OpenBSD does not have OpenMP available in base or ports compilers

Index: setup.py
--- setup.py.orig
+++ setup.py
@@ -437,7 +437,7 @@ class BuildExt (build_ext):
 
     def initialize_options(self):
         self.set_rpath = False
-        self.disable_openmp = False
+        self.disable_openmp = True
         build_ext.initialize_options(self)
 
     def finalize_options(self):