AFAIK, you have a couple of options, only one of which does what you really ask:

• recompile perl
  • sub-option: compile a private version of Perl that has the appropriate default @INC and use that version
• set PERL5LIB so it includes the directories you want to add
(see perldoc perlrun for more on this)

hth.

perl -e 'print "How sweet does a rose smell? "; chomp ($n = <STDIN>); 
+$rose = "smells sweet to degree $n"; *other_name = *rose; print "$oth
+er_name\n"'
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The best way AFAICT is to use the environment variable PERL5LIB. So setting the environment variable PERL5LIB to, say, /foo/bar:/bar/foo before invoking perl will add /foo/bar and /bar/foo to @INC. If you want this to occur more than in your shell, you'll need to specify what sort of OS you're running.

Another, less good way is to do an alias perl='perl -I/foo/bar -I/bar/foo' (or its equivalent, if you're not running bash); IMHO this is less correct however.

HTH...

REGEDIT4

[HKEY_LOCAL_MACHINE\SOFTWARE\Perl]
@="C:\\Perl"
"bindir"="C:\\Perl\\bin"
"lib"="c:\\perl\\site\\mylib"
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