On Tue, May 26, 2020 at 10:44 PM Martin Jansa <martin.ja...@gmail.com> wrote:
>
> On Tue, May 26, 2020 at 10:22:07PM +0200, Andrey Zhizhikin wrote:
> > Kernel 4.4 is also LTS and has (had) a very long time span, so I
> > believe there are some people out there who might still have it in
> > their Products (industrial applications are pretty conservative guys).
> > I have to admit that Yocto 3.1 + Kernel 4.4 is a rather strange
> > combination, but it also has a valid reason to exist.
> >
> > I guess reverting this patch is not really an option, but this topic
> > deserves then a bit of documentation somewhere so people can look this
> > up and have a quick fix for themselves. The question is: where to put
> > this information?
> >
> > Honestly, it didn't take me long to find the commit that solved the
> > build, it took me rather long to figure out why I didn't see changes
> > from it on the [dunfell]...
> >
> > >
> > > What exactly was the build error that you saw ?
> >
> > Exactly what JaMa had and fixed with his commit, namely a multitude of:
> > <bitops> error: #include nested too deeply
> >
> > and some of:
> >
> > <snip>/perf/1.0-r9/perf-1.0/tools/include/linux/list.h:5:10: fatal
> > error: ../../../include/linux/list.h: No such file or directory
>
> But this isn't your only issue with perf on 4.4 kernel, right?
>
> I still carry whatever is needed in a .bbappend, for dunfell I have
> also:
>
> # The tools/lib/api in kernels older than 4.8 don't respect WERROR env
> # variable exported by perf.bb
> EXTRA_OEMAKE += "EXTRA_CFLAGS='-ldw -Wno-error=stringop-truncation'"
>
> # scripting PACKAGECONFIG is now using python3, but perf in kernel
> # supports python3 only with 4.17-rc1 and newer kernel (here we are
> # currently using 4.4.84), see:
> #
> http://lists.openembedded.org/pipermail/openembedded-core/2019-September/286902.html
> PACKAGECONFIG_remove = "scripting"
Mine's got only:
PACKAGECONFIG_remove = "scripting"
And now I have in addition:
+PERF_SRC = "Makefile \
+ include \
+ tools/arch \
+ tools/build \
+ tools/include \
+ tools/lib \
+ tools/Makefile \
+ tools/perf \
+ tools/scripts \
+ scripts/ \
+ arch/${ARCH}/Makefile \
I guess you can safely drop the -Wno-error=stringop-truncation, it was
fixed with [d943a53ac6d7bd5eab93adecfe9b37356e46da44] in 4.4.y
>
> Maybe some of it got already resolved elsewhere, this bbappend just
> collects whatever tweaks are needed when it gets broken and I very
> rarely have time to go back through them to re-check if it's still
> needed (with newer oe-core revision or slightly newer 4.4 kernel).
>
> Cheers,
--
Regards,
Andrey.
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