From: Ralf Mueller <ralf.mueller@...>
Date: 2011-02-07T17:19:36+09:00
Subject: Re: C extension: R_X86_64_32 problem when inlcuding a xxxxx.a library (64 bits SO)

On Sun, 6 Feb 2011 06:38:26 +0900
Iñaki Baz Castillo <ibc@aliax.net> wrote:

> 2011/2/5 Iñaki Baz Castillo <ibc@aliax.net>:
> > Hi, I must include a header (udns.h) and library (libudns.a) in a
> > Ruby C extension (Linux 64 bits).
> >
> > In extconf.rb I set:
> >
> >  have_library("udns")
> 
> I must add that if I install the Debian/Ubuntu package libudns-dev
> (which install both a dynamic libudns.so and a static libudns.a) then
> my Ruby C extension compiles correctly.
> 

Try '-fPIC -DPIC'.

regards
ralf