Misplacement of runtime libraries on Linux?

SDK (and what it makes possible — cross-compilation) is definitely something requiring joined efforts from multiple persons as well as communities. I’m working on an initiative of a related workgroup, and would like to hear your opinions first from everyone who, I know, is already distributing toolchains or SDKs (possibly on behalf of his/her community or company).

And also from everyone who’s working on new ports, which is not so familiar for me to list though.