Compiling Eigen library with nvcc (CUDA)

Question

I tried to compile following program (main.cu) with the nvcc (CUDA 5.0 RC):

#include 
#include 

int main( int argc, char**         


        

Answer 1

Starting with Eigen 3.3, nvcc (7.5) succeeds in passing Eigen code to cl (MSVC 2013) (almost?) correctly. For example, the following code produces only 11 warnings:

#include 
#include 

int main()
{
    std::cout << "Hello Eigen\t";
    std::cout << EIGEN_WORLD_VERSION << "." << EIGEN_MAJOR_VERSION << "." << EIGEN_MINOR_VERSION << "\n";
    std::cout << "Hello nvcc\t";
    std::cout << __CUDACC_VER_MAJOR__ << "." << __CUDACC_VER_MINOR__ << "." << __CUDACC_VER_BUILD__ << "\n";
    return 0;
}

Output as expected (Eigen 3.3rc1):

Hello Eigen 3.2.94
Hello nvcc 7.5.17

But a long list of warnings (see post history if you actually want to see them).

Update:

Unfortunately, using CUDA 8.0 & VS2015 (with both Eigen 3.2.9 & Eigen 3.3rc1) results in compilation errors again:

"operator=" has already been declared in the current scope eigen\src\Core\Block.h 111
"operator=" has already been declared in the current scope eigen\src\Core\Ref.h 89

So close...

Update 2:

This has been fixed in commit 59db051 and is available by either using the development branch or waiting for v3.3 (or 3.3rc2) to actually come out.