[PATCH] PAM Support for Busybox Login

[Bernhard Fischer]

On Sun, Oct 01, 2006 at 07:34:23AM -0700, Dave Hylands wrote:
>Hi Denis,
>
>> +#ifdef CONFIG_PAM
>>
>> #ifdef does not detect typos in macro names. #if ENABLE_PAM is better.
>
>#if doesn't detect typos in macros either.  The C preprocessor treats
>undefined macros as 0 (at least for the purposes of #if statements).
>
>There may be other reasons to prefer #if to #ifdef, but the particular
>one you gave doesn't wash.

Long-term, we will not define _any_ CONFIG_* preprocessor stuff, but
only the ENABLE_ to either 1 or 0, so
#if ENABLE_this_or_that
is the proper, modern way to go.