tools/perf/scripts/Build - third_party/kernel - Git at Google

 ifeq ($(CONFIG_LIBTRACEEVENT),y)
   perf-util-$(CONFIG_LIBPERL)   += perl/Perf-Trace-Util/
 endif
 perf-util-$(CONFIG_LIBPYTHON) += python/Perf-Trace-Util/
	ifeq ($(CONFIG_LIBTRACEEVENT),y)
	perf-util-$(CONFIG_LIBPERL) += perl/Perf-Trace-Util/
	endif
	perf-util-$(CONFIG_LIBPYTHON) += python/Perf-Trace-Util/