Mailing-List:	contact cygwin-apps-help AT sourceware DOT cygnus DOT com; run by ezmlm
Sender:	cygwin-apps-owner AT sourceware DOT cygnus DOT com
List-Subscribe:	<mailto:cygwin-apps-subscribe AT sources DOT redhat DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin-apps/>
List-Post:	<mailto:cygwin-apps AT sources DOT redhat DOT com>
List-Help:	<mailto:cygwin-apps-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/lists.html#faqs>
Delivered-To:	mailing list cygwin-apps AT sources DOT redhat DOT com
Message-ID:	<022601c0c62b$b79fcb10$0200a8c0@lifelesswks>
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-apps AT cygwin DOT com>
Cc:	<newlib AT sources DOT redhat DOT com>
References:	<01b301c0c621$063e4ae0$0200a8c0 AT lifelesswks> <200104160327 DOT XAA06356 AT envy DOT delorie DOT com> <01dc01c0c628$23c1f880$0200a8c0 AT lifelesswks> <20010416000543 DOT B28133 AT redhat DOT com>
Subject:	Re: next porting question for gcj
Date:	Mon, 16 Apr 2001 14:14:21 +1000
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE:	Produced By Microsoft MimeOLE V5.50.4133.2400
X-OriginalArrivalTime:	16 Apr 2001 04:07:04.0240 (UTC) FILETIME=[B1ED0300:01C0C62A]

----- Original Message -----
From: "Christopher Faylor" <cgf AT redhat DOT com>
To: <cygwin-apps AT cygwin DOT com>
Cc: <newlib AT sources DOT redhat DOT com>
Sent: Monday, April 16, 2001 2:05 PM
Subject: Re: next porting question for gcj


> On Mon, Apr 16, 2001 at 01:48:45PM +1000, Robert Collins wrote:
> >I've done some debug tracking and patched gcj to apparently work
> >correctly under cygwin. libjava just seems to have some header
issues.
> >
> >Would inserting  the __builtin_alloca define be a reasonable
workaround?
> >(__CYGWIN__ protected of course).
>
> IMO, newlib's stdlib.h should have something like this in it:
>
> #ifdef __GNUC__
> # define alloca __builtin_alloca
> #endif
>
> Does this make sense?  Or is this a little too generic for newlib?
> It may be that some platforms, supported by newlib and gcc, do not
> support __builtin_alloca.
>
> The alternative would be to do something like:
>
> #if defined(__GNU__) && defined(_USE_BUILTIN_ALLOCA)
> # define alloca __builtin_alloca
> #endif
>
> and have features.h:
> #define _USE_BUILTIN_ALLOCA
>
> Comments?
>
> cgf
>

As the problem I was reporting occurs when building make bootstrap with
gcc 3.0, I don't know if newlib's stdlib affects this.  Of course if it
doesn, then either of those options make sense to me.

Rob

- Raw text -