Update build docs for macOS (GH-16844)

README

@@ -582,19 +582,30 @@ Reliant UNIX: The thread support does not compile on Reliant UNIX, and
         platform as well.  This should be resolved in time for a
         future release.
 
-MacOSX: The tests will crash on both 10.1 and 10.2 with SEGV in
+macOS:  Building a complete Python installation requires the use of various
+        additional third-party libraries, depending on your build platform and
+        configure options.  Not all standard library modules are buildable or
+        useable on all platforms.  Refer to the "Install Dependencies" section
+        section of the "Developer Guide" for current detailed information on
+        dependencies for macOS:
+            https://devguide.python.org/setup/#install-dependencies
+
+        On macOS, there are additional configure and build options related
+        to macOS framework and universal builds.  Refer to Mac/README.rst.
+
+        The tests will crash on both 10.1 and 10.2 with SEGV in
         test_re and test_sre due to the small default stack size.  If
         you set the stack size to 2048 before doing a "make test" the
         failure can be avoided.  If you're using the tcsh or csh shells,
         use "limit stacksize 2048" and for the bash shell (the default
-        as of OSX 10.3), use "ulimit -s 2048".
+        as of macOS 10.3), use "ulimit -s 2048".
 
         On naked Darwin you may want to add the configure option
         "--disable-toolbox-glue" to disable the glue code for the Carbon
         interface modules. The modules themselves are currently only built
         if you add the --enable-framework option, see below.
 
-        On a clean OSX /usr/local does not exist. Do a
+        On a clean macOS /usr/local does not exist. Do a
         "sudo mkdir -m 775 /usr/local"
         before you do a make install. It is probably not a good idea to
         do "sudo make install" which installs everything as superuser,
@@ -605,20 +616,6 @@ MacOSX: The tests will crash on both 10.1 and 10.2 with SEGV in
         to install additional unix software. Disabling fink (remove all 
         references to /sw from your .profile or .login) should solve this.
 
-        You may want to try the configure option "--enable-framework"
-        which installs Python as a framework. The location can be set
-        as argument to the --enable-framework option (default
-        /Library/Frameworks). A framework install is probably needed if you
-        want to use any Aqua-based GUI toolkit (whether Tkinter, wxPython,
-        Carbon, Cocoa or anything else).
-
-        You may also want to try the configure option "--enable-universalsdk"
-        which builds Python as a universal binary with support for the 
-        i386 and PPC architetures. This requires Xcode 2.1 or later to build.
-
-        See Mac/README for more information on framework and 
-        universal builds.
-
 Cygwin: With recent (relative to the time of writing, 2001-12-19)
         Cygwin installations, there are problems with the interaction
         of dynamic linking and fork().  This manifests itself in build
@@ -949,11 +946,6 @@ Emacs found in Misc/python-mode.el.  (But then again, more recent
 versions of Emacs may already have it.)  Follow the instructions that
 came with Emacs for installation of site-specific files.
 
-On Mac OS X, if you have configured Python with --enable-framework, you
-should use "make frameworkinstall" to do the installation. Note that this
-installs the Python executable in a place that is not normally on your
-PATH, you may want to set up a symlink in /usr/local/bin.
-
 
 Installing multiple versions
 ----------------------------