[meta-freescale] building core-image-minimalfort1042d4rdb*failsbuilding hypervisor

[Robert P. J. Day]

On Tue, 11 Jul 2017, Zhenhua Luo wrote:

> Hi all,
>
> We will take a look the issue and fix it ASAP.
>
>
> Best Regards,
>
> Zhenhua
>
> > -----Original Message-----
> > From: meta-freescale-bounces at yoctoproject.org [mailto:meta-freescale-
> > bounces at yoctoproject.org] On Behalf Of Kursad Oney CW
> > Sent: Sunday, July 09, 2017 11:24 PM
> > To: Robert P. J. Day <rpjday at crashcourse.ca>
> > Cc: meta-freescale at yoctoproject.org
> > Subject: Re: [meta-freescale] building core-image-
> > minimalfort1042d4rdb*failsbuilding hypervisor
> >
> > Robert,
> >
> > >
> > > > Robert,
> > > >
> > > > >   to make a long story (hopefully) short, i was trying to build
> > > > > both the 32- and 64-bit versions of t1042d4rdb, and both failed in
> > > > > exactly the same place, trying to build the hypervisor recipe, so
> > > > > i'm open to suggestions (this is on a fully-updated fedora system):
> > > > >
> > > > > [...truncated...]
> > > > > | /home/rpjday/oe/builds/t1042d4rdb-64b/tmp/work/ppc64e5500-poky-
> > linux/hypervisor/git-r3/git/libos/lib/sprintf.c: In function 'sprintf':
> > > > > | /home/rpjday/oe/builds/t1042d4rdb-64b/tmp/work/ppc64e5500-poky-
> > linux/hypervisor/git-r3/git/libos/lib/sprintf.c:459:6: error: specified bound
> > 18446744073709551615 exceeds maximum object size 9223372036854775807
> > [-Werror=format-truncation=]
> > > > > |   int ret = vsnprintf(buf, ULONG_MAX, str, args);
> > > > > |       ^~~
> > > > > | cc1: all warnings being treated as errors
> > > >
> > > > I think gcc is complaining about ULONG_MAX being the size argument.
> > > > Since vsnprintf() returns int, it can print at most LONG_MAX
> > > > characters to the buffer. I'd probably just change that argument to
> > LONG_MAX.
> > > >
> > > > I believe the format-truncation flag is a gcc 7 thing.
> > >
> > >   i suspected as much, but i'm curious as to why this error still
> > > exists, and wasn't flagged by regular build testing. i don't just want
> > > to hack the code without hearing from others as to why this issue
> > > exists.
> >
> > To take a wild guess, I would say the yocto version you are using probably
> > upgraded to gcc 7 where this new flag became a default for -Werror. If you try
> > an older branch or just use the recipe for gcc 6, the warning might go away.
> >
> > That said the DNG team at NXP would be the definite authority on this.

  while fixing that hypervisor compile error, here's probably a dumb
question ... what do i need the hypervisor for, anyway? since it's
listed in EXTRA_IMAGEDEPENDS, i can clearly temporarily remove it to
get a build. as i'm new to this target and processor, what's it for?

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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