GCC      = gcc

  CFLAGS   = -O3 -fopenmp 
  LDFLAG   = -lm

  OMP_FLAG = -fopenmp
  RM       =  rm -rf

  MPI      = mpicc
  MPI_FLAG = -O1 -g
  EXE = omp_heat2D ser_heat2D mpi_heat2D

  
  all : $(EXE) 
  
  #.PHONY: all  clean purge

  ser_heat2D: ser_heat2D.o

  	$(GCC) $(CFLAGS) -o $@ $^ $(LDFLAG)

  omp_heat2D: omp_heat2D.o

  	$(GCC) $(CFLAGS) -o $@ $^ $(LDFLAG)

  mpi_heat2D:

  	$(MPI) $(MPI_FLAG) mpi_heat2D.c  -o $@ $(LDFLAG) 

  
  %.o :%.c
  	$(GCC) $(CFLAGS) -c -o $@ $<
  
  
  clean:
  	$(RM) *.o *.dat
  
  purge: clean
  	$(RM) $(EXE)