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From:	Achim Gratz <Stromeko AT nexgo DOT de>
To:	cygwin AT cygwin DOT com
Subject:	Re: =?utf-8?Q?=E2=80=98SIG=5FSETMASK=E2=80=99?= and -std=c99
References:	<2adce715-b45b-ed1c-567e-68bc826710ec AT gmail DOT com>
Date:	Sun, 06 Aug 2017 11:44:20 +0200
In-Reply-To:	<2adce715-b45b-ed1c-567e-68bc826710ec@gmail.com> (Marco Atzeri's message of "Sun, 6 Aug 2017 11:04:26 +0200")
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Marco Atzeri writes:
> building again hdf5-1.8.18 on latest cygwin I hit
>
> error: ‘SIG_SETMASK’ undeclared
>
> removing  "-std=c99" from CFLAGS solves the issue.

https://stackoverflow.com/questions/20849917/invalid-signal-processing-library-in-linux

> As before the "-std=c99" was not causing any problem , it is not clear
> to me if the current behavior is correct or a side effect of latest
> cygwin header reshuffle.

The "-std=c*" options are not meant to expose any symbols that are not
defined in the respective C standard.  You almost always want to use
"-std=gnu*" instead if you target POSIX-y systems.


Regards,
Achim.
-- 
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Waldorf MIDI Implementation & additional documentation:
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