--- numpy-1.17.0/numpy/core/setup.py.orig 2019-08-03 12:29:51.332524800 +0300 +++ numpy-1.17.0/numpy/core/setup.py 2019-08-03 12:31:17.294441500 +0300 @@ -387,7 +387,7 @@ """Return the define value to use for NPY_VISIBILITY_HIDDEN (may be empty string).""" hide = '__attribute__((visibility("hidden")))' - if config.check_gcc_function_attribute(hide, 'hideme'): + if config.check_gcc_function_attribute(hide, 'hideme') and sys.platform != "win32": return hide else: return ''