使用whl文件编译时error: library mach has Fortran sources but no Fortran compiler found

一、问题描述

库 mach 有 Fortran 源，但没有找到 Fortran 编译器

      copying scipy/_lib/_tmpdirs.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/_testutils.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/_util.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/decorator.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/setup.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/_threadsafety.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/uarray.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      copying scipy/_lib/_version.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib
      creating build/lib.linux-aarch64-cpython-37/scipy/_lib/_uarray
      copying scipy/_lib/_uarray/__init__.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib/_uarray
      copying scipy/_lib/_uarray/setup.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib/_uarray
      copying scipy/_lib/_uarray/_backend.py -> build/lib.linux-aarch64-cpython-37/scipy/_lib/_uarray
      running build_clib
      customize UnixCCompiler
      customize UnixCCompiler using build_clib
      building 'mach' library
      Running from scipy source directory.
      /tmp/pip-build-env-w0k6_4qn/overlay/lib/python3.7/site-packages/numpy/distutils/system_info.py:716: UserWarning: Specified path /tm invalid.
        return self.get_paths(self.section, key)
      /tmp/pip-build-env-w0k6_4qn/overlay/lib/python3.7/site-packages/numpy/distutils/system_info.py:716: UserWarning: Specified path /us
        return self.get_paths(self.section, key)
      /tmp/pip-build-env-w0k6_4qn/overlay/lib/python3.7/site-packages/numpy/distutils/system_info.py:716: UserWarning: Specified path /us
        return self.get_paths(self.section, key)
      error: library mach has Fortran sources but no Fortran compiler found
      [end of output]

二、解决办法很简单，只是缺少相应的库

pip install --upgrade pip setuptools wheel
sudo apt install gfortran