Re: [PATCH] samples: add arm-cortexa9_neon-linux-gnueabihf

[BenoÃt ThÃbaudeau <benoit dot thebaudeau at advansee dot com>]

Hi Yann, Johannes, all,

On Saturday, February 16, 2013 3:19:37 PM, Johannes Stezenbach wrote:
> Hi Yann,
> 
> On Sat, Feb 16, 2013 at 12:37:28AM +0100, Yann E. MORIN wrote:
> > On Saturday 16 February 2013 Yann E. MORIN wrote:
> > > On Tuesday 05 February 2013 BenoÃt ThÃbaudeau wrote:
> > > [--SNIP--]
> > > > +CT_LIBC_GLIBC_EXTRA_CONFIG_ARRAY="--disable-multi-arch"
> > > Ah... The multi-arch debianism... :-(
> > 
> > OK, forget it, I need some rest. Seems it's unrelated to Debian multi-arch.
> > 
> > But what does it mean to have a "single DSO with optimizations for multiple
> > architectures" ?
> 
> I'm guessing it is the STT_GNU_IFUNC thing.
> http://udrepper.livejournal.com/20948.html

This is also something I took from the Sourcery build script.

I think that Johannes' guess is the right one. As we are building for only a
single architecture (no multi-lib), there is no reason to enable this multi-arch
DSO optimization mechanism, which could only slow things down.

This is probably not strictly needed, but better without multi-lib (which does
not work for ARM anyway). I think that this option could be automated in CT-NG
for (e)glibc in all cases without multi-lib.

Best regards,
BenoÃt

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