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-rw-r--r--setuptools/_distutils/_msvccompiler.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/setuptools/_distutils/_msvccompiler.py b/setuptools/_distutils/_msvccompiler.py
index e9af4cf5..b7a06082 100644
--- a/setuptools/_distutils/_msvccompiler.py
+++ b/setuptools/_distutils/_msvccompiler.py
@@ -248,7 +248,7 @@ class MSVCCompiler(CCompiler) :
# Future releases of Python 3.x will include all past
# versions of vcruntime*.dll for compatibility.
self.compile_options = [
- '/nologo', '/Ox', '/W3', '/GL', '/DNDEBUG', '/MD'
+ '/nologo', '/O2', '/W3', '/GL', '/DNDEBUG', '/MD'
]
self.compile_options_debug = [