed for
tracing session configuration saving/loading and machine interface
output support.
pages with the `--help` option or with the `lttng help` command.
Note that without `man`, you cannot get offline help with
LTTng-tools commands, not even their usage.
+ - **libpfm >= 4.0**: needed to run the perf regression test suite.
+ - Debian/Ubuntu package: `libpfm4-dev`
LTTng-tools supports both the [LTTng Linux Kernel tracer](https://lttng.org)
and [LTTng user space tracer](https://lttng.org) released as part of the same
- **GNU Autotools** (**Automake >= 1.10**, **Autoconf >= 2.64**,
**Autoheader >= 2.50**; make sure your system-wide `automake` points
- to a recent version!)
+ to a recent version)
- **[GNU Libtool](http://www.gnu.org/software/autoconf/) >= 2.2**
- **Flex >= 2.5.35**
- **Bison >= 2.4**