[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] xen build error on gcc v4.5.0
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 constantLooks 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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