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

[nandan amar]

Thanks a lot.
There was a mistake while configuration.
Now corrected.

On 21 March 2011 02:46, Dirk Eddelbuettel <edd at debian.org> wrote:
>
> On 21 March 2011 at 00:59, nandan amar wrote:
> | 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
>
> There are a couple of manuals that come with R which explain in great detail
> how to install R (as the error "R was not built as a library" is indicative
> of you not using a built where R is configured to be a shared library) and
> moreover R.h is not found --- but we cannot tell what you did wrong from the
> information you supplied.
>
> Somehow your system is non-standard and you will have to change that.
>
> Hope this helps, Dirk
>
> | 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
> |
>
> --
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
>



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