# gridcal - compute great-circle distance between two grid locators 
.POSIX:

SRC = gridcal.c 
OBJ = ${SRC:.c=.o}

all: options gridcal 

options:
	@echo "-+- build options -+-"
	@echo "PREFIX  = ${PREFIX}"
	@echo "CFLAGS  = ${CFLAGS}"
	@echo "LDFLAGS = ${LDFLAGS}"
	@echo "CC      = ${CC}"
	@echo "-+-+-+-+-+-+-+-+-+-+-" 

gridcal: ${OBJ}
	$(CC) $(LDFLAGS) -o $@ $(OBJ) -lm

debug: clean
	${MAKE} CFLAGS="${DEBUG}" all

clean:
	rm -f gridcal ${OBJ}