Issue 22878: PEP 477 - "make install" and "make altinstall" integration

The backport of ensurepip to 2.7.9 allows pip to optionally be installed
or upgraded using the bundled pip provided by the new ensurepip module.
The option can be specified persistently using the configure option:

    ./configure --with-ensurepip[=upgrade|install|no]

It can also be overridden on either the "install" or "altinstall" targets:

    make [alt]install ENSUREPIP=[upgrade|install|no]

For Python 2, the default option is "no" (do not install pip).

1 files changed, 5 insertions, 0 deletions

diff --git a/Doc/whatsnew/2.7.rst b/Doc/whatsnew/2.7.rst
index 4c86f3e..9b02687 100644
--- a/Doc/whatsnew/2.7.rst
+++ b/Doc/whatsnew/2.7.rst
@@ -2605,6 +2605,11 @@ By default, the commands ``pip``, ``pipX`` and ``pipX.Y`` will be installed on
 all platforms (where X.Y stands for the version of the Python installation),
 along with the ``pip`` Python package and its dependencies.
 
+For CPython :ref:`source builds on POSIX systems <building-python-on-unix>`,
+the ``make install`` and ``make altinstall`` commands do not bootstrap ``pip``
+by default.  This behaviour can be controlled through configure options, and
+overridden through Makefile options.
+
 On Windows and Mac OS X, the CPython installers now default to installing
 ``pip`` along with CPython itself (users may opt out of installing it
 during the installation process). Window users will need to opt in to the