python3: upgrade to 3.7.2

I took the same approach as the recent perl upgrade: write recipe from scratch,
taking the pieces from the old recipe only when they were proven to be necessary.

The pgo, manifest and ptest features are all preserved.

New features:

- native and target recipes are now unified into one recipe

- check_build_completeness.py runs right after do_compile() and verifies that
all optional modules have been built (a notorious source of regressions)

- a new approach to sysconfig.py and distutils/sysconfig.py returning values
appropriate for native or target builds: we copy the configuration file to a
separate folder, add that folder to sys.path (through environment variable
that differs between native and target builds), and point python to the file
through another environment variable.

There were a few other patches where it was difficult to decide if the patch
is still relevant, and how to test that it works correctly; please add those
as-needed by testing the new python.

(From OE-Core rev: 02714c105426b0d687620913c1a7401b386428b6)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3/0001-Do-not-add-usr-lib-termcap-to-linker-flags-to-avoid-.patch b/meta/recipes-devtools/python/python3/0001-Do-not-add-usr-lib-termcap-to-linker-flags-to-avoid-.patch
new file mode 100644
index 0000000000..09f279ba1d
--- /dev/null
+++ b/meta/recipes-devtools/python/python3/0001-Do-not-add-usr-lib-termcap-to-linker-flags-to-avoid-.patch
@@ -0,0 +1,25 @@
+From 23294c6ba6896115828293fdb7e67b47b38ba675 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Fri, 25 Jan 2019 19:04:13 +0100
+Subject: [PATCH] Do not add /usr/lib/termcap to linker flags to avoid host
+ contamination
+
+Upstream-Status: Inappropriate [oe-core specific]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+---
+ setup.py | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/setup.py b/setup.py
+index b4357e3..fbec00d 100644
+--- a/setup.py
++++ b/setup.py
+@@ -856,7 +856,6 @@ class PyBuildExt(build_ext):
+                                                      'termcap'):
+                 readline_libs.append('termcap')
+             exts.append( Extension('readline', ['readline.c'],
+-                                   library_dirs=['/usr/lib/termcap'],
+                                    extra_link_args=readline_extra_link_args,
+                                    libraries=readline_libs) )
+         else: