JonY <[email protected]> writes:

  GMP is misusing the --host option for detecting CPU optimization levels

I don't think it is doing that.  It used -O2 for all CPUs, I think.

  (Why not just use --with-arch=XXX?). Can anybody explain why is it doing
  something like that?

I am not sure I follow you.  GMP detects the CPU, by means of
config.guess, and then uses the detected architecture for selecting some
special code, and architecture specific compiler flags.

  I had to do this along with --host=none-none-none ABI=longlong to make
  gmp work without ASM.
  
I think GMP 5 will not require such workarounds (but I am not sure what
"do this" above refers to).

-- 
Torbjörn

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