From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Lumir Balhar Date: Tue, 4 Aug 2020 12:04:03 +0200 Subject: [PATCH] 00353: Original names for architectures with different names downstream MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- 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 b8ac482994..62e937b819 100644 --- a/Lib/importlib/_bootstrap_external.py +++ b/Lib/importlib/_bootstrap_external.py @@ -1559,7 +1559,7 @@ 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] @@ -1623,7 +1623,7 @@ 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: @@ -1636,3 +1636,39 @@ 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