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Date: Wed, 21 May 2003 06:44:40 -0700 (PDT)
From: Gerald Pfeifer <gerald@FreeBSD.org>
Message-Id: <200305211344.h4LDiew9035764@freefall.freebsd.org>
To: bostic@sleepycat.com, gerald@FreeBSD.org,
	freebsd-bugs@FreeBSD.org
Subject: Re: gnu/13525: gcc fails load against library with both C++ and C
	modules
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Synopsis: gcc fails load against library with both C++ and C modules

State-Changed-From-To: feedback->closed
State-Changed-By: gerald
State-Changed-When: Wed May 21 06:41:18 PDT 2003
State-Changed-Why: 
I debugged this in further depth, and it is apparently operator error: As
soon as you use any C++ library routines (whether directly or indirectly)
you need to link the final binary using g++, not gcc, and the g++ driver
then will link any additional libraries required.

The following would have worked for the example provided:
  gcc -Wall -c -fpic a.c
  c++ -Wall -c -fpic b.cc
  gcc -shared -o libab.so a.o b.o
  gcc -Wall -c c.c
  c++ -o c c.o ./libab.so

http://www.freebsd.org/cgi/query-pr.cgi?pr=13525