Link errors

Link errors

[martin.nichols]

Hi All,

I'm new to MIPs architecture and Linux so apologies in advance!

I'm trying to build an application to run on the Au1100.
I have a crosscompiler setup (gcc 3.2) and can build a 'hello world' that
runs on the target.
When I try building a more serious application using Kdevelop - with the
appropriate settings
for the crosstools - I get lots of errors like this:
assert.o(.text+0x1cc): relocation truncated to fit: R_MIPS_GOT16
__assert_program_name
/opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unknown
-linux-gnu/lib/libc.a(dcigettext.o): In function `_nl_find_msg':
dcigettext.o(.text+0x153c): relocation truncated to fit: R_MIPS_CALL16
_nl_load_domain
/opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unknown
-linux-gnu/lib/libc.a(finddomain.o): In function `_nl_find_domain':

Could someone tell me what I'm doing wrong please.

Thanks,

Martin.

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Re: Link errors

[David Daney]

martin.nichols@oxinst.co.uk wrote:
> Hi All,
> 
> I'm new to MIPs architecture and Linux so apologies in advance!
> 
> I'm trying to build an application to run on the Au1100.
> I have a crosscompiler setup (gcc 3.2) and can build a 'hello world' that
> runs on the target.
> When I try building a more serious application using Kdevelop - with the
> appropriate settings
> for the crosstools - I get lots of errors like this:
> assert.o(.text+0x1cc): relocation truncated to fit: R_MIPS_GOT16
> __assert_program_name
> /opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unknown
> -linux-gnu/lib/libc.a(dcigettext.o): In function `_nl_find_msg':
> dcigettext.o(.text+0x153c): relocation truncated to fit: R_MIPS_CALL16
> _nl_load_domain
> /opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unknown
> -linux-gnu/lib/libc.a(finddomain.o): In function `_nl_find_domain':
> 
> Could someone tell me what I'm doing wrong please.
> 
This is the got overflow problem.

Later versions of binutils have multi-got support (2.15 for example),
which under most circumstances will fix the problem.

If you have extreamly large compilation units you might have to use a
32bit got index.  In GCC3.4 and later this is done with the -mxgot
option.  With eariler versions of GCC you have to pass -xgot to the
assembler (-Wa,-xgot IIRC).

David Daney.

RE: Link errors

[martin.nichols]

David,

Many thanks.
I should have Googled first ;)

Best regards,

Martin Nichols.

> -----Original Message-----
> From:	David Daney [SMTP:ddaney@avtrex.com]
> Sent:	19 July 2004 17:44
> To:	martin.nichols@oxinst.co.uk
> Cc:	linux-mips@linux-mips.org
> Subject:	Re: Link errors
> 
> martin.nichols@oxinst.co.uk wrote:
> > Hi All,
> > 
> > I'm new to MIPs architecture and Linux so apologies in advance!
> > 
> > I'm trying to build an application to run on the Au1100.
> > I have a crosscompiler setup (gcc 3.2) and can build a 'hello world'
> that
> > runs on the target.
> > When I try building a more serious application using Kdevelop - with the
> > appropriate settings
> > for the crosstools - I get lots of errors like this:
> > assert.o(.text+0x1cc): relocation truncated to fit: R_MIPS_GOT16
> > __assert_program_name
> >
> /opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unkno
> wn
> > -linux-gnu/lib/libc.a(dcigettext.o): In function `_nl_find_msg':
> > dcigettext.o(.text+0x153c): relocation truncated to fit: R_MIPS_CALL16
> > _nl_load_domain
> >
> /opt/crosstool/mipsel-unknown-linux-gnu/gcc-3.2.3-glibc-2.2.3/mipsel-unkno
> wn
> > -linux-gnu/lib/libc.a(finddomain.o): In function `_nl_find_domain':
> > 
> > Could someone tell me what I'm doing wrong please.
> > 
> This is the got overflow problem.
> 
> Later versions of binutils have multi-got support (2.15 for example),
> which under most circumstances will fix the problem.
> 
> If you have extreamly large compilation units you might have to use a
> 32bit got index.  In GCC3.4 and later this is done with the -mxgot
> option.  With eariler versions of GCC you have to pass -xgot to the
> assembler (-Wa,-xgot IIRC).
> 
> David Daney.
> 
> 
> +++ Virus-scanned by Messagelabs for Oxford Instruments +++
> 
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