--- a/setup.py	2006-10-08 18:41:25.000000000 +0100
+++ b/setup.py	2012-11-26 12:13:16.167030253 +0000
@@ -238,10 +238,31 @@
                 return platform
         return sys.platform
 
+    def add_multiarch_paths(self):
+        # Debian/Ubuntu multiarch support.
+        # https://wiki.ubuntu.com/MultiarchSpec
+        # self.build_temp 
+        tmpfile = os.path.join(self.build_temp, 'multiarch')
+        if not os.path.exists(self.build_temp):
+            os.makedirs(self.build_temp)
+        ret = os.system('dpkg-architecture -qDEB_HOST_MULTIARCH > %s' %
+                        tmpfile)
+        try:
+            if ret >> 8 == 0:
+                fp = open(tmpfile)
+                multiarch_path_component = fp.readline().strip()
+                add_dir_to_list(self.compiler.library_dirs,
+                                '/usr/lib/' + multiarch_path_component)
+                add_dir_to_list(self.compiler.include_dirs,
+                                '/usr/include/' + multiarch_path_component)
+        finally:
+            os.unlink(tmpfile)
+
     def detect_modules(self):
         # Ensure that /usr/local is always used
         add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
         add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
+        self.add_multiarch_paths()
 
         # Add paths to popular package managers on OS X/darwin
         if sys.platform == "darwin":