Let the SDK setup override distutils logic.

Lib/distutils/msvccompiler.py

@@ -214,6 +214,16 @@ class MSVCCompiler (CCompiler) :
         self.initialized = False
 
     def initialize(self):
+        self.__paths = []
+        if os.environ.has_key("MSSdk") and self.find_exe("cl.exe"):
+            # Assume that the SDK set up everything alright; don't try to be
+            # smarter
+            self.cc = "cl.exe"
+            self.linker = "link.exe"
+            self.lib = "lib.exe"
+            self.rc = "rc.exe"
+            self.mc = "mc.exe"
+        else:
             self.__paths = self.get_msvc_paths("path")
 
             if len (self.__paths) == 0: