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Date: Thu, 17 Dec 2020 02:12:55 +0900 (JST)
Message-Id: <20201217.021255.1122192410492034948.yasu@utahime.org>
To: cygwin AT cygwin DOT com
Subject: Re: bash-4.4.12-3: Building package with gcc-10.2 fails due to
 duplicate symbols
From: Yasuhiro KIMURA <yasu AT utahime DOT org>
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From: Mattl Mario <Mario DOT Mattl AT ssi-schaefer DOT com>
Subject: bash-4.4.12-3: Building package with gcc-10.2 fails due to duplicate symbols
Date: Wed, 16 Dec 2020 16:58:25 +0000

> With the GCC-10.2 Compiler package it's not possible to build the bash-src package anymore.
> 
> I firstly recognized the same issue with a bash-4.3 package, which we are currently using in our toolchain.
> So I decided to try building the Cygwin bash-src package (of course using the common cygport mechanism for applying all patches)

In GCC 10 default is changed from -fcommon to -fno-common. And your
build error is typical case caused by this change.

You can work around it by using -fcommon.

---
Yasuhiro KIMURA
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