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barbie (2653)

barbie
  reversethis-{ku. ... m} {ta} {eibrab}
http://barbie.missbarbell.co.uk/

Leader of Birmingham.pm [pm.org] and a CPAN author [cpan.org]. Co-organised YAPC::Europe in 2006 and the 2009 QA Hackathon, responsible for the YAPC Conference Surveys [yapc-surveys.org] and the QA Hackathon [qa-hackathon.org] websites. Also the current caretaker for the CPAN Testers websites and data stores.

If you really want to find out more, buy me a Guinness ;)

Links:
Memoirs of a Roadie [missbarbell.co.uk]
[pm.org]
CPAN Testers Reports [cpantesters.org]
YAPC Conference Surveys [yapc-surveys.org]
QA Hackathon [qa-hackathon.org]

Journal of barbie (2653)

Wednesday April 11, 2007
06:51 AM

Infuriating Installs

[ #32964 ]

Third party libraries are troublesome at the best of times, but I don't usually have so much trouble as I did yesterday.

As the Google Calendar thing seems to be growing in popularity, I firstly wanted to create a Birmingham.pm version of our own ICS feed. My ultimate aim is to be able to automatically update Google Calendars that I have access to, when I add, amend or delete calendar entries for Birmingham Perl Mongers events.

So I set about installing muttley's Net::Google::Calendar. As I write most my development code on Windows, I started out trying to install it on my XP laptop. It became traumatic simply because of the libxml2 and ssleay libraries. I did manage to get both install evenutally, only to find the ssleay DLL doesn't work on XP.

Next up I tried on a remote Debian server. This time the xmllib2 library caused problems. Even though it was installed and was the latest version from the debian stable repository, XML-LibXML and XML-Atom couldn't find it!

Finally I tried my home Debian box. It seems running apt-get and cpan from the command line just got themselves in knots. I finally used synaptic this morning and installed the dependencies cleanly. Then ran cpan to install Net::Google::Calendar. Finally it worked!

Installation shouldn't be this troublesome. As far as I was aware synaptic is mostly a pretty wrapper around apt-get, so why the command line version kept failing to find libraries I have no idea. Hopefully I can get this installed on the new server we're planning for Birmingham.pm, so I can implement the Google Calendar automatic update features.

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  • You probably needed to install libxml2-dev on the Debian box.
  • just use cpan - using debian perl packages is a recipe for pain.
    --

    @JAPH = qw(Hacker Perl Another Just);
    print reverse @JAPH;
    • Except cpan was having just as many problems! On the one box, after installing libxml2 and rerunning cpan, it failed to locate the library :(

      I don't think this a Perl issue though, it's more the way 3rd party libraries are installed and seem to be a lot more fragile these days.

  • This is why I like OS X. Properly packaged OS X apps include their own copies of libraries in their .app directory. Sure, this means you get duplicated files but really, who cares about duplicating a few 100K libraries these days?