ENH: Add version check for mac sdk version

dopplershift · dopplershift · commit 13fe45852fbb · 2020-07-17T17:25:05.000-06:00
This specifically lists the macOS SDK version (currently 10.11) needed
to build the osx backend. It also turns on compiler warnings for when
code uses features newer than the minimum version (and makes warnings
errors for this file).
diff --git a/setupext.py b/setupext.py
@@ -657,6 +657,8 @@ def get_extensions(self):
             'src/_macosx.m'
             ]
         ext = Extension('matplotlib.backends._macosx', sources)
+        ext.extra_compile_args.extend(['-mmacosx-version-min=10.9',
+                                       '-Wunguarded-availability', '-Werror'])
         ext.extra_link_args.extend(['-framework', 'Cocoa'])
         if platform.python_implementation().lower() == 'pypy':
             ext.extra_compile_args.append('-DPYPY=1')

Original file line number	Diff line number	Diff line change
`@@ -657,6 +657,8 @@ def get_extensions(self):`
`657`	`657`	`'src/_macosx.m'`
`658`	`658`	`]`
`659`	`659`	`ext = Extension('matplotlib.backends._macosx', sources)`
	`660`	`+ ext.extra_compile_args.extend(['-mmacosx-version-min=10.9',`
	`661`	`+ '-Wunguarded-availability', '-Werror'])`
`660`	`662`	`ext.extra_link_args.extend(['-framework', 'Cocoa'])`
`661`	`663`	`if platform.python_implementation().lower() == 'pypy':`
`662`	`664`	`ext.extra_compile_args.append('-DPYPY=1')`