Cygwin中的Makefile行为

Question

when i try to do compile Keys.c program using Makefile in Cygwin on Windows 7 64bit

it should compile it as following

gcc -g -Wall -ansi -c keys.c 

but i get the following

`cc     keys.c   -o keys`  not `gcc -g -Wall -ansi -c keys.c`

the make file is as follow

CC = gcc
CFLAGS = -g -Wall -ansi

keys:   keys.c
    $(CC) $(CFLAGS) -c keys.c 

Answer 1

Remove -c before keys.c whats happening here is when you give

$(CC) $(CFLAGS) -c keys.c

then only the object file keys.o is created. Since the rule for making the final target is not written the makefile will use the implicit rule to create the target.

CC = gcc
CFLAGS = -g -Wall -ansi

keys:   keys.c
    $(CC) $(CFLAGS) keys.c