[mythtv] A cautionary tale on the use of ccache

[Roger James]

I found out that I can fix it by adding

hash_dir = true

to ~/.ccache/ccache.conf

Roger


On 20 February 2017 5:16:05 pm roger <roger at beardandsandals.co.uk> wrote:

>
>
> On 20/02/17 16:39, Stuart Auchterlonie wrote:
>> I think we should put cache -C somewhere in the distclean!
>> That would entirely defeat it's purpose, especially on the build slaves
>> which have limited resources. The arm builds take long enough with
>> a primed ccache!
>>
>> If you are happy taking the hit of building the whole thing from
>> scratch each time, then uninstall it.
>>
>> For the rest of us it saves an enormous amount of time during a
>> dev / build / test cycle.
>>
>> Personally I make a note to do a full distclean and a ccache clean
>> whenever a significant change to the repositories happen. I also don't
>> happen to work in multiple build directories (apart from fixes/0.28 and
>> master) at one time.
>>
>>
> I must admit I thought that ccache handled multiple build directories.
> But I just had a quick look at the man page and it looks like it needs
> some configuration help to do it.
>
> Yes it is a bit obscure, but it at least only affects debug info in
> files that you haven't changed, and it is only when you mix in an
> undocumented complex infrastructure like eclipse that it really bites you!
>
> When I have finished spitting out feathers I might look at it.
>
> Roger
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