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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/65252] Link time optimization breaks use of filenames in linker scripts
Date: Mon, 02 Mar 2015 08:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65252

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |hubicka at gcc dot gnu.org
         Resolution|---                         |WONTFIX

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
LTO doesn't know about linker scripts and their effects (see other related
bugreports).  For your case LTO partitioning might simply tear boot.o and
early.o
apart and put parts in differen LTRANS units.

I don't see any way to fix this but to teach WPA to parse linker scripts and
guide partitioning.

That means basically a WONTFIX with the known workaround to compile boot.o and
early.o without -flto.

Another workaround that might work is to use -flto-partition=1to1 (but the
filenames will still get wrong I think).