Ticket #445: symlinkPatch.txt

--- config.py   2009-06-29 08:06:09.000000000 -0500
+++ config1.py  2009-06-30 23:33:34.000000000 -0500
@@ -107,6 +107,27 @@
         installprefix = p
         break
 
+if installprefix=="/":
+    # Installation not found yet, check for symlinked install.
+    #   e.g. Check if a /usr/... install is a symbolic link to /media/card/...
+
+    separatedFilePath = __file__.split(os.sep)
+    for i in range(2,len(separatedFilePath)):
+        sepShortFilePath = [""] + separatedFilePath[i:]
+        shortFilePath = os.sep.join(sepShortFilePath)
+        #logging.debug( "Installprefix check comparing %s, %s" % (shortFilePath, __file__) )
+
+        # Symbolic link check
+        if os.path.islink(shortFilePath) and os.path.samefile(shortFilePath, __file__):
+            for p in searchpath:     # verify it's an install in the searchpath
+                if shortFilePath.startswith(p):
+                    installprefix=p 
+                    break
+
+        # Stop checking if we've found and set the installprefix.
+        if installprefix != "/":
+            break
+
 logging.info( "Installprefix is %s" % installprefix )
 
 #