Install on RPI Zero

[melther]

Hello all
I try to install on RPI zero (not a programmer I just follow instruction !)
All seems go ok but when launch i get : Illegal instruction error

I need to configure "NEON" ? but how ?

Thank you

[ha7ilm]

Edit PARAMS_NEON in the Makefile.

[melther]

Ok, but how ?

[ha7ilm]

Currently different compile flags are needed for different architectures. This is not nice, and should be fixed (when I'll have time, but not very soon).

[fallenangel3k]

took me 2 days digging google & co. change Makefile as followed, the it will run on RPi Zero:

PARAMS_NEON = -mcpu=arm1176jzf-s -mfloat-abi=hard -mfpu=vfp -mtune=arm1176jzf-s

#tnx Jan Szumiec for the Raspberry Pi support
PARAMS_RASPI = -mfloat-abi=hard -mcpu=arm1176jzf-s -mfpu=vfp -funsafe-math-optimizations -Wformat=0

PARAMS_ARM = $(if $(call cpufeature,ARMv6,dummy-text),$(PARAMS_RASPI),$(PARAMS_NEON))

[mwshafer]

I'm trying to get this to work on an RPI5, using the following Makefile updates:

PARAMS_NEON = -mfloat-abi=hard -march=armv8-a -mtune=cortex-a76 -mfpu=auto -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS
#tnx Jan Szumiec for the Raspberry Pi support
PARAMS_RASPI = -mfloat-abi=hard -mcpu=cortext-a76 -mfpu=vfp -funsafe-math-optimizations -Wformat=0
PARAMS_ARM = $(if $(call cpufeature,BCM2712,dummy-text),$(PARAMS_RASPI),$(PARAMS_NEON))

But I am getting the following output:

NOTE: you may have to manually edit Makefile to optimize for your CPU (especially if you compile on ARM, please edit PARAMS_NEON).
Auto-detected optimization parameters: -mfloat-abi=hard -march=armv8-a -mtune=cortex-a76 -mfpu=auto -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS

rm -f dumpvect*.vect
gcc -std=gnu99 -O3 -ffast-math -fdump-tree-vect-details -dumpbase dumpvect -mfloat-abi=hard -march=armv8-a -mtune=cortex-a76 -mfpu=auto -mvectorize-with-neon-quad -funsafe-math-optimizations -Wformat=0 -DNEON_OPTS fft_fftw.c libcsdr_wrapper.c  -g -lm -lrt -lfftw3f -DUSE_FFTW -DLIBCSDR_GPL -DUSE_IMA_ADPCM -Wno-unused-result -fpic -shared -Wl,-soname,libcsdr.so.0.15 -o libcsdr.so.0.15
gcc: error: unrecognized command-line option '-mfloat-abi=hard'
gcc: error: unrecognized command-line option '-mfpu=auto'
gcc: error: unrecognized command-line option '-mvectorize-with-neon-quad'
make: *** [Makefile:56: libcsdr.so] Error 1

I'm hesitant to start messing with the NEON parameters since I'm not sure which I can just remove. Any suggestions?