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Date: Mon, 27 Jun 2016 17:12:02 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: gem broken ?
Message-ID: <20160627151202.GA8096@calimero.vinschen.de>
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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)
> >=20
> > $ cygcheck -c rubygems
> > Cygwin Package Information
> > Package              Version        Status
> > rubygems             2.4.8-1        OK
> >=20
> > $  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
> >=20
> >=20
> > First reported on
> > http://superuser.com/questions/1093954/gem-not-working-in-cygwin
> >=20
> > Regards
> > Marco
>=20
> 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

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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