* xen build error on gcc v4.5.0
@ 2010-08-18 10:24 Masroor Vettuparambil
2010-08-18 18:12 ` Jeremy Fitzhardinge
0 siblings, 1 reply; 5+ messages in thread
From: Masroor Vettuparambil @ 2010-08-18 10:24 UTC (permalink / raw)
To: xen-devel
I got the below error when I do a 'make world' in xen-testing.hg . The kernel is 2.6.31.14. gcc version is 4.5.0.
It is working with gcc v4.3.0
Btw I thought the default kernel in xen-testing.hg is 2.6.32.x, but it is still 2.6.31.x.
.............
LD drivers/xen/blktap/blktap.o
LD drivers/xen/blktap/built-in.o
CC drivers/xen/netback/netback.o
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c: In function ânet_rx_actionâ:
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:495:32: error: storage size of ârx_mclâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:496:27: error: storage size of ârx_mmuâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:497:32: error: storage size of âgrant_trans_opâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:498:28: error: storage size of âgrant_copy_opâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:500:13: error: storage size of ânotify_listâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:501:30: error: storage size of âmetaâ isnât constant
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: warning:type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: warning:type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: error: size of unnamed array is negative
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: error: size of unnamed array is negative
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: error: size of unnamed array is negative
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: error: size of unnamed array is negative
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: warning: type defaults to âintâ in type name
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: error: size of unnamed array is negative
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:501:30: warning: unused variable âmetaâ
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:500:13: warning: unused variable ânotify_listâ
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:498:28: warning: unused variable âgrant_copy_opâ
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:497:32: warning: unused variable âgrant_trans_opâ
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:496:27: warning: unused variable ârx_mmuâ
/home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:495:32: warning: unused variable ârx_mclâ
make[9]: *** [drivers/xen/netback/netback.o] Error 1
make[8]: *** [drivers/xen/netback] Error 2
make[7]: *** [drivers/xen] Error 2
make[6]: *** [drivers] Error 2
make[5]: *** [sub-make] Error 2
make[4]: *** [all] Error 2
Thanks,
Masroor
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: xen build error on gcc v4.5.0
2010-08-18 10:24 xen build error on gcc v4.5.0 Masroor Vettuparambil
@ 2010-08-18 18:12 ` Jeremy Fitzhardinge
2010-08-18 19:44 ` M A Young
0 siblings, 1 reply; 5+ messages in thread
From: Jeremy Fitzhardinge @ 2010-08-18 18:12 UTC (permalink / raw)
To: Masroor Vettuparambil; +Cc: xen-devel
On 08/18/2010 03:24 AM, Masroor Vettuparambil wrote:
> I got the below error when I do a 'make world' in xen-testing.hg . The kernel is 2.6.31.14. gcc version is 4.5.0.
> It is working with gcc v4.3.0
> Btw I thought the default kernel in xen-testing.hg is 2.6.32.x, but it is still 2.6.31.x.
>
> .............
>
> LD drivers/xen/blktap/blktap.o
> LD drivers/xen/blktap/built-in.o
> CC drivers/xen/netback/netback.o
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c: In function ânet_rx_actionâ:
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:495:32: error: storage size of ârx_mclâ isnât constant
Looks like a gcc bug. Older gccs can compute __RING_SIZE() as a
compile-time constant, but gcc 4.5.0 apparently isn't doing that. It
is, admittedly, a very complex expression, but gcc shouldn't regress
like this. I'm not sure how to work around it.
J
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:496:27: error: storage size of ârx_mmuâ isnât constant
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:497:32: error: storage size of âgrant_trans_opâ isnât constant
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:498:28: error: storage size of âgrant_copy_opâ isnât constant
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:500:13: error: storage size of ânotify_listâ isnât constant
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:501:30: error: storage size of âmetaâ isnât constant
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: warning:type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: warning:type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:529:2: error: size of unnamed array is negative
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:534:3: error: size of unnamed array is negative
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:548:3: error: size of unnamed array is negative
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:557:3: error: size of unnamed array is negative
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: warning: type defaults to âintâ in type name
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:569:2: error: size of unnamed array is negative
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:501:30: warning: unused variable âmetaâ
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:500:13: warning: unused variable ânotify_listâ
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:498:28: warning: unused variable âgrant_copy_opâ
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:497:32: warning: unused variable âgrant_trans_opâ
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:496:27: warning: unused variable ârx_mmuâ
> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:495:32: warning: unused variable ârx_mclâ
> make[9]: *** [drivers/xen/netback/netback.o] Error 1
> make[8]: *** [drivers/xen/netback] Error 2
> make[7]: *** [drivers/xen] Error 2
> make[6]: *** [drivers] Error 2
> make[5]: *** [sub-make] Error 2
> make[4]: *** [all] Error 2
>
>
> Thanks,
> Masroor
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: xen build error on gcc v4.5.0
2010-08-18 18:12 ` Jeremy Fitzhardinge
@ 2010-08-18 19:44 ` M A Young
2010-08-18 19:55 ` Keir Fraser
0 siblings, 1 reply; 5+ messages in thread
From: M A Young @ 2010-08-18 19:44 UTC (permalink / raw)
To: Jeremy Fitzhardinge; +Cc: xen-devel, Masroor Vettuparambil
[-- Attachment #1: Type: TEXT/PLAIN, Size: 1206 bytes --]
On Wed, 18 Aug 2010, Jeremy Fitzhardinge wrote:
> On 08/18/2010 03:24 AM, Masroor Vettuparambil wrote:
>> I got the below error when I do a 'make world' in xen-testing.hg . The kernel is 2.6.31.14. gcc version is 4.5.0.
>> It is working with gcc v4.3.0
>> Btw I thought the default kernel in xen-testing.hg is 2.6.32.x, but it is still 2.6.31.x.
>>
>> .............
>>
>> LD drivers/xen/blktap/blktap.o
>> LD drivers/xen/blktap/built-in.o
>> CC drivers/xen/netback/netback.o
>> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c: In function ânet_rx_actionâ:
>> /home/xen/xen-4.0-testing.hg/linux-2.6-pvops.git/drivers/xen/netback/netback.c:495:32: error: storage size of ârx_mclâ isnât constant
>
> Looks like a gcc bug. Older gccs can compute __RING_SIZE() as a
> compile-time constant, but gcc 4.5.0 apparently isn't doing that. It
> is, admittedly, a very complex expression, but gcc shouldn't regress
> like this. I'm not sure how to work around it.
One option is to use __CONST_RING_SIZE instead of __RING_SIZE if that is
available. I had a similar problem compiling xen with gcc 4.5 where this
worked.
Michael Young
[-- Attachment #2: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: xen build error on gcc v4.5.0
2010-08-18 19:44 ` M A Young
@ 2010-08-18 19:55 ` Keir Fraser
2010-08-18 23:07 ` Jeremy Fitzhardinge
0 siblings, 1 reply; 5+ messages in thread
From: Keir Fraser @ 2010-08-18 19:55 UTC (permalink / raw)
To: M A Young, Jeremy Fitzhardinge
Cc: xen-devel@lists.xensource.com, Masroor Vettuparambil
On 18/08/2010 20:44, "M A Young" <m.a.young@durham.ac.uk> wrote:
> On Wed, 18 Aug 2010, Jeremy Fitzhardinge wrote:
>> Looks like a gcc bug. Older gccs can compute __RING_SIZE() as a
>> compile-time constant, but gcc 4.5.0 apparently isn't doing that. It
>> is, admittedly, a very complex expression, but gcc shouldn't regress
>> like this. I'm not sure how to work around it.
>
> One option is to use __CONST_RING_SIZE instead of __RING_SIZE if that is
> available. I had a similar problem compiling xen with gcc 4.5 where this
> worked.
Yes that is exactly why Jan Beulich introduced __CONST_RING_SIZE, in
xen-unstable:20975. Should be a simple patch to pv_ops netfront/back drivers
to make use of it.
-- Keir
> Michael Young
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: xen build error on gcc v4.5.0
2010-08-18 19:55 ` Keir Fraser
@ 2010-08-18 23:07 ` Jeremy Fitzhardinge
0 siblings, 0 replies; 5+ messages in thread
From: Jeremy Fitzhardinge @ 2010-08-18 23:07 UTC (permalink / raw)
To: Keir Fraser
Cc: xen-devel@lists.xensource.com, Masroor Vettuparambil, M A Young
On 08/18/2010 12:55 PM, Keir Fraser wrote:
> On 18/08/2010 20:44, "M A Young" <m.a.young@durham.ac.uk> wrote:
>
>> On Wed, 18 Aug 2010, Jeremy Fitzhardinge wrote:
>>> Looks like a gcc bug. Older gccs can compute __RING_SIZE() as a
>>> compile-time constant, but gcc 4.5.0 apparently isn't doing that. It
>>> is, admittedly, a very complex expression, but gcc shouldn't regress
>>> like this. I'm not sure how to work around it.
>> One option is to use __CONST_RING_SIZE instead of __RING_SIZE if that is
>> available. I had a similar problem compiling xen with gcc 4.5 where this
>> worked.
> Yes that is exactly why Jan Beulich introduced __CONST_RING_SIZE, in
> xen-unstable:20975. Should be a simple patch to pv_ops netfront/back drivers
> to make use of it.
Ah, OK. I'll bring it across and sprinkle it around.
J
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-08-18 23:07 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2010-08-18 10:24 xen build error on gcc v4.5.0 Masroor Vettuparambil
2010-08-18 18:12 ` Jeremy Fitzhardinge
2010-08-18 19:44 ` M A Young
2010-08-18 19:55 ` Keir Fraser
2010-08-18 23:07 ` Jeremy Fitzhardinge
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