CPAN中是否可以再使用version.pm？

Question

I am trying to find the Perl Module version.pm to fix the error below I am receiving while trying to install module CPAN-Meta-Requirements-2.133 . But I don't see version.pm , the only one I see is Version.PM which is obviously not the one Perl is looking for. Can anyone point to where I can get this version or how I can fix this dependency if version.pm is no longer available?

Perl Version: v5.16.3

OS: GNU/Linux x86_64 x86_64 x86_64

Error:

Can't locate version.pm in @INC (@INC contains:    # Line breaks added
   /root/CPAN-Meta-Requirements-2.133/blib/lib     # for readability
   /root/CPAN-Meta-Requirements-2.133/blib/arch
   /usr/local/lib64/perl5
   /usr/local/share/perl5
   /usr/lib64/perl5/vendor_perl
   /usr/share/perl5/vendor_perl
   /usr/lib64/perl5
   /usr/share/perl5
   .) at (eval 1) line 2.
BEGIN failed--compilation aborted at (eval 1) line 2.
BEGIN failed--compilation aborted at /root/CPAN-Meta-Requirements-2.133/blib/lib/CPAN/Meta/Requirements.pm line 48.
Compilation failed in require at t/accepts.t line 4.
BEGIN failed--compilation aborted at t/accepts.t line 4.
t/accepts.t ............ Dubious, test returned 255 (wstat 65280, 0xff00)
No subtests run

Answer 1

version has come with Perl since Perl 5.10, so it's weird that you would have to install it.

$ corelist version
version was first released with perl v5.9.0

But version is also available on CPAN in its own distribution in order to allow people to upgrade version without upgrading Perl.

So you may indeed install it as any other module.

cpan version

Answer 2

OK, so first: your link is to CPAN/Version.pm . This is very different than version.pm . Directory names and the path relative to Perl's include directory are very important to Perl, and putting a .pm file in the wrong location relative to the include path can break Perl pretty badly.

Second: because of that, never install Perl modules manually . Use cpanm instead:

curl -L https://cpanmin.us | perl - --sudo App::cpanminus # Omit --sudo if your perl isn't installed as root
cpanm version

Third: the version.pm that you want is this one: https://metacpan.org/pod/distribution/version/lib/version.pod , in the JPEACOCK/version-0.9912 distribution.