debugging wine itself with GDB

I was taking a look at
http://wiki.jswindle.com/index.php/Debugging_Wine

to see how to debug wine with gdb,
and there was reference to starting up gdb using wine-pthread, but I see no 
such executable now.

I can attach gdb after it starts to run, but then do not get all the symbol 
information.

There is wine-preloader but it seems to want an ELF file as an argument.