[Bug binutils/20343] Document how to use LTO

[markus at trippelsdorf dot de]

https://sourceware.org/bugzilla/show_bug.cgi?id=20343

--- Comment #10 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
(In reply to address@hidden from comment #9)
> When the bfd-plugins directory looks like:
> 
> address@hidden:/usr/local/lib/bfd-plugins# ls -l
> total 4
> lrwxrwxrwx 1 root staff 14 Jul 21 15:11 LLVMgold.so -> ../LLVMgold.so
> lrwxrwxrwx 1 root staff 71 Jul 10 17:56 liblto_plugin.so.0.0.0 ->
> /usr/local/libexec/gcc/x86_64-pc-linux-gnu/6.1.1/liblto_plugin.so.0.0.0*
> 
> 
> How does "nm t.o" decide, if it shall open liblto_plugin or LLVMgold to
> proceed the .o file?

It tries them in alphabetic order. The first plugin that claims the object
in question gets used.

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