Issue #14605 and #14642:
Issue a warning in case Python\importlib.h needs to be rebuilt,
but there's no Python interpreter around to freeze the bootstrap
script.
diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index 817fe39..47ccd41 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -6,6 +6,13 @@
work. One should use importlib as the public-facing version of this module.
"""
+#
+# IMPORTANT: Whenever making changes to this module, be sure to run
+# a top-level make in order to get the frozen version of the module
+# update. Not doing so, will result in the Makefile to fail for
+# all others who don't have a ./python around to freeze the module
+# in the early stages of compilation.
+#
# See importlib._setup() for what is injected into the global namespace.
diff --git a/Python/importlib.h b/Python/importlib.h
index 8bc0d81..9dbd881 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
Binary files differ