warn "Legacy library @{[(caller(0))[6]]} will be removed from the Perl core distribution in the next major release. Please install it from the CPAN distribution Perl4::CoreLibs. It is being used at @{[(caller)[1]]}, line @{[(caller)[2]]}.\n"; # This legacy library is deprecated and will be removed in a future # release of perl. # # This is a compatibility interface to IPC::Open3. New programs should # do # # use IPC::Open3; # # instead of # # require 'open3.pl'; package main; use IPC::Open3 'open3'; 1