CC=gcc
  
  CFLAGS=-O3   -std=c99 -Wall
  LDFLAG= -lm
  
  OMPFLAG=-fopenmp -D_OMP
  
  PGCC=pgcc
  PGCFLAGS=-acc -ta=nvidia -Minfo
  
  
  NAME=jacobi
  
  default: seq omp
  
  seq:
  	$(CC) $(CFLAGS) $(NAME).c -o $(NAME).seq.exe $(LDFLAG)
  
  omp:
  	$(CC) $(CFLAGS) $(OMPFLAG) $(NAME).c -o $(NAME).omp.exe $(LDFLAG)
  
  
  gpu:
  	$(PGCC) $(PGCFLAGS) $(NAME).c  -o $(NAME).pgi.exe
  
  clean: 
  	rm -f  *.exe