Re: Executing a shell script in a Makefile

[Noel Yap]

This doesn't mean that copyfile.sh is not exiting prior to finishing.

G2345C wrote:
> because the next statement get executed and it failed
> because foo.o is not yet get copy.
>
> Now if I modified the makefile to this:
> all :
>        $(SHELL) ./copyfile.sh
> then run it.
>
> wait for about 1 minute....
> then modify the makefile to this:
> all :
>        cd $(OBJ_DIR) && mv foo.o newfoo
>
> then run again it work great
>
> Thanks for your help
>
>
>
>
> --- Noel Yap <address@hidden> wrote:
>
>
> > Are you sure copyfile.sh doesn't exit until it's
> > done?  How do you know?
> >
> > G2345C wrote:
> >
> >
> > > Sorry for the confusion. My typo problem
> > >
> > > the makefile is like this:
> > > all :
> > >      $(SHELL) ./copyfile.sh
> > >      cd $(OBJ_DIR) && mv foo.o newfoo.o
> > >
> > > foo.o is a very large file that copy to $(OBJ_DIR)
> >
> > by
> >
> > > the 'copyfile.sh' script.
> > > While the copy is in progress the 'mv' is
> >
> > executing
> >
> > > cause it to fail becase foo.c is not yet copy to
> >
> > the
> >
> > > $(OBJ_DIR)
> > >
> > > Thanks
> > >
> > >
> > >
> > >
> > > --- "Paul D. Smith" <address@hidden> wrote:
> > >
> > >
> > >
> > > > %% G2345C <address@hidden> writes:
> > > >
> > > > g> How do I ask the make file to wait for the
> > > > script
> > > > g> finished its execution then move on to the
> >
> > next
> >
> > > > step.
> > > >
> > > > It always does.
> > > >
> > > > g> Look at the 'all' target below, I want to
> >
> > wait
> >
> > > > for the
> > > > g> 'copyfile.sh' script finish before 'cd to
> > > > OBJ_DIR' but
> > > > g> it always 'cd to OBJ_DIR' before the script
> > > > finish
> > > > g> copy file
> > > >
> > > > No it doesn't.
> > > >
> > > > g> all :
> > > > g>      $(SHELL) ./copyfile.sh
> > > > g>      cd $(OBJ_DIR)
> > > >
> > > > g> (the script copy several large file, that is
> > > > how I know it cd to
> > > > g> the OBJ_DIR before the copy finish)
> > > >
> > > > I don't see how the fact that the script copies
> > > > several large files
> > > > tells you anything about when the cd runs.
> > > >
> > > >
> > > > Remember that the working directory is a function
> >
> > of
> >
> > > > your current shell,
> > > > AND that every command make invokes is run in its
> > > > own shell.  So a
> > > > command like:
> > > >
> > > >       cd $(OBJ_DIR)
> > > >
> > > > is a complete no-op, since as soon as this command
> > > > is done the shell
> > > > will exit and there goes your working directory
> > > > context.
> > > >
> > > > --
> -------------------------------------------------------------------------------
>
> > > > Paul D. Smith <address@hidden>          Find some
> > > > GNU make tips at:
> > > > http://www.gnu.org                     
> > > > http://make.paulandlesley.org
> > > > "Please remain calm...I may be mad, but I am a
> > > > professional." --Mad Scientist
> > >
> > >
> > >
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