BLD: remove -ftrapping-math on macosx_arm64

Author: andyfaff

numpy/distutils/ccompiler.py

@@ -1,6 +1,7 @@
 import os
 import re
 import sys
+import platform
 import shlex
 import time
 import subprocess
@@ -394,8 +395,14 @@ def CCompiler_customize_cmd(self, cmd, ignore=()):
     log.info('customize %s using %s' % (self.__class__.__name__,
                                         cmd.__class__.__name__))
 
-    if hasattr(self, 'compiler') and 'clang' in self.compiler[0]:
+    if (
+        hasattr(self, 'compiler') and
+        'clang' in self.compiler[0] and
+        not (platform.machine() == 'arm64' and sys.platform == 'darwin')
+    ):
         # clang defaults to a non-strict floating error point model.
+        # However, '-ftrapping-math' is not currently supported (2022-04-08)
+        # for macosx_arm64.
         # Since NumPy and most Python libs give warnings for these, override:
         self.compiler.append('-ftrapping-math')
         self.compiler_so.append('-ftrapping-math')