including .so files

egunnar has asked for the wisdom of the Perl Monks concerning the following question:

hello. i am a perl beginner. i am trying to write a short program to convert ebcdic to normal text. a ebcdic cpan module is already correctly installed on this linux machine( I know because other programs use it). The file /usr/local/lib/perl5/site_perl/5.8.4/i686-linux/Convert/IBM390.pm exists. Is there something extra I have to do to "get" the .so files? here is the error message I get.
Can't load '/usr/local/lib/perl5/site_perl/5.8.4/i686-linux/auto/Convert/IBM390/IBM390.so' for module Convert::IBM390: /usr/local/lib/perl5/site_perl/5.8.4/i686-linux/auto/Convert/IBM390/IBM390.so: undefined symbol: PL_sv_undef at /usr/lib/perl5/5.8.0/i386-linux-thread-multi/DynaLoader.pm line 229. at ./ebcdic_to_ascii.pl line 10 Compilation failed in require at ./ebcdic_to_ascii.pl line 10. BEGIN failed--compilation aborted at ./ebcdic_to_ascii.pl line 10.

#!/usr/bin/perl -w
#require 'mylib.pl';
print "\n\n", "\@INC is :\n";
for (@INC){print "$_\n";}; 
BEGIN{
unshift @INC, "/usr/local/lib/perl5/site_perl/5.8.4/i686-linux";
unshift @INC, "/usr/local/lib/perl5/site_perl/5.8.4/i686-linux/auto";
}
use strict;
use Convert::IBM390 qw();
#use Convert::IBM390 qw(:all);
#my @in =<>;
#print eb2asc(@in);
[download]

thanks,
erik

Comment on including .so files Download Code

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Re: including .so files by Zaxo (Archbishop) on May 20, 2005 at 20:57 UTC
The error looks like an improper installation, but if it works for other people you may just need some different environment magic. Ask somebody there who has it working for them. It may be easier than that. Check `$ perl -MEncode -e'@list = Encode->encodings("EBCDIC"));print "@list $/"'` to see if ebcdic is supported on your platform. It should be. You should then be able to write this with a PerlIO encoding layer, `binmode $inhandle, ':encoding(EBCDIC)'; while (<$inhandle>) { print $outhandle $_; }` [download] which uses only parts from the perl distribution. Untested, no ebcdic here. After Compline, Zaxo	[reply] [d/l] [select]
Re: including .so files by VSarkiss (Monsignor) on May 20, 2005 at 21:40 UTC
It may be an installation problem. Either somebody's copied object files compiled for Perl 5.8.0 into a directory intended for 5.8.4, or you're using the wrong directory. Read the message carefully and you'll note that the .so file in ...site_perl/5.8.4/i686... is being called from DynaLoader in ...perl5/5.8.0/i386... What version is the Perl you're running? (Type `perl -v` to find out.) You should be using libraries of a matching version. Do not rebuke them with harsh words ... but rather lead them gently - with URLs - so that they may learn wisdom.	[reply] [d/l]
Re: including .so files by zentara (Cardinal) on May 21, 2005 at 11:26 UTC
Try changing your shebang line to #!/usr/local/bin/perl from #!/usr/bin/perl I'm not really a human, but I play one on earth. flash japh	[reply]