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Date: Mon, 12 Aug 2013 15:26:24 +0400
From: LRN <lrn1986 AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: redefinition of __fpending
References: <E4C62E40-CEF3-400D-B41D-FF3C3BCA9021 AT Denis-Excoffier DOT org> <20130812100541 DOT GA2691 AT calimero DOT vinschen DOT de>
In-Reply-To: <20130812100541.GA2691@calimero.vinschen.de>
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On 12.08.2013 14:05, Corinna Vinschen wrote:
> On Aug 11 09:20, Denis Excoffier wrote:
>> Hello,
>>
>> I don't really know what is going on, but the new (since 1.7.23) __fpending() declaration
>> in /usr/include/stdio_def.h (line 47) seems to prevent the following to compile (redefinition
>> of __fpending, i'm using GCC-4.8.1):
>> - m4-1.4.16
>> - grep-2.14
>> - findutils-4.5.11
>>
>> These packages use fpending.c from gnulib.
> 
> Big sigh.
> 
> The gnulib-related configure test checks for the declaration of
> __fpending, but the build environment still tries to compile gnulib's
> fpending.c.  But __fpending is defined as inline function in stdio_ext.h
> so the definition in fpending.c clashes with the one in stdio_ext.h.
> 
> That's a bug in the gnulib build environment.  The definition of
> __fpending should be skipped if HAVE_DECL___FPENDING is 1.
> 
> The problem is that this doesn't really help us a lot since all
> packages with integrated gnulib are affected.
> 
> I'm not sure how to fix this yet.
This is fixed in upstream gnulib.

Obviously, that doesn't really help you much - you still need to either
patch packages, or update their copies of gnulib.

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