Ah, LD_LIBRARY_PATH is a "special" variable. Setting it once your program has started (even in a BEGIN block) is usually too late.

Some previous discussion on this, with a particularly illuminating reply from good brother tye, can be found at programatically setting the LD_LIBRARY_PATH. Searching for LD_LIBRARY_PATH will lead you to the others.

In reply to Re (3): Setting env vars in current process by VSarkiss
in thread Setting env vars in current process by ruscoekm

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