Prerequisites
-------------
-LTTng-UST depends on [liburcu](http://liburcu.org/) v0.7.2 at build and
+LTTng-UST depends on **[liburcu](http://liburcu.org/) >= 0.12** at build and
run times. It also optionally depends on libnuma.
compile the Git repository tree:
- [GNU Autotools](http://www.gnu.org/software/autoconf/)
- (**Automake >= 1.10**, **Autoconf >= 2.50**,
- **Autoheader >= 2.50**;
+ (**Automake >= 1.12**, **Autoconf >= 2.69**,
+ **Autoheader >= 2.69**;
make sure your system-wide `automake` points to a recent version!)
- **[GNU Libtool](https://www.gnu.org/software/libtool/) >= 2.2**
+ - **[pkg-config](https://www.freedesktop.org/wiki/Software/pkg-config/)**
### Optional dependencies
Since LTTng-UST 2.3, both tracepoints and tracepoint providers can be
compiled in C++. To compile tracepoint probes in C++, you need
-G++ >= 4.7 or Clang.
+G++ >= 4.7 or Clang. The C++ compilers need to support C++11.
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