Re: Is gcc 2.95 or 3 faster for M68K app?

[Toralf Lund <toralf at procaptura dot com>]

Dan Kegel wrote:

> Toralf Lund wrote:
>
> > I have an app that needs to run faster on an old M68k board... It is 
> > currently built using gcc 2.95.3, so I'm wondering if upgrading to 
> > gcc version 3 would have any real benefit in terms of speed.
>
>
> Probably not.  Version 4 might, though, especially version 4.1.

Too bad...

Maybe I'll have to go back to the old setup, then ;-(

This is a bit depressing... I've been using a compiler from Microware 
released some 20 years ago, and generates binaries that are about half 
the size of the gcc ones, and even without optimisation are faster than 
gcc -02 output... It's only running on a (different) Motorola board, 
though, which is why I'd prefer using a gcc cross compiler setup

> > The reason why I'm asking instead of just trying is that I wasn't 
> > able to build gcc 3.4.2 directly. Got a strage recursion in the 
> > configure calls...
>
>
> Did you try using http://kegel.com/crosstool to build a cross-compiler?
> That seems to work...

> Dan Kegel wrote:
>
> > > The reason why I'm asking instead of just trying is that I wasn't 
> > > able to build gcc 3.4.2 directly. Got a strage recursion in the 
> > > configure calls...
> >
> >
> >
> > Did you try using http://kegel.com/crosstool to build a cross-compiler?
> > That seems to work...
>
>
> Oh, sorry, you're using newlib.  I don't handle that yet.

OK. I also want to generate rpms (do you support that?), so I've written 
my own a spec file, but it has borrowed a lot from Bill Gatliff's 
build-crossgcc.sh

Actually, gcc 3.3.3 did work all right, but I'm not actually able to 
generate the application with it (yet.)

- Toralf



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