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From: Greg Baker <gbaker@walleroo.rp.csiro.au>
Subject: Re: Interfacing Ada Routines in C
Date: 1996/09/11
Message-ID: <85u3t5wr8q.fsf@walleroo.rp.CSIRO.AU>#1/1
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sender: usenet@rp.CSIRO.AU (Network news)
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references: <5156mj$gd0@rumors.ucr.edu>
organization: CSIRO Division of Radiophysics/Australia Telescope National
 Facility
newsgroups: comp.lang.ada
Date: 1996-09-11T00:00:00+00:00
List-Id: <comp.lang.ada>


sto@cs.ucr.edu (Steven To) writes:
>   Does anyone know how I can interface an Ada procedure in my
> C program? 
> 
>   I've tried the following unsuccessfully:
>   
>   Compiled the ada procedure into an object file. Included
> the ada object file during the link, but the compiler isn't
> able to find the procedure referenced in my C program.
> 
>   BTW, I am using gcc and Sun Ada on a Solaris platform.

The Ada compiler does some slight name mangling (it includes the name
of the package in the link name). 
Without checking too carefully..

Ada:
 package Foo is
   procedure Bar;
 end Foo;

C:
  extern void foo__bar();
  
I derived the above information by compiling the foo package, and
running "nm foo.o | grep bar".  (Actually I did nothing of the sort,
I'm just going from memory).

Hope this helps.

-- 
Gregory D. Baker        gbaker@rp.csiro.au         CSIRO Radiophysics 
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