我正在使用与os x lion捆绑在一起的默认perl发行版(版本5.12.3).当我在带有-W模块的脚本中使用模块Archive :: Extract时,它会发出以下警告:
Subroutine version::declare redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 139.
Subroutine version::qv redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 140.
Subroutine version::vcmp redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 142.
Subroutine version::stringify redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 145.
Subroutine version::("" redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 146.
Subroutine version::new redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 147.
Subroutine version::parse redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 148.
Subroutine UNIVERSAL::VERSION redefined at /Library/Perl/5.12/darwin-thread-multi-2level/version.pm line 194.
Name "IPC::Cmd::I18N::en::Lexicon" used only once: possible typo at /Library/Perl/Updates/5.12.3/Locale/Maketext.p\
m line 444.
Name "Archive::Extract::I18N::en::Lexicon" used only once: possible typo …