--- setup.py.orig	2018-08-01 13:27:41.966583309 -0600
+++ setup.py	2018-08-01 13:28:43.609764343 -0600
@@ -45,9 +45,12 @@ if sys.platform == 'cygwin':
 # false positives in the longjmp() check.
 undef_macros = ["_FORTIFY_SOURCE"]
 
+extra_compile_args = ["-Wp,-U_FORTIFY_SOURCE"]
+
 kwds = dict(include_dirs=[opj("src"),
                           opj("src", "cysignals")],
             depends=depends,
+            extra_compile_args=extra_compile_args,
             define_macros=macros,
             undef_macros=undef_macros)