diff -r 419817b84df0 -r 471c600681fd components/desktop/libvpx/Makefile
--- a/components/desktop/libvpx/Makefile	Mon May 16 16:48:41 2016 -0700
+++ b/components/desktop/libvpx/Makefile	Mon May 16 16:56:53 2016 -0700
@@ -39,6 +39,14 @@
 COMPONENT_BUGDB=	library/libvpx
 TPNO=			25516
 
+# Requires newer version of system/linker from ON, available in S12 but not
+# 11.3, so do not publish.
+ifeq ($(BUILD_TYPE), evaluation)
+BUILD_32_and_64=
+INSTALL_32_and_64=
+PUBLISH_STAMP=
+endif
+ 
 # Required for 64-bit builds.
 LDFLAGS += $(CC_BITS)
 LDFLAGS += -Wl,-zgnu-version-script-compat