linux-kernel - Re: net/sunrpc/stats.c:204: undefined reference to `_GLOBAL_OFFSET_TABLE

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Date:   Tue, 4 Oct 2016 09:08:27 -0400 (EDT)
From:   Nicolas Pitre <nicolas.pitre@...aro.org>
To:     Fengguang Wu <fengguang.wu@...el.com>
cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Michal Simek <monstr@...str.eu>
Subject: Re: net/sunrpc/stats.c:204: undefined reference to
 `_GLOBAL_OFFSET_TABLE_'

On Tue, 4 Oct 2016, Fengguang Wu wrote:

> CC Michal. It looks like a microblaze specific error. I'll blacklist
> this old error on microblaze if there are no good solutions.

It doesn't exhibit any build error on my end.  Which is why I suggested 
that you verify the integrity of your toolchain on your end.


> On Fri, Sep 23, 2016 at 05:11:32PM -0400, Nicolas Pitre wrote:
> >On Thu, 22 Sep 2016, kbuild test robot wrote:
> >
> > > Hi Nicolas,
> > >
> > > FYI, the error/warning still remains.
> > >
> > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> > > master
> > > head:   7d1e042314619115153a0f6f06e4552c09a50e13
> > > commit: 461a5e51060c93f5844113f4be9dba513cc92830 do_div(): generic
> > > optimization for constant divisor on 32-bit machines
> > > date:   10 months ago
> > > config: microblaze-mmu_defconfig (attached as .config)
> > > compiler: microblaze-linux-gcc (GCC) 6.2.0
> > > reproduce:
> > >         wget
> > >         https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
> > >         -O ~/bin/make.cross
> > >         chmod +x ~/bin/make.cross
> > >         git checkout 461a5e51060c93f5844113f4be9dba513cc92830
> > >         # save the attached .config to linux build tree
> > >         make.cross ARCH=microblaze
> > >
> > > All errors (new ones prefixed by >>):
> > >
> > >    net/built-in.o: In function `rpc_print_iostats':
> > > > > net/sunrpc/stats.c:204: undefined reference to `_GLOBAL_OFFSET_TABLE_'
> > >    scripts/link-vmlinux.sh: line 52:  5714 Segmentation fault      ${LD}
> > >    ${LDFLAGS} ${LDFLAGS_vmlinux} -o ${2} -T ${lds} ${KBUILD_VMLINUX_INIT}
> > >    --start-group ${KBUILD_VMLINUX_MAIN} --end-group ${1}
> >
> >The problem must be at your end, especially if the toolchain exhibits
> >segmentation faults.
> >
> >Following exactly the instructions above, I get:
> >
> >[...]
> >  LD      vmlinux
> >  SORTEX  vmlinux
> >  SYSMAP  System.map
> >  OBJCOPY arch/microblaze/boot/linux.bin
> >  Building modules, stage 2.
> >  MODPOST 3 modules
> >  CC      crypto/drbg.mod.o
> >  CC      crypto/echainiv.mod.o
> >  CC      crypto/jitterentropy_rng.mod.o
> >  LD [M]  crypto/jitterentropy_rng.ko
> >  LD [M]  crypto/drbg.ko
> >  LD [M]  crypto/echainiv.ko
> >Kernel: arch/microblaze/boot/linux.bin is ready  (#1)
> >
> >
> >Nicolas
>