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Date: Wed, 16 Feb 2022 12:29:24 +0100
From: Szabolcs Nagy <>
To: Jeffrey Walton <>,
Subject: Re: musl how to use hard float with aarch64-none-elf-gcc

* Jeffrey Walton <> [2022-02-16 05:24:48 -0500]:
> On Wed, Feb 16, 2022 at 4:51 AM SIMONE MIONE <> 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.

what does 'soft-float by musl' mean?

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