[Bug lto/69953] Using lto causes gtkmm/gparted and gtkmm/inkscape compile to fail

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69953

--- Comment #8 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to john.frankish from comment #7)
> err, OK - excuse my ignorance, but that does that imply?

It it the reason for your link failure.
Now the question is, if the compiler is right to make the symbol local with
LTO?