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

[xunxun1982 at gmail dot com]

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

--- Comment #24 from PcX <xunxun1982 at gmail dot com> 2011-09-17 17:32:33 UTC 
---
(In reply to comment #23)
> Created attachment 5912 [details]
> Qt uic.exe link failure output
> 
> Hmm, the test case passes, but LTO still can't link an executable:
> 
> See log for output. There's still multiple definition errors (the first in
> output.log) and other errors (the last ones in output.log).

If I build mingw64 CRT with "-flto", when I use "-flto -fuse-linker-plugin" to
build some scientific program ( using the math function such as sin ), it will
result in similar errors.

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