[Rcpp-devel] using RApi inC/C++

[nandan amar]

I was searching for SVN source link for rinside
I could only get tar.gz from
http://cran.r-project.org/web/packages/RInside/index.html
I placed the code as u did , but i got following error

amar at amar:~/opt/RInside/inst/examples/standard$ make
R was not built as a library
R was not built as a library
g++  -I/usr/local/lib/R/site-library/Rcpp/include
-I"/usr/local/lib/R/site-library/RInside/include" -g -O2 -Wall
-I/usr/local/include   amar.cpp    -L/usr/local/lib/R/lib -lRblas
-L/usr/local/lib/R/lib -lRlapack
-L/usr/local/lib/R/site-library/Rcpp/lib -lRcpp
-Wl,-rpath,/usr/local/lib/R/site-library/Rcpp/lib
-L/usr/local/lib/R/site-library/RInside/lib -lRInside
-Wl,-rpath,/usr/local/lib/R/site-library/RInside/lib -o amar
amar.cpp:1: fatal error: R.h: No such file or directory
compilation terminated.
make: *** [amar] Error 1

"R was not built as a library".....  I compiled and installed R-2.12.2
as given in INSTALL
where am I going wrong.
Pls suggest
regards.


On 18 March 2011 20:09, Dirk Eddelbuettel <edd at debian.org> wrote:
>
> On 18 March 2011 at 19:39, nandan amar wrote:
> | Dear All,
> | I am trying to use Some R api in c code.
> | To start with I copied following code and try to run as
> |
> |
> | a:~/Desktop/rcpp$ g++ file.cpp
> |
> | i got following error
> |
> | r.cpp:1: fatal error: R.h: No such file or directory
> | compilation terminated.
> |
> | How should I compile the code.
>
> Please look at the Makefile in the examples/standard/ directory of RInside.
>
> I just dropped your code as file 'amar.cpp' and said 'make'. Here is what
> happens:
>
> edd at max:~/svn/rinside/pkg/inst/examples/standard$ make
> g++ -I/usr/share/R/include -I/usr/local/lib/R/site-library/Rcpp/include -I"/usr/local/lib/R/site-library/RInside/include" -O3 -pipe -g -Wall    amar.cpp  -L/usr/lib64/R/lib -lR  -lblas -llapack -L/usr/local/lib/R/site-library/Rcpp/lib -lRcpp -Wl,-rpath,/usr/local/lib/R/site-library/Rcpp/lib -L/usr/local/lib/R/site-library/RInside/lib -lRInside -Wl,-rpath,/usr/local/lib/R/site-library/RInside/lib -o amar
>
> after which I can just say
>
> edd at max:~/svn/rinside/pkg/inst/examples/standard$ ./amar
>
> and the plot appears.  You don't need the unlink(), R does that for you
> (which is why we use its tempfile() functions).
>
> Dirk
>
>
> | file.cpp
> | _____________________________________________________________
> | #include <R.h>
> | //#include <Rinternals.h>
> | #include <RInside.h>                    // for the embedded R via RInside
> |  using namespace std;
> | int main(int argc, char *argv[]) {
> |
> |    // create an embedded R instance
> |    RInside R(argc, argv);
> |
> |    // evaluate an R expression with curve()
> |    // because RInside defaults to interactive=false we use a file
> |    std::string cmd = "tmpf <- tempfile('curve'); "
> |                      "png(tmpf); "
> |                      "curve(x^2, -10, 10, 200); "
> |                      "dev.off();"
> |                      "tmpf";
> |    // by running parseEval, we get the last assignment back, here the filename
> |    std::string tmpfile = R.parseEval(cmd);
> |
> |    std::cout << "Could now use plot in " << tmpfile << std::endl;
> |    unlink(tmpfile.c_str());            // cleaning up
> |
> |    // alternatively, by forcing a display we can plot to screen
> |    cmd = "x11(); curve(x^2, -10, 10, 200); Sys.sleep(30);";
> |    // parseEvalQ evluates without assignment
> |    R.parseEvalQ(cmd);
> |
> |    exit(0);
> | }
> |
> | --
> | Amar Kumar Nandan
> | _______________________________________________
> | Rcpp-devel mailing list
> | Rcpp-devel at lists.r-forge.r-project.org
> | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
>
> --
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
>



--
Amar Kumar Nandan
Karnataka, India, 560100
http://aknandan.co.nr