Re: [RFT] GCC 8.1

[Martin Jansa <martin.jansa@gmail.com>]

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On Mon, May 14, 2018 at 10:33:41AM -0600, Dan McGregor wrote:
> On 10 May 2018 at 12:53, Khem Raj <raj.khem@gmail.com> wrote:
> > Hi Dan,
> >
> > Thanks for testing
> >
> > On 5/10/18 7:34 AM, Dan McGregor wrote:
> >>
> >> On 4 May 2018 at 18:26, Khem Raj <raj.khem@gmail.com> wrote:
> >>>
> >>> Hi All
> >>>
> >>> As you might have noticed that gcc 8.1 was released this week, I am
> >>> calling out for some testing help on testing branch so we can weed out
> >>> issues you might see in your setups. so if you have your
> >>> builders idling over weekend, then you know what they can do this weekend
> >>> :)
> >>>
> >>
> >> Thanks for this. The only two issues I noticed are that the
> >> Wandboard's kernel doesn't compile with gcc 8.1,
> >
> >
> >
> > what errors do you see ?
> 
> I expect the standard "Linux 4.1" errors. A bunch of ignored
> attributes and incompatible type aliases:
> 
> tmp-glibc/work-shared/wandboard/kernel-source/include/linux/log2.h:22:1:
> warning: ignoring attribute 'noreturn' because it conflicts with
> attribute 'const' [-Wattributes]
>  int ____ilog2_NaN(void)

Try backporting this change:
https://github.com/torvalds/linux/commit/474c90156c8dcc2fa815e6716cc9394d7930cb9c

> tmp-glibc/work-shared/wandboard/kernel-source/include/linux/syscalls.h:195:18:
> warning: 'sys_clone' alias between functions of incompatible types
> 'long int(long unsigned int,  long unsigned int,  int *, int,  int *)'
> and 'long int(long int,  long int,  long int,  long int,  long int)'
> [-Wattribute-alias]
>   asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> 
> I can give you the full compile log if you'd like, but I think others
> want it kept off the list.
> 
> >
> >  and gcc-sanitizers
> >>
> >> now throws a packaging error on (at least) x86_64.
> >> ${libdir}/liblsan_preinit.o is a new file that should go into
> >> liblsan-dev.
> >
> >
> > That seems to be the case, I wonder why my world build for qemux86_64 did
> > not find this error. I would like to reproduce this and the fix is then
> > simple.
> 
> My x86_64 build was multilib enabled. I doubt that had anything to do
> with it, but I suppose it's possible.
> 
> >
> >
> >>
> >>> Highlighted changes are
> >>>
> >>> https://gcc.gnu.org/gcc-8/changes.html
> >>>
> >>> and porting doc is
> >>>
> >>> https://gcc.gnu.org/gcc-8/porting_to.html
> >>>
> >>> The branch is here
> >>>
> >>> http://git.openembedded.org/openembedded-core-contrib/log/?h=kraj/gcc-8
> >>>
> >>> Its uptodate on top of current master oe-core
> >>>
> >>> May fourth be with you !!
> >>>
> >>> Cheers!
> >>>
> >>> -Khem
> >>> --
> >>> _______________________________________________
> >>> Openembedded-core mailing list
> >>> Openembedded-core@lists.openembedded.org
> >>> http://lists.openembedded.org/mailman/listinfo/openembedded-core
> -- 
> _______________________________________________
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-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa@gmail.com

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