[Buildroot] [Fwd: Re: Struggling with undefined reference to `__fgetc_unlocked']

Thiago A. Corrêa thiago.correa at gmail.com
Thu Aug 23 16:53:49 UTC 2007


That file actually calls fgetc, so I guess it's a dreadfull define :P

I suppose it is using uClibc headers instead of the native compiler ones.

On 8/23/07, Carmelo AMOROSO <carmelo.amoroso at st.com> wrote:
> my reply below
>
> -------- Original Message --------
> Subject:        Re: [Buildroot] Struggling with undefined reference to
> `__fgetc_unlocked'
> Date:   Thu, 23 Aug 2007 18:42:31 +0200
> From:   Carmelo Amoroso <carmelo.amoroso at st.com>
> Organization:   STMicroelectronics
> To:     "Thiago A. Corrêa" <thiago.correa at gmail.com>
> References:
> <d6cda7730708230925x19bc0901v9a6dd1f18ee325ec at mail.gmail.com>
> <46CDB759.709 at st.com>
> <d6cda7730708230939p7b126fe1mbe28768aa4413bb4 at mail.gmail.com>
>
>
>
> Thiago A. Corrêa wrote:
> > Hi Carmelo,
> >
> >    That command returned
> > gentoo-vm buildroot # readelf -s /lib/libc.so.6 | grep fgetc_unlocked
> >   1868: 0005e040    40 FUNC    WEAK   DEFAULT   11 fgetc_unlocked@@GLIBC_2.1
> > gentoo-vm buildroot #
> >
> >    I'm guessing the prepended underscores are due to mangling, but
> > could be wrong.
> >
> Not, they are part of the symbol's name... you need to fix qtopia to
> call the fgetc_unlocked.
>
> Cheers
> > On 8/23/07, Carmelo AMOROSO <carmelo.amoroso at st.com> wrote:
> >
> >> Thiago A. Corrêa wrote:
> >>
> >>> Hi,
> >>>
> >>>    I'm struggling with qtopia. During the link of rcc (which is a host
> >>> tool, natively compiled) I get:
> >>>
> >>> I googled for the error, but could only find ppl complaining about
> >>> this when linking against uClibc, when this should be linking against
> >>> the system glibc. Does anyone has an idea of what I could try?
> >>>
> >>> Regards,
> >>>     Thiago A. Correa
> >>>
> >>>
> >> Which glibc version have you installed on your host?
> >> For example, on my RHEL 3 there is glibc-2.3.4 which doesn't contain the
> >> __fgetc_unlocked
> >> symbol, while fgetc_unlocked (no underscore prepending)...
> >> so just check your glibc by running 'readelf -s /lib/libc.so.6 | grep
> >> fgetc_unlocked'
> >> and see what it returns.
> >>
> >> Regards,
> >> Carmelo
> >>
> >>
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> >>>
> >>>
> >>>
> >>
>
>
>
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