[CentOS] trouble installing Math::BigInt module
Cliff Pratt
enkiduonthenet at gmail.com
Tue Apr 1 23:40:07 UTC 2014
Another approach used by people who want to use CPAN a lot, is to download
and install Perl from source to say /usr/local, and point CPAN at that.
That way you get the benefits of the latest Perl and CPAN without it
fighting with yum/rpm.
Your hashbang line in each Perl script that uses the alternate version of
Perl would have to reflect the location of the alternate version of Perl
and you would have to source any prerequisite Perl modules from CPAN, which
is another chamber of hell.
But it does avoid issues like you are having.
Cheers,
Cliff
On Tue, Apr 1, 2014 at 9:04 PM, Bennett Haselton <bennett at peacefire.org>wrote:
> On 3/31/2014 10:42 PM, Tom Robinson wrote:
> > On 01/04/14 16:19, Bennett Haselton wrote:
> >> On 3/31/2014 7:56 PM, Tom Robinson wrote:
> >>> Can you verify to which packages thefiles belong?
> >>>
> >>> Try using RPM:
> >>>
> >>> rpm -qf /usr/lib/perl5/vendor_perl/5.8.8/Net/IP.pm
> >> On the old machine:
> >> perl-Net-IP-1.25-2.fc6
> >>> and
> >>>
> >>> rpm -qf /usr/lib/perl5/vendor_perl/5.8.8/Crypt/DSA/KeyChain.pm
> >> On the new machine:
> >> perl-Crypt-DSA-1.16-1.el5.rf
> > That should be a good starting point. Your check on installed packages
> as preposed by John shows two
> > very different packaged environments. Did you ever use CPAN on the old
> or new machine?
> Yes, on both. I needed it because I needed to install Crypt::Twofish
> and it didn't seem to be available from the default repositories used by
> yum but it was available from CPAN.
>
> Because there were dozens of sources that I read, plus probably
> thousands of others that I didn't read, saying that installing from CPAN
> was a way to install Perl modules, I figured it was reasonably safe to
> follow those directions, so I went ahead and did it.
>
> Now, later I found out that you can get your machine into an
> inconsistent state by installing things from both CPAN and yum
> repositories, and moreover apparently you can't even properly uninstall
> things that are installed by CPAN:
>
> http://stackoverflow.com/questions/2626449/how-can-i-de-install-a-perl-module-installed-via-cpan
> so by following directions to the letter which are repeated in thousands
> of sources, I apparently put my machine in a state that will cause
> frequent unpredictable conflicts with all the things installed by the
> system package manager, and the damage is irreversible.
>
> Is that about right? :)
>
> At about the same time I learned not to use CPAN, the person helping me
> solve the current problem said that I could make the run-time errors go
> away by going into CPAN and install Math::BigInt -- which led to a new
> error, getting "Math::BigInt: couldn't load specified math lib(s),
> fallback to Math::BigInt::Calc at
> /usr/lib/perl5/vendor_perl/5.8.8/Crypt/DH.pm line 6", so then I
> installed Math::BigInt::Pari through CPAN and it fixed the problem. I
> had to use CPAN because it was the only solution he knew and it was an
> emergency to get that error fixed.
>
> So, going forward, to mitigate the damage, should I just take all the
> packages that are currently only listed as installed on the old machine,
> truncate the version number (so e.g. truncate
> "perl-Compress-Raw-Zlib-2.052-1.el5.rf" to just
> "perl-Compress-Raw-Zlib2") and install that with yum on the command
> line? (Thanks for that list, by the way.)
>
> And more generally, what is the best practice if I want to install a
> module like Crypt::Twofish that was not in the default yum repositories,
> if John and C.L. are saying to avoid CPAN, and both John and Tom are
> saying to avoid adding extra yum repositories? I'd like to use yum just
> for consistency since it automatically handles dependencies and such,
> and at least if I always use yum, then yum will always be "aware" of
> what's installed already (as opposed to things installed from CPAN).
>
> Bennett
>
> > I would work
> > to bring the new machine's perl environment as close to that of the old
> machine's.
> >
> > Indeed, perl-Net-SFTP package is only installed on the new machine!
> >
> > Your package output is reformatted here. Work through this to bring your
> environments as close as
> > possible and check if you have used CPAN to install packages in the past.
> >
> > $ diff -yW80 /tmp/oldlist /tmp/newlist
> > perl-5.8.8-41.el5 perl-5.8.8-41.el5
> > perl-Compress-Raw-Bzip2-2.052-1.el5.r | perl-Class-Loader-2.03-1.2.el5.rf
> > perl-Compress-Raw-Zlib-2.052-1.el5.rf | perl-Compress-Zlib-1.42-1.fc6
> > perl-Convert-ASN1-0.22-1.el5.rf |
> perl-Convert-ASCII-Armour-1.4-1.2.el5
> > perl-Crypt-SSLeay-0.57-3.el5.rf | perl-Convert-ASN1-0.20-1.1
> > perl-DBD-mysql-4.014-1.el5.rf | perl-Convert-PEM-0.07-1.2.el5.rf
> > perl-DBI-1.615-1.el5.rf | perl-Crypt-CBC-2.30-1.el5.rf
> > > perl-Crypt-DES-2.05-3.2.el5.rf
> > > perl-Crypt-DH-0.06-1.2.el5.rf
> > > perl-Crypt-DSA-1.16-1.el5.rf
> > > perl-Crypt-IDEA-1.08-1.el5.rf
> > >
> perl-Crypt-Primes-0.50-1.2.el5.rf
> > > perl-Crypt-RSA-1.99-1.el5.rf
> > >
> perl-Crypt-Random-1.25-1.2.el5.rf
> > > perl-Crypt-Twofish-2.13-1.el5.rf
> > > perl-DBD-MySQL-3.0007-2.el5
> > > perl-DBI-1.52-2.el5
> > > perl-Data-Buffer-0.04-1.2.el5.rf
> > perl-Digest-HMAC-1.01-15 perl-Digest-HMAC-1.01-15
> > > perl-Digest-MD2-2.03-1.2.el5.rf
> > perl-Digest-SHA1-2.11-1.2.1 perl-Digest-SHA1-2.11-1.2.1
> > perl-Email-Date-Format-1.002-1.el5.rf | perl-File-Which-1.09-1.el5.rf
> > perl-Expect-1.21-1.el5.rf | perl-IPC-Run3-0.043-1.el5.rf
> > perl-HTML-Parser-3.68-1.el5.rf | perl-Math-GMP-2.05-1.el5.rf
> > perl-HTML-Tagset-3.20-1.el5.rf |
> perl-Math-Pari-2.01080603-1.el5.rf
> > perl-HTTP-Server-Simple-0.43-1.el5.rf | perl-Net-SFTP-0.10-1.el5.rf
> > perl-IO-Compress-2.030-2.el5.rf | perl-Net-SSH-Perl-1.34-1.el5.rf
> > perl-IO-Socket-SSL-1.01-2.el5 | perl-Probe-Perl-0.01-1.el5.rf
> > perl-IO-Tty-1.08-2.el5.rf | perl-Sort-Versions-1.5-1.2.el5.rf
> > perl-LWP-UserAgent-Determined-1.04-1. | perl-String-CRC32-1.4-2.fc6
> > perl-MIME-Lite-3.029-1.el5.rf | perl-Test-Script-1.05-1.el5.rf
> > perl-Net-DNS-0.59-3.el5 |
> perl-Tie-EncryptedHash-1.24-1.el5.rf
> > perl-Net-Daemon-0.43-1.el5.rf <
> > perl-Net-IP-1.25-2.fc6 <
> > perl-Net-SSLeay-1.36-1.el5.rf <
> > perl-Net-Telnet-3.03-5 <
> > perl-PlRPC-0.2020-1.el5.rf <
> > perl-Sub-Uplevel-0.2002-1.el5.rf <
> > perl-Test-Mock-LWP-0.05-1.el5.rf <
> > perl-Test-MockObject-1.09-1.el5.rf <
> > perl-Test-Warn-0.22-1.el5.rf <
> > perl-Tree-DAG_Node-1.06-1.el5.rf <
> > perl-UNIVERSAL-can-1.16-1.el5.rf <
> > perl-UNIVERSAL-isa-1.03-1.el5.rf <
> > perl-URI-1.35-3 perl-URI-1.35-3
> > perl-WWW-Mechanize-1.72-1.el5.rf <
> > perl-XML-LibXML-1.70-2.el5.rf <
> > perl-XML-NamespaceSupport-1.11-1.el5. <
> > perl-XML-SAX-0.96-1.el5.rf <
> > perl-libwww-perl-5.805-1.1.1 <
> > perl-suidperl-5.8.8-41.el5 perl-suidperl-5.8.8-41.el5
> >
> >
> >
> >
> >
> > _______________________________________________
> > CentOS mailing list
> > CentOS at centos.org
> > http://lists.centos.org/mailman/listinfo/centos
>
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