[RFC/PATCH] ldso: drop -Wl,-e,_start linking option

Joakim Tjernlund joakim.tjernlund at transmode.se
Sun Mar 25 17:30:07 UTC 2012


>
> On Sun, Mar 25, 2012 at 12:58 AM, Mike Frysinger <vapier at gentoo.org> wrote:
> > On Sunday 25 March 2012 03:23:38 Khem Raj wrote:
> >> On Sat, Mar 24, 2012 at 11:58 PM, Mike Frysinger <vapier at gentoo.org> wrote:
> >> > The _start symbol is the default entry point for ELFs, so there should be
> >> > no need to manually specify this.  The background motivation is that this
> >> > causes issues for ports that have a symbol prefix (like Blackfin) and so
> >> > they don't have a "_start" symbol -- it's named "__start".
> >>
> >> on MIPS its also __start unlike others where it is _start
> >
> > ok, i'll ponder exposing __USER_LABEL_PREFIX__ to the build system somehow
> > then so it automatically selects the right "_start"
>
> if binutils/ld is configured for right emulation (which it should be)
> that should take care of it automatically
> though so your patch is ok.

I think the problem is that ldso.c expects start to be named _start so
you can't just rename it __start.
You could define _start = __start in arch code that need it though.

 Jocke



More information about the uClibc mailing list