Issue on Apple Silicon with native Julia Build

[tknopp]

Hi,

I did not expect this to work but still report the error. On the native arm build of Julia we get the error below. Does the C library already compile on arm64e?

(jl_tAyv3V) pkg> add NFFT3
    Updating registry at `~/.julia/registries/General.toml`
   Resolving package versions...
    Updating `/private/var/folders/x7/crh034116fl_xp9hzmnqjtxr0000gn/T/jl_tAyv3V/Project.toml`
  [53104703] + NFFT3 v1.1.0
    Updating `/private/var/folders/x7/crh034116fl_xp9hzmnqjtxr0000gn/T/jl_tAyv3V/Manifest.toml`
  [53104703] + NFFT3 v1.1.0
Precompiling project...
  ✗ NFFT3
  0 dependencies successfully precompiled in 1 seconds
  1 dependency errored. To see a full report either run `import Pkg; Pkg.precompile()` or load the package

julia> using NFFT3
[ Info: Precompiling NFFT3 [53104703-03e8-40a5-ab01-812303a44cae]
ERROR: LoadError: could not load library "/Users/knopp/.julia/packages/NFFT3/1hIEY/src/libnfftjulia.dylib"
dlopen(/Users/knopp/.julia/packages/NFFT3/1hIEY/src/libnfftjulia.dylib, 0x0001): tried: '/Users/knopp/.julia/packages/NFFT3/1hIEY/src/libnfftjulia.dylib' (mach-o file, but is an incompatible architecture (have 'x86_64', need 'arm64e')), '/usr/local/lib/libnfftjulia.dylib' (no such file), '/usr/lib/libnfftjulia.dylib' (no such file)
Stacktrace:

[michaelquellmalz]

The binaries we have are for x86, you need to compile the NFFT on ARM. In general, the NFFT should compile on ARM (I had it working once on ARM with Ubuntu/Android).

I have no experience on Mac, but you would need the FFTW lib and header to compile the NFFT (you can add them in the NFFT configure by setting both flags --with-fftw3-libdir=/path/to/fftw and --with-fftw3-includedir=/path/to/fftw, the FFTW might be available via homebrew. Furthermore, when running julia it needs to link also to the libfftw3 (this is included in the Windows releases of Julia, but it looks like it is not in the Mac ARM release).