Sorry, I just realized that the above workflow is wrong: Since you want to fix a bug, you'll probably clone the development branch of the repo, which doesn't even have a configure script – only source releases have that. So prepend these steps:

0.1) Install the autotools.

0.2) Run autoconf, no wait, automake, no wait, autoreconf, no wait, autoreconf --install.

0.3) Delete all files in the directory and checkout a fresh copy.

0.4) autoreconf --install

1) ...