Re: [eigen] Eigen Needs Forward Declaration Files

[Marc Glisse <marc.glisse@xxxxxxxx>]

On Sat, 9 Jan 2016, Brad Bell wrote:

> The standard library file
>    # include <iosfwd>
> is a forward declarations file for the objects defined in <iostream>.
>
> I have a need of such a file for the object
>    class Eigen::SimplicialLDLT;
> Here is my reason.
>
> Compiling with eigen and g++ requires one to suppress certain warnings as 
> follows:
>     -Wno-shadow -Wno-deprecated-declarations

Why not advertise the directory with Eigen sources using -isystem instead 
of -I? That's how many projects handle warnings in external dependencies.

--
Marc Glisse