[3.8] bpo-41100: Support macOS 11 Big Sur and Apple Silicon Macs by ned-deily · Pull Request #25806 · python/cpython

maxbelanger

and others added 11 commits

April 29, 2021 02:10

This is a partial backport of bpo-41100 changes `e8b1c038b14b5fc8120aab62c9bf5fb840274cb6` and `96d906b144e6e6aa96c5ffebecbcc5d38034bbda` for Python 3.8. We introduce the ability to build Python from source for `arm64` on macOS, but we do not make a promise of support. This allows us to omit support for Universal2 binaries as well as weak-linking of symbols from the macOS SDK based on the deployment target, which are larger changes much more difficult to merge.

This also includes a backport of subsequent bpo-42688 change `7e729978fa08a360cbf936dc215ba7dd25a06a08` to fix build errors with external `libffi`.

…thonGH-23301) (pythonGH-23455)

On macOS system provided libraries are in a shared library cache
and not at their usual location. This PR teaches distutils to search
in the SDK, even if there was no "-sysroot" argument in
the compiler flags.
(cherry picked from commit 404a719)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>

macOS releases numbering has changed as of macOS 11 Big Sur.  Previously, major releases were of the form 10.x, 10.x+1, 10.x+2, etc; as of Big Sur, they are now x, x+1, etc, so, for example, 10.15, 10.15.1, ..., 10.15.7, 11, 11.0.1, 11.1, ..., 12, 12.1, etc. Allow Python to build with single-digit deployment target values. Patch provided by FX Coudert.
(cherry picked from commit 5291639)

Co-authored-by: FX Coudert <fxcoudert@gmail.com>

…a string (pythonGH-24341) (pythonGH-24410)

* bpo-42504: Ensure that get_config_var('MACOSX_DEPLOYMENT_TARGET') is a string
(cherry picked from commit 49926cf)

Co-authored-by: Ronald Oussoren <ronaldoussoren@mac.com>

isuruf added a commit to isuruf/cpython that referenced this pull request

May 31, 2021

pythonGH-25806 was a python 3.8 backport of pythonGH-22855 to support macOS 11,
but didn't backport the changes that enabled building python
with a new macOS SDK and target an older macOS version.
This commit adds support for that.