[2.7] Backport macOS universal build and installer fixes from 3.6. (GH-6469)
These include:
- bpo-32726: Provide an additional, more modern macOS installer variant that
supports macOS 10.9+ systems in 64-bit mode only. Upgrade the supplied
third-party libraries to OpenSSL 1.0.2n and SQLite 3.22.0. The 10.9+
installer now supplies its own private copy of Tcl/Tk 8.6.8.
- bpo-24414: Default macOS deployment target is now set by ``configure`` to
the build system's OS version (as is done by Python 3), not ``10.4``;
override with, for example, ``./configure MACOSX_DEPLOYMENT_TARGET=10.4``.
- bpo-19019: All 2.7 macOS installer variants now supply their own version
of ``OpenSSL 1.0.2``; the Apple-supplied SSL libraries and root
certificates are not longer used. The ``Installer Certificate`` command
in ``/Applications/Python 2.7`` may be used to download and install a
default set of root certificates from the third-party ``certifi`` package.
- bpo-11485: python.org macOS Pythons no longer supply a default SDK value
(e.g. ``-isysroot /``) or specific compiler version default (e.g.
``gcc-4.2``) when building extension modules. Use ``CC``, ``SDKROOT``,
and ``DEVELOPER_DIR`` environment variables to override compilers or to
use an SDK. See Apple's ``xcrun`` man page for more info.
- prepare for pending Apple removal of 32-bit support in future macOS release
18 files changed