From 50f233efe4d37a20b4372cf21f1c462914ea5d40 Mon Sep 17 00:00:00 2001
From: Alex Gaynor <alex.gaynor@gmail.com>
Date: Mon, 6 Jan 2014 11:10:40 -0800
Subject: Check to see if a binding is available before trying to install it

---
 setup.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'setup.py')

diff --git a/setup.py b/setup.py
index 0bdad485..514fdab7 100644
--- a/setup.py
+++ b/setup.py
@@ -47,10 +47,12 @@ class cffi_build(build):
         from cryptography.hazmat.primitives import constant_time, padding
 
         self.distribution.ext_modules = [
-            Binding().ffi.verifier.get_extension(),
             constant_time._ffi.verifier.get_extension(),
             padding._ffi.verifier.get_extension()
         ]
+        if Binding.is_available():
+            self.distribution.ext_modules.append(Binding().ffi.verifier.get_extension())
+
         build.finalize_options(self)
 
 
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