Re: [patch] config language dep_* enhancements

[Peter Samuelson]

[Roman Zippel]
> with the latest modifications this can be written as:
> 
> dep_tristate NEW !OLD
> dep_tristate OLD !NEW
> 
> This still has the back reference and you have to run 'make config'
> twice to change NEW from n to y.

I don't see this as a big problem.  Most people don't use the bare
Configure script anyway, except for 'make oldconfig'.

With the ! patch, Menuconfig does the right thing here.

> It's possible to fix this:
> 
> tristate DRV
> if [ DRV == y ]; then
>   choice OLD NEW
> fi
> if [ DRV == m ]; then
>   dep_tristate NEW DRV
>   dep_tristate OLD DRV
> fi

Simpler and perhaps more intuitive:

tristate DRV
dep_mbool DRV_OLD DRV

dep_mbool COMMON_OPT DRV
dep_mbool OLD_OPT1 DRV_OLD
dep_mbool OLD_OPT2 DRV_OLD
dep_mbool NEW_OPT1 DRV !DRV_OLD
dep_mbool NEW_OPT2 DRV !DRV_OLD

I don't see a real need for a separate symbol announcing DRV_NEW.  Let
the Makefile cope.

Peter