[RFC 0/4] Fix recent sim/*/config.in fallout: frv, m32r, sh64, iq2000

[Hans-Peter Nilsson]

> From: Hans-Peter Nilsson <hp@axis.com>
> Date: Wed, 20 Aug 2014 06:28:23 +0200

> Recently, a change requiring -ldl due to bfd plugin default changing
> from off to on, spread throughout the generated configury files, for
> simulators as well as gdb.  In that process, sim/*/config.in for the
> sims below was regenerated for the first time since 2012.  This had
> build-breaking fallouts for some simulator showing bloopers in changes
> from around 2013-03-23, attempts enabling sim-hardware and
> dv-sockser.o.  Here's my take on fixing that: let's return to the
> state before those attempts.  This is a request-for-comments, I'll
> commit this in a few days unless someone has a better idea, one that
> lets these simulators build *without* --{enable,disable} options and
> where committing this would still not be an incremental improvement.

Now committed.  I'll stop here, noting that possible further cleanups
would be to fix the buggy SIM_AC_OPTION_HARDWARE and decouple the
prerequisites for dv-sockser.o from the act of actually enabling it
(e.g. the now combined effect of HAVE_DV_SOCKSER).  Please also, if
you consider "re-enabling" simulated hardware for these sims, first
investigate whether all the wires and plumbing is in place for it to
actually make a difference in function for the particular sim.  Also,
test-cases for the enabled simulated hardware would be helpful, even a
simple "hello, world" to a simulated serial port.

brgds, H-P