Debugging 32/64 bit binaries on os/x 10.7 with cvs gdb?

Robert Lupton the Good
2011-11-29T20:33:00Z

If I build gdb from source on os/x 10.7 and attempt to debug python (a 32/64 bit binary), gdb says;

> $ ~/Src/gnu/gdb/gdb /usr/bin/python
> GNU gdb (GDB) 7.3.50.20111109-cvs
> Copyright (C) 2011 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-apple-darwin11.2.0".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> "/usr/bin/python": not in executable format: File format not recognized
> (gdb) quit
> $ file !$
> file /usr/bin/python
> /usr/bin/python: Mach-O universal binary with 2 architectures
> /usr/bin/python (for architecture x86_64): Mach-O 64-bit executable x86_64
> /usr/bin/python (for architecture i386): Mach-O executable i386

Is there a way to build gdb to work around this?

R