compnerd added a comment.

In http://reviews.llvm.org/D11153#210023, @rengolin wrote:

> Would it work to always add "--as-needed -lgcc_s" and let -lunwind override 
> the behaviour? Is that the semantics here?


I don't think that will work.  The ordering of the arguments is important.  The 
--as-needed will apply to gcc_s.so, but because there are symbols being 
referenced, it will be pulled even though -lunwind comes later without 
--as-needed.  You need to either break compilation, assume the unwinder, or 
provide a switch.


http://reviews.llvm.org/D11153




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