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Re: Executing a shell script in a Makefile


From: G2345C
Subject: Re: Executing a shell script in a Makefile
Date: Wed, 29 Sep 2004 11:04:00 -0700 (PDT)

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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