[Rcpp-devel] Unable to install RcppArmadillo from CRAN or from SVN archive on Ubuntu 10.10

On 29 April 2011 at 22:56, Conrad Sanderson wrote:
| Sorry, I don't know what's going on.  As far as I know, the structure
| "arma_version" (as defined in the file
| "include/armadillo_bits/arma_version.hpp") is following the C++
| standard.  Please double check and let me know if it's not right.
| 
| If the structure is giving trouble and it's not really used in Rcpp,
| perhaps it's best just to remove it ?

Thanks for the feedback.  And yes, by not referencing it from
src/RcppArmadillo.cpp  we could avoid the issue---and Jan and Doug can try
commenting this out in the short function armadillo_version to avoid the
linker issue, at least for a test.

We may well have to consider removing this code bit (which we don't really
need any more and only needed in the past) but it feels wrong to declare
defeat to the compiler this way.

Dirk


| 
| 
| On 29 April 2011 22:35, Dirk Eddelbuettel <edd at debian.org> wrote:
| >
| > (Conrad, This started as this thread
| >    http://thread.gmane.org/gmane.comp.lang.r.rcpp/1877
| >  which picks up the issue first reported by Jan regaring arma_version not
| >  being found by the linker and which you commented on so colourfully a few
| >  days ago.)
| >
| >
| > On 28 April 2011 at 13:38, Jan de Leeuw wrote:
| > | And I have armadillo-1.2.0 compiled from source on the Mac in /usr/local
| > |
| > | But removing the include and lib files does not help
| >
| > So just as a reference point, I did have Ubuntu's libarmadillo(0,-dev-doc)
| > installed but both before and after purgeing them, I can do 'R CMD check
| > RcppArmadillo' just fine against the SVN sources.  Dito for R CMD INSTALL.
| >
| > So I don't what's going on -- there should not be an issue building this.
| > And on my end (and Romain's for that matter) it worked before and after the
| > suggested by Conrad to use arma::version::major etc directly.
| >
| > So I really don't know
| >
| >   a) what is going on with Doug's setup as I use a very similar machine /
| >      setup on my Ubuntu box --- but then Doug unfortunately had build issues
| >      with related code on his box but not on mine, and
| >
| >   b) what is going on Jan's Mac -- other than Conrad's earlier colourful
| >      remarks about maybe something being fishy with the OS X compiler, but
| >      that is just a guess too.
| >
| > Also, a simple check (see below) builds fine here. The RcppArmadillo package
| > really does nothing much different than this check: access the elements of
| > that struct.
| >
| > So I remain rather puzzled.  One local build issue I could live with, but
| > that both Doug and Jan have issues is a little strange.  But as I said:
| > nothing I can replicate at my end. This should just work.
| >
| > Dirk
| >
| >
| > edd at max:~/svn/rcpp/pkg/RcppArmadillo/inst/include$ cat /tmp/quickCheck.cpp
| >
| > #include <armadillo>
| >
| > int main(void) {
| >  std::cout << "Seeing " << arma::arma_version::major
| >            << "." << arma::arma_version::minor
| >            << "." << arma::arma_version::patch << std::endl;
| > }
| > edd at max:~/svn/rcpp/pkg/RcppArmadillo/inst/include$ g++ -I. -o /tmp/quickCheck /tmp/quickCheck.cpp
| > edd at max:~/svn/rcpp/pkg/RcppArmadillo/inst/include$ /tmp/quickCheck
| > Seeing 1.2.0
| > edd at max:~/svn/rcpp/pkg/RcppArmadillo/inst/include$

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