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python3/SOURCES/00353-architecture-names-up...

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Lumir Balhar <lbalhar@redhat.com>
Date: Tue, 4 Aug 2020 12:04:03 +0200
Subject: [PATCH] 00353: Original names for architectures with different names
downstream
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https://fedoraproject.org/wiki/Changes/Python_Upstream_Architecture_Names
Pythons in RHEL/Fedora used different names for some architectures
than upstream and other distros (for example ppc64 vs. powerpc64).
This was patched in patch 274, now it is sedded if %with legacy_archnames.
That meant that an extension built with the default upstream settings
(on other distro or as an manylinux wheel) could not been found by Python
on RHEL/Fedora because it had a different suffix.
This patch adds the legacy names to importlib so Python is able
to import extensions with a legacy architecture name in its
file name.
It work both ways, so it support both %with and %without legacy_archnames.
WARNING: This patch has no effect on Python built with bootstrap
enabled because Python/importlib_external.h is not regenerated
and therefore Python during bootstrap contains importlib from
upstream without this feature. It's possible to include
Python/importlib_external.h to this patch but it'd make rebasing
a nightmare because it's basically a binary file.
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
---
Lib/importlib/_bootstrap_external.py | 40 ++++++++++++++++++++++++++--
1 file changed, 38 insertions(+), 2 deletions(-)
diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
index 9feec50842..5bb2454a5c 100644
--- a/Lib/importlib/_bootstrap_external.py
+++ b/Lib/importlib/_bootstrap_external.py
@@ -1361,7 +1361,7 @@ def _get_supported_file_loaders():
Each item is a tuple (loader, suffixes).
"""
- extensions = ExtensionFileLoader, _imp.extension_suffixes()
+ extensions = ExtensionFileLoader, _alternative_architectures(_imp.extension_suffixes())
source = SourceFileLoader, SOURCE_SUFFIXES
bytecode = SourcelessFileLoader, BYTECODE_SUFFIXES
return [extensions, source, bytecode]
@@ -1428,7 +1428,7 @@ def _setup(_bootstrap_module):
# Constants
setattr(self_module, '_relax_case', _make_relax_case())
- EXTENSION_SUFFIXES.extend(_imp.extension_suffixes())
+ EXTENSION_SUFFIXES.extend(_alternative_architectures(_imp.extension_suffixes()))
if builtin_os == 'nt':
SOURCE_SUFFIXES.append('.pyw')
if '_d.pyd' in EXTENSION_SUFFIXES:
@@ -1441,3 +1441,39 @@ def _install(_bootstrap_module):
supported_loaders = _get_supported_file_loaders()
sys.path_hooks.extend([FileFinder.path_hook(*supported_loaders)])
sys.meta_path.append(PathFinder)
+
+
+_ARCH_MAP = {
+ "-arm-linux-gnueabi.": "-arm-linux-gnueabihf.",
+ "-armeb-linux-gnueabi.": "-armeb-linux-gnueabihf.",
+ "-mips64-linux-gnu.": "-mips64-linux-gnuabi64.",
+ "-mips64el-linux-gnu.": "-mips64el-linux-gnuabi64.",
+ "-ppc-linux-gnu.": "-powerpc-linux-gnu.",
+ "-ppc-linux-gnuspe.": "-powerpc-linux-gnuspe.",
+ "-ppc64-linux-gnu.": "-powerpc64-linux-gnu.",
+ "-ppc64le-linux-gnu.": "-powerpc64le-linux-gnu.",
+ # The above, but the other way around:
+ "-arm-linux-gnueabihf.": "-arm-linux-gnueabi.",
+ "-armeb-linux-gnueabihf.": "-armeb-linux-gnueabi.",
+ "-mips64-linux-gnuabi64.": "-mips64-linux-gnu.",
+ "-mips64el-linux-gnuabi64.": "-mips64el-linux-gnu.",
+ "-powerpc-linux-gnu.": "-ppc-linux-gnu.",
+ "-powerpc-linux-gnuspe.": "-ppc-linux-gnuspe.",
+ "-powerpc64-linux-gnu.": "-ppc64-linux-gnu.",
+ "-powerpc64le-linux-gnu.": "-ppc64le-linux-gnu.",
+}
+
+
+def _alternative_architectures(suffixes):
+ """Add a suffix with an alternative architecture name
+ to the list of suffixes so an extension built with
+ the default (upstream) setting is loadable with our Pythons
+ """
+
+ for suffix in suffixes:
+ for original, alternative in _ARCH_MAP.items():
+ if original in suffix:
+ suffixes.append(suffix.replace(original, alternative))
+ return suffixes
+
+ return suffixes