Messages in this thread |  | | | Date | Sun, 19 Nov 2006 09:25:07 -0500 | | From | Jeff Dike <> | | Subject | Re: uml fails to compile due to missing offsetof |
On Sun, Nov 19, 2006 at 01:00:01PM +0100, Olaf Hering wrote: > > I fail to see how arch/um/sys-i386/user-offsets.c can compile since > offsetof() was declared __KERNEL__ only in include/linux/stddef.h. > Does it work for anyone else?
It obviously works for me. offsetof is very standard C. I'd venture to say that a system which can't find it has a broken gcc installation.
> If so, is linux/stddef.h or /usr/include/linux/stddef.h used during > compilation?
/usr/include/linux/stddef.h (but see below) - this is a userspace file, so it builds against libc headers.
> The x86_64 variant looks weird as well, linux/stddef.h is appearently > included via some other headers.
Well, /usr/include/linux/stddef.h on my x86_64 box has no offsetof, despite being FC5 just like my i386 laptop. Yay for consistency.
However, there is a /usr/lib/gcc/x86_64-redhat-linux/4.1.1/include/stddef.h which defines offsetof (and there's a corresponding file on my laptop), so I bet that's the true source of offsetof.
Jeff -- Work email - jdike at linux dot intel dot com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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