Programming

My make file is

CFLAGS = -Wall -g
LDFLAGS = -lm
CC = g++

all: server client

rc4.o: rc4.cpp rc4.h
${CC} ${CFLAGS} -c rc4.cpp

server.o: server.cpp rc4.h
${CC} ${CFLAGS} -c .cpp

client.o: client.cpp rc4.h
${CC} ${CFLAGS} -c client.cpp

server: server.o rc4.o
${CC} ${CFLAGS} rc4.o server.o ${LDFLAGS} -o server

client: client.o rc4.o
${CC} ${CFLAGS} rc4.o client.o ${LDFLAGS} -o client

clean:
rm -rf *.o server client
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I made changes to server.cpp and client.cpp but when i make clean and make again i get following error

$ make
g++ -Wall -g -c .cpp
i686-apple-darwin8-g++-4.0.1: .cpp: No such file or directory
i686-apple-darwin8-g++-4.0.1: no input files
make: *** [server.o] Error 1

Please let me know what is wrong and where.

This rule is wrong:

Code:

server.o: server.cpp rc4.h
        ${CC} ${CFLAGS} -c .cpp

because you are telling the compiler to compile a file called .cpp, and as its error message suggests, there is no such file.
It should be something like

Code:

server.o: server.cpp rc4.h
        ${CC} ${CFLAGS} -c server.cpp

or perhaps more generally with a (GNU make) static pattern and automatic variables

Code:

%.o: %.cpp rc4.h
        ${CC} ${CFLAGS} -c $< -o $@

Thanx Spartle .. I got it right
thankyou very much