[Rcpp-devel] Conflict of std::asin and std::tr1::asin while using RcppArmadillo

[Robin Girard]

Dear Rcpp experts, 

I'm using RcppArmadillo and I'm facing a conflict on the asin, acos, atan and fabs functions I hardly manage to understand (the conflict appears under linux but not under windows)  

- -------- My header looks like this : 


#define ARMA_DONT_USE_CXX11
#include "R.h" // R functions

#include <RcppArmadillo.h>
#include <assert.h>

#include <netcdf>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <solar_geometry.h>
#include <clsmodel.h>
using namespace Rcpp;
using namespace RcppArmadillo;
//
using namespace netCDF;
using namespace netCDF::exceptions;

---------- the compilation runs like this 
g++ -m64 -I/usr/include/R -DNDEBUG -std=c++0x -I../inst/include/ -I/usr/include /usr/local/include -I"/usr/lib64/R/include" -I/usr/local/include -I"/usr/lib64/R/library/RcppArmadillo/include" -I"/usr/lib64/R/library/Rcpp/include"  `/usr/lib64/R/bin/Rscript -e "Rcpp:::CxxFlags()"`  `pkg-config --cflags netcdf` /usr/local/include -fopenmp -lnetcdf -lnetcdf.7 -lnetcdf_c++4 -lsolar_geometry -lclsmodel -fpic  -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic  -c Module.cc -o Module.o



---------- and the error message has 
In file included from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/tr1/complex:47,
                 from /usr/lib64/R/library/RcppArmadillo/include/armadillo:74,
                 from /usr/lib64/R/library/RcppArmadillo/include/RcppArmadilloForward.h:46,
                 from /usr/lib64/R/library/RcppArmadillo/include/RcppArmadillo.h:30,
                 from ../inst/include/FluctRES.h:18,
                 from Module.cc:9:
/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/tr1_impl/complex:40: error: ‘template<class _Tp> std::complex<_Tp> std::tr1::acos(const std::complex<_Tp>&)’ conflicts with previous using declaration ‘template<class _Tp> std::complex<_Tp> std::acos(const std::complex<_Tp>&)’


--- 
I tried to call std::acos ... instead of acos in my code but the error is still here. Sorry that my example is not really "elementary" and I hope I'm on the right list.. 
I guess I'm including twice something by wrong use of using namespace and I saw that #define ARMA_DONT_USE_CXX11 implies the load of     #include <tr1/complex> (in file armadillo)

Is any help possible from this mailing list ? 
Thanks in advance 
Best regards
Robin 


Dr. Girard Robin
Chargé de Recherche

MINES-ParisTech /PSL Research University/ Département Energétique et Procédés / PERSEE / Groupe ERSEI
Centre Procédés, Energies Renouvelables et Systèmes Energétiques (PERSEE)
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