diff --git a/autobuild.xml b/autobuild.xml
index 34ea70cb1192833e502bc8d6f721f950fd5d5ef4..9c2e1dffd16402e3a80f90f20648489f30a150e8 100755
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -3702,6 +3702,194 @@
           <key>name</key>
           <string>windows</string>
         </map>
+        <key>windows64</key>
+        <map>
+          <key>build_directory</key>
+          <string>build-vc120_x64</string>
+          <key>configurations</key>
+          <map>
+            <key>RelWithDebInfo</key>
+            <map>
+              <key>build</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>SecondLife.sln</string>
+                </array>
+                <key>command</key>
+                <string>devenv</string>
+                <key>options</key>
+                <array>
+                  <string>/build</string>
+                  <string>"RelWithDebInfo|x64"</string>
+                </array>
+              </map>
+              <key>configure</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>..\indra</string>
+                  <string>&amp;&amp;</string>
+                  <string>..\indra\tools\vstool\VSTool.exe</string>
+                  <string>--solution</string>
+                  <string>SecondLife.sln</string>
+                  <string>--config</string>
+                  <string>RelWithDebInfo</string>
+                  <string>--startup</string>
+                  <string>secondlife-bin</string>
+                </array>
+                <key>options</key>
+                <array>
+                  <string>-G</string>
+                  <string>"Visual Studio 12 Win64"</string>
+                  <string>-DLL_64BIT_BUILD=TRUE</string>
+                </array>
+              </map>
+              <key>default</key>
+              <string>True</string>
+              <key>name</key>
+              <string>RelWithDebInfo</string>
+            </map>
+            <key>RelWithDebInfoOS</key>
+            <map>
+              <key>build</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>SecondLife.sln</string>
+                </array>
+                <key>command</key>
+                <string>msbuild.exe</string>
+                <key>options</key>
+                <array>
+                  <string>/p:Configuration=RelWithDebInfo</string>
+                  <string>/p:Platform=x64</string>
+                  <string>/t:Build</string>
+                  <string>/p:useenv=true</string>
+                  <string>/verbosity:minimal</string>
+                  <string>/toolsversion:4.0</string>
+                  <string>/p:"VCBuildAdditionalOptions= /incremental"</string>
+                </array>
+              </map>
+              <key>configure</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>..\indra</string>
+                  <string>&amp;&amp;</string>
+                  <string>..\indra\tools\vstool\VSTool.exe</string>
+                  <string>--solution</string>
+                  <string>SecondLife.sln</string>
+                  <string>--config</string>
+                  <string>RelWithDebInfo</string>
+                  <string>--startup</string>
+                  <string>secondlife-bin</string>
+                </array>
+                <key>options</key>
+                <array>
+                  <string>-G</string>
+                  <string>"Visual Studio 12 Win64"</string>
+                  <string>-DUNATTENDED:BOOL=ON</string>
+                  <string>-DINSTALL_PROPRIETARY=FALSE</string>
+                  <string>-DUSE_KDU=FALSE</string>
+                  <string>-DLL_64BIT_BUILD=TRUE</string>
+                </array>
+              </map>
+              <key>name</key>
+              <string>RelWithDebInfoOS</string>
+            </map>
+            <key>Release</key>
+            <map>
+              <key>build</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>SecondLife.sln</string>
+                </array>
+                <key>command</key>
+                <string>devenv</string>
+                <key>options</key>
+                <array>
+                  <string>/build</string>
+                  <string>"Release|x64"</string>
+                </array>
+              </map>
+              <key>configure</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>..\indra</string>
+                  <string>&amp;&amp;</string>
+                  <string>..\indra\tools\vstool\VSTool.exe</string>
+                  <string>--solution</string>
+                  <string>SecondLife.sln</string>
+                  <string>--config</string>
+                  <string>Release</string>
+                  <string>--startup</string>
+                  <string>secondlife-bin</string>
+                </array>
+                <key>options</key>
+                <array>
+                  <string>-G</string>
+                  <string>"Visual Studio 12 Win64"</string>
+                  <string>-DLL_64BIT_BUILD=TRUE</string>
+                </array>
+              </map>
+              <key>name</key>
+              <string>Release</string>
+            </map>
+            <key>ReleaseOS</key>
+            <map>
+              <key>build</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>SecondLife.sln</string>
+                </array>
+                <key>command</key>
+                <string>msbuild.exe</string>
+                <key>options</key>
+                <array>
+                  <string>/p:Configuration=Release</string>
+                  <string>/p:Platform=x64</string>
+                  <string>/t:Build</string>
+                  <string>/p:useenv=true</string>
+                  <string>/verbosity:minimal</string>
+                  <string>/toolsversion:4.0</string>
+                  <string>/p:"VCBuildAdditionalOptions= /incremental"</string>
+                </array>
+              </map>
+              <key>configure</key>
+              <map>
+                <key>arguments</key>
+                <array>
+                  <string>..\indra</string>
+                  <string>&amp;&amp;</string>
+                  <string>..\indra\tools\vstool\VSTool.exe</string>
+                  <string>--solution</string>
+                  <string>SecondLife.sln</string>
+                  <string>--config</string>
+                  <string>Release</string>
+                  <string>--startup</string>
+                  <string>secondlife-bin</string>
+                </array>
+                <key>options</key>
+                <array>
+                  <string>-G</string>
+                  <string>"Visual Studio 12 Win64"</string>
+                  <string>-DUNATTENDED:BOOL=ON</string>
+                  <string>-DINSTALL_PROPRIETARY=FALSE</string>
+                  <string>-DUSE_KDU=FALSE</string>
+                  <string>-DLL_64BIT_BUILD=TRUE</string>
+                </array>
+              </map>
+              <key>name</key>
+              <string>ReleaseOS</string>
+            </map>
+          </map>
+          <key>name</key>
+          <string>windows</string>
+        </map>
       </map>
       <key>version_file</key>
       <string>newview/viewer_version.txt</string>