Checking for a C compiler ...... found
Looking for MPC, GMP and MPFR libraries ...

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Couldn't find libmpc and/or libgmp and/or 
libmpfr - all of which are required for Math::MPC.

To obtain GMP go to:
http://swox.com/gmp/

To obtain MPFR go to:
http://www.mpfr.org/

To obtain MPC go to:
http://www.loria.fr/~zimmerma/software/mpc.html

If you have these 3 libraries installed,
then apparently one (or more) was not
found. Check the README for instructions.
If the instructions are incorrect, please
notify the author:
sisyphus at cpan dot org

You can, of course, modify Makefile.PL so 
that this test is not conducted - then
re-run it.
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