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Subject:	Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.4.0-0.11
To:	cygwin AT cygwin DOT com
References:	<20151216164848 DOT GM3507 AT calimero DOT vinschen DOT de> <5671EFF8 DOT 6030804 AT cornell DOT edu> <20151217093634 DOT GP3507 AT calimero DOT vinschen DOT de>
From:	Ken Brown <kbrown AT cornell DOT edu>
Message-ID:	<56730350.1080002@cornell.edu>
Date:	Thu, 17 Dec 2015 13:47:44 -0500
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Hi Corinna,

On 12/17/2015 4:36 AM, Corinna Vinschen wrote:
> Hi Ken,
>
> On Dec 16 18:12, Ken Brown wrote:
>> On 12/16/2015 11:48 AM, Corinna Vinschen wrote:
>>> - The header file layout has been cleaned up, mostly in terms of the
>>>     sys/select.h, sys/signal.h and sys/types.h files.  This is a generic
>>>     change in newlib and aligns the affected headers more closely to
>>>     the FreeBSD layout.
>>
>> These changes are leading to lots of errors when building emacs:
>>
>> /usr/include/cygwin/signal.h:178:3: error: unknown type name ‘pthread_attr_t’
>>
>> /usr/include/cygwin/signal.h:213:3: error: unknown type name ‘pid_t’
>>
>> /usr/include/cygwin/signal.h:230:2: error: unknown type name ‘timer_t’
>>
>> /usr/include/sys/signal.h:211:6: error: #error You need the winsup sources or a cygwin installation to compile the cygwin version of newlib.
>>
>> /usr/include/sys/signal.h:214:5: error: unknown type name ‘pthread_t’
>>
>> /usr/include/sys/time.h:104:34: error: unknown type name ‘u_int’
>>
>> [... and many more]
>
> This puzzles me.  It looks like you're missing sys/types.h when
> including sys/signal,h, but sys/signal.h includes sys/types.h by
> itself, prior to including cygwin/signal.h.
>
> How can I reproduce this?  An STC like this:
>
>    #include <signal.h>
>    main () {}
>
> is definitely not sufficient.

Sorry, I hadn't looked at what was happening closely enough before 
sending my mail.  The errors occur while compiling some Gnulib modules 
in the emacs source tree.  It may take me a while to sort this out. 
Maybe Gnulib will have to be patched to take Cygwin's new header layout 
into account.

Ken

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