Michiel Beijen schrieb am 19.09.2012 um 07:20 (+0200):
> 
> I'm using the all-new 5.16.1 ActiveState perl with 64-bit dmake.
> However if I try to install a module via the cpan client I see an
> error like below, would anyone have any advice?

>   CPAN.pm: Building D/DP/DPARIS/Crypt-IDEA-1.08.tar.gz
> 
> Set up gcc environment - gcc.exe (rubenvb-4.5.4) 4.5.4
> Checking if your kit is complete...
> Looks good
> JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
>  at C:/Perl64/lib/CPAN/Meta/Converter.pm line 23.
>  at C:/Perl64/lib/ExtUtils/MM_Any.pm line 877.
> JSON 2.5 is required for $ENV{PERL_JSON_BACKEND} = 'JSON::XS'
>  at C:/Perl64/lib/CPAN/Meta/Converter.pm line 23.

That's a missing dependency. Does the 64 bit distribution ship with
the JSON module?

Works fine for me on ActiveState 5.16.1 32 bit, which does ship with
JSON:

  ppm install mingw
  cpan Crypt::IDEA
  perl -MCrypt::IDEA -e1

-- 
Michael Ludwig
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