Debugging C++

Library dependencies

otool -L <executable> to list shared libraries linked to an executable.
nm <executable> | grep LZ4_compress_fast to check if a specific symbol is present in the binary.
nm -u <executable> to list undefined symbols in the binary. Notice: this may include symbols from libraries that are not linked to the binary, but are available in the system.

Using lldb

Start lldb with the executable:
```
lldb ./my_executable
```

Set breakpoints. Can use quotes and parameters or add line numbers, use conditions (-c)

breakpoint set --name my_function
break set -n 'hipo_output::writeHeader(outputContainer*, std::map<std::string, double>, gBank)'
break set --file hipo_output.cc --line <line_number>
break set -n "GOptions::getVerbosityFor" -c "tag.size() == 0"

Run the program:
```
run <options>
```

Step through the code:

step        # or just 's'. Step into the next line of code
next        # or just 'n'. Step over the next line of code
frame info  # Show current frame information
list        # Show the current source code around the current line
bt          # Backtrace to see the call stack
finish      # Step out of the current function

Inspect / Print variable values:

frame variable    # show all variables in the current frame
p variable_name   # print a specific variable value
p *variable_name  # if they're pointers