Prof. Ripley,
 
I will follow your suggestion about file spaces. However, as you said the path declared in the #include row is redundant, so I think the problem did not come through that. 
Meanwhile, after some tries I could compile the file. I just got more attention to case sensitiveness.
Sorry for the mess.
 
Cheers,
 
Diogo Andre' Alagador
 
 
Please do *not* use paths in your C code, especially those with spaces in. 

(The rw-FAQ did advise you not to install into a path with spaces in if 

you wanted to do development work.) The path is not needed for system 

include files (you used <>) and is likely the problem.

And please do not post multiple times.

On Fri, 20 Jul 2007, Diogo Alagador wrote:

> Hy all,

>

> I apologize for my ingenuity in regard to interfaces in R, but I do 

> need it for my work. In that respect I took a simple and small example 

> from the net (the "hello world", one) to interface R with C. I have a 

> Windows XP OS using R.2.5.0 and in that regard I have installed the 

> Perl and RTools files to my PC. I also wrote a proper path file, as 

> suggested.

>

> The C program is:

>

> #include <C:/Archivos de programa/R-2.5.0/include/R.h>

> void hello(int *n){

> int i;

> for(i=0;i<*n;i++){

> Rprintf("Hello, world!\n");

> }

> }

You don't need R.h, but you do need to declare Rprintf, which is in <R_ext/Print.h>. So a more legible version of a correct program would be

% cat holla.c

#include <R_ext/Print.h>

void hello(int *n)

{

int i;

for(i = 0; i < *n; i++)

Rprintf("Hello, world!\n");

}

which you could call by

> dyn.load("holla.dll")

> .C("hello", 10L)

(note the L).

 

> However when trying to compile the a C file in the command window:

>

> R CMD SHLIB holla.c

>

> I get the following message:

>

> make: *** No rule to make target `holla.d', needed by `makeMakedeps'. 

> Stop.

>

> Can somebody give me a hand on this,

> Thanks in advance

>

>

> Diogo André Alagador

>

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>

>

-- 

Brian D. Ripley, ripley@stats.ox.ac.uk

Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ <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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