But, hypothetically, can I actually distribute a non-modified binary of libstdc++ along with a binary of my proprietary program? (Given that I make the source code for libstdc++ available to anyone that asks, and that I distribute a copy of its license).
A specific example: Let's say I use MinGW to compile a Windows binary. This requires libstdc++ (and other libraries, such as libgcc) to function. To make it easy for end-users to install this program, I'd like to just distribute the app along with libstdc++, libgcc etc. I'm asking of this is possible (as for it being ethical is another issue; I support free software, that's why I say it's hypothetical). Also, I'm thinking about dynamic linking instead of static.