[Bug c++/69953] [5/6/7 Regression] 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 #23 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Vincent Lefèvre from comment #22)
> I get the same kind of errors with "make check" for GMP 6.1.1 by using GCC
> 6.2.1 and LTO (-flto=jobserve -fuse-linker-plugin), e.g.
> 
> /tmp/ccZvS3pG.ltrans0.ltrans.o: In function `main':
> <artificial>:(.text.startup+0xc): undefined reference to `tests_start'
> <artificial>:(.text.startup+0x17): undefined reference to `mp_trace_base'
> <artificial>:(.text.startup+0x43): undefined reference to `__gmpn_random'
> [...]
> 
> but this is plain C, not C++. Is this the same bug? (I'm wondering because
> this bug is attributed to the c++ component.)

No, this must be a different issue.