diff -r dc353953ce8b Lib/ctypes/util.py
--- a/Lib/ctypes/util.py	Sun May 25 18:28:39 2014 -0700
+++ b/Lib/ctypes/util.py	Sun May 25 20:21:40 2014 -0700
@@ -113,11 +113,17 @@
 
 
     if sys.platform == "sunos5":
-        # use /usr/ccs/bin/dump on solaris
+        # /usr/ccs/bin/dump for Solaris10,
+        # /usr/bin/dump for SmartOs, OpenIndiana, et. al
         def _get_soname(f):
             if not f:
                 return None
-            cmd = "/usr/ccs/bin/dump -Lpv 2>/dev/null " + f
+            for dump_cmd in ("/usr/ccs/bin/dump", "/usr/bin/dump",):
+                if os.path.exists(dump_cmd):
+                    cmd = dump_cmd + " -Lpv 2>/dev/null " + f
+                    break
+            else:
+                return None
             with contextlib.closing(os.popen(cmd)) as f:
                 data = f.read()
             res = re.search(r'\[.*\]\sSONAME\s+([^\s]+)', data)