Re: Question 1: I understand that the different perl versions are incompatible. But then why does doing PERL5LIB='/Users/derek/local/lib/perl5' pnmquant 256 img.pnm segfault (well, I know why, because that PERL5LIB is for 5.14 and pnmquant uses /usr/bin/perl v5.10) but PERL_DL_NONLAZY=1 PERL5LIB='/Users/derek/local/lib/perl5' pnmquant 256 img.pnm produces the correct result without segfaulting? Seems like PERL_DL_NONLAZY is doing something, but I don't understand what, apparently.
The Netpbm scripts (clarification, just in case: Netpbm is not a Perl module) have /usr/bin/perl hard-coded in their #!, so I don't think changing their install location will affect things.
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