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Date: Fri, 15 May 2015 18:33:39 +0900
From: Takashi Yano <takashi.yano@nifty.ne.jp>
To: cygwin@cygwin.com
Subject: Re: cygwin 2.0.2, make 4.1: stderr redirect append does not work with native Windows programs
Message-Id: <20150515183339.c708bd1d310149fe02dc121e@nifty.ne.jp>
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On Tue, 12 May 2015 12:59:01 -0700
Scott McPeak wrote:

> I am attaching a reproducer Makefile.  Run "make 2>&1 | cat" to see
> the incorrect output:
> 
>      $ make 2>&1 | cat
>      echo first > output
>      echo secondxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx >>
> output
>      /cygdrive/c/Windows/System32/sort.exe nonexist 2>> output; true
>      ----- BEGIN output -----
>      nonexistThe system cannot find the file specified.
>      xxxxxxxxxxxxxx
>      ----- END output -----
> 
> The bug happens with both make 4.1 and make 4.0 on cygwin 2.0.2.  It
> does not happen with make 3.82.90 and cygwin 1.7.23.  (And that is
> my only known workaround: downgrade to cygwin 1.7.)

Although I'm not sure why this happens (maybe a bug of make), try

make -O 2>&1 | cat

With option -O, it seems to work as expected.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>

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