perl - Why does perl2exe complain about "Unresolved symbol: Perl_Gthr_key_ptr"? -

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in perl, error mean? 

 unresolved symbol: perl_gthr_key_ptr

i getting error while converting perl file binary using perl2exe on hp-ux pa-risc machine.

/usr/lib/dld.sl: unresolved symbol: perl_gthr_key_ptr (code)  /tmp/p2xtmp-9979/cwd.sl iot trap (core dumped)

off top of head looks non-threaded perl trying load modules compiled threaded perl.

edit: clarify, can compile perl support threads (threaded perl) or without support threads (non-threaded perl). if module built used threads , loaded perl without support threads produces above error.

to check thread support in perl, search "thread" string in output of perl -v:

perl -v | grep thread

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