355a356,369
>
> # Workaround for bug in SCons version > 0.97d20071212
> # Scons bug id: 2006 M5 Bug id: 308
> from os.path import dirname, join as joinpath
>
> Dir('isa')
> Dir('isa/microops')
> Dir('isa/decoder')
> Dir('isa/formats')
> Dir('isa/insts')
> isa_dirs = set(map(lambda x:dirname(x), python_files))
> for d in isa_dirs:
> Dir(joinpath('isa/insts', d))
>