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, 25 insertions, 0 deletions

diff --git a/meta/recipes-devtools/python/python3/0001-Makefile.pre-use-qemu-wrapper-when-gathering-profile.patch b/meta/recipes-devtools/python/python3/0001-Makefile.pre-use-qemu-wrapper-when-gathering-profile.patch
new file mode 100644
index 0000000000..fa7735ff93
--- /dev/null
+++ b/meta/recipes-devtools/python/python3/0001-Makefile.pre-use-qemu-wrapper-when-gathering-profile.patch
@@ -0,0 +1,25 @@
+From cf6a9100902484e4d028ee88742dd2487b014a98 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Wed, 30 Jan 2019 12:41:04 +0100
+Subject: [PATCH] Makefile.pre: use qemu wrapper when gathering profile data
+
+Upstream-Status: Inappropriate [oe-core specific]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ Makefile.pre.in | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/Makefile.pre.in b/Makefile.pre.in
+index a3a02a7..d5503dd 100644
+--- a/Makefile.pre.in
++++ b/Makefile.pre.in
+@@ -507,8 +507,7 @@ build_all_generate_profile:
+ 	$(MAKE) @DEF_MAKE_RULE@ CFLAGS_NODIST="$(CFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LDFLAGS_NODIST="$(LDFLAGS_NODIST) $(PGO_PROF_GEN_FLAG)" LIBS="$(LIBS)"
+ 
+ run_profile_task:
+-	@ # FIXME: can't run for a cross build
+-	$(LLVM_PROF_FILE) $(RUNSHARED) ./$(BUILDPYTHON) $(PROFILE_TASK) || true
++	./pgo-wrapper ./python -m test.regrtest --pgo test_grammar test_opcodes test_dict test_builtin test_exceptions test_types test_support || true
+ 
+ build_all_merge_profile:
+ 	$(LLVM_PROF_MERGER)