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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Lumir Balhar <lbalhar@redhat.com>
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Date: Tue, 4 Aug 2020 12:04:03 +0200
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Subject: [PATCH] 00353: Original names for architectures with different names
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downstream
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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https://fedoraproject.org/wiki/Changes/Python_Upstream_Architecture_Names
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Pythons in RHEL/Fedora used different names for some architectures
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than upstream and other distros (for example ppc64 vs. powerpc64).
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This was patched in patch 274, now it is sedded if %with legacy_archnames.
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That meant that an extension built with the default upstream settings
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(on other distro or as an manylinux wheel) could not been found by Python
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on RHEL/Fedora because it had a different suffix.
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This patch adds the legacy names to importlib so Python is able
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to import extensions with a legacy architecture name in its
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file name.
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It work both ways, so it support both %with and %without legacy_archnames.
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WARNING: This patch has no effect on Python built with bootstrap
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enabled because Python/importlib_external.h is not regenerated
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and therefore Python during bootstrap contains importlib from
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upstream without this feature. It's possible to include
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Python/importlib_external.h to this patch but it'd make rebasing
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a nightmare because it's basically a binary file.
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Co-authored-by: Miro Hrončok <miro@hroncok.cz>
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---
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Lib/importlib/_bootstrap_external.py | 40 ++++++++++++++++++++++++++--
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1 file changed, 38 insertions(+), 2 deletions(-)
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diff --git a/Lib/importlib/_bootstrap_external.py b/Lib/importlib/_bootstrap_external.py
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index 25a3f8c0e0..a2edbebc88 100644
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--- a/Lib/importlib/_bootstrap_external.py
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+++ b/Lib/importlib/_bootstrap_external.py
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@@ -1566,7 +1566,7 @@ def _get_supported_file_loaders():
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Each item is a tuple (loader, suffixes).
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"""
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- extensions = ExtensionFileLoader, _imp.extension_suffixes()
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+ extensions = ExtensionFileLoader, _alternative_architectures(_imp.extension_suffixes())
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source = SourceFileLoader, SOURCE_SUFFIXES
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bytecode = SourcelessFileLoader, BYTECODE_SUFFIXES
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return [extensions, source, bytecode]
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@@ -1622,7 +1622,7 @@ def _setup(_bootstrap_module):
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# Constants
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setattr(self_module, '_relax_case', _make_relax_case())
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- EXTENSION_SUFFIXES.extend(_imp.extension_suffixes())
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+ EXTENSION_SUFFIXES.extend(_alternative_architectures(_imp.extension_suffixes()))
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if builtin_os == 'nt':
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SOURCE_SUFFIXES.append('.pyw')
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if '_d.pyd' in EXTENSION_SUFFIXES:
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@@ -1635,3 +1635,39 @@ def _install(_bootstrap_module):
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supported_loaders = _get_supported_file_loaders()
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sys.path_hooks.extend([FileFinder.path_hook(*supported_loaders)])
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sys.meta_path.append(PathFinder)
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+
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+
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+_ARCH_MAP = {
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+ "-arm-linux-gnueabi.": "-arm-linux-gnueabihf.",
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+ "-armeb-linux-gnueabi.": "-armeb-linux-gnueabihf.",
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+ "-mips64-linux-gnu.": "-mips64-linux-gnuabi64.",
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+ "-mips64el-linux-gnu.": "-mips64el-linux-gnuabi64.",
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+ "-ppc-linux-gnu.": "-powerpc-linux-gnu.",
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+ "-ppc-linux-gnuspe.": "-powerpc-linux-gnuspe.",
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+ "-ppc64-linux-gnu.": "-powerpc64-linux-gnu.",
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+ "-ppc64le-linux-gnu.": "-powerpc64le-linux-gnu.",
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+ # The above, but the other way around:
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+ "-arm-linux-gnueabihf.": "-arm-linux-gnueabi.",
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+ "-armeb-linux-gnueabihf.": "-armeb-linux-gnueabi.",
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+ "-mips64-linux-gnuabi64.": "-mips64-linux-gnu.",
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+ "-mips64el-linux-gnuabi64.": "-mips64el-linux-gnu.",
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+ "-powerpc-linux-gnu.": "-ppc-linux-gnu.",
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+ "-powerpc-linux-gnuspe.": "-ppc-linux-gnuspe.",
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+ "-powerpc64-linux-gnu.": "-ppc64-linux-gnu.",
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+ "-powerpc64le-linux-gnu.": "-ppc64le-linux-gnu.",
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+}
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+
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+
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+def _alternative_architectures(suffixes):
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+ """Add a suffix with an alternative architecture name
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+ to the list of suffixes so an extension built with
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+ the default (upstream) setting is loadable with our Pythons
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+ """
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+
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+ for suffix in suffixes:
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+ for original, alternative in _ARCH_MAP.items():
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+ if original in suffix:
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+ suffixes.append(suffix.replace(original, alternative))
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+ return suffixes
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+
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+ return suffixes
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