add getgrid.c and amend README.md accordinglyHEADmaster

1 files changed, 9 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index fa58aa4..f9d958d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,11 @@
 # gridcal - compute great-circle distance between two grid locators 
 .POSIX:
 
-SRC = gridcal.c 
+SRC = gridcal.c getgrid.c
 OBJ = ${SRC:.c=.o}
+PROG= gridcal getgrid
 
-all: options gridcal 
+all: options gridcal getgrid
 
 options:
 	@echo "-+- build options -+-"
@@ -15,11 +16,15 @@ options:
 	@echo "-+-+-+-+-+-+-+-+-+-+-" 
 
 gridcal: ${OBJ}
-	$(CC) $(LDFLAGS) -o $@ $(OBJ) -lm
+	$(CC) $(LDFLAGS) -o $@ gridcal.o -lm
+
+getgrid: ${OBJ}
+	$(CC) $(LDFLAGS) -o $@ getgrid.o -lm
+
 
 debug: clean
 	${MAKE} CFLAGS="${DEBUG}" all
 
 clean:
-	rm -f gridcal ${OBJ}
+	rm -f ${PROG} ${OBJ}