undefined symbol: PL_thr

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

I'm trying to upgrade my system to Perl 5.16. I'm having trouble as indicated. So far, based on some Google searches, I've concluded the problem does not seem specific to XML::Parser::Expat. Otherwise, there doesn't seem to be a definitive solution posted anywhere. Does anybody know where this symbol originates?

#     Error:  Can't load '/home/jim/perl5/lib/perl5/i686-linux-gnu-thr
+ead-multi-64int/auto/XML/Parser/Expat/Expat.so' for module XML::Parse
+r::Expat: /home/jim/perl5/lib/perl5/i686-linux-gnu-thread-multi-64int
+/auto/XML/Parser/Expat/Expat.so: undefined symbol: PL_thr_key at /usr
+/local/lib/perl5/5.16.2/i686-linux/DynaLoader.pm line 190.
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Thanks!

Comment on undefined symbol: PL_thr_key Download Code

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Re: undefined symbol: PL_thr_key by tqisjim (Beadle) on Dec 14, 2012 at 19:09 UTC
Please disregard this question. Apparently, using my package manager to uninstall the previous version of perl was not as effective as a brute force 'rm -f'.	[reply]
Re^2: undefined symbol: PL_thr_key by Anonymous Monk on Dec 17, 2012 at 09:50 UTC
I'll not disregard your question, for the sake of future readers. The error comes from a module compiled against threaded Perl while your Perl installation is not threaded (probably because you recompiled it). The solution is to recompile the module against the new Perl. (I had a few such problems when toggling the threads flag on Gentoo.)	[reply]
Re^3: undefined symbol: PL_thr_key by Anonymous Monk on Jan 02, 2013 at 21:26 UTC
Thank you so much for not disregarding the quesion... I had recompiled Perl without threading and couldn't figure out what the problem was until I read your response! Thanks again!	[reply]
Re^3: undefined symbol: PL_thr_key by Anonymous Monk on Jan 30, 2017 at 18:17 UTC
And perl-cleaner --reallyall should clear it up	[reply]