Thank you all for your reply.
I meant when I add musl's lib*.a into my makefile, the compiler complains about "undefined reference to __addtf3" (and others). Isn't that soft-float? Or emulation float?
My supervisor told me "we already have float implementation so we don't need those functions". So I was wondering if I need to disable it in some way.


Il giorno mer 16 feb 2022 alle ore 12:32 Jeffrey Walton <noloader@gmail.com> ha scritto:
On Wed, Feb 16, 2022 at 6:29 AM Szabolcs Nagy <nsz@port70.net> wrote:
>
> * Jeffrey Walton <noloader@gmail.com> [2022-02-16 05:24:48 -0500]:
> > On Wed, Feb 16, 2022 at 4:51 AM SIMONE MIONE <205212@studenti.unimore.it> wrote:
> > >
> > > I am trying to integrate musl in a baremetal environment. I already have float support but I can't manage to disable soft-float by musl.
> > >
> > > I configure with:
> > > ./configure --target=aarch64-none-elf --enable-debug --disable-shared
> > > And simple compile with:
> > > make
> > >
> > > Does anyone know how to use hardfloat instead of soft float? Is there any option or flag? Thank you
> >
> > The GCC options for hard-floats are -mfpu=neon -mfloat-abi=hard. In
> > later versions of GCC, you can also use -mfpu=auto (sometimes).
>
> that's for 32bit arm
>
> there is no soft float abi for aarch64, so i'm not sure what's going on.

Oh, you're right My bad. I did not notice it was Aarch64.

Jeff