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From: Brian Clifton <brian AT clifton DOT me>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Re: gem broken ?
Date: Mon, 27 Jun 2016 16:18:39 +0000
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>From: cygwin-owner AT cygwin DOT com <cygwin-owner AT cygwin DOT com> on behalf of Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
>Sent: Monday, June 27, 2016 8:12 AM
>To: cygwin AT cygwin DOT com
>Subject: Re: gem broken ?
>
>On Jun 27 15:53, Marco Atzeri wrote:
>> On 27/06/2016 15:19, Marco Atzeri wrote:
>> > on both 32bit and 64 bit (W7 X86_64)
>> >
>> > $ cygcheck -c rubygems
>> > Cygwin Package Information
>> > Package              Version        Status
>> > rubygems             2.4.8-1        OK
>> >
>> > $  gem list
>> > ERROR:  Loading command: list (Fiddle::DLError)
>> >         can't load kernel32
>> > ERROR:  While executing gem ... (NoMethodError)
>> >     undefined method `invoke_with_build_args' for nil:NilClass
>> >
>> >
>> > First reported on
>> > http://superuser.com/questions/1093954/gem-not-working-in-cygwin
>> >
>> > Regards
>> > Marco
>>
>> it seems a consequence of cygwin 2.5.2
>
>Commit 8a31aa3 introduces the problem.  The patch disallows to dlopen
>libs without specifying the file extension.  This was originally intended
>by commit df958670 but only worked for paths, not simple filenames.
>
>AFAICS this is a more a ruby problem than a Cygwin problem.  It tries to
>dlopen a DLL called "kernel32".  But dlopen is POSIX, so it should not
>assume that an extension is added automatically, just as this isn't done
>on Linux.
>
>Hmm, I'm undecided if this should be fixed in ruby or if we need a
>Cygwin 2.5.3 reverting this patch...
>
>
>Corinna

I ran into this too on Saturday night- I ended up opening the Fiddle file in question and putting the full path (including the extension) to fix the issue. Wish I would have tried with just the extension

The weird thing is- after upgrading, I tried reverting ruby and ruby-gems to older versions but had no luck. Corinna, where did a change occur that caused this to happen? You mention dlopen, which package is this a part of?

Thanks
Brian
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