Very Computer

I have a file test.c that includes foo.h. Implementation for foo.h is in foo.c

Is this the correct makefile

********************

test : test.o
     g++ -o test test.o
test.o : test.c
     g++ -c test.c

**************************

Do I have to also compile foo.c ???

Thanx,
Gaurav

Quote:> Hi,

> I have a file test.c that includes foo.h. Implementation for foo.h is in foo.c

> Is this the correct makefile

> ********************

> test : test.o
>      g++ -o test test.o
> test.o : test.c
>      g++ -c test.c

> **************************

> Do I have to also compile foo.c ???

#**************************
test : test.o foo.o

%.o : %.c

#**************************

will just do it for he first, but make can probably do a lot more
for you.

--

"LISP  is worth learning for  the profound enlightenment  experience
you will have when you finally get it; that experience will make you
a better programmer for the rest of your days."   -- Eric S. Raymond

Quote:

>Is this the correct makefile

>********************

>test : test.o
>     g++ -o test test.o
>test.o : test.c
>     g++ -c test.c

>**************************

>Do I have to also compile foo.c ???

test: test.o foo.o
        g++ -o test test.o foo.o
test.o: test.c foo.h
        g++ -c test.c
foo.o: foo.c foo.h
        g++ -c foo.c

The foo.o dependency on foo.h is needed if there are any structure or class
definitions in foo.h.  If it just contains prototypes for the functions in
foo.c, you don't need that.

--

Genuity, Woburn, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
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  g> I have a file test.c that includes foo.h. Implementation for foo.h
  g> is in foo.c

  g> Is this the correct makefile

  g> ********************

  g> test : test.o
  g>      g++ -o test test.o
  g> test.o : test.c
  g>      g++ -c test.c

Why are you compiling C files with a C++ compiler?  Not a good idea.

You need:

  test.o: test.c foo.h

so make knows that if foo.h is changed, it has to recompile test.o.

  g> Do I have to also compile foo.c ???

Certainly!

  test: test.o foo.o

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HTH & kind regards
frank

--
Frank Schmitt
4SC AG          phone: +49 89 700763-0
                e-mail: frankDOTschmittAT4scDOTcom