[Bug ld/12762] lto produces multiple definition errors for all symbols (including CRT) in C++

[vanboxem.ruben at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12762

vanboxem.ruben at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ktietz70 at googlemail dot
                   |                            |com

--- Comment #6 from vanboxem.ruben at gmail dot com 2011-05-17 13:27:46 UTC ---
When compiling libstdc++ with -flto in CFLAGS, libstdc++'s config.log shows a
failed test with these errors (along with the previous multiple definition
errors):

`__multf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of multf3.o (symbol from plugin)
`__multf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of multf3.o (symbol from plugin)
`__multf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of multf3.o (symbol from plugin)
`__multf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of multf3.o (symbol from plugin)
`__subtf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of subtf3.o (symbol from plugin)
`__addtf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of addtf3.o (symbol from plugin)
`__subtf3' referenced in section `.text' of /tmp/ccbxHWuQ.ltrans0.ltrans.o:
defined in discarded section `.text' of subtf3.o (symbol from plugin)
...

In total it seems ld is reading all symbols multiple times in the same object
file, and

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.