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Subject: Re: Advice on setting Cygwin build parameters for OpenSC.
To: cygwin AT cygwin DOT com
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Date: Sun, 2 Sep 2018 11:07:00 +0200
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Am 02.09.2018 um 03:22 schrieb Darren Whobrey:

> The tweak required to get OpenSC to work with the standard Cygwin 
> utils, like ssh-agent, is to comment out a line in the configure.ac 
> script that previously was causing it to force a WND build, which 
> resulted in struct packing of 1 – and that doesn’t work with the ssh 
> utils distributed with Cygwin. For details see the end of thread
> here: https://github.com/OpenSC/OpenSC/issues/607.

That line is flat-out wrong.  Delete it.  You're already in a 
--host=*cygwin* specific section of your configure.ac script, so there's 
no further precautions to be taken.

While at it, you may just as well delete the entire "with_cygwin_native" 
branch (lines 100..105), because that has been un-applicable for years. 
  Building for native windows (i.e. MinGW) is has long since stopped to 
be done by a -mno-cygwin flag.  Instead you would pass the configure 
script a --host={something with mingw in it} flag to initiate a proper 
cross-build, and that will bring you into the existing --host=*mingw* 
case abvoe.


> The question is, what is the most sensible way to update the
> configure.ac and still support other Cygwin users that may be using
> mingw or other toolchains rather than gcc? 

Checking for GCC is almost certainly a red herring here.

> should be to not include the offending line, but then that would
> break WND builds. 

Not really, because whatever you mean by "WND builds", they won't be 
ending up in that cygwin case.

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