Re: [Qemu-devel] [PATCH v4 05/10] qemu-ga: Add configure options to specify path to Windows/VSS SDK

[Daniel P. Berrange]

On Fri, Jun 28, 2013 at 01:18:10PM +0200, Paolo Bonzini wrote:
> Il 28/06/2013 13:01, Daniel P. Berrange ha scritto:
> >>> What is the license of the VSS SDK ?  In particular is the license
> >>> compatible with QEMU to allow us to link to it from GPL code ?
> >>
> >> Doesn't it fall under the "operating system component" exception?
> > 
> > Maybe, maybe no. I think it depends what the VSS SDK actually includes.
> > 
> > IANAL, but my interpretation is that the exception would only apply
> > to stuff that is distributed as part of the base Windows install. Since
> > this is a separate download from Microsoft, it isn't clear to me that
> > the exception would apply in this case.
> > 
> > Does the VSS SDK actually include the .dll library that qemu-ga would
> > be linking aginst, or is the .dll part of base windows install, and
> > VSS SDK merely includes the header files needed for compilation ?
> 
> Only the headers, the IDL files, and the "import libraries":
> 
> Program Files/Microsoft/VSSSDK72/lib/winxp/obj/i386/vss_uuid.lib
> Program Files/Microsoft/VSSSDK72/lib/winxp/obj/i386/vssapi.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/ia64/vss_uuid.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/ia64/vssapi.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/i386/vssapi.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/i386/vss_uuid.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/amd64/vss_uuid.lib
> Program Files/Microsoft/VSSSDK72/lib/win2003/obj/amd64/vssapi.lib
> Program Files/Microsoft/VSSSDK72/inc/winxp/vss.h
> Program Files/Microsoft/VSSSDK72/inc/winxp/vswriter.h
> Program Files/Microsoft/VSSSDK72/inc/winxp/vsbackup.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vdslun.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vswriter.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsmgmt.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vscoordint.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vscoordint.idl
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsswprv.idl
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsswprv.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vss.idl
> Program Files/Microsoft/VSSSDK72/inc/win2003/vss.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vdslun.idl
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsbackup.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsprov.idl
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsprov.h
> Program Files/Microsoft/VSSSDK72/inc/win2003/vsmgmt.idl

That sounds more reasonable then from the POV of the gpl system
components exception.

BTW, I notice that mingw64 includes the vss.h header and vssapi.a library,
so I wonder if that's sufficient to compile this code, without needing
to use the VSS SDK download at all.

Daniel
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