From:	lhall AT rfk DOT com (Larry Hall)
Subject:	Re: I: gcc ... -U_WIN32 ... may cause problems
29 Aug 1998 17:01:26 -0700 :
Message-ID:	<3.0.5.32.19980829153412.009f92e0.cygnus.gnu-win32@pop.ma.ultranet.com>
References:	<19980829133256 DOT 3242 DOT rocketmail AT send103 DOT yahoomail DOT com>
Mime-Version:	1.0
To:	earnie_boyd AT yahoo DOT com, MCzapski AT openplus DOT com DOT au,
	Michael Weiser <michael AT weiser DOT saale-net DOT de>
Cc:	gnu-win32 AT cygnus DOT com

At 06:32 AM 8/29/98 -0700, Earnie Boyd wrote:
>
>---Michael Weiser <michael AT weiser DOT saale-net DOT de> wrote:
>>
>> Hello Michael, you wrote:
>> >Cygwin32 but unix-specific daemon code is compiled instead, for
>example.  To 
>> >avoid coding #if defined construct as shown I decided to undefine
>_WIN32 when 
>> >compiling in Cygwin32 environment by using a command line of a form
>"gcc ... 
>> >-U_WIN32 ...".  Before I did that the application worked fine
>however as soon 
>> Wouldn't it be cleaner and easier to code something like
>> 
>> #if defined __unix__ || defined __CYGWIN32__
>> ...
>> #endif
>> 
>> and
>> 
>> #if defined _WIN32 && !defined __CYGWIN32__
>> ...
>> #endif
>> 
>> around parts of your program that should behave like on unix under
>> cygwin? IMHO that wouldn't be more effort than solving your current
>> problem and all the others that will arise if something in the headers
>> or the cygwin tools gets changed.
>
>Since we are giving humble opinions here is mine:
>
>Leave the _WIN32 and WINNT for MS' use and get rid of them from the
>specs altogether.  I've had to be cautious about this before and
>_WIN32 being defined for CYGWIN32 and even MINGW32 definitely gets in
>the way on occasion.
>
>


I second this opinion.  According to MS docs, _WIN32 is an MS specific
variable.  If Cygnus is going to start using it, then it just complicates
the cases where someone wants to recognize the difference between the
MS and non-MS environments.


Larry Hall                              lhall AT rfk DOT com
RFK Partners, Inc.                      (781) 239-1053
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Wellesley, MA  02482-7797               http://www.rfk.com
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