Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
X-Sent:	9 Dec 2001 01:18:05 GMT
Message-ID:	<000b01c1804f$61867ce0$0100a8c0@hannes>
From:	"Hans Horn" <hannes AT 2horns DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	linking C++ code against library from fortran sources
Date:	Sat, 8 Dec 2001 17:18:16 -0800
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 6.00.2600.0000
X-MimeOLE:	Produced By Microsoft MimeOLE V6.00.2600.0000

Hi everybody,

I have a bunch of old numerical fortran77 sources, which I compiled with g77
and archived into, say libMyF77.a.

I want those f77 functions to be called from w/i a c++ program.

Here are my two questions:

1. to satisfy the compiler, I have to declare the functions used as
'extern'. Which language string should I be using?
"FORTRAN" as language string (as I had used on other platforms, such as AIX)
is not recognized by gcc/g++
 gcc/g++ accepts only either "C" or nothing (or ????). Which is the right
one here?
2. the linker complains about the functions used as undefined references. I
think I've told the linker properly, where to look for archives (-L<path to
libMyF77.a> -lMyF77). What am I doing wrong? Do I have to do something
special when archiving? Do I have to raise another magic flag for the
linker????


Any light shed onto the subject is severely appreciated!
Hans


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -