From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Patrick Colp <pjcolp@cs.ubc.ca>
Cc: Christoph Egger <Christoph.Egger@amd.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>
Subject: Re: build fixes
Date: Tue, 12 Jan 2010 18:44:04 +0000 [thread overview]
Message-ID: <C7727374.62A6%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4B4CB49A.90802@cs.ubc.ca>
On 12/01/2010 17:42, "Patrick Colp" <pjcolp@cs.ubc.ca> wrote:
>> We build everything under tools/ with LFS support enabled, so off_t is 64
>> bits even in 32-bit environments. FYI The bits to enable LFS support are in
>> tools/Rules.mk.
>
> According to the lseek64 man page, for 32-bit architectures to have 64-bit
> off_t, you need:
>
> #define _FILE_OFFSET_BITS 64
>
> Which, as far as I know, isn't set. LFS just makes lseek64 available
> (without it, the function doesn't exist).
I don't think so. 'getconf LFS_CFLAGS' returns -D_FILE_OFFSET_BITS=64 on a
32-bit host. It's LFS64_CFLAGS that gets you the explicit model for
large-file access (i.e., where you have to explicitly use the 64-bit off_t
and lseek variants).
-- Keir
next prev parent reply other threads:[~2010-01-12 18:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 11:58 build fixes Christoph Egger
2010-01-12 17:22 ` Ian Jackson
2010-01-12 17:31 ` Christoph Egger
2010-01-12 17:38 ` Keir Fraser
2010-01-12 17:42 ` Patrick Colp
2010-01-12 17:47 ` Christoph Egger
2010-01-12 18:44 ` Keir Fraser [this message]
2010-01-12 18:00 ` Ian Jackson
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