Re: New filesystem for Linux

From: Jan Engelhardt
Date: Fri Nov 03 2006 - 16:52:53 EST


>> > > > So anyway, why do you need _llseek? Can't you just use lseek()
>> > > > like
>> > > > everyone else?
>> > >
>> > > Because I want it to work with glibc 2.0 that I still use on one
>> > > machine.
>> >
>> > BTW. is it some interaction with symbols defined elsewhere or were
>> > _syscall
>> > macros dropped altogether? Which glibc symbol should I use in #ifdef
>> > to tell if
>> > glibc has 64-bit support?
>>
>> -D_LARGEFILE_SOURCE=1 -D_LARGE_FILES -D_FILE_OFFSET_BITS=64
>>
>> I think the second is not needed.
>
> I see, but the question is how do I test in C preprocessor that glibc is
> sufficiently new to react on them?

__GLIBC_MAJOR__ and __GLIBC_MINOR__


-`J'
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