+# Emit and use original symbols for custom upgrade from 2.12 to 2.13
+AE_IF_FEATURE_ENABLED([custom-upgrade-conflicting-symbols], [
+ AC_DEFINE([LTTNG_UST_CUSTOM_UPGRADE_CONFLICTING_SYMBOLS], [1], [Emit and use original symbols for custom upgrade from 2.12 to 2.13])
+])
+