Fetch CONFIG_ARGS from the original source directory, instead of from
the copied source tree. When "make clean" is executed in the copied
source tree, the build directory is cleared and the configure argument
lookup fails. However, the original source directory still contains this
information.
Prevent test_tools from copying 1000M of "source"
It doesn't need a git repo, just the checkout. We skip .git metadata, Doc/build, Doc/venv, and `__pycache__` subdirs, that developers often have in their clients to reduce the size of the source tree copy ten-fold.
This should significantly reduce IO and presumably time on buildbots during this long test.
This gains 10% or more in startup time for `python -c pass` on UNIX-ish systems.
The Makefile.pre.in generating code builds on Eric's work for bpo-45020, but the .c file generator is new.
Windows version TBD.
The "freeze" tool has been part of the repo for a long time. However, it hasn't had any tests in the test suite to guard against regressions. We add such a test here. This is especially important as there has been a lot of change recently related to frozen modules, with more to come.
Note that as part of the test we build Python out-of-tree and install it in a temp dir.
https://bugs.python.org/issue45629
Ijtaba Hussain
Erlend E. Aasland
Gregory P. Smith
Victor Stinner
Inada Naoki
Eric Snow
Guido van Rossum