Re: simple help for makefile copy foo.pl to bin/foo only after foo.pl has been touched

[Billy Patton]

Philip,
 Thanks again for you help.  Make is something that I must stay in to 
keep my brain straight on how to use.
I make additions to my lists often, but changing the function is not 
something I do very often.  I'm about to add SKIIL code to it is what 
started my to making correction to my other scripts.

Here's what I have changed to, I believe as to your suggestion:
SCRIPTS := diffFiles.pl
xxxx : ${SCRIPTS}
% : %.pl
 @$(PRINTF) "Copying %s to ${BIN_DIR}/%s\n" "$<" "$@"
 @$(COPY) $< ${BIN_DIR}/$@
 @$(CHMOD) +x ${BIN_DIR}/$@

This does the copy every time I co->touch->ci
What I experimented with was to delete bin/diffFiles.
This did nothing to make it get created again.  I know there is no 
dependency for ${BIN_DIR}/diffFiles

So I tried this :
% : %.pl ${BIN_DIR}/% $(LIB)
 @$(PRINTF) "Copying %s to ${BIN_DIR}/%s\n" "$<" "$@"
 @$(COPY) $< ${BIN_DIR}/$@
 @$(CHMOD) +x ${BIN_DIR}/$@

and get :
make: Nothing to be done for `xxxx'.



Philip Guenther wrote:
> On 10/20/07, Billy Patton <address@hidden> wrote:
>   
> > Philip Guenther wrote:
> >     
> ...
>   
> > > Having done that, you also need to update the dependency lists of any
> > > other rules that claimed to require files in ${BIN_DIR} with the
> > > suffix .pl.  Your sample makefile doesn't include any of those, so I
> > > can't show how you need to change them.
> > >       
> ...
>   
> >   Thanks for your response,  I made the changes you had but that
> > resulted in an error :
> > make: *** No rule to make target
> > `/home/bpatton/tool_box/bin/diffFiles.pl', needed by `x'.  Stop.
> >     
>
> Yes, that's what I was referring to in the paragraph of mine that I quote above.
>
>
>   
> > Here is the makefile (shortened)
> >
> > SCRIPTS := diffFiles.pl
> > x : $(addprefix ${BIN_DIR}/,$(SCRIPTS))
> >     
>
> This says "in order to build 'x', first build
> ${BIN_DIR}/diffFiles.pl", which is obviously wrong: you don't want
> ${BIN_DIR}/diffFiles.pl.  So, stop lying to make.  There are two
> obvious ways to do that:
>
> 1) drop the suffix when expanding the dependency list:
>         x : $(addprefix ${BIN_DIR}/,$(basename $(SCRIPTS)))
>
> 2) drop the suffix from the SCRIPTS assignment:
>         SCRIPTS := diffFiles
>
>
> Which of this is the Right Choice depends on how you're using
> $(SCRIPTS) elsewhere in the makefile.  Is it the names of the *source*
> files, of the names of the *destination* files?  If the former, use
> option (1).  If the latter, use option (2).  Either way, you need to
> use it consistently.
>
>
>   
> > I have these rules for .csh, .tcsh,.sh,.bash, and .pm
> > .pm differs slightly but the concept is the same.
> >     
>
> Either of the above options can work with multiple possible suffixes.
> Do you want to specify for yourself what the proper source suffix is
> for each script, or do you want make to figure that out for you by
> checking which one is present?
>
>
> Philip Guenther
>   


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