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From: jerry@jvdsys.nextjk.stuyts.nl (Jerry van Dijk)
Subject: Re: linking with C++
Date: 1998/04/21
Message-ID: <Ers9F1.7n@jvdsys.nextjk.stuyts.nl>#1/1
X-Deja-AN: 346456284
References: <6hglkj$dlh$1@nyheter.chalmers.se>
Organization: * JerryWare *, Leiden, Holland
Newsgroups: comp.lang.ada
Date: 1998-04-21T00:00:00+00:00
List-Id: <comp.lang.ada>


Martin Klang (md4mars@mdstud.chalmers.se) wrote:

: lately i've been trying out ADA, and even though it's not by a long way as
: esthetically pleasing as C++, i must confess it's a pretty useful little
: language.

You just brightened up my day :-)

: i cannot link to C++ with gnatlink.

Well, actually your code says:

: //file cstuff.c
: #include <stdio.h>
: void c_test()
: {
:   printf("jah!");
: }

which is not C++ but C code. So instead of:

:    pragma Import(CPP,C_Test,"c_test");

use pragma Import(C, C_Test, "c_test); and build with

gcc -c cstuff.c
gnatmake test -largs cstuff.o

BTW remember that gcc is just a driver program, and the '.c'
extension will make it use the C, not the C++ compiler. The
same goes for g++.

BTW2 remember that there might already be a program called
'test' in your path.

To try out linking to C++ use a 

// file cppstuff.cc
#include <iostream.h>
void cppstuff()
{
   cout << "jah!" << endl;
}

with the CPP import. And do not forget to link in libstdc++.

Jerry.

-- 
-- Jerry van Dijk  | email: jdijk@acm.org
-- Leiden, Holland | member Team-Ada