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.

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

1 files changed, 42 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3/0001-distutils-sysconfig-append-STAGING_LIBDIR-python-sys.patch b/meta/recipes-devtools/python/python3/0001-distutils-sysconfig-append-STAGING_LIBDIR-python-sys.patch
new file mode 100644
index 0000000000..8083345a4e
--- /dev/null
+++ b/meta/recipes-devtools/python/python3/0001-distutils-sysconfig-append-STAGING_LIBDIR-python-sys.patch
@@ -0,0 +1,42 @@
+From 4865615a2bc2b78c739e4c33f536712c7f9af061 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Thu, 31 Jan 2019 16:46:30 +0100
+Subject: [PATCH] distutils/sysconfig: append
+ STAGING_LIBDIR/python-sysconfigdata to sys.path
+
+So that target configuration can be used when running native python
+
+Upstream-Status: Inappropriate [oe-core specific]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+---
+ Lib/distutils/sysconfig.py | 2 ++
+ Lib/sysconfig.py           | 2 ++
+ 2 files changed, 4 insertions(+)
+
+diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
+index e07a6c8..6b8c129 100644
+--- a/Lib/distutils/sysconfig.py
++++ b/Lib/distutils/sysconfig.py
+@@ -421,6 +421,8 @@ def _init_posix():
+         platform=sys.platform,
+         multiarch=getattr(sys.implementation, '_multiarch', ''),
+     ))
++    if 'STAGING_LIBDIR' in os.environ:
++        sys.path.append(os.environ['STAGING_LIBDIR']+'/python-sysconfigdata')
+     _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
+     build_time_vars = _temp.build_time_vars
+     global _config_vars
+diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
+index 9ee4d31..e586abd 100644
+--- a/Lib/sysconfig.py
++++ b/Lib/sysconfig.py
+@@ -412,6 +412,8 @@ def _init_posix(vars):
+     """Initialize the module as appropriate for POSIX systems."""
+     # _sysconfigdata is generated at build time, see _generate_posix_vars()
+     name = _get_sysconfigdata_name()
++    if 'STAGING_LIBDIR' in os.environ:
++        sys.path.append(os.environ['STAGING_LIBDIR']+'/python-sysconfigdata')
+     _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
+     build_time_vars = _temp.build_time_vars
+     vars.update(build_time_vars)