On Thursday 28 October 2010 16:04:19 Pau Marc Munoz Torres wrote:
> Hi every body
>
> recently i compiled a svmlight perl module two use svmlight program with
> perl
>
> http://search.cpan.org/~kwilliams/Algorithm-SVMLight-0.09/lib/Algorithm/SVM
> Light.pm
>
> to compile a patch is needed and as i wanted to run it under linux in a 64
> bits machine, i used the flag make " CFLAGS='-fPIC -O3' " after applaying a
> patch
>
> the compilation worked fine, but when ever i try to build an object i get
> get the following error
>
> usr/bin/perl: symbol lookup error:
> /usr/local/lib64/perl5/site_perl/5.10.0/x86_64-linux-thread-multi/auto/Algo
> rithm/SVMLight/SVMLight.so: undefined symbol: set_learning_defaults
>
> I would appreciate is some of you could tell me what does "symbol lookup
> error" and "undefined symbol" means, by the way, set_learning_defaults is
> deffined at the patch
>
OK. I am unable to reproduce this problem. On the other hand I also added -
fPIC to the linker. I was able to get the module to pass its tests eventually,
after manuevering through the various compilation and linking hoops (including
setting LD_LIBRARY_PATH).
Regards,
Shlomi Fish
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