Issue #28046: get_sysconfigdata_name() uses the _PYTHON_SYSCONFIGDATA_NAME

environment variable that is defined when cross-compiling.

2 files changed, 11 insertions, 16 deletions

diff --git a/Lib/distutils/sysconfig.py b/Lib/distutils/sysconfig.py
index 229626e1b4..8bf1a7016b 100644
--- a/Lib/distutils/sysconfig.py
+++ b/Lib/distutils/sysconfig.py
@@ -418,11 +418,12 @@ _config_vars = None
 def _init_posix():
     """Initialize the module as appropriate for POSIX systems."""
     # _sysconfigdata is generated at build time, see the sysconfig module
-    name = '_sysconfigdata_{abi}_{platform}_{multiarch}'.format(
+    name = os.environ.get('_PYTHON_SYSCONFIGDATA_NAME',
+        '_sysconfigdata_{abi}_{platform}_{multiarch}'.format(
         abi=sys.abiflags,
         platform=sys.platform,
         multiarch=getattr(sys.implementation, '_multiarch', ''),
-    )
+    ))
     _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 13275dea34..9314e71a2f 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -342,19 +342,13 @@ def get_makefile_filename():
     return os.path.join(get_path('stdlib'), config_dir_name, 'Makefile')
 
 
-def _get_sysconfigdata_name(vars=None):
-    if vars is None:
-        return '_sysconfigdata_{abi}_{platform}_{multiarch}'.format(
-            abi=sys.abiflags,
-            platform=sys.platform,
-            multiarch=getattr(sys.implementation, '_multiarch', ''),
-        )
-    else:
-        return '_sysconfigdata_{abi}_{platform}_{multiarch}'.format(
-            abi=vars['ABIFLAGS'],
-            platform=vars['MACHDEP'],
-            multiarch=vars.get('MULTIARCH', ''),
-        )
+def _get_sysconfigdata_name():
+    return os.environ.get('_PYTHON_SYSCONFIGDATA_NAME',
+        '_sysconfigdata_{abi}_{platform}_{multiarch}'.format(
+        abi=sys.abiflags,
+        platform=sys.platform,
+        multiarch=getattr(sys.implementation, '_multiarch', ''),
+    ))
 
 
 def _generate_posix_vars():
@@ -397,7 +391,7 @@ def _generate_posix_vars():
     # _sysconfigdata module manually and populate it with the build vars.
     # This is more than sufficient for ensuring the subsequent call to
     # get_platform() succeeds.
-    name = _get_sysconfigdata_name(vars)
+    name = _get_sysconfigdata_name()
     if 'darwin' in sys.platform:
         import types
         module = types.ModuleType(name)