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

[Pasi Kärkkäinen <pasik@xxxxxx>]

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


-- 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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