[ccache] auto-disabling ccache when gcc gets plugins?

[Eitan Adler]

On 18 October 2012 20:18, Martin Pool <mbp at sourcefrog.net> wrote:
> Disabling all caching because any plugins are used seems like a bit of
> overkill: while they _can_ be impure, I wonder if most will be?  But
> probably disabling when MELT is present would be reasonable.
>
> There is existing code to disable caching when particular flags are present
> so it should be a one-line fix.

I'd rather off-by-default rather than on. ccache should be
conservative about it can cache if it doesn't know (or at least warn
for unknown plugins).

-- 
Eitan Adler