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

Carmelo AMOROSO carmelo.amoroso at st.com
Thu Aug 23 16:43:11 UTC 2007


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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