Installation error in 'ellc' package

[sam687]

Hi, I am getting the following error while installing 'allesfitter' inside a conda environment in Ubuntu 20.04.5. It shows an error while installing ellc with pip. does anyone have any solution? thank you.

  customize Gnu95FCompiler
  Could not locate executable gfortran
  Could not locate executable f95
  customize IntelFCompiler
  Could not locate executable ifort
  Could not locate executable ifc
  customize LaheyFCompiler
  Could not locate executable lf95
  customize PGroupFCompiler
  Could not locate executable pgfortran
  customize NVHPCFCompiler
  Could not locate executable nvfortran
  customize AbsoftFCompiler
  Could not locate executable f90
  Could not locate executable f77
  customize NAGFCompiler
  customize VastFCompiler
  customize CompaqFCompiler
  Could not locate executable fort
  customize IntelItaniumFCompiler
  Could not locate executable efort
  Could not locate executable efc
  customize IntelEM64TFCompiler
  customize GnuFCompiler
  Could not locate executable g77
  customize G95FCompiler
  Could not locate executable g95
  customize PathScaleFCompiler
  Could not locate executable pathf95
  customize NAGFORCompiler
  Could not locate executable nagfor
  customize FujitsuFCompiler
  Could not locate executable frt
  don't know how to compile Fortran code on platform 'posix'
  warning: build_ext: f77_compiler=None is not available.

  building 'ellc.ellc_f' extension
  error: extension 'ellc.ellc_f' has Fortran sources but no Fortran compiler found

  ########### EXT COMPILER OPTIMIZATION ###########
  Platform      :
    Architecture: x64
    Compiler    : gcc

  CPU baseline  :
    Requested   : 'min'
    Enabled     : SSE SSE2 SSE3
    Flags       : -msse -msse2 -msse3
    Extra checks: none

  CPU dispatch  :
    Requested   : 'max -xop -fma4'
    Enabled     : SSSE3 SSE41 POPCNT SSE42 AVX F16C FMA3 AVX2 AVX512F AVX512CD AVX512_KNL AVX512_KNM AVX512_SKX AVX512_CLX AVX512_CNL AVX512_ICL
    Generated   : none
  CCompilerOpt.cache_flush[804] : write cache to path -> /tmp/pip-install-58u1sh9_/ellc_ce35a470ee0248cfa159333057a4c85f/build/temp.linux-x86_64-cpython-38/ccompiler_opt_cache_ext.py
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip. error: legacy-install-failure

× Encountered error while trying to install package. ╰─> ellc

I have tried the solution provided (via installing through brew), but it also giving some error

[MNGuenther]

Hi @sam687 thanks for reaching out. As this is not an allesfitter issue, I recommend raising this issue on ellc's page (https://github.com/pmaxted/ellc/issues) instead.

(@wangxianyu7, not to put any monkeys on your back, but please feel free to chime in if you spot any easy solution.)

[sam687]

ok. Thank you.

[wangxianyu7]

@sam687 To install ellc, you will first need to install gfortran. You can do this by running 'apt install gfortran'.

Or just use "conda install -c conda-forge ellc".

[sam687]

@MNGuenther @wangxianyu7 Thank you. It works.

[MNGuenther]

As always, thanks so much @wangxianyu7! I will add your wisdom to the website's installation page!