Also on -funit-at-a-time...

[Rob Landley]

On Thursday 06 October 2005 14:47, David Daney wrote:
> Rob Landley wrote:
> > To get the most out of recent gcc's, it's best to compile more than one c
> > file at a time:
> >
> > http://gccsdk.riscos.info/mail-archive/gcc/2004/2797.html
> >
> > More or less having gcc create the .a files straight from the .c files in
> > one gulp.  I've done this and even with gcc 3.3 it produces smaller
> > resulting binaries.
>
> If there are any unused functions or data, you can win by using
> -ffunction-sections -fdata-sections -Wl,--gc-sections as well.  This
> allows the linker to eliminate any unreferenced code or data.  However
> you need very recent binutils to make it work.

How recent?

It's possible that for 1.1 we can specify a minimum toolset.  (Not that we 
won't _compile_ with other stuff, but we do need a target to optimize for.)

Rob