[Bug ld/24873] gcc -flto objects result in --start-group … --end-group failure to include --as-needed libraries

[dilyan.palauzov at aegee dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24873

--- Comment #3 from dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee 
dot org> ---
Yes, LTO is involved, but the compiler does not get an explict -flto, so one of
the linked libraries, compiled in the past and not contained in the tarball of
libinput, uses LTO and the linker uses then LTO plugins.

I confirm, that keeping the second -lm and removing the first -lm does link
properly.

For me is surprizing that the order within --start-group…--end-group does
matter.  I cannot derive this from the documantation.

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