++ g++ -o event_emitter_program -I /root/.opam/4.10.0/lib/ocaml s.o interface.o main.cc -L/root/.opam/4.10.0/lib/ocaml -lunix -lasmrun -pthread /root/.opam/4.10.0/lib/lwt/unix/liblwt_unix_stubs.a /root/.opam/4.10.0/lib/stublibs/dlllwt_unix_stubs.so -ldl
s.o: In function `camlLwt_main__finished_167':
/root/.opam/4.10.0/.opam-switch/build/lwt.5.3.0/_build/default/src/unix/lwt_main.ml:62: undefined reference to `caml_mutex_lock'
/root/.opam/4.10.0/.opam-switch/build/lwt.5.3.0/_build/default/src/unix/lwt_main.ml:64: undefined reference to `caml_mutex_unlock'
s.o: In function `camlLwt_main__run_170':
/root/.opam/4.10.0/.opam-switch/build/lwt.5.3.0/_build/default/src/unix/lwt_main.ml:69: undefined reference to `caml_mutex_lock'
/root/.opam/4.10.0/.opam-switch/build/lwt.5.3.0/_build/default/src/unix/lwt_main.ml:107: undefined reference to `caml_mutex_unlock'
s.o: In function `camlLwt_main__entry':
/root/.opam/4.10.0/.opam-switch/build/lwt.5.3.0/_build/default/src/unix/lwt_main.ml:59: undefined reference to `caml_mutex_new'
s.o: In function `camlThread__fun_293':
(.text+0x1f48a): undefined reference to `caml_wait_signal'
s.o: In function `camlThread__fun_295':
(.text+0x1f4ad): undefined reference to `caml_thread_sigmask'
s.o: In function `camlThread__fun_297':
(.text+0x1f4ca): undefined reference to `caml_thread_yield'
s.o: In function `camlThread__fun_299':
(.text+0x1f4ea): undefined reference to `caml_thread_join'
s.o: In function `camlThread__fun_301':
(.text+0x1f50a): undefined reference to `caml_thread_exit'
s.o: In function `camlThread__fun_303':
(.text+0x1f528): undefined reference to `caml_thread_id'
s.o: In function `camlThread__fun_305':
(.text+0x1f548): undefined reference to `caml_thread_self'
s.o: In function `camlThread__create_90':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/thread.ml:36: undefined reference to `caml_thread_new'
s.o: In function `camlThread__fun_308':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/thread.ml:42: undefined reference to `caml_thread_uncaught_exception'
s.o: In function `camlThread__preempt_99':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/thread.ml:51: undefined reference to `caml_thread_yield'
s.o: In function `camlThread__fun_317':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/thread.ml:64: undefined reference to `caml_thread_cleanup'
s.o: In function `camlThread__entry':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/thread.ml:62: undefined reference to `caml_thread_initialize'
s.o: In function `camlMutex__fun_94':
(.text+0x1f98a): undefined reference to `caml_mutex_unlock'
s.o: In function `camlMutex__fun_96':
(.text+0x1f9aa): undefined reference to `caml_mutex_try_lock'
s.o: In function `camlMutex__fun_98':
(.text+0x1f9ca): undefined reference to `caml_mutex_lock'
s.o: In function `camlMutex__fun_100':
(.text+0x1f9ea): undefined reference to `caml_mutex_new'
s.o: In function `camlCondition__fun_96':
(.text+0x1fa4a): undefined reference to `caml_condition_broadcast'
s.o: In function `camlCondition__fun_98':
(.text+0x1fa6a): undefined reference to `caml_condition_signal'
s.o: In function `camlCondition__fun_100':
(.text+0x1fa8d): undefined reference to `caml_condition_wait'
s.o: In function `camlCondition__fun_102':
(.text+0x1faaa): undefined reference to `caml_condition_new'
s.o: In function `camlEvent__basic_sync_247':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:73: undefined reference to `caml_condition_new'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:84: undefined reference to `caml_mutex_lock'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:89: undefined reference to `caml_condition_wait'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:91: undefined reference to `caml_condition_wait'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:93: undefined reference to `caml_mutex_unlock'
s.o: In function `camlEvent__basic_poll_319':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:149: undefined reference to `caml_condition_new'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:160: undefined reference to `caml_mutex_lock'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:164: undefined reference to `caml_mutex_unlock'
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:170: undefined reference to `caml_mutex_unlock'
s.o: In function `camlEvent__poll_358':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:210: undefined reference to `caml_condition_signal'
s.o: In function `camlEvent__poll_371':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:238: undefined reference to `caml_condition_signal'
s.o: In function `camlEvent__entry':
/root/.opam/4.10.0/.opam-switch/build/ocaml-base-compiler.4.10.0/otherlibs/systhreads/event.ml:57: undefined reference to `caml_mutex_new'
s.o: In function `camlThread__1':
(.data+0x18608): undefined reference to `caml_wait_signal'
(.data+0x18610): undefined reference to `caml_thread_sigmask'
(.data+0x18618): undefined reference to `caml_thread_exit'
(.data+0x18620): undefined reference to `caml_thread_join'
(.data+0x18628): undefined reference to `caml_thread_id'
(.data+0x18630): undefined reference to `caml_thread_self'
(.data+0x18638): undefined reference to `caml_thread_yield'
(.data+0x18640): undefined reference to `caml_thread_uncaught_exception'
(.data+0x18648): undefined reference to `caml_thread_new'
(.data+0x18650): undefined reference to `caml_thread_cleanup'
(.data+0x18658): undefined reference to `caml_thread_initialize'
s.o: In function `camlMutex__gc_roots':
(.data+0x189d8): undefined reference to `caml_mutex_unlock'
(.data+0x189e0): undefined reference to `caml_mutex_try_lock'
(.data+0x189e8): undefined reference to `caml_mutex_lock'
(.data+0x189f0): undefined reference to `caml_mutex_new'
s.o: In function `camlCondition__gc_roots':
(.data+0x18af0): undefined reference to `caml_condition_broadcast'
(.data+0x18af8): undefined reference to `caml_condition_signal'
(.data+0x18b00): undefined reference to `caml_condition_wait'
(.data+0x18b08): undefined reference to `caml_condition_new'
collect2: error: ld returned 1 exit status