Re: [QUESTION] Getting configure options for a given QEMU executable?

[Philippe Mathieu-Daudé]

On 3/20/20 11:03 AM, Daniel P. Berrangé wrote:
> On Fri, Mar 20, 2020 at 07:11:03AM +0100, Aleksandar Markovic wrote:
> > Hi,
> >
> > Given a QEMU executable, is there a way to find out the configure options
> > it was built with?
>
> No, you need to get the original build logs.
>
> The binary should contain the full build version (ie the QEMU version
> and the distro specific package release).
>
> On Fedora we build with the "annobin" plugin, which records some info
> about GCC options in the binary, but that's still quite distinct from
> any configure args.
>
> > (context: we frequently get bugs involving QEMU built for a particular
> > Linux distribution, and knowledge about its configure options would
> > certainly be helpful while reproducing and debugging)

It should be fairly easy to add an array with the definitions filled by 
./configure:

- config-host.h
- TARGET-softmmu/config-target.h
- TARGET-softmmu/config-devices.h

> For Fedora the logs are all publically available at a predictable URL e.g.
>
> https://kojipkgs.fedoraproject.org/packages/qemu/$VERSION/$RPM-RELEASE/data/logs/$ARCH/build.log
>
> so
>
> https://kojipkgs.fedoraproject.org/packages/qemu/4.0.0/5.fc31/data/logs/x86_64/build.log
>
> Not sure where other distros might store this info. If people have info
> for more distros, perhaps we could create a wiki page making a list of
> where each distro keeps its biuld logs ?
>
> Regards,
> Daniel