unix makefile error --no rule to make target

Question

I'm working on a makefile for a simple program and it has two files associated with it: main.cpp and game.adt. From game.adt I'm supposed to split it into 2 parts for the header and source code (guess.h and guess.cpp) using csplit. I've tried compiling the makefile like this:

HEADERS=guess.h

#Targets:

default: guessGame

guessGame: guess.o main.o

                g++ guess.o main.o -o guessGame

guess.o: guess.cpp $(HEADERS) 

                g++ -c guess.cpp -o guess.o

main.o: main.cpp $(HEADERS)

         g++ -c main.cpp -o main.o

clean:

       -rm -f guessGame *.o

However it says there's 'no rule for target guess.cpp needed for guess.o.' Same goes for the header file. I know it's because the files 'guess.cpp' and 'guess.h' don't exist but it's because I'm supposed to split the .adt file to make it into guess.cpp and guess.h. How do I create a rule then for targets guess.cpp and guess.h using the adt file?

Answer 1

This can likely be improved. but it should get you started:

guess.cpp guess.h : game.adt
        csplit -sz $< '/Split Here/'
        mv xx00 guess.h
        mv xx01 guess.cpp

Make sure that the rules are indented with tabs not spaces.