bare/qemu broken?

[Joel Sherrill]

On Mon, Apr 6, 2020 at 12:43 PM Gedare Bloom <gedare at rtems.org> wrote:

> This is a problem caused by newer versions of perl. The unescaped { }
> in regex was deprecated and then eliminated. It requires an upstream
> fix to escape with \.
>

Unfortunately, it appears that the qemu bset only works on older
distributions.
The qemu4 bset is a newer qemu version that builds on newer distributions.

Seems to be a rat hole. It might be worth considering renaming qemu to qemu2
if that's the major version so people have to make a more conscious choice.

>
> On Mon, Apr 6, 2020 at 11:38 AM Gedare Bloom <gedare at rtems.org> wrote:
> >
> > I'm trying to build qemu in RSB, I get a build error, from the tail of
> > the report it appears as:
> >
> >   GEN   kvm_stat.1
> > Unescaped left brace in regex is illegal here in regex; marked by <--
> > HERE in m/^\@strong{ <-- HERE (.*)}$/ at
> >
> /mnt/devel/rtems/rtems-source-builder/bare/build/qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144-x86_64-linux-gnu-1/qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144/scripts/
> texi2pod.pl
> > line 320.
> > Makefile:509: recipe for target 'qemu-nbd.8' failed
> > make: *** [qemu-nbd.8] Error 255
> > make: *** Waiting for unfinished jobs....
> > Unescaped left brace in regex is illegal here in regex; marked by <--
> > HERE in m/^\@strong{ <-- HERE (.*)}$/ at
> >
> /mnt/devel/rtems/rtems-source-builder/bare/build/qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144-x86_64-linux-gnu-1/qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144/scripts/
> texi2pod.pl
> > line 320.
> > Makefile:515: recipe for target 'kvm_stat.1' failed
> > make: *** [kvm_stat.1] Error 255
> >   GEN   qga/qapi-generated/qga-qapi-types.h
> > shell cmd failed: /bin/sh -ex
> >
> /mnt/devel/rtems/rtems-source-builder/bare/build/qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144-x86_64-linux-gnu-1/do-build
> > error: building
> qemu-42d58e7c6760cb9c55627c28ae538e27dcf2f144-x86_64-linux-gnu-1
> >                                                               407,1
>    Bot
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