RE: What is wrong with this simple rule in makefile?

[Lin George]

Thanks PATTON,


The problem is that, another guy has defined the
dependency of %.o to related %.cpp and header files by
using gcc -M to generate prerequisites automatically.
I am not sure whether in your approach, there will be
any conflicts since the target %.o is defined twice.


regards,
George

--- "PATTON, BILLY (SBCSI)" <address@hidden> wrote:

> I believe it would be
> %.o : %.cpp
>       g++ $(CFLAGS) $<
> 
> > -----Original Message-----
> > From: address@hidden 
> > [mailto:address@hidden
> On Behalf 
> > Of Lin George
> > Sent: Thursday, April 27, 2006 8:41 AM
> > To: address@hidden
> > Subject: What is wrong with this simple rule in
> makefile?
> > 
> > 
> > Hello everyone,
> > 
> > 
> > I want to use g++ $(CFLAGS) to compile any .cpp
> files
> > into .o files. For example, using g++ $(CFLAGS)
> > foo.cpp to generate foo.o, using g++ $(CFLAGS)
> goo.cpp
> > to generate goo.o. CFLAGS is a variale which I
> defined
> > before. I write a rule in Makefile as,
> > 
> > %.o :
> >         g++ $(CFLAGS) %.cpp
> > 
> > But when executing the Makefile, it reports error
> > message "g++: %.cpp: No such file or directory".
> > 
> > How to fix it?
> > 
> > 
> > thanks in advance,
> > George
> > 
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> 


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