Date: Mon, 24 Jan 2005 19:29:39 -0500
From: Daniel Jacobowitz <dan@debian.org>
To: Edward Peschko <esp5@pge.com>
Cc: Richard Henderson <rth@redhat.com>, gcc@gcc.gnu.org,
       libc-alpha@sources.redhat.com, binutils@sources.redhat.com,
       linux-kernel@vger.kernel.org
Subject: Re: forestalling GNU incompatibility - proposal for binary relative dynamic linking
Message-ID: <20050125002939.GA12826@nevyn.them.org>
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	Richard Henderson <rth@redhat.com>, gcc@gcc.gnu.org,
	libc-alpha@sources.redhat.com, binutils@sources.redhat.com,
	linux-kernel@vger.kernel.org
References: <20050124222449.GB16078@venus> <20050124231047.GC29545@redhat.com> <20050124231636.GC19422@venus> <20050124233849.GA29765@redhat.com> <20050124235311.GD19422@venus>
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On Mon, Jan 24, 2005 at 03:53:11PM -0800, Edward Peschko wrote:
> On Mon, Jan 24, 2005 at 03:38:49PM -0800, Richard Henderson wrote:
> > On Mon, Jan 24, 2005 at 03:16:36PM -0800, Edward Peschko wrote:
> > > cool.. any chance for some syntactic sugar so me (and other 
> > > users/vendors) wouldn't need to change any of their build scripts 
> > > and compilation processes?
> > 
> > Uh, like what?  That's about as simple as you can get.
> > 
> > 
> > r~
> 
> I don't understand. 
> 
> Which is simpler, changing an environmental variable, or adding extra 
> CFLAGS to every single compile and recompiling?
> 
> In addition, in your --rpath example, the relative pathing is hardcoded
> into the executable, wheras with "*" you could modify the runtime behavior
> of the executable at runtime. I suppose you could change this with chrpath,
> but why bother? What if you want to test out two versions of relative
> libraries side by side? 

You might want to take a look at Richard's suggestion again.  The
string '$ORIGIN' gets hardcoded into the binary and handled by the
dynamic linker.

But really, RPATH is a good solution to almost no problems.

-- 
Daniel Jacobowitz
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