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Subject:	Re: New C compilation error using the Openwindow/xview-devel toolkit on current (September 2015) 32 bit Cygwin
References:	<CAB_pihYb0Na6xzMbnBniYFZnpPj2ik=76-dzq5euL3Y01igfQw AT mail DOT gmail DOT com> <560D95A3 DOT 9050403 AT cornell DOT edu>
To:	cygwin AT cygwin DOT com
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Reply-To:	cygwin AT cygwin DOT com
Cc:	psm8888 AT gmail DOT com
Message-ID:	<560FD47B.9090900@dronecode.org.uk>
Date:	Sat, 3 Oct 2015 14:13:31 +0100
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In-Reply-To:	<560D95A3.9050403@cornell.edu>

On 01/10/2015 21:20, Ken Brown wrote:
> On 10/1/2015 2:38 PM, Paul Morgan wrote:
>> I can no longer compile C code linked to the Openwindows/xview-devel
>> toolkit using gcc in Cygwin 32 bits, installed on Windows 7 32 or 64
>> bit systems. I run setup-x86 weekly to update Cygwin - compilation ran
>> fine in August 2015 but by mid September 2015 it was failing on the
>> same code.
>>
>> I can reproduce this by compiling C code from the xview-examples
>> package (from e.g., Debian i386
>> https://packages.debian.org/jessie/xview-examples ), to eliminate any
>> issues with my specific code. For example,
[..]

Thanks for reporting this issue, with reproduction steps and a fix!

I've rebuilt and uploaded updated xview 3.2p1.4-28-2 packages (32-bit 
only, of course), with the additional patch [1] applied.

It's nice to know that someone is actually using the xview packages :)

Please let me know if there are any problems.

[1] 
https://github.com/jon-turney/xview-cygport/blob/master/cygwin-ucontext.patch

>> There now appears to be an issue with the definition of ucontext_t in
>> xview-devel with respect to Cygwin. If I manually edit
>> /usr/openwin/include/xview/base.h and change line 70 from undef to
>> #define SYSV_UCONTEXT
>> ... the example above then compiles fine.
>>
>> I cannot find any reference to recent Cygwin updates related to the
>> definition of ucontext_t
>
> https://cygwin.com/ml/cygwin-announce/2015-08/msg00033.html

Yes, cygwin has only gained ucontext_t this year.


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