[Speex-dev] Fwd: Cannot compile speexdsp 1.2rc3 on ARM64

[Tristan Matthews]

Hi,

On Sat, Mar 28, 2015 at 2:34 PM, Evan JIANG <firstfan at gmail.com> wrote:

> Hi all,
>
>    (Sorry that may be duplicated that I was not a mail-list member before,
> so last mail sent failed)
>
>     I build successfully with speex-1.2rc2. And with speexdsp 1.2rc3, I
> build with i386, X86_64, armv7 and armv7s all passed.
>    But when I build for ARM64 (for iPhone 6), it failed with:
> /Applications/Xcode.app/Contents/Developer/usr/bin/make  all-recursive
> Making all in libspeexdsp
>   CC       preprocess.lo
>   CC       jitter.lo
>   CC       mdf.lo
>   CC       fftwrap.lo
>   CC       filterbank.lo
>   CC       resample.lo
> In file included from resample.c:104:
> ./resample_neon.h:134:12: error: unknown register name 'q0' in asm
>          : "q0");
>            ^
> ./resample_neon.h:195:13: error: invalid output constraint '+l' in asm
>                     [len] "+l" (len), [remainder] "+l" (remainder)
>                           ^
> 2 errors generated.
> make[2]: *** [resample.lo] Error 1
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2
>
>
> As I googled out, I found it's said:
>
> arm64 has a totally different instruction set.
>
> See: http://people.linaro.org/~rikuvoipio/aarch64-talk/
>
> The NEON assembly code needs a rewrite.
>
>
>
> But I'm not familiar with ASM code. Could anyone help to fix that?
>

For the time being, you can always disable NEON code on that platform with:
./configure --disable-neon
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