Fix for issue 9164
diff --git a/Lib/sysconfig.py b/Lib/sysconfig.py
index 50c8133..28731df 100644
--- a/Lib/sysconfig.py
+++ b/Lib/sysconfig.py
@@ -660,8 +660,7 @@
cflags = get_config_vars().get('CFLAGS')
archs = re.findall('-arch\s+(\S+)', cflags)
- archs.sort()
- archs = tuple(archs)
+ archs = tuple(sorted(set(archs)))
if len(archs) == 1:
machine = archs[0]
diff --git a/Misc/NEWS b/Misc/NEWS
index debfb0c..b72e78a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -470,6 +470,8 @@
Library
-------
+- Issue #9164: Ensure that sysconfig handles duplicate -arch flags in CFLAGS
+
- Issue #7646: The fnmatch pattern cache no longer grows without bound.
- Issue #9136: Fix 'dictionary changed size during iteration'