Hello,

> Yes but "-mcpu=" only sets "-mtune=" to the _default_ for the specified
> CPU architecture (at least when "-mcpu=" is set to ``an architecture and
> not an implementation'').  As far as I'm concerned it only ever really
> makes sense to choose an architecture type for "-mcpu=" and an
> implementation type for "-mtune=", but GNU option syntax being what it
> is, esp. in GCC, all the choices are far too confusing for no good
> reason whatsoever -- what a waste of code, no wonder GCC is bloated!)

Yeah, the SPARC section in the gcc docs is highly ambiguous - the ARM section for instance says that -mcpu= selects the instruction set used by the compiler and -mtune= sets implementation dependant scheduling parameters.

have fun
Michael