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From: drupp@cs.washington.edu (Douglas Rupp)
Subject: Re: GNAT & Windows NT
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References: <3h3j4e$9kn@news.cais.com> <3h6o5j$ge8@gnat.cs.nyu.edu>
 <3h72or$p1g@ixnews2.ix.netcom.com>
Date: Wed, 8 Feb 1995 07:47:15 GMT
Date: 1995-02-08T07:47:15+00:00
List-Id: <comp.lang.ada>

In article <3h72or$p1g@ixnews2.ix.netcom.com> halloran@ix.netcom.com (Timothy Halloran) writes:
>
>Maybe someone (GNAT developers anyone?, anyone?) could comment on the
>differences between GNAT and gcc between DOS and NT.  I know that
>Windows 3.1 uses the "new executable file" format for programs rather
>than what is used in DOS (I don't know what Win32 programs use).  I
>also suspect that GNAT under dos is generating 32-bit
>executables (some sort of 32-bit extender maybe?).
>

GNAT and Gcc on both DOS and NT use COFF executables.  On DOS, the go32
memory extender is prepended onto the COFF file to give you an .exe file
recognizable to the OS.  Since the Microsoft linker is used on the NT
versions, it does whatever to make it recognizable to NT.