This is the autoconf'd result of applying
openvswitch-configure-ovskmod-var.patch.
It updates configure and .in files directly,
rather than their sources.

diff -aru openvswitch-1.4.0.orig/configure openvswitch-1.4.0/configure
--- openvswitch-1.4.0.orig/configure	2012-01-30 23:09:16.000000000 -0800
+++ openvswitch-1.4.0/configure	2012-02-29 21:23:09.397779430 -0800
@@ -599,6 +607,7 @@
 am__EXEEXT_TRUE
 LTLIBOBJS
 LIBOBJS
+OVSKMOD
 LINUX_ENABLED_FALSE
 LINUX_ENABLED_TRUE
 KBUILD
@@ -757,7 +766,8 @@
 PKG_CONFIG_LIBDIR
 SSL_CFLAGS
 SSL_LIBS
-KARCH'
+KARCH
+OVSKMOD'
 
 
 # Initialize some variables set by options.
@@ -1417,6 +1427,7 @@
   SSL_CFLAGS  C compiler flags for SSL, overriding pkg-config
   SSL_LIBS    linker flags for SSL, overriding pkg-config
   KARCH       Kernel Architecture String
+  OVSKMOD     Open vSwitch kernel module name (default openvswitch_mod)
 
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
@@ -7882,6 +7893,12 @@
 
 
 
+
+if test "X$OVSKMOD" = "X"; then
+    OVSKMOD=openvswitch_mod
+fi
+
+
 ac_config_files="$ac_config_files Makefile datapath/Makefile datapath/linux/Kbuild datapath/linux/Makefile datapath/linux/Makefile.main tests/atlocal"
 
 
diff -aru openvswitch-1.4.0.orig/datapath/Makefile.in openvswitch-1.4.0/datapath/Makefile.in
--- openvswitch-1.4.0.orig/datapath/Makefile.in	2012-01-30 23:09:16.000000000 -0800
+++ openvswitch-1.4.0/datapath/Makefile.in	2012-02-29 21:23:26.744028440 -0800
@@ -128,6 +128,7 @@
 MAKEINFO = @MAKEINFO@
 MKDIR_P = @MKDIR_P@
 OBJEXT = @OBJEXT@
+OVSKMOD = @OVSKMOD@
 PACKAGE = @PACKAGE@
 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
 PACKAGE_NAME = @PACKAGE_NAME@
diff -aru openvswitch-1.4.0.orig/Makefile.in openvswitch-1.4.0/Makefile.in
--- openvswitch-1.4.0.orig/Makefile.in	2012-01-30 23:09:16.000000000 -0800
+++ openvswitch-1.4.0/Makefile.in	2012-02-29 21:23:27.070033119 -0800
@@ -875,6 +875,7 @@
 MAKEINFO = @MAKEINFO@
 MKDIR_P = @MKDIR_P@
 OBJEXT = @OBJEXT@
+OVSKMOD = @OVSKMOD@
 PACKAGE = @PACKAGE@
 PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
 PACKAGE_NAME = @PACKAGE_NAME@
@@ -3634,6 +3635,7 @@
                 -e 's,[@]RUNDIR[@],$(RUNDIR),g' \
                 -e 's,[@]VERSION[@],$(VERSION),g' \
                 -e 's,[@]BUILDNR[@],$(BUILDNR),g' \
+                -e 's,[@]OVSKMOD[@],$(OVSKMOD),g' \
                 -e 's,[@]localstatedir[@],$(localstatedir),g' \
                 -e 's,[@]pkgdatadir[@],$(pkgdatadir),g' \
                 -e 's,[@]sysconfdir[@],$(sysconfdir),g' \
diff -aru openvswitch-1.4.0.orig/utilities/ovs-ctl.in openvswitch-1.4.0/utilities/ovs-ctl.in
--- openvswitch-1.4.0.orig/utilities/ovs-ctl.in	2012-01-30 23:08:18.000000000 -0800
+++ openvswitch-1.4.0/utilities/ovs-ctl.in	2012-02-29 21:22:49.206489585 -0800
@@ -31,14 +31,14 @@
 ## ----- ##
 
 insert_openvswitch_mod_if_required () {
-    # If openvswitch_mod is already loaded then we're done.
-    test -e /sys/module/openvswitch_mod && return 0
+    # If @OVSKMOD@ is already loaded then we're done.
+    test -e /sys/module/@OVSKMOD@ && return 0
 
-    # Load openvswitch_mod.  If that's successful then we're done.
-    action "Inserting openvswitch module" modprobe openvswitch_mod && return 0
+    # Load @OVSKMOD@.  If that's successful then we're done.
+    action "Inserting openvswitch module" modprobe @OVSKMOD@ && return 0
 
     # If the bridge module is loaded, then that might be blocking
-    # openvswitch_mod.  Try to unload it, if there are no bridges.
+    # @OVSKMOD@.  Try to unload it, if there are no bridges.
     test -e /sys/module/bridge || return 1
     bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
     if test "$bridges" != "*"; then
@@ -47,8 +47,8 @@
     fi
     action "removing bridge module" rmmod bridge || return 1
 
-    # Try loading openvswitch_mod again.
-    action "Inserting openvswitch module" modprobe openvswitch_mod
+    # Try loading @OVSKMOD@ again.
+    action "Inserting openvswitch module" modprobe @OVSKMOD@
 }
 
 insert_brcompat_mod_if_required () {
@@ -285,8 +285,8 @@
     if test -e /sys/module/brcompat_mod; then
         action "Removing brcompat module" rmmod brcompat_mod
     fi
-    if test -e /sys/module/openvswitch_mod; then
-        action "Removing openvswitch module" rmmod openvswitch_mod
+    if test -e /sys/module/@OVSKMOD@; then
+        action "Removing openvswitch module" rmmod @OVSKMOD@
     fi
 
     start