[PATCH 1/2] glibc-ports: Use /lib/ld-linux-armhf.so.3 as the dynamic linker for the ARM hard-float ABI.

[Carlos O'Donell]

On Mon, May 7, 2012 at 2:49 PM, Roland McGrath <roland@hack.frob.com> wrote:
>> "Carlos O'Donell" <carlos@systemhalted.org> writes:
>>
>> > +AC_CACHE_CHECK([whether the compiler is using the ARM hard-float ABI],
>> > +  [libc_cv_arm_pcs_vfp],
>> > +  [archcppflag=`echo "" |
>> > +       $CC $CFLAGS $CPPFLAGS -E -dM - |
>> > +       grep __ARM_PCS_VFP |
>> > +       sed -e 's/^#define //' -e 's/ .*//'`
>>
>> Please use AC_EGREP_CPP.
>
> That won't work because it doesn't pass -dM.  But anyway, what we've always
> said was the right approach is just a compile test that does:
>
> #ifndef __ARM_PCS_VFP
> #error do not have it
> #endif
>
> or the like.

I assumed that's what Andreas meant.

I'm currently using:

#ifdef __ARM_PCS_VFP
yes
#endif

With a `yes' pattern in AC_EGREP_CPP.

Cheers,
Carlos.