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Date: Wed, 3 Feb 1999 10:13:57 -0600 (CST)
From: Mumit Khan <khan AT xraylith DOT wisc DOT edu>
To: mendes AT mgconecta DOT com DOT br
cc: "gnu-win32 AT cygnus DOT com" <gnu-win32 AT cygnus DOT com>
Subject: Re: f2c and libf2c.a
In-Reply-To: <36B871E8.E86A17D5@mgconecta.com.br>
Message-ID: <Pine.SUN.3.93.990203101135.28276B-100000@modi.xraylith.wisc.edu>
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On Wed, 3 Feb 1999 mendes AT mgconecta DOT com DOT br wrote:

> Hi everybody
>     I am having a little problem with gcc and make stuff when compiling
> fortran-translated-to-C files (using f2c from netlib). Gcc created
> libf2c.a
> just it did in my Sun workstation but the problem is when I try to
> compile my main fortran-translated-to-C file.
> The system sent me the following msgs:
> 
> 
> > libf2c.a(iio.o)(.text+0x35): undefined reference to `__errno'
> >   libf2c.a(fmt.o)(.text+0x92): undefined reference to `_impure_ptr'
> >   libf2c.a(fmt.o)(.text+0xd83): undefined reference to `_impure_ptr'

Without knowing how you build libf2c, it's impossible to tell. Does look
like that f2c is not including errno.h when using errno (instead probably
using ``extern in errno'', which is incorrect). Don't know about the 
_impure_ptr problem.

My suggestion would be to simply use g77 if you don't want to figure out
what's wrong with libf2c.

Regards,
Mumit