# Makefile for building mpi_hello_world from mpi_hello_world.c
MPICC ?= mpicc
MPIRUN ?= mpirun
CFLAGS ?= -O2 -Wall
SRC := mpi_hello_world.c serial_pi.c mpi_pi.c
TARGET := $(basename $(SRC))

.PHONY: all clean run

all: $(TARGET)

mpi_%: mpi_%.c
    $(MPICC) $(CFLAGS) -o $@ $<

serial_%: serial_%.c
    $(CC) $(CFLAGS) -o $@ $<

run: $(TARGET)
	$(MPIRUN) -np 4 ./$@

clean:
	rm -f $(TARGET)