amahoneyLIT

I am getting the same error trying `-march=native` with and without `-mfpu=neon` I am not cross-compiling. Compiling directly on the RPi. Using this same project on an arm64 dev kit...

getting closer by using flags from https://gist.github.com/fm4dd/c663217935dc17f0fc73c9c81b0aa845 `-mcpu=cortex-a53 -mfloat-abi=hard -mfpu=neon-fp-armv8 -mneon-for-64bits` and I get only 3 errors now ``` /usr/local/include/xtensor/xassign.hpp:539: error: invalid use of incomplete type ‘xt::xcontainer::simd_return_type {aka class xsimd::batch}’...

Based on those errors sounding integer-ish, maybe you meant the opposite - I tried removing all the integer arrays from my code, including - `xarray` - `xarray` - `xarray` and...

@JohanMabille the second check does not compile ``` /home/pi/dev/cpp-scratch/main.cpp:14: error: no match for ‘operator

just want to confirm - is there currently a way to disable GPU scaling on the RPi 4? I am also looking for optimal settings for SPI usage, also disabled...

I see. I tried this ``` force_turbo=1 core_freq=250 core_freq_min=250 ``` and confirmed that `vcgencmd measure_clock core` showed 250MHz under load/idle conditions I'm confused why the documentation states for `core_freq` that...

@edo1 think that ``` force_turbo=1 gpu_freq=250 gpu_freq_min=250 ``` does the trick to keep arm clock at 1500MHz and everything else at lowest 250MHz on the RPi 4

@JamesH65 thanks for pointing that out. I've added this note to the PR