From:	khan AT xraylith DOT wisc DOT edu (Mumit Khan)
Subject:	Re: linking confusion
13 May 1998 02:52:55 -0700 :
Message-ID:	<9805121516.AA04931.cygnus.gnu-win32@modi.xraylith.wisc.edu>
References:	<Pine DOT GSO DOT 3 DOT 96 DOT 980511232708 DOT 17936A-100000 AT coke>
To:	"Jenny Gable (Skywind)" <jgable AT imsa DOT edu>
Cc:	Cygnus GNU Win32 Mailing List <gnu-win32 AT cygnus DOT com>

"Jenny Gable (Skywind)" <jgable AT imsa DOT edu> writes:
> I'm having trouble with linking (first program, using example code), and
> found in the docs,
> 
> "The regular setup allows you to use the option -mwindows on the command
> line to include a set of the basic libraries (and also make your program
> a GUI program instead of a console program), including user32, gdi32
> and, IIRC, comdlg32."
> 
> So says the documentation, but gcc and ld both complain that -mwindows
> isn't a valid option.  So what command line is this talking about?  
> 

There is some inconsistency in the handling of -mwindows by gcc. It allows
it *only* for the link step, and not for the compile step (I'm going to
submit a patch to make it accept in both cases). Here's an example:
   
 OK:

   % gcc -c foo.c
   % gcc -mwindows -o foo foo.o
 
 Not OK:

   % gcc -mwindows -o foo.c

ld doesn't understand -mwindows. It's just a shortcut for GCC that passes
the '--subsystem windows' option to ld as well as supplies some extra
libraries needed for usual GUI "-luser32 -lgdi32 -lcomdlg32".

Regards,
Mumit
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