Re: [Xen-users] Error compiling Xen in configuring stubdom/gmp with glibc-2.23 on Arch Linux

[Wei Liu <wei.liu2@xxxxxxxxxx>]

close 53

thanks

On Mon, Mar 07, 2016 at 11:46:55AM +0000, Wei Liu wrote:
> On Mon, Mar 07, 2016 at 10:38:47AM +1000, John Thomson wrote:
> > Hi,
> > 
> > I am encountering an error compiling Xen (4.6.1) in configuring
> > stubdom/gmp on x86_64 Arch Linux.
> > I think it may be due to the system's glibc-2.23. System gcc is 5.3.0.
> > Compiling was working fine before these system packages were updated.
> > Other packages were updated at the same time, so I am not sure which to
> > blame.
> > 
> > Error:
> > checking size of unsigned short... configure: error: cannot compute
> > sizeof (unsigned short)
> > See `config.log' for more details.
> > Makefile:170: recipe for target 'gmp-x86_64' failed
> > make[1]: *** [gmp-x86_64] Error 77
> > 
> > Analysing the error in the configure test program, ferror after fprintf
> > always returns 1.
> > The program still appears to function as intended, and outputs the
> > unsigned short size to conftest.val.
> > Appending a clearerr(f) after the fprintf (f, ...) calls appears to
> > workaround.
> > 
> > When compiling the test program using system includes and libraries,
> > ferror returns 0.
> > 
> > My guess is that this may be due to using newlib cross-root includes and
> > the system’s glibc libraries.
> 
> This looks like a bug to me. Stubdom shouldn't be using host system's
> library.
> 
> > I have not yet worked out how to resolve this. I have not been able to
> > work out how to use -nostdlib and the cross-root libraries. I get errors
> > for undefined functions.
> > Could I get some help resolving this, or where can I go from here?
> > 
> 
> If stubdom is not absolutely required in your environment, I suggest you
> disable it.
> 

FYI I committed a fix for this just now.

The patch can be found at 

https://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=668e4edf92fcf7cb929eed221059a3eeb02722c3

Wei.

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