title: Inline functions and external linkage
body: <p>In this answer <a href="https://stackoverflow.com/a/4193698/738811">https://stackoverflow.com/a/4193698/738811</a> it's written that "Inline functions by default have external linkage". However it's not possible by default to link against something what is inline. So what's the sense to say that inline functions have external linkage?</p>