Re: Xen 4.2.0-rc2: make tools fails on Fedora 17, ipxe build problems with gcc 4.7

[Keir Fraser <keir@xen.org>]

On 13/08/2012 23:07, "Pasi Kärkkäinen" <pasik@iki.fi> wrote:

> Hello again,
> 
> So to be able to build Xen 4.2.0-rc2 on Fedora 17 with gcc 4.7
> I had to apply these three patches to ipxe:
> 
> http://lists.ipxe.org/pipermail/ipxe-devel/2012-March/001279.html
> http://lists.ipxe.org/pipermail/ipxe-devel/2012-March/001280.html
> http://permalink.gmane.org/gmane.network.ipxe.devel/1216

I've checked these into etherboot/patches/ in xen-unstable.hg.

 -- Keir

> -- Pasi
> 
> 
> On Tue, Aug 14, 2012 at 12:44:49AM +0300, Pasi Kärkkäinen wrote:
>> On Tue, Aug 14, 2012 at 12:39:03AM +0300, Pasi Kärkkäinen wrote:
>>> On Tue, Aug 14, 2012 at 12:35:58AM +0300, Pasi Kärkkäinen wrote:
>>>> On Mon, Aug 13, 2012 at 11:39:50PM +0300, Pasi Kärkkäinen wrote:
>>>>> Hello,
>>>>> 
>>>>> I just grabbed
>>>>> http://bits.xensource.com/oss-xen/release/4.2.0-rc2/xen-4.2.0-rc2.tar.gz
>>>>> and tried to build it on Fedora 17 x86_64 host (gcc 4.7.0):
>>>>> 
>>>>> make tools:
>>>>> 
>>>>> ..
>>>>> make[5]: Entering directory `/root/xen/xen-4.2.0-rc2/tools/firmware'
>>>>> make -C etherboot all
>>>>> make[6]: Entering directory
>>>>> `/root/xen/xen-4.2.0-rc2/tools/firmware/etherboot'
>>>>> make -C ipxe/src bin/rtl8139.rom
>>>>> make[7]: Entering directory
>>>>> `/root/xen/xen-4.2.0-rc2/tools/firmware/etherboot/ipxe/src'
>>>>>   [BUILD] bin/isa.o
>>>>> drivers/bus/isa.c: In function 'isabus_probe':
>>>>> drivers/bus/isa.c:112:18: error: array subscript is above array bounds
>>>>> [-Werror=array-bounds]
>>>>> cc1: all warnings being treated as errors
>>>>> make[7]: *** [bin/isa.o] Error 1
>>>>> make[7]: Leaving directory
>>>>> `/root/xen/xen-4.2.0-rc2/tools/firmware/etherboot/ipxe/src'
>>>>> 
>>>> 
>>>> Ok the patch from Olaf is here:
>>>> http://lists.ipxe.org/pipermail/ipxe-devel/2012-March/001279.html
>>>> 
>>>> Should we apply that patch to xen-unstable for Xen 4.2 ?
>>>> 
>>> 
>>> And then there's the next build problem:
>>> 
>>>   [BUILD] bin/myri10ge.o
>>> drivers/net/myri10ge.c: In function 'myri10ge_command':
>>> drivers/net/myri10ge.c:308:3: error: dereferencing type-punned pointer will
>>> break strict-aliasing rules [-Werror=strict-aliasing]
>>> drivers/net/myri10ge.c:310:2: error: dereferencing type-punned pointer will
>>> break strict-aliasing rules [-Werror=strict-aliasing]
>>> cc1: all warnings being treated as errors
>>> make[7]: *** [bin/myri10ge.o] Error 1
>>> make[7]: Leaving directory
>>> `/root/xen/xen-4.2.0-rc2/tools/firmware/etherboot/ipxe/src'
>>> 
>>> 
>>> And patch from Olaf here:
>>> http://lists.ipxe.org/pipermail/ipxe-devel/2012-March/001280.html
>>> 
>> 
>> And the third build problem:
>> 
>>   [BUILD] bin/qib7322.o
>> drivers/infiniband/qib7322.c: In function 'qib7322_probe':
>> drivers/infiniband/qib7322.c:2141:28: error: 'old_value' may be used
>> uninitialized in this function [-Werror=maybe-uninitialized]
>> drivers/infiniband/qib7322.c:2123:11: note: 'old_value' was declared here
>> cc1: all warnings being treated as errors
>> make[7]: *** [bin/qib7322.o] Error 1
>> make[7]: Leaving directory
>> `/root/xen/xen-4.2.0-rc2/tools/firmware/etherboot/ipxe/src'
>> 
>> 
>> And patch from Christian Hesse here:
>> http://permalink.gmane.org/gmane.network.ipxe.devel/1216
>> 
>> 
>> -- Pasi
>> 
>> 
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> 
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