Re: __cxa_atexit and __dso_handle

["Martin v. Löwis" <martin@v.loewis.de>]

David N. Welton wrote:

> The problem is that despite using -nostdlib whilst compiling, I still
> get __cxa_atexit and __dso_handle defined in my .o files (yes, eCos
> utilizes C++ in places).

I think the problem is not that you are getting definitions, but that 
you are getting references to these symbols.

> I found a switch to turn off __cxa_atexit, but found nothing for the
> other one.  Is it possible to get gcc 3.[recent] to generate
> executables suitable for standalone execution?  If not, I think it
> ought to be!

You mean, whether g++ supports free-standing (as opposed to hosted)
development? It certainly does: __dso_handle is part of the minimum
run-time that you need in a free-standing environmnent. Just supply
a minimum definition for it, and be done with it: it needs to be some
address. In general, it needs to be unique per shared library, but
if you don't have shared libraries, a single definition will do.

Regards,
Martin