[VS Addin] Disable PNaCl adding tests until newer SDK is available

visual_studio/NativeClientVSAddIn/NaCl.Build.CPPTasks/NaClCompile.cs

 
 using System;
 using System.Collections.Generic;
 using System.Text;
 using System.Collections;
 using System.IO;
 using System.Reflection;
 using System.Resources;
 using System.Windows.Forms;
 using Microsoft.Build.Framework;
@@ skipping 245 matching lines @@
                 }
             }
 
             return mergedSources.ToArray();
         }
 
         private int Compile(string pathToTool)
         {
             if (Platform.Equals("pnacl", StringComparison.OrdinalIgnoreCase))
             {
-                if (!GCCUtilities.FindPython())
+                if (!SDKUtilities.FindPython())
                 {
                     Log.LogError("PNaCl compilation requires python in your executable path.");
                     return -1;
                 }
+
+                // The SDK root is five levels up from the compiler binary.
+                string sdkroot = Path.GetDirectoryName(Path.GetDirectoryName(pathToTool));
+                sdkroot = Path.GetDirectoryName(Path.GetDirectoryName(sdkroot));
+                sdkroot = Path.GetDirectoryName(sdkroot);
+
+                int revision;
+                int version = SDKUtilities.GetSDKVersion(sdkroot, out revision);
+                if (revision < SDKUtilities.MinPNaCLSDKVersion)
+                {
+                    Log.LogError("The configured version of the NaCl SDK ({0} r{1}) is too old " +
+                                 "for building PNaCl projects.\n" +
+                                 "Please install at least 24 r{2} using the naclsdk command " +
+                                 "line tool.", version, revision, SDKUtilities.MinPNaCLSDKVersion);
+                    return -1;
+                }
             }
 
             // If multiprocess complication is enabled (not the VS default)

[binji, 2012/10/31 06:36:22]

sp: compilation

             // and the number of processors to use is not 1, then use the
             // compiler_wrapper python script to run multiple instances of
             // gcc
             if (MultiProcessorCompilation && ProcessorNumber != 1)
             {
-                if (!GCCUtilities.FindPython())
+                if (!SDKUtilities.FindPython())
                 {
                     MessageBox.Show("Multi-processor Compilation with NaCl requires that python " +

[binji, 2012/10/31 06:36:22]

maybe this should be Log.LogError like above?

                                     "be available in the visual studio executable path.\n" +
                                     "Please disable Multi-processor Compilation in the project " +
                                     "properties or add python to the your executable path.\n" +
                                     "Falling back to serial compilation.\n");
                 }
                 else
                 {
                     return CompileParallel(pathToTool);
                 }
             }
@@ skipping 231 matching lines @@
         protected override string ToolName
         {
             get
             {
                 return NaCLCompilerPath;
             }
         }
 
     }
 }