From:	anorland AT hem2 DOT passagen DOT se (Anders Norlander)
Subject:	Re: gcc produces foo.exe, not foo
24 Sep 1998 17:13:58 -0700 :
Message-ID:	<360A0444.EF577C75.cygnus.gnu-win32@hem2.passagen.se>
References:	<Pine DOT SUN DOT 3 DOT 93 DOT 980923095850 DOT 1519C-100000 AT modi DOT xraylith DOT wisc DOT edu>
Mime-Version:	1.0
To:	Mumit Khan <khan AT xraylith DOT wisc DOT edu>
Cc:	gnu-win32 AT cygnus DOT com

Mumit Khan wrote:
> 
> On Wed, 23 Sep 1998, Arne Glenstrup wrote:
> 
> >
> > The problem is that it seems that when running
> >
> >   gcc -o foo foo.c
> >
> > it produces not a file named foo, but a file named foo.exe. This has
> > caused me problems when writing a Makefile somewhat like
> >
> >   bar: foo.c
> >           gcc -o foo foo.c
> >           mv foo bar
> >
> > because it complains when trying to mv file foo.
> >
> > What is the standard way of circumventing this problem? Simply writing
> >
> >           mv foo.exe bar.exe
> >
> 
> All my local configuration systems check for executable extension and
> define a variable such as exeext to either the extension or "" if none
> is added by default. Lots of GNU Makefiles are beginning to use this
> as well. The Makefile rules look like the following:
> 
>   PROGRAMS = bar$(exeext)
> 
>   bar$(exeext): foo.c
>         $(CC) -o foo foo.c
>         mv foo$(exeext) bar$(exeext)
> 
> Rather ugly, but currently the only usable solution.
> 
> As for the rationale for adding the automatic .exe, I'm somewhat in
> favor of, if not thrilled by, such "native compliance"; for mingw32, it
> makes perfect sense (must have .exe to jive with native system and also
> be executable by native shell); for cygwin32, bash can run programs
> with or without .exe, but have trouble when running with native shell.

Just an interesting fact. Executables can actually have any extension
*except* "" in win32. The limitation of the ".exe" extension
is not built in the kernel, but in the shell, i.e it is possible
to start processes with any extension via `CreateProcess' but
not with ShellExecute (which instead tries to find an associated
program).

/Anders
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