[Rd] Calling Rscript from Makevars

[Sean Robert McGuffee]

> 
>> I still haven't figured out how to do the Makevars thing,
> 
> 
> It's very simple - just remove all targets from your Makefile and you have
> Makevars since R will do the compilation and linking for you and correctly. If
> you feel like it, you can override its behavior by adding one rule (e.g.,
> all:) that lists your desired dependency and you can pass on to the R default
> by depending on $(SHLIB).

I'm not clear on what to put in Makevars.
For example, in my Makefile.in, I have various header/include variables and
various library variables for compiling and linking different libraries that
could be in random locations on different platforms. In the Makefile.in, I
put these variables in the correct locations for compilation and linking. I
assume I can just change AC_CONFIG_FILES([src/Makefile]) to
AC_CONFIG_FILES([src/Makevars]) in autoconf.ac to get Makevars made from a
Makevars.in file. However, what I can't figure out is what my goal is to put
in a Makevars file. I've never seen any explanation of what Makevars files
do to accomplish all of the complexity of a Makefile. Does R use PKG_LIBS in
all compilation and linking steps or something? If so, then I guess I would
just have to set it equal to all of the other variables inside configure. I
haven't explicitly found that written somewhere, but I'm starting to wonder
if that's what it does. Anyway, if you could connect that dot for me, I'd
appreciate it. 

Thanks,
Sean


> 
> Cheers,
> Simon
>