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Message-ID: <3AB7A995.3B8B2DFB@Network-Alchemy.com>
Date: Tue, 20 Mar 2001 11:03:50 -0800
From: Jonny Larson <JLarson AT Network-Alchemy DOT com>
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To: Earnie Boyd <earnie_boyd AT yahoo DOT com>
CC: cygwin <cygwin AT cygwin DOT com>
Subject: Re: GCC and alloca
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Earnie:
Thanks for the response.

We use gcc in CygWin to compile a ton of source files into a series of about 20
libraries.  Then we take these library files and link them to "C" code that makes up
an NDIS driver using the Microsoft NT DDK linker (which is actually the Microsoft
Incremental Linker Version 5.12.8181).

It is when we link the gcc-compiled libraries to the NDIS code that we get the alloca
unresolved errors.

Let me know if you still want to see the link statement we use.

Thanks in advance for all the help!
Jonny

Earnie Boyd wrote:

> Jonny Larson wrote:
> >
> > Even though we have no calls to alloca in our code, we're getting (link) errors
> > that __alloca is an unresolved external.  I believe this is because gcc seems to
> > use _alloca for allocating some local structures on the stack to optimize for
> > time.  Is there a gcc command-line option to turn this off?
> >
> > If not, what is the library I need to include to resolve the alloca reference?
> >
>
> What command line are you using for linking?  Is this C or C++ or
> something else?
>
> Earnie.
>
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