Re: Making a Makefile

["Kevin Mahoney" <kmahoney40 hotmail com>]

Thanks, Horror and Vladimir
The big key is
PKG_CONFIG=`pkg-config --libs --cflags gtk+-2.0`

I know a bit more about makefiles now :)

Kevin




> From: Horror Vacui <horrorvacui gmx net>
> To: Kevin Mahoney <kmahoney40 hotmail com>
> Subject: Re: Making a Makefile
> Date: Thu, 21 Nov 2002 03:32:06 +0100
>
> Kevin Mahoney wrote:
>
> > Hi,
> > I am new to this list and makefiles.  From the online documentation I was 
> > able to compile a simple 1 file program using:
> >
> >
> > $ g++ -Wall -g helloworld.cpp -o helloworld `pkg-config --cflags gtk+-2.0` 
> > `pkg-config --libs gtk+-2.0`
>
> You need to specify a "target", what it depends on and the action to obtain 
> it. For this program the Makefile could look like this:
>
> #Makefile helloworld
>
> CC=gcc
> CFLAGS=-Wall -g
> PKG_CONFIG=`pkg-config --libs --cflags gtk+-2.0`
>
> helloworld: helloworld.cpp helloworld.h
>                    $(CC) $(CFLAGS) $(PKG_CONFIG) helloworld.cpp -o 
> helloworld
>
> #end Makefile
>
> Targets don't have any whitespace before them, actions MUST have whitespace 
> - this is the way to distinguish them. First target specified is the 
> default target, and will be processed when make is called without an 
> argument in the directory containing this Makefile; after the colon (:) 
> come the dependancies, in this case helloworld depends on helloworld.cpp 
> and helloworld.h, and will be recompiled if either or both of them have 
> changed. The line below that is the command that needs to be executed to 
> get the target. You can have more targets, for example:
>
> foobar: foo.o bar.o
>    gcc foo.o bar.o -o foobar
>
> foo.o: foo.c
>    gcc -c foo.c
>
> bar.o: bar.c
>    gcc -c bar.c
>
> here, foobar depends on foo.o (which depends on foo.c) and bar.o (which 
> depends on bar.c), if you change foo.c, foo.o and foobar will be 
> recompiled.
>
> Cheers
> Horror Vacui


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