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<p>Correction,</p>
<p>neon <b>does</b> get enabled on raspberry pi 64. I accidentally
used the 32-bit compiler 😅. so it is just the M1 I can't figure
out how to enable neon for.</p>
<p><span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">configure
--enable-cross-compile
--cross-prefix=/tk/raspberrypi/cross-pi-gcc-10.3.0-64/bin/aarch64-linux-gnu-
--arch=arm64 </span>--target-os=linux --disable-everything
--enable-pic --enable-neon --enable-optimizations --enable-fft</span></p>
<p>Jon<span style="font-family:monospace"><br>
</span></p>
<div class="moz-cite-prefix">On 2022-11-18 11:24, drwho wrote:<br>
</div>
<blockquote type="cite"
cite="mid:c34967f9-424c-16ff-1966-cca13521de4e@infidigm.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>I also tried a raspberry pi build with --arch=armel and neon
was enabled....<br>
</p>
<p><span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">configure
--enable-cross-compile
--cross-prefix=/tk/raspberrypi/cross-pi-gcc-10.3.0-2/bin/arm-linux-gnueabihf-
--arch=armel --t</span>arget-os=linux --disable-everything
--enable-pic --enable-neon --enable-optimizations --enable-fft</span></p>
<p><span style="font-family:monospace"><span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">ARCH
arm (generic) </span><br>
big-endian no <br>
runtime cpu detection yes <br>
ARMv5TE enabled yes <br>
ARMv6 enabled yes <br>
ARMv6T2 enabled yes <br>
VFP enabled yes <br>
NEON enabled yes</span></span></p>
<p>but when I switch to --arch=arm64 neon gets disabled.<span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;"><br>
</span></span></p>
<p><span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">configure
--enable-cross-compile
--cross-prefix=/tk/raspberrypi/cross-pi-gcc-10.3.0-2/bin/arm-linux-gnueabihf-
--arch=arm64 --t</span>arget-os=linux --disable-everything
--enable-pic --enable-neon --enable-optimizations --enable-fft<br>
</span></p>
<p><br>
<span style="font-family:monospace"><span
style="font-family:monospace"><span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">ARCH
aarch64 (generic) </span><br>
big-endian no <br>
runtime cpu detection yes <br>
NEON enabled no <br>
VFP enabled no<br>
<br>
Jon<br>
</span></span></span></p>
<div class="moz-cite-prefix">On 2022-11-17 22:36, drwho wrote:<br>
</div>
<blockquote type="cite"
cite="mid:f2602b3f-5a6f-293a-a546-42b920a64429@infidigm.net">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>Hello, I am trying to build ffmpeg for the Apple M1 with neon
optimizations turned on. This configure fails to enable neon
or VFP. MacOS / sdk 12.3. I've tried the release 5.1 branch
and master.<br>
</p>
<p><span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">./configure
--arch=arm64 --disable-everything --enable-pic
--enable-neon --enable-optimizations --cpu=cortex-a8
--cc=/usr/bin/clang</span></span></p>
<p><br>
<span style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;"><span
style="font-family:monospace"><span
style="color:#000000;background-color:#ffffff;">C
compiler /usr/bin/clang </span><br>
C library <br>
host C compiler gcc <br>
host C library <br>
ARCH aarch64 (cortex-a8) <br>
big-endian no <br>
runtime cpu detection yes <br>
NEON enabled no <br>
VFP enabled no <br>
debug symbols yes <br>
strip symbols yes <br>
optimize for size no <br>
optimizations yes <br>
static yes <br>
shared no <br>
postprocessing support no <br>
network support yes <br>
threading support pthreads <br>
safe bitstream reader yes <br>
texi2html enabled no <br>
perl enabled yes <br>
pod2man enabled yes <br>
makeinfo enabled yes <br>
makeinfo supports HTML no <br>
xmllint enabled yes<br>
<br>
<br>
</span></span></span></p>
</blockquote>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
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