Yes, its a feature

http://perl5.git.perl.org/perl.git/blob?f=Configure

case "$userelocatableinc" in
$define|true|[yY]*)    dflt='y' ;;
*)            dflt='n' ;;
esac
cat <<EOM

Would you like to build Perl so that the installation is relocatable, 
+so that
library paths in @INC are determined relative to the path of the perl 
+binary?
This is not advised for system Perl installs, or if you need to run se
+tid
scripts or scripts under taint mode.
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