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MakeFile

 
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# 1  
Old 10-30-2013
Tools MakeFile
Hey everybody,

This may be stup*d question for you, but i am new in unix and i wonder how can i make the rules for translating and linking my .c "primjer1.c", "primjer2.c" and "primjer3.c" in makefile.

Thank you.
# 2  
Old 10-30-2013
Like most other script files, what you do with it really depends on what you want to do.

Code:
# Stuff I need to put in flags for compile step
CFLAGS=...
# Stuff I need to put in flags for linking step
LDFLAGS=...

primjer1.o:primjer1.c
primjer2.o:primjer2.c
primjer3.o primjer3.c

output:primjer1.o primjer2.o primjer3.o
        $(CC) $(LDFLAGS) primjer1.o primjer2.o primjer3.o -o $@

Note that whenever I have posted 8 leading spaces, it should be (and MUST be) a single tab to work in a makefile.
This User Gave Thanks to Corona688 For This Post:
jskako
# 3  
Old 10-30-2013
And now lets say if i change "primjer2.c" source code, i have to change makefile too? If yes how should i do that?
# 4  
Old 10-30-2013
No, make should detect which things have changed by their timestamps and rebuild accordingly (when you run make of course).

It knows that y.o comes from y.c, and that 'output' needs y.o... So if it sees a change in y.c, it will rebuild y.o and output.
Last edited by Corona688; 10-30-2013 at 02:46 PM..
# 5  
Old 11-04-2013
In the end it was something like:

FLAGS = -O2 -Wall
FILES = primjer1.c primjer2.c primjer3.c
all : primjer1.c primjer1.c primjer3.c
gcc $(FLAGS) $(FILES) -o program
main.o : main.c
gcc -c -Wall main.c
clean :
rm -f *.o *~

.c.o:
gcc $(FLAGS) $<

Thank you for help.
# 6  
Old 11-04-2013
You appear to have copied the rules without understanding as half of them are useless here.
# 7  
Old 11-05-2013
Yeh you are right, i copied everything from book, can you tell me meaning of every line in my code .
 
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