[R] compling C code in R for Windows

[Uwe Ligges]

Masha Kocherginsky wrote:
> 
> I have used Splus 3.4 for UNIX and I have a C file that I compiled using
> "Splus COMPILE" and later called with dyn.load() and .C(). It works in Splus.
> 
> I want to do the same thing in R, as in just use my .s and .c files and
> find the equivalent of "Splus COMPILE". I've ran into lots of problems
> trying to do this in Windows so far, so please help!
> 
> My questions are:
> - Do I need additional software (sometimes using Rcmd complains about not
> understanding what perl is), such as Perl or C complier?

Right, *at least* Perl, gcc and a collection of tools (see below).


> - Which directory do I need to put the files in, so that Rcmd can see
> them? Or do I copy the Rcmd.exe into the directory where my .c files are?
> If so, what other files do I need to copy?

You have to set the path to the perl / gcc binaries to make them known
by your OS.

 
> - Are there any references on how to do it in a simple way, and examples
> (online or printed)?

Yes. The manual "Writing R Extensions", the R for Windows FAQs and for
collecting the tools I'd suggest Brian Ripley's page
"http://www.stats.ox.ac.uk/pub/Rtools/".


> - How do I do it, exactly?

That's described in the docs mentioned above.

Uwe Ligges
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