Re: [Rd] forcing R CMD COMPILE

From: Pedro Ribeiro de Andrade Neto <pedro_at_est.ufpr.br>
Date: Wed 23 Mar 2005 - 21:21:00 GMT

Let me tell an example.

I found the bayesSurv package in CRAN. It has some .cpp and .h files, and doesn't have a makefile. I did the following steps:

  1. compile the package (R CMD INSTALL)
  2. write something in /src/List.cpp (only add an empty line)
  3. recompile package (INSTALL) it works, OK.
  4. write something in /src/List.h
  5. recompile it does nothing. List.cpp was not changed and so R says List.o is up to date, right?

Is there any way to tell R that List.o depends on List.h???

I think it is not an R problem, because Makefiles can check it. My question is: I know that List.o is not up to dated, because I changed List.h, and my Makefile recognizes it. But if I tell R to compile List.cpp again using COMPILE, it will say that the file is up to date, and won't compile it. So, the only way to check dependencies, as I can see, is using a Makefile, and compiling .cpp files without any R help. Is it true?

Pedro Andrade

--
LEG - Laboratório de Estatística e Geoinformação
          http://www.est.ufpr.br/leg/
          Departamento de Estatística
        Universidade Federal do Paraná

On Wed, 23 Mar 2005, Prof Brian Ripley wrote:


> On Wed, 23 Mar 2005, Pedro Ribeiro de Andrade Neto wrote:
>
> >
> > On Wed, 23 Mar 2005, Prof Brian Ripley wrote:
> >
> >> On Wed, 23 Mar 2005, Pedro Ribeiro de Andrade Neto wrote:
> >>
> >>> I am developing a package with a lot of C++ code, and I have a question
> >>> about R CMD COMPILE. As I can see, when the package's Makefile calls
> >>>
> >>> R CMD COMPILE foo.cpp
> >>
> >> Why does your package have a Makefile? And why is it calling COMPILE and
> >> not SHLIB?
> >>
> >
> > My package has a Makefile because I need to compile 16 .cpp files. After
> > it, I call R CMD SHLIB.
>
> R CMD SHLIB would do that for you. Many packages using multiple .cpp
> files have no Makefile. Please study the many examples on CRAN.
>
> --
> Brian D. Ripley, ripley@stats.ox.ac.uk
> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
> University of Oxford, Tel: +44 1865 272861 (self)
> 1 South Parks Road, +44 1865 272866 (PA)
> Oxford OX1 3TG, UK Fax: +44 1865 272595
>
>
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Received on Thu Mar 24 08:22:36 2005

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