Prerequisites
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-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.
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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