From: "Allan McRae" <al...@archlinux.org>
I have noticed that mpc is not automatically detected even when
installed in the standard library path (with gcc-4.5-20090604). This
means that building with mpc always requires using the
--with-mpc-lib=/usr/lib flag.
This is fixed by adjusting configure{.ac} to have:
mpclibs="-lmpc"
See: http://gcc.gnu.org/ml/gcc-patches/2009-06/msg00615.html
