[Rd] forcing R CMD COMPILE
Pedro Ribeiro de Andrade Neto
pedro at est.ufpr.br
Wed Mar 23 18:00:04 CET 2005
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 verifies if foo.o exists, and if it is up to date (last modified after
> > foo.cpp's last), trying to avoid recompile foo.cpp.
> Not quite: COMPILE is a make facility, and it calls make with its own
> Makefiles. This does not seem appropriate to your usage.
> > But __all__ my files have other dependencies (at least a .h). The
> > Makefile verifies it, and calls COMPILE only when it is sure that foo.o
> > is not up to dated. The problem occours, for example, if I modify only
> > foo.h, and then compile again. R will say that foo.o is up to date, but
> > it is not true.
> > Is there any way to force R CMD COMPILE?? Well, I can remove the .o file
> > before COMPILE, but I think R could do something about it...
> Better not to use R CMD COMPILE. R itself does not (AFAICS): it is there
> for S-PLUS compatibility. It seems only ROracle on CRAN does.
> Note that R CMD INSTALL is usually called on fresh sources (an unpacked
> tarball) so dependencies are not usually an issue.
OK. So I have to compile them with g++ implicitly (instead of using R CMD
COMPILE), and then call R CMD SHLIB.
> Brian D. Ripley, ripley at 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
LEG - Laboratorio de Estatistica e Geoinformacao
Departamento de Estatistica
Universidade Federal do Parana
More information about the R-devel