prepare (1/3): 
finished

make (2/3): 
g++ -c main.cpp
g++ -c simulation.cpp
In file included from simulation.h:7:0,
                 from simulation.cpp:1:
unsorted_heap.h: In instantiation of 'const TYPE& unsorted_heap<TYPE, COMP>::get_min() const [with TYPE = event*; COMP = compare_t]':
simulation.cpp:43:1:   required from here
unsorted_heap.h:79:10: warning: reference to local variable 'min' returned [-Wreturn-local-addr]
     TYPE min = this->data[0];
          ^~~
g++ -c event.cpp
g++ -o main main.o simulation.o event.o
finished

clean (3/3): 
finished

all task finished, build successfully