Re: [boost] Re: Large files ( > 2GB) and boost::filesystem library

From: David Judson (djudson_at_[hidden])
Date: 2004-05-03 09:09:51

At 08:01 AM 5/3/2004, you wrote:
>David Judson <djudson_at_[hidden]> writes:
>
> > In a number of places in the filesystem library on Linux, the ::stat
> > file system call is used. When this call is executed on a file whose
> > size is larger than 2GB, it fails because the file size cannot fit
> > into the default "stat" structure.  This problem happens even when the
> > size information in the stat structure is not used. For example the
> > stat information is used in the directory iterator to look for sub
> > directories.
> >
> > This can be corrected by setting the macro _FILE_OFFSET_BITS to
> > 64. What is the best way to set this macro on Linux?
>
>You can add it to your BUILD variable with
>
>     bjam ... "-sBUILD=<define>_FILE_OFFSET_BITS ..." ...
>
>Or you can put <define>_FILE_OFFSET_BITS in your project requirements
>or default-BUILD.

Thanks - that works for me

> > I have looked at the jam rules and cannot locate the appropriate
> > place to include the definition. Also, what process should be
> > followed if I want to have this macro defined either by default or
> > at least as an option in the boost source tree so that I don't have
> > to modify the build rules each time I install boost?
>
>I don't understand what you have in mind.

I'm thought that it was likely that other users would run up against this 
same problem. I am suggesting that large file support should be enabled by 
default when building boost on Linux.

>--
>Dave Abrahams
>Boost Consulting
>http://www.boost-consulting.com
>
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