Installing gmpy on OSX - mpc.h not found

For OSX with homebrew users - I tried to do the usual dance with

brew install mpc
brew install mpfr

and then

python setup.py --prefix=/usr/local/Cellar

but got the error, that 'mpc.h' could not be found. True enough, there is no mpc.h file to be found. The solution is, to use

brew install libmpc
brew install mpfr

instead. After that gmpy2 was compiling and installing with no further problems.

The short and sweet 2015 answer:

brew install mpfr
brew install libmpc
pip install gmpy2