[U-Boot] [PATCH] Add gc-section support for ARM

Charles Manning
2012-05-15T22:07:59Z

On Tuesday 15 May 2012 17:12:05 Mike Frysinger wrote:
> On Monday 14 May 2012 17:01:30 Charles Manning wrote:
> > On Monday 14 May 2012 17:15:50 Mike Frysinger wrote:
> > > On Wednesday 02 May 2012 21:37:51 Charles Manning wrote:
> > > > Seems odd that this hasn't been done yet.
> > > > Shaves 5k off an omap overo build.
> > >
> > > my understanding is that it doesn't work for some
> >
> > It won't work for people that don't set up their lds properly.
>
> current u-boot policy is to not introduce changes that knowingly break
> other platforms. so if you want to update the common arm config.mk, you
> need to at least compile test all arm boards.

Doesn't that makes it an impossible task? Not having all the boards makes it
pretty hard to test them all.

>
> > > > +PLATFORM_RELFLAGS += -ffunction-sections
> > >
> > > where's the -fdata-sections ?
> >
> > I tried that once before and could not get that to work with u-boot. I
> > figure doing just the function sections is better than nothing.
>
> so even your lds isn't setup properly ? :P

Correct. I was aiming to achieve a certain size. Once I achieved that I
stopped fiddling. The problem was probably in the relocation stuff.

>
> other arches are using both fine, so it isn't a problem of common code.

I might be incorrect, but I have noticed what appears to be some differences
between different versions of binutils.

-- CHarles