Example program does not compile

[edwardalee]

The examples/C/src/modal_models/FurutaPendulum.lf example in the playground no longer compiles. It gives:

ld: Undefined symbols:
  _lf_sched_done_with_reaction, referenced from:
      __lf_worker_do_work in libcore.a[8](reactor_threaded.c.o)
  _lf_sched_free, referenced from:
      _environment_free_threaded in libcore.a[7](environment.c.o)
  _lf_sched_get_ready_reaction, referenced from:
      __lf_worker_do_work in libcore.a[8](reactor_threaded.c.o)
  _lf_sched_init, referenced from:
      __lf_initialize_trigger_objects in FurutaPendulum.c.o
      _lf_reactor_c_main in libcore.a[8](reactor_threaded.c.o)
  _lf_scheduler_trigger_reaction, referenced from:
      __lf_trigger_reaction in libcore.a[8](reactor_threaded.c.o)
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Also, it uses:

  flags: "-lm",

This is deprecated. What is the right way to do that?

[erlingrj]

The flags should be replaced by cmake-include. The compilation error is due to the build_run_plot.sh script which is outdated. I can give it a try

[erlingrj]

This should fix it: lf-lang/playground-lingua-franca#96