I have the following C++ code where I used Eigen C++ Library.
#include "Dense" #include <iostream> int main() { Eigen::MatrixXf x(10,10); x.setRandom(); std::cout<<"x is ..\n"<<x<<std::endl; return 0; } When I try g++ with "-std=gnu++11" it gives the following error.
In file included from /usr/include/c++/4.8/tuple:39:0, from /usr/include/c++/4.8/functional:55, from ../SP_ToolBox/ExternalLibraries/Eigen/Eigen/Core:153, from ../SP_ToolBox/ExternalLibraries/Eigen/Eigen/Dense:1, from test.cpp:1: ../SP_ToolBox/ExternalLibraries/Eigen/Eigen/array:8:4: error: #error The Eigen/Array header does no longer exist in Eigen3. All that functionality has moved to Eigen/Core. #error The Eigen/Array header does no longer exist in Eigen3. All that functionality has moved to Eigen/Core. ^ In file included from /usr/include/c++/4.8/functional:55:0, from ../SP_ToolBox/ExternalLibraries/Eigen/Eigen/Core:153, from ../SP_ToolBox/ExternalLibraries/Eigen/Eigen/Dense:1, from test.cpp:1: /usr/include/c++/4.8/tuple:885:33: error: ‘array’ was not declared in this scope struct __is_tuple_like_impl<array<_Tp, _Nm>> : true_type ^ /usr/include/c++/4.8/tuple:885:44: error: wrong number of template arguments (2, should be 1) struct __is_tuple_like_impl<array<_Tp, _Nm>> : true_type ^ /usr/include/c++/4.8/tuple:873:12: error: provided for ‘template<class> struct std::__is_tuple_like_impl’ struct __is_tuple_like_impl : false_type ^ /usr/include/c++/4.8/tuple:885:47: error: expected unqualified-id before ‘>’ token struct __is_tuple_like_impl<array<_Tp, _Nm>> : true_type It compiles fine if I remove "-std=gnu++11" option. My gcc version is 4.8.4 and Eigen Library version is 3.2.10.
