Refinement by Stefan Krah (see issue 11715, msg133194) to exit early if the

warsaw · warsaw · commit 88e194513e60 · 2011-04-07T10:40:36.000-04:00
dpkg-architecture command is not found on $PATH.  This should fix the failures
on FreeBSD and Solaris, which do not create the target file via I/O
redirection if the command isn't found (unlike Linux and OS X which do).
diff --git a/setup.py b/setup.py
@@ -342,6 +342,8 @@ def get_platform(self):
     def add_multiarch_paths(self):
         # Debian/Ubuntu multiarch support.
         # https://wiki.ubuntu.com/MultiarchSpec
+        if not find_executable('dpkg-architecture'):
+            return
         tmpfile = os.path.join(self.build_temp, 'multiarch')
         if not os.path.exists(self.build_temp):
             os.makedirs(self.build_temp)
