CROSS_COMPILE ?= 
CC := $(CROSS_COMPILE)gcc
STRIP := $(CROSS_COMPILE)strip
CFLAGS += -g -Wall
LIBS = -static
OBJ := sha

all: sha.o 
	$(CC) $(CFLAGS) -o $(OBJ) $^ $(LIBS)
.c.o:
	$(CC) $(CFLAGS) -c $<

clean:
	rm -rf *.o
	rm $(OBJ)