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Date:	Thu, 17 Dec 2015 21:17:09 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 2.4.0-0.11
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On Dec 17 13:47, Ken Brown wrote:
> Hi Corinna,
>=20
> 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 gener=
ic
> >>>    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 =E2=80=98p=
thread_attr_t=E2=80=99
> >>
> >>/usr/include/cygwin/signal.h:213:3: error: unknown type name =E2=80=98p=
id_t=E2=80=99
> >>
> >>/usr/include/cygwin/signal.h:230:2: error: unknown type name =E2=80=98t=
imer_t=E2=80=99
> >>
> >>/usr/include/sys/signal.h:211:6: error: #error You need the winsup sour=
ces or a cygwin installation to compile the cygwin version of newlib.
> >>
> >>/usr/include/sys/signal.h:214:5: error: unknown type name =E2=80=98pthr=
ead_t=E2=80=99
> >>
> >>/usr/include/sys/time.h:104:34: error: unknown type name =E2=80=98u_int=
=E2=80=99
> >>
> >>[... 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.
>=20
> 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 ema=
cs
> 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.

I'm still puzzled.  The changes, especially to sys/signal.h and
cygwin/signal.h are rather minor.  The really big thing is to move the
macros related to select(2) from sys/types.h, where they never really
belonged to, into sys/select.h, rather than including sys/types.h from
sys/select.h.  Especially the changes to sys/signal.h and cygwin/signal.h
don't really add up to the error messages you encounter.  I inspected
the files today and I really don't see how this could happen :(


Corinna

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

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