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Message-ID: <00ba01c0ad34$ffb6ab40$0200a8c0@lifelesswks>
From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: "edward" <tailbert AT yahoo DOT com>, "Akim Demaille" <akim AT epita DOT fr>
Cc: <cygwin-apps AT sources DOT redhat DOT com>, <autoconf AT gnu DOT org>
References: <035401c0ac91$3ba21fd0$0200a8c0 AT lifelesswks><022001c0accf$29b724d0$0200a8c0 AT lifelesswks> <mv4vgpb5qtc DOT fsf AT nostromo DOT lrde DOT epita DOT fr> <009901c0ad30$edf3d7b0$0200a8c0 AT lifelesswks> <009301c0ad33$13de5890$9865fea9 AT edward>
Subject: Re: updated win32 macro
Date: Thu, 15 Mar 2001 20:47:40 +1100
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----- Original Message -----
From: "edward" <tailbert AT yahoo DOT com>
To: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>; "Akim Demaille"
<akim AT epita DOT fr>
Cc: <cygwin-apps AT sources DOT redhat DOT com>; <autoconf AT gnu DOT org>
Sent: Thursday, March 15, 2001 8:33 PM
Subject: Re: updated win32 macro


>
> ----- Original Message -----
> From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
> To: "Akim Demaille" <akim AT epita DOT fr>
> Cc: <cygwin-apps AT sources DOT redhat DOT com>; <autoconf AT gnu DOT org>
> Sent: Thursday, March 15, 2001 4:18 AM
> Subject: Re: updated win32 macro
>
>
> > ----- Original Message -----
> > From: "Akim Demaille" <akim AT epita DOT fr>
> > To: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
> > Cc: <cygwin-apps AT sources DOT redhat DOT com>; <autoconf AT gnu DOT org>
> > Sent: Thursday, March 15, 2001 8:23 PM
> > Subject: Re: updated win32 macro
> >
> >
> > >
> > > My opinion is that AC_PROG_CC_WIN32 should contain an AC_REQUIRE
of
> > > AC_CANONICAL_HOST, and should ensure the case $host itself.
> > >
>
> that's my suggestion as well.
>
> > Why? There is no side effect if it is tested for on platforms other
than
> > cygwin. And by being a little bit more generic less changes will be
> > needed to work with (say) WINE. Or on a cross-compile chain.
>
> you don't lose any generality. what you gain is assurance that you are
> testing on a relevant platform.

No we don't - that was my point - by wrapping it in a case statement, if
someone ports Win32 to linux, and addes -mwin32 to gcc on linux, it
won't work. See my just mailed reply to Akim for a much better test
method (once my brain was fed Coca Cola :] ).

> > And the developer writing the configure test will still need to
decide
> > what to do if it fails && they are compiling on cygwin, so they
still
> > need a case statement.
>
> ps. you might consider extending it to handle optional arguments, a-la
>
> AC_PROG_CC_WIN32(HAVE_WIN32, [echo imma winnie], [echo imma no win])
>
> implementation is left as an exercise to you =)

I thought about that, and I figure that the answer is: If you don't want
Win32, don't call the macro. Dead easy.

Rob