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problem using swig to create perl module GIJoe 10-06-2005
Posted by GIJoe on October 6, 2005, 8:10 am
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I just downloaded swig and installed it on a solaris machine. I tried
to run one of the examples and got this error message

Can't load './example.so' for module example: ld.so.1: perl: fatal:
relocation error: file ./example.so: symbol _ZdlPv: referenced symbol
not found at
/tps/global/depot/perl-5.8.5/lib/5.8.5/sun4-solaris/DynaLoader.pm line
230.
at example.pm line 7
Compilation failed in require at runme.pl line 7.
BEGIN failed--compilation aborted at runme.pl line 7.

Any ideas how to solve this. Thanks in advance.

Joe



Posted by Sisyphus on October 7, 2005, 5:06 pm
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> I just downloaded swig and installed it on a solaris machine. I tried
> to run one of the examples and got this error message
>
> Can't load './example.so' for module example: ld.so.1: perl: fatal:
> relocation error: file ./example.so: symbol _ZdlPv: referenced symbol
> not found at
> /tps/global/depot/perl-5.8.5/lib/5.8.5/sun4-solaris/DynaLoader.pm line
> 230.
> at example.pm line 7
> Compilation failed in require at runme.pl line 7.
> BEGIN failed--compilation aborted at runme.pl line 7.
>
> Any ideas how to solve this. Thanks in advance.


We don't see many swig questions here - and I get the impression that it's
not used much by perl folks, these days. Most of us take the more usual XS
approach, or use inline::C - which would be *my* recommendation on how to
solve the problem.

If you specifically want to use swig then perhaps your best bet is with the
swig mailing lists:
http://www.swig.org/mail.html

There could, of course, be someone lurking about here who *does* have the
knowledge to help you .... so stay tuned, just in case.

Cheers,
Rob




Posted by GIJoe on October 7, 2005, 7:16 am
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Thanks, Rob. I'll give that site a try. Swig is one of the approaches
recommended by the book Advanced Perl Programming. The example given
makes it look very straight forward. I guess it's never easy as it
seems. I do have another question, does XS work with C++ code? The book
says it doesn't, but maybe it is outdated.

Joe



Posted by Tassilo v. Parseval on October 7, 2005, 7:58 pm
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Also sprach GIJoe:

> Thanks, Rob. I'll give that site a try. Swig is one of the approaches
> recommended by the book Advanced Perl Programming. The example given
> makes it look very straight forward. I guess it's never easy as it
> seems. I do have another question, does XS work with C++ code? The book
> says it doesn't, but maybe it is outdated.

XS works very well with C++ and provides some convenient ways to map
C++-methods to Perl-methods. See 'perldoc perlxs', "Using XS With C++".

Tassilo
--
use bigint;
$n=71423350343770280161397026330337371139054411854220053437565440;
$m=-8,;;$_=$n&(0xff)<<$m,,$_>>=$m,,print+chr,,while(($m+=8)<=200);


Posted by Sisyphus on October 8, 2005, 8:42 am
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> > I do have another question, does XS work with C++ code? The book
> > says it doesn't, but maybe it is outdated.
>
> XS works very well with C++ and provides some convenient ways to map
> C++-methods to Perl-methods. See 'perldoc perlxs', "Using XS With C++".
>

There's Inline::CPP as well, which op might also find useful.

Cheers,
Rob




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