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Message-ID: <3D325399.6090506@ece.gatech.edu>
Date: Mon, 15 Jul 2002 00:46:17 -0400
From: Charles Wilson <cwilson AT ece DOT gatech DOT edu>
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CC: cygwin AT cygwin DOT com
Subject: Re: Available for test: gcc-3.1.1-2 gcc2-2.95.3-8
References: <20020711044304 DOT GA3292 AT redhat DOT com> <3D2D3205 DOT 7080606 AT ece DOT gatech DOT edu>
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Question about threading models for -mno-cygwin:

Since the cygwin compiler is built using --enable-threads=posix, how 
does that affect the compiler in -mno-cygwin mode, and the mingw version 
of the stdc++ library in /usr/lib/mingw ?  I would assume that the 
"normal" mingw compiler uses --enable-threads=win32.  Does that mean 
that code (libraries) built using MINGW's g++ aren't usable by cygwin's 
g++ in -mno-cygwin mode (and vice versa)?

Also, I've seen repeated references that "mingw's compiler will be built 
with dwarf2 exceptions".  I assume that there are only two versions of 
EH code: dwarf2 and sjlj -- and you only get sjlj if you use 
--enable-sjlj-exceptions or somesuch?  (If so, then the "regular" mingw 
build -- which is claimed to be use dwarf2 EH, and the cygiwn build will 
both have dwarf2 EH, since mknetrel/extra/gcc *doesn't* say 
--enable-sjlj...)  Which is good.  If I'm right.

--Chuck


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