mpfr
- Depends on 
slibtool - Maintainer mode should be explicitly disabled
 - BID is the newer decimal float, and should be the default for 
x86-64; while DPD is older and is the default onppc --enable-ltoonly works for static builds
slibtoolx86-64; while DPD is older and is the default on ppc--enable-lto only works for static builds