Printing compiler and linker commands when building C Extension with distutils

Question

I'm trying to debug a setup.py file for a package that builds a C extension with

from distutils.core import Extension
ext = Extension(...

I'd like to see what compiler / linker commands are actually getting executed. How do I print them when running

pip install -e ./

or

python setup.py install

Answer 1

The problem seems to be that it wasn't rebuilding the extension, but rather using a cached version. If I run

python setup.py clean --all
python setup.py develop

it rebuilds and shows all the compile/link commands.