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Franek

Member

Registered: 2010-05-16

Posts: 100

[solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

(This appears to be the most suited subforum for the following matter. Please excuse and correct me if I am wrong.)

As there is no AUR package for the CPAN module Image::Magick, which I need, I am trying to install it with cpanplus and cpanplus-dist-arch (and yes, I ran setupdistarch). Unsuccessfully, though:

 $  sudo cpanp i Image::Magick
Installing Image::Magick (6.72)
Running [/usr/bin/perl /usr/bin/core_perl/cpanp-run-perl /root/.cpanplus/5.14.2/build/PerlMagick-6.72/Makefile.PL INSTALLDIRS=site]...
Writing Makefile for Image::Magick
Writing MYMETA.yml and MYMETA.json
[MSG] Module 'Image::Magick' depends on 'ExtUtils::MakeMaker', may need to build a 'CPANPLUS::Dist::Arch' package for it as well
[ERROR] Use of uninitialized value $pkgver in substitution (s///) at /usr/share/perl5/vendor_perl/CPANPLUS/Dist/Arch.pm line 1591.

So cpanp complains about ExtUtils::MakeMaker not being installed, which is wrong:

 $  pacman -Qs makemaker
local/perl 5.14.2-2 (base)
    A highly capable, feature-rich programming language
local/perl-extutils-makemaker 6.59-1
    Create a module Makefile

Re-installing ExtUtils-MakeMaker with cpanp does not help. Any ideas what could be wrong and how to fix it? (Also I am open to suggestions for other means of installing CPAN modules.)

EDIT:
Just retried with latest git version of cpanplus-dist-arch. No change.

Last edited by Franek (2011-10-23 21:16:06)

juster

Forum Fellow

Registered: 2008-10-07

Posts: 195

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

Long story short is that Image::Magick is bundled with ImageMagick! Install the imagemagick package and you should be just fine. The PerlMagick distribution which contains the Image::Magick module on CPAN is simply a copy of what comes with ImageMagick.

The warning about ExtUtils::MakeMaker is just something that cpanp does for every dependency of a module that you build. It is very annoying and other than convincing the CPANPLUS maintainer to remove it, there is nothing I can do about it. But it is a warning and not an error. I've just gotten used to it I suppose.

The error about an uninitialized value which stops things for you is a bug. I'll try to figure out why it happens and fix it. Thanks for reporting it. I am having a tough time reproducing it, though. Which version of pacman are you using?

Franek

Member

Registered: 2010-05-16

Posts: 100

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

Thank you, that clears things up a bit. The MakeMaker warning is indeed confusing; I will try to keep in mind that it is not of any significance. Now, as the imagemagick package is installed on my system, I just have to figure out why ikiwiki does not find it. . . but that is a different issue.

Concerning the bug: Im using pacman 3.5.4-4 . Please let me now if you need any more information.

juster

Forum Fellow

Registered: 2008-10-07

Posts: 195

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

Ok the pacman version was just a stab in the dark. I think the problem was that I extract information from pacman's output to try to guess C-library dependencies. I foolishly did not force the locale to English when running pacman behind the scenes. This is silly because the regexp is for the english text... Do you use a non-english locale to print non-english messages from pacman?

Franek

Member

Registered: 2010-05-16

Posts: 100

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

Yes, that seems to be it. I am using a german Locale, and the cpanp malfunction does not occur when I change LC_ALL to english:

$  LC_ALL="en_US" cpanp i Image::Magick
Installing Image::Magick (6.72)
Running [/usr/bin/perl /usr/bin/core_perl/cpanp-run-perl /home/carlos/.cpanplus/5.14.2/build/PerlMagick-6.72/Makefile.PL INSTALLDIRS=site]...
Writing Makefile for Image::Magick
Writing MYMETA.yml and MYMETA.json
[MSG] Module 'Image::Magick' depends on 'ExtUtils::MakeMaker', may need to build a 'CPANPLUS::Dist::Arch' package for it as well
==> Making package: perl-perlmagick 6.72-1 (Mon Oct 24 09:24:19 CEST 2011)
.
.
.

juster

Forum Fellow

Registered: 2008-10-07

Posts: 195

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

This should be fixed in the next version of CPANPLUS::Dist::Arch (aka perl-cpanplus-dist-arch). Version 1.19 was just uploaded to the CPAN I will release a new package tomorrow. The new version should be replicated across the CPAN mirrors by then.

Thanks for reporting this and emailing me about this forum post.

Franek

Member

Registered: 2010-05-16

Posts: 100

Re: [solved] cpanp wrongly complains about missing ExtUtils::MakeMaker

It is indeed fixed at least in the git version now, however there the [community] package has not been updated yet. Thanks anyway!