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From:	Fabrice Niessen <fni-news AT pirilampo DOT org>
To:	Eli Zaretskii <eliz AT gnu DOT org>
Cc:	18752 AT debbugs DOT gnu DOT org, cygwin AT cygwin DOT com, dmoncayo AT gmail DOT com
Subject:	Re: bug#18752: 24.3.94; Why is Cygwin Emacs 2x quicker than Windows Emacs?
References:	<86h9z2rb42 DOT fsf AT example DOT com> <83siim1z6h DOT fsf AT gnu DOT org> <86iojimmjg DOT fsf AT example DOT com> <83wq7ydjc7 DOT fsf AT gnu DOT org>
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Date:	Sat, 18 Oct 2014 08:51:12 +0200
In-Reply-To:	<83wq7ydjc7.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 18 Oct 2014 08:42:48 +0300")
Message-ID:	<86zjctlvkv.fsf@example.com>
User-Agent:	Gnus/5.13 (Gnus v5.13) Emacs/24.3.94 (windows-nt)
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Eli Zaretskii wrote:
> Fabrice Niessen wrote:
>> 
>>> You also forgot to tell what compiler options were used for each
>>> build.  E.g., if the Cygwin build is optimized, whereas the MinGW
>>> build is not, the twofold speedup is expected (I generally see
>>> a factor of 2.5 between an optimized and unoptimized build).
>> 
>> I have no idea how Cygwin Emacs gets compiled, nor Windows Emacs
>> (done by Dani). Putting them in Cc.
>
> As Ken points out, the variable system-configuration-options is the
> way to tell.

On my Windows Emacs:

"--enable-checking 'CFLAGS=-O0 -g3' CPPFLAGS=-DGLYPH_DEBUG=1"

> Given that the Cygwin build is optimized, it suffices to show that the
> MinGW one isn't, to explain the difference in speed.

Dani, can you build an optimized version as well next time?

Thanks!

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