The issue is that the libraries under that path are compiled for one of your perls, but not the other.

You need to have a separate directory for each perl version, each of which has a version of the libraries you are using. This is what Corion was recommending in 11136089.

A slightly more involved, but well tested and used, way to achieve this is to use local::lib to handle the different directories.

In reply to Re^3: Devel::NYTProf: "undefined symbol: PL_stack_sp" error by swl
in thread Devel::NYTProf: "undefined symbol: PL_stack_sp" error by Special_K

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