diff --git a/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv2100 b/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv2100
new file mode 100644
index 000000000..91202680a
--- /dev/null
+++ b/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv2100
@@ -0,0 +1,12 @@
+# CONFIG_SITE.linux-x86_64.vxWorks6-mv2100
+#
+# $Id$
+# This file is maintained by the build community.
+#
+# Site override definitions for linux-x86_64 host - vxWorks6-mv2100 target builds
+#-------------------------------------------------------
+# WindRiver has changed the directory structure of vxWorks
+# This is for Tornado 3 (i.e. VxWorks 6.0)
+
+VX_DIR = /ade/vxWorks/6.0
+
diff --git a/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv5100 b/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv5100
new file mode 100644
index 000000000..5bcbd0d80
--- /dev/null
+++ b/configure/os/CONFIG_SITE.linux-x86_64.vxWorks6-mv5100
@@ -0,0 +1,12 @@
+# CONFIG_SITE.linux-x86_64.vxWorks6-mv5100
+#
+# $Id$
+# This file is maintained by the build community.
+#
+# Site override definitions for linux-x86_64 host - vxWorks6-mv5100 target builds
+#-------------------------------------------------------
+# WindRiver has changed the directory structure of vxWorks
+# This is for Tornado 3 (i.e. VxWorks 6.0)
+
+VX_DIR = /ade/vxWorks/6.0
+