Build problems on Python >= 3.8

[faultdiagnosistoolbox]

I have build problems on my Mac (Big Sur) for python versions larger than 3.7. I try to compile the git-version of odes with sundials version 5.8 (since 6.0 changed the API).

It works for Python 3.7 but not for 3.8 and 3.9 and there is something in the build system I think. The error is AttributeError: 'Extension' object has no attribute 'extra_c_compile_args' and I unfortunately don't know how to solve the problem.

Below is the traceback reporting the error.

Best,
Erik

Traceback (most recent call last):
  File "setup.py", line 45, in <module>
    setup(
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/numpy/distutils/core.py", line 169, in setup
    return old_setup(**new_attr)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/__init__.py", line 155, in setup
    return distutils.core.setup(**attrs)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/core.py", line 148, in setup
    return run_commands(dist)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/core.py", line 163, in run_commands
    dist.run_commands()
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 967, in run_commands
    self.run_command(cmd)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 986, in run_command
    cmd_obj.run()
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/wheel/bdist_wheel.py", line 299, in run
    self.run_command('build')
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 986, in run_command
    cmd_obj.run()
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/numpy/distutils/command/build.py", line 61, in run
    old_build.run(self)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/command/build.py", line 135, in run
    self.run_command(cmd_name)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/dist.py", line 986, in run_command
    cmd_obj.run()
  File "/Users/erifr93/tmp/odes_build/odes/setup_build.py", line 338, in run
    _build_ext.run(self) # actually do the build
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/numpy/distutils/command/build_ext.py", line 316, in run
    self.build_extensions()
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/command/build_ext.py", line 448, in build_extensions
    self._build_extensions_serial()
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/setuptools/_distutils/command/build_ext.py", line 473, in _build_extensions_serial
    self.build_extension(ext)
  File "/Users/erifr93/tmp/odes_build/env/lib/python3.8/site-packages/numpy/distutils/command/build_ext.py", line 380, in build_extension
    extra_cflags = ext.extra_c_compile_args or []
AttributeError: 'Extension' object has no attribute 'extra_c_compile_args'

[aragilar]

Looks like numpy/numpy#19713 was the cause, I'll see if there's an easy fix.

[aragilar]

I've released 2.6.3 which includes #132 which fixed this.