NetBSD/mac68k is now using ELF as its native object file format in -curr
ent.  
    With the COMPAT_AOUT_M68K kernel option, all your old a.out binaries should
    still work.  Note that a.out versions of ifconfig(8)
    and route(8) will not work due to some structure
    alignment problems.
    
    A NetBSD/mac68k ELF snapshot is available in the mac68k
    snapshot
    area of the ftp server.  Also available are
    instructions
    for upgrading to ELF from this snapshot or from source.