so there is no possibility to do this?
Dave Seaman wrote: > On 1 Jul 2006 09:37:59 -0700, silversurfer wrote: > > Hello world, > > I was just wondering why the clear-line in my Makefile does not work: > > > main:main.o $(ADDOBJS) > > clear > > @g++ -o main $(LDFLAGS) $+ > > > > > As far as I understood it, it should be possible to add multiple > > shell-commands.. Nevertheless, this does compile the files, but the > > 'clear' before does not work.. > > > Anyone knows why? > > > PS I would like to use this because I like having a clean screen with > > the actual errors on it.. for me, it is easier... ;) > > The "clear" command actually does work, but it's not necessarily the > first thing that gets generated when you run "make". It only gets > generated when that particular rule is applied, and that rule is not what > causes the program to be compiled. > > You can type "make -n" to have the generated sequence of commands echoed > to the screen without being executed. > > If you have, say, a main.cc file plus a Makefile containing exactly those > three lines quoted above, you will see the following: > > $ make -n > g++ -c -o main.o main.cc > clear > g++ -o main main.o > > > The reason for this is that you didn't actually specify a compile command > in your Makefile, but only a link command. You said "main" depends on > "main.o", but you didn't give a rule for generating "main.o". The "make" > program supplied the compile command for you from its implicit rulebase, > thus generating "main.o" for you. Once the prerequisite (main.o) was > satisfied, "make" was able to proceed by applying your rule for the > link step. > > > -- > Dave Seaman > U.S. Court of Appeals to review three issues > concerning case of Mumia Abu-Jamal. > <http://www.mumia2000.org/> _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
