NMCMD <command + args>
If function tracing with GCC 2.95.2+'s
-finstrument-functionsis used, Intel Trace Collector is called at function entry/exit. Before logging these events, it has to map from the function's address in the executable to its name.
This is done with the help of an external program, usually nm. If it is not appropriate on your system, you can override the default. The executable's filename (including the path) is appended at the end of the command, and the command is expected to print the result to stdout in the format defined for POSIX.2 nm.