[opus] Testing ARMv8 Ne10 and intrinsics branch

Viswanath Puttagunta viswanath.puttagunta at linaro.org
Thu Apr 2 15:21:35 PDT 2015

Hello Thomas,

I use the following configure command to link against Ne10

configure --host=arm-linux-gnueabihf --enable-intrinsics

So, in my normal testing, I explicitly specify where the NE10 header
files are installed and where the NE10 libraries are installed.

Looking back at configure.ac (AC_DEFUN([OPUS_PATH_NE10],) , if you
want to go the prefix route, following should work
Eg: /usr/local/             (--with-NE10=/usr/local)
so, something like this should work
configure --host=arm-linux-gnueabihf --enable-intrinsics --with-NE10=/usr/local

But, I see the problem with the pre-compiled binaries at

simple --with-NE10=/usr/local will not work since I put the include
files in /usr/local/include/Ne10/ instead of just /usr/local/include/

You either must copy the /usr/local/include/Ne10/* into /usr/local/include/
and use --with-NE10=/usr/local

So explicitly specify location of library and includes using

Vish (Viswanath Puttagunta)
Cell: 972-342-0205
Technical Program Manager
Member Services, Linaro

On 2 April 2015 at 17:05, Thomas Daede <tdaede at mozilla.com> wrote:
> Using GCC 4.9.2, decoding the opus test vector set 10 times. All tests
> pass. I will do longer tests later with a larger test set, but it looks
> good so far.
> I am having a lot of trouble with the Ne10 detection. Using the
> precompiled Ne10 binaries at
> http://people.linaro.org/~viswanath.puttagunta/opus/NE10_root/
> Both NE10 and Ne10 capitalizations seem to be in use. Also, where should
> the NE10 headers be installed? In $PREFIX/include or
> $PREFIX/include/Ne10/? The configure.ac tests seems to assume the
> former, but your precompiled root disagrees.
> Opus master (36e0445)
> Float: 20.312s
> Fast float: 20.542s
> Fixed: 17.402s
> Opus rfcv1_final_xcorr_fixed_armv8 (eb95379)
> Fixed w/ intrinsics, no ne10: 16.384s

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