Building demo with -64 bits

[ArbolOne <arbolone gmail com>]

 When trying to build the demo:
#include <gtkmm.h>

int main(int argc, char *argv[])
{
    Gtk::Main kit(argc, argv);

    Gtk::Window window;

    Gtk::Main::run(window);

    return 0;
}
In my Win7-64 I get the following error message!
x86_64-w64-mingw32-g++.exe: Id:/gtkmm/include/libpng14: Invalid argument
x86_64-w64-mingw32-g++.exe: cannot specify -o with -c, -S or -E with 
multiple files
Process terminated with status 1 (0 minutes, 0 seconds)
0 errors, 0 warnings

What does this mean?!!