Index: setup.py
===================================================================
--- setup.py	(revision 80088)
+++ setup.py	(working copy)
@@ -749,10 +749,8 @@
             '/usr/include/db3',
             '/usr/local/include/db3',
             '/opt/sfw/include/db3',
-            # Fink defaults (http://fink.sourceforge.net/)
-            '/sw/include/db4',
-            '/sw/include/db3',
         ]
+
         # 4.x minor number specific paths
         for x in gen_db_minor_ver_nums(4):
             db_inc_paths.append('/usr/include/db4%d' % x)
@@ -761,8 +759,7 @@
             db_inc_paths.append('/usr/local/include/db4%d' % x)
             db_inc_paths.append('/pkg/db-4.%d/include' % x)
             db_inc_paths.append('/opt/db-4.%d/include' % x)
-            # MacPorts default (http://www.macports.org/)
-            db_inc_paths.append('/opt/local/include/db4%d' % x)
+
         # 3.x minor number specific paths
         for x in gen_db_minor_ver_nums(3):
             db_inc_paths.append('/usr/include/db3%d' % x)
@@ -771,6 +768,21 @@
             db_inc_paths.append('/pkg/db-3.%d/include' % x)
             db_inc_paths.append('/opt/db-3.%d/include' % x)
 
+        # Only include certain paths if the corresponding bin directory is
+        # in PATH.  This makes it possible for someone to create a pretty
+        # clean Mac framework build with Fink (or MacPorts) installed just
+        # by removing the bin directory from PATH.
+        if "/sw/bin" in os.environ["PATH"].split(":"):
+            # Fink defaults (http://fink.sourceforge.net/)
+            db_inc_paths.extend([
+                '/sw/include/db4',
+                '/sw/include/db3',
+                ])
+        if "/opt/local/bin" in os.environ["PATH"].split(":"):
+            # MacPorts default (http://www.macports.org/)
+            for x in gen_db_minor_ver_nums(4):
+                db_inc_paths.append('/opt/local/include/db4%d' % x)
+
         # Add some common subdirectories for Sleepycat DB to the list,
         # based on the standard include directories. This way DB3/4 gets
         # picked up when it is installed in a non-standard prefix and