Testing file offset bits?

[Stephen Kelly]

On 02/18/2013 12:10 PM, Dirk Müller wrote:
> 2013/2/16 Alexander Neundorf <neundorf at kde.org>:
>
>> Dirk Mueller added it in 2008:
>> http://websvn.kde.org/?view=revision&revision=829068
>>
>> If I remove every compiler flag where I'm not sure why it is needed, we'll be
>> left with not much.
> This flag is needed in order to be able to support files > 2GB even on
> 32bit platforms. The default is to use the non-64bit aware syscalls on
> 32bit platforms, which makes every application to SIGXFSZ (which is
> equivalent to a crash) when they see or touch a file > 2GB.
>
> This is an excellent default for upstream, but I decided back then
> that KDE apps should be big-file aware right from the start. The
> reason why this was implemented as a configure check rather than an
> universation global setting is that back then there was btw software
> that did not
> compile properly on x86_64 when _FILE_OFFSET=64 was set (which was a
> bug).
>
> I still think the configure check is a better thing than
> unconditionally adding it, but I don't care either way. the whole
> thing can not be upstreamed though as this is a bold change of
> defaults that we (KDE) can use, but not an upstream project like CMake
> itself.


Thanks for the explanation! I'll see if I can add the information as a 
comment.

Steve.