From 8be7161bcbd16ce61643a30b4913b982fda8e5ee Mon Sep 17 00:00:00 2001
From: Scott Gigante <scottgigante@gmail.com>
Date: Sat, 22 Dec 2018 19:51:25 -0500
Subject: [PATCH] allow setting windows arch with environment var

---
 python_bindings/setup.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/python_bindings/setup.py b/python_bindings/setup.py
index 1a16797..3d77b92 100755
--- a/python_bindings/setup.py
+++ b/python_bindings/setup.py
@@ -86,6 +86,10 @@ class BuildExt(build_ext):
         'msvc': ['/EHsc', '/openmp', '/O2'],
         'unix': ['-O3', '-march=native'],
     }
+    if 'ARCH' in os.environ:
+        # /arch:[IA32|SSE|SSE2|AVX|AVX2|ARMv7VE|VFPv4]
+        # See https://docs.microsoft.com/en-us/cpp/build/reference/arch-x86
+        c_opts['msvc'].append("/arch:{}".format(os.envrion['ARCH']))
     link_opts = {
         'unix': [],
         'msvc': [],