diff -u -r ../node-v12.9.0/deps/v8/src/flags/flag-definitions.h ./deps/v8/src/flags/flag-definitions.h
--- ../node-v12.9.0/deps/v8/src/flags/flag-definitions.h	2019-08-20 17:14:50.000000000 +0000
+++ ./deps/v8/src/flags/flag-definitions.h	2019-08-24 22:38:43.754905700 +0000
@@ -1373,7 +1373,7 @@
 DEFINE_BOOL(perf_prof_unwinding_info, false,
             "Enable unwinding info for perf linux profiler (experimental).")
 DEFINE_IMPLICATION(perf_prof, perf_prof_unwinding_info)
-DEFINE_STRING(gc_fake_mmap, "/tmp/__v8_gc__",
+DEFINE_STRING(gc_fake_mmap, "/@TERMUX_PREFIX@/tmp/__v8_gc__",
               "Specify the name of the file for fake gc mmap used in ll_prof")
 DEFINE_BOOL(log_internal_timer_events, false, "Time internal events.")
 DEFINE_IMPLICATION(log_internal_timer_events, prof)