I've definetly not done any such change on my machine. Remember with the
same compile, same environment, if i go back to 2.6.18 i can build uml
fine. If i move to 2.6.18.1 or above it breaks...
I do notice my gcc stddef does have this defined
% grep offsetof /usr/lib/gcc/i686-linux/4.0.3/include/stddef.h
#define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER)
And i notice my compiler has it inbuilt, so maybe this is a gcc 4.0.3
issue ?
% strings /usr/libexec/gcc/i686-linux/4.0.3/cc1|grep offsetof
offsetof_member_designator
__builtin_offsetof
fold_offsetof_1
-Winvalid-offsetof
Warn about invalid uses of the "offsetof" macro
-------- Original Message --------
Subject: Re: More uml build failures on 2.16.19-rc3 and 2.6.18.1
Date: Tue, 24 Oct 2006 09:20:25 -0400
From: Jeff Dike <[email protected]>
To: Mitch <[email protected]>
CC: [email protected]
References: <[email protected]>
On Tue, Oct 24, 2006 at 11:31:19AM +0400, Mitch wrote:
I'm still having build failures on 2.6.18.1 and even the latest -rc3
home /usr/src/sources/kernel/linux-2.6.18% !ma
make ARCH=um
SYMLINK arch/um/include/kern_constants.h
CC arch/um/sys-i386/user-offsets.s
arch/um/sys-i386/user-offsets.c: In function 'foo':
arch/um/sys-i386/user-offsets.c:19: warning: implicit declaration of
function 'offsetof'
The last time I saw this, someone had replaced the glibc kernel
headers with a link to include/ within a kernel pool. There, offsetof
is wrapped in #ifdef __KERNEL__, and inaccessible to userspace.
The glibc headers have a usable offsetof, so fix that, and UML should
build.
Jeff
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