[Rcpp-devel] Running RcppArmadillo on Mac OS X 10.7

[Chris Jefferson]

I have been successfully using Rcpp for a while, and recently started
trying to use RcppArmadillo. I found it worked fine on linux, but on
Mac OS X 10.7, it fails.

Even the trivial example below fails, with the errors shown at the bottom.

library(inline)
f = cxxfunction(signature(x="numeric"), ";", ,plugin = "RcppArmadillo")

The udnerlying error seems to be that I do not have 'libgfortran'.
This is indeed true, as fortran is not provided in mac os x any more.

I can download and build armadillo examples independantly and they
work fine. They use the command line:

g++ -I /usr/local/include   -O1   -o example1  example1.cpp
-larmadillo -framework Accelerate

I'm not sure how R / Rcpp / RcppArmadillo decide how to build, so I'm
not sure where I should be looking to (I assume) change -lgfortran for
-framework Accelerate ?

Full R log follows:

> f = cxxfunction(signature(x="numeric"), ";", ,plugin = "RcppArmadillo")
ld: library not found for -lgfortran
collect2: ld returned 1 exit status
make: *** [file486cee9a.so] Error 1

ERROR(s) during compilation: source code errors or compiler
configuration errors!

Program source:
  1:
  2: // includes from the plugin
  3: #include <RcppArmadillo.h>
  4: #include <Rcpp.h>
  5:
  6:
  7: #ifndef BEGIN_RCPP
  8: #define BEGIN_RCPP
  9: #endif
 10:
 11: #ifndef END_RCPP
 12: #define END_RCPP
 13: #endif
 14:
 15: using namespace Rcpp;
 16:
 17:
 18: // user includes
 19:
 20:
 21: // declarations
 22: extern "C" {
 23: SEXP file486cee9a( SEXP x) ;
 24: }
 25:
 26: // definition
 27:
 28: SEXP file486cee9a( SEXP x ){
 29: BEGIN_RCPP
 30: ;
 31: END_RCPP
 32: }
 33:
 34:
Error in compileCode(f, code, language = language, verbose = verbose) :
  Compilation ERROR, function(s)/method(s) not created! ld: library
not found for -lgfortran
collect2: ld returned 1 exit status
make: *** [file486cee9a.so] Error 1
In addition: Warning message:
running command '/Library/Frameworks/R.framework/Resources/bin/R CMD
SHLIB file486cee9a.cpp 2> file486cee9a.cpp.err.txt' had status 1